[From the U.S. Government Printing Office, www.gpo.gov]

























































                                       TD
                                       22 3. 3
                                       G47
                                       1992











                                                                               TASK 1. B. 3
                                                                                NA170ZO338-01





          WIKONSIN
               COASFAL
    MANAGEmENr
             PROGRAM                                     TOXIC ORGANIC CONTAMINANTS
                                                             IN THE SEDIMENT OF THE
                                                          MILWAUKEE HARBOR ESTUARY







                                                                      Grant recipient:

                                                           UNIVERSITY OF WISCONSIN
                                                                    (MILWAUKEE)




                                                                 SEPTEMBER 1992






                                                       This project was funded inpart
                                                       with a grant under the Coastal
                                                       Zone Management Act of 19 72f
                                                       as amended, from the U. S.
                                                       Department of Commerce, Office
                                                       of Ocean and Coastal Resource
                                                       Management, Wisconsin Coastal
                                                       Management Program

       WISCONSIN DEPARTMENT
            OF ADMINISTRATION
                 P.O. BOX 7868
             MADISON,Wl 5370-7
                   608-266-8234





                                                                    THE
                                     v                  I                        WISCONSIN
                                                      MILWAUKEE








                           COLLEGE OF ENGINEERING
                                                                  AND
                                           APPLIED SCIENCE

                                                             *.SS%,,( OF WISCOiVSIV-,,,,,

                                                                        'ATION

                                                                      =SEARCH             Lu



                                                           011-                      -0
                                                               'VO'NEERIN   No
                                                              eNo"VEERIN
                                                                           A










                   Toxic Organic Contaminants in the Sediments of

                              Milwaukee Harbor Estuary



                                   P.O.# ADB00474

                                    Final Report


                                        to


                        Wisconsin Coastal Management Program

                            Department of Administration



                                 September 1, 1992
          ON







                                         by

                                       Fan Ni
                                   Ashok K. Singh
                                Erik R. Christensen*






         Department of Civil Engineering and Mechanics, and
         Center for Great Lakes Studies, UWM



         *Principal Investigator










                                 Acknowledgement


          This Research Document was funded in part by the Wisconsin
          Coastal Management Program pursuant to Grant #NA170ZO338-01
          from the National oceanic and Atmospheric Administration.

          The Wisconsin Coastal Management Program, part of the
          Wisconsin Department of Administration, was established in
          1978 to preserve, protect and and develop the resources of
          the Lake Michigan and Lake Superior coastline for this and
          future generations. The Wisconsin Coastal Management
          Program analyzes state policy on Great Lakes issues,
          coordinates government programs that affect the coast, and
          provides grants to stimulate better state and local coastal
          management.












                                  TABLE OF CONTENTS


                                                                 Page

         I    Measurements of Priority Organics   ...............1

         2    PCBs vs depth for cores VC7, VC9, VC12,

              and VC36  ........................................ 3-6


         3    PAHs vs depth for cores VC7, VC9, VC12,

              and VC36  ........................................ 7-10
         4    Priority Organics concentration's for

              VC7-1 to VC7-15  ................................. 11-25


              VC9-1 to VC9-15  ................................. 26-40


              VC12-1 to VC12-15  ............................... 41-55


              VC36-1 to VC36-15  ............................... 56-70


         5    Cs-137 Measurements  ............................. 71


         6    References  ...................................... 72

         7    Cs-137 data for cores VC2, VC6, VC7,

              and VC34/35  ..................................... 74-77

         8    Cs-137 activity vs depth for cores VC2, VC61

              VC7, VC9, VC34/35, and VC36  ..................... 78-84









                          Measurements of Priority Organics



              The results of chemical analysis on 4 cores , including VC-7,

         VC-9, VC-12 and VC-36, are presented in this report. The target

         compounds of the analysis are PAHs, including 16 PAHs which are

         listed as priority pollutants by EPA, total PCBs and 18 PCB

         congeners, lindane, chlordane, -mirex, methoxychlor and- 2,4-

         dinitrophenol.

              Concentrations of PCBs represented by aroclor 1242, 1254 and

         1260 as well as total PCBs is illustrated by bar chart graphics for

         each core analyzed.       Concentrations of PAHs represented by

         benz(a)anthracene [BaA], benzo(a)pyrene (BaP], chrysene [Chr], and

         other PAHs out of a total of 16 PAHs have also been demonstrat  ed by

         bar chart graphics.

              The information obtained from VC-7 is very interesting. Layer

         5 containing the most sandy material at the depth of 36-45 cm, has

         the lowest level of both PCB and PAH. Layer 9 and layer 15 which

         is the bottom layer of the core, have the highest level of PAH, at

         354 ppm. and 359 ppm respectively. The 7th layer of the core has

         the highest total PCB level of 7.18 ppm, which is also the highest

         level of total PCB among all cores analyzed in this laboratory from

         1991 to 1992.   The Pb-210 measurement indicates that layer 7 is

         probably at the age of late 60's, which is around the peak period

         of PCB consumption. The fact that the deepest layer of core VC-7

         still contains very high level of PAH and medium level of PCB may

         suggest that the deeper core than the current one is necessary to

         be taken for further study.









              overall, the core VC-9 has relatively lower level of either
          PAH and PCB, particularly for the last six layers of the core. The
          7th and 8th layers of the core have the highest level of total PCB,

          at 3,56 ppm and 3.08 ppm respectively, as well as total PAH, at 140
          ppm and 190 ppm respectively.     Pb-210 and Cs-137 measurements
          indicate that two layers are probably at the age of early to late
          60.Is. Relatively slow sedimentation rate has been discovered by
          both Pb-210 and Cs-137 measurements for VC-12. The highest level

          of total PCBs is f ound at the 4th layer, which is at the age of the

          60's. That almost constant total PAH concentration across the core

          may suggest a constant supply of PAH from upstream of the rivers
          and the Inner Harbor to VC-12, which is located in the Outer

          Harbor.

               The top 12 layers (almost 120 cm deep) of, VC-36 has a

          relatively stable and low concentration of total PCBs. The layer

          7, 8 and 9 contain the highest level of total PAH in the core.







                                                                                     13
                                           VC-7


                                    PCB Concentrotion (ppm)

              0             2     3      4     5      6     7      8      9     10
             0                                                                   1
             5                                                              1242
           10
           15                                                                1254
           20                                                                1260
           25 -

           30 -

           35 -

           40

           45

           50

           55

           60

       E   65 -
       u
           70 - T MR

       Q)  75.-

           80 -
           85 -                7///7 MOM 7// M
           90 -

           95 -

          100

          105

          110

          115 -

          120 -

          125 -

          130 -

          135 -

          140 -







                                                                                   4-
                                          VC-9


                                   PCB Concentration (ppm)

              0                         2                        4            5

            0
           5 -RW///Zff/ZM                                                 1242
           10                                                              1254

           15
           20                                                              1260

           25 -


           30 -


           35 -
           40 - V11111111-112 M

           45


           50 -


           55 -


           60 -


           65 -


           70


           75 -


           80


           85


           90


           95


           100


           105


           110








                                                                                     5
                                           VC- 12


                                    PCB Concentration (ppm)

               0               2       3       4       5       6       7       8
             0                                                                  1
             5                                                              1242
                                                                            1254
           10
           15                                                               1260

           20



           25
           30 -VORMOM

           35  -



       41
           40  -711

           45  -



           50  -



           ss  -



           60



           65  -



           70  -



           75  -






                                             VC-36


                                      PCB Concentration (ppm)

               0                                                                   2

              0

              5
            10                                                                 1242
            15                                                                  1254
            20
            25                                                                  1260
            30

            35

            40

            45

            50

            5 5

            60
            65'-
       E    70 -

            7 5

            80

            85

            90

            9,5

           100

           105

           110

           115

           120

           125

           130

           135

           140

           145

           150






                                           VC-7


                                   PAH Concentration (ppm)

              0      40     80     120    160    200    240    280     320    360
            0                                                                   1

                                                                           Other
          10 -
          15                                                               BaA
          20 -                                                             BaP
          25  -
          30 -                                                             Chr

          35  -
          40  -A
          45  -

          50  -

          55  -

          60  -

          65

          70

          75  -

          80  -

          85  -

          90  -
          95  -V1111111111A I @
         100  -

         105  -

         110  -

         115  -

         120

         125

         130  -

         135  -

         140  -






                                              VC-9


                                      PAH Concentration (ppm)

                0 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200
             0 -    I  I  I   I  I  I   I  I  I   I  I   I  I  I   I  I   I  I  I   I

              5 -                                                              Other
            10 -/                                                              BaA
            15 -                                                               BaP
            20  -
            25  -                                                              Chr

            30  -


            35  -


            40  -


            45  -

       F-
            50  -


            55  -


            60  -


            65  -


            70  -


            75


            80


            85  -
            90  -1

            95  -


            100 -


            105 -






                                             VC- 12


                                     PAH Concentration (ppm)

               0    10   20    30    40   50    60   70    80   90 100 110 120
             0                                                                     1
             5                                                                Other
                                                                              BaA
           10 -
           15 -                                                               BaP
           20 -                                                               Chr

           25 -



           30 -


        E  35 -
        u



           40 -



           45 -



           50






           60  -



           65  -



           70  -



           75  -







                                                                                       io
                                            VC-36


                                     PAH Concentration (ppm)

               0    10   20    30   40    50   60    70   80    90   100 110 120
             0

             5
           10                                                                Other
           15                                                                BaA
           20  -
           25 -V///Z/N // NNA                                                BaP
           30 -                                                              Chr
           ,35 -

           40  -

           45  -

           50  -

           55  -

           60 -

           65 -
       E   70 -

           7 5 -

           80 -

           85

           90

           95 -

          100 -

          105

          110 -
          115  - V//z
          120 -

          125

          130 -
          135  -0
          140 -

          145 -

          150 -













                                          VC7-1


                                            PAH

         Naphthalene 0.04 ppm                 Acenaphthylene 0.16 ppm
         Acenaphthene 1.26 ppm                Fluorene 2.47 ppm
         Phenanthrene 17.55 ppm               Anthracene 3.02 ppm
         Fluoranthene 32.59 ppm               Pyrene     21.28 ppm
         B(a)anthracene 3.68 ppm              Chrysene 7.56 ppm
         B(b)fluoranthene 1.84 ppm            B(k)fluoranthene 1.25 ppm
         B(a)pyrene 0.63 ppm                  Indeno(1,2,3-cd)pyrene 11.42 ppm
         Dibenzo(a,h)anthracene 0.52 ppm
         Benzo(g,h,i)perylene 7.72 ppm

                                        PCB (ppm)

                            1242     1254        1260    TOTAL
                            0.77      0.04      0.26      1.07



                                   PCB Congeners (ppb)

         #1     #5     #29     #50    #87    #154     #188    #200    #209
         19.89         2.29           24.53                       -   2.16

         #44     #52     #77    #101    #118     #126  #138    #153     #180
         84.83   102.87 98.74 56.41 18.56 7.10         36.40 29.38      40.78
         Lindane  ND < .05 ppm      CL-HC (by MSD) Chlordane ND < .5 PPM
         Mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol
         ND < 10 ppm






                                                                                   12



                                         VC7 -2


                                            PAH

         Naphthalene 0.33 ppm                 Acenaphthylene 0.36 ppm
         Acenaphthene 1.06 ppm                Fluorene 2.35 ppm
         Phenanthrene 14.13 ppm               Anthracene 3.19 ppm
         Fluoranthene 25.20 ppm               Pyrene     16.57 ppm
         B(a)anthracene 3.65 ppm              Chrysene 6.05 ppm
         B(b)fluoranthene 5.30 ppm            B(k)fluoranthene 3.60 ppm
         B(a)pyrene 3.95 ppm                  Indeno(1,2,3-cd)pyrene 2.84 ppm
         Dibenzo(a,h)anthracene 0.10 ppm
         Benzo(g,h,i)perylene 0.84 ppm

                                       PCB (ppm)

                            1242    1254       1260      TOTAL
                           0.55       0.00      0.29     0.84



                                  PCB Congeners (ppb)

         #1     #5    #29      #50   #87     #154    #188    #200     #209
         36.55        22.49          12.88


         #44     #52    #77     #101   #118    #126   #138    #153     #180
         51.85 57.23 52.36      37.48 12.15 64.06 25.78 12.62          24.58
         Lindane ND < .05 ppm       CL-HC (by MSD) Chlordane ND < .5 PPM
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm






                                                                                   13



                                          VC7-3


                                          PAH

         Naphthalene 0.70 ppm                 Acenaphthylene 0.18 ppm
         Acenaphthene 1.05 ppm                Fluorene 1.89 ppm
         Phenanthrene 16.54 ppm               Anthracene 3.01 ppm
         Fluoranthene 31.09 ppm               Pyrene    20.48 ppm
         B(a)anthracene 3.43 ppm              Chrysene 6.37 ppm
         B(b)fluoranthene 1.44 ppm            B(k)fluoranthene 0.98 ppm
         B(a)pyrene 1.01 ppm                Indeno(1,2,3-cd)pyrene ND <.1 ppm
         Dibenzo(a,h)anthracene ND   < .10 ppm
         Benzo(g,h,i)perylene 0.09   ppm

                                        PCB (ppm)

                          1242      1254       1260     TOTAL
                           0.74       0.04     0.27      1.05



                                  PCB Congeners (ppb)

         #1    #5     #29      #50   #87     #154    #188    #200    #209
         23.68        2.73           24.53                           2.60



         #44    #52     #77     #101    #118   #126   #138    #153    #180
         89.77 97.28 94.07 56.97 21.21 5.41           55.27 31.08      35.82



                                   CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitr.ophenol







                                                                                    14-



                                          VC7-4


                                           PAH

         Naphthalene 0.01 ppm                 Acenaphthylene 0.11 ppm
         Acenaphthene 1.52 ppm                Fluorene 2.96 ppm
         Phenanthrene 22.05 ppm               Anthracene. 4.57 ppm
         Fluoranthene 28.69 ppm               Pyrene     18.50 ppm
         B(a)anthracene 3.70 ppm              Chrysene 6.76 ppm
         B(b)fluoranthene 3.95 ppm            B(k)fluoranthene 2.80 ppm
         B(a)pyrene 3.78 ppm                  Indeno(1,2,3-cd)pyrene 3.87 ppm
         Dibenzo(a,h)anthracene 0.08 ppm
         Benzo(g,h,i)perylene 1.78 ppm

                                        PCB (ppm)

                            1242     1254       1260     TOTAL
                           0.51       0.12      0.10      0.73



                                  PCB Congeners (ppb)

         #1     #5    #29      #50    #87    #154     #188    #200    #-209
         48.07        2.08             22.06                          6.07



         #44     #52     #77    #101    #118    #126   #138    #153    #180
         60.63   76.55   84.91 51.78 18.44 6.80        49.02 24.39     25.90



                                    CL-HC  (by MSD)

         Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitrophenol












                                           VC7-5


                                            PAH

         Naphthalene 0.01 ppm                 Acenaphthylene 0.06 ppm
         Acenaphthene 0.28 ppm                Fluorene 0.50 ppm
         Phenanthrene 2.74 ppm                Anthracene 0.56 ppm
         Fluoranthene 5.02 ppm                Pyrene     3.27 ppm
         B(a)anthracene 0.51 ppm              Chrysene 1.04 ppm
         B(b)fluoranthene 1.69 ppm            B(k)fluoranthene 1.15 ppm
         B(a)pyrene 1.08 ppm                  Indeno(1,2,3-cd)pyrene 1.86 ppm
         Dibenzo(a,h)anthracene 0.22 ppm
         Benzo(g,h,i)perylene 1.70 ppm

                                        PCB (ppm)


                            1242     1254      1260      TOTAL
                           0.17       0.03      0.01      0.21




                                  PCB Congeners (ppb)

         #1     #5    #29     J50     #87    #154     #188   #200     #209
         3.91         0.36            3.97


         #44     #52    #77     #101    #118   #126    #138    #153    #180
         15.42 20.74 17.62 10.53 3.91          21.11 6.91      0.08    5.69



                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND <     .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND   < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                   16



                                          VC7-6


                                            PAH

         Naphthalene 0.45 ppm                 Acenaphthylene 0.63 ppm
         Acenaphthene 4.44 ppm                Fluorene 9.29 ppm
         Phenanthrene 53.06 ppm               Anthracene 9.72 ppm
         Fluoranthene 76.65 ppm               Pyrene     48.63 ppm
         B(a)anthracene 9.71 ppm              Chrysene 19.11 ppm
         B(b)fluoranthene 4.34 ppm            B(k)fluoranthene 2.95 ppm
         B(a)pyrene 2.29 ppm                  Indeno(1,2,3-cd)pyrene 1.36 ppm
         Dibenzo(a,h)anthracene ND   < .1 ppm
         Benzo(g,h,i)perylene 0.58   ppm

                                        PCB (ppm)


                            1242    1254       1260      TOTAL
                           3.67       0.00      0.91     4.58




                                  PCB Congeners (ppb)

         #1    #5     #29      #50   #87     #154     #188   #200     #209
         48.99        6.02           93.13                            1.25


         #44     #52    #77     #101    #118   #126    #138    #153    #180
         247.19  308.09 260.71 137.50 59.87 16.84 127.37 43.08         91.42



                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm












                                          VC7-7


                                            PAH

         Naphthalene 0.45 ppm                 Acenaphthylene 0.21 ppm
         Acenaphthene 1.54 ppm                Fluorene 4.44 ppm
         Phenanthrene 23.99 ppm               Anthracene 3.77 ppm
         Fluoranthene 36.83 ppm               Pyrene     21.59 ppm
         B(a)anthracene 4.70 ppm              Chrysene 11.20 ppm
         B(b)fluoranthene 2.79 ppm            B(k)fluoranthene 1.89 ppm
         B(a)pyrene 1.25 ppm                  Indeno(1,2,3-cd)pyrene 1.18 ppm
         Dibenzo(a,h)anthracene 0.10 ppm
         Benzo(g,h,i)perylene 1.58 ppm

                                        PCB (ppm)

                            1242    1254       1260      TOTAL
                           5.96       0.00      1.22     7.18




                                  PCB Congeners (ppb)

         #1     #5    #29      #50   #87     #154     #188   #200     #209
         23.22        9.66            170.88                          1.56


         #44     #52    #77     #101    #118   #126    #138    #153    #180
         574.41 677.28 554.85 239.03 132.23 26.40 176.37 63.84         144.77



                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitrophenol












                                         VC7-8


                                           PAH

         Naphthalene 0.09 ppm                Acenaphthylene 0.23 ppm
         Acenaphthene 1.03 ppm               Fluorene 2.21 ppm
         Phenanthrene 14.17 ppm              Anthracene 2.26 ppm
         Fluoranthene 23.06 ppm              Pyrene     15.48 ppm
         B(a)anthracene 3.09 ppm             Chrysene 6.36 ppm
         B(b)fluoranthene 12.66 ppm          B(k)fluoranthene 8.60 ppm
         B(a)pyrene 4.05 ppm                 Indeno(1,2,3-cd)pyrene 2.92 ppm
         Dibenzo(a,h)anthracene 0.10 ppm
         Benzo(g,h,i)perylene 1.65 ppm

                                       PCB (ppm)

                          1242      1254      1260      TOTAL
                           3.40      0.31      0.99     4.70



                                   PCB Congeners (ppb)

         #1     #5    #29     #50    #87    #154     #188   #200     #209
                      4.14           230.18                          6.01


         #44     #52    #77     #101   #118   #126    #138   #153     #180
         520.99 655.85 786.96 332.24 199.78 23.88 173.93     67.02    114.88


                                   CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                    Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm












                                          VC7-9


                                            PAH

         Naphthalene 1.10 ppm                 Acenaphthylene 0.76 ppm
         Acenaphthene 3.87 ppm                Fluorene 9.94 ppm
         Phenanthrene 57.06 ppm               Anthracene 9.08 ppm
         Fluoranthene 66.75 ppm               Pyrene     44.83 ppm
         B(a)anthracene 26.41 ppm             Chrysene 46.92 ppm
         B(b)fluoranthene 22.60 ppm           B(k)fluoranthene 15.09 ppm
         B(a)pyrene 3.74 ppm                 Indeno(1,2,3-cd)pyrene 27.27 ppm
         Dibenzo(a,h)anthracene 2.25 ppm
         Benzo(g,h,i)perylene 16.55 ppm

                                        PCB (ppm)

                           1242      1254      1260      TOTAL
                           4.54       0.00      1.05     5.59



                                  PCB Congeners (ppb)

         #1     #5    #29      #50    #87    #154     #188   #200     #209
                      1.71            153.95
         32.64

         #44     #52     #77    #101    #118   #126    #138    #153    #180
         429*17 508*50 690*23 219*25 142*81 115*22 144*11 63,20          122,60
                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                   20



                                         VC7-10


                                           PAH

         Naphthalene 0.84 ppm                 Acenaphthylene 0.52 ppm
         Acenaphthene 2.66 ppm                Fluorene 6.63 ppm
         Phenanthrene 30.82 ppm               Anthracene 6.80 ppm
         Fluoranthene 45.37 ppm               Pyrene    30.61 ppm
         B(a)anthracene 16.09 ppm             Chrysene 31.45 ppm
         B(b)fluoranthene 13.38 ppm           B(k)fluoranthene 9.09 ppm
         B(a)pyrene 10.64 ppm                Indeno(1,2,3-cd)pyrene 22.07 ppm
         Dibenzo(a,h)anthracene 1.87 ppm
         Benzo(.g,h,i)perylene 18.89 ppm

                                       PCB (ppm)

                           1242     1254       1260     TOTAL
                            5.23      0.11     1.02      6.36



                                  PCB Congeners (ppb)

         #1    #5     #29      #50   #87     #154    #188    #200    #209
         87.37        2.42           217.40


         #44     #52    #77     #101   #118    #126   #138     #153    #180-
         569.14 701.58 910.38 314.04 208.36 163.44 184.26 72.86          121.57
                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitrophenol







                                                                                    2L



                                         VC7-11


                                           PAH

         Naphthalene 0.29 ppm                Acenaphthylene 0.25 ppm
         Acenaphthene 0.74 ppm               Fluorene 1.99 ppm
         Phenanthrene 13.03 ppm              Anthracene 2.50 ppm
         Fluoranthene 24.51 ppm              Pyrene     16.90 ppm
         B(a)anthracene 7.75 ppm             Chrysene 16.36 ppm
         B(b)fluoranthene 5.86 ppm           B(k)fluoranthene 4.10 ppm
         B(a)pyrene 5.12 ppm                 Indeno(1,2,3-cd)pyrene 5.57 ppm
         Dibenzo(a,h)anthracene 0.56 ppm
         Benzo(g,h,i)perylene 3.42 ppm

                                        PCB (ppm)

                           1242     1254        1260     TOTAL
                           1.72       0.25      0.49     2.46



                                  PCB Congeners (ppb)

         #1     #5    #29      #50   #87     #154     #188    #200    #209
         27.78        2.85           101.05

         #44     #52    #77     #101    #118    #126   #138   #153     #180
         247.83 326.91 465.14 166.50 101.97 10.53        101.71 52.43     63.37
                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm






                                                                                   22




                                         VC7-12


                                           PAH

         Naphthalene 1.64 ppm                Acenaphthylene 0.82 ppm
         Acenaphthene 2.18 ppm               Fluorene 5.57 ppm
         Phenanthrene 27.42 ppm              Anthracene 6.43 ppm
         Fluoranthene 48.56 ppm              Pyrene     35.82 ppm
         B(a)anthracene 18.95 ppm            Chrysene 36.96 ppm
         B(b)fluoranthene 16.16 ppm          B(k)fluoranthene 10.98 ppm
         B(a)pyrene 10.78 ppm                Indeno(1,2,3-cd)pyrene 26.35 ppm
         Dibenzo(a,h)anthracene 1.36 ppm
         Benzo(g,h,i)perylene 13.72 ppm

                                        PCB (ppm)

                            1242     1254       1260     TOTAL
                            2.19      0.30      0.35      2.84



                                  PCB Congeners (ppb)

         #1     #5    #29      #50    #87    #154     #188    #200    #209
         61.28                        111.72                          30.67

         #44     #52    #77     #101    #118    #126   #138   #153     #180
         286.60 360.85 669.47 192.38 142.86 37.66        142.60 47.65     89.37
                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitrophenol













                                        VC7-13


                                          PAH

         Naphthalene 1.21 ppm               Acenaphthylene 0.97 ppm
         Acenaphthene 1.86 ppm              Fluorene 4.87 ppm
         Phenanthrene 30.13 ppm             Anthracene 8.17 ppm
         Fluoranthene 56.95 ppm             Pyrene     38.37 ppm
         B(a)anthracene 21.05 ppm           Chrysene 40.98 ppm
         B(b)fluoranthene 14.21 ppm         B(k)fluoranthene 7.93 ppm
         B(a)pyrene 9.77 ppm                Indeno(1,2,3-cd)pyrene 14.69 ppm
         Dibenzo(a,h)anthracene 1.21 ppm
         Benzo(g,h,i)perylene 9.02 ppm

                                       PCB (ppm)

                          1242     1254       1260      TOTAL
                          1.82       0.19      0.35     2.36



                                 PCB Congeners (ppb)

         #1    #5    #29      #50   #87     #154    #188     #200    #209
         82.90       1.8,4          86.88                            0.80


         #44    #52     #77    #101    #118   #126   #138    #153     #180
         190.30 247.29 436.11 140.41 89.58      109.52 90.55    25.35    42.45
                                   CL-HC (by MSD)
         Lindane ND < .05 ppm                    Chlordane ND < .5 ppm
         mirex   ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                2,4-dinitrophenol
         ND < 10 ppm






                                                                                    24



                                          VC7-14


                                           PAH

          Naphthalene 3.25 ppm                Acenaphthylene 0.77 ppm
          Acenaphthene 1.39 ppm               Fluorene 5.38 ppm
          Phenanthrene 27.45 ppm              Anthracene 6.55 ppm
          Fluoranthene 53.70 ppm              Pyrene     36.99 ppm
          B(a)anthracene 15.36 ppm            Chrysene 33.29 ppm
          B(b)fluoranthene 10.02 ppm          B(k)fluoranthene 7.81 ppm
          B(a)pyrene 7.92 ppm                 Indeno(1,2,3-cd)pyrene 17.61 ppm
          Dibenzo(a,h)anthracene 1.21 ppm
          Benzo(g,h,i)perylene 10.79 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            3.37       0.18     1.32      4.87



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154    #188     #200    #209
          85.03        6.46           258.08                           3.35



          #44    #52     #77     #101   #118     #126   #138   #153     #180
          476.65 635.26 943.83 399.05 258.86 8.13        296.33 47.69     103.71
                                    CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2
                                      -dinitrophenol
                                   ,4
          ND < 10 ppm







                                                                                   25



                                         VC7-15


                                           PAH

         Naphthalene 6.16 ppm                Acenaphthylene 1.37 ppm
         Acenaphthene 1.82 ppm               Fluorene 5.80 ppm
         Phenanthrene 28.65 ppm              Anthracene 9.21 ppm
         Fluoranthene 55.40 ppm              Pyrene     39.09 ppm
         B(a)anthracene 24.71 ppm            Chrysene 32.74 ppm
         B(b)fluoranthene 33.51 ppm          B(k)fluoranthene 22.70 ppm
         B(a)pyrene 43.02 ppm                Indeno(1,2,3-cd)pyrene 34.90 ppm
         Dibenzo(a,h)anthracene 14.70 ppm
         Benzo(g,h,i)perylene 5.50 ppm

                                        PCB (ppm)

                            1242     1254       1260     TOTAL
                           1.69       0.20      0.69      2.58



                                  PCB Congeners (pp  b)

         #1     #5    #29      #50    #87    #154     #188    #200    #209
         29.40                        126.26


         #44     #52    #77     #101    #118    #126   #138   #153     #180
         175.59 249.40 370.14 203.06 126.77 164.00 178.49 60.10            76.35
         Lindane ND < .05 ppm       CL-HC (by MSD) Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm






                                                                                    26



                                          VC9-1


                                           PAH

         Naphthalene 0.35 ppm                Acenaphthylene 0.26 ppm
         Acenaphthene 0.23 ppm               Fluorene 0.61 ppm
         Phenanthrene 3.68 ppm               Anthracene 1.71 ppm
         Fluoranthene 9.51 ppm               Pyrene    7.92 ppm
         B(a)anthracene 4.67 ppm             Chrysene 7.27 ppm
         B(b)fluoranthene 8.02 ppm           B(k)fluoranthene 5.45 ppm
         B(a)pyrene 6.10 ppm                 Indeno(1,2,3-cd)pyrene 21.14 ppm
         Dibenzo(a,h)anthracene 1.66 ppm
         Benzo(g,h,i)perylene 12.71 ppm

                                        PCB  (ppm)

                           1242      1254       1260      TOTAL
                           1.55       0.00      .0.36     1.91


                                  PCB Congeners (ppb)

         11     #5    #29     #50     #87    #154     #188    #200     #209
         16.89        0.91            20.18                            3.83


         #44     #52    #77     #101     #118  #126    #138    #153     #180
         84.30   102.58 83.98    48.94   20-90   36.57    31.83   13.66    21.14
                                    CL-HC (by MSD)
         Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
         mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                   27



                                          VC9-2


                                           PAH

         Naphthalene 0.22 ppm               Acenaphthylene 0.12 ppm
         Acenaphthene 0.35 ppm              Fluorene 0.73 ppm
         Phenanthrene 4.75 ppm              Anthracene 1.52 ppm
         Fluoranthene 9.57 ppm              Pyrene     8.32 ppm
         B(a)anthracene 3.75 ppm            Chrysene 7.00 ppm
         B(b)fluoranthene 5.16 ppm          B(k)fluoranthene 2.94 ppm
         B(a)pyrene-4.54 ppm                Indeno(1,2,3-cd)pyrene 12.26 ppm
         Dibenzo(a,h)anthracene 1.33 ppm
         Benzo(g,h,i)perylene 6.59 ppm

                                        PCB (ppm)

                            1242     1254      1260       TOTAL
                            1.33      0.10      0.18       1.61



                                  PCB Congeners (ppb)

         #1    #5     #29     #50     #87    #154     #188   #200     #209
         23.46        2.33            33.39

         #44     #52    #77     #101    #118   #126    #138   #153     #180
         127.06 153.68 129.76 74.83      28.49   33.61    45.29  20.69    27.48
                                    CL-HC (by MSD)
         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm












                                          VC9-3


                                           PAH

         Naphthalene 0.12 ppm                Acenaphthylene 0.12 ppm
         Acenaphthene 0.23 ppm               Fluorene 0.45 ppm
         Phenanthrene 1.97 ppm               Anthracene 0.58 ppm
         Fluoranthene 2.94 ppm               Pyrene    2.91 ppm
         B(a)anthracene 1.24 ppm             Chrysene 2.13 ppm
         B(b)fluoranthene 2.21 ppm           B(k)fluoranthene 0.95 ppn
         B(a)pyrene 1.42 ppm                 Indeno(1,2,3-cd)pyrene 3.11 ppm
         Dibenzo(a,h)anthracene 0.42 ppm
         Benzo(g,h,i)perylene 1.95 ppm

                                        PCB (ppm)

                            1242      1254      1260     TOTAL
                             1.12     0.07      0.09      1.28



                                   PCB Congeners (ppb)

         #1     #5    #29     #50      #87   #154     #188    #200     #209
         16.61        2.89            35.58                            0.38

         #44     #52     #77    #101     #118   #126   #138    #153     #180
         105.06 132.32 108.62 64.69      30.26   47.51   31.22   5.34      16.30
                                    CL-HC (by MSD)
qw       Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm


















7F







                                                                                   29



                                          VC9-4


                                           PAH

         Naphthalene 0.22 ppm               Acenaphthylene 0.20 ppm
         Acenaphthene 0.45 ppm              Fluorene 0.77 ppm
         Phenanthrene 3.08 ppm              Anthracene 1.28 ppm
         Fluoranthene 5.97 ppm              Pyrene     5.02 ppm
         B(a)anthracene 2.75 ppm            Chrysene 4.31 ppm
         B(b)fluoranthene 4.33 ppm          B(k)fluoranthene 2.94 ppm
         B(a)pyrene 3.25 ppm                Indeno(1,2,3-cd)pyrene 9.99 ppm
         Dibenzo(a,h)anthracene 0.73 ppm
         Benzo(g,h,i)perylene 6.51 ppm

                                        PCB (ppm)

                           1242     1254       1260     TOTAL
                           0.92       0.00      0.23     1.15



                                  PCB Congeners (ppb)

         #1     #5    #29     #50    #87     #154    #188    #200    #209
         15.39        1.26            19.38                           4.39

         #44     #52    #77     #101    #118   #126   #138    #153     #180
         73.23 92.18 74.28       46.17 19.36 23.48 27.26 13.24            17.16
                                    CL-HC (by MSD)

         Lindane ND < .05 PPM                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                   30



                                          VC9-5


                                           PAH

         Naphthalene 0.24 ppm               Acenaphthylene 0.19 ppm
         Acenaphthene 0.26 ppm              Fluorene 0.78 ppm
         Phenanthrene 3.28 ppm              Anthracene 1.09 ppm
         Fluoranthene 6.52 ppm              Pyrene     5.74 ppm
         B(a)anthracene 2.44 ppm            Chrysene 4.75 ppm
         B(b)fluoranthene 3.16 ppm          B(k)fluoranthene 2.16 ppm
         B(a)pyrene 2.82 ppm                Indeno(1,2,3-cd)pyrene 8.80 ppm
         Dibenzo(a,h)anthracene 0.93 ppm
         Benzo(g,h,i)perylene 3.89 ppm

                                         PCB (ppm)

                            1242     1254      1260       TOTAL
                           0.87       0.00      0.31      1.18



                                  PCB Congeners (ppb)

         #1     #5    #29     #50     #87    #154     #188   #200     #209
                      1.82             23.44                          2.71


         #44     #52    #77     #101     #118  #126    #138   #153     #180
         94*58   122*13 96*68    58*26   23*49   3*84     33*03  21*38     21*53
                                    CL-HC (by MSD)

         Lindane ND < .65 ppm                     Chlordane ND < .5 ppm
         Mirex    ND    .1 ppm                    Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                    31


                                           VC9-6


                                            PAH

          Naphthalene 0.67 ppm               Acenaphthylene 0.34 ppm
          Acenaphthene 0.39 ppm              Fluorene 0.95 ppm
          Phenanthrene 4.38 ppm              Anthracene 1.82 ppm
          Fluoranthene 8.57 ppm              Pyrene     6.42 ppm
          B(a)anthracene 4.20 ppm            Chrysene 7.43 ppm
          B(b)fluoranthene 6.56 ppm          B(k)fluoranthene 4.60 ppm
          B(a)pyrene 4.89 ppm                Indeno(1,2,3-cd)pyrene 14.17 ppm
          Dibenzo(a,h)anthracene 0.59 ppm
          Benzo(g,h,i)perylene 8.93 ppm

                                         PCB (ppm)

                            1242       1254     1260       TOTAL
                            1.32       0.00      0.38      1.70



                                   PCB Congeners (ppb)

          #1    #5     #29     #50      #87   #154     #188    #200     #209
                       5.52            30.35                            16.43


          #44     #52    #77     #101     #118  #126 '#138      #153     #180
          103.19 129.30 110.68 69.88      28.80   31.73    38.77  12.34     34.62
          Lindane ND < .05 ppm       CL-HC (by MSD) Chlordane ND < .5 ppm
          mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol
          ND < 10 ppm







                                                                                  32



                                         VC9-7


                                           PAH

         Naphthalene 0.46 ppm               Acenaphthylene 0.45 ppm
         Acenaphthene 1.04 ppm              Fluorene 2.14 ppm
         Phenanthrene 9.90 ppm              Anthracene 3.60 ppm
         Fluoranthene 19.17 ppm             Pyrene    14.35 ppm
         B(a)anthracene 7.44 ppm            Chrysene 11.48 ppm
         B(b)fluoranthene 10.99 ppm         B(k)fluoranthene 7.47 ppm
         B(a)pyrene 8.10 ppm                Indeno(1,2,3-cd)pyrene 25.29 ppm
         Dibenzo(a,h)anthracene   2.82 ppm
         Benzo(g,h,i)perylene 15.21 ppm

                                        PCB (ppm)

                           1242     1254       1260     TOTAL
                           3.00       0.00     0.56      3.56



                                  PCB Congeners (ppb)

         #1     #5    #29      #50   #87     #154    #188    #200    #209
         49.11        3.14            86.58                           5.64


         #44     #52    #77     #101    #118   #126   #138    #153     #180
         223.50 283.21 288.99 136.58 74.95      41.31   90.46   36.26     46.13
                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

         ND < 10 ppm             2,4-dinitrophenol













                                         VC9-8


                                          PAH

         Naphthalene 0.38 ppm               Acenaphthylene 0.26 ppm
         Acenaphthene 1.74 ppm              Fluorene 4.85 ppm
         Phenanthrene 22.45 ppm             Anthracene 4.65 ppm
         Fluoranthene 33.92 ppm             Pyrene    24.56 ppm
         B(a)anthracene 11.00 ppm           Chrysene 21.72 ppm
         B(b)fluoranthene 12.29 ppm         B(k)fluoranthene 8.35 ppm
         B(a)pyrene 9.26 ppm                Indeno(1,2,3-cd)pyrene 26.43 ppm
         Dibenzo(a,h)anthracene   0.63 ppm
         Benzo(g,h,i)perylene 10.46 ppm

                                       PCB  (ppm)

                          1242      1254       1260     TOTAL -
                           2.08       0.48     0.52      3.08



                                  PCB Congeners (ppb)

         11    #5     #29     #50    #87    #154     #188   #200     #209
         42.65        4.51            178.60                         5.11


         #44    #52     #77     #101    #118  #126    #138   #153     #180
         230.22 333.57 517.12 241.74 128.16 27.19 195.63 60.86        73.02
         Lindane ND < .05 ppm      CL-HC (by MSD) Chlordane ND < .5 ppm
         Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                  Z4



                                         VC9-9


                                           PAH

         Naphthalene 1.14 ppm               Acenaphthylene 1.01 ppm
         Acenaphthene 0.89 ppm              Fluorene 2.11 ppm
         Phenanthrene 9.30 ppm              Anthracene 3.38 ppm
         Fluoranthene 14.94 ppm             Pyrene    12.86 ppm
         B(a)anthracene 7.22 ppm            Chrysene 13.34 ppm
         B(b)fluoranthene 7.5.6 ppm         B(k)fluoranthene 5.13 ppm
         B(a)pyrene 6.51 ppm                Indeno(1,2,3-cd)pyrene 22.23 ppm
         Dibenzo(a,h)anthracene 2.60 ppm
         Benzo(g,h,i)perylene 14.41 ppm

                                       PCB (ppm)

                          1242      1254       1260     TOTAL
                           0.64       0.00     0.75      1.39



                                  PCB Congeners (ppb)

         #1    #5     #29     #50    #87     #154    #188    #200     #209
         55.89        1.32           99.88                            16.36

         #44    #52     #77     #101    #118   #126   #138    #153     #180
         100.23 163.18 272.87 154.01 65.82 73.82 122.04 25.89          59.96


                                   CL-HC (by MSD)
         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         mirex   ND <..l PPM                      Methoxychlor ND < .1 ppm


                                 2,4-dinitrophenol
         ND < 10 ppm








                                                                                 6S



                                         VC9-10


                                          PAH

         Naphthalene 0.66 ppm              Acenaphthylene 0.34 ppm
         Acenaphthene 0.30 ppm             Fluorene 0.70 ppm
         Phenanthrene 2.71 ppm             Anthracene 1.24 ppm
         Fluoranthene 3.91 ppm             Pyrene     3.64 ppm
         B(a)anthracene 2.32 ppm           Chrysene 3.60 ppm
         B(b)fluoranthene 2.50 ppm         B(k)fluoranthene 1.46 ppm
         B(a)pyrene 2.28 ppm               Indeno(1,2,3-cd)pyrene 6.67 ppm
         Dibenzo(a,h)anthracene 0.63   ppm
         Benzo(g,h,i)perylene 4.58 ppm

                                       PCB (ppm)

                          1242      1254      1260      TOTAL
                           0.17      0.00      0.09     0.26



                                 PCB Congeners (ppb)

         #1    #5     #29    #50     #87    #154     #188   #200     #209
         45.51        2.61           7.69                             84.51

         #44    #52     #77    #101     #118  #126    #138   #153      #180
         11.54  23.11 25.28 20.51 8.26        14.39 14.37 5.03         8.32
         Lindane ND < .05 ppm      CL-HC (by MSD) Chlordane ND < .5 ppm
         Mirex   ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                2,4-dinitrophenol
         ND < 10 ppm













                                          VC9-11


                                           PAH

         Naphthalene ND <.10 ppm           Acenaphthylene ND <.10 ppm
         Acenaphthene ND <.10 ppm          Fluorene ND <.10 ppm
         Phenanthrene 0.14 ppm             Anthr9cene 0.03 ppm
         Fluoranthene 0.29 ppm             Pyrene     0.20 ppm
         B(a)anthracene 0.10 ppm           Chrysene 0.18 ppm
         B(b)fluoranthene 0.11 ppm         B(k)fluoranthene 0.08 ppm
         B(a)pyrene 0.10 ppm               Indeno(1,2,3-cd)pyrene 0.48 ppm
         Dibenzo(a,h)anthracene 0.02 ppm
         Benzo(g,h,i)perylene 0.36 ppm

                                        PCB (ppm)

                           1242      1254        1260      TOTAL
                            0.02       0.01     0.00      0.03



                                   PCB Congeners (ppb)

         #1     #5     #29    #50     #87     #154    #188    #200     #209
                                      1.50                             1.57



         #44     #52     #77    #101    1118     #126  #138    #153     #180
         4.93     3.76   5.27   4.56    1.47     3.92  2 .'2 4 0.00     1.35



                                    CL-HC (by MSD)

         Lindane ND   < .05 ppm                    Chlordane ND   < .5 ppm
         Mirex    ND  < .1 ppm                     Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol
         ND < 10 ppm












                                          VC9-12


                                            PAH

          Naphthalene ND <.10 ppm           Acenaphthylene ND <.10 ppm
          Acenaphthene ND <.10 ppm          Fluorene ND <.10 ppm
          Phenanthrene 0.10 ppm             Anthracene 0.02 ppm
          Fluoranthene 0.16 ppm             Pyrene    0.14 ppm
          B(a)anthracene 0.10 ppm           Chrysene 0.12 ppm
          B(b)fluoranthene 0.15 ppm         B(k)fluoranthene 0.05 ppm
          B(a)pyrene 0.08 ppm               Indeno(1,2,3-cd)pyrene 0.26 ppm
          Dibenzo(a,h)anthracene ND   <.10  ppm
          Benzo(g,h,i)perylene 0.23   ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.02       0.00     0.00      0.02



                                   PCB Congeners (ppb)

          11    #5     #29    #50     #87     #154    #188    #200     #209
                                      0.95                              13.41



          #44    #52     #77     #101   #118     #126  #138    #153      #180
          2.6    3.04    5.54    5.22   0.87     1.86  0.00    0.00      1.18



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol
          ND < 10 ppm













                                          VC9-13


                                            PAH

          Naphthalene ND <.10 ppm           Acenaphthylene ND <.10 ppm
          Acenaphthene ND <.10 ppm          Fluorene ND <.10 nnm
          Phenanthrene 0.04 ppm             Anthracene ND <.10 ppm
          Fluoranthene 0.05 ppm             Pyrene     0.04 ppm
          B(a)anthracene 0.02 ppm           Chrysene 0.08 ppm
          B(b)fluoranthene 0.08 ppm         B(k)fluoranthene 0.06 ppm
          B(a)pyrene 0.07 ppm               Indeno(1,2,3-cd)pyrene 0.36 ppm
          Dibenzo(a,h)anthracene 0.01 ppm
          Benzo(g,h,i)perylene 0.34 ppm

                                        PCB (ppm)

                           1242      1254        1260      TOTAL
                            0.05       0.00      0.03     0.08



                                   PCB Congeners (ppb)

          #1    #5     #29     150    #87     #154    #188    #200     #209
          10.52                       0.35



          #44    #52     #77     #101   #118     #126   #138   #153     #180
          1.23   1.28    1.28    2.53   0.00     7.34   2.17   0.00     2.63



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol
          ND < 10 ppm







                                                                                    139



                                          VC9-14


                                            PAH

          Naphthalene ND <.10 ppm           Acenaphthylene ND <.10 ppm
          Acenaphthene ND <.10 ppm          Fluorene ND <.10 ppm
          Phenanthrene ND <.10 ppm          Anthracene ND <.10 ppm
          Fluoranthene ND <.10 ppm          Pyrene ND <.10 ppm
          B(a)anthracene ND <.10 ppm        Chrysene ND <.10 ppm
          B(b)fluoranthene 0.01 ppm         B(k)fluoranthene 0.01 ppm
          B(a)pyrene ND <.10 ppm            Indeno(1,2,3-cd)pyrene ND <.10 ppm
          Dibenzo(a,h)anthracene ND   <.10  ppm
          Benzo(g,h,i)perylene ND <.10 ppm

                                         PCB (ppm)

                            1242     1254        1260     TOTAL
                            0.01       0.00      0.00      0.01



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154     #188   #200     #209
          8.66         4.29           0.34                             1.22



          #44    #52     #77     #101    #118    #126   #138   #153     #180
          0.82   1.01    1.03    0.67    0.00    4.99   0.00    0.00    0.00



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1   ppm                    Methoxychlor ND < .1 ppm

          ND < 10. ppm             2,4-dinitrophenol





ilk






                                                                                   40



                                          VC9-15


                                           PAH

         Naphthalene ND <.10 ppm           Acenaphthylene ND <.10 ppm
         Acenaphthene ND <.10 ppm          Fluorene ND <.10 ppm
         Phenanthrene ND <.10 ppm          Anthracene ND <.10 ppm
         Fluoranthene 0.06 ppm             Pyrene 0.05 ppm
         B(a)anthracene 0.02 ppm           Chrysene 0.05 ppm
         B(b)fluoranthene 0.06 ppm         B(k)fluoranthene 0.04 ppm
         B(a)pyrene 0.04 ppm               Indeno(1,2,3-cd)pyrene 0.04 ppm
         Dibenzo(a,h)anthracene ND    <.10 ppm
         Benzo(g,h,i)perylene 0.01   ppm

                                        PCB (ppm)

                           1242      1254      1260      TOTAL
                           0.03       0.01      0.00      0.04



                                  PCB Congeners (ppb)

         #1     #5    #29     #50     #87    #154     #188   #200     #209
         11.61        4.07



         #44     #52     #77     #101   #118   #126    #138   #153     #180
         3.10    1.18    1.69    2.51   1.09   0.00    0.00   0.00     0.00



                                     CL-HC (by MSD)

         Lindane ND <   .05 ppm                    Chlordane ND < .5 ppm
         Mirex    ND <  .1 ppm                    Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol
         ND < 10 ppm







                                                                                   41



                                          VC12-1


                                            PAH

          Naphthalene 0.20 ppm                 Acenaphthylene 0.12 ppm
          Acenaphthene 0.35 ppm                Fluorene 0.54 ppm
          Phenanthrene 2.32 ppm                Anthracene 0.95 ppm
          Fluoranthene 4.45 ppm                Pyrene     3.60 ppm
          B(a)anthracene 1.94 ppm              Chrysene 3.11 ppm
          B(b)fluoranthene 2.51 ppm            B(k)fluoranthene 1.70 ppm
          B(a)pyrene 2.73 ppm                  Indeno(1,2,3-cd)pyrene 8.33 ppm
          Dibenzo(a,h)anthracene 0.69 ppm
          Benzo(g,h,i)perylene 5.02 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.53       0.00     0.25      0.78



                                   PCB Congeners (ppb)

          #1    #5     #29    #50     #87    #154     #188    #200     #209
          10.79        1.04           10.62


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          29.52 47.08 49.13 31.79 13.75 0.00           19.42 8.30       28.04


                                    CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol

          ND < 10 ppm







                                                                                  42



                                          VC12-2


                                            PAH

          Naphthalene 0.27 ppm                 Acenaphthylene 0.19 ppm
          Acenaphthene 0.41 ppm                Fluorene 0.69 ppm
          Phenanthrene 4.10 ppm                Anthracene 1.26 ppm
          Fluoranthene 9.31 ppm                Pyrene     6.93 ppm
          B(a)anthracene 3.44 ppm              Chrysene 6.51 ppm
          B(b)fluoranthene 4.49 ppm            B(k)fluoranthene 3.04 ppm
          B(a)pyrene 3.83 ppm                 Indeno(1,2,3-cd)pyrene 15.46 ppm
          Dibenzo(a,h)anthracene 1.02 ppm
          Benzo(g,h,i)perylene 9.17 ppm

                                         PCB (ppm)

                           1242      1254        1260     TOTAL
                            1.12       0.02      0.26     1.40



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154    #188    #200     #209
          36.20        2.77            30.42                           2.79


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          99.26 125.57 117.16 63.46 27.56 6.12         45.03 20-15      25.38


                                     CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 PPM
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm













                                      VC12-3


                                         PAH

         Naphthalene 0.23 ppm              Acenaphthylene 0.22 ppm
         Acenaphthene 0.33 ppm             Fluorene 0.71 ppm
         Phenanthrene 4.13 ppm             Anthracene 1.09 ppm
         Fluoranthene 9.81 ppm             Pyrene   7.49 ppm
         B(a)anthracene 3.78 ppm           Chrysene 7.74 ppm
         B(b)fluoranthene 6.66 ppm         B(k)fluoranthene 2.68 ppm
         B(a)pyrene 4.37 ppm              Indeno(1,2,3-cd)pyrene 16.84 ppm
         Dibenzo(a,h)anthracene 1.64 ppm
         Benzo(g,h,i)perylene 9.98 ppm

                                     PCB (ppm)

                         1242     1254     1260     TOTAL
                         3.93      0.00     0.82     4.75



                                PCB Congeners (ppb)

         #1   #5     #29    #50    #87   #154    #188   #200    #209
         45.59       4.75          117.50                       2.36


         #44   #52    #77     #101  #118   #126   #138   #153    #180
         395.08 494.28 416.34 177.97 96.96 19.18 132.85 37.94    68.98


                                 CL-HC (by MSD)
         Lindane ND < .05 ppm                 Chlordane ND < .5 ppm
         Mirex  ND < .1 ppm                   Methoxychlor ND < .1 ppm


                              2,4-dinitrophenol

         ND < 10 ppm







                                                                            44




                                      VC12-4


                                         PAH

         Naphthalene 0.44 ppm              Acenaphthylene 0.28 ppm
         Acenaphthene 0.29 ppm             Fluorene 0.64 ppm
         Phenanthrene 2.66 ppm             Anthracene 1.17 ppm
         Fluoranthene 6.50 ppm             Pyrene    5.32 ppm
         B(a)anthracene 3.08 ppm           Chrysene 6.55 ppm
         B(b)fluoranthene 4.41 ppm         B(k)fluoranthene 3.00 ppm
         B(a)pyrene 3.41 ppm              Indeno(1,2,3-cd)pyrene 13.40 ppm
         Dibenzo(a,h)anthracene 0.91 ppm
         Benzo(g,h,i)perylene 7.88 ppm

                                     PCB (ppm)

                         1242     1254      1260     TOTAL
                         4.87      0.16     0.71     5.74



                                PCB Congeners (ppb)
         #1    #5    #29    #50    #87    #154    #188   #200.   #209
         14.95       3.89          153.22                        5.76


         #44    #52    #77    #101   #118   #126   #138   #153    #180
         460.55 572.03 539.02 238.13 137.98 23.13 179.90 38.08    79.95


                                 CL-HC (by MSD)
         Lindane ND < .05 ppm                 Chlordane ND < .5 ppm
         Mirex   ND < .1 ppm                  Methoxychlor ND < .1 ppm


                               2,4-dinitrophenol

         ND < 10 ppm







                                                                                  45



                                          VC12-5


                                            PAH

          Naphthalene 0.53 ppm                 Acenaphthylene 0.38 ppm
          Acenaphthene 0.28 ppm                Fluorene 0.76 ppm
          Phenanthrene 3.54 ppm                Anthracene 1.17 ppm
          Fluoranthene 7.82 ppm                Pyrene     6.37 ppm
          B(a)anthracene 3.53 ppm              Chrysene 7.45 ppm
          B(b)fluoranthene 6.62 ppm            B(k)fluoranthene 2.71 ppm
          B(a)pyrene 4.05 ppm                 Indeno(1,2,3-cd)pyrene 15.69 ppm
          Dibenzo(a,h)anthracene 1.70 ppm
          Benzo(g,h,i)perylene 9.46 ppm

                                         PCB (ppm)

                            1242     1254       1260      TOTAL
                            1.67       0.01      0.64     2.32



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154    #188    #200     #209
          49.36        1.29            72.74                           3.99



          #44    #52     #77     #101   #118    #126    #138   #153     #180
          157.13 227.45 157.82 145.14 70.67 12.45 114.95 44.93          65.24.


                                    CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol

          ND < 10 ppm







                                                                                    46



                                          VC12-6


                                            PAH

          Naphthalene 0.65 ppm                 Acdnaphthylene 0.33 ppm
          Acenaphthene 0.22 ppm                Fluorene 0.88 ppm
          Phenanthrene 4.39 ppm                Anthracene 1.33 ppm
          Fluoranthene 9.29 ppm                Pyrene     7.31 ppm
          B(a)anthracene 3.79 ppm              Chrysene 8.27 ppm
          B(b)fluoranthene 6.94 ppm            B(k)fluoranthene 2.64 ppm
          B(a)pyrene 4.29 ppm                 Indeno(1,2,3-cd)pyrene 15.59 ppm
          Dibenzo(a,h)anthracene 1.64 ppm
          Benzo(g,h,i)perylene 9.72 ppm

                                          PCB (ppm)

                            1242      1254       1260     TOTAL
                            '1.09      0.00      0.45      1.54



                                   PCB Congeners (ppb)

          #1     #5    #29     #50     #87    #154     #188    #200    #209
          35.13        0.81             47.85                           3.37


          #44     #52     #77    #101    #118    #126   #138    #153     #180
          105.96 159.12 174.22 94.15 47.56 7.30         73.61 27.41      42.30



                                     CL-HC (by MSD)
          Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
          Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm







                                                                                     47



                                           VC12-7


                                             PAH

          Naphthalene 0.61 ppm                  Acenaphthylene 0.27 ppm
          Acenaphthene 0.28 ppm                 Fluorene 0.77 ppm
          Phenanthrene 3.48 ppm                 Anthracene 1.00 ppm
          Fluoranthene 7.70 ppm                 Pyrene     6.39 ppm
          B(a)anthracene 3.37 ppm               Chrysene 6.88 ppm
          B(b)fluoranthene 5.43 ppm             B(k)fluoranthene 2.69 ppm
          B(a)pyrene 3.58 ppm                  Indeno(1,2,3-cd)pyrene 13.31 ppm
          Dibenzo(a,h)anthracene 1.30 ppm
          Benzo(g,h,i)perylene 9.66 ppm

                                         PCB (ppm)

                            1242      1254        1260     TOTAL
                             0.49       0.00     0.33      0.82



                                    PCB Congeners (ppb)

          #1     #5     #29    #50     #87     #154    #188    #200     #209
          10.07                        23.84



          #44     #52     #77    #101    #118     #126  #138    #153     #180
          53.12 83.45 96.00 56.79 27.23 4.05            45.76 17.44      27.35



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
          mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm






                                                                                    4S



                                          VC12-8


                                             PAH

          Naphthalene 0.67 PPM                 Acenaphthylene 0.39 ppm
          Acenaphthene 0.22 ppm                Fluorene 0.73 ppm
          Phenanthrene 1.49 ppm                Anthracene 1.11 ppm
          FluOranthene 8.19 ppm                Pyrene     6.77 ppm
          B(a)anthracene 3.76 ppm              Chrysene 7.61 ppm
          B(b)fluoranthene 5.96 ppm            B(k)fluoranthene 2.58 ppm
          B(a)pyrene 3.90 ppm                 Indeno(1,2,3-cd)pyrene 13.95 ppm
          Dibenzo(a,h)anthracene 1.14 ppm
          Benzo(g,h,i)perylene 9.15 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.18       0.00      0.22      0.40



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154     #188    #200     #209
          23.01        2.61           12.28                             13.90



          #44    #52     #77     #101   #118     #126   #138    #153     #180
          27.91 50.97 57.68 39.79, 18.97 2.20           39.88 12.27      16.67



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm












                                          VC12-9


                                             PAH

          Naphthalene 0.79 ppm                 Acenaphthylene 0.59 ppm
          Acenaphthene 0.40 ppm                Fluorene 0.89 ppm
          Phenanthrene 3.07 ppm                Anthracene 1.22 ppm
          Fluoranthene 6.97 ppm                Pyrene     6.39 ppm
          B(a)anthracene 4.10 ppm              Chrysene 5.75 ppm
          B(b)fluoranthene 5.57 ppm            B(k)fluoranthene 3.79 ppm
          B(a)pyrene 4.75 ppm                 Indeno(1,2,3-cd)pyrene 11.73 ppm
         .Dibenzo(a,h)anthracene 1.25 ppm
          Benzo(g,h,i)perylene 7.81 ppm

                                         PCB (ppm)

                             1242    1254        1260     TOTAL
                            0.16       0.02      0.04      0.22



                                   PCB Congeners (ppb)

          #1     #5    #29     #50    #87     #154     #188   #200     #209
          13.83                        1.10,                           14.39


          #44     #52    #77     #101    #118    #126   #138    #153    #180
          8.28    16.83 19.52 12.67 7.46         0.00   19.61 4.98      10.62
          Lindane ND < .05 PPM       CL-HC (by MSD) Chlordane ND <    .5 ppm
          Mirex    ND < .1 ppm                     Methoxychlor ND   < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm






                                                                                   so





                                          VC12-10


                                             PAH

          Naphthalene 0.72 ppm                 Acenaphthylene 0.60 ppm
          Acenaphthene 0.29 ppm                Fluorene 1.00 ppm
          Phenanthrene 3.77 ppm                Anthracene 1.60 ppm
          Fluoranthene 8.24 ppm                Pyrene     7.19 ppm
          B(a)anthracene 4.27 ppm              Chrysene 8.16 ppm
          B(b)fluoranthene 6.08 ppm            B(k)fluoranthene 2.67 ppm
          B(a)pyrene 4.20 ppm                  Indeno(1,2,3-cd)pyrene 8.22 ppm
          Dibenzo(a,h)anthracene 1.05 ppm
          Benzo(g,h,i)perylene 4.98 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.07       0.00      0.05     0.12



                                   PCB Congeners (ppb)
          #1    #5     #29     #50    #87     #154    #188    #200     #209
          16.09                       0.39                             8.12

          #44    #52     #77     #101   #118     #126   #138    #153    #180
          0.34   11.31 9.90      12.07 7.24      0.82   10.47 2.43      4.27
          Lindane ND < .05 PPM      CL-HC (by MSD) Chlordane ND <     .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND   < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm








                                                                                    51




                                         VC12-11


                                             PAH

          Naphthalene 1.26 ppm                 Acenaphthylene 1.24 ppm
          Acenaphthene 0.35 ppm                Fluorene 1.04 ppm
          Phenanthrene 4.07 ppm                Anthracene 2.69 ppm
          Fluoranthene 8.13 ppm                Pyrene     7.99 ppm
          B(a)anthracene 5.10 ppm              Chrysene 8.34 ppm
          B(b)fluoranthene 4.57 ppm            B(k)fluoranthene 3.10 ppm
          B(a)pyrene 3.90 ppm                  Indeno(1,2,3-cd)pyrene 8.18 ppm
          Dibenzo(a,h)anthracene 0.96 ppm
          Benzo(g,h,i)perylene 5.45 ppm

                                        PCB (ppm)

                            1242      1254       1260     TOTAL
                            0.08       0.00      0.02     0.10



                                   PCB Congeners (ppb)

          #1    #5     #29     #50     #87    #154    #188    #200     #209
          25.34                       1.78

          #44    #52     #77     #101   #118     #126   #138   #153     #180
          0.45   8.01    7.33    5.00   3.25     0.00   3.10   0.33     1.38



                                    CL-HC (by MSD)

          Lindane ND < .05 PPM                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 'ppm










ML













                                         VC12-12


                                             PAH

          Naphthalene 2.08 ppm                 Acenaphthylene 2.38 ppm
          Acenaphthene 0.73 ppm                Pluorene 1.63 ppm
          Phenanthrene 5.58 ppm                Anthracene 3.25 ppm
          Fluoranthene 11.16 ppm               Pyrene     10.40 ppm
          B(a)anthracene 6.97 ppm              Chrysene 10.54 ppm
          B(b)fluoranthene 7.'61 ppm           B(k)fluoranthene 5.17 ppm
          B(a)pyrene 6.46 ppm                 Indeno(1,2,3-cd)pyrene 16.06 ppm
          Dibenzo(a,h)anthracene 1.88 ppm
          Benzo(g,h,i)perylene 10.08 ppm

                                        PCB (ppm)

                            1242      1254       1260      TOTAL
                            0.03      0.01       0.00       0.04



                                   PCB Congeners (ppb)

          #1    #5     #29     #50     #87    #154     #188   #200     #209
          24.42                       0.71

          #44    #52     #77     #101   #118     #126   #138   #153     #180
          0.00   0.00    10.53 4.49     6.15     0.00   6.85   0.00     0.00
          Lindane ND < .05 PPM      CL-HC (by MSD) Chlordane ND    < .5 ppm
          mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm













                                          VC12-13


                                             PAH

          Naphthalene 1.61 ppm                 Acenaphthylene 1.78 ppm
          Acenaphthene 0.39 ppm                Fluorene 1.44 ppm
          Phenanthrene 5.47 ppm                Anthracene 3.05 ppm
          Fluoranthene 10.44 ppm               Pyrene      10.83 ppm
          B(a)anthracene 6.85 ppm              Chrysene 10.97 ppm
          B(b)fluoranthene 5.80 ppm            B(k)fluoranthene 3.94 ppm
          B(a)pyrene 5.16 ppm                 Indeno(1,2,3-cd)pyrene 10.73 ppm
          Dibenzo(a,h)anthracene 1.35 ppm
          Benzo(g,h,i)perylene 9.28 ppm

                                         PCB (ppm)

                             1242      1254       1260     TOTAL
                             0.04      0.01       0.00       0.05



                                   PCB Congeners (ppb)

          #1     #5    #29     #50      #87   #154,    #188    #200     #209
          51.77                        5.02                             1.27


          #44     #52    #77     #101    #118    #126   #138    #153     #180
          0.00    3.03    17.36 1.74     2.22    0.00   6.54    1.08     0.51



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
          Mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm








                                                                                   54




                                         VC12-14
         Naphthalene 0.63 ppm               PAH Acenaphthylene 1.25 ppm
         Acenaphthene 0.32 ppm                 Fluorene 1.16 ppm
         Phenanthrene 4.59 ppm                 Anthracene 2.51 ppm
         Fluoranthene 8.82 ppm                 Pyrene     9.08 ppm
         B(a)anthracene 5.76 ppm               Chrysene 9.37 ppm
         B(b)fluoranthene 5.10 ppm             B(k)fluoranthene 3.46 ppm
         B(a)pyrene 4.47 ppm                  Ind.,eno(1,2,3-cd)pyrene 16.59 ppm
         Dibenzo(a,h)anthracene 1.73 ppm
         Benzo(g,h,i)perylene 6.50 ppm

                                        PCB (ppm)

                           1242       1254       1260    TOTAL
                            0.02       0.00     0.00      0.02



                                   PCB Congeners (ppb)

         #1     #5     #29    #50      #87    #154    #188    #200     #209
         9.84                                                          1.12

         #44     #52     #77     #101   #118     #126  #138    1153     #180
         0.00    0.00    7.07    0.00   0.00     0.00  3.55    0.00     0.00
         Lindane ND < .05 ppm       CL-HC (by MSD) Chlordane ND < .5 ppm
         Mirex    ND < .1 PPM                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

         ND < 10 ppm











AL












                                          VC12-15


                                             PAH

          Naphthalene 1.56 ppm                 Acenaphthylene .1.05 ppm
          Acenaphthene 0.38 ppm                Fluorene 1.09 ppm
          Phenanthrene 4.14 ppm                Anthracene 2.12 ppm
          Fluoranthene 7.53 ppm                Pyrene     7.65 ppm
          B(a)anthracene 4.81 ppm              Chrysene 8.08 ppm
          B(b)fluoranthene 4.63 ppm            B(k)fluoranthene 3.14 ppm
          B(a)pyrene 4.07 ppm                 Indeno(1,2,3-cd)pyrene 15.41 ppm
          Dibenzo(a,h)anthracene 1.62 ppm
          Benzo(g,h,i)perylene 6.30 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.02       0.00      0.00     0.02


                                   PCB Congeners (ppb)
          #1    #5     #29     #50    #87     #154    #188    #200     #209
          25.65                                                        0.91

          #44    #52     #77     #101   #118     #126  #138     #153    #180
          0.00   0.00    6.36    0.00   0.00     0.00  3.24     0.00    0.00
          Lindane ND < .05 PPM      CL-HC (by MSD) Chlordane ND <     .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND   < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm








                                                                                     S6



                                          VC36-1


                                             PAH

          Naphthalene 0.75 ppm                 Acenaphthylene 0.20 ppm
          Acenaphthene 0.27 ppm                Fluorene 0.82 ppm
          Phenanthrene 4.16 ppm                Anthracene 1.28 ppm
          Fluoranthene 8.44 ppm                Pyrene     7.93 ppm
          B(a)anthracene 2.84 ppm              Chrysene 3.10 ppm
          B(b)fluoranthene 4.97 ppm            B(k)fluoranthene 3.38 ppm
          B(a)pyrene 4.15 ppm                 Indeno(1,2,3-cd)pyrene 15.39 ppm
          Dibenzo(a,h)anthracene 1.47 ppm
          Benzo(g,h,i)perylene 9.32 ppm

                                         PCB (ppm)

                            1242     1254       1260      TOTAL
                            0.73       0.00      0.37       1.10



                                   PCB Congeners (ppb)

          #1    #5     #29     #50    #87     #154     #188    #200     #209
          25.86        1.14           16.18                             3. 92


          #44   #52    #77     #101   #118    #126     #138    #153     #180
          63.76 71.08  69.17   51.89  16.07   59.08    33.98   19.76    31.70




                                     CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm
          ND < 10 ppm             2,4-dinitrophenol





AL
7"







                                                                                  51



                                         VC36-2


                                           PAH

         Naphthalene 0.55 ppm                 Acenaphthylene 0.12 ppm
         Acenaphthene 0.31 ppm                Fluorene 0.82 ppm
         Phenanthrene 3.47 ppm                Anthracene 0.79 ppm
         Fluoranthene 8.55 ppm                Pyrene     7.55 ppm
         B(a)anthracene 3.02 ppm              Chrysene 6.08 ppm
         B(b)fluoranthene 5.45 ppm            B(k)fluoranthene 3.16 ppm
         B(a)pyrene 3.80 ppm                 Indeno(1,2,3-cd)pyrene 16..26 ppm
         Dibenzo(a,h)anthracene 1.03 ppm
         Benzo(g,h,i)perylene 5.93 ppm

                                       PCB (ppm)

                           1242     1254       1260      TOTAL
                           0.61       0.00      0.31     0.92



                                  PCB Congeners (ppb)

         #1     #5    #29     #50    #87     #154     #188    #200    #209
         65.36        2.15           13.24                            3.99



         #44    #52   #77     #101   #118    #126     #138    #153    #180
         54.67  57.49 50.23   44.53  11.90   1.70     24.88 7.03      24.61




                                    CL-HC (by MSD)

         Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm
         ND < 10 ppm             .2,4-dinitrophenol





AL












                                          VC36-3


                                            PAH

          Naphthalene 0.47 ppm                 Acenaphthylene 0.12 ppm
          Acenaphthene 0.41 ppm                Fluorene 1.41 ppm
          Phenanthrene 4.24 ppm                Anthracene 1.22 ppm
          Fluoranthene 9.90 ppm                Pyrene     8.14 ppm
          B(a)anthracene 3.39 ppm              Chrysene 6.70 ppm
          B(b)fluoranthene 5.47 ppm            B(k)fluoranthene 3.7.1 ppm
          B(a)pyrene 4.87 ppm                 Indeno(1,2,3-cd)pyrene 17.34 ppm
          Dibenzo(a,h)anthracene 1.63 ppm
          Benzo(g,h,i)perylene 10.62 ppm

                                         PCB (ppm)

                            1242     1254       1260      TOTAL
                            0.94       0.00      0.45       1.39



                                   PCB Congeners (ppb)

          #1     #5    #29     #50    #87     #154     #188    #200    #209
          52.64        5.03           17.00                            20.32

          #44   #52    #77     #101   #118    #126     #138    #153    #180
          59.05  76.35 66.71   48.46  12.95   53.43    31.06   18.54   30.01



                                     CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

                                  2,4-dinitrophenol
          ND < 10 ppm













AL













                                         VC36-4


                                           PAH

         Naphthalene 0.51 ppm                 Acenaphthylene 0.14 ppm
         Acenaphthene 0.33 ppm                Fluorene 0.93 ppm
         Phenanthrene 3.53 ppm                Anthracene 0.95 ppm
         Fluoranthene 8.49 ppm                Pyrene     7.35 ppm
         B(a)anthracene 3.08 ppm              Chrysene 6.32 ppm
         B(b)fluoranthene 5.21 ppm            B(k)fluoranthene 3.54 ppm
         B(a)pyrene 3.64 ppm                 Indeno(1,2,3-cd)pyrene 16.05 ppm
         Dibenzo(a,h)anthracene 0.98 ppm
         Benzo(g,h,i)perylene 5.36 ppm

                                         PCB (ppm)

                            1242     1254      1260      TOTAL
                           1.05       0.00      0.30      1.35



                                  PCB Congeners (ppb)

         #1     #5    #29     #50 - #87      #154     #188   #200     #209
         3.98          3.16            21.32                          4.70



         #44     #52     #77    #101    #118   #126    #138    #153    #180 -
         85.56 104.33 97.91 62.03 21.69 11.38 37.57 31.62              35.25


                                    CL-HC (by MSD)

         Lindane ND < .05 PPM                      Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm

                                 2,4-dinitrophenol
         ND < 10 ppm







                                                                                    60




                                          VC36-5


                                            PAH

         Naphthalene 0.60 ppm                  Acenaphthylene 0.15 ppm
         Acenaphthene 0.34 ppm                 Fluorene 1.14 ppm
         Phenanthrene 4.11 ppm                 Anthracene 1.01 ppm
         Fluoranthene 8.93 ppm                 Pyrene     7.47 ppm
         B(a)anthracene 3.04 ppm               Chrysene 6.30 ppm
         B(b)fluoranthene 4.98 ppm             B(k)fluoranthene 3.39 ppm
         B(a)pyrene 4.20 ppm                  Indeno(1,2,3-cd)pyrene 14.82 ppm
         Dibenzo(a,h)anthracene 1.46 ppm
         Benzo(g,h,i)perylene 9.12 ppm

                                        PCB (ppm)

                            1242     1254        1260    TOTAL
                            1.*10     0.00      0.43      1.53


                                   PCB Congeners (ppb)

         #1     #5     #29    #50     #87    #154     #188    #200     #209
         60.45         3.81           15.18                            1.98-



         #44     #52     #77    #101    #118     #126  #138    #153     #180
         51.63 73.92 24.53 37.23 17.93 4.11            39.01 12.22      24.07
         Lindane ND < .05 PPM       CL-HC (by MSD) Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

         ND < 10 ppm













                                          VC36-6


                                            PAH

          Naphthalene 0.56 ppm                 Acenaphthylene 0.15 ppm
          Acenaphthene 0.41 ppm                Fluorene 1.15 ppm
          Phenanthrene 4.16 ppm                Anthracene 1.14 ppm
          Fluoranthene 9.04 ppm                Pyrene     8.09 ppm
          B(a)anthracene 3.41 ppm              Chrysene 6.36 ppm
          B(b)fluoranthene 6.89 ppm            B(k)fluoranthene 2.38 ppm
          B(a)pyrene 4.24 ppm                 Indeno(1,2,3-cd)pyrene 16.85 ppm
          Dibenzo(a,h)anthracene 1.07 ppm
          Benzo(g,h,i)perylene 5.79 ppm

                                        PCB (ppm)

                            1242     1254        1260     TOTAL
                            0.91       0.01     0.34      1.26



                                   PCB Congeners (ppb)

          #1    #5     #29    #50     #87     #154    #188    #200     #209
          83.57        0.87           17.25


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          61.70 85.84 78.10 43.31 15.53 4.65           45.51 13.12      27.10



                                    CL-HC (by MSD)

          Lindane ND < .05 PPM                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1   ppm


                                   2,4-dinitrophenol

          ND < 10 ppm







                                                                                    6 2@



                                          VC36-7


                                             PAH

          Naphthalene 0.55 ppm                 Acenaphthylene 0.30 ppm
          Acenaphthene 1.02 ppm                Fluorene 1.85 ppm
          Phenanthrene 6.95 ppm                Anthracene 2.05 ppm
          Fluoranthene 13.57 ppm               Pyrene     11.37 ppm
          B(a)anthracene 4.59 ppm              Chrysene 9.60 ppm
          B(b)fluoranthene 6.99 ppm            B(k)fluoranthene 4.75 ppm
          B(a)pyrene 5.02 ppm                 Indeno(1,2,3-cd)pyrene 18.02 ppm
          Dibenzo(a,h)anthracene 1.58 ppm
          Benzo(g,,h,i)perylene 23.42 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.99       0.00     0.36      1.35



                                   PCB Congeners (ppb)

          #1    #5     #29    #50     #87     #154    #188    #200     #209
          58.07        2.94           21.74                            3.88


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          77.38 98.55 94.99 60.99 21.14 5.44           51.08 35.55      33.44



                                    CL-HC (by MSD)

          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm













                                          VC36-8


                                             PAH

          Naphthalene 1.36 ppm                 Acenaphthylene 0.20 ppm
          Acenaphthene 1.19 ppm                Fluorene 2.15 ppm
          Phenanthrene 6.41 ppm                Anthracene 2.03 ppm
          Fluoranthene 13.48 ppm               Pyrene     11.08 ppm
          B(a)anthracene 5.12 ppm              Chrysene 10.49 ppm
          B(b)fluoranthene 8.67 ppm            B(k)fluoranthene 5.84 ppm
          B(a)pyrene 5.66 ppm                 Indeno(1,2,3-cd)pyrene 18.04 ppm
          Dibenzo(a,h)anthracene 1.81 ppm
          Benzo(g,h,i)perylene 9.86 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            0.92       0.00     0.48      1.40


                                   PCB Congeners (ppb)

          #1    #5     #29    #50     #87     #154    #188    #200     #209
          43.97        2.88           13.30                            0.38


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          42.79 61.60 59.60 36.69 17.61 0.00           32.07 17.82      29.69


                                    CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm













                                          VC36-9


                                             PAH

          Naphthalene 0.38 ppm                 Acenaphthylene 0.28 ppm
          Acenaphthene 0.85 ppm                Fluorene 1.89 ppm
          Phenanthrene 7.72 ppm                Anthracene 2.16 ppm
          Fluoranthene 14.74 ppm               Pyrene     11.82 ppm
          B(a)anthracene 6.23 ppm              Chrysene 12.05 ppm
          B(b)fluoranthene 10.58 ppm           B(k)fluoranthene 7.25 ppm
          B(a)pyrene 7.94 ppm                 Indeno(1,2,3-cd)pyrene 19.22 ppm
          Dibenzo(a,h)anthracene   1.88 ppm
          Benzo(g,h,i)perylene 11.66 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            1.15       0.00      0.43     1.58


                                   PCB Congeners (ppb)
          #1    #5     #29     #50    #87     #154    #188    #200     #209
          53.26        2.96           25.28                            3.48


          #44    #52     #77     #101   #118     #126  #138    #153     #180
          83.96 120.54 97.98 63.01 25.25 4.03          48.47 32.16      27.59


                                    CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND < .1 ppm


                                  2,4-dinitrophenol

          ND < 10 ppm













                                         VC36-10


                                            PAH

          Naphthalene 2.53 ppm                 Acenaphthylene 0.36 ppm
          Acenaphthene 1.21 ppm                Fluorene 2.37 ppm
          Phenanthrene 7.97 ppm                Anthracene 2.64 ppm
          Fluoranthene 13.60 ppm               Pyrene    10.45 ppm
          B(a)anthracene 4.54 ppm              Chrysene 9.67 ppm
          B(b)fluoranthene 5.68 ppm            B(k)fluoranthene 3.85 ppm
          B(a)pyrene 5.21 ppm                 Indeno(1,2,3-cd)pyrene 15.48 ppm
          Dibenzo(a,h)anthracene 1.59 ppm
          Benzo(g,h,i)perylene 9.85 ppm

                                        PCB  (ppm)

                           1242      1254        1260    TOTAL
                            1.45      0.01      0.35      1.81


                                  PCB Congeners (ppb)
          #1    #5     #29    #50     #87    #154     #188   #200     #209
          83.26        7.86           33.57                           8.42


          #44    #52     #77    #101    #118    #126   #138   #153     #180
          83.60 144.11 128.54 67.09 27.79 3.76         49.33   19.40   34.05


                                    CL-HC (by MSD)
          Lindane ND < .05 ppm                    Chlordane ND < .5 ppm
          Mirex   ND < .1 ppm                     Methoxychlor ND < .1   ppm


                                  2,4-dinitrophenol

          ND < 10 ppm













                                         VC36-11


                                             PAH

         Naphthalene 0.59 ppm                  Acenaphthylene 0.18 ppm
         Acenaphthene 0.74 ppm                 Fluorene 2.25 ppm
         Phenanthrene 7.24 ppm                 Anthracene 2.45 ppm
         Fluoranthene 10.56 ppm                Pyrene     7.94 ppm
         B(a)anthracene 3.62 ppm               Chrysene 7.77 ppm
         B(b)fluoranthene 5.92 ppm             B(k)fluoranthene 2.48 ppm
         B(a)pyrene 3.72 ppm                  Indeno(1,2,3-cd)pyren.e 12.51 ppm
         Dibenzo(a,h)anthracene 0.80 ppm
         Benzo(g,h,i)perylene 5.35 ppm

                                        PCB (ppm)

                           1242      1254        1260     TOTAL
                            1.10       0.00     0.32      1.42



                                   PCB Congeners (ppb)
         #1     #5     #29    #50     #87     #154    #188    #200     #209
         58.60         4.49           25.31                            1.15


         #44     #52     #77    #101    #118     #126  #138    #153     #180
         71.71 102.48 91.76 58.89 21.30 3.78           40.53 18.25      23.42


                                    CL-HC (by MSD)
         Lindane ND < .05 ppm                      Chlordane ND < .5 ppm
         Mirex    ND < .1 ppm                      Methoxychlor ND < .1 ppm
         ND < 10 ppm             2   4-dinitrophenol












                                          VC36-12


                                             PAH

          Naphthalene 1.13 ppm                 Acenaphthylene 0.13 ppm
          Acenaphthene 0.76 ppm                Fluorene 1.53 ppm
          Phenanthrene 4.11 ppm                Anthracene 1.49 ppm
          Fluoranthene 6.35 ppm                Pyrene     4.80 ppm
          B(a)anthracene 2.77 ppm              Chrysene 4.48 ppm
          B(b)fluoranthene 4.05 ppm            B(k)fluoranthene 2.75 ppm
          B(a)pyrene 3.14 ppm                  Indeno(1,2,3-cd)pyrene 8.09 ppm
          Dibenzo(a,h)anthracene 0.72 ppm
          Benzo(g,h,i)perylene 5.13 ppm

                                        PCB (ppm)

                            1242     1254        1260     TOTAL
                            0.73       0.00      0.18      0.91


                                   PCB Congeners (ppb)
          #1    #5     #29     #50    #87     #154     #188   #200     #209
          62.40        4.65           15.28

          #44    #52     #77     #101   #118     #126   #138    #153    #180
          40.95 67.84 59.61 73.82 15.19 0.00            25.37 9.76      23.78

                                     CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND <     .5 ppm
          Mirex   ND < .1 ppm                      Methoxychlor ND   < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm













                                           V
                                              36-
                                              CPAH 13

          Naphthalene 0.02 ppm                   Acenaphthylene 0.09 ppm
          Acenaphthene 0.34 ppm                  Fluorene 1.00 ppm
          Phenanthrene 4.35 ppm                  Anthracene 1.15 ppm
          Fluoranthene 5.38 ppm                  Pyrene      4.23 ppm
          B(a)anthracene 1.87 ppm                Chrysene 3.52 ppm
          B(b)fluoranthene 2.07 ppm              B(k)fluoranthene 1.40 ppm
          B(a)pyrene 1.89 ppm                    Indeno(1,2,3-cd)pyrene 4.87 ppm
          Dibenzo(a,h)anthracene 0.48 ppm
          Benzo(g,h,i)perylene 2.63 ppm

                                          PCB (ppm)

                             1242       1254       1260     TOTAL
                             0.15         0.00'    0.07      0.22


                                     PCB Congeners (ppb)

          #1     #5     #29     #50      #87    #154     #188    #200     #209
          22.12         2.51            2.12                              0.44

          #44     #52     #77     #101    #118     #126   #138     #153    #180
          3.06    6.83    11.17 8.90      1.89     0.00   3.40     3.06    2.62

                                      CL-HC (by MSD)
          Lindane ND < .05 ppm                       Chlordane ND <      .5 ppm
          Mirex    ND < .1 ppm                       Methoxychlor ND    < .1 ppm


                                    2,4-dinitrophenol

          ND < 10 ppm












                                          VC36-14


                                             PAH

          Naphthalene 0.17 ppm                 Acenaphthylene ND <.10 ppm
          Acenaphthene 0.15 ppm                Fluorene 0.22 ppm
          Phenanthrene 0.65 ppm                Anthracene 0.18 ppm
          Fluoranthene 1.26 ppm                Pyrene     0.95 ppm
          B(a)anthracene 0.32 ppm              Chrysene 0.75 ppm
          B(b)fluoranthene 0.52 ppm            B(k)fluoranthene 0.36 ppm
          B(a)pyrene 0.44 ppm                  Indeno(1,2,3-cd)pyrene 1.41 ppm
          Dibenzo(a,h)anthracene 0.09 ppm
          Benzo(g,h,i)perylene 0.96 ppm

                                         PCB (ppm)

                             1242      1254      1260     TOTAL
                            0.08       0.00      0.04      0.12



                                   PCB Congeners (ppb)

          #1     #5    #29     #50      #87   #154     #188    #200     #209
          26.14                        1.83


          #44     #52    #77     #101    #118    #126   #138     #153    #180
          5.05    9.82   8.10    4.02    2.23    0.00   4.71     0.82    2.05
          Lindane ND < .05 PPM       CL-HC (by MSD) Chlordane ND <     .5 ppm
          mirex    ND < .1 PPM                      Methoxychlor ND  < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm












                                          VC36-15


                                             PAH

          Naphthalene 0.19 ppm                 Acenaphthylene 0.01 ppm
          Acenaphthene 0.23 ppm                Fluorene 0.25 ppm
          Phenanthrene 0.93 ppm                Anthracene 0.12 ppm
          Fluoranthene 1.24 ppm                Pyrene     0.96 ppm
          B(a)anthracene 0.35 ppm              Chrysene 0.82 ppm
          B(b)fluoranthene 0.55 ppm            B(k)fluoranthene 0.37 ppm
          B(a)pyrene 0.46 ppm                  Indeno(1,2,3-cd)pyrene 1.44 ppm
          Dibenzo(a,h)anthracene 0.11 ppm
          Benzo(g,h,i)perylene 0.94 ppm

                                         PCB (ppm)

                            1242       1254      1260     TOTAL
                            0.08       0.00      0.03      0.11



                                   PCB Congeners (ppb)

          #1     #5    #29     #50     #87    #154     #188    #200    #209
          18.65        2.14


          #44     #52    #77     #101    #118    #126   #138    #153    #180
          4.90    9.36   7.91    4.30    1.79    0.00   4.34    1.56     1.98


                                     CL-HC (by MSD)
          Lindane ND < .05 ppm                     Chlordane ND < .5 ppm
          Mirex    ND < .1 ppm                     Methoxychlor ND < .1 ppm


                                   2,4-dinitrophenol

          ND < 10 ppm







                                                                                71



                                 Cs-137 Measurements




              The results of Cs-137 counting on 6 cores i.e. VC-2, VC-6, VC-

         7, VC-9, VC-12, VC34/35, and VC-36 are summarized here. Pellets

         were made for VC-7, VC-12, VC-36, and VC-34/35 during May and June,

         1992 and for VC-2, and VC-6 during August 1992.

              At VC-2 (Milwaukee River), activity of Cs-137 is maximal at

         126  - 135 cm depth and has an increasing trend downwards which

         agrees with the Pb-210 data (Progress Report # 2) and may suggest

         that, cores deeper than 135 cm may be needed for further studies.

         From the Pb-210 data, the bottom of this core is from 1975.

              For VC-6 (South Menomonee Canal) , activity of the Cs-137

         activity is maximal at 0-6 cm depth and could be counted up to 36-

         42 cm depth, and beyond 42 cm depth no activity could be counted.

         After 30 cm. depth, the sample is mostly pure clay and has low % TOC

         values. From the Pb-210 data, the bottom of layer 4 is from 1973.

         Because of the low PB-210 and Cs-137 activities below the fourth

         layer, it appears likely that the area was dredged around 1973.

              VC-7 (@Kinnickinnic River) has maximum Cs-137 activity at 90-99

         cm depth (1963). Pellets for 36-45 cm depth could not be formed, as

         the sample consists of pure sand. This layer also contains lowest

         levels of PCB, PAH, and %TOC values. From the Pb-210 data, the

         bottom of this core is from 1941.

              VC-9 (Harbor Entrance) has the maximum Cs-137 activity at 49-

         56 cm depth (1963). From the Pb-210 data the bottom of this core is

         from 1939.

              VC-12 (Outer Harbor) has the maximum Cs-137 activity at 20-25






                                                                                     72



          cm depth (1963). The activity profile with depth supports the

          timing of the PCB concentrations in the core. The bottom of this

          core (80 cm) is from 1912.

               VC-34/35 (Menomonee River) has the maximum Cs-137 activity at

          126-135 cm depth. There is a general increase in Cs-137 activity

          with depth, which agrees with the Pb-210 date at the bottom of
          1966. VC-36 (South Menomonee Canal) has maximum Cs-137 activity at
          90-100 cm depth. The decline below layer 9 may be related to

          dredging around 1970 (Gin, 1992). The Pb-210 activities and %TOC

          values also drop beyond this layer.

               Depth vs activity graphs for VC-2, VC-6, VC-7, VC-9, VC-12,

           C-34/35, and VC-36 along with tables of calculations for VC-6, VC-

          7, VC-34/35, and VC-36 are enclosed. Tables of calculations for

          VC-9 (Progress Report # 2), VC-12, and VC-36 (Progress Report # 3)

          have already been submitted in previous reports. Sampling and

          porosity, LOI, and TOC measurements are described         in   Progress

          Report # 1. Information on sources of PAHs may be found in the M.S.

          Thesis of A.K.Singh (1992).




                                        REFERENCES

               Gin, M.F. and E.R. Christensen, December 1991, Sampling Site

          Location and Measurements of Porosity, LOI, and TOC, Progress

          Report # I to WCMP.

               Gin, M.F. and E.R.Christensen, April 1992, Pb-210 and Cs-137

          Measurements, Progress Report # 2 to WCMP.

               Ni,   F,,   A.K,Singh,    and    E,R.Christensen,    July     1992,






                                                                               75



         Measurements of Priority Organics and Cs-137, Progress Report # 3

         to WCMP.


              Gin, M.F. 1992, Sedimentation Patterns of the Milwaukee Harbor

         Estuary Determined from TOC, Pb-210, and Cs-137, M.S. Thesis,

         Department of Civil Engineering and Mechanics, University of

         Wisconsin-Milwaukee.

              Singh, A.K. 1992, A Source Receptor Method for Determining

         Non-point Sources of PAHs to Milwaukee Harbor Estuary. M. S. Thesis,

         Department of Civil Engineering and Mechanics, University of

         Wisconsin-Milwaukee.



                                                                                                                                                                At-









                         STATION:                       VC-2
                         LOCATION:                      43 Deg.02.92'N Milwaukee River
                                                        87 Deg.54.7UW Cherry Street Bridge
                         WATER DEPTH:                   2.2 m (7.3ft)
                         CORE TYPE:                     Push Core
                         CORELENGTH:                    Core pushed 3m down, only a 1.45 m core retrived
                         DATE SAMPLED:                  10/16/91

                                                Depth      We-ight  --Height     Count                Correction      Cs-137    Uncertainty
                                                cms)       (gms)      (cms)       Date                   factor   _(dpm/gml       (dpm/gm)
                         VC2_1                  0-9        28.55      0.774     08/07/92      0.011      1.019        0.847         0.071
                         VC2-2       343        9-18       27.49      0.714     08/08/92      0.011      1.019        1.047         0.077
                         VC2-3       277        18-27      26.97      0.714     08/09/92      0.011      1.019        0.862         0.071
                         VC2-4       367        27-36      26.05      0.675     08/10/92      0.011      1.019        1.182         0.077
                         VC2-5       421        36-45      25.52      0.694     08/11/92      0.011      1.019        1.385         0.085
                         VC2-6       402        45-54      25.40      0.635     08/12/92      0.011      1.019        1.328         0.081
                         VC2-7       384        54-63      23.47      0.635     08/13/92      0.011      1.019        1.373         0.095
                         VC2-8       448        63-72      22.71      0.635     08114/92      0.011      1.019        1.656         0.098
                         VC2-9       508        72-81      21.91      0.635     08/15/92      0.011      1.019        1.946         0.109
                         VC2-101     551        81-90      21.21      0.556     08/16/92      0.012      1.019        1.999         0.104
                         VC2-11      633        90-99      19.46      0.556     08/17/92      0.012      1.019        2.503         0.114
                         VC2-12      611        99-108     19.47      0.556     08/18/92      0.012      1.020        2.417         0.117
                         VC2-13      620        108-117    19.74      0.556     08/19/92      0.012      1.020        2.419         0.117
                         VC2-14      704        117-126    19.09      0.556     08/20/92      0.012      1.020        2.840         0.124
                         Lyg-_15     -874       126-135    17.31      0.556     08/21/92      0.012      1.020        3.889         0.149
                         live time 70000 seconds
















                          STATION                        VC-6
                          LOCATION:                      43 Deg. 01.89'N Menomonee River
                                                         87 Deg. 54.91'W
                          WATER DEPTH:                   20m
                          CORE TYPE:                     Long gravity core
                          CORELENGTH:                    1m.
                          DATE SAMPLED:                  10/30/91


                                      rea        ept       Weight       eig t        unt                   rrection                 ncertainty
                                                 (cms)      (gms)      (cms)       Date         11         factor    (dpm/gm)      (dpm/gm)
                          VC6-1       267        0-6        21.26      0.5Y6     08/22/92      0.612       1.019        0.966         0.083
                          VC6-2       231        6-12       24.96      0.714     08/24/92      0.011       1.019        0.777         0.077
                          VC6-3       246        12-18      31.83      0.794     08/25/92      0.011       1.019        0.649         0.059
                          VC6-4       179        18-24      34.78      0.794     08/26/92      0.011       1.019        0.432         0.046
                          VC6-5       016        24-30      21.36      0.635     08/27/92      0.011       1.019        0.063         0.056
                          VC6-6       005        30-36      22.81      0.635     08/29/92      0.011       1.019        0.018         0.055
                          VC6-7       008        36-42      22.81      0.635     08/31/92      0.011       1.019        0.029         0.053
                          VC6-8       -20        42-48      22.68      0.635     09/01/92      0.011       1.020        0.000         0.000
                          VC6-12      -35        66-72      21.88      0.556     09/02/92      0.012       1.020        0.000         0.000
                          live time 70000 seconds
















                          STATION:                        VC-7
                          LOCATION:                       43 Deg.00.50'N Kinnickinnic, River
                                                          87 Deg 54.59'N
                          WATER DEPTH:                    2.8 m 9.8(ft)
                          CORE DEPTH:                     Push Core
                          CORELENGTH                      Core pushed 2.25 m down,only a 1.45 m core retrieved
                          DATESAMPLED:                    10/14/91


                                      Area       Depth       Weight     Heigfit     Count      -         Mirection       ZS-137      Uncertainty
                                                 (cms)       (gms)      (cms)        Date          11        factor     (dpm/gm)      (dpm/gm)
                          VC7-1       125        0-9      --24.84       0.714                                1.017     --U.-4144        0.0682
                          VC7-2       161        9-18        25.47      0.714      07/08/92      0.011'      1.017       0.5206         0.0557
                          VC7-3       183        18-27       24.51      0.714      07/09192      0.011       1,017       0.6149         0.0609
                          VC7-4       58         27-36       26.12      0.714      07/10/92      0.011       1.017       0.1829         0.0557
                          VC7-6       479        45-54       22.04      0.635      07/11/92      0.011       1.017       1.7497         0.1010
                          VC7-7       660        54-63       24.34      0.556      07/13/92      0.012       1.017       2.1341         0.1075
                          VC7-8       1455       63-72       24.79      0.635      07/15/92      0.011       1.017       4.7263         0.1407
                          VC7-9       1781       72-81       21.44      0.516      07/16/92      0.012       1.018       6.4651         0.1656
                          VC7-10      2064       81-90       25.01      0.595      07/17/92      0.012       1.018       6.5711         0.1580
                          VC7-11      3194       90-99       25.21      0.635      07/18/92      0.011       1.018       10.2043        0.1910
                          VC7-12      1452       99-108      25.15      0.635      07/19192      0.011       1.018       4.6502         0.1344
                          VC7-13      1038       108-117     24.85      0.714      07/20/92      0.011       1.018       3.4425         0.1235
                          VC7-14      1142       117-126     24.36      0.635      07/21/92      0.011       1.018       3.7765         0.1337
                            @-151     .442       126-135     25.09      0.714      07/22/92      0.011       1.018       1.4520         0.0867 JI

                          live time 70000 seconds




                                                                         L---j










                         STATION:                           VC-34/35
                         LOCATION:                          43 Deg.01.99'N Menomonee River
                                                            87 Deg 55.18'N
                         WATER DEPTH:                       5.2 m 17(ft)
                         CORE DEPTH:                        Push Core
                         CORELENGTH                         Core pushed 2.25 m down,only a 1.45 m core retrieved
                         DATE SAMPLED:                      10/16/91


                                        Area       Deptfi     Weight     Height         unt         11  . Cor-r-ec-firo-n CS-137     Uncertainty
                                                   (cms)      (gms) _Lcms)            Date                    factor    (dpm/gm)      (dpm/gm)
                         VC34/35-1      302         0-9       26-99      0.714, --07/2T/92-      0.01 12'---1T1-8-                      0.0750
                         VC34/35-2      260        9-18       27.99      0.714      07/24/92     0.0112       1*018       0.766         0.0707
                         VC34/35-3      393        18-27      27.59      0.714      07/25/92     0.0112       1.018       1.174         0.0756
                         VC34/35-4      358.       27-36      28.16      0.794      07/26/92     0.0109       1.018       1.072         0.0785
                         VC34/35-5      368        36-45      26.57      0.714      07/27/92     0.0112       1.018       1.142         0.0789
                         VC34/35-6      487        45-54      28.51      0.714      07/28/92     0.0137       1.018       1.408         0.0823
                         VC34/35-7      445        54-63      29.52      0.794      07/29/92     0.0109       1.018       1.272         0.0795
                         VC34/35-8      360        63-72      24.76      0.714      07/30/92     0.0112       1.018       1.199         0.0985
                         VC34/35-9      511        72-81      28.44      0.794      07/31/92     0.0109       1.018       1.516         0.0859
                         VC34/35-10     797        81-90      32.41      0.794      08/01/92     0.0109       1.018       2.075         0.0850
                         VC34/35-11     688        90-99      28.52      0.794      08/02/92     0.0109       1.019       2.036         0.0926
                         VC34/35-12     691        99-108     28.87      0.794      08/03/92     0.0109       1.019       2.020         0.0932
                         VC34/35-13     722        108-117    25.23      0.714      08/04/92     0.0112       1.019       1.845         0.1085
                         VC34/35-1411   640        117-126    25.12      0.655      08/05/92     0.0114       1.019       2.066         0.0988
                         .IVC34/35-1511 761        126-135    26.82      0.714      08/06/92     0.0112       1.019       2.341       -0.1083

                         live time 70000 seconds







                                                                                   70


                                         VC-2


                                 Cs-137,Activity (dpm/g)


                    0          1          2          3          4           5
                  0


                10


                20


                30


                40


                50


                60


          Q-4   70
          Q)
          r::)
                80


                90 -


               100 -


               110 -


               120 -


               130 -



               140 -


               iso -







                                                                                                 79


                                                VC-6


                                      Cs- 137 Activity (dpm/g)


                      0.0      0.2     0.4      0.6      0.8      1.0     1.2      1.4

                     0





                   10




                   20




                   30





                   40




                   50




                   60 -





                   70 -





                   80 -




                   90 -






                                                                                  BO


                                        VC-7


                                Cs-1,37 Activity (dpm/g)


                   0    1    2    3    4    5    6    7    8     9   10   11

                  0


                10


                20


                30


                40
                50          t
                60            t

                70


                80


                90


               100



               110 -


               120 -


               130 -
                          t

               140 -



               150 -









                                         VC-9

                                     Cs- 137 Activity (dpm/9)
                         0                   3     4     5      6      7



                     10                     v     1.8     1. 9 cm/yr


                     20 -




                      30-




                     40 -




                     50 -
                                                                1963
qw                                                            t
                     60                       t
                    70      1954

                    80




                    90  -




                   100


AL
7
i









                                                     VC- 12


                                          Cs- 137 Activity (dpm/g)

                         0                            2             3

                       0




                     10




                     20




                     30



             0
                     40




             9:@     50




                     60




                     70




                     80




                     90




                    100







                                         VC-34/35


                                Cs-137 Activity (dpm/g)


                    0                     2          3          4

                  0


                10


                20


                30


                40


                50 -


                60 -


                70 -


                80 -


                90 -



               100 -


               110 -


               120 -


               130 -



               140 -


               150









                                         VC-36


                                Cs-137 Activity (dpm/g)


                   0                      2          3          4          5

                 0


               10


               20


               30


               40


               50


               60


               70
qw

               80  -


               90


              100 -


              110 -



              120 -
              130 -  t

              140 -


              150 -
                              t t





                                                                             THE
                           UNIVERSITY OF WISCONSIN
                                                             MILWAUKEE








                               COLLEGE OF ENGINEERING
                                                                           AND
                                                 APPLIED SCIENCE


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                     SEDIMENTATION PATTERNS OF THE MILWAUKEE
                          HARBOR ESTUARY DETERMINED FROM
                       TOC, Pb-210, AND Cs-137 MEASUREMENTS

                                        By

                                  Michael F. Gin







                              A Thesis Submitted in
                           Partial Fulfillment of the
                         Requirements for the Degree of


                                Master of Science

                               in Civil Engineering




                                        at

                     The University of Wisconsin - Milwaukee

                                    May, 1992










                      Sedimentation Patterns of the Milwaukee
                          Harbor Estuary Determined from
                       TOC, Pb-210, and Cs-137 Measurements

                                        By

                                  Michael F. Gin






                              A Thesis Submitted in
                            Partial Fulfillment of the
                          Requirements for the Degree of


                                Master of Science

                               in Civil Engineering





                                        at

                     The University of Wisconsin   Milwaukee

                                    May, 1992








                       Major Professor                    Date







                  Graduate School Approval                Date












                                        ABSTRACT






                Sedimentation Patterns of the Milwaukee Harbor Estuary

                 Determin6d fro m TOC, Pb-210, and Cs-137 Measurements



                                           By




                                     Michael F. Gin






                     The University of Wisconsin - Milwaukee, 1992

                Under the Supervision of Professor Erik R. Christensen





             Thirty sediment cores from the Milwaukee Harbor Estuary were

             dated by the Pb-210 method. These cores were also analyzed

             for porosity and for total organic carbon (TOC) by the loss on

             ignition (LOI) and direct elemental organic carbon methods.

             The Cs-137 method was successfully employed to confirm the Pb-

             210 dates of one core (VC-9). This information was used to

             identify the sedimentation patterns of the system and to

             determine the vertical and horizontal distribution of organic

             carbon.   Areas of apparent high sedimentation included the

             Milwaukee River, especially just upstream of the confluence of

             the Milwaukee and Menomonee Riverst the Menomonee River and


                                           iii










              the South Menomonee Canal, and the Kinnickinnic River near the
              Great Lakes Research Facility. Furthermore, the outer harbor        40

              has been identified as having a relatively small sedimentation

              rate. This system is quite dynamic and there are many factors

              that can disrupt normal sedimentation patterns. These factors

              include dredging and storms besides other contributors to
              mixing.    Therefore the interpretation of Pb-210 activity
              profiles is often difficult. However, a general picture of
              the sedimentation patterns in the Milwaukee Harbor Estuary can

              be seen-through the use of TOC, Pb-210 and Cs-137 methods.



              A correlation between LOI and TOC was determined (r = 0.68).
              Therefore, LOI can be used as a first approximation of total

              organic carbon. However, if a more accurate value of total

              organic carbon is desired, the more tedious and costly TOC

              analysis must be performed.








                        Major Professor                           Date













                                            iv












                                    ACKNOWLEDGEMENTS




             I would like to thank Professor Erik R. Christensen for his

             support and direction during the course of this research. It

             was a pleasure working with him. I am also grateful for the

             members of my graduation committee, Professor Hector Bravo and

             Dr. David N. Edgington, and for their comments and

             suggestions.



             I would also like to thank Gary Reinke and Dave Cleary f or

             their assistance in sampling and in performing the LOI

             analyses. Also, thanks are extended to the crews of the R/V

             Pelagos and R/V Neeskay.



             Special thanks to my fiance, Jeanne, and my family for their

             encouragement, support and patience during my graduate

             studies.




             Above all I would like to thank the Lord Jesus Christ f or life

             and the opportunity to do this work.



             This work was supported in part by the Milwaukee Metropolitan

             Sewerage District, Task Order 906, and the Wisconsin Coastal

             Management Program, P.O. JADB00474.






                                            v












                                         TABLE OF CONTENTS

                LIST OF FIGURES  ...........................................     viii

                LIST OF TABLES  ...........................................        xii

                I.          INTRODUCTION   ...................................      1

                                 objectives   ................................      I

                                 Literature review   .........................      2


                                       Pb-210  ...............................      2


                                       Cs-137  ...............................      7

                                       Porosity ....................    o ........  8

                                       Loss on Ignition (LOI) & Total

                                             Organic Carbon (TOC)   ............   10

                                       History of the Milwaukee Harbor

                                             Estuary.. ...............     ....... 10

                Ii.        MATERIALS AND METHODS.. o   ...... o.........   ......  13

                                 Sampling Sites and Methods    ................    13

                                 Porosity   .................................      16

                                 Loss on Ignition (LOI)..   ............           17

                                 Total Organic Carbon (TOC)    ................    17

                                 Pb-210 ........................    o...... o ...  20


                                 Cs-137 ...... o ............................      26


                III.        RESULTS AND DISCUSSION   ........ o......... o ....  o. 28

                                 Final Values of LOI, TOC, Pb-210 and

                                       Cs-137 ..................   o....... o ...  28

                                 Sedimentation patterns    ....................    29

                                 CIC results  ........... ooo .................    44

                                 %TOC maps ....... ; ...o...................   o. 48          EMIL
                                                 vi                                         44W










                             Correlation of TOC and LOI  ................   55


             IV.        CONCLUSIONS ....................................    58


             V.         REFERENCES .....................................    60


             Vi.        APPENDICES .....................................    63

                             Appendix A Summary of Porosity, LOI, TOC,

                                             Bulk Density, Pb-210, and

                                             Cs-137 (if applicable) for

                                             Each Core ........ o.........  63

                             Appendix B Graphical Representation of

                                             Each Core.. ...........        94

                                         -Depth vs. Porosity

                                         -Depth vs. %TOC & %LOI

                                         -Depth vs. Excess Pb-210

                                             Activity

                                         -Excess Pb-210 Activity vs.

                                             Cumulative Mass

                             Appendix C Computer Program to Calculate

                                             Slope and Sedimentation

                                             Rates ......................   154

















AIL
                                            vii





                 Figure                  LIST OF FIGURES                         Pag--
                  1   U-238 Decay Scheme  ..................................       3
                  2   Environmental Pathways of Radioactive Lead Isotopes.         5
                  3   Milwaukee Harbor Estuary   ............................      9
                  4   1990 Sampling Sites  .................................     14
                  5   1991 Sampling Sites  ..................................    15
                  6   A Typical Chromatogram.  ..............................    19
                  7   Map of Sedimentation Rates   ..........................    33
                  8   Depth vs. Cs-137 Activity for VC-9   ..................    42
                  9    TOC at 0-10 cm Depth & Grab Samples, 1990      .........  49
               10     t TOC at 10-20 cm Depth, 1990   .......................    50
               11      TOC at  > 20 cm Depth, 1990  ........................     51
               12      TOC at  0 .. @30 cm Depth, 1991 ......o..........o ...... 52
               13     tTOC at 30-60 cm Depth, 1991  ...... o... -oo   ........   53
               14     tTOC at > 60 cm. Depth, 1991 ...........  ----        ...  54
               15     TOC vs. LOI for Grab. & 1990 Total Composites   ........   56
               16     TOC vs. LOI for 1991 VC Composite  .....o ..............   57
               B 1    Depth vs. Porosity and Depth vs. tTOC & tLOI, C-1... 95
               B 2    Depth vs. Excess Pb-210 Activity and Excess Pb-210
                      Activity vs. Cumulative Mass, C-1.   ........... o  .....  96
               B 3    Depth vs. Porosity and Depth vs. tTOC & tLOI, C-2     ...  97
               B 4    Depth vs. Excess Pb-210 Activity and Excess Pb-210
                      Activity vs. Cumulative Mass, C-2...   ......... o .....   98
               B 5    Depth vs. Porosity and Depth vs. %TOC & %LOI, C-3- 99
               B 6    Depth vs. Excess Pb-210 Activity and Excess Pb-210


                                              viii










                      Activity vs. Cumulative Mass, C-3      ..................    100

               * 7 Depth vs. Porosity and Depth vs. %TOC & %LOI, C-4          ...  101

               * 8 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-4      ..................    102

               * 9 Depth vs. Porosity and Depth vs. %TOC & %LOI, C-5          ...  103

               BIO Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-5      ..................    104

               B11 Depth vs. Porosity and Depth vs. %TOC & %LOI, C-6          ...  105

               B12 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-6.@      ................... 106

               B13 Depth vs. Porosity and Depth vs. %TOC & %LOI, C-7          ...  107

               B14 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-7      ....................  108

               B15   Depth vs. Porosity and Depth vs.' %TOC & %LOI, C-8       ...  109
qw             B16   Depth vs. Excess Pb-210 Activity and Excess Pb-210
                      Activity vs. Cumulative Mass, C-8      ..................    110

               B17   Depth vs. Porosity and Depth vs. %TOC & %LOI, C-9- 111
               B18   Deptfi vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-9-      -o   ...... - ... 112

               B19   Depth vs. Porosity and Depth vs. %TOC & %LOI, C-10o. 113

               B20   Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-10..     ..... --- ... 114

               B21   Depth vs. Porosity and Depth vs. %TOC & %LOI, GC-11. 115

               B22   Depth vs. Porosity and Depth vs. %TOC & %LOI, C-12.. 116

               B23   Depth vs. Excess Pb-210 Activity and Excess Pb-210

                      Activity vs. Cumulative Mass, C-12     ....... o  ....... o. 117


                                                 ix










               B24 Depth vs. Porosity and Depth vs. %TOC & %LOI, C-13.. 118

               B25 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                     Activity vs. Cumulative Mass, C-13   ................. jig

               B26 Depth vs. Porosity and Depth vs. %TOC & %LOI, GC-15. 120

               B27  Depth vs. Excess Pb-210 Activity, GC-15  .............  121

               B28  Depth vs. Porosity and Depth vs. %TOC & %LOI, GC-16.    122

               B29  Depth vs. Porosity and Depth vs. %TOC & %LOI, GCT-I.    123

               B30  Depth vs. Excess Pb-210 Activity, GCT-1  .............  124

               B31  Depth vs. Porosity and Depth vs. %TOC & %LOI, GCT-2.    125

               B32  Depth vs. Excess Pb-210 Activity, GCT-2  .............  126

               B33  Depth vs. Porosity and Depth vs   %TOC & %LOI, GCT-3.   127

               B34  Depth vs. Excess Pb-210 Activity, GCT-3  .............  128

               B35  Depth vs. Porosity and Depth vs. %TOC & %LOI, GCT-4.    129

               B36  Depth vs. Excess Pb-210 Activity, GCT-4  .............  130

               B37* Depth vs. Porosity and Depth vs. %TOC & 515LOI, GCT-5.  131

               B38  Depth vs. Excess Pb-210 Activity, GCT-5  .............  132

               B39  Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-2..    133

               B40  Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-2  .................   134

               B41  Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-3.. 135

               B42  Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-3  .................   136

               B43  Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-4.. 137

               B44  Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-6.. 138

               -B45 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-6  .................   139


                                             x










             B46 Depth vs. Porosity and Depth vs. ITOC 6 tLOI, VC-7.. 140

             B47 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-7 ................. 141

             B48 Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-8.. 142

             B49 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-8 ................. 143

             B50 Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-9.. 144

             B51, Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-9 ................. 145

             B52 Depth vs. Excess Pb-210-Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-9 ................. 146

             B53 Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-12. 147

             B54 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-12  ................ 148

             B55 Depth vs. Porosity and Depth vs. %TOC & %LOI,

                    VC-34/35 ........................................... 149

             B56 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-34/35  ............. 150

             B57- Depth vs. Excess Pb-210. Activity and Excess Pb-210
 J                  Activity vs. Cumulative Mass, VC-34/35  ............. 151

             B58 Depth vs. Porosity and Depth vs. %TOC & %LOI, VC-36. 152

             B59 Depth vs. Excess Pb-210 Activity and Excess Pb-210

                    Activity vs. Cumulative Mass, VC-36  ................ 153





Alk
0









                                           xi












                                       LIST OF TABLES


                Table                                                        Page

                1   Slope, Sedimentation Rate & Velocity for 1990

                     Cores ..............................................    30

                2   Slope, Sedimentation Rate & Velocity    for 1991

                     Cores ...............................................   31

                3   Comparison of V to SEWRPC  ...........................   32

                4   CIC Dates for C-7 & 8 and GC-16  .....................   45


                5   CIC Dates for C-10 & 12  ..............................  46

                6   CIC Dates and Comparison to Pb-210 and Cs-137 Dates

                     for VC-9  ...........................................   47

              * 1   Summary of Porosity, LOI, TOC, Bulk Density and

                     Pb-210 for C-1 .....................................    64

              * 2   Summary of Porosity, LOI, TOC, Bulk Density     and

                     Pb-210 for C-2 .....................................    65

              * 3   Summary of Porosity, LOI, TOC, Bulk Density and

                     Pb-210 for C-3 .....................................    66

              * 4   Summary of Porosity, LOI, TOC, Bulk Density, Pb-210

                     and Cs-137 for C-4  .................................   67

              * 5   Summary of Porosity, LOI, TOC, Bulk Density and

                     Pb-210 for C-5 .....................................    68

              * 6   Summary of Porosity, LOI, TOC, Bulk Density and

                     Pb-210 for C-6 .....................................    69

              * 7   Summary of Porosity, LOI, TOC, Bulk Density and

                     Pb-210 for C-7 .....................................    70

              * 8 Summary of Porosity, LOI, TOC, Bulk Density and


                                             xii









                    Pb-210 for C-8   .....................................  71

             A 9 Summary of Porosity, LOI, TOC, Bulk Density, Pb-210

                    and Cs-137 for C-9 ................  .................  72

             AlO Summary of Porosity, LOI, TOC, Bulk Density and

                    Pb-210 for C-10  ....................................   73

             All Summary of Porosity,*LOI, TOC, Bulk Density and

                    Pb-210 for GC-11 ...................................    74

             A12 Summary   of Porosity, LOI, TOC, Bulk Density and

                    Pb-210 for C-12  ....................................   75

             A13 Summary of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for C-13  ....................................   76

             A14 Summary of Porosity, LOI, TOC, Bulk Density and

                    Pb-210 for GC-15 ...................................    77

             A15 Summary of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for GC-16 ...................................

             A16 Summary of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for GCT-l ...................................    79

             A17 Summary   of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for GCT-2 .... o ..............................  80

             A18 Summary   of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for GCT-3 .................. o ................  81
             A19 Summary of Porosity, LOI, TOC, Bulk Density and
                    Pb-210 for GCT-4 ...................................    82
             A20 Summary   of Porosity, LOI, TOC, Bulk Density and

                    Pb-210 for GCT-5 ...................................    83
             A21 Summary   of Porosity, LOI, TOC, Bulk Density and


                                           xiii











                      Pb-210 for VC-2 ....................................    84

               A22 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-3 ....................................    85

               A23 Summary of Porosity, LOI, TOC, Bulk Density,

                      Pb-210, and Cs-137 for VC-4  ........................   86

               A24 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-6 ....................................    87

               A25 Summary of Porosity,* LOI, TOC, Bulk Density and

                      Pb-210 for VC-7 ....................................    88

               A26 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-8 ....................................    89

               A27 Summary of Porosity, LOI, TOC, Bulk Density,

                      Pb-210,, andICs-137 for VC-9  ........................  90

               A28 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-12  ...................................   91

               A29 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-34/35  ................................   92

               A30 Summary of Porosity, LOI, TOC, Bulk Density and

                      Pb-210 for VC-36  ...................................   93



















                                             xiv












                                    I. INTRODUCTION




             Lake sediments are often the ultimate repository for

             environmental pollutants and therefore are of concern in a

             toxic substances management plan.    Once in the sediments,

             pollutants may still be available to the biota and cause

             adverse effects. Toxic substances tend to accumulate in areas

             where sediments accumulate, which is where the sedimentation

             rates are high. Therefore an understanding of sedimentation

             patterns is helpful in identifying areas of concert.

             Sedimentation patterns can be identified by Pb-210 and Cs-137

             dating techniques, as well as by organic carbon content.



             Obiectives

             The objective of this project is to examine the sedimentation

             patterns of the Milwaukee Harbor estuary. These patterns will

             be determined primarily from a linear regression analysis of

             Pb-210 activity measurements.   Cs-137, porosity, and total

             organic carbon measurements will also be used to understand

             the sedimentation patterns. Total organic carbon content will

             be calculated by the loss on ignition (LOI) assay and the

             total organic carbon (TOC) assay. This research is the first

             step in assessing the state of pollution in the Milwaukee

             Harbor estuary.    This assessment includes the type of

             contaminant as well as the horizontal and            vertical

             distribution of the pollutants.   The information gained by
             this thesis research, in conjunction with the corresponding









                                                                            2


              priority pollutant organic analyses, will assist in developing

              an appropriate toxic substances management plan for the

              Milwaukee Harbor estuary.



              Literature Review




              Pb-210

              Pb-210 (t]@ = 22.26 years) is a naturally occurring radio-

              isotope that can be used as an environmental tracer. The use

              of Pb-210 as a geochronological tool of lake and nearshore

              ocean sediments began in the early 1970's (Krishnaswami, et

              al., 1971; Koide, et al., 1972; Koide, et al., 1973).

              Krishnaswami, et al. (1971) concluded that Pb-210 activity is

              ideal for dating lake sediments :5100 years old.           This

              conclusion arises from the fact that in water, lead is quickly

              removed from solution onto particulate matter so that the

              unsupported or excess Pb-210 activity in the sediments is

              essentially due to direct atmospheric fallout (Krishnaswami,

              et al., 1971; Robbins and Edgington, 1975). Supported Pb-210

              is due to the existing Ra-226 in the sediment that decays to

              Pb-210.




              Pb-210, along with most natural radioactivity, occurs as a

              result of the uranium and thorium. present in the earth's crust

              (Robbins, 1978). UrAnium-238 decays ultimately to Pb-206, a

              nonradioactive lead isotope, by a series of a and 0 emissions

              with Pb-210 as an intermediate in this decay scheme (Fig. I).








                                                                                                                                                       3


                                                 Figurel . Decay Sch                    gme of         238   U to Stable Pb.
                                                 Vertical Arrow is Alpha Decay and Diagonal
                                                 Arrow is Beta                 Decay (Broecker and Peng, 1982).












                                                                                    U-234
                                                              4.4 r X $*1        2-4 a It 403


                                                                        PA-234



                                                                                    Th-230




                                                 ActWum


                                                                                    Ita-226
                                                                                 LGZ x 103
                                                                                    .1"


                                                 Feandum


                                                                                    &a-222
                                                                                    3.6Z





                                                                                                      FO-214             FO-210
                                                                                    3.05                x to-              130
                                                                                      W            t:@@ WC
                                                 Bismuth                                    Oi-214              8;-210-

                                                                                    rb-2W                                 rb-2%
                                                                                    Z4.4               ZZ.3             .4.bk 61.d









                                                                                  4


                It is only due to several remarkable occurrences that Pb-210

                can move through the environment. In the decay series, radon

                gas (Rn-222) and other chemically inert gases are formed.

                These gases diffuse out of the earth's crust and are

                transported by turbulence and advection into the atmosphere.

                Because the radon decay products are heavy metals, they

                quickly become attached to natural aerosols. In time, Pb-210

                returns to earth through atmospheric scavenging processes

                such as rain, snow, and dry fallout (Fig. 2).        Once in the

                water column, Pb-210 is scavenged by settling sediment

                particles (Robbins and Edgington, 1975). However, Leland, et

                al. (1973) concluded that organic matter is more important in

                the complexation of lead in lake water and sediments than

                adsorption on clays of hydrous oxides.        Therefore, Pb-210

                activity will be greater in areas of high organic matter.



                The decay of uranium is a continuous process.           In f act,

                Robbins, et al. (1978) examined the sediments of the Great

                Lakes and concluded that Pb-210 is added to the sediments at

                nearly a constant rate. Because of the constant addition of

                Pb-210 and the fact of its continuous decay within the

                sediment, the difference between the Pb-210 activity at the

                sediment-water interf ace and at any depth can be used to

                calculate the approximate age of that layer.         Appleby and

                Oldfield (1978) have discussed a Pb-210 dating model based on

                this assumption of constant initial concentration (CIC). In

                this model, the rates of mass sedimentation and unsupported











                                                         222Rn---*'214   Pb---4-210






                                                                                             Jev

                                                                                                Ito



                                                                                                     All

                                            222Rn; 22ORn









                       Fig. 2     En@ironrnental pathwayi of the radioactive lead Isotopes.   (Robbins, 1978) Used with permission

                                                                                                                                                                   Lq










                                                                            6


              Pb-210 supply are proportional to one another such that the

              Pb-210 concentration (activity) always have a constant value

              at the top of the sediment core. Age t (year) of a layer of

              depth is given by:


               t=1                                                      (1)
                     _SZ
                   in( SO)

                   where I     ln(2)   decay constant

                         I for Pb-210   0.03114 yr-1

                         So = Pb-210 activity (dpm/g) at the water-sediment

                                  interface

                         sz = Pb-210 activity (dpm/g) at a given depth

             However, as Robbins, et al. (1978) have noted, under certain
             conditions, radioactivity profiles may be altered by sediment
             reworking, storm events, and other processes.             These
             complications raise the question of the reliability of the
             interpretation of the Pb-210 method. However, by the use of
             suitable models and alternative dating methods based on pollen

             and Cs-137, they have successfully used the Pb-210 method to

             date lake sediments and have attributed anomalies in the

             profiles to the above processes.



             Another method of determining sedimentation rates from Pb-210

             data, and the method used in this research, is to determine

             rates from a linear regression. This approach is based on the

             CIC analysis in its most restrictive form, a constant initial

             concentration and a constant sedimentation rate.









                                                                           7


              Appleby et al. (1979) discussed the constant rate of supply
              (CRS) model as a third method of determining sedimentation
              rates. This model assumes that the net supply of unsupported

              Pb-210  is   constant   despite  variations    in  the    mass

              sedimentation rate. This method is not used in this research

              because there is not a constant rate of supply.



              Pb-210 decays via weak 0 and y (46.5 KeV) emissions and
              therefore is not usually detected directly.     Two indirect
              methods of measuring Pb-210 activity are detecting the P-decay
              of Bi-210 (th = 5 days), a daughter product of Pb-210, and
              detecting the a particles of Po-210 (th = 138 days) , a
              granddaughter product of Pb-210. The Pb-210 activity can be
              inferred from the ingrowth of Bi-210, or from Po-210 assuming
              radioactive equilibrium (Robbins, 1978). For this research,
              alpha spectroscopy is used to measure Pb-210 activity. The
              overall efficiency (plating and a-detector efficiency) of Po-
              208 recovery and detection has been checked to be -17%.




              Cs-137

              Cs-137 (t,@ = 30.17 years) is an artificial nuclide that has
              also been exploited as a sediment dating tool and can be used
              to check Pb-210 data (Robbins and Edgington, 1975; Hermanson
              and Christensen, 1991). Cs-137 is introduced to the sediment
              similarly to Pb-210, as it is scavenged by settling sediment
              particles in the water column (Robbins and Edgington, 1975).
              However, unlike Pb-210, this method is not applicable in









                                                                               8


               saltwater. Cs-137 is one of the products of nuclear weapons
               testing, which began in 1954 and peaked in 1963 (Pierson,            40
               1971).   Therefore, the earliest occurrence of Cs-137 should

               correspond to a Pb-210 dated layer of 1954, and the peak Cs-
               137 activity corresponds to 1963 (Robbins and Edgington, 1975;
               Hermanson and Christensen, 1991). However, if mixing is an
               important process, the peak may be broadened or obscured

               (Christensen and Klein, 1991).



               Porosity

               Porosity is the ratio of the volume of water over the total

               volume in a given sample. It can give valuable information
               about compaction and the type of sediment.     A high porosity
               value is related to silty material, while a low porosity value

               corresponds to more sandy material.         Porosity is also
               important for determining sedimentation rates and ages of the
               sediments from Pb-210 data (Robbins and Edgington, 1975;
               Christensen, 1982).   A steady sedimentation rate, which is

               caused by a constant rate of deposition, should produce a

               smooth profile in the porosity data, without discontinuities
               or interruptions (Harley, 1988). Irregularities can be caused
               by disruptions in sedimentation, such as dredging or a change
               in flood control practices, or a significant change in the
               size or composition of the sediment over time (Edgington and

               Robbins, 1976; Schwetz, 1982). Because the Milwaukee Harbor

               estuary is dredged regularly for commercial purposes (Fig. 3),

               smooth profiles should be rare.









                                                                                                                                               9










                                                        RECOMMENDED DREDGING AND DREDGED MATERIALS
                                                   DISPOSAL ELEMENT FOR THE MILWAUKEE HARBOR ESTUARY
                                                                                                                  I [NORTH
                                                                                                                    AVENUE
                                                                                                                    DAM

                                                                                                                        e       _ - %4C KINLEY
                                                                                                                                     MARINA

                                                    JUNEAU         AVE





                                                 WISCONSIN- -- AV,-

                                                           ON-94                    IN-r94        :4

                                                 MENOAACWEE RIVER


                                   FALK                                                                                                      -A Jl.'E
                               CORPORATION           SO. ArEAA0M0A0CC CAMAL
                                   DA14                                                                                                     MICHIGAN


                                                 SUAYW44014 CANAL


                                                 NATIONAL


                                                                                                                                    0 T VR


                                                  GREENFIELD        AVE.


                                      LEGEND

                                      NREA FOR VROC14 DREDC" 15 TWE RESPOW.61UTY
                                      (W TK rORT OF OULWAUKEE *AD rRIVATE
                                      fw4A" rROrERTY OWNERS

                               AREA FOR Wt*CH DREDGr4G ts THE
                               RESPOMSBUTY OF THE U.S. ARMY CORPS
                               Of E"GINEERS (DEPTH IN FEET SMOW
                               ESTABLISHM LOW WATER DATLW)


                                      a FEET           20 FEET


                                      27 FEET          30 FEET


                               COW94ED DISPOSAL FACIJTY

                                      exIST04

                               S0"rCc:SEwRpc. 1987c
                                                       Fig. 3        Mil'viaukee Harbor Estuary










                                                                           10


              Loss on Ignition and Total Organic carbon

              Loss on ignition and total organic carbon are both measure-

              ments of the bulk organic carbon content in the sediment. LOI

              is a simple but fairly crude measurement of organic carbon

              because when the sample is ignited at 5500C, organic carbon

              and other volatile compounds like hydrogen and nitrogen are
              driven off as well.   Therefore, LOI is more specifically a

              measurement of total organic matter (Davis, et al., 1984).

              Nevertheless, the precision and accuracy of this method has

              been shown to be comparable to other methods (Dean, 1974).
              TOC is a more accurate measure of organic carbon because it
              differentiates between carbon, nitrogen and hydrogen.

              However, it is a tedious and costly method. Information about

              the amount of organic carbon in the sediment is important

              because there is often a correlation between TOC    and toxic

              organic contaminants. Where there is a high toxic organic

              content, one should expect to find a high TOC content.

              Therefore, TOC can be used as an indicator for potential toxic

              organic contamination.



              History of the Milwaukee Harbor Estuary

              The Milwaukee Harbor estuary has recently received much atten-
              tion (Southeastern Wisconsin Regional Planning Commission,

              1987a) . This report describes the historical growth patterns

              of the area and contains a significant database about

              sedimentation patterns, dredging, biological and chemical
              measurements, and various.other environmental parameters as        40









             well as an action plan to reduce and remediate the pollution

             in the system.



             The first permanent European settlement in the area was

             established in 1795 east of the Milwaukee River, north of what

             is now downtown Milwaukee. The rural areas of the watershe      d

             experienced major growth between 1840 and 1860. In 1857, the

             first port development was completed, and the Menomonee Canal

             system was finished in 1874.     Rapid industrial development

             continued after the completion in 1855 of a railroad connect-

             ing the cities of Chicago and Milwaukee. However, with this

             industrial development, increased pollution of the watershed

             area occurred as well.




             The sources of sediment and pollution in the Milwaukee Harbor

             estuary include industrial discharges,         combined sewer

             overflows (CSO's), atmospheric deposition, runoff from

             agricultural fields, feed lots, and urban areas, and effluent

             discharged into the Outer Harbor from the Jones Island

             Wastewater Treatment Plant. As a result of these and various

             other point and nonpoint sources, sedimentation rates in the

             system are fairly high. Therefore, dredging must be carried

             out to maintain navigational activity (Fig. 3).         However,

             future sedimentation rates are expected to be reduced because

             the input of sediments into the system is expected to drop.

             For example, the number of CSO's will fall dramatically with

             the completion of the deep tunnel project in 1996, and land









                                                                           12


              management and sediment control measures will be improved over

              the years. Nevertheless, dredging may still continue at its

              present rate to clean up the pollutants as much as to maintain

              navigable waters.








                                                                               13


                                 II. MATERIALS AND METHODS



              Samplina Sites and Methods

              The Milwaukee Harbor estuary is defined as the confluence of
              the Kinnickinnic, the Menomonee, and the Milwaukee Rivers
              within the urban area, and the Inner and Outer Milwaukee

              Harbor (Fig. 3).     The estuary area of the three rivers is
              defined by the Kinnickinnic River north of Chase Avenue, the
              Menomonee River east of the Falk Corporation dam at 29th
              Street, and the Milwaukee River downstream of the North Avenue

              dam.



              The estuary was sampled in late September and early October
              1990 from the R/V Pelagos., and in October 1991 from the R/V
              Pelagos and R/V Neeskay. Maps of the sampling locations are
              found in Figs. 4-5. In 1990, three types of sampling devices
              were used, a Ponar grab sampler (GR-), a box corer (C-) with
              inside dimensions of 29.8 cm by 30.5 cm, and a gravity corer
              (GC-) with a polybutyrate plastic liner (inside diameter = 6.7
              cm).   The grab samples were immediately transferred to
              preweighed glass bottles.       The box cores were sectioned
              aboard the ship immediately after core recovery and
              transferred into preweighed glass bottles. The gravity cores
              were extruded on shore with an extrusion device and
              transferred into preweighed glass bottles. The samples were
              stored in the Great Lakes Research Facility refrigerator room.









                                                                                                          14






                                                  Confluence of       CC-16
                                                  Milwaukee River
                                                  and Lincoln Creek






                                               MILWAUKEE
                                                                           CC-11
                                                HARBOR           43
                                                               42


                                                        4L     C-L

                                                                                 29
                                                      40



                                                                                za

                                                        39                     27
                                                                                 A
                           3*1      33               35                    C-12
                                         C-5  34               -3             4
                                                                               A
                     49                                        -47            26
                                           3
                                                  7 3        a
                                       47  48              C-13    C-9          25          MILWAUKEE
                                                                         9                      BAY
                                   C-3                       2          'VIC-10
                                                                   it        A24
                                                               1  C-8 At 2      A
                                                                        A,      23
                                                             3            4A,5  AZI
                                                                         .416       A
                                                                            AL 7   22
                                                        CC-15                    20A
                                           C-4     4                             k8
                                                    45b


                                                                               19
                                                    45a





                                                         A   grab sample (cR)
                                                         It  box core (C)
                                                         a   gravicy core (CC)
                                                             9cavicY Core Cransecc
                                                             (CC-r)




                                          Fi g.  4    1990   Sampling Stations









                                                                                 15













                                  MILWAUKEE
                                    HARBOR






                                             VC-2





                                 VC-34/35
                                              VC-3
                                               VC-4        VC-1 2
                             vc- 6      VC-6                       MILWAUKEE
                                                                       BAY
                                                         VC-9




                                          VC-8






                                           VC-7















                               Fig. 5  1991 Sampling Stations









                                                                             16


               Comments on visual observations of the samples can be f ound
               under a separate cover (Christensen, et al., 1990).



               In 1991, deeper cores were desired so a vibra corer was to be
               employed, however, due to technical difficulties, it was
               unusable.   Therefore, cores (VC-) were obtained by a long
               gravity corer and a push core (aluminum tubing, inside
               diameter = 7.3 cm) .   A long gravity core was obtained by
               placing about 150 lbs. on top of a long gravity core liner and
               allowing the coring device to free-fall from the water
               surface. A push core was obtained by manually pushing the
               aluminum tubing into the sediment after the ship had been
               secured. Both types of cores were extruded on shore with an
               extrusion device and transferred into preweighed polyethylene
               containers.   The' samples were stored in the Great Lakes

               Research Facility refrigerator room.      Comments on visual
               observations of the samples can be found in a separate report
               (Gin and Christensen, 1991).



               Porosity

               In the laboratory, a portion of each sample was weighed and
               dried in a convection oven for approximately 3 days at'6010C to

               a constant weight. The porosity (fl of these sediments was
               determined by the following calculation under the assumption
               that the density of the sediment was 2.45 g/CM3:









                                                                              17


                   2. 4 5wi                                                  (2)
                  1+1.45vi



                   where wi =
                                 Pwt +       PS


                          wi = weight fraction of water
                          PW = density of water     I g/cm3
                          PS = density of solids     2.45 g/cm 3

                                               (Robbins and Edgington, 1975;

                                                    Christensen, 1982)



             The samples were ground with    mortar and pestle and stored in
             glass vials for further analyses.



             Loss On ignition (LOI)

             A 0. 25 g sample of dried sediment was measured in a pre-
             weighed crucible, heated at 5500C for 15 minutes and allowed

             to cool (Davis et al., 1984). When the crucibles reached room

             temperature, they were reweighed. organic carbon content was

             determined by:


                              pre oven wt - post oven wt
                     LOI                                      x 100           (3)
                              pre oven wt - crucible wt





             Total Organic Carbon (TOC)

             Total organic carbon content was determined by a Carlo Erba
             Strumentazione Elemental Analyzer - Model 1106 (Carlo Erba,










                                                                             18


               1981), which is used to analyze dried sediment samples for
               carbon, nitrogen and hydrogen. A 1.0 to 1.5 rag sample was
               weighed on a Cahn 29 automatic electrobalance into tin

               capsules supplied by Carlo Erba instruments. The samples were
               acidified with 25 gl of 3N H3PO4 to drive off any inorganic
               carbon, such as CaC041    in the form of C02 (Backhus and
               Gschwend, 1990).     The samples were allowed to air-dry
               overnight and then reshaped to allow proper functioning of the

               autosampler.



               Before ana lyzing the acidified samples, the autosampler must
               be stable. This check was accomplished by running air samples
               until a , constant value was obtained.      once the machine
               stabilized, two blank samples, two standards (0.25 mg
               acetanilide) and two acid blanks were run. If these remained

               consistent, the acidified samples were run. A standard was

               run after every 10 samples to ensure the stability of the
               instrument. After all the samples had been run, a final blank

               was run to shut the autosampler off.



               A Hewlett-Packard 3390A Integrator printed out the information
               obtained from the autosampler, which analyzed the oxidized
               samples.  A typical printout can be f ound in Fig. 6.         A
               chromatogram. was produced with peaks corresponding to each of
               the different elements.   The three peaks correspond to the
               nitrogen, carbon and hydrogen components of the sample,
               respectively. The retention time for the element as well as         0








                                                                                                               19















                                                       Nitrogen


                                                                                            3-2.   Carbon











                                                                                              Hydrogen




                                               RUH      162                DEC/@7/'-QO 18:34:05
                                                  (--%Vl@
                                               AREA%
                                                   RT           AREA TYPE      ARMT          AREA%
                                                  2.e9         49937     88    O-ZliG        (3-810
                                                  3.23       1105466      88   P3.24B       12.92-6
                                                  8.15       5561690  1 PH     0.903        31.264


                                               TOTAL   AREA=     6166300
                                               MUL FACTOR=    1.0088E480


                                               Fig. 6       A Typical Chromatogram










                                                                        20

              its corresponding area follow the chromatogram.        This
              information is used to determine TOC content by the f ollowing

              calculations:



                        (Au  Aab) x . k
               TOC =                                                   (4)
                            U mg


                  where Au   area of sample

                        Aab   area of acid blank

                        u. mg = sample weight

                             (mg std)(% C of std)
                        k =
                                (Astd  Abl)


                            where Astd  area of standard

                                  AbI  area of blank




             Pb-210



             Secular equilibrium was assumed between Pb-210 and its
             granddaughter product, Po-210. To ensure this equilibrium,
             there was at least a two month waiting period between sampling
             and plating.   To measure Pb-210 activity, the following

             procedure was followed:


             DIGESTION
             A 0.5 g dried sediment sample, 1.0 ml of Po-208 standard (th
             = 2.898 years, 9.75 dpm/g, 11/20/89) and -50 ml of 50% HC1
             were added to a 125 ml Erlenmeyer flask. About 1 ml 30% H202
             was added to the flask, swirled and placed on a -950C hot









                                                                           21


             plate. At thirty minute intervals, the flasks were removed

             from the heat, allowed to cool briefly and another -1 ml 30%

             H202 added.   If there was excessive foaming, a drop of I-

             octanol was added. The flasks were returned to the hot plate

             and the process of heating for 30 minutes, cooling and adding

             1 ml H202 was continued until a total of 5 ml H202 was added.
             After the final spike of H202, the flasks were left on the hot

             plate until 4 hours total heating time had elapsed.

             Throughout the digestion process, the total volume in the

             flasks was maintained at -50 ml by adding HC1 as necessary.

             Finally, the f lasks were removed from the heat, allowed to

             cool, covered with a watch glass and allowed to stand

             overnight.

             PREPARATION OF COPPER PLATE

             Copper plates of 2.2 cm diameter were labeled on the convex

             side and sprayed with polyurbthane. The other side was cleaned

             with abrasive cleaner and copper polish.

             FILTERING AND VOLUME REDUCTION

             The sample and rinse was filtered through Whatman 142 filter

             paper into a clean, labeled .125 ml Erlenmeyer flask.       Two

             boiling chips were added to the rinse and flask, and the flask

             was placed onto a -950C hot plate, where the volume was

             reduced to -10 ml. After the volume was reduced, dist    illed/

             deionized water was added to return the volume to -50 ml.

             pH ADJUSTMENT

             The pH of the solution was adjusted to between 0.45 and 0.55,

             by adding HC1 or NaOH as necessary. About 0.1 g ascorbic acid










                                                                           22


              was added, and the solution was swirled until it completely
              dissolved. . The solution was poured into a labeled 250 ml
              Nalgene bottle with a labeled copper plate in it, concave
              (without polyurethane) side up, and the bottle was capped
              tightly.

              PLATING

              The bottles were placed in a 900C oven overnight, and the Po-
              208 and Po-210 was spontaneously deposited onto the copper
              disks (MacKenzie and Scott, 1979).    After the bottles were
              removed from the oven, they were turned over so the copper
              plate would "stick" to the cap by surface tension.         The
              bottles were returned to the upright position, uncapped, and
              the plates were removed by slapping the cap against the table
              top. After the plates were removed, they were rinsed with
              distilled/deionized water and ethanol, allowed to air dry and
              then placed into a labelled bag. After the plating solution
              had cooled, it was discarded with copious amounts of water.

              COUNTING

              The copper plates were placed into an EG&G Ortec 576 Alpha
              Spectrometer consisting of a dual alpha surface barrier
              detector and counted for a minimum of 70,000 seconds.      The
              spectrophotometer was connected to an IBM personal computer AT
              and used EG&G Maestroy" Adcamo 100 Multichannel Analyzer

              software.




              The surface barrier detector detects alpha emissions from Po-
              208 and Po-210 decay. These emissions are sorted and counted        40









                                                                         23

             according to energy in the alpha spectrometer and are plotted
             by number of emissions vs. channel number or alpha energy.
             The number of emissions per unit time is directly related to
             the disintegration rate of the sample. Pb-210 (dpm/g) can be
             calculated from the following equation:
              Pb-210(dpmlg) = Po-210area- . Po-208dpm initial x C.f. (5)
                            Po-208area    sample weight Fg-)



                  where Po-208 (dpm initial)= 9.75 x e-,Xt:

                          for Po-208 = 0.2392 yr-1

                        t = count date - reference date


                        correction factor (c. f . ) =e;L t:

                           where I for Po-210 = 1.833 yr-1

                                  t = count date - plate date



            Replicates samples were run, and the results indicate 95%.

            precision.



            The uncertainty of the Pb-210 activity levels was calculated
            by the Poisson method assuming that the background supported
            counts was well know from multiple measurements (Friedlander

            et al., 1949).



                Na   Nb


                 where Na = Po-210 counts

                       Nb = background supported counts









                                                                               24


               However,  when the excess Pb-210 is much greater than the

               supported Pb-210 (1990 samples), the equation becomes:

                6S = 1                                                      (7)
                        = s
                      7N




                    where s = excess.Pb-210 (dpm/g)

                           N = Po-210 counts


               CALCULATION OF SEDIMENTATION RATES

               The excess Pb-210 activity was plotted vs. cumulative mass and

               the slope (a), uncertainty (8a) and y-intercept (b) were

               calculated by a weighted linear regression as follows

               (Topping, 1965):


                     n     n           n        n

                        r
                        Arl. (Wimi-vi) - (Wim_i)  (WiYD
                a
                                                 2
                           n    n
                              Wi   Wim@)-[ Wimi


                    where  a = slope (cm2/g)

                           wi = Pb-210 (dpm/g)
                           mi = cumulative mass (g/cm2

                           yj = ln(excess Pb-210) (dpm/g)

                           n =  number of data points








                                                                         25





         



                  where eb = calculated Pb-210 activity at the sediment-

                             water interface




            The mass sedimentation rate (r) was calculated from the ratio

            of I and the slope in the following manner:


            
                 



                  where r = mass sedimentation rate (g/cm2/yr)
                         I for Pb-210 = 0.03114 yr-1



            The slope (a), 6a, b, and r were calculated using a computer

            program which can be found in Appendix C.



            Velocity (v) was calculated by:
 








                                                                        26



               V                                                     (12)
                    P



                     where v = velocity (cm/yr)

                           p = average bulk density over the interval of

                                 interest calculated by:

                           P   PS(i - 0)
                              where p. = 2.45 g/cm3 (solids density)

                                       = average porosity

                           f=          length of core
                             length of tube pushed into sedTm-ent



             Information about compaction (f) 'was only known for the push
             cores. Otherwise, f was assumed equal to 1.0.



             Cs-137



             Pellets were formed by mixing -40 g dry sediment with PVA
             solution (1 ml per 10 g sediment) as a binding agent (Klump,
             personal communication).   The sediment and PVA were poured
             into a hollow cylinder (inside diameter = 53 mm) and placed
             under a bench-scale hand-operated compressor. The sample was
             compressed to -1500 Psi for -1 minute to form a pellet.    A
             typical pellet was about 1.3 cm thick. The pellet was dried
             in a 600C oven overnight, allowed to cool and reweighed.









                                                                         27


            The pellets were inserted into a plastic bag bef ore being

            placed on top of the EG&G Ortec HPGE Gem series p-type coaxial

            detector to prevent contamination of the Ge (Li) detector.

            They were counted a minimum of 80, 000 seconds.      The total

            counts at a particular energy was determined by the EG&G
            Maestro'm software.



            Cs-137  (dpm/g) was calculated by the following equations:

             CS-137=        Cs-137area x 60 (sec/min)       X C.f. (13)
                     il x L.T. x intensity x sample weight (g)



                 where L.T = live time (sec), and
                            0.0004x2 - 0.0038x + 0.0137

                            x = height of pellet (cm)

                        intensity = 0.946                       (Yan, 1991)


                        correction factor (c. f . ) =e

                            where I for Cs-137 = 0.02297 yr-I

                                  t- count date - sampling date



            The uncertainty was calculated by the following equation:

             6,= V@@Nb+Nns                                           (14)
                   Nn




                 where s    Cs-137 activity (dpm/g)

                        Nb   background counts

                        Nn   net counts









                                                                            28


                               .III. RESULTS AND DISCUSSION

               Final Values of LOI, TOC. Pb-210 and Cs-137

               Tables Al - A30 of Appendix A are the tables for each core.
               Each table includes the core name, location, water depth, type
               of core, core length, date sampled, and porosity, %LOI, %TOC.-
               mass, cumulative mass, bulk density, Pb-210, excess Pb-210,
               Pb-210 counts, and Cs-137 (where applicable) for each depth
               interval. Appendix B contains graphical representations of
               depth vs. porosity, and depth vs. %LOI & %TOC for each 1990

               and 1991 sampling site.








                                                                           29



             Sedimentation Patterns

             Tables 1 - 2 are summary tables of the mass sedimentation rate

             and sedimentation rate for each core, where applicable. Where

             there was a positive slope and a negative mass sedimentation

             rate, it was assumed that an apparent high sedimentation rate

             existed.   Table 3 compares the results of this research to

             SEWRPC (1987b) results.     In general, the results compare

             favorably. Fi gure 7 is a map of sedimentation rates (cm/yr).

             The rates from the 1991 samples were used for this map and in

             places where there was no 1991 sample, the 1990 values were

             used. Appendix B contains graphical representations of depth

             vs. excess Pb-210 activity and excess Pb-210 activity vs.

             cumulative mass for each 1990 and 1991 core, when appropriate.



             Most of the Pb-210 activit y profiles were-not smooth. There

             were several possible explanations for this occurrence.

             First, the system is dredged regularly for navigational

             purposes. Second, because the water is not very deep in this

             system, the sediments may be resuspended as a result of minor

             storms or navigational traffic. Finally, the type of sediment

             often changed with depth so the amount of Pb-210 sorbed to the

             sediment would vary according to the sediment composition.



             Each core was represented by two graphs, depth vs. excess Pb-

             210 activity and excess Pb-210 activity vs. cumulative mass

             (see for example Fig. B2).         Sedimentation rates were

             calculated from the excess Pb-210 activity vs. cumulative mass









                                                                             30


              TABLE 1: SLOPE, SEDIMENTATION RATE & VELOCITY FOR 1990 CORES
                                     2/g)                 2
                  CORE      slope tcm            r (g/cm /yr)       v (cm/yr)

              C-1          0.0320 ï¿½ 0.0206          -0.972
                  all points                  -0.591 to -2.732

                  excluding 0.0260 ï¿½ 0.0120         -1.196
                  outlying points             -0.819 to -2.215


              C-2         -0.0169 + 0.0131          1.838               3.7
                                               1.036 to 8.140      2.1 to 16.3


              C-3          0.0119 ï¿½ 0.0121          -2.612
                                                  r > 220.235


              C-4         -0.0166 ï¿½ 0.0109          1.876              4.7
                                               1.133 to 5.464      2.9 to 13.8


              C-5          0.0189 ï¿½ 0.0076          -1.648
                                              -1.177 to -2.747


              C-6          0.0161 ï¿½ 0.0077          -1.936
                                              -1.309 to -3.711


              C-7          0.0154 ï¿½ 0.0177          -2.020
                                                 r > 13.558


              C-8          0.0086 ï¿½ 0.0123          -3.614
                                                 r  > 8.502


              C-9         -0.0361 ï¿½ 0.0119          0.862              1.9
                                              0.648 to 1.288        1. 5 to 2.9


              C-10        -0.2694 ï¿½ 0.0533          0.116              0.18
                upper 11  cm                  0.096 to 0.144     0.14 to 0.21


              C-12        -0.2911 ï¿½ 0.0647          0.107              0.18
                upper 11  cm                  0.088 to 0.138     0.15 to 0.23

                          -0.0671 ï¿½ 0.0230          0.464              0.75
                all points                    0.346 to 0.706       0. 56 to 1. 15


              C-13        -0.0102 ï¿½ 0.0112          3.042              7.7
                                                 r > 1.46            v > 3.7

                apparent high sedimentation rate implied









                                                                                         31



                TABLE 2: SLOPE,     SEDIMENTATION RATE & VELOCITY FOR         1991 CORES
                  CORE          slope (cm2/g)            r (ci/cm2/yr)         v (cm/yr)

                VC-2          -0.0131 ï¿½ 0.0037               2.386                 8.9
                                                      1.856 to 3.340           7. 0 to 12.5


                VC-3           0.0053 ï¿½ 0.0026              -5.886
                                                     -3.941 to -11.619


                VC-4           undeterminable


                VC-6          -0.0436 ï¿½ 0.0147               0.714                 1.3
                                                      0.534 to 1.076           0.8 to 1.7


                VC-7          -0.0178 ï¿½ 0.0042               1.749                 2.5
                                                      1.417 to 2.283           2.0 to 3.2


                VC-8          -0.0049 ï¿½ 0.0026               6.346                 10.4
                                                      4.127 to 13.73           6.7 to 22.4


                VC-9          -0.0194 ï¿½ 0.0130               1.609                 2.4
                  all points                          0.962 to 4.921           1.4 to 7.3

                              -0.2227 ï¿½ 0.0364               0.140                 0.23
                  first 21 cm                         0.120 to 0.167           0.2 to 0.3


                              -0.0182      0.0169            1.706                 2.4
                  next 49 cm                          0.850 to 23.46           1.2 to 33.2


                  from Cs-137                                                  1.8 to 1.9


                VC-12         -0.0469      0.0086            0.664                 1.0
                                                      0.561 to 0.814           0.9 to 1.3



                VC-34/35      -0.0127      0.0034            2.461                 5.4
                  all points                          1.942 to 3.358           4.2 to 7.3

                            -0.0171 ï¿½ 0.0041                 1.824                 4.7
                  first 63 cm                         1.471 to 2.402           3.8 to 6.2

                            -0.0115 ï¿½ 0.0112                 2.710                 5.2
                  last 72 cm                         1.370 to 124.126          2.6 to 238


                VC-36       -0.0134 ï¿½ 0.0026                 2.316                 4.9
                                                      1.943 to 2.867           4.1 to 6.1

                  apparent high sedimentation rate implied









                                                                                     32


                                TABLE 3: COMPARISON OF V TO SEWRPC
                 CORE               v (cm/yr)                  SEWRPC+ (cm/yr)
                 C-1                    high*                        < 12.7
                 C-2              3.7   (2.1 - 16.3)                 < 12.7
                 C-3                    high*                        < 12.7
                 C-4              4.7   (2.9 - 13.8)                 < 12.7
                 C-5                    high*                    12.7    25.4
                 C-6                    high                         < 12.7
                 C-7                    high*                        < 25.4
                 C-8                    high*                        < 12.7
                 C-9              1.9   (1.5 - 2.9)              12.7    25.4
                 C-10             0.17 (0.14   - 0.21)                NA
                 C-12             0.75 (0.6 - 1.2)                    NA
                                     all points
                 C-13             7.7 (> 3.7)                    12.7    25.4


                 VC-2             8.9 (7.0 - 12.5)                   < 12.7
                 VC-3                   high*                        < 12.7
                 VC-6             1.3 (0.8 -   1.7)                  <  12.7
                 VC-7             2.5 (2.0 -   3.2)                  <  12.7
                 VC-8             10.4 (6.7 - 22.4)                  <  12.7
                 VC-9             2.4 (1.4 - 7.3)                12.7    25.4
                                    all points
                 VC-12            1.0 (0.8 - 1.3)                    NA
                 VC-34/35         5.4 (4.2 - 7.3)                12.7 - 25.4
                                    all points
                 VC-36            4.9 (4.1 - 6.1)                    <12.7


                 +SEWRPC, 1987b
                 *apparent high sedimentation rate
                 NA = no information available










                                                                                 33



                                Confluence o
                                            f
                                Milwaukee River
                                and Lincoln Creek




                                 MILWAUKEE
                                   HARBOR-               SLOW


                                               -00













                                            :ScP
                                        L3

                                                                 MILWAUKEE
                                                                     BAY




                                                 10.4





                                          2.5





                                          0 - 2.5 cmlyr
                                        2.6 - 5.0 cmlyr
                                        5.1 +    cmlyr




                        Fig. 7 Map of Sedimentation Rates










                                                                               34

               graphs when appropriate (C-2, 4, 9, 10, 12 & 13 and VC-2, 6,
               7, 8, 9,                                                            40
                          10, 12, 34/35 & 36).    The graphs for these cores
               showed a  negative slope, which implied that the age of* the
               sediment  increased with depth.    A negative slope allowed a
               sedimentation rate (r) to be calculated.         This r -value
               (g/cM 2/yr) can be converted to a velocity (cm/yr) which can be
               compared to existing literature values of sedimentation rates

               at these areas.



               Where sedimentation rates could not be calculated because of
               a zero or positive slope, it was assumed that a high
               sedimentation rate or much mixing existed at these sites.
               Deeper cores would be necessary to gain more specific
               Information of the rates at these sites.      Furthermore, the
               inability to calculate a rate under these conditions showed a

               limitation of the Pb-210 method.



               Another possible method of representing the cores is to
               normalize the Pb-210 values. This would be accomplished by
               dividing the excess Pb-210 value by the TOC value and plotting
               it versus cumulative mass. This approach would be useful to
               see how Pb-210 is related to TOC. However, this method was

               not chosen for this research.



               Excess Pb-210 values were calculated by assuming that the
               values for Pb-210 at > 5 cm. at GC-11 and 15 were supported
               levels.  The average of these nine values is 2.92 dpm/g.








                                                                             35


             Also, it was assumed that this value was constant throughout

             the system. Therefore, excess Pb-210 was equal to total Pb-

             210 (dpm/g) - 2.92 dpm/g. When it was obvious that within a

             given core, the supported Pb-210 levels were <2.92 dpm/g (VC-

             6, 8, 9, 12 & 36), an average of the smallest total Pb-210

             values was assumed equal to the supported Pb-210 level. The

             supported Pb-210 levels varied because the composition of the

             sediment varied.




             1990 Sampling Stations

             In the Milwaukee River, the results showed that at C-1 and C-3

             there was an apparent high sedimentation rate or much mixing

             because there was recent       material throughout the core.

             However, at C-2, the sedimentation rate was not as high and

             could be calculated because the Pb-210 activities decreased

             with depth. This trend implied that the material deeper in.

             the core was older than the material near the top.

             Sedimentation rates were not calculated at GC-11 and 16

             because the Pb-210 activities dropped to the supported levels

             by the second layer. This trend implied that there was a slow

             sedimentation rate at these two areas, and the material at

             greater than 5 cm was quite old. The Pb-210 activity profiles

             for the transect (GCT-) indicate that there was a fairly even

             distribution of Pb-210 activity throughout the depth of each

             core.   These profiles implied that there was a fairly high

             sedimentation rate, similar to the conclusion reached at C-3.

             Furthermore, this trend implied that the sedimentation









                                                                             36


              occurred fairly uniformly across the river channel. GCT-4 had

              a slightly different profile, possibly due to a local

              disturbance such as a sand lens at 5-10 cm depth.



              In the Menomonee River, the results f rom. C-5 and 6 showed that

              there was a high sedimentation rate.          There was recent

              material throughout each core because the Pb-210 activities

              did not decrease with depth.



              At the conf luence of the Milwaukee and Menomonee Rivers (C-4),

              a sedimentation rate could be calculated.       However, at the

              bottom of this core, the Pb-210 activities tended to increase.

              This trend implied that recent material was overlaid by qlder

              material, possibly as a result of dredging or other physical

              disturbances. The Cs-137 analysis did not give any additional

              information because the core was not long enough to identify

              a Cs-137 peak. Downstream of this point (C-13), there was a

              relatively high sedimentation rate, but a rate was still

              calculated.




              In the Kinnickinnic River, C-7 & 8 and GC-15 showed a high

              sedimentation rate. The Pb-210 activities did not decrease

              with depth, so all the material was relatively recent.



              At the Harbor Entrance (C-9), a fairly slow sedimentation rate

              was calculated. There was a general decrease in Pb-210








                                                                             37


              activity with depth. Howeverl the sample was not deep enough

              to identify a Cs-137 peak.



              Near the Jones Island outfall (C-10) , there was a definite

              decrease in Pb-210 activity with depth over the first 13 cm

              but then a definite increase in activity over the remaining 10

              cm. This trend implied that the most recent material was at

              the surface and at 25 cm depth, and the oldest material was at

              9 - 13 cm. A Pb-210 profile like this one must be caused by

              some type of mixing.



              In the outer harbor (C-12), two sedimentation rates were

              calculated, one for the first 11 cm and another for the whole

              core.   The rate for the f irst 11 cm was calculated upon

              inspection of the activity profile. It seemed as if there was

              a rate over this interval which did not exist over the whole


              core.  However, the rate for the whole core was calculated

              after it was determined    from the analyses of the priority

              organics that the highest  degree of contamination occurred in

              the deepest layer (Ni, et al., 1991). Therefore, the material

              in this layer may be from the early 1960's.        CIC analysis

              indicates that this layer was deposited in approximately 1961

              (Table 5).



              1991 sampling Sites

              In the Milwaukee River, at VC-2, a sedimentation rate could be

              calculated.   This rate f ell within the range of the rate









                                                                            38


              calculated f or the 1990 sample. At VC-3, the apparent high

              sedimentation rate confirmed the conclusion of the 1990 data.

              The sedimentation rate at this point was either extremely f ast

              or mixing was very important because there was recent material

              at 105 cm depth.



              In the South Menomonee Canal at VC-36, a sedimentation rate

              was calculated. There was a sharp drop in Pb-210 activity at

              90 cm. This drop could be attributed to a change in sediment

              characteristics, such as an increase in rocky sediment, or to

              a change in f lood control practices or land use in the mid

              1950's. The change could also have been caused by dredging

              activity.    In fact, dredging by the U.S. Army Corps of

              Engineers occurred in the area throughout the 1960 Is, late

              1970's and early 1980's (USACE, 1990). The supported Pb-210

              activity level was taken to be equal to 1.62 dpm./g. At VC-6,

              a fairly slow sedimentation rate was calculated for the first

              24 cm. After this point, there was a sudden drop to supported

              Pb-210 levels.   Again, this drop could have been caused by

              dredging in the early to mid 1970's.     The supported Pb-210

              level was assumed equal to 1.48 dpm/g. The results from 1990

              showed a high sedimentation rate at this point.             This

              dif f erence could be explained by a historically Plow rate,

              followed by a sudden increase due to changes in land use, or

              a slight difference in sampling locations between the two

              years. These deep cores integrate over many centimeters,








                                                                           39



             preventing one to dif f erentiate rates over only a couple of

             centimeters.




             In the Menomonee River (VC-34/35), there was a general

             decrease in Pb-210 activity with depth. However,at depths

             greater than 54 cm, there were wide fluctuations in the Pb-210

             activity profile.    These fluctuations may be attributed to

             physical disturbance or changes in the sediment composition.

             Three sedimentation rates were calculated, one for the whole

             core, one for the first 63 cm, and one for the 72 cm. Because

             the three rates are virtually similar, the rate calculated

             over the whole core was used for comparison to SEWRPC (1987b).



             At the confluence of the Milwaukee and Menomonee Rivers (VC-

             4), neither excess Pb-210 activity nor Cs-137 activity were

             detected.    This anomaly may. be due to the fact that the

             porosity and %TOC values were quite low, implying sand or clay

             composition.    Pb-210 and Cs-137 does not sorb to either

             material very well. Recent dredging may have removed much of

             the org anic material.    Dredging by the U. S. Army Corps of

             Engineers took place in the area in 1990 (USACE, 1990).



             In the Kinnickinnic River at VC-7, one sedimentation rate was

             calculated. The 1990 results near this point indicated a high

             sedimentation rate over the first 25 cm. This anomaly could

             be explained by the f act that the sedimentation rate was

             historically slow but has increased in the last several years.








                                                                                 40

               At VC-8, there was a f airly fast rate of sedimentation. once           40
               again, the sudden drop in Pb-210 activity may be accounted by
               a change in sediment composition as reflected by a change in
               porosity or by dredging. In. f act, dredging occurred in this
               area in 1983 and 1984 (SEWRPC, 1987a)           Supported Pb-210
               levels were taken to be equal to 1.75 dpm/g. The calculated
               velocity is 10.4 cm/yr when the point at 56-64 cm is
               neglected. However, if this point is included, the velocity
               becomes 2.9 cm/yr (Fig. B49). These values compares favorably
               to previous results from the study of the Milwaukee Harbor.
               Christensen and Lo (1986) calculated a velocity of 1.89 ï¿½ 0.58
               cm/yr from Pb-210 methods and a velocity of 2.06 ï¿½ 0.30 cm/yr
               from Cs-137 methods at a point between GR-5 and GR-6 (Core
               25).   Furthermore, Lo (1982) calculated a velocity of 0.25
               cm/yr near GR-6 and a velocity of 0.10 cm/yr near GR-5. He

               was unsure as to the reason for the higher rate at Core 25,
               but concluded that the relatively higher rate at GR-6 was due
               to its physical location.       GR-6 is at the vertex of the
               triangularly shaped harbor area and deposits from all three
               rivers are likely to accumulate there. Nonetheless, it can be

               concluded that the rate at VC-8 confirms the rate calculated

               at Core 25. A slightly higher rate may be the result of the
               different positions in the 'river channel.      VC-8 was in the

               center of the channel whereas Core 25 was located in a

               slightly more secluded area.








                                                                            41


             At the Harbor Entrance (VC-9), there was a sudden drop in Pb-

             210 activity levels over the first several layers. This drop

             was also reflected in the porosity values indicating that the

             drop in Pb-210 activity may be accounted for by a change in

             sediment composition, not the age of the material.            The

             supported Pb-210 level was taken to be equal to 1.59 dpm/g.

             Three rates were calculated for this core, one for the whole

             core, one for the f irst 21 cm, and one for the next 49 cm.

             However, the one for the whole core was used for comparison

             because the one low Pb-210 activity level was considered an

             outlier. The 1991 rate   and 1990 rate were in close agreement

             which implied a fairly high confidence level. If the Pb-210

             activities were normalized to TOC,    the rate would have been

             slightly higher. The Cs-137 (Fig.     8) values reveal a clear

             maximum occurs at 49-56 cm, indicating that this layer

             corresponded to 1963.     The calculated velocity equaled 1.9

             cm/yr. The earliest appearance of Cs-137 occurred at 63 - 70

             cm, indicating that this layer corresponded to 1954.          The

             calculated velocity equaled 1.8 cm/yr.        These velocities
             compared"'quite favorably to the calculated velocity from Pb-

             210 (2.4 cm/yr) .   From the Pb-210 velocities, these layers

             corresponded to 1968-1971 and 1962-1965 respectively. Because

             there was fairly close agreement between the Pb-210 date and

             the Cs-137 dates, it can be concluded 'that this sampling site

             had not been disturbed by dredging.









                                                                                 42



                                             VC-9

                                         Cs-137 Activity (dpm/g)

                              0     1     2      3     4      5     6      7

                           0


                          10                    v     1.8     1.9 cm/yr


                          20




                          30 -




                          40 -
                          50'-               t
                                                                     1963
                                                                   t
                          60 -                     t
                          70 -   1954


                          80 -




                          90 -




                         100
                              Fig. 8  Depth vs. Cs-137 activity for VC-9









                                                                           43


              In the outer Harbor (VC-12), a fairly slow sedimentation rate

              was calculated.    In this area, there was a f airly smooth

              decrease in Pb-210 activities with depth. This trend implied

              a slow sedimentation rate and little mixing of the sediments.

              Occasional departures from a smooth 'prof ile could probably be

              attributed to a storm event.









                                                                           44
              CIC Results                                                        41
              Results from the CIC calculations can be found in Tables 4-6.

              CIC dates were calculated on C-7, 8, 10 & 12, GC-16, and VC-9.

              These sites were chosen because they exhibited the following

              characteristics: a high sedimentation rate with much scatter

              (C-7 & 8), a flattening out of the Pb-210 profile or increases

              in Pb-210 activity at depth (C-10 & 12) and a sharp drop to

              supported Pb-210 levels (GC-16).        CIC -dates were not

              calculated for GC-11 because the measured activity was less

              than the supported levels, and the CIC model can not handle

              that situation. CIC dates were calculated at VC-9 to check


              the Pb-210 and Cs-137 dates.




              The CIC dates from VC-9 showed fairly good agreement to the

              Pb-210 and Cs-137 dates for the 49-56 cm layer but was vastly

              different at 63-70 cm. The Pb-210 at the 63-70 cm layer was

              close to -the supported level so the CIC model fails. However,

              the agreement at the 49-56 cm layer was an added measure of

              confidence to the age of this layer.




                                     b=66.0     MNW.W       WIMOM      -.6       i.          WON.."











                               C-7                                                                                                C-8
                                              excess                        approximate                                                        excess                          approximate
                              Depth           Pb-210          age              year of                                            Depth       Pb-210            age               year of
                              (cm)            (dpm/g)         year).         deposition                                           (cm)        (d2m@g)                           deposition
                               0-1            7.61            0.0                1990                                               -1          5.54            0.0                 1990
                               1-2            4.37            15.2               1975                                             1-2           6.87            -6.9                1990*
                               2-3            3.27            24.5               1965                                             2-3           7.00            -7.5                1990*
                               3-4            4.32            15.5               1974                                             3-4           6.44            -4.8                1990*
                               4-5            4.72            12.7               1977                                             4-5           4.85            4.3                 1996
                               5-7            4.85            11.8               1978                                             5.7           4.86            4.3                 1986
                               7-9            6.47            2.5                1987                                             7-9           4.87            4.1                 1986
                              9-11            4.44            14.6               1975                                             9-11          2.58            24.5                1965
                              11-13           8.10            -4.6               1990*                                            11-13         3.93            11.0                1979
                              13-15           7.14            -0.6               1990*                                            13-15         4.59            6.1'                1984
                              15-17           4.92            11.3               1979                                             15-17         6.75            -6.3                1990*
                              17-19           4.87            11.7               1978                                             .17-19        4.56            6.3                 1984
                            Since the calculated age is less than the sampling                                                    19-21         6.80            -6.6                1990*
                           year (1990), the latter year is assumed                                                                21-23         7.68            -10.5               1990*
                                                                                                                                  23-25         6.77            -6.4                1990*
                              OC-16                                                                                           Since the calculated age is less than the sampling
                                              excess                        approximate                                       year (1990), the latter year is assumed
                              Depth           Pb-210          age              year of
                              (cm)            Pin g           year)          de2 sition
                                              4.90            0.0                1990
                              5-10            -0.67           n.d.               n.d.
                              10-15           0.13            116.2              1874
                              15-20           1.19            45.4               1945-
                              20-25           0.10            123.9              1866
                         n.d. = not defined



                                                                                              Table 4        CIC dates for C-7 & 8, & GC-16













                            C-10                                                                                      C-12
                                          excess                       approximate                                                     excess                        approx:imate
                            Depth        Pb-210            age             year of                                        Depth       Pb-210            age              year of
                            (cm)               9         (year)          de2osition                                       (cm).       (drim/9)          (year          deposition
                             0-1           5.82            0.0              1990                                           0-1          @.39            06                1990
                             1-2           5.29            3.1              1987                                           1-2          5.92            -3.2              1990*
                             2-3           4.53            8.0              1982                                           2-3          5.05            1.9               1988
                             3-4           4.17            10.7             1979                                           3-4          3.99            9.5               1981
                             4-5           1.50            43.7             1946                                           4-5          2.79            20.9              1969
                             5-7           1.14            52.4             1938                                           5-7          0.85            59.2              1931
                             7-9           1.35            47.0             1943                                           7-9          1.80            35.1              1955
                            9-11           0.97            57.6             1932                                          9-11          1.10            50.7              1939
                            11-13          1.09            53.8             1936                                          11-13         2.01            31.4              1959
                            13-15          2.44            27.9             1962                                          13-15         1.62            38.5              1952
                            15-17          1.83            37.1             1953                                          15-17         1.70            36.9              1953
                            17-19          3.07            20.5             1969                                          17-19         1.59            39.1              1951
                            19-21          3.83            13.4             1977                                          19-21         2.24            28.0              1962
                            21-23          4.88            5.7              1984                                          21-23         1.96            32.2              1958
                                                                                                                          23-25         2.20            28.6              1961
                                                                                                                       Since the calculated age is less than the sampling
                                                                                                                       year (1990), the latter year is assumed








                                                                                         Table 5       CIC dates for C-10 & 12





                                                                                                                                                                                                 a%



                   AdIk
                                   6vowd kaftw WAN.,











                             VC-9
                                            excess                       approximate
                             Depth          Pb-210          age              year of                                                                       Pb-210
                            __(cm)          (dpm/g)                       depos t on                                         Depth            v              age           approx year
                               0-7          8.23            0.0                199                                           @cm)          (cm/yr)          (year)         of deposition
                             7-14           4.58            18.9               1972                                          49-56            2.4            21.9              1969
                             14-21          1.16            63.0               1928                                          63-70            2.4            27.7              1963
                             21-28          3.31            29.3               1962
                             28-35          4.17            21.9               1969                                                                        Cs-137
                             35-42          5.88            10.9               1980                                          Depth            v              age           approx year
                             42-49          2.91            33.4               1958                                          (cm)          (CM/yr)       Ayear)            of depositi n
                             49-56          3.27            29.8               1961                                          49-56            1.9            28                1963
                             56-63          2.50            38.3               1953                                          63-70            1.8            37                1954
                             63-70          0.60            83.9               1907
                             70-77          0.02            196.5              1795                                                                          CIC
                             77-84          0.00            n.d.               n.d.                                          Depth            v              age           approx year
                             94-91          -0.04           n.d.               n.d.                                          (cm)          (cm/yr)          (year)         of deposition
                             91-98          -0.04           n.d.               n.d.                                          V39              1.8            30                1961
                             98-105         -0.54           n.d.               n.d                                           63-70            0.8            84                1907
                        n.d. = not defined






                                                                      Table 6               CIC dates and comparison to Pb-210 & Cs-137 for VC-9










                                                                            48


              %TOC Maps
              Figures 9-14 are the %TOC values at different depths.        The
              .average TOC over the specified range was used for these
              figures. From these figures, it was obvious that there were
              several areas of high TOC content.     A high TOC content was
              probably associated with  a high sedimentation rate.



              Areas that had a high TOC content throughout the whole core
              length include the Menomonee River and South Menomonee Canal,
              the Milwauke e River before it merges with the Menomonee River,
              and the Kinnickinnic River near the Great Lakes Research
              Facility. This research confirmed a high sedimentation rate

              at these areas.



              These are areas of concern because dredging is required for
              navigational purposes in these areas.     Because a high TOC
              content can reflect a high contaminant content, the dredging
              spoils from these areas may require special handling. Also,
              because dredging operations may resuspend the sedimentst
              buried contaminants may become bioavailable again.










                                                                                           49




                                                          1.0
                                         Confluence of I
                                         Milwaukee River
                                         and Lincoln Creek

                                                                                      1.6


                                                                                  Fox
                                      MILWAUKEE                                   Point
                                       HARBOR



                                                -3.S r.3




                       1A                 qA                     1A
                                   A  'Up
                                             S4
                                       (010  1
                                                      CA                 MILWAUKEE
                                                                              BAY



                                                 Sc





                                                                   S



                                               4-@










                                         0 - 2.5%

                                       2.6 - 5.0%

                                       5.1 +



                            Fig. 9     %TOC at 0-10 cm depth    Grab samples, 1990









                                                                                       50


                                     Confluence of     T;16
                                     Milwaukee River
                                     and Lincoln Creek




                                    MILWAUKEE               .3.0
                                      HARBOR








                                               4.16






                                                         49
                                                 s .,j


                                                                       MILwALIKEE
                                                                            BAY


                                                            ;0







                                                5-4






                                                  0 - 2.5%

                                                2.6 - 5.0%


                                                5.1 +






                                                  J.
                                 Fig. 10 %TOC at 10-20 cm depth,  1990









                                                                  51



                          Confluence of
                          Milwaukee River
                          and Lincoln Creek




                            MILWAUKEE         3.2
                            HARBOR








                                 S-0                  MILWAUKEE
                                                         BAY





                                         S-0













                                      0 - 2.5%

                                    2.6 - 5.0%

                                    5.1 +





                              t
iv                   Fig. 11 %TOC at greater than 20 cm depth, 1990










                                                                              52













                                 MILWAUKEE
                                  HARBOR















                                                          3A
                                                                MILWAUKEE
                                                  3-S               BAY




                                                 -9








                                          3.5







                                             0 - 2.5%


                                           2.6 - 5.0%

                                           5.1 +






                             Fig. 12 %TOC at 0-30 cm depth, 1991









                                                                              53













                                MILWAUKEE
                                  HARBOR-
















                                                                MILWAUKEE
                                                                    BAY

















                                            0 -2.5%

                                          2.6 -5.0%

                                          5.1 +






                              Flg.13 %TOC at 30-60 cm depth, 1991










                                                                                    54













                                   MILWAUKEE
                                     HARBOR-
















                                                              4.0
                                                                     MILWAUKEE
                                                     3.0                 BAY




                                                    G.4













                                                 0 - 2.5%

                                               2.6.- 5.0%

                                               5.1 +






                            Fig. 14  %TOC at greater' than 60 cm depth, 1991









                                                                         55



             Correlation of TOC and LOI

             Fig. 15 (1990 sampling) and Fig. 16 (1991 sampling) are

             graphical representations of TOC vs. LOI. In general, there

             was a reasonably strong correlation between the two values.

             However, for any individual core, the relationship was quite'

             varied.




             Because of the correlation between the two values, LOI can
             probably be used as a rough estimate of total organic car@on-

             The.advantages of performing a LOI test are the following: 1)

             the test and calculations are quicker and easier to perform,

             2) the cost of instrumentation is less, and 3) the overall

             cost of the test is less. However, if a more accurate value

             of total organic carbon is desired, the TOC test should be

             performed.









                                                      56






                30-
                28-    Grab Composite
                26-    Regression Analysis
                24-
                22-        0.483 0.024
             U  20-      q = -0.11 0.90
             0-1 18-
                         r = 0.900
             4-@ 16-
             C           n = 45                 0
             Q) 14-
                                           0
                12-

             D
                10-
             -
                8
                              0
                6                      0
                           000
                4
                2
                0
                 0  2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

                             Percent LOI

                30-
                28-    1990 total Composite
                26-
                24-    Regression Analysis
                22-      a = 0.424 0.018
             U  20-      q = 0.62 0.95
                18-      r = 0.680
             4-@ 16-
                         n = 253                0
             Q) 14-
                                           0
                12-
                10-
                8 -       00
                           0
                6        0             0
                4        0
                2          0
                0
                 0 2 4   6 810 12 14 16 18 20-22 24 26 28 30

                             Percent LOI

               Fig. 15 TOC vs. LOI for Grab and 1990 Total Composites









                                                                              57


                                             1991 VC Composite







                      20 -


                      18 -         Regression Analysis
                                          0.565 ï¿½ 0-.034
                      16 -          q     -0.94 ï¿½ 1.35
                                    r    .0.646
                      14 -          n     150              0
                                                      0


                  0   12 -
                  0


                                                    0
                      10
                                                         0
                                                                  K>4
                                                      0
                                                                       -0-
                                                      0
                                                     00
                                                    CO

                       6
                                       0 0   .0-0

                       4

                                          0


                       2
                                      0


                       0
                         0    2    4   6    8   10   12   14   16  18   20


                                           Percent LOI





                         Fig. 16 TOC vs. LOI for 1991 VC Composite










                                                                            58



                                      IV. CONCLUSIONS



               Sedimentation patterns of the Milwaukee Harbor estuary have
               been successfully identified by Pb-210. The analysis of Cs-
               137 has provided additional confirmation of sedimentation

               rates at VC-9.    Furthermore, the vertical and horizontal
               distribution of %TOC in the system has been determined.



               Areas of apparent high sedimentation include the Milwaukee
               River, especially just upstream of the confluence of the
               Milwaukee and Menomonee Rivers (C-3 and VC-3), the Menomonee
               River and the South Menomonee Canal, and the Kinnickinnic
               River near the Great Lakes Research Facility. Meanwhile, the

               outer harbor is an area of low sedimentation.



               A correlation between LOI and TOC was determined (r = 0.68).
               This correlation indicated that LOI can be used as a rough
               estimate of total organic carbon. However, if a more accurate
               value of TOC is desired, the more tedious and costly TOC
               analysis must be performed.



               Sedimentation patterns of a dynamic system like the Milwaukee
               Harbor estuary are often difficult to determine. Many factors
               can disrupt normal sedimentation patterns.     These f actors
               include dredging, storms and other contributors to mixing .
               Therefore, the interpretation of Pb-210 activity profiles is
               of ten dif f icult. However, this research has conf irmed that a









                                                                         59


            general picture of sedimentation patterns can be gained      by

            TOC, Pb-210 and Cs-137 methods.



            Analysis of priority organic pollutants and Cs-137 analysis of

            other VC cores may assist in areas of uncertainty and provide

            information about mixing.    At these areas of apparent high

            sedimentation, deeper cores would be necessary to gain

            -information about sedimentation rates. Finally, further study

            of the correlation between Pb-210 and organic carbon would be

            useful.










                                                                             60



                                        V. REFERENCES



               Appleby, P.G., and Oldfield, F., 1978. The calculation of Pb-
                    210 dates assuming a constant rate of supply of
                    unsupported Pb-210 to the sediments. Catena, 5:1-8.

               Appleby, P.G., Oldfield, F., Thompson, R., and Hottunen, P.,
                    1979. Pb@-210 dating of annually laminated lake sediments
                    from Finland. Nature, 280:53-55.

               Backhus, D.A., and Gschwend, P.M., 1990. Fluorescent poly-
                    cyclic aromatic hydrocarbons as probes for studying the
                    impact of colloids on pollutant transport in groundwater.
                    Env. Sci. & Tech., 24(.0):1214-1223.

               Broecker, W.S., and Peng, T.-H., 1982. Tracers in the Sea.
                    Columbia University, Palisades, New York.

               Carlo Erba., 1981. Elemental Analyzer Mod. 1106 Instruction
                    Manual.

               Christensen, E.R.,, 1982. A model for radionuclides in
                    sediments influenced by mixing and compaction. J.
                    Geophys. Res., 87(Cl):566-572.
               Christensen, E.R., and Klein, R.J., 1991. "Unmixing" of Cs-          Alm
                    137, Pb, Zn, and Cd records in lake sediments. Environ.
                    Sci. Tech. 25(9):1627-1637.

               Christensen, E.R., and Lo, C.-K., 1986. Polychlorinated
                    Biphenyls in Dated Sediments of Milwaukee Harbour,
                    Wisconsin, USA. Environ. Pollut. (Series B), 12:217-232.
               Christensen, E.R., Taylor, R.W., Gin, M.F., 1990. Progress
                    report #1 to Milwaukee Metropolitan Sewerage District
                    (MMSD), Task Order 906.

               Davis, R.B., Hess, C.T., Norton, S.A., Hanson, D.W., Hoagland,
                    K.D., and Anderson, D.S., 1984. Cs-137 and Pb-210 dating
                    of sediments from soft water lakes in New England (USA)
                    and Scandinavia, a failure of C@;-137 dating. Chem. Geol.,
                    44:151-185.


               Dean Jr., W.E., 1974. Determination of carbonate and organic
                    matter in calcareous sediments and sedimentary rocks by
                    loss on ignition: comparison with other methods. J. Sed.
                    Pet., 44:242-248.

               Edgington, D.N., and Robbins, J.A., 1976. Records      of lead
                    deposition in Lake Michigan sediments since 1800.
                    Environ. Sci. Technol., 10:266-274.









                                                                               61



              Friedlander, G., Kennedy, J.W., and Miller, J.M., 1949.
                    Nuclear and radiochemistry, 2nd ed. Wiley & Sons, New
                    York.

              Gin,  M.F., Christensen, E.R., 1991. Progress report 11 to
                    Wisconsin Coastal Management Program (WCMP), Sampling
                    site locations and measurements of porosity, LOI and TOC,
                    P.O. #ADB00474.

              Harley, R.J., 1988. Determining historical f luxes of particle-
                    bound pollutants in Lake Michigan sediments using
                    radionuclides. Summer 1988 NSF Research Program, Center
                    for Great Lakes Research, Milwaukee, Wisconsin.

              Hermanson, M.H., Christensen, E.R., 1991. Recent sedimentation
                    in Lake Michigan. J. Great Lakes Res., 17(l):33-50.

              Koide, M., Soutar, A., and Goldberg, E.D., 1972. Marine
                    geochronology with Pb-210. Earth Planet. Sci. Lett.,
                    14:442-446.

              Koide, M., Bruland, K.W., and Goldberg, E.D., 1973. Th-
                    228/Th-232 and Pb-210 geochronologies in marine and lake
                    sediments. Geochim. Cosmochim. Acta., 37:1171-1187.

              Krishnaswami, S., Lal, D., Martin, J.M., and Meybeck, M.,
                    1971. Geochronology of lake sediments. Earth Planet. Sci.
                    Lett-., 11:407-414.

              Leland, H.V., Shukla, S.S., and Shimp, N.F., 1973. Trace
                    metals and metal-organic interactions in natural waters
                    (ed. P.C. Singer). Ann Arbor Sci., Ann Arbor, Michigan.

              Lo, C.-K., 1982. PCBs in Dated Sediment Cores from Milwaukee
                    Harbor. Master's Thesis, Department of Civil Engineering
                    and Mechanics, University of Wisconsin - Milwaukee.

              MacKenzie, A.B., and Scott, R.D., 1979. Separation of Bi-210
                    and Po-210     from aqueous solutions by spontaneous
                    adsorption on copper foils. Analyst (London), 104:1151-
                    1158.

              Ni, F., Gin, M.F., Christensen, E.R., 1991. Progress report #6
                    to MMSD, Measurements of Pb-210 and priority organics,
                    Task order 906.

              Pierson, D.H., 1971. Worldwide deposition of long-lived
                    fission products     from nuclear explosions.         Nature
                    (London), 234:79-80.

              Robbins, J.A., 1978. Geochemical and geophysical application
                    of radioactive lead. In: J.O. Nriagu (ed.) The
                    biogeochemistry of lead in the environment. Elsevier.,
                    285-393.










                                                                               62


               Robbins, J.A., and Edgington, D.N., 1975. Determination of
                     recent sedimentation rates in Lake Michigan using Pb-210
                     and Cs-137. Geochim Cosmochim. Acta., 39:285-304.

               Robbins, J-A., Edgington, D.N., and Kemp, A.L.W., 1978.
                     Comparative Pb-210, Cs-137 and pollen geochronologies of
                     sediments from Lakes Ontario and Erie. Quat. Res.
                     10:256-278.

               Schwetz, D.L., 1982. Radioisotope geochronology of sediments
                     in Green Bay, Lake Michigan. Master's Thesis, Geological
                     Science, University of Wisconsin - Milwaukee.

               Southeastern Wisconsin Regional Planning Commission, 1987a. A
                     water resources management plan for the Milwaukee Harbor
                     Estuary, Vols. I and 2, Planning Report No. 37.

               Southeastern Wisconsin Regional Planning Commission, 1987b.
                     Newsletter 27(l):22.

               Southeastern Wisconsin Regional Planning commission, 1987c.
                     Newsletter 27(5):12.

               Topping, J., 1965. Errors of observation and their treatment.
                     Chapman and Hall, Ltd., London.
               U.S.  Army Corps of Engineers, 1990. Annual report dredging
                     data.


               Yan,  L.Y., 1991. Cs-137 and supported Pb-210 in sediment cores
                     from Lake Michigan and Green Bay. Master's Thesis,
                     Department of Civil Engineering and Mechanics, University
                     of Wisconsin   Milwaukee.








                                                                       63

















                                   Appendix A

                  Summary of Porosity, LOI, TOC, Bulk Density,

                Pb-210, and Cs-137 (if applicable) Measurements
















 J
















                       CORE:                     C-1
                       LOCATION:                 43deg 03.14'N            Milwaukee River
                                                 87deg 54.40'E
                       WATER DEPTH:              3.7 m (12 ft)
                       CORE LENGTH:              19 cm,
                       DATE SAMPLED:             10/04/90


                                                                                                        bulk                      excess       Pb-210
                           Depth      Porosity       LOI          TOC      &m^2 cumulative             density      Pb-210       Pb-210          (total
                           (cm)                       %            %                     &Lcm ^ 2     R/cm ^ 3                   (d g Ln j/)  counts)
                            0-i  .2@                              4.17       0T.1 T-      0.517                       8.90         5.98          543
                            1-2         0.709        9.90         3.52       0.713        1.230         0.713         6.74         3.82          424
                            2-3         0.723        10.94        5.36       0.679        1.909         0.679         7.30         4.38          391
                            3-4         0.757        8.16         4.92       0.595        2.504         0.595         9.91         6.99          517
                            4-5         0.754        8.68         4.55       0.603        3.107         0.603         9.89         6.97          575
                            5-7         0.762        9.74         5.08       1.166        4.273         0.583         10.67        7.75          .580
                            7-9         0.773        11.26        8.74       1.112        5.385         0.556         12.12        9.20          779
                           9-11         0.768        10.00        7.06       1.137        6.522         0.568         10.32        7.40          649
                           11-13        0.771        10.05        5.78       1.122        7.644         0.561         11.01        8.09          609
                           13-15        0.777        9.62         4.66       1.093        8.737         0.546         10.67        7.15          739
                           15-17        0.759        7.47         4.73       1.181        9.918         0,590         11.04        8.12          687
                           17-19        0.727        6.54         5.26   .1  1.338        11.255        0.669         8.63         5.71          486

                                                 Table A I     Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                               for C-1















                          CORE:                       C-2
                          LOCATION:                   43deg 02.54'N              Milwaukee River
                                                      87deg 54.77'E
                          WATER DEPTH:                4.6 in (15 ft)
                          CORE LENGTH:                25 cm
                          DATESAMPLED:                10/04/90


                                                                                                                  bulk                        excess        Pb-210
                               Depth      Porosity        LOI           TOC       g/cm ^ 2      cumulative        density      Pb-210         Pb-210         (total
                               (CM)                         %            %                       R/cm ^ 2       Odin ^ 3      Ldem/g)        (dEmo          counts)
                          --   0.1                        9.37          -7T.-5T     0.402                                        7.61           4.69          744
                               1-2         0.823          9.28          4.61        0.434          0.835          0.434          7.92           5.00          878
                               2-3         0.810          8.95          4.35        0.465          1.301          0.465          8.39           5.47          94  1
                               3-4         0.809          9.09          4.45        0.468          1.769          :10.468        8.11           5.19          875
                               4-5         0.806          10.59         5.32        0.475          2.244          0.475          7.23           4.31          814
                               5-7         0.800          9.94          4.56        0.980          3.224          0.490          7.58           4.66          712
                               7-9         0.807          9.69          5.30        0.946          4.170          0.473          7.19           4.27          797
                               9-11        0.773          8.54          4.49        1.112          5.282          0.556          7.17           4.25          748
                               11-13       0.796          9.07          4.30        1.049          6.331          0.524          7.49           4.57          735
                               13-15       0.797          9.62          4.48        0.995          7.326          0.497          8.57           5.65          824
                               15-17       0.792          9.27          4.70        1.019          8.345          0.510          7.85           4.93          870
                               17-19       0.807          9.47          4.80        0.946          9.290          0.473          7.93           5.01          766
                               19-21       0.781          9.86          4.75        1.073          10.364         0.537          8.80           5.88          798
                               21-23       0.773          10.51         4.51        1.112          11.476         0.556          6.30           3.38          583
                               23-25       0.739          10.25         4.59        1.279          12.755         0.639          5.53           2.61          460



                                                      TableA2 Summary of Porosity, LOIJOC, Bulk Density and Pb-210
                                                                    for C-2
                                                                                                 @
                                                                                                                  bulk
                                                                                                                     nsi
                                                                                                          ve  @de
                                                                                                     ulati              ty
                                                                                                   cm^ 2          cm _  3































                                                                                                                                                                                                       U1















                         CORE:                       C-3
                         LOCATION:                   43deg 01.99'N             Milwaukee River
                                                     87deg 54.61'E
                         WATER DEPTH:                6.1 m (20 ft)
                         CORELENGTH:                 25 cm
                         DATE SAMPLED:               10/04/90


                                                                                                                 bulk                       excess        Pb-210
                             Depth       Porosity        LOI           TOC       g/cm    2    cumulative       density       Pb-210        Pb-210          (total
                             (CM)                          %            %                       g/cm,*'2      g/cm "' 3     (dpm/g)        (dpm/g)       counts)
                              (Y- -1                     11.05         4.61        0.360         0.360           0.360         8.77          5.85          1031
                              1-2          0.828         10.72         5.06        0.421         0.782           0.421         9.08          6.16          906
                              2-3          0.818         10.21         4.59        0.446         1.227           0.446         9.39          6.47          1071
                              3-4          0.815         11.78         5.44        0.453         1.681           0.453         9.88          6.96          10*10
                              4-5          0.809         8.25          5.07        0.468         2.149           0.468         9.25          6.33          717
                              5-7          0.794         10.36         5.40        1.009         3.158           0.505         7.68          4.76          666
                              7-9          0.798         11.09         6.51        1.039         4.197           0.519         8.23          5.31          748
                             9-11          0.773         9.04          5.30        1.112         5.309           0.556         8.11          5.19          633
                             11-13         0.767         8.61          5.60        1.142         6.451           0.571         7.13          4.21          683
                             13-15         0.758         9.88          5.15        1.186         7.637           0.593         7.78          4.86          787
                             15-17         0.803         9.07          5.11        0.965         8,602           0.483         8.50          5.58          712
                             17-19         0.802         9.82          5.38        0.970         9.572           0.485         11.65         8.73          929
                             19-21         0.806         9.91          5.82        0.951         10.523          0.475         9.53          6.61          1024
                             21-23         0.799         10.92         5.12        0.985         11.508          0.492         10.15         7.23          980
                             23-25         0.795         10.30         5.13        1.005         12.512          0.502         9.28          6.36          926


                                                     Table A 3     Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                   for C-3






                                                                                                                                                                                                   a)



                                         6@-         maw        sman"d       .6=NWA









                           CORE:                           C-4
                           LOCATION:                       43deg 01.88'N                 confluence of Milwaukee and Menomonee Rivers
                                                           87deg 54.58'E
                           WATER DEPTH:                    6.7 m (22 ft)
                           CORELENGTH:                     25 cm
                           DATE SAMPLED:                   10/02/90



                                                                                                                                bulk                           excess         Pb-210          total
                                Depth          Porosity         LOI            TOC         g/cm     2     cumulative          density         Pb-210          Pb-210            (total      Cs-137
                              -cm)                  -            %               %                              m^2         g/cm " 3        Qpm/g)         _(dpm/g)          counts)      _Ldpm/g)
                                 U-1           0.891            9.69                                          0.267           0.267           15.32            12.40            632           2.84
                                 1-2           0.863            9.54           4.36          0.336            0.603           0.336           12.45            9.53             561           ....
                                 2-3           0.860            9.97           4.31          0.343            0.946           0.343           14.55            11.63            518           ....
                                 3-4           0.839            9.18           4.20          0.394            1.340           0.394           13.17            10.25            584           ....
                                 4-5           0.834            8.96           4.85          0.407            1.747           0.407           14.12            11.20            582           ....
                                 5-7           0.833            8.54           4.92          0.818            2.565           0,409           15.17            12.25            532           3.12
                                 7-9           0.832            11.05          5.07          0.823            3.388           0.412           12.43            9.51             677           2.15
                                9-11           0.825            11.24          4.61          0.858            4.246           0.429           11.73            8.81             507           2.85
                                11-13          0.828            10.69          5.39          0.843            5.089           0.421           11.73            8.81             536           2.89
                                13-15          0.837            12.26          5.25          0.799            5.887           0.399           11.25            8.33             589           3.01
                                15-17          0.846            12.32          6.26          0.755            6.642           0.377           10.61            7.69             536           2.59
                                17-19          0.830            12.81          4.79          0.833            7.475           0.417           12.27            9.35             533           3.84
                                19-21          0.820            11.26          4.34          0.882            8.357           0.441           12.98            10.06            601           3.68
                                21-23          0.821            12.88          5.01          0.877            9.234           0.439           13.09            10.17            578           3.45
                                23-25          0.809            10.17          4.79          0.936            10.170          0.468           13.81      1     10.89     1      549      1    3.48


                                                           Table A 4       Summary of Porosity, LOI, TOC, Bulk Density, Pb-210, and Cs-137
                                                                           for C-4
                                                                                 0
                                                                                    C


                                                                                 .1                7
                                                                                 .1
                                                                           -4.376        1   0. 336
                                                                                             0. 343
                                                                                                 9
                                                                                          0374
















                        CORE:                       C-5
                        LOCATION:                   43deg 01.94'N              Menomonee River
                                                    87deg 55.68'E
                        WATER DEPTH:                7.3 m (24 ft)
                        CORE LENGTH:                25 cm
                        DATE SAMPLED:               10/02/90


                                                                                                                 bulk                         excess       Pb-210
                             Depth      Porosity         LOI           TOC       g/cm    2    cumulative       density        Pb-210         Pb-210         (total
                             (cm                          %        ---  %                       g/cm ^ 2         cm^3        (dgm@g)     _(dpm/g)          counts)
                             0-1                                       T@          0.-265---          65         0.265         18.63          15.71         1436
                             1-2          0.915          11.82         6.11        0.208          0.473          0.208         17.52          14.60         1565
                             2-3          0.879          11.35         5.64        0.296          0.769          0.296         19.22          16.30         1460
                             3-4          0.876          11.92         5.58        0.304          1.073          0.304         17.71          14.79         1570
                             4-5          0.874          12.25         6.27        0.309          1.382          0.309         19.12          16.20         1458
                             5-7          0.849          13.60         6.42        0.740          2.122          0.370         17.69          14.77         1570
                             7-9          0.850          12.94         6.06        0.735          2.857          0.368         16.87          13.95         1302
                             9-11         0.809          10.26         5.57        0.936          3.793          0.468         16.71          13.79         1272
                             11-13        0.796          10.16         5.15        1.000          4.792.         0.500         16.38          13.46         1294
                             13-15        0.771          9.32          5.15        1.122          5.914          0.561         22.75          19.83         1529
                             15-17        0.764          10.43         5.38        1.156          7.071          0.578         18.52          15.60         1625
                             17-19        0.769          10.35         4.56        1.132          8.203          0.566         21.13          18.21         1623
                             19-21        0.751          10.43         5.27        1.220          9.423          0.610         22.30          19.38         1513
                             21-23        0.757          10.16         5.20        1.191          10.613         0.595         18.68          15.76         1628
                             23-25        0.754          9.96          5.22   .1   1.205          11.819    ,    0.603         21.45          18.53         1616


                                                    Table A 5 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                   for C-5






                                                                                                                                                                                                     00















                       CORE:                    C-6
                       LOCATION-                43deg 01.92'N            Menomonee River
                                                87deg 54.86'E
                       WATER DEPTH:             7.0 m (23 ft)
                       CORE LENGTH:             19 cm
                       DATE SAMPLED:            10/02/90



                                                                                                       bulk                      excess     Pb-210
                           Depth      Porosity       LOI         TOC      91cm ^ 2 cumulative        density      Pb-210.       Pb-210        (total
                                                      %           %                     A/cm ^ 2     g/cm ^ 3    (dpm/g)       (dpm/g)       counts
                            0-1                      13-53   --T9T-         0.265        0.265     ---U.T6T- --i-47P-            11.92        O.QA
                            1-2        0.865         15.14       5.34       0.331        0.595         0.331       14.36         11.44        1196
                            2-3        0.843         12.32       5.30       0.385        0.980         0.385       14.54         11.62        1158
                            3-4        0.793         10.21       5.07       0.507        1.487         0.507       14.40         11.48        955
                            4-5        0.818         11.05       4.95       0.446        1.933         0.446       14.33         11.41        978
                            5-7        0.835         11.98       4.76       0.809        2.742         0.404       16.05         13.13        1096
                            7-9        0.833         11.57       4.81       0.818        3.560         0.409       15.23         12.31        980
                           9-11        0.833         11.33       4.99       0.818        4.378         0.409       14.07         11.15        972
                           11-13       0.823         10.54       4.69       0.867        5.245         0AU         16.02         13.10        1089
                           13-15       0.807         10.55       4.89       0.946        6.191         0.473       14.58         11.66        914
                           15-17       0.812         11.09       5.30       0.921        7.112         0.461       15.34         12.42        1057
                           17-19       0.811         11.52       5.11   1   0.926        8.038         0.463       17.28         14.36        993


                                                TableA6 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                              for C-6














                      CORE:                     C-7
                      LOCATION:                 43deg 00.49'N           Kinnickinnic River
                                                87deg 54.60'E
                      WATER DEPTH:              2.8 m (9.2 ft)
                      CORELENGTH:               19cm
                      DATE SAMPLED:             09/27/90


                                                                                                       bulk                      excess      Pb-210
                           Depth     Porosity       LOI         TOC       g/cm   2 cumulative          density     Pb-210       Pb-210         (total
                           (cm                       %            %                    01cm ^        g/cm^3        (dp!y
                                                                                               2                         @S)    (d2mffl      counts)
                           0-1                      7.58                                                            9.93          -/.U1        848
                           1-2        0.672         6.99        2.97       0.804.        1.164         0.804        7.29          4.37         641
                           2-3        0.605         8.35        3.57       0.968         2.132         0.968        6.19          3.27         547
                           3-4        0.605         7.85        3.68       0.968         3.099         0.968        7.24          4.32         609
                           4-5        0.671         9.36        4.77       0.806         3.905         0.806        7.64          4.72         751
                           5-7        0.693         8.75        4.74       1.504         5.410         0.752        7.77          4.85         832
                           7-9        0.695         10.06       5.36       1.495         6.904         0.747        9.39          6.47         845
                           9-11       0.683         9.72        7.08       1.553         8.457         0.777        7.36          4.44         715
                           11-13      0.713         10.62       5.37       1.406         9.864         0.703        11.02         8.10         1043
                           13-15      0.692         10.37       5.37       1.509         11.373        0.755        10.06         7.14         773
                           15-17      0.663         8.17        4.20       1.651         13.024        0.826        7.84          4.92         683
                           17-19      0.649         8.69        4.96       1.720         14.744   ,    0.860        7.79          4.87         455


                                                Table A 7    Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                             for C-7










                                                                                                                                                                                   0




                                LWAWd    KUM"                                                        am"











                       CORE:                    C-8
                       LOCATION:                43deg 01.07'N           Kinnickinnic River
                                                87deg 54.08'E
                       WATER DEPTH:             8.2 m (27 ft)
                       CORE LENGTH:             25 cm
                       DATESAMPLED:             09/27/90



                                                                                                       bulk                    excess       Pb-210
                           Depth      Porosity      LOI         TOC       g/cm ^ 2 cumulative        density      Pb-210       Pb-210        (total
                           (cm)                      %            %                      cm^2                     d m/         (dpm/g)     counts)
                            U-1        0.892                    7.73    -T.-3TO-         0.360         0.265       8.46         5.54        _8TI-
                            1-2        0.842        20.35       6.61       0.387         0.747         0.387       9.79         6.87         1010
                            2-3        0.802        11.94       7.66       0.485         1.232         0.485       9.92         7.00         1026
                            3-4        0.777        12.08       7.28       0.546         1.779         0.546       9.36         6.44         859
                            4-5        0.748        10.02       6.12       0.617         2.396         0.617       7.77         4.85         731
                            5-7        0.721        10-04       5.79       1.367         3.763         0.684       7.78         4.86         834
                            7-9        0.713        10-86       6.39       1.406         5.170         0.703       7.79         4.87         765
                           9-11        0.702        8.44        7.73       1.460         6.630         0.730       5.50         2.58         635
                           11-13       0.673        8.13        6.35       1.602         8.232         0.801       6.85         3.93         689
                           13-15       0.672        7.96        7.39       1.607         9.839         0.804       7.51         4.59         608
                           15-17       0.675        7.44        3.84       1.593         11.432        0.796       9.67         6.75         1005
                           17-19       0.663        6.64        3.66       1.651         13.083        0.826       7.48         4.56         754
                           19-21       0.709        8.80        4.10       1.426         14.509        0.713       9.72         6.80         950
                           21-23       0.770        11.53       4.66       1.127         15.636        0.564       10.60        7.68         1149
                           23-25       0.742        11.20       6.14       1.264         16,900        0.632       9.69         6.77         1018


                                                TableA8 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                             for C-8














                          CORE:                        C-9
                          LOCATION:                    43deg 01.50'N               Harbor Entrance
                                                       87deg 53.82'E
                          WATER DEPTH:                 9.3 m (30.6 ft)
                          CORE LENGTH:                 25 cm
                          DATESAMPLED:                 09/27/90


                                                                                                                     bulk                          exces        Pb-210         total
                              Depth        Porosity         L01           TOC       g/cm - 2      cumulative         density      Pb-210         Pb-210s         (total      Cs-137
                              (cm)                           %              %                       g/cm ^ 2         g/cm ^ 3     (d2m/           (dgm/        counts)          )m/9)
                               07-                                                                                                                                         _Ld I
                                                            11.95                       =6           0.3         -7337 -           11. 9           8.97          1152          1.03
                               1-2          0.831           11.55         4.54        0.414          0.774           0.414         11.14           8.22          1181          1.17
                               2-3          0.837           11.77         4.61        0.399          1.174           0.399         12.39           9.47          1260          1.01
                               3-4          0.824           10.62         4.45        0.431          1.605           0.431         12.48           9.56          11,31.        1.09
                               4-5          0.821           10.29         4.85        0.439          2.043           0.439         10.55           7.63          1115          1.09
                               5-7          0.834           11-03         5.03        0.813          2.857           0.407         9.71            6.79          1129          1.00
                               7-9          0.809           12.55
                                                                          5.09    1   0.936          3.793           0.468         11.11           8.19          1039          0.87
                              9-11          0.804           11.57         5.10        0*960          4,753           0,480         9.75            6.83          1063          0.95
                              11-13         0.789           11.26         4.55        1.034          5.787           0.517         11.08           8.16          1036          1.06
                              13-15         0.808           10.34         4.84        0.941          6.728           .0.470        11.13           8.21          862           1.27
                              15-17         0.815           11.53         4.93        0,907          7*634           0,413         11.45           8.53          1134          1.26
                              17-19         0.782           11-55         5.49        1.068          8.702           0.534         7.16            4.24          627           1.02
                              19-21         0.805           12.75         5.52        0.955          9.658           0.478         9.83            6.91          867           1.17
                              21-23         0.811           13.53         5.70        0.926          10.584          0,463         9.78            6.86          929           1.23
                              23-25         0.860           20.64         9.68        0.686          11.270     .    0.343         _8.19           5-27          827           1.07


                                                       Table A 9 Summary of Porosity, LOI, TOC, Bulk Density, Pb-210 and Cs-137
                                                                      for C-9






                                                                                                                                                                                                           tj




                                            i@@       mamw      6awmi
                                                                                            41@                                                                             11w




                      CORE:                      C-10
                      LOCATION:                  43deg 01.39'N            Jones Island outfall
                                                 87deg 53.55'E
                      WATER DEPTH:               8.5 m (28.0 ft)
                      CORELENGTH:                23cm
                      DATESAMPLED:               09/27/90


                                                                                                          bulk                      excess       Pb-210
                           Depth      Porosity        LOI         TOC       g/cm ^ 2    cumulative       density      Pb-210        Pb-210        (total
                           (CM)                       %             %                                        ^ 3      (dpm/g)        dpm/        counts)
                                                                                          A/cm ^ 2      g/cm
                           0.1                                    3.45                                    0. 2         8.74
                           1-2         0,806          6.16        3.19        0.475         0.835         0.475        8.21           5.29         492
                           2-3         0.793          6.20        3.47        0.507         1.343         0.507        7.45           4.53         514
                           3-4         0,758          5.94        3.23        0.593         1.936         0.593        7.09           4.17         404
                           4-5         0.665          3.17        2.21        0.821         2.756         0.821        4.42           1.50         241
                           5-7         0.601          2.20        1.83        1.955         4.711         0.978        4.06           1.14         278
                           7.9         0.586          4.08        1.48        2.029         6.740         1.014        4.27           1.35         280
                           9-11        0.669          5.67        2.02        1.622         8.362         0.811        3.89           0.97         221
                           11-13       0.669          5.36        2.22        1.622         9.994         0.811        4.01           1.09         201
                           13-15       0.711          6.60        2.93        1.416         11.400        0.708        5.36           2.44         272
                           15-17       0.719          7.77        3.15        1.377         12.777        0.688        4.75           1.83         244
                           17-19       0.747          8.97        3.72        1.240         14.016        0.620        5.99           3.07         389
                           19-21       0.759          9.22        3.86        1.181         15.197        0.590        6.75           3.83         356
                           21-23       0.789          10.88       4.71    1   1.034         16.231        0.517        7.80           4.88         441


                                                 TableA10 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                              for C-10
















                    CORE:                     GC-11
                    LOCATION-                 upstream of North Ave. Dam
                    WATER DEPTH:
                    CORELENGTH:               30cm
                    DATE SAMPLED-             10/25/90



                                                                                                     bulk                     excess       Pb-210
                         Depth      Porosity      LOI          TOC      g/cm    2   cumulative      density      Pb-210       Pb-210        (total
                         (CM)                       %           %                     g/cm ^ 2     A/cm ^ 3      d ml   I    (dpm/         counts)
                         0-5         0.780                     7.61       2.695                                   5.10         2.18          497
                         5-10        0.631        7.28         4.60       4,120        7,211         0,901        2*16           *0          211
                         10-15       0.619        5.38         2.59       4.667        11.883        0.933'       2.30                       220
                         15-20       0.722        7.85         3.33       3.406        15.298        0.681        2.67           *0          259
                         20-25       0.741        8.62         3.29       3.173        18.461        0.635        3.35         0.43          318
                         25-30       0.719        7.38         3.03       3.442        21.903        0.688        2.75           *0          283


                                              TableAll Summary of Porosity, LOIJOC, Bulk Density and Pb-210
                                                            for GC- 11



    1.1M.M                           bw        saftow     fton"      b=NMW     6"..Mw     whw*ftw               ih@       do*.-W.    6@











                        CORE:                        C-12
                        LOCATION:                    43deg 01.94'N             Outer Harbor
                                                     87deg 53.23'E
                        WATER DEPTH:                 6.7 m (22 ft)
                        CORELENGTH:                  25 cm
                        DATESAMPLED:                 10/12/90



                                                                                                                 bulk                         excess      Pb-210
                              Depth      Porosity          LOI         TOC       g/cm ^ 2     cumulative         density     Pb-210          Pb-210        (total
                              (Cm                          %             %                        g/cm ^ 2 =Xcm ^ 3          (dp            (dpmlg)       counts)
                              0-1                          5.76        2.77        0.360          0.360          U.333         8.28       -T.TC-            591
                              1-2         0.839            6.08        2.77        0.394          0.755          0.394         8.84           5.92          848
                              2-3         0.805            5.21        2.25        0.478          1.232          0.478         7.97           5.05          602
                              3-4         0.775            4.85        2.35        0.551          1.784          0.551         6.91           3.99          682
                              4-5         0.741            8.99        2.14        0.635          2.418          0.635         5.71           2.79          514
                              5-7         0.644            11.42       2.35        1.744          4.163          0.872         3.77           0.85          265
                              7-9         0.672            11.46       1.95        1.607          5.770          0.804         4.72           1.80          387
                              9-11        0.697            11.55       2.57        1.485          7.254          0.742         4.02           1.10          390
                              11-13       0.731            5.86        2.77        1.318          8.573          0.659         4.93           2.01          406
                              13-15       0.727            5.52        2.87        1.338          9.910          0.669         4.54           1.62          405
                              15-17       0.725            5.73        2.97        1.348          11.258         0.674         4.62           1.70          380
                              17-1.9      0.732            6.11        2.99        1.313          12.571         0.657         4.51           1.59          323
                              19-21       0.758            6.35        3.30        1.186          13.757         0.593         5.16           2.24          456
                              21-23       0.742            7.44        3.51        1.264          15.021         0.632         4.88           1.96          392
                              23-25       0.776            8.25        3.73        1.098          16.119         0,549         5.12           2.20-         395


                                                     TableA12 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                   for C-12





                                                                                                                                                                                                    Qn
















                      CORE:                     C-13
                      LOCATION:                 43deg 01.64'N           Milwaukee/Menomonee River
                                                87deg 54.21'E
                      WATER DEPTH:              9.1 m (30 ft)
                      CORELENGTH:               21cm
                      DATE SAMPLED:             10/02/90


                                                                                                      bulk                      excess      Pb-210
                           Depth     Porosity       LOI         TOC      g/cm **2 cumulative         density      Pb-210       Pb-210         (total
                           cm                        %           %                     g/cm ^ 2     g/cm ^ 3      d m/       _(dpm@).       counts)
                           0-1        0.862                                0.360                                   11.98         9.06         962
                           1-2        0.859         11.94       5.13       0.345        0.706         0.345        10.12         7.20         1034
                           2-3        0.837         11.25       4.98       0.399        1.105         0.399        11.71         8.79         966
                           3-4        0.837         11.09       5.39       0.399        1.504         0.399        11.37         8.45         98@
                           4-5        0.841         11.73       5.31       0.390        1.894         0.390        12.22         9.30         1073
                           5-7        0.839         10.84       5.67       0.789        2.683         0.394        12.20         9.28         1027
                           7-9        0.839         10.76       5.37       0.789        3.472         0.394        13.29         10.37        870
                           9-11       0.842         10.84       5.32       0.774        4.246         0.387        11.94         9.02         1099
                           11-13      0.835         10.76       5.97       0.809        5.054         0.404        11.59         8.67         1060
                           13-15      0.831         11.05       5.36       0.828        5.882         0.414        11.36         8.44         959
                           15-17      0.826         10.02       5.35       0.853        6.735         0.426        11.88         8.96         1198
                           17-19      0.828         9.76        5.44       0.843        7.578         0.421        10.13         7.21         926
                           19-21      0.824         10.38       5.34       0.862        8.440         0.431        10.94         8.02         856


                                                TableA13 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                             for C-13




  how"                                                                           moom











                      CORE:                    GC-15
                      LOCATION:                W. Beecher St., east bank
                      WATER DEPTH:
                      CORELENGTH:              25 cm
                      DATE SAMPLED:            10/23/90



                                                                                                     bulk                     excess       Pb-210
                          Depth      Porosity      LOI          TOC      g/cm    2   cumulative     density      Pb-210       Pb-210        (total
                          (cm)                      %            %                    g/cm ^ 2      A/cm ^ 3         m/       d m/        counts)
                                                             --T3-9                                               6.38          3.46        647
                          5-10        0.550        6.22         4.38      5.513        10.302        1.103        5.81          2.89        621
                          10-15       0.572        8.00         4.86      5.243        15.545        1.049        7.39          4.47        756
                          15-20       0.581        8.45         5.31      5.133        20.678        1.027        8.14          5.22        816
                          20-25       0.585        7.36         5.39      5.084        25.762        1.017        6.39          3.47        655


                                               TableA14 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                            for GC-15















                      CORE:                     GC-16
                      LOCATION:                 confluence of Milwaukee River and Lincoln Creek
                      WATER DEPTH:
                      CORE LENGTH:              25 cm
                      DATE SAMPLED:             10/25/90


                                                                                                        bulk                      excess       Pb-210
                          Depth      Porosity        LOI         TOC       g/cra  2    cumulative      density      Pb-210        Pb-210        (total
                          (cm)                        %           %                      g/cm ^ 2     gjcm ^ 3       (dpm/       (d2m          counts)
                           0-5         0.694    -6.04            3.40                                                               4.06
                          5-10         0.540         6.21        2.54       5.635         9.384         1.127        2.25           *0           203
                          10-15        0,543         6.84        2.71       5.598         14.982        1.120        3.05           0.13         277
                          15-20        0.617         9.55        4.53       4.692         19.674        0.038        4.11           1.19         430
                          20-25        0.609         7.06        2.17       4.790         24.463        0.958        3.02           0.10         287


                                                TableA15 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                              for GC-16





















                                                                                                                                                                                      co














                        CORE:                     GCT-1
                        LOCATION-                 43deg 01.98'N            Milwaukee River transect
                                                  87deg 54.61'E
                        WATER DEPTH:              5.8 m (19 ft)
                        CORELENGTH:               20cm
                        DATE SAMPLED:             10/12/90


                                                                                                         bulk                      excess       Pb-210
                           Depth       Porosity       LOI          TOC      g/cm ^ 2    cumulative      density      Pb-210        Pb-210        (total
                            (CM)                       %            %                     g/cm ^ 2     g/cm ^ 3      d m/         (dpm/@Q..     counts)
                            0--5-                     16.91                   2.070                                    8. 2         -5.9-0
                            5-10        0.804         13.23        5.91       2.401        4.471         0.480         9.12          6.20         757
                           10-15        0.809         11.95        5.38       2.340        6.811         0.468         10.73         7.81        1027
                           15-20        0.811         13.2S        6.25       2.315        9.126         0.463         11.94         9.02        1104


                                                  TableA16 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                               for GCT-1
















                     CORE:                     GCT-2
                     LOCATION:                 43deg 01.98'N           Milwaukee River transect
                                               87deg 54.61'E
                     WATER DEPTH:              6.1 m (20 ft)
                     CORE LENGTH-              25 cm
                     DATE SAMPLED:             10/12/90


                                                                                                     bulk                     excess      Pb-210
                         Depth      Porosity       LOT          TOC      g/cm^2 cumulative          density     Pb-210        Pb-210        (total
                          (cm                       %            %                    --cm^2         cm 3        d gy-       -dpm/g)      counts)
                          0-5         0.83F        7.66         4.93      7-070        2.070         0.414 --     9-74         6.82         1046
                          5-10        0.773        8.63         5.55      2.781        4.851         0.556        7.06         4.14         725
                         10-15        0.772        8.88         5.55      2.793        7.644         0.559        8.95         6.03         699
                         15-20        0,802        9.34         5.42      2.425        10.070        0.485        11.00        8.08         1 1@8
                         20-25        0.795        9.60         5.24   1  2.511        12.581        0.502        10.46        7.54         991



                                               TableA17 Summary of Porosity, LOT, TOC, Bulk Density and Pb-210
                                                             for GCT-2



















                                                                                                                                                                                co
                                                                          rO-7 0-















                         CORE:                       GCT-3
                         LOCATION:                   43deg 01.96'N              Milwaukee River transect
                                                     87deg 54.62'E
                         WATER DEPTH:                6.7 m (22 ft)
                         CORELENGTH:                 25 cm
                         DATE SAMPLED:               10/12/90


                                                                                                                 bulk                       excess       Pb-210
                              Depth       Porosity        LOI          TOC       g/cm ^ 2     cumulative       density       Pb-210         Pb-210         (total
                               (cm)                        %            %                       &Lcm ^ 2         cm "'      (dpm/g)        (d2m/g)
                                6-3"                      8.13         4.'9      7. =9            1.593          0.319         10.91         7.99          1014
                               5-10        0.805          7.66         4.55        2.389          3.981          0.478         8.69          5.77          895
                               10-15       0.791          8.47         5.02        2.560          6.542          0.512         9.97          7.05          973
                              15-20        0.794          8.87         4.76        2.524          9.065          0.505         10.01         7.09          98 2
                              20-25        0.770          8.87         5.14     1  2.818          11.883- 1      0.564         10.24         7.32          1064


                                                     TableA18 Summary of Porosity, LOIJOC, Bulk Density and Pb-210
                                                                    for GCT-3


















                                                                                                                                                                                                   00
                                                                                                                                                                                                   @j














                     CORE:                      GCT-4
                     LOCATION:                  43deg 01.97'N             Milwaukee River transect
                                                87deg 54.60'E
                     WATER DEPTH:               7.0 m (23 ft)
                     CORE LENGTH:               25 cm
                     DATE SAMPLED:              10/12/90


                                                                                                          bulk                       excess       Pb-210
                         Depth       Porosity        LOI          TOC       g1cm,  2 cumulative          density      Pb-210         Pb-210        (total
                         (cm)                         %            %                      91cm ^ 2      9/cm"3 _@dgM@&)             (dem/g        counts)
                                                                                                                        8.97------6-65-@ @8()3
                         5-10         0.661          3.23         3.40    1  4.153         6,052          0.831         3.45          0.53          333
                         10-15        0.796          11.43        5.23       2.499         8.551          0.500         10.37         7.45          894
                         15-20        0.738          8.40         4.00       3.210         11.760         0,642         6.61          3.69          634'
                         20-25        0.815          12.20        5.81       2,266         14.026         0.453   -j- - 13.15 1       10.23-1   ..... .899

                                                Table A19     Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                              for GCT-4



                                   L-d                                              mow"








                       CORE:                     GCT-5
                       LOCATION:                 43deg 01.98'N           Milwaukee River transect
                                                 87deg 54.60'E
                       WATER DEPTH:              6.7 m (22 ft)
                       CORELENGTH:               25cm
                       DATESAMPLED:              10/12/90



                                                                                                        bulk                     excess      Pb-210
                           Depth      Porosity       LOI         TOC        g/cm   2   cumulative     density      Pb-210       Pb-210         (total
                       --LM-)--                       %       -%                  -     g/CM A 2     g/cm ^ 3     (dprn/g)      (dpm/g)      counts)
                           0-5                                   3.94                                '0.315         10.74         7.82         86T-
                           5-10        0.795         12.90       6.69         2.389      3.981          0.478       7.53          4.61         712
                           10-15       0.803         12.40       5.75         2.560      6.542          0.512       9.71          6.79         819
                           15-20       0.798         10.40       4.61         2.524      9.065          0.505       10.41         7.49         905
                           20-25       0.749 1       10.32       5.47         2.818,     11.883         0.564       8.01          5.09         596

                                                TableA20 Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                             for OCT-5


















                                                                                                                                                                                  co
                                                                              2.3'9
                                                                              2 -560
                                                                              2 .524
                                                                                  18
                                                                        278














                       STATION:                        VC-2
                       LOCATION:                       43deg 02.92'N Milwaukee River
                                                       87deg 54.70'W Cherry Street Bridge
                       WATER DEPTH:                    2.2 m (7.3 ft)
                       CORE TYPE:                      push core
                       CORE LENGTH:                    core pushed 3 rn. down, only a 1.45 m core retrieved
                       DATE SAMPLED:                   10/16/91


                                                                                                                     bulk                      excess        Pb-210
                             Depth        Porosity        % LOI        % TOC        g1cm ^ 2      cumulative        density     Pb-210        Pb-210           (total
                             (cm)             -                                                      g/cm ^ 2     g/cm ^ 3      (dpm/g)       (dpm/g)       counts)
                              0'9           0. 8 F0--                    4.82         4.180          4.180          0.464         7.07          4.15           550
                             9-18           0.785         11.24          5.23         4.732          8.912          0.526         6.69          3.77           640
                             18-27          0.775         11.55          5.56         4.961          13.873         0.551         8.56          5.64           666
                             27-36          0.772         11.24          5.67         5.026          18.899         0.558         8.76          5.84           712
                             36-45          0.765         10.98          4.91         5.192          24.090         0.577         8.18          5.26           693
                             45-54          0.785         12.40          8.85         4.739          28.829         0.527         8.66          5.74           776
                             54-63          0.784         13.01          5.04         4.763          33.592         0.529         8.81          5.89           906
                             63-72          0.775         12.09          5.67         4.957          38.549         0.551         8.34          5.42           689
                             72-81          0.771         13.60          5.81         5.052          43.601         0.561         6.23          3.31           512
                             81-90          0.770         14.45          6.40         5.065          48.666         0.563         6.94          4.02           564
                             90-99          0.797         17.53          7.67         4.472          53.139         0.497         5.44          2.52           474
                             99-108         0.782         15.32          6.61         4.807          57.946         0.534         5.42          2.50           461
                             108-117        0.689         16.47          7.49           .848         64.794         0.761         4.34          1.42           351
                             117-126        0.773         15.54          7.19         5.004          69.797         0.556         5.87          2.95           472
                             126-135        0.788_        15.45          7.21         4.684          74.482         0.520         5.25          2.33           458
                                                                                  replicate of last layer                         6.80                         461


                                                      Table A21                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                  for VC-2



                                                                                                                                                                                               03
                                                                                ]Eg/c



                                    hwma      Emma      kmow      6..A       i.@                              .... .j                                                           M







                        STATION:                        VC-3
                        LOCATION:                       43degOl.98'N Milwaukee River
                                                        87deg 54.61'W
                        WATER DEPTH:                    6.1 m (20 ft)
                        CORE TYPE:                      push core
                        CORE LENOTH:                    1.1 m
                        DATE SAMKED:                    10/14/91

                                                                                                                     bulk                       excess       Pb-210
                              Depth         Porosity      % LOI         % TOC        g/cm ^ 2      cumulative       density      Pb-210        Pb-210         (total
                              (cm)                                                                  &Lcm ^ 2         cm^3        (dpm/g)       (dpm/g)       counts)
                                0-7                                       5.47                        2.6U8                                 --T79-             572
                              7-14            0.820        11.18          5.34         3.086          5.694          0.441         7.87          4.95          617
                              14-21           0.840        14.74          6.02         2.746          8.440          0.392         8.82          5.90          806
                              21-28           0.777        11.35          5.14         3.818          12.257         0.545         8.75          5.83          652
                              28-35           0.780        12.30          5.75         3.779          16.036         0.540         8.29          5.37          612
                              35-42           0.786        11.95          5.14         3.666          19.702         0.524         8.28          5.36          712
                              42-49           0.790        13.55          6.20         3.606          23.308         0.515         9.48          6.56          8M
                              49-56           0.814        15.54          6.85         3.197          26.506         0.457         9.31          6.39          683
                              56-63           0.804        14.37          6.60         3.356          29.861         0.479         11.31         8.39          770
                              63-70           0.824        16.24          7.74         3.022          32.884         0.432         10.15         7.23          864
                              70-77           0.788        12.40          5.54         3.633          36.517         0.519         8.01          5.09          697
                              77-84           0.809        11.98          6.03         3.277          39.793         0.468         10.40         7.48          807
                              84-91           0.765        11.71          6.35         4.028          43.821         0.575         8.78          5.86          720
                              91-98           0.780        12.78          5.13         3.771          47.593         0.539         9.56          6.64          792
                              98-105          0.783        12.35          5.35         3.722          51.314         0.532         9.03          6.11          807
                                                                                    replicate of last layer                        10.24                       731


                                                        Table A22                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                    for VC-3



                                                                                                                                                                                                co














                       STATION:                        VC-4
                       LOCATION:                       43deg 01.88'N confluence of Milwaukee & Menomonee Rivers
                                                       87deg 54.63'W
                       WATER DEPTH:                    18 m
                       CORE TYPE:                      long gravity core
                       CORELENGTH:                     0.7 m
                       DATE SAMPLED:                   10/30/91


                                                                                                                     bulk                     excess        Pb-210
                             Depth         Porosity       % LOI        % TOC        g/cm    2    cumulative        density      Pb-210        Pb-210         (total      Cs-137
                             (cm)                                                                   A/cm ^ 2      g/cm "' 3    (dpm/g)        dpm/g)       counts)       d
                                                                                                                                                                        _LPM/9)
                             0-4.5           0.629         6.            2.36         4.087         4.087                         LU4            U            80            0
                             4.5-9.0         0.662         7.27          2.53         3.727         7.814          0.828          1.24           0            91            0
                           9.0-13.5          0.663         7.22          2.62         3.719         11.533         0.826          1.20           0            102           0
                           13.5-18.0         0.652         7.09          2.52         3.834         15.368         0.852          1.45           0            99            0
                           18.0-22.5         0.653         7.92          2.29         3.821         19.189         0.849          1.28           0            108           0
                           22.5-27.0         0.652         7.42          2.28         3.833         23.021         0.852          1.17           0            103           0
                           27.0-31.5         0.637         7.10          2.39         4.007         27.028         0.890          1.31           0            118           0
                           31.5-36.0         0.635         7.63          2.50         4.023         31.051         0.894          1.22           0            80            0
                           36.0-40.5         0.655         7.89          2.78         3.806         34.857         0.846          1.29           0            94            0
                           40.5-45.0         0.652         8.46          2.40         3.835         38.692         0.852          1.45           0            101           0
                           45.0-49.5         0.654         6.28          2.62         3.815         42.507         0.848          1.41           0            118           0
                           49.5-54.0         0.648         8.32          2.87         3.880         46.387         0.862          1.10           0            80            0
                           54.0-58.5         0.651         8.72          2.64           .845        50.232         0.854          1.05           0            76            0
                           58.5-63.0         0.655         8.80          2.26         3.803         54.035         0.845          1.12           0            81            0
                           63.0-67.5         0.641         7.78          2.27         3.956         57.991         0.879    1     1.38           0      1     126     1     0
                                                                                  replicate of last layer                         1.46                        88


                                                      Table A23                   Summary of Porosity, LOI, TOC, Bulk Density, Pb-210
                                                                                  and Cs-137 for VC-4



                                                                                                                                                                                              co













                       STATION:                       VC-6
                       LOCATION:                      43deg 01.89'N Menomonee River
                                                      87deg 54.91'W
                       WATER DEPTH:                   20 m
                       CORE TYPE:                     long gravity core
                       CORE LENGTH:                   I m
                       DATE SAMPLED:                  10/30/91


                                                                                                                   bulk                        excess      Pb-210
                            Depth         Porosity       % LOI         % TOC        g/cm'*, 2    cumulative        density     Pb-210          Pb-210       (total
                              cm                                                                    9/cm ^ 2       g/cm " 3                    (dpm/g)     counts)
                              0-6                         11.00-                     2.433          2.433          079'          10.87         9.39
                            6-12            0.784         10.04         4.47         3.182          5.614          0.530         11.78         10.30          855
                            12-18           0.698         8.26          3.95         4.435          10.050         0.739         9.16          7.68           711
                            18-24           0.651         5.36          3.75         5.129          15.179         0.955         7.51          6.03           569
                            24-30           0.700         9.12          2.31         4.413          19.591         0.735         1.26           *0            93
                            30-36           0.682         7.36          2.38         4.673          24.265         0.779         1.64          0.16           116
                            36-42           0.671         8.05          2.35         4.835          29.100         0.806         1.64          0.16           125
                            42-48           0.667         7.19          2.54         4.901          34.001         0.817         1.81          0.33           130
                            48-54           0.674         6.90          2.62         4.794          38.795         0.799         1.37           *0            101
                            54-60           0.674         8.62          2.59         4.795          43.589         0.799         1.23           *0            102
                            60-66           0.666         8.35          2.31         4.905          48.495         0.818         1.36           *0            124
                            66-72           0.656         7.51          2.21         5.051          53.546         0.842         1.46           *0            108
                            72-78           0.676         7.54          2.42         4.756          58.302         0.793         1.42           *0            100
                            78-84           0.675         7.59          2.57         4.778          63.080         0.796         1.56          0.08           113
                            94-90           0.679         8.28          2.75         4.712          67.792         0.785         1.54          0.06           126
                                                                                  replicate of last layer                        1.61

                        negative excess Pb-210 values assumed         0
                      Supported Pb-210 = 1.48

                                                     Table A24                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                 for VC-6                                                                                                    00














                      STATION:                       VC-7
                      LOCATION:                      43deg 00.50'N Kinnickinnic River
                                                     87 deg 54.59'W
                      WATER DEPTH:                   2.8 m (9.3 ft)
                      CORE TYPE:                     push core
                      CORE LENGTH:                   core pushed 2.25 m down, only a 1.45 m core retrieved
                      DATE SAMPLED:                  10/14/91


                                                                                                                   bulk                         excess     Pb-210
                           Depth         Porosity         % LOI       % TOC        g1cm ^ 2     cumulative         density     Pb-210           Pb-210        (total
                           (cm)                                                                    Ccm ^ 2         g/cm ^ 3    (dpm       _fdPm/g)         counts)
                             0-9           0.                           3.33         9.388         9.388       -Tu@-           "3.65            2.68          378
                           9-18            0.552          6.30          2.63         9.871         19.258          1.097        6.01            3.09          468
                           18-27           0.507          6.12          2.82         10.860        30.118          1.207        4.80            1.88          417
                           27-36           0.633          5.98          '5.20        8.092         38.210          0.899        2.98            0.06          209
                           36-45           0.359          1.56          0.49         14.142        52.351          1.571        0.55            *0            39
                           45-54           0.581          8.65          5.19         9.240         61.592          1.027        5.56            2.64          372
                           54-63           0.579          7.77          4.37         9.292         70.884          1.032        3.85            -0.*93        312
                           63-72           0.590          6.90          2.91         9.050         79.933          1.006        3.68            Q.76          263
                           72-81           0,581          7.98          3.97         9.240         89.173          1.027        4.05            1.13          302
                           81-90           0.591          7.57          3.18         9.016         98.189          1.002        3.12            0.20          238
                           90-99           0.603          7.92          4.37         8.748         106.937         0.972        3.47            0.55          255
                           99-108          0.602          9.16          4.60         8.769         115.707         0.974        4.23            1.31          297
                           108-117         0.591          9.04          4.88         9.012         124.718         1.001        3.11            0.19          222
                           117-126         0.658          11.83         7.55         7.541         132.259         0.838        3.28            0.36          249
                           126-135         0.617          11.13         4.93    -8.439             _140.699   1    0.938        2.58     1      *0            195
                                                                                 replicate of last layer                        2.78                          199

                       negative excess Pb-210 values assumed         0


                                                    Table A25                    Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                 for VC-7                                                                                                     co















                       STATION:                        VC-8
                       LOCATION:                       43deg 01.07'N Kinnickinnic River
                                                       87deg 54.10'W Great Lakes Research Facility
                       WATER DEPTH:                    9.1 m (30 ft)
                       CORE TYPE:                      long gravity core
                       CORELENGTH:                     1.3 m
                       DATE SAMPLED:                   10/30/91


                                                                                                                     bulk                      excess        Pb-210
                             Depth           Porosity     % LOI         % TOC                     cumulative       density       Pb-210        Pb-210         (total
                             (cm)                                                                   g/cm "' 2     R/cm ^ 3      (dpm/g)                      counts
                               0-8           0.828         11.58          6.22        3.373          3.373                        10.17          8.42          767
                             8-16            0.772         11.55          6.85        4.474          7.847           0.559        9.98           8.23          779
                             16-24           0.763         10.28          5.26        4.651          12.498          0.581        9.82           8.07          823
                             24-32           0.729         10.53          5.34        5.303          17.801          0.663        9.14           7.39          677
                             32-40           0.674         8.53           4.18        6.395          24.196          0.799        8.25           6.50          630
                             40-48           0.743         10.69          5.60        5.045          29.241          0.631        9.04           7.29          676
                             48-56           0.744         11.02          5.83        5.008          34.249          0.626        9.43           7.68          946
                             56-64           0.703         11.82          6.95        5.815          40.064          0.727        3.12           1.37          227
                             64-72           0.652         14.68          6.99        6.819          46.884          0.852        1.83           0.08          128
                             72-80           0.645         14.90          10.71       6.962          53.846          0.870        2.25           0.50          175
                             80-98           0.627         14.34          14.58       7.312          61.158          0.914        1.89           0.14          ISO
                             98-96           0.644         9.66           6.53        6.979          68.137          0.872        1.95           0.20          144
                             96-104          0.579         4.60           1.66        8.251          76.388          1.031        1.50            * 0          115
                             104-112         0.607         5.04           2.01        7.712          94.100          0.964        1.62             *0          127
                             112-120         0.629         5.48           1.43        7.280          91.380          0.910        1.23             *0          106
                                                                                   replicate of last layer                        1.34

                         negative excess Pb-210 values assumed           0
                       Supported Pb-210 = 1.67

                                                       Table A26                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                   for VC-8                                                                                                     03














                         STATION:                         VC-9
                         LOCATION:                        43deg 01.50'N Harbor Entrance
                                                          87deg 53,82'W
                         WATER DEPTH:                     9.8 m (32 ft)
                         CORE TYPE:                       long gravity core
                         CORE LENGTH:                     1 rn
                         DATE SAMPLED:                    10/30/91


                                                                                                                           bulk                         excess       Pb-210
                               Depth           Porosity      % LOI         % TOC         g/cm ^ 2      cumulative          density     Pb-210           Pb-210          (total     Cs-137
                               (cm)                                                                       g/cm. ^ 2     g/cm ^ 3       (dpm/g) __@dpm/g)           counts) __(dpm/g)
                                0-7                           11.29           4.33         3.142          3.142                          9.84           8.25            679          1.15
                               7-14            0.769          10.73           4.26         3.960          7.102            0.566         6.17           4.58            455          0.94
                               14-21           0.664          6.00            1.92         5.770          12.872           0.824         2.75           1.16            213          0.23
                               21-28           0.700          7.94            2.88         5.152          18.023           0.736         4.90           3.31            366          0.78
                               28-35           0.734          9.74            4.33         4.559          22.583           0.651         5.76           4.17            376          0.97
                               35-42           0.805          19.60           8.28         3.347          25.929           0.478         7.47           5.88            543          1.22
                               42-49           0.701          11.61           5.61         5.132          31.061-          0.733         4.50           2.91            357          2.51
                               49-56           0.680          10.23           5.22         5.492          36.553           0.785         4.86           3.27            353          5.81
                               56-63           0.649          10.85           5.66         6.019          42.572           0.860         4.09           2.50            269          3.38
                               63-70           0.592          8.27            3.95         6.998          49.569           1.000         2.19           0.60            164          0.30
                               70-77           0.593          5.36            1.96         6.983          56.553           0.998         1.61           0.02            126           0
                               77-94           0.572          5.17            1.86         7.347          63.900           1.050         1.59           0.00            105           0
                               84-91           0.628          7.66            2.81         6.384          70.283           0.912         1.55            *0             93            0
                               91-98           0.579          6.17            1.86         7220           77.503           1.031         1.55            *0             115           0
                              98-105           0.605          7.05            2.64         6.772          84.275           0.967         1.05            *0             76      1     0
                                                                                       replicate of last layer                           1.52                           106
                          negative excess Pb-210 assumed = 0
                         Supported Pb-210 = 1.59

                                                          Table A27                    Summary of Porosity, LOI, TOC, Bulk Density, Pb-210
                                                                                       and Cs-137 for VC-9


                                                                                                                                                                                                          0














                         STATION:                        VC-12
                         LOCATION:                       43deg 01.93'N Outer Harbor
                                                         87deg 53.21'W
                         WATER DEPTH:                    7.6 m (25 ft)
                         CORE TYPE:                      long gravity core
                         CORELENGTH:                     0.85 m
                         DATE SAMPLED:                   10130/91


                                                                                                                      bulk                      excess        Pb-210
                               Depth         Porosity       % LOI        % TOC        g/cm    2    cumulative        density      Pb-210        Pb-210         (total
                               (cm)                                                                  g/cm ^ 2       o1cm ^ 3     (dpm/g) __(dPm/g)            counts)
                                0-5                          5.1T_         2.22         3.482          3.482                        4.15          2.59          3-M-
                               5-10            0.726         6.92          2.72         3.362          6.844          0.672         3.65          2.09          294
                               10-15           0.769         8.89          3.03         2.830          9.674          0.566         3.52          1.96          288
                               15-20           0.767         9.56          3.60         2.850          12.524         0.570         3.69          2.13          244
                               20-25           0.768         9.38          3.73         2.841          15.365         0.568         3.09          1.53          235
                               25-30           0.744         9.41          3.66         3.134          18.499         0.627         3.17          1.61          231
                               30-35           0.753         9.36          4.17.        3.023          21.522         0.605         3.24          1.68          236
                               35-40           0.741         8.90          4.24         3.171          24.693         0.634         2.48          0.92          180
                               45-50           0,697         7.62          3.71         3.712          28.405         0.742         2.05          0.49          127
                               50-55           0.701         8.36          3.99         3.665          32.070         0.733         2.33          0.77          193
                               55-60           0.662         7.92          3.20         4.140          36.210         0.828         1.43            *0          117
                               60-65           0.672         8.79          4.35         4.023          40.233         0.805         1.63          0.07          124
                               65-70           0.679         8.43          3.84         3.936          44.169         0.787         1.58          0.02          110
                               70-75           0.660         8.32          4.00         4.163          48.332         0.833         1.42            *0          ill
                               75-80           0.650         8.13          3.82         4.290          52.621         0.858         1.74          0.18          127
                                                    1,                               replicate of last layer                        1.79                        140
                           Negative excess Pb-210 levels assumed          0
                         Supported Pb-210 = 1.56

                                                         Table A28                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                     for VC-12

                                                                                                                                                                                                 110
                                                                                                                                                                                                 H













                          STATION:                         'VC-34/35
                          LOCATION:                        43deg 01.99'N Menomonee River
                                                           87deg 55.18'W
                          WATER DEPTH:                     5.2 rn (17 ft)
                          CORE TYPE:                       push core
                          CORELENGTH:                      core pushed 2.25 rn down, only a 1.45 m core retrieved
                          DATE SAMPLED:                    10/16/91


                                                                                                                           bulk                        excess       Pb-210
                                Depth           Porosity      % LOI           % TOC      g1cm "' 2     cumulative          density     Pb-210          Pb-210         (total
                                                                                                                           -m^3       (dpm/g)                       counts)
                                (cm)                                                                      g/cm ^ 2     __g@c                        _(dpmlg)
                                  0-9                                         5.13         3.967          3.967            U.441        13.08          10.16
                                9-18            0.778          11.90          5.41         4.890          8.856            0.543        13.06          10.14          1330
                                18-27           0.765          11.33          4.78         5.174          14.030           0.575        13.42          10.50          1405
                                27-36           0.757          12.90          -6.90        5.360          19.391           0.596        12.14          9.22           1081
                                36-45           0.752          14.74          7.44         5.47  1        24.862           0.608        10.49          7.57           955
                                45-54           0.723          11.36          5.15         6.103          30.965           0.678        8.68           5.76           758
                                54-63           0.679          9.98           4.14         7.071          38.036           0.786        9.75           6.83           760
                                63-72           0.760          11.42          6.03         5.300          43.336           0.589        12.88          9.96           1125
                                72-81           0.679          10.61          5.27         7.070          50.406           0.786        8.84           5.92           778
                                81-90           0.650          11.88          5.02         7.716          58.123           0.857        5.37           2.45           466
                                90-99           0.655          12.22          13.21        7.617          65.739           0.846        -4.41          1.49           368
                                99-108          0.674          8.70           6.25         7.183          72.922           0.798        6.34           3.42           588
                                108-117         0.706          11.20          5.44           .477         79.399           0.720        8.64           5.72           703
                                117-126         0.682          11.70          5.38         7.007          86.406           0.779        6.26           3.34           563
                                126-135         0.555          6.53           5.61         9.821          96.227           1.091        8.03           5.11           787
                                                                                       replicate of last layer                          8.22                          822


                                                           Table A29                   Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                       for VC-34/35




                                  bus"       bomad       aw-ONA












                         STATION:                        VC-36
                         LOCATION:                       43deg 01.70'N South Menomonee Canal
                                                         87deg 55.37'W
                         WATER DEPTH:                    6.4 m (21 f t)
                         CORE TYPE:                      push core
                         CORE LENGTH:                    core pushed 2 m down, only a 1.6 m. core retrieved
                         DATE SAMPLED:                   10/16/91


                                                                                                                         bulk                         excess       Pb-210
                               Depth         Porosity       % LOI          % TOC        glern ^ 2     cumulative        density       Pb-210         Pb-210          (total
                               (cm)                                                                      Lcm ^ 2         cm. ", 3    (dpm/g)          dpm/g)
                               0-10            0.834          15.73          6.17         4.055          4.055           0.406         15.67          14.7-          141T-
                               10-20           0.818          13.83          5.99         4.462          8.517           0.446         16.14          14.52          1559
                               20-30           0.781          14.31          7.06         5.365          13.882          0.537         13.76          12.14          1313
                               30-40           0.791          13.39          6.90         5.129          19.010          0.513         11.98          10.36          1058
                               40-50           0.752          14.29          7.17         6.074          25.084          0.607         11.49          9.87'          948
                               50-60           0.769          15.34          6.93         5,653          30.737          0.565         11.34          9.72           1130
                               60-70           0.779          16.86          7.66         5.405          36.142          0.541         12.25          10.63          1001
                               70-80           0.747          18.83          8.99         6.192          42.334          0.619         11.28          9.66           951
                               80-90           0.738          17.33          9.36         6.415          48.749          0.641         8.27           6.65           667
                               90-100          0.710          13.64          9.63         7.093          55.842          0.709         2.76           1.14           253
                               100-110         0.649          12.31          7.57         8.599          64.441          0.860         2.67           1.05           265
                               110-120         0.600          11.55          10.35        9.812          74.253          0.981         1.61             *0           177
                               120-130         0.613          12.13          8.07         9.469          83.723          0.947         1.71           0.09           130
                               130-140         0.641          7.27           4.03         8.797          92.520          0.880         1.42             *0           ill
                               140-150         0.632          9.13           5.28         9.023          101.542         0.902         1.74           0.12           148
                                                                                       replicate of last layer                         1.79                          132

                           negative excess Pb-210 values assumed            0
                         Supported Pb-210 = 1.62

                                                         Table A30                     Summary of Porosity, LOI, TOC, Bulk Density and Pb-210
                                                                                       for VC-36










                                                                        94

















                                    Appendix B

                      Graphical Representation for Each Core

                        -Depth vs. Porosity

                        -Depth vs. %TOC and %LOI

                        -Depth vs. Excess Pb-210 Activity

                        -Excess Pb-210 Activity vs. Cumulative Mass









                                                                                     95

                           C-1                Porosity

                          0.5      0.6      0.7       0.8       0.9       1.0
                         0                    1       VI         I
                         2                     V---V
                         4                        V
                         6                          @7
                         8
                        10                           V
                        12

                        14
                        16
                   Cl-  18
                        20
                        22
                        24
                        26
                        28
                        30 -                  Percent

                           0   2   4   6   8   10 12 14 16 18 20 22
                         0     1   Ll I     I        I   I    I   I   I
                         2        IOL-@
                         4           0
                         6--
                         8
                        10
                        12

                        14

                        16
                   Q)   18 -
                   C)   20 -
                        22 -
                        24 -
                        26 -
                        28 -                                  0 percent LOI
                        30 -                                  0 percent TOC
                                   Ict,
















                  Fig.  B 1  Depth vs. Porosity and Depth     vs. Percent LOI & TOC
                             for C- I










                                                                               96

                          C                        Milwaukee River

                                       Pb-210 Activity [dpm/g]

                         0.1              1               10              100
                        0

                        5                               t
                                                        t

                   E  10
                   U



                      15



                      20



                      25


                      100



                 0)

                 E
                 _0   10


                           -4-74-

                 U

                 Q      1                                2
                 C"I           slope   0.032   0.0206 cm /g




                      0.1-
                         0           5           10          15           20
                                                        It























                                      Cumulative Mass  g/CM2]

                           Fig. B 2 Depth vs. Pb-210 activity and
                                   Pb-210 activity vs. Cummulative mass
                                   for C- I









                                                                                 97

                          C-2                Porosity

                         0.5      0.6     0.7      0.8       0.9      1.0
                        0                               V
                        2                             V

                        4
                        6
                        8
                       10
                       12 -                         @7
                       14 -                          '7
                                                     1
                       16 -                          V
                   0-
                   Q>  18 -                          @7
                       20 -
                       22 -                       V
                       24 -
                       26 -
                       28 -
                       30 -                  Percent

                          0  2    4   6   8  10 12 14 16 18 20 22
                        0          L] I
                        2          0
                        4         Olp
                        6          0
                        8
                       10
                       12 -       0

                       14 -

                       16 -
                       18 -        0
                   Q)
                  C)   20 -
                       22 -
                       24 -       1. 0-4
                       26                                  0 percent LOI
                       28
                       30                                  0 percent TOC
AiL               Fig. B 3  Depth vs. Porosity and Depth   vs. Percent LOI & TOC
                            for C-2











                                                                             98

                         C-2                           Milwaukee River

                                      Pb-210 Activity [dpm/gl

                        0.1              1              10              100
                       0


                       5                          +



                  E  10



                  CL
                     15



                     20



                     25


                     100





                Q-   10
                _0








                0
                             slope   -0.0169    0.0131 cm
                                                           /g

                -0
                0-           r    1.838 g/cm2/yr

                     0.1
                        0           5          10          15          20

                                     Cumulative Moss[g/CM2]
                                                  t

                                                   t























                         Fig. B 4 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for C-2









                                                                            99

                        C-3              Porosity

                       0.5     0.6      0.7     0.8      0.9      1.0
                      0
                      2
                      4                           V
                                                  '7
                      6
                      8                         V
                     10
                 E   12

                     14
                     16
                 Q-  18
                     20                           V
                     22                          V
                     24 -
                     26 -
                     28 -
                     30 -                Percent

                        0   2  4   6   8   lb 12 14 16 18 20 22
                      0     1   lu I    I  I   I   I   I   I   I
                      2           HD
                      4
                      6            0\
                      8
                     10
                     12

                     14

                     16
                     18
                 C)  20
                     22
                     24                    C@
                     26                                0 percent LOI
                     28
                     30                                0 percent TOC

                Fig. B 5  Depth vs. Porosity and Depth vs. Percent, LOI & TOC
                         for C-3
                                       7-










                                                                                      100


                             C-3                              Milwaukee Riv6r

                                           Pb-210 Activity  [dpm/g]
                           0.1                1                10                100
                          0
                                                            t
                          5                                 ++
                                                            t
                        10
                                                           t

                        15



                        20
                                                            t

                        25


                       100



                   01

                   E
                   0-
                   _0   10






                                                                2
                   CN            slope    0.0119     0.0121 cm   /g

                   -0
                   Q-


                       0.1 -
                           0             5            10           15            20

                                          Cumulative Mass [g/CM2]

                             Fig. B 6 Depth vs. Pb-210 activity     and
                                       Pb-210 activity vs. Cummulative mass
                                       for C-3









                                                                                              101

                               C-4                  Porosity

                             0.5        0.6       0.7        0.8        0.9        1.0
                            0                                        V--@Vl         1
                            2                                     71V
                            4                                     17
                            6
                            8                                     V
                            10                                   17
                      E     12
                            14                                    17
                            16
                            18
                            20 -                                 V
                            22 -                                 V
                            24 -
                            26[
                            28
                            30                      Percent

                              0    2    4    6   8    10 12 14 16 18 20 22
                            0           1Oli      I
                            2           0
                            4
                            6             0
                            8
                            10
                            I           lc@
                            _2

                            14

                            16
                            18
                            20
                            22
                            24
                            26                                       0 percent LOI
                            28
                            30                                        0 percent TOC

                     Fig.   B7   Depth vs. Porosity and Depth        vs. Percent LOI & TOC
                                for C-4









                                                                             102

                         C-4            Milwaukee/Menomonee River

                                      Pb-210 Activity [dpm/g]
                        0.1              1              10              100
                      0



                      5                                  +
                                                          t
                                                        t
                  E  lo
                  U



                  a-
                     15 -



                    20  -



                    25


                   100 -



                Cn
                I--,    -                                                -
                E
                Q-          --+-
                _0  10





                0                                         2
                CINI          slope  -Q.0166    0.0109 cm /g
                -0
                             r    1.876 g/cm2/yr

                   0.1
                       0           5           10          15          20
                        F                              t
























                                    Cumulative Mass [g/CM2]

                         Fig. B 8 Depth vs. Pb-210 activity and
                                  .Pb-210 activity vs. Cummulative mass
                                  for C-4









                                                                            103

                        C-5               Porosity

                       0.5      0.6     0.7      0.8      0.9      1.0
                      0                                   m
                      2

                      4
                      6
                      8                               V
                     10
                     12
                     14                        V
                     16
                     18
                 C)  20
                     22
                     24
                     26
                     28
                     30 -                 Percent

                        0   2   4.  6  8   10 12 14    16 18 20 22
                      0     1 1     L@ I I I            I I -T----l
                      2                       K-)-r @,"
                                              0
                      4            0.
                      6

                      8
                     10
                     12           0
                     14
                     16
                     18          0
                     20
                     22
                     24           0
                     26                                 0 percent LOI
                     28
                     30                                 0 percent TOC

                 Fig. B 9 Depth vs. Porosity and Depth  vs. Percent LOI & TOC
                          for -C-5










                                                                              104

                          C-5                         Menomonee River

                                       Pb-210 Activity [dpm/g]
                         0-1              1               10              100
                       0                                      f

                       5



                   E  10


                   52- 15


                      20



                     25


                    100



                 01

                 E
                 0-
                 _0   10





                 0    1                                   2
                              slope    0.0189   0.0076 cm /g



                    0.1
                        0            5           10          15          20

                                      Cumulative Moss [g/CM2]

                          Fig. B 10 Depth vs. Pb-210 activity and
                                   Pb-210 activity vs. Cummulative mass
                                   for C-5









                                                                             105

                         C-6               Porosity

                        o-5      0.6     0.7      0.8      0.9      1.0
                       0
                       2

                       4 -
                       6
                       8                              V
                      10                              V
                      12
                      14 -                         17
                      16 -                          V
                      18
                 Cl   20
                      22
                      24
                      26
                      28
                      30                   Percent

                         0  2   4   6   8 10 12 14 16 18 20 22
                       0            RD   I
                       2           0
                                   0
                       4        F--O---i
                                              01
                       6          Op
                       8
                      10
                  E   12           0

                      14

                      16
                  4-
                      18           0

                      20
                      22
                      24
                      26
                      28                                 0 percent LOI
                      30                                 0 percent TOC

                 Fig. B i I Depth vs. Porosity and Depth vs. Percent LOI & TOC
                          for C-6


 A
 I










                                                                               106

                           C-6                         Menomonee River

                                        Pb-210 Activity [dpm/g]
                         0.1              1               10              100
                       0



                       5



                   E  10
                   0

                      15                                    t
                                                            f

                      20



                      25


                     100



                 01

                 E
                 Q-
                 _0   10






                                                          2
                 C\I           slope   0.0161   0.0077 cm /g
                 -0


                    0.1 -                         I                       ---F-
                         0           5           10          15           20
                                      Cumulative Mass [g/CM2]

                          Fig. B12 Depth vs. Pb-210 activity and
                                   Pb-210 activity vs. Cummulative mass
                                   for C-6









                                                                                             107

                              C-7                  Porosity

                            0.5         0.6       0.7       0.8        0.9        1.0
                           0
                           2

                           4
                           6
                           8
                          10
                     E    12
                          14                      V
                     -c   1.6                 V
                          18
                     Q)
                          20
                          22
                          24
                          26
                          28
                          30                       Percent

                             0    2.   4    6     8  10 12 14 16 18 20 22
                           0       1 0,FLFH 1 0       1    1    1    1   1    1    1
                           2          Of
                           4           0--@]
                           6              0
                           8
                     r 1  10
                     E    12               0-'

                     L j  14
                          16
                          18              0
                          20
                          22
                          24
                          26                                         0 percent LOI
                          28
                          30                                         0 percent TOC
                                                O@?
                                                 j








                    Fig.  B13  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                                for C-7









                                                                               108


                          C-7                        Kinnickinnic River

                                       Pb-210 Activity [dpm/g]

                        0.1               1               10              100
                        0


                        5                            +
                                                     t

                  E   10

                  L-j


                  (D  15--



                      20



                      25


                     100



                 CP

                  E
                      10






                 CD
                              slo-pe  0.0154    0.0177 cm, /g

                 -0
                n



                     0.1
                        0            5           10          15           20

                                      Cumulative Mass [g/CM2]

                          Fig. B14 Depth vs. Pb-210 activity and
                                   Pb-210 activity vs. Cummulative mass
                                   for C-7









                                                                                              109

                               C-8                  Porosity

                             0.5        0.6       0.7        0.8        0.9        1.0
                            0
                            2

                            4
                            6                        17"'
                            8
                           10  -
                           12  -

                           14  -                V
                           16  -                V
                           18  -
                           20  -
                           22  -
                           24  -
                           26  -
                           28  -
                           30  -                    Percent

                               0   2    4    6   8    10 12 14 16 18 20 22
                            0      1    1    1 C:,:@   I   I    I         I    I    I
                            2

                            4
                            6
                            8
                        1  10
                      E    12

                           14
                           16
                      0-   18  -       0
                      0    20  -
                           22  -
                           24  -
                           26                                         0 percent LOI
                           28
                           30                                         0 percent TOC

                     Fig.  B15  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                                for C-8









                                                                             110


                         C-8                        Kinnickinnic River

                                      Pb-210 Activity [dpm/g]

                        0.1              1               10              100
                      0                              +






                  E  i o
                  0     -
                     15                            +
                                                   t
                    20



                    25


                   100



                (71

                E
                Q-
                _0  10
                L j



                >


                0    1                                   2
                CN           slope    0.0086   0.0 123 cm /g

                n



                   0.1
                       0            5           10          15          20
                                     Cumulative Mass [g/CM2]

                         Fig. B16 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for C-8






                               C-9                  Porosity

                             0.5        0.6       0.7         0.8       0.9        1.0
                             0
                             2

                             4
                                                                V
                             6
                             8
                           10                                  NA
                       E   12
                      L---j14
                           16
                           18
                           20
                           22
                           24                                   "@V
                           26
                           28
                           30
                                                    Percent

                              0    2     4  6    8 10 12 14 16 18 20 22
                             0            U
                             2           1-01
                                         0
                             4           0
                             6            0
                           .8                             11\0
                           10
                      F-   12
                           14                         0
                           16
                      4@
                      0-
                      Q)   18              0
                      C)   20
                           22
                           24
                           26
                           28                                        0 percent LOI
                           30                         OJI            0 percent TOC
                    Fig.   B17 Depth vs.    Porosity and Depth vs. Percent LOI & TOC
                                for C-9










                                                                            112

                         C-9                          Harbor Entrance

                                      Pb-210 Activity [dpm/g]
                        0.1             1               10              100
                       0                               1.1      . I I I I.
                                                        f
                                                       f


                       5



                      10


                 -C

                 0-
                      15



                     20



                     25


                    100






                0-
                     10




               0                                         2
                             slope   -0-0361    0.0119 cm /g
               0-            r   0.862 g/cm 2/yr

                   0.1
                       0           5           10          15          20

                                    Cumulative Mass [g/cmI]

                         Fig. B18 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for C-9









                                                                                                         113

                                     C   10               Porosity

                                 0.5         0.6        0.7         0.8         0.9         1.0
                                0
                                2

                                4
                                6
                                8    -      17
                              10     -
                         E    12     -

                              14     -
                              16     -                     V
                              18     -
                              20     -                          V\V
                              22     -
                              24     -
                              26     -
                              28     -
                              30     -                    Percent

                                   0   2     4    6    8 10 12 14 16 18 20 22
                                0          LJ I
                                2         0
                                4          0
                                6
                                8
                              10
                              12        0
                            '-.-14                 0 \
                              16
                         Q-   18     -
                                            0
                              20     -
                              22     -
                              24     -
                              26     -
                              28     -                                       0 percent LOI
                              30     -                                       0 percent TOC

                        Fig.  B19 Depth vs. Porosity and Depth vs. Percent LOI & TOC
                                     for C-10










                                                                                 114


                           C      10                 Jones Island Outfall

                                         Pb-210 Activity Cdpm/g]

                         0.1               1                10               100
                         0


                         5                   -F-


                   E   10
                   U



                       15



                       20



                       25
                      100                                                                  AM

                                                              2
                                 slope  -0.2694    0.0533 cm A
                  0)
                 I--,     - 1                  2
                  E             r   0. 116 g/cm /yr
                  0-
                 _0    10




                 <

                 CD





                 n



                      0.1
                         0            5           10           15           20

                                       Cumulative Mass [g/crn2]

                           Fig. B20 Depth vs. Pb-210 activity and                          A@
                                     Pb-210 activity vs. Cummulative mass
                                     for C-10









                                                                                                  115

                                 GC-11                Porosity

                              0.5        0.6        0.7        0.8        0.9         1.0
                             0
                             2                                17
                             4
                             6
                             8
                            10
                       E    12

                            14
                            16
                       Cl-  18
                            20
                            22
                            24
                            26
                            28
                            30   -                    Percent

                                 0  2    4    6    8    10 12 14 16 18 20 22
                             0
                             2

                             4
                             6
                             8
                            10
                            12

                            14
                                     0


                            16   -
                            18   -     0
                            20   -
                            22   -
                            24   -
                            26   -
                            28   -                                      0 percent LOI
                            30   -                                      0 percent TOC
 AL                   Fig.  B21   Depth vs. Porosity and Depth          vs. Percent LOI & TOC
                                   for GC- 11









                                                                      116

                        C- 12          Porosity

                      0.5     0.6     0.7     0.8    0.9      1.0
                      0                            V
                      2

                      4
                      6
                      8
                    10  -             17"
                 E  12  -
                    14  -               V
                    16  -
                    18  -
                0   20  -
                    22  -                17
                    24  -
                    26  -
                    28  1
                    30                 Percent                                 Alm

                      0   2   4 6 8 10 12 14 16 18 20 22
                     0    lu  I
                     2     0
                     4    0
                     6
                     8
                    10
                    12     0

                    14

                    16
                    18      0
                C)  20
                    22             0
                    24        0      0
                    26
                    28                             0 percent LOI
                    30                              C] percent TOC

                Fig. B22 Depth vs. Porosity and Depth vs. Percent LOI & TOC
                        for C-12









                                                                                          117


                             C- 12                                 Outer Harbor

                                            Pb-210 Activity [dprn/g]

                           0.1                  1                 10                 100
                          0                                  . . , 1.1   1  , , I I .. I
                                                             +



                                                       +

                                                    +
                    E   10
                    U                          +

                    -C
                    GoT 15


                        20



                        25


                        100



                  r I
                                        slope    -0.2911   0.0647 cm Ig

                    E                                  2
                                        r = 0. 107 g/cm /yr
                        10


                            - ------ ---------
                                         -------------
                                                            - ----- . . ......
                   0

                   C'4
                   1                                                             2
                   _U                              slope    -0,0671 ï¿½ 0.0230 cm A
                            -                      r   0.464 g/cm  2 /yr
                        0.1                         1    1 1 1 1 @      I I . I I
                            0              5            10             15            20
                                            Cumulative  Mass [g//cm   2]

                             Fig. B23   Depth vs. Pb-210 activity and
                                        Pb-210 activity vs. Cummulative mass
                                        for C- 12









                                                                                          118

                                C- 13              Porosity

                             0.5       0.6       0.7        0.8      0.9       1.0
                             0                                    V I
                             2                                  V-V
                             4                                 17
                                                                17
                             6
                             8                                 V
                                                                I
                           10                                   V
                      E    12
                     t 01
                           14   -                              V
                           16   -                             V
                           18   -
                           20   -                             '7
                           22   -
                           24   -
                           26   -
                           28   -
                           3G   -
                                                  Percent

                             0    2 4 6         8 10 12      14 16 18 20 22
                             0          C] I    I    I U. I   I    I   F   1    1
                             2           0              F' -4
                                         0              .0
                             4            0           8* *
                                         iqf           P,
                             6            0
                             8
                           10
                      E    12             FO-f

                           14

                           16
                      0-   18
                           20
                           22
                           24
                           26
                           28   -                                  0 percent LOI
                           30   -                                  0 percent TOC

                     Fig. B24 Depth vs. Porosity and Depth         vs. Percent LOI & TOC
                                for C- 13









                                                                        119

                       C- 13         Milwaukee/Menomonee River

                                   Pb-210 Activity Cdpm/g]

                     0.1              1              10             100

                     0
                                                     +
                     5                              +
                r                                    t
                E  lo -
                U
                Li

                -C

                   15 -



                   20



                   25


                   100





                   10





               <
               0     1
                            slope  -0.0102   0.0112 cm /g
                            r   3.042 g/cm2/yr

                   0.1
                      0           5          10          15         20

                                   Cumulative Mass Ig/cmI1

                        Fig. B25 Depth vs. Pb-210 activity and
                                Pb-210 activity vs. CummulaLive mass
                                for C-13










                                                                                 120

                           G-C- 15           Porosity

                          0.5      0.6     0.7      0.8      0.9       1.0
                          0         1        1        1        1        1      -
                          2         17
                          4
                          6
                          8    '7
                        10
                     E  12
                        14
                        16
                   4-@
                        18
                   C)   20
                        22
                                  '7
                        24
                        26
                        28
                        3oL                  Percent

                          0   2 4 6 8         10 12 14 16 18 20 22
                          0
                          2
                          4

                          6
                          8
                        10
                        12-         0
                        14-

                        16-
                   0-                0
                   Q)   18-
                  0     20-
                        22-
                        24
                        26
                        28                                 0 percent LOI
                        30                                 0 percent TOC

                  Fig. B26  Depth vs. Porosity and Depth   vs. Percent LOI & TOC
                             for GC- 15








                                                                           121


                        GC- 15                    Kinnickinnic River

                                     Pb-210 Activity [dpm/g]

                      0.1              1               10              100

                     0



                     5



                E   10



                    15



                    20



                    25























                        Fig. B27 Depth vs. Pb-210 activity for GC-15










                                                                                 122


                            GC- 16
                                             Porosity

                            0.5    0.6      0.7     0.8       0.9      1.0
                            0                1        1        1        1
                            2

                            4
                            6
                            8
                   r -1 10
                        12  - '7
                   1 t  14  -
                        16  -
                        18  -
                    Q)
                   C)   20  -
                        22  -
                        24  -
                        26  -
                        28  -
                        30  L                Percent

                            0 2 4     6   8   10 12 14 16 18 20 22
                        0
                        2
                        4
                        6
                        8
                        10
                   E    12
                   0           u
                  t 1   14  -

                        16  -
                   QcL  18  -      0
                        20  -
                        22  -
                              0
                        24  -
                        26  -
                        28  -                              0 percent LOI
                        30  -                              0 percent TOC
                                        0/





                  Fig. B28  Depth vs. Porosity  and Depth  vs. Percent LOI & TOC
                            for GC-16









                                                                           123

                        GCT- 1           Porosity

                       0.5     0.6      0.7     0.8      0.9      1.0
                      0
                      2

                      4
                      6
                      8                          17
                     10
                     12
                     14
                     16
                     18
                 0   20
                     22
                     24
                     26
                     28
                     30 -                Percent

                        0   2  4   6   8   10 12 14 16 18, 20 22
                      0 ---1- 1-I   I  I   I   I   I   I   I   I   i
                      2          0
                      4
                      6
                      8
                     10
                 E*  12

                 L 0 14
                     16
                 Cl.- 18            0
                 rl  20
                     22
                     24
                     26                                0 percent LOI
                     28
                     30                                0 percent TOC
                                            0

















                 Fig. B29 Depth vs. Porosity and Depth vs. Percent LOI & TOC
                          for GCT- 1










                                                                              124


                          GCT- I             Milwaukee River transect

                                       Pb-21 0 Activity [dpm/g]

                        0.1               1              10              100

                        0



                        5



                  E   10


                  -C

                      15



                      20



                      25
                                                                                       AOL






















                          Fig. B30 Depth vs. Pb-210 activity for GCT-1









                                                                                               125

                                GCT-2                Porosity

                              0.5       0.6        0.7        0.8        0.9        1.0
                            0
                            2

                            4
                            6
                            8
                           10
                           12
                           14   -
                           16   -
                           18   -
                      C)   20   -
                           22   -
                           24   -
                           26   -
                           28   -
                           30   -                    Percent

                                0  2    4    6    8   10 12 14 16 18 20 22
                            0
                            2

                            4
                            6
                            8
                           10
                           12   -

                           14   -
                           16   -
                           18   -
                      Q)
                           20   -
                           22   -
                           24   -
                           26   -
                           28   -                                     0 percent LOI
                           30   -                                     0 percent TOC

                     Fig.  B31   Depth vs. Porosity and Depth         vs.  Percent LOI & TOC
                                  for GCT-2









                                                                             126


                         GCT-2               Milwaukee River transect

                                      Pb-210 Activity [dpm/g]

                        0.1              1               10              100

                       0



                       5



                  E  10


                 -C

                     15



                     20



                     25
                                                                                       CP




















                         Fig. B32 Depth vs. Pb-210 activity for GCT-2









                                                                                               127

                               GCT-3                 Porosity

                             0.5        0.6        0.7        0.8        0.9        1.0
                            0
                            2

                            4
                            6
                            8                                  17
                           10
                      E    12
                           14
                           16
                           18
                           20
                           22
                           24
                           26
                           28
                           30
                                                     Percent

                               0   2    4    6    8 10 12 14 16 18 20 22
                            0
                            2
                            4
                            6
                            8
                           10
                           12

                           14
                      -C   16
                           18
                           20
                           22
                           24
                           26
                           28  -                                      0 percent LOI
                           30  -                                      0 percent TOC
 AL                  Fig.  B33   Depth vs. Porosity and Depth         vs. Percent LOI & TOC
                                  for GCT-3









                                                                              128


                          GCT-3              Milwaukee River transect

                                       Pb-210 Activity [dpm/g]
                        0.1               1              10              100
                       0



                       5



                  E   10



                      15



                      20



                      25
                                                                                       Ad@



















                         Fig. B34 Depth vs. Pb-210 activity for GCT-3









                                                                              129
                           GCT-4            Porosity

                        0.5      0.6      0.7      0.8      0.9      1.0
                        0                  T                   ---------1
                        2                              17
                        4
                        6
                        8
                       10
                   E   12
                       14--
                       16 -
                       18  -
                       20  -
                       22  -
                       24  -
                       26  -
                       28  -
                       30  -               Percent

                           0 2   4   .6  8   10 12 14 16 18 20       22
                        0
                        2
                        4
                        6
                        8
                       10
                       12

                       14
                       16
                  0-   18        0
                  Q>
                       20  -
                       22  -
                       24  -
                       26 [                                                        -
                       28                                0 percent LOI
                       30                                0 percent TOC

                 Fig.  B35 Depth vs. Porosity and Depth  vs. Percent LOI & TOC
                                         0 /












                            for GCT-4










                                                                             130


                         GCT-4               Milwaukee River transect

                                      Pb-210 Activity [dpm/g]

                        0.1                              10              100

                       0




                       5



                  E  10


                 -C

                  CL
                     15



                     20



                     25                                T-rrl























                         Fig. B36 Depth vs. Pb-210 activity for GCT-4








                                                                           131

                         GCT-5            Porosity

                       0.5      0.6     0.7      0.8     0.9      1.0
                      0
                      2

                      4
                      6
                      8
                      10
                   E  12
                      14
                      16
                  4-j
                  0-  18
                   a)
                      20
                      22
                      24
                      26
                      28
                      30 -                Percent

                        0   2   4   6  8   10 12 14 16 18 20 22
                      0     1   1   1   1   1  1   1   1   1   1   1
                      2        0
                      4
                      6
                      8
                      10
                      12
 A                    14
                      16
                      18        1-0-1
                   Q)
                  C)  20
                      22
                      24
                      26
                      28                               0 percent LOI
                      30                               0 percent TOC
                                            0


















                 Fig. B37 Depth vs. Porosity and Depth vs. Percent LOI & TOC
                           for GCT-5









                                                                              132


                          GCT-5              Milwaukee River transect

                                       Pb-210 Activity [dpm/g]

                        0.1               1              10              100

                        0



                        5



                  E   10

                  L--j



                      15



                      20



                      25























                          Fig. B38 Depth vs. Pb-210 activity for GCT-5








                                                                               133

                           VC-2             Porosity

                        0.3     0.4    0.5     0.6    0.7     0.8     0.9
                        0
                      10
                      20
                      30                                     V
                      40   -                                V
                      50   -                                 )7
                  E   60   -
                                                             4
                      70   -                                 I
                      80   -                                V
                                                            V
                      90   -
                  0  100   -
                                                             17
                     110   -
                     120   -
                     130   -                                 @7
                     140   L
                     150                    Percent

                          0  2    4    6   8   10 12 14      16 18 20
                        0
                      10
                      20
                      30   -          0
                      40   -
                      50   -                         0
                  E   60   -                          \0
                      70   -          b
                      80   -                           O\
                  Q-  90   -
                  Q)                      0
                     100   -            0
                     110   -
                     120   -
                     130
                                         0                        0 percent LOI
                     140                                          0 percent TOC
                     150

                 Fig. B39  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                            for VC-2










                                                                             134


                         VC-2                    Milwaukee River

                                      Pb-210 Activity [dpm/g]

                        0.1              1              1               100

                      0



                     30



                  E  60
                  U
                                                +
                     90



                    120



                    150


                    100

                                                                 2
                                    slope   -0.0131    0.0037 cm /g
                 E                  r   2.386 g cm 2/yr
                 0-  10





                 0

                 C"!


                 -0



                    0.1
                        0        30        60       90        120      150

                                     Cumulative Moss [g/CM2]

                          Fig. B40 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for VC-2









                                                                              135

                         VC-3              Porosity

                        0.3    0.4    0.5     0.6    0.7     0.8    0.9
                        0
                      10
                      20
                      30
                      40
                 r 1  50 -
                 E    60 -                                    '7
                      70 -
                      80 -
                      90 -
                 q)
                 r)  100 -                                  @7
                     110 -
                     120 -
                     130
                     140
                     150                   Percent

                         0   2   4    6    8  10 12 14 16 18 20
qw                      0            qI    I   I    I   I    I   I
                      10 -          0
                      20 -
                                    4
                      30 -           0
                      40 -
                      50 -
                 E    60 -
                 lul  70 -
                 -C   80 -
                 4-0
                 0-   90 -            0
                 q)                 Cil"
                     100 -          0
                     110 -
                     120 -
                     130 -                                       0 percent LOI
                     140 -                                       0 percent TOC
                     150 -


                 Fig. B41  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                           for VC-3
                                      C@&









                                                                             136


                         VC-3                     Milwaukee River

                                      Pb-210 Activity [dpm/g]

                       0.1               1              10              100
                      0



                     30


                                                      +
                E    60                                +
                LUi                                   +


                0-
                     90
                                                       +


                   120



                   150


                   100
                                                                                      CP
                                                                2
                                    slope   0.0053    0.0026 cm
                CP                                                9
                '-I     -
                E
                a-
                _0   10





                0






                   0.1 -
                        0        30       60         90       120       150

                                     Cumulative Mass [g/CM2]

                         Fig. B42 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for VC-3









                                                                                 137
                           VC-4              Porosity

                          0.3    0.4    0.5     0.6    0.7     0.8     0.9
                          0                        V'7
                       10
                       20
                       30
                       40
                       50
                  E    60
                  0                                '7
                       70
                  -C   80
                       90
                  0   100
                      110
                      120
                      130
                      140
                      150  -                 Percent

                          0   2    4   6    8   10 12 14 16 18 20
                         0

                       10
                       20
                       30
                       40
                       50
                  E    60
                       70
                       80
                       90
                  Q)
                  C)  100
                      110
                      120
                      130 -                                           percent LOI
                      140 -
                      150 -                                        0 percent TOC

                  Fig. B43  Depth vs. Porosity and Depth vs.   Percent LOI & TOC
                            f
                              r V
                             o   C-4










                                                                                  138

                             VC-6             Porosity

                             0.3  0.4    0.5     0.6    0.7     0.8     0.9
                             0     1      1       1              1 17
                         10  -
                         20  -
                         30  -
                         40  -                          V
                         50  -
                   E     60  -                          107
                         70  -
                         80  -                          V
                         90  -
                         100 -
                         110 -
                         120.-
                         130 -
                         140 -
                         150 -                Percent

                             0 2   4    6    8  10 12 14 16 18 20
                         0          C]
                         10
                         20
                         30  - 0
                         40  -
                 r  1    50  -  0
                  E      60  -
                         70  - 0
                         80  - 0
                                0
                  0-
                         90  -
                         100 -
                         110 -
                         120 -
                         130 -
                         140 -                                      0 percent LOI
                         150 -                                      0 percent TOC

                  Fig. B44   Depth vs. Porosity and Depth vs. Percent LOI & TOC
                                      0:::::::<
                                             10





















                             for VC-6








                                                                           139


                       VC-6                     Menomonee River

                                    Pb-210 Activity [dpm/g]

                      0.1              1              10              100

                     0



                   30



                E  60



                   90



                   120



                   150


                   100

                                                                2
                                   slope   -0.0436    0.0147 cm /g

                E                  r   0.714 g1cm  lyr
                CL
                   10





                <

                0




                _U



                   0.1

                       0        30        60       90       120       150

                                    Cumulative Mass [g/CM2]

                         Fig. B45 Depth vs. Pb-210 activity and
                                 Pb-210 activity vs. Cummulative mass
                                 for VC-6









                                                                                 140

                            VC-7              Porosity

                          0.3    0.4     0.5     0.6    0.7     0.8    0.9
                          0                    '7
                        10
                        20
                        30
                        40
                        50
                   E    60
                  tot   70                      @7
                        80                      V
                        90
                                                 17
                  C)   100                        1
                                                 V
                       110
                       120
                       130
                       140
                       150                   Percent

                          0    2   4    6   8    10 12 14 16 18
                        0      1    1   1/0  1   1    1    1   1    1
                        10  -    /P
                        20  -
                        30  -
                        40
                        50  -
                        60                  0
                        70
                        80
                  Q)    90
                       100
                       110
                       120
                       130                                          0 percent LOI
                       140
                       150                                          0 percent TOC

                  Fig. B46  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                             for VC-7








                                                                            141


                        VC-7                     Kinnickinic River

                                     Pb-210 Activity [dpm/g]

                      0.01         0.1          1           10         100

                      0



                    30



                E   60
                u



                    90



                   120



                   150


                   100

                                                                  2
                                    slope     0.0178    0.0042 cm. A
                                                   2
                    10              r   1.749 g/cm /yr




               0

               CI4
                   0.1




                   0.01

                       0        30        60        90       120       150

                                    Curnulative Moss Cg/Crn2]

                         Fig. B47 Depth vs. Pb-210 Activity and
                                  Pb-210 Activity vs. Cummulative mass
                                  for VC-7










                                                                                  142


                                              Porosity

                           0.3    0.4     0.5    0.6    0.7     0.8     0.9
                           0
                         10
                         20                                   '7
                         30
                         40
                         50  -                              @7
                         60  -
                         70  -
                         80  -
                                                   '7
                   Q)    90  -
                       100   -
                       110   -
                       120   -
                       130   -
                       140   -
                       150   -                Percent

                           0   2    4   6     8  10 12 14 16 18 20
                         0
                         10
                         20
                         30
                         40
                         50
                         60
                         70
                         80
                         90
                   Q)
                       100
                       110 -   El
                       120 -
                       130 -                                        0 percent LOI
                       140 -
                                                                    0 percent TOC
                                              04














                       150 -

                   Fig. B48  Depth.vs. Porosity and Depth vs. Percent LOI & TOC
                             for VC-8









                                                                             143

                        VC-8                     Kinnickinnic River

                                      Pb-210 Activity [dpm/g]
                       0.1              1               10              100
                      0


                                                      f
                    30                                 +


                    60


                C-
                -+I
                0-
                (1) 90
                0


                   120



                   150


                   100

                                                                 2
                                    slope   -0.0049    0.0026 cm /g
                IE                  r   6.346 g/cm 2/yr
                CIL
                _0  10




                <                  +
                0

                                                                    2
                                      slope    -0.01.72  0.0115 cm /g
                -0

                                      r = 1.807 g/cm /yr                 -
                   0.1  1                            1 11, 1 11 1. 11,
                       0        30        60        90        120      150

                                    Cumulative Mass [g/CM2]

                         Fig. B49 Depth vs. Pb-210 Activity and
                                  Pb-210 Activity vs. Cummulative mass
                                  for VC-8










                                                                                 144


                            VC-9
                                             Porosity

                          0.3    0.4     0.5    0.6     0.7     0.8    0.9
                          0       1       1                      17      1
                        10  -
                        20  -
                        30  -
                        40  -
                        50  -
                        60  -
                        70  -
                  -C    80  -
                        90  -
                        loo -
                        110 -
                        120 -
                        130 -
                        140 -
                        150 -                Percent

                              2    4   6    8 10 12 14 16 18           20
                        0                        1 PI     I    I    I   I
                        10
                        20
                        30

                        40
                        50
                  E     6o
                        70
                        80
                  0-    go-   0,0
                      loo -    0
                      110 -
                      120 -
                      130 -                                        0 percent LOI
                      140 -
                      150 -                                        0 percent TOC

                  Fig. B50  Depth vs. Porosity and  Depth vs. Percent LOI & TOC
                            for VC-9









                                                                                                                                                           145


                                                 VC-9                                               Harbor Entrance

                                                                            Pb-210 Activity [dprn/g]

                                              0.1                                 1                              10                               100

                                            0

                                         30                                                       +

                                                                                                +
                                E        60                                                   +   +
                                U
                                L--j


                                CL       90



                                        120



                                        150


                                        100

                                                                                                                                    2
                                                                         slope            -0.0194               0.0130 cm /9
                                                                         r        1.609 g/cm            2 /yr
                                         10




                                U
                                <

                                0






                                        0.1

                                                0                 30                  60                  90                  120                 150

                                                                           Cumulative Mass                 [g/CM2]

                                                   Fig. B51 Depth vs. Pb-210 activity and
 AL                                                                  Pb-210 activity vs. Cummulative mass
                                                                     for VC-9









                                                                             146


                         VC-9                     Harbor Entrance

                                      Pb-210 Activity [dpm/g]

                        0.1              1              10              100
                       0


                                         4-
                     30                          ++

                                                 +
                 E   60                       +

                 -C

                 a)  90



                    120



                    150


                    100

                                                                 2
                                    slope    -0.2227   0.0364 cm. /g
                 01
                 E                  r    0. 140 g/cm /yr
                 0-
                 _0  10





                 0
                                        slope   -0.0182    0.0169 cm 2/9
                 n                      r = 1.706 g/cm 2/yr

                    0. 1

                        0        30        60       90        120       150

                                     Cumulative Mass [g/CM2

                          Fig. B52 Depth vs. Pb-210 activity and
                                  Pb-210 activity vs. Cummulative mass
                                  for VC-9









                                                                                147

                           VC- 12           Porosity

                        0.3      0.4   0.5     0.6    0.7     0.8     0.9
                         0         1     1      1       IV     I
                       10  -
                       20  -
                       30  -
                       40  -                           V---V
                 r 1   50  -
                  E    60  -                         '7
                       70                           V
                                                   17
                       80
                       90
                  C) 100
                     110
                     120
                     130
                     140
                     150   -                Percent

                          0   2    4   6   8   10 12 14 16 18 20
                        0     U    I
                       10  -   0
                       20  -       0
                                   0
                       30  -       00
                       40  -       00
                       50  -
                       60  -
                                   0
                L -.-1 70  -       0
                       80  -
                  0-   90  -
                  Q)
                     100   -
                     110   -
                     120   -
                     130   -                                      0 percent LOI
                     140   -                                       0 percent TOC
                     150   -
                                          0'@_,O











                  Fig. B53  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                            for VC-12










                                                                          148


                        VC-12                   Outer Harbor

                                     Pb-210 Activity [dpm/g]

                       0.1             1              10             100

                      0



                    30


                                    -4-
                E   60


                C-

                0-
                    90



                    120



                    150


                    100
                                                               2
                                   slope   -0.0469   0.0086 cm /g

                                                  2
                E                  r   0.664 g/cm /yr
                a-
                _0  10





                0






                     0.1
                        0       30        60       90       120       150

                                    Cumulative Mass [g/CM2]
                         Fig. B54 Depth vs. Pb-210 activity and                   Aft
                        *@14@



                                  Pb-210 activity vs. Cummulative mass
                                  for VC-12









                                                                                 149
                            VC-34/35         Porosity

                            0.3  0.4     0.5    0.6     0.7    0.8     0.9
                            0
                        10
                        20
                        30
                        40
                        50  -                             '7/
                        60  -
                        70  -
                        80  -
                  CL
                        90  -
                                                     V
                      100   -
                      110   -                         17 \V
                      120   -
                      130   -
                      140   -
                      150   -
                                             Percent

                            0 2    4    6   8   10 12 14 16 18 20
                        0
                        10
                        20  -
                        30  -
                        40  -
                        50  -        Cr
                  E     60  -                   0:@
                 LO,    70  -                      '0
                        80  -
                        90  -
                      100   -
                      110   -
                      120   -
                      130   -
                      140   -                                      0 percent Lol
                      150   -                                      0 percent TOC


                                                    Depth vs
                  Fig. B55  Depth vs. Porosity and             Percent LOI & TOC
                            for VC-34/35









                                                                            150

                         VC-34/35                Menomonee River

                                      Pb-210 Activity [dpm/g]
                       0.1              1              10              100
                      0



                    30



                E   60
                U




                Q-
                    90



                   120



                   150


                   100

                                    slope   -0.0127   0.0034 cm
                                                                  9

                                                   2
                E                   r   2.461 g/cm /yr
                aL
                _0  10




                <

                0

                CN


                -0
                0-



                   0.1
                       0        30        60       90        120      150

                                    Cumulative Mass [g/CM2]
                         Fig. 856 Depth vs. Pb-210 activity and
                                 Pb-210 activity vs. Cummulative mass
                                 for VC-34/35








                                                                                    151

                          VC-34/35                   Menomonee River

                                         Pb-210 Activity [dpm/g]

                        0.1                 1                10                100

                        0



                      30


                      60                                   +
                 U
                 L--j



                 CL
                      90




                     120



                     150


                     100

                                       slope    -0.0171     0.0041  cm /g
                                        r   1.824 g/cm /yr
                 E
                      10

                                            ................. ......



                 <

                 0
                 @74
                                         slope = -0.0115     0.0112 cm /g
                                  .............          2
                         -               r = 2.710 g/cm /yr
                     0.1  i- . I I I I 1 .11,11,11,11,          1 1 . I I I .
                         0         30         60         90         120        150

                                         Cumulative Mass [g/Crn2 ]

                           Fig. B57 Depth vs. Pb-210    activity and
                                     Pb-210 activity vs. Cummulative mass
                                     for VC-34/35









                                                                                 152

                            VC-36            Porosity

                          0.3    0.4     0.5    0.6    0.7     0.8     0.9
                                  1                               17    1
                        10  -
                        20  -                                    17
                        30  -
                        40  -
                        50  -                                @7
                   E    60  -
                        70
                        80  -
                   Q)   90  -
                       100  -
                       110  -
                       120  -
                       130  -
                       140  -
                       150  -
                                             Percent

                          0    2   4    6    8  10 12 14 16 18 20
                          0

                        10
                        20
                        30
                        40
                        50
                        60  -             0
                        70
                        80  -
                   0-                          0
                   Q)   90  -
                       100  -
                       110  -                        /0
                       120  -               >
                       130  -          ------0                      0 percent LOI
                                                            0,
                                                         Cr






                       140  -      0\\O                             0 percent TOC
                       150  -

                   Fig. B58  Depth vs. Porosity and Depth vs. Percent LOI & TOC
                             for VC-36








                                                                           153


                        VC-36                   South Menomonee Canal

                                     Pb-210 Activity [dpm/g]
                      0.1              1               10              100
                      0



                    30



                E   60
                U
                Li

                -C

                a)  90



                   120



                   150


                   100

                                                                  2
                                     slope   -0.0134    0.0026 cm /g
                                                    2
                                     r   2.316 g/cm /yr
                E

                -0
                    10


                :tf





                0






                   0.1 ......
                       0        30       60        90       120       ISO

                                    Cumulative Moss [g/cm2l

                        Fig. B59 Depth vs. Pb-210 activity and
A66                              Pb-210 activity vs. CummulaLive mass
                                 for VC-36










                                                                       154

















                                    Appendix C

                         Computer Program for Calculating

                          Slope and Sedimentation Rates






                                                                               0








                                                                               is









                                                                                                           155







                     C      The program calculates sedimentation rate(r)
                     c      The data file contain the corename in the Ist line
                     C      number of data pairs in 2nd line
                     c      and finally the activity(s) and cumulative mass in the
                     c      following line

                            dimension s(100),cumass(100)
                            character core*30

                            plamda=0-0311387
                            sw--O-O
                            swmlns=0-0
                            swlns=0-0
                            swm-0.0
                            swMW--0.0
                            swline--0. 0

                            read(5,20)  core
                            read*,n
                            print 26
                            do 8 i=l,n
                              read*,s(i) cumass(i)
                                write(6,;) s(i),cuaass(i)
                                   SW-SW+s(i)
                                     sinnln--i--sw=3Lns+(z (i) *cumass (i) *log (s (i) -2.12)
                                   swlns=swlns+(s(i)*Iog(s(*)-2.92))
                                swm-zww+(s(i)*cumass(i))
                              swm=--sv=+(s(i)*cumass(i)**2)
                            continue

                            a= ((sw*swmlns) - (swm*swlns)) / ((sw*swmm) - (swm) **2)
                            b=((swlnz*swmm)-(svm*swmlns))/((sw*swmm)-(swm).t**2

                            do 10 i=l,n
                            . . swline---swline+ (s (i) *(log (a (i) -2.92) - (a*cumass; (i) +b) **2)
                     10     continue

                            delta=sqrt(((sw*swline)/((n-2)*((sw*swmm)-swm**2))))
                            rp-plazdal(a+delta)
                            rn--plamda/(a-delta)
                             r - -plamda/a
  41                         print*,
                             print  25,core
                             print  21,a
                             print  23,delta
                             print  22,exp(b)
                             print  24,rp,rn
                             print  27,r

                     9       format(2flO.3)
                     20      format(a30)
                     21      format(14x,'SLOPEI,lx,'=',.lx,fIO-4)
                     22      format(15x,'LnSol,lx,'-",,Ix,flO.3)
                     23      format(8x,'DELTA SLOPE1,lx,1=1,lx,f10.4)
                     24      format (lx, I SEDIMENTATION RATEf, Ix, 1=1, Ix, flo.3,2x, 'OR', Ix, flO. 3)
                     25      format(/Ilx-,"ICORENAMEI,lx,':',Ix,a3O)
                     26      format(6x,1S1,7x,1cumass1)
                     27      format (lx, 'SEDIMENTATION RATE', Ix,       Ix, f10.3)

                            print*,Isw', sw
                            print*,Iswlns', swins
                            print*,1swm1,sw=
                            print*,Iswmlnsl,swmlns
                            -print*,Iswmml,-swmm
                            pri-nt*,Iswlinel,swline
                            end
  A










































































                                                                    N


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