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









                                                             SOUTH CAROLINA


                                               STORMWATER MANAGEMENT



                                      AND SEDIMENT CONTROL HANDBOOK

                                       FOR LAND DISTURBANCE ACTIVITIES






                                                                   JANUARY 1995









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                                            TABLE OF CONTENTS

                                                                                                        Page

     I.  Synopsis ....................................................................................1

     H.   Scope .................................                   ...... ...      .. .... ........................................................

     mIi. Activities                 Requiring Permits ...............................................1...... 

     IV. Permit Applicability...........................................................................................   1

     V.  Application Forms and Checklists  ........................................................... 3

     VI. Plan Submittal ......................................................... ....................................... 3

     VII. NPDES General Permit Coverage .............................. 3

     VIII. Construction Placard ...................................................................................    3

     IX. Notification of Initiation of Land Disturbance Activity                    ................................................. 3

     X.    Request for Final Site Inspection .....       .         ...............................   ........................    3

     XI. Design Guidelines for Sediment Control .................................................................. 3

     XII. Fees .....................................................4 ....................         .................................. 4

     XIII. Inspections............. ............. ;....................... 5

     XIV. Violations and Enforcement   ...............................................  5

     XV. Sample Best Management Practices (BMPs) ................................ ............................ 5

     Appendix A.  South Carolina Stormwater Management and Sediment Reduction Regulations

     Appendix B  Coastal Zone Management Program Refinements for Stormwater Management

     Appendix C.  NPDES General Permit for Stormwater Discharges from Construction Activities

     .   Appendix D.  Application Forms with Instructions and Submittal Check Lists

     Appendix E.  Sample Construction Placard

5: ~Appendix F.  Notification of Initiation of Land Disturbance Activity and Request for Final Inspection

     A{ i Appfdix G.  Design Guidelines for Sediment Control
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Appendix H. Rainfall Data for South Carolina

Appendix I. Sample Stormwater Management and Sediment Reduction Best Management Practices








            S. C. DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
         STORMWATER MANAGEMENT AND SEDIMENT REDUCTION HANDBOOK

 I. Synopsis:

 This handbook is a compilation of existing South Carolina stormwater management regulations and
 supporting information that applicants will need to proceed through the land disturbance permitting
 process. The objective of this document is to create a comprehensive reference for individuals who will
 be submitting a stormwater management and sediment reduction permit application for approval to the
 Department of Health and Environmental Control (DHEC).  This handbook summarizes the application
 process and sets forth the minimum standards and design specifications for land disturbing activities
 that require stormwater permits. The supporting information includes application forms, checklists,
 sediment control design aids and other useful information. This document references pertinent sections
 from the S. C. Stormwater Management and Sediment Reduction regulations, the NPDES Permits for
 Stormwater Discharges from Construction Activities (General and Individual permits) and the Coastal
 Zone Management Program Refinements which are included as appendices.


 II. Scope:

A stormwater management plan in compliance with the requirements of existing regulations must be
submitted for most land disturbing activities in South Carolina. Appendix A contains a copy of the
S. C.  Stormwater Management and Sediment Reduction regulations.  The DHEC Office of Ocean and
Coastal Resource Management  (OCRM),  formerly the S. C. Coastal Council,  administers  the
stormwater management  program  in the following  eight coastal counties:  Beaufort,  Berkeley,
Charleston, Colleton, Dorchester,  Georgetown, Horry, and Jasper.   The stormwater permitting
program for the rest of the state is implemented by DHEC's Bureau of Water Pollution Control, which
now includes parts of the former Land Resources Conservation Commission.


III. Activities Requiring Permits:

Currently all land disturbing activities of two (2) acres or greater in the thirty-one (31) most populace
counties in the state require a stormwater management permit prior to construction (see Section 72-303
of Appendix A). Land disturbing activities in the other fifteen counties presently require permitting for
five (5) acres or greater of disturbance which will drop to two (2) acres on July 1, 1995. In the Coastal
counties, if the activity is within one-half (1/2) mile of a receiving waterbody, projects disturbing less
than two (2) acres may require a permit depending on the type of project (see next section).  Land
disturbances of five (5) acres or greater require NPDES construction permits regardless of the location
of the activity.


IV. Permit Applicability:

Specific requirements of the permit application and approval process are based on the amount of actual
land disturbance and, if the activity is in the Coastal Zone, the project's proximity to a receiving
waterbody. The permit application procedure is as follows:


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        (1)    For activities involving two (2) acres or less of actual land disturbance and which
                are not part of a larger common plan of development or sale, the person responsible for
                the activity shall submit a simplified stormwater management and sediment control plan
                meeting the requirements of R.72-307H in Appendix A and the reporting form found in
                Appendix D. This plan does not require approval by the Department of Health and
                Environmental Control and does IQt require preparation or certification by a registered
                engineer, landscape architect, or Tier B land surveyor. The DHEC staff does have the
                authority to conduct site inspections on these projects to insure compliance with the
                submitted plans.

        (2)    For activities involving two (2) acres or less of actual land disturbance which are
                within one-half (1/2) mile of a receiving waterbody in the Coastal Zone. The
                Coastal Zone Management Program Refinements  (Appendix B) state that "stormwater
                management and sediment reduction plan submittal and regulatory approval shall be
                required for those smaller projects located within 1/2 mile of a receiving waterbody."
                Particular emphasis shall be placed on the following projects in this category:

                (a)    All  commercial   buildings   which   will  handle  hazardous   chemicals
                       (including gasoline, kerosene, diesel fuel, nutrients, etc.).
                (b)    All commercial buildings and parking/runway areas with greater than one (1)
                       acre of impervious surface (building and parking).
               (c)    All commercial buildings and parking/runway areas with greater than one-half
                       (1/2) acre of impervious surface located directly adjacent to a saltwater
                       (critical) area.
               (d)    All residential subdivision developments located directly adjacent to a saltwater
                       (critical) area.
               (e)    All projects impacting Geographical Areas Of Particular Concern (GAPC's).

        These activities (a-e) must meet the requirements of R.72-307I in Appendix A and must have
the plans and specifications prepared by a registered engineer, landscape architect or Tier B land
surveyor.   Other activities in this category require a permit but must only meet the submittal
requirements of R.72-307H which do not require preparation by a licensed professional.

        (3)    For activities involving more than two (2) acres and less than five (5) acres of
               actual land disturbance which are not part of a larger common plan of development
               or sale, a simplified permitting approval process will be used meeting the requirements
               of R.72-307I in Appendix A. Plans and specifications for these activities will be
               prepared by professional engineers, landscape architects or tier B land surveyors.

       (4)    For activities involving more than five (5) acres of actual land disturbance, the
               requirements of R.72-305 and R.72-307 from Appendix A and requirements of General
               Permit SCR100,000 in Appendix C apply. Plans and specifications for these activities
               will be prepared by professional engineers, landscape architects or Tier B land
               surveyors.

Additional design requirements for certain projects in the Coastal Zone as adopted in the Coastal Zone
Management Program Refinements are contained in Appendix B. These requirements address design
needs for activities located in close proximity to receiving waterbodies, bridge projects, golf courses,
mines and landfills.


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 V. Application Forms and Checklists:

 Appendix D contains all the necessary application forms and checklists to use in a stormwater
management and sediment reduction permit submittal package.


VI. Plan Submittal:

The responsible agent should do a preliminary analysis to determine which of the different categories a
project would fall under and then submit the appropriate application form and information required on
the checklist. The initial submittal package should include only one (1) paper copy of the stormwater
management and sediment reduction plans and corresponding calculations. After the plans have been
reviewed to determine compliance with the regulations, the DHEC plan reviewer will contact the
applicant/engineer and request necessary changes or notify the individual that the plans are in
compliance. When the plans have been determined to be in compliance then the applicant/engineer
shall send either four (4) additional paper copies or one (1) mylar copy for stamp approval. One copy
of the plans is for the engineer/agent, one is for the owner, one is for the contractor and must be
available onsite at all times and one copy is for the DHEC inspector.


VII. NPDES General Permit Coverage:

Any construction project disturbing five (5) acres or greater must obtain either NPDES general permit
coverage or an individual NPDES permit. NPDES General Permit coverage under SCR100,000 can
be obtained by the above referenced submittal information including application form # 3306
(9/94), plans and specifications.  Therefore, application form:# 3306 (9/94) shall serve as the
Notice Of Intent (NOI) for NPDES general permit coverage for most land disturbance activities.

If a project has a disturbed acreage of five (5) acres or more and is exempt from the requirements of
Title 48 Chapter 14 by Section 40 and by R.72-302 but not exempt from the requirements of
SCR100,000 pursuant to Regulation 61-9, then the EPA Notice of Intent (NOI) found in Appendix D
must be submitted.  Filing this form guarantees that a Pollution Prevention Plan (PPP) has been
developed and will be maintained on site.

The S. C. Department of Transportation (SCDOT) must comply with SCR100,000 pursuant to
Regulation 61-9 and Regulation 72-400. All Department of Transportation projects are required to file
the EPA Notice of Intent (NOI) form at least 48 hours prior to start of construction.  A copy of the
plans developed in compliance with R.72-400 must be submitted at the time the contract is awarded.


VIII. Construction Placard:

A land disturbance permit construction placard will be sent out with the permit letter.  This placard
should be posted at the site at the beginning of a land disturbance activity.  A sample placard is in
Appendix E.






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IX. Notification of Initiation of Land Disturbance Activity

Appendix F contains a sample letter which should be sent to the appropriate DHEC plan reviewer with
a carbon copy to the local DHEC District office prior to initiation of the land disturbance activity. A
list of the DHEC District offices and their addresses is included in Appendix F.


X. Request for Final Site Inspection

Appendix F also has a sample letter which can be sent to the appropriate DHEC contact requesting a
final site inspection.


XI. Design Guidelines For Sediment/Erosion Control

The stormwater management regulations require that when stormwater runoff drains to a single outlet
from land disturbing activities which disturb ten (10) acres or more then a sediment basin must be
designed to meet a removal efficiency of 80 percent for suspended solids or 0.5 ML/L peak settable
concentration, which ever is less. The efficiency shall be calculated for disturbed conditions for the 10-
year 24-hour design event. There are computer software packages available that can be used to
calculate the removal efficiencies of certain sediment control practices.  In addition, Appendix G
contains a report titled "Engineering Aids and Design Guidelines for Control of Sediment in South
Carolina" which can be referenced when calculating sediment removal efficiencies.

Activities that have between five (5) and ten (10) acres of land disturbance area draining to a single
outlet may incorporate other practices besides a sediment basin to achieve the equivalent removal
efficiency of 80 percent for suspended solids or 0.5 ML/L peak settable solids concentration. Specific
site conditions and/or topography may eliminate the need for removal efficiency calculations.
Construction activities that disturb less than five (5) acres do not require sediment calculations but the
design of these projects must include sediment control best management practices during construction.


XII. Rainfall Data for South Carolina

Appendix H contains rainfall data and rainfall-erosivity factors (R factors) for all South Carolina
counties to be used in hydrology and sedimentology calculations.  Additional information such as the
eroded particle size distributions for all South Carolina soils can be obtained from DHEC upon request.


XIII. Fees:

A fee of fifty (50) dollars per disturbed acre up to a maximum of $1000 is required for all land
disturbance activities of two (2) or more acres.  There is no fee charged for government activities
(local, state, and federal) or for projects that disturb less than two (2) acres. An application for a
waiver or a variance must include a $100 fee. In order to estimate the area of land disturbance for
subdivisions without exact build out plans, use the following formula:

       Amount of Disturbance = 2[Max Restricted Building Size][Number of Lots] + ROW areas
            Right of Way (ROW) areas include clearing for roads, utilities, easements etc.


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XIV. Inspections:

The DHEC staff will conduct periodic site inspections on all land disturbing activities.  The person
responsible for the land disturbing activity shall notify the appropriate inspection agency  before
initiation of construction and upon project completion when a final inspection will be conducted to
ensure compliance with the approved stormwater management and sediment control plan. DHEC or
any other responsible inspection agency shall, for inspection purposes, do all of the following items:

        (1)     Ensure that the approved stormwater management and sediment control plans are on
               the project site and are complied with;

        (2)     Ensure that every active site is inspected for compliance with the approved plan on a
               regular basis;

        (3)     Provide the person responsible for the land disturbing activity a written report after
               every inspection.

        (4)     Notify the person responsible for the land disturbing activity in writing when violations
               are observed, describing the:

               i(a)   Nature of the violation;
               (b)     Required corrective action; and
               (c)     Time period for violation correction.


XV. Violations and Enforcement:

Violations of the stormwater regulations will occur when (a) a site with an approved stormwater permit
is not in compliance with the issued permit or (b) a land disturbing activity is underway and the agent
has not acquired the necessary permit. Enforcement procedures will vary according to the severity of
the violation but might include imposing fines or issuing cease and desist orders. Violations of the S.
C. Pollution Control Act as prescribed by SCR100,000 pursuant to Regulation 61-9 may subject the
applicant to a civil penalty of up to  $10,000 per violation per day.  Additional information on
enforcement procedures is contained in Section 72-312 of Appendix A.


XVI. Best Management Practices (BMPs):

Appendix I contains a table and illustrations of some of the stormwater management and sediment
reduction best management practices (BMPs) used in South Carolina.   The existing conditions
determined from site surveys will aid in selecting the most effective BMPs to use when designing a plan
for permit submittal.  Included in the BMP section is a sample subdivision lot detail (Figure 11) that
can be used to illustrate the necessary sediment control practices that a contractor for an individual
home site in a subdivision may have to incorporate.  Additional methods of stormwater management
and sediment control can be found in "A Guide to Site Development and Best Management Practices
for Stormwater Management and Sediment Control" distributed by DHEC.


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          APPENDIX A

S. C. STORMWATER MANAGEMENT AND

SEDIMENT REDUCTION REGULATIONS










                                      FINAL REGULATIONS


 LAND RESOURCES CONSERVATION COMMISSION

 CHAPTER 72
     Statutory Authority: 1976 Code, Title 48, Chapter 14


 72-300 Standards for Stormwater Management and Sediment Reduction
 Synopsis:
 These proposed regulations pursuant to the Stormwater Management and Sediment Reduction Act of
 1991 establish the procedure and minimum standards for a statewide uniform program for stormwater
 management and sediment reduction with the option of being operated locally. The regulations
 establish the procedure for local governments or conservation districts to apply for program component
 delegation. They also establish the criteria to be met for delegation. Minimum standards and
 specifications are established for land disturbing activities that require a permit.
 The proposed regulations encourage management of stormwater and sediment on a watershed basis.
 Criteria and procedures are established for designating watersheds and creating stormwater utilities.
When the law becomes effective, it will be implemented in a phased approach as listed in the
regulations.
Instructions:
New regulations added.
Text:
72-300. Scope.
72-301. Definitions.
72-302. Exemptions, Waivers and Variances from Law.
72-303. Commission Responsibilities.
72-304. Criteria for Delegation/Revocation of Programs.
72-305. Permit Application and Approval Process.
72-306. Fees.
72-307. Specific Design Criteria, Minimum Standards and Specifications.
72-308. Maintenance Requirements and Off-Site Damage Correction.
72-309. Criteria for Designated Watersheds.
72-310. Criteria for Implementation of a Stormwater Utility.V
72-311. Plan Review and Inspector Certification Program.
72-312. Review and Enforcement Requirements.
72-313. Hearings and Hearings Procedures.
72-314. Citizen Complaint Procedure on Delegated Program Components and Individual Sites.
72-315. Penalties.
72-316. Severability.









72-300. Scope.
    A. Stormwater runoff is a source of pollution of waters of the State, and may add to existing
        flooding problems. The implementation of a statewide stormwater management and sediment
        control program will help prevent additional water quantity and quality problems and may
       reduce existing problems.
    B. Stormwater management and sediment control plan approvals are necessary prior to engaging
        in any land disturbing activity related to residential, commercial, industrial or institutional land
       use which are not specifically exempted or waived by these regulations.
   C. To the extent possible, the Commission intends to delegate the provisions of these regulations
       to local governments. Those program provisions which are subject to delegation include
        stormwater management and sediment control plan approval, construction and maintenance
        inspections, enforcement, and education and training.
    D. The Commission encourages the implementation of the Stormwater Management and Sediment
        Reduction Act on a watershed basis by local governments. The Commission recognizes that all
       jurisdictions may not have the resources available to implement this type of program
        immediately. However, the comprehensive approach of implementing the program on the
       watershed basis will allow for planned, orderly development in a watershed.
    E. The implementation of a stormwater utility represents a comprehensive approach to program
       funding and implementation. The activities which may be undertaken by a stormwater utility
       include not only assessment, collection, and funding activities, but also carrying out provisions
       of adopted stormwater management plans. These provisions may include contracting for such
       services as project construction, project maintenance, project inspection, and enforcement of
       installation and maintenance requirements imposed with respect to approved land disturbing
       activities.

72-301. Definitions.
As used in these regulations, the following terms shall have the meanings indicated below:
    1.  "Adverse Impact" means a significant negative impact to land, water and associated resources
       resulting from a land disturbing activity. The negative impact includes increased risk of
       flooding; degradation of water quality; increased sedimentation; reduced groundwater recharge;
       negative impacts on aquatic organisms; negative impacts on wildlife and other resources; and
       threatened public health.
   2.  "Applicant" means a person, firm, or governmental agency who executes the necessary forms
       to obtain approval or a permit for a land disturbing activity.
   3. "Appropriate Plan Approval Agency" means the Commission, Local Government, or
       Conservation District that is responsible in a jurisdiction for review and approval of stormwater
       management and sediment control plans.
   4. "As-Built Plans or Record Documents" means a set of engineering or site drawings that
       delineate the specific permitted stormwater management facility as actually constructed.
   5. "Best Management Practices" means a wide range of management procedures, schedules of
       activities, prohibitions on practices and other management practices which have been
       demonstrated to effectively control the quality and/or quantity of stormwater runoff and which
       are compatible with the planned land use.
   6. "Certified Construction Inspector" means a person with the responsibility for conducting
       inspections during construction and maintenance inspections after the land disturbing activity is
       completed as certified by the Commission.








  7.  "Certified Plan Reviewer" means a person with the responsibility for reviewing stormwater
     management and sediment control plans for an appropriate plan approval agency as certified by
     the Commission.
  8. "Commission" means the South Carolina Land Resources Conservation Commission.
 9.  "Delegation" means the acceptance of responsibility by a Local Government or Conservation
     District for the implementation of one or more elements of the statewide stormwater
     management and sediment control program.
  10. "Designated Watershed" means a watershed designated by a local government and approved by
     the Commission, Department of Health and Environmental Control and the South Carolina
     Water Resources Commission and identified as having an existing or potential stormwater,
     sediment control, or nonpoint source pollution problem.
 11. "Detention Structure" means a permanent stormwater management structure whose primary
     purpose is to temporarily store stormwater runoff and release the stored runoff at controlled
     rates.
 12. "Develop Land" means to change the runoff characteristics of a parcel of land in conjunction
     with residential, commercial, industrial, or institutional construction or alteration.
 13. "Developer" means a person undertaking, or for whose benefit, activities covered by these
     regulations are commenced and/or carried out.
 14. "District" means any soil and water conservation district created pursuant to Chapter 9, Title
     48, S.C. Code of Laws.
 15. "Drainage Area" means that area contributing runoff to a single point.
 16. "Easement" means a grant or reservation by the owner of land for the use of such land by
     others for a specific purpose or purposes, and which must be included in the conveyance of
    land affected by such easement.
 17. "Erosion" means the wearing away of land surface by the action of wind, water, gravity, ice,
    or any combination of those forces.
 18. "Erosion and Sediment Control" means the control of solid material, both mineral and organic,
    during a land disturbing activity to prevent its transport out of the disturbed area by means of
    air, water, gravity, or ice.
19. "Exemption" means those land disturbing activities that are not subject to the sediment and
    stormwater requirements contained in these regulations.
20. "Grading" means excavating, filling (including hydraulic fill) or stockpiling of earth material,
    or any combination thereof, including the land in its excavated or filled condition.
21. "Implementing Agency" means the Commission, local government, or conservation district
   .with the responsibility for receiving stormwater management and sediment control plans for
    review and approval, reviewing plans, issuing permits for land disturbing activities, or
    conducting inspections and enforcement actions in a specified jurisdiction.
22. "Infiltration" means the passage or movement of water through the soil profile.
23. "Land Disturbing Activity" means any use of the land by any person that results in a change in
    the natural cover or topography that may cause erosion and contribute to sediment and alter the
    quality and quantity of stormwater runoff.
24. "Natural Waterways" means waterways that are part of the natural topography. They usually
    maintain a continuous or seasonal flow during the year and are characterized as being irregular
    in cross-section with a meandering course. Construction channels such as drainage ditches
    shall not be considered natural waterways.
25. "Nonerodible" means a material, e.g., natural rock, riprap, concrete, plastic, etc., that will not
   experience surface wear due to natural forces of wind, water ice, gravity or a combination of
   those forces.









 26. "Local Government" means any county, municipality, or any combination of counties or
     municipalities, acting through a joint program pursuant to the provisions of this chapter.
 27. "Nonpoint Source Pollution" means pollution contained in stormwater runoff from ill-defined,
     diffuse sources.
28. "One Hundred Year Frequency Storm" means a storm that is capable of producing rainfall
     expected to be equaled or exceeded on the average of once in 100 years. It also may be
     expressed as an exceedence probability with a 1 percent chance of being equaled or exceeded
     in any given year.
29. "Person" means any State or federal agency, individual, partnership, firm, association, joint
    venture, public or private corporation, trust, estate, commission, board, public or private
     institution, utility, cooperative, municipality or other political subdivision of this State, any
    interstate body or any other legal entity.
30. "Person Responsible for the Land Disturbing Activity" means
    (a) the person who has or represents having financial or operational control over the land
        disturbing activity; and/or
    (b) the landowner or person in possession or control of the land who directly or indirectly
        allowed the land disturbing activity or has benefitted from it or who has failed to comply
        with any provision of the act, these regulations, or any order or local ordinance adopted
        pursuant to this act as imposes a duty upon him.
31. "Post-Development" means the conditions which exist following the completion of the land
    disturbing activity in terms of topography, vegetation, land use and rate, volume or direction
    stormwater runoff.
32. "Pre-Development" means the conditions which existed prior to the initiation of the land
    disturbing activity in terms of topography, vegetation, land use and rate, volume or direction of
    stormwater runoff.
33. "Redevelopment" means a land disturbance activity that alters the current use of the land but
    does not necessarily alter the pre-development runoff characteristics.
34. "Responsible Personnel" means any foreman, superintendent, or similar individual who is the
    on-site person in charge of land disturbing activities.
35. "Retention Structure" means a permanent structure whose primary purpose is to permanently
    store a given volume of stormwater runoff. Release of the given volume is by infiltration
    and/or evaporation.
36. "Sediment" means solid particulate matter, both mineral and organic, that has been or is being
    transported by water, air, ice, or gravity from its site of origin.
37. "Single Family Residence-Separately Built" means a noncommercial dwelling that is occupied
    exclusively by one family and not part of a residential subdivision development.
38. "Stabilization" means the installation of vegetative or structural measures to establish a soil
    cover to reduce soil erosion by stormwater runoff, wind, ice and gravity.
39. "Stop Work Order" means an order directing the person responsible for the land disturbing
    activity to cease and desist all or any portion of the work which violates the provisions of this
    act.
40. "Stormwater Management" means, for:
    (a) quantitative control, a system of vegetative or structural measures, or both, that control the
        increased volume and rate of stormwater runoff caused by manmade changes to the land;
    (b) qualitative control, a system of vegetative, structural, or other measures that reduce or
        eliminate pollutants that might otherwise be carried by stormwater runoff.
41. "Stormwater Management and Sediment Control Plan" means a set of drawings, other
    documents, and supporting calculations submitted by a person as a prerequisite to obtaining a









    permit to undertake a land disturbing activity, which contains all of the information and
    specifications required by an implementing agency.
42. "Stormwater Runoff' means direct response of a watershed to precipitation and includes the
    surface and subsurface runoff that enters a ditch, stream, storm sewer or other concentrated
    flow during and following the precipitation.
43. "Stormwater Utility" means an administrative organization that has been created for the
    purposes of planning, designing, constructing, and maintaining stormwater management,
    sediment control and flood control programs and projects.
44. "Subdivision", unless otherwise defined in an ordinance adopted by a local government
    pursuant to Section 6-7-1010, means all divisions of a tract or parcel of land into two or more
    lots, building sites, or other divisions, or parcels less than five acres, for the purpose, whether
    immediate or future, of sale, legacy, or building development, or includes all division of land
    involving a new street or a change in existing streets, and includes resubdivision and, where
    appropriate, in the context, shall relate to the process of subdividing or to the land or area
    subdivided.
45. "Swale" means a structural measure with a lining of grass, riprap or other materials which can
    function as a detention structure and convey stormwater runoff without causing erosion.
46. "Ten-Year Frequency Storm" means a storm that is capable of producing rainfall expected to
    be equaled or exceeded on the average of once in 10 years. It may also be expressed as an
    exceedence probability with a 10 percent chance of being equaled or exceeded in any given
    year.
47. "Twenty-Five Year Frequency Storm" means a storm that is capable of producing rainfall
    expected to be equaled or exceeded on the average of once in 25 years. It also may be
    expressed as an exceedence probability with a 4 percent chance of being equaled or exceeded
    in any given year.
48. "Two-Year Frequency Storm" means a storm that is capable of producing rainfall expected to
    be equaled or exceeded on the average of once in two years. It may also be expressed as an
    exceedence probability with a 50 percent chance of being equaled or exceeded in any given
    year.
49. "Variance" means the modification of the minimum sediment and stormwater management
    requirements for specific circumstances where strict adherence of the requirements would result
    in unnecessary hardship and not fulfill the intent of these regulations.
50. "Waiver" means the relinquishment from sediment and stormwater management requirements
   by the appropriate plan approval authority for a specific land disturbing activity on a case-by-
   case review basis.
51. "Water Quality" means those characteristics of stormwater runoff from a land disturbing
    activity that relate to the physical, chemical, biological, or radiological integrity of water.
52. "Water Quantity" means those characteristics of stormwater runoff that relate to the rate and
    volume of the stormwater runoff to downstream areas resulting from land disturbing activities.
53. "Watershed" means the drainage area contributing stormwater runoff to a single point.
54. "Watershed Master Plan" means a plan for a designated watershed that analyzes the impact of
   existing and future land uses and land disturbing activities in the entire watershed and includes
   strategies to reduce nonpoint source pollution, to manage stormwater runoff and control
   flooding. The plan must be developed for the entire watershed, regardless of political
   boundaries, and must include appropriate physical, institutional, economic and administrative
   data needed to justify the plan.








72-302. Exemptions, Waivers, and Variances From Law.
   A. The following activities are exempt from both the sediment control and stormwater
       management requirements established by these regulations:
        (1)     Land disturbing activities on agricultural land for production of plants and animals
           useful to man, including but not limited to: forages and sod crops, grains and feed crops,
           tobacco, cotton, and peanuts; dairy animals and dairy products; poultry and poultry
           products; livestock, including beef cattle, sheep, swine, horses, ponies, mules, or goats,
            including the breeding and grazing of these animals; bees; fur animals and aquaculture,
            except that the construction of an agricultural structure of one or more acres, such as
           broiler houses, machine sheds, repair shops and other major buildings and which require
            the issuance of a building permit shall require the submittal and approval of a stormwater
           management and sediment control plan prior to the start of the land disturbing activity.
        (2)     Land disturbing activities undertaken on forest land for the production and harvesting
            of timber and timber products.
        (3)     Activities undertaken by persons who are otherwise regulated by the provisions of
            Chapter 20 of Title 48, the South Carolina Mining Act.
        (4)     Construction or improvement of single family residences or their accessory buildings
           which are separately built and not part of multiple construction in a subdivision
           development.
        (5)     Land disturbing activities, other than activities identified in R.72-302A(6), that are
           conducted under another state or federal environmental permitting, licensing, or
           certification program where the state or federal environmental permit, license, or
           certification is conditioned on compliance with the minimum standards and criteria
           developed under this act.
       (6)     Any of the following land disturbing activities undertaken by any person who provides
           gas, electrification, or communications services, subject to the jurisdiction of the South
            Carolina Public Service Commission, or corporations organized and operating pursuant to
            Section 33-49-10 et seq.:
            (a) land disturbing activities conducted pursuant to a certificate of environmental
                compatibility and public convenience and necessity issued pursuant to Title 58, Chapter
                33, of the South Carolina Code, or land disturbing activities conducted pursuant to any
                other certification or authorization issued by the Public Service Commission;
           (b) land disturbing activities conducted pursuant to a federal environmental permit,
                including Section 404 of the Federal Clean Water Act, and including permits issued by
               the Federal Energy Regulatory Commission;
            (c) land disturbing activities associated with emergency maintenance or construction of
                electric, gas, or communications facilities, when necessary to restore service or when
                the Governor declares the area to have sustained a disaster and the actions are
                undertaken to protect the public from a threat to health or safety;
            (d) land disturbing activities associated with routine maintenance and/or repair of electric,
                gas, or communications lines;
            (e) land disturbing activities associated with the placement'of poles for overhead
               distribution or transmission of electric energy or of communications services;
            (f) land disturbing activities associated with placement of underground lines for
                distribution or transmission of electric energy or of gas or communications services; or
            (g) land disturbing activities conducted by a person filing environmental reports,
                assessments or impact statements with the United States Department of Agriculture,
                Rural Electrification Administration in regard to a project.









Any person, other than a person identified in R.72-302A(6)(g) who undertakes land disturbing activities
described in R.72-302A(6)(d,e,f) must file with the South Carolina Public Service Commission, in a
Policy and Procedures Manual, the procedures it will follow in conducting such activities. Any person,
other than a person identified in R.72-302A(6)(g), who conducts land disturbing activities described in
R.72-302A(6)(b), must address the procedures it will follow in conducting the activities in the Policy
and Procedures Manual filed with the South Carolina Public Service Commission to the extent that the
land disturbing activities are not specifically addressed in the federal permit or permitting process. If
any person, other than a person identified in R.72-302A(6)(g), does not have a Policy and Procedures
Manual on file with the Public Service Commission, such manual must be filed with the Public Service
Commission not later than six months after the effective date of Chapter 14, Title 48 of the 1976 Code
of Laws, South Carolina.
Any person who undertakes land disturbing activities described in R.72-302A(6)(g) of this subsection
shall give the same written notice to the commission as given to agencies whose permits are required
for project approval by the regulations of the United States Department of Agriculture, Rural
Electrification Administration.
    (7) Activities relating to the routine maintenance and/or repair or rebuilding of the tracks, rights-
        of-way, bridges, communication facilities and other related structures and facilities of a railroad
        company.
    (8) Activities undertaken on state-owned or managed lands that are otherwise regulated by the
       provisions of Chapter 18 of this title, the Erosion and Sediment Reduction Act.
   (9) Activities undertaken by local governments or special purpose or public service districts
        relating to the repair and maintenance of existing facilities and structures.

   B. Implementing agencies with responsibility for plan review and approval may grant waivers
       from the stormwater management requirements of these regulations for individual land
       disturbing activities provided that a written request is submitted by the applicant containing
       descriptions, drawings, and any other information that is necessary to evaluate the proposed
       land disturbing activity. A separate written waiver request shall be required if there are
       subsequent additions, extensions, or modifications which would alter the approved stormwater
       runoff characteristics to a land disturbing activity receiving a waiver.
       (1)    A project may be eligible for a waiver of stormwater management for both quantitative
           and qualitative control if the applicant can demonstrate that the proposed project will return
           the disturbed area to a pre-development runoff condition and the pre-development land use
           is unchanged at the conclusion of the project.
       (2)    A project may be eligible for a waiver or variance of stormwater management for water
           quantity control if the applicant can demonstrate that:
           (a) The proposed project will have no significant adverse impact on the receiving natural
               waterway or downstream properties; or
           (b) The imposition of peak control requirements for rates of stormwater runoff would
               aggravate downstream flooding.
       (3)    The implementing agency will conduct its review of the request for waiver within 10
           working days. Failure of the implementing agency to act by end of the tenth working day
           will result in the automatic approval of the waiver.

   C. The implementing agency with responsibility for plan review and approval may grant a written
       variance from any requirement of these regulations if there are exceptional circumstances
       applicable to the site such that strict adherence to the provisions of these regulations will result
       in unnecessary hardship and not fulfill the intent of these regulations. A written request for








       variance shall be provided to the plan approval agency and shall state the specific variances
       sought and the reasons with supporting data for their granting. The plan approval agency shall
       not grant a variance unless and until sufficient specific reasons justifying the variance are
       provided by the applicant. The implementing agency will conduct its review of the request for
       variance within 10 working days. Failure of the implementing agency to act by the end of the
       tenth working day will result in the automatic approval of the variance.

72-303. Commission Responsibilities.
   A. The Commission is responsible for the implementation and supervision of the stormwater
       management and sediment control program which is established by Chapter 14, Title 48, S.C.
       Code.
   B. The schedule for implementing the Stormwater Management and Sediment Control Act (48-14-
       10, et. seq.) has been established by the Commission as follows:
       (1)    These regulations are effective and applicable to all land disturbing activities of five
           acres and greater on October 1, 1992 regardless of program status at the local level. Local
           governments with existing local programs as of this date shall require that persons
           responsible for land disturbing activities on sites with disturbed areas of five acres or
           greater comply with these regulations. Local governments may request assistance from the
           Commission to implement these regulations on these sites. If a local government does not
           have a local program on October 1, 1992, the Commission and others shall function as the
           implementing agencies.

       (2) FY 1992-1993
          Greenville
          Charleston
          Richland
          Spartanburg
          Lexington
          Anderson
          Horry
          York
          Berkeley
          Aiken
          Florence
          Sumter
          Pickens
          Beaufort
          Orangeburg

       (3) FY 1993-1994
          Dorchester
          Darlington
         Greenwood
          Laurens
          Oconee
         Lancaster
         Georgetown
         Cherokee-








           Kershaw
           Chesterfield
           Williamsburg
           Colleton
           Marion
           Newberry
           Chester
           Union

        (4)    FY 1994-1995
           Marlboro
           Dillon
           Clarendon
           Abbeville
           Fairfield
           Barnwell
           Lee
           Edgefield
           Hampton
           Bamberg
           Saluda
           Jasper
          Calhoun
          Allendale
          McCormick

    C. This schedule may be modified by the Commission due to requests from local governments to
       develop and implement a program prior to the scheduled implementation date. The
       Commission may also modify this schedule due to personnel or financial resource limitations.
   D. Local governments which adopted stormwater management and/or sediment control programs
       prior to the effective date of these regulations may continue to administer the existing program
       until the scheduled implementation date for the local government.

72-304. Criteria for Delegation/Revocation of Program Elements.
   A. The Commission may delegate the following components of stormwater management and
       sediment control programs to local governments or conservation districts as follows:
       (1) Stormwater management and sediment control plan review and approval/disapproval.
       (2) Inspections during construction and maintenance inspections.
       (3) Enforcement.
       (4) Education and training.
   B. The Commission shall grant delegation of one or more program elements to any local
       government or conservation district seeking delegation that is found capable and meets all of
       the criteria set forth herein for delegation to comply with Chapter 48, Title 14, 1976 Code and
       these regulations.
   C. Request for delegation of more than one program element may be accomplished by the 
       submission of one request for all the elements requested. A rejection by the Commission of
       one element will not jeopardize delegation of other requested program elements.








D. To be considered capable of providing compliance with Chapter 14 and these regulations,
    applications for delegation of program elements shall contain the following requisite items:
    (1) Requests for delegation of stormwater management and sediment control plan review and
        approval responsibility shall include the following information:
        (a) Copy of enacted ordinance or program information detailing the plan approval process,
        (b) Plan review check lists and plan submission requirements,
        (c) Stormwater management and sediment control criteria, including waiver and variance
            procedures, that meet minimum standards established by these regulations,
        (d) Description of personnel allocations including qualifications and experience of
            personnel, description of computer hardware and software resources and expected time
            frames for plan review which meet the requirements of R.72-305B(2) and R.72-305M,
            and
        (e) Name of the Certified Plan Reviewer.
    (2) Requests for delegation of inspection during construction and of maintenance inspection
         responsibility shall include the following information:
        (a) Inspection and referral procedures,
        (b) Time frames for inspection of active land disturbing activities,
        (c) Time frames for inspection of completed stormwater management structures,
        (d) Inspection forms,
        (e) Description of adequate personnel allocations including qualifications and experience of
            personnel,
        (f) Name of Certified Construction Inspector, and
        (g) Procedures and time frames for processing complaints.
    (3) Request for delegation of enforcement responsibility shall include the following
         information:
        (a) Procedure for processing violations.
        (b) Description of personnel allocations involved in enforcement actions including
            qualifications and experience of personnel.
        (c) Description of citizen complaint process.
        (d) Description of applicant appeal process.
    (4) Requests for delegation of education and training responsibility shall include the following
         information:
        (a) Types of educational and training activities to be accomplished,
        (b) Frequency of activities,
        (c) Names and backgrounds of those individuals conducting the training, and
        (d) Procedures and timetables to notify the Commission of educational programs.

E. Requests for delegation of program elements must be submitted by local governments or
   conservation districts within six months of the effective date of these regulations, and by
   January first of subsequent years if delegation is desired at a future date. The Commission
   shall approve, approve with modification, or deny such a request on Or before April first of the
   year for which delegation is sought.
F. The S.C. Coastal Council shall assist the Commission in reviewing all requests for delegation
   of program elements from local governments in the counties of Beaufort, Berkeley, Charleston,
   Colleton, Dorchester, Georgetown, Jasper and Horry to ensure that the delegated program
   elements are consistent with the Coastal Zone Management Program. The S.C. Coastal
   Council, in coordination with the Commission, will serve as the implementing agency for these
   regulations in the jurisdictions of the local governments which do not seek delegation of









    program elements in the counties of Beaufort, Berkeley, Charleston, Colleton, Dorchester,
    Georgetown, Horry and Jasper.
G. If the Commission denies a request for delegation, the local government or conservation district
    may appeal the decision of the Commission by requesting an administrative hearing within 30
    days after receipt of written notification as described in R.72-313.
H. Delegation of authority for one or more program elements may be granted for a maximum time
    frame of three years. After three years a new application to the Commission must be made.
    Over the time frame for which delegation has been granted, the Commission will evaluate
    delegation implementation, coordinate review findings with the delegated authority, and
    determine if the new delegation should be granted.
I.  A delegated authority may sub-delegate program elements, with Commission concurrence, to, a
    conservation district, regional council of government or other responsible entity or agency.
J.  The Commission shall maintain, and make available upon request, a listing of the current status
    of delegation for all jurisdictions within the State.
K. Any local government that has adopted a stormwater management and/or sediment control
    program prior to the effective date of these regulations may request approval of any, or all,
    components of its existing program within six months of the effective date of these regulations.
     The Commission shall give priority to the approval, approval with modification or disapproval
    of these requests. The local government shall continue to administer the existing program
    during the review process by the Commission. Efficiency and effectiveness of the existing
    program shall be considered in the review process.
    (1) The Commission shall approve a delegation request upon determining that the
         implementation of the existing program by the local government equal or exceed the
         requirements, criteria, standards and specifications of these regulations.
    (2) If the request for delegation of program components are disapproved, the local government
        may appeal the decision of the Commission by requesting an administrative hearing within
        30 days after receiving written notification of the disapproval as described in R.72-313.

L.; If the Commission determines that a delegated program falls below acceptable standards
    established by these regulations, delegation may be suspended. During a period of suspension,
    the Commission shall be responsible for implementation of the program element. The
    Commission shall collect fees based on R.72-306 for use when the delegation is suspended.
    The following actions may be cause for suspension if they represent a continuing pattern of
    action or in-action:
    (1) Failure of implementing agency with the responsibility for enforcement to issue a violation
        in the event of off-site sediment or stormwater damage resulting from non-compliance with
        the approved plan.
    (2) Failure of the implementing agency to assess a fine when a violation has not been corrected
        within the specified time frame.
    (3) Failure of the implementing agency to stop work when a violation has resulted in off-site
       damages.
    (4) Failure of the implementing agency to force compliance with an approved plan.
   (5) Failure of the delegated program to comply with the provisions of its application for
        delegation.

M. Upon suspension of the delegation, the implementing agency has the right to file an appeal
   within 30 days of the notification of the suspension following procedures listed in R.72-313.
    The Commission shall administer the program during the appeal process.








72-305. Permit Application and Approval Process.
   A. After the effective date of these regulations, unless a particular activity is exempted by these
       regulations, a person may not undertake a land disturbing activity without an approved
       stormwater management and sediment control plan from the appropriate plan approval agency
       that is consistent with the following items:
       (1) Chapter 14, Title 48, South Carolina Code, relating to erosion and sediment control and
           stormwater management, and
       (2) These regulations, or duly adopted county or municipal ordinances or programs that are
           adopted as a part of the delegation process and set minimum standards equivalent to these
           regulations.

   B. Specific requirements of the permit application and approval process are generally based on the
       extent of the land disturbing activity. The permit application and approval procedure is as
       follows:
       (1) For land disturbing activities involving two (2) acres or less of actual land disturbance
           which are not part of a larger common plan of development or sale, the person responsible
           for the land disturbing activity shall submit a simplified stormwater management and
           sediment control plan meeting the requirements of R.72-307H. This plan does not require
           approval by the implementing agency and does not require preparation or certification by
           the designers specified in R.72-305H and R.72-305I.
       (2) For land disturbing activities involving more than two (2) acres and less than five (5) acres
            of actual land disturbance which are not part of a larger common plan of development or
            sale, a simplified permitting and approval process will be used meeting the requirements
           of R.72-307I. These activities are required to utilize Best Management Practices (BMP's)
           to control erosion and sediment and to utilize appropriate measures to control the quantity
           of stormwater runoff. Plans and specifications for these activities will be prepared by the
           designers cited in R.72-305H and R.72-305I. The implementing agency will review these
           submissions within a ten working day period. If action is not taken by the end of the
           review period, the plan will be considered approved..
      (3) For land disturbing activities disturbing more than five (5) acres, the requirements of
           R.72-305 and R.72-307 will apply. However, the use of measures other than ponds to
           achieve water quality improvement are recommended on sites containing less than ten (10)
           disturbed acres. Plans and specifications for these activities will be prepared by the
           designers specified in R.72-305H or R.72-305I.
      (4) These requirements may be modified on a case-by-case basis to address specific stormwater
          quantity or quality problems or to meet S.C. Coastal Council or other regulatory
          requirements. Requests for waivers or variances from these requirements will be made in
          accordance with the provisions of R.72-302.
      (5) When the land disturbing activity consists of the construction of a pond, lake or reservoir
          which is singly built and not part of a permitted land disturbing activity, the following
          procedures will apply:
           (a) A stormwater management and sediment control plan will not be required if the pond,
              lake or reservoir is permitted under the S.C. Dams and Reservoirs Safety Act or has
              received a Certificate of Exemption from the S.C. Dams and Reservoirs Safety Act.
              Best management practices should be used to minimize the impact of erosion and
              sediment.
          (b) A stormwater management and sediment control plan will be required for the
               construction of all ponds, lakes or reservoirs not meeting the conditions in









             R.72-305B(5)(a) that otherwise meet the size requirements for stormwater
             management and sediment control plan approval.

C. A stormwater management and sediment control plan or an application for a waiver shall be
    submitted to the appropriate plan approval agency by the person responsible for the land
    disturbing activity for review and approval for a land disturbing activity, unless otherwise
    exempted, The stormwater management and sediment control plan shall contain supporting
    computations, drawings, and sufficient information describing the manner, location, and type of
    measures in which stormwater runoff will be managed from the entire land disturbing activity.
    The appropriate plan approval agency shall review the plan to determine compliance with the
    requirements of these regulations prior to approval. ï¿½ The approved stormwater management
    and sediment control plan shall serve as the basis for water quantity and water quality control
    on all subsequent construction.
D. All stormwater management and sediment control plans submitted for approval shall contain
    certification by the person responsible for the land disturbing activity that the land disturbing
    activity will be accomplished pursuant to the approved plan and that responsible personnel will
    be assigned to the project.
E. All stormwater management and sediment control plans shall contain certification by the person
    responsible for the land disturbing activity of the right of the: Commission or implementing
    agency to conduct on-site inspections.
F. The stormwater and sediment management plan shall not be considered approved without the
    inclusion of an approval stamp with a signature and date on the plans by the appropriate plan
    approval agency. The stamp of approval on the plans is solely an acknowledgement of
    satisfactory compliance with the requirements of these regulations. The approval stamp does
    not constitute a representation or warranty to the applicant or any other person concerning the
    safety, appropriateness :of effectiveness of any provision, or omission from the stormwater and
    sediment plan.
G. When the local conservation district is not the plan approval agency, the conservation district
    may request to review and comment on stormwater management and sediment control plans.
    Failure of the conservation district to provide comments by the date specified by the local
    implementing agency will not delay the approval of the stormwater management and sediment
    control plans by the implementing agency.
H.  All stormwater management and sediment control plans submitted to the appropriate plan
    approval agency for approval shall be certified by the designer. The following disciplines may
    certify and stamp/seal plans as allowed by their respective licensing act and regulations:
    (1) Registered professional engineers as described in Title 40, Chapter 22.
    (2) Registered landscape architects as described in Title 40, Chapter 28, Section 10, item (b). .
    (3) Tier B land surveyors as described in Title 40, Chapter 22.

I.  Pursuant to Title 40, Chapter 22, Section 460, stormwater management and sediment control
    plans may be prepared by employees of the federal government and submitted by the person
    responsible for the land disturbing activity to the appropriate plan approval agency for
    approval.
J. These regulations do not prohibit other disciplines or Certified.Professionals, including, but not
    limited to, Certified Professional Erosion and Sediment Control Specialists, which have
    appropriate background and experience from taking active roles in the preparation of the plan
    and design process. All plans and specifications submitted to the appropriate plan approval
    agency for approval shall be stamped/sealed by those listed in R.72-305H or prepared by
    employees of the federal government under R.72-305I.








    K. Approved plans remain valid for 5 years from the date of an approval. Extensions or renewals
        of the plan approvals will be granted by the plan approval agency upon written request by the
        person responsible for the land disturbing activity,
    L. Approvals of land disturbing activities which were approved prior to the effective date of these
        regulations shall remain in effect for the original term of the approval. For land disturbing
        activities which were not initiated during the original term of approval, the person responsible
        for the land disturbing activity shall resubmit the stormwater management and sediment control
        plan to the appropriate plan approval agency for review and approval subject to the
        requirements of these regulations.
    M. Upon receipt of a completed application for sediment and stormwater management, the
        appropriate plan approval agency shall accomplish its review and have either the approval or
        review comments transmitted to the applicant within 20 working days. If notice is not given to
        the applicant or if action is not taken by the end of the 20 working day period, the applicants
        plan will be considered approved.
    N. One year after the effective date of Chapter 14, Title 48 of the Code of Laws of South
        Carolina, a federal agency or facility may not undertake a land disturbing activity unless the
        agency has submitted a stormwater management and sediment control plan for the specific
        activity to the Commission and the plan has been approved. In lieu of submitting individual
        plans for approval, the federal agency or facility may submit an application for a general permit
        to the Commission for approval.
    O. A local government or special purpose or public service district may request a general permit
        for its regulated activities from the Commission. If a local government's or special purpose or
       public service district's request is approved, individual stormwater management and sediment
        control plans for regulated land disturbing activities will not be required.

72-306. Fees.
   A. The fees associated with the plan review and approval process inspection and enforcement shall
       be set by the implementing agency. If permit fees are established, they shall be established in
       accordance with the following items:
       (1) Delegation of program elements will'depend, to a large extent, on funding and personnel
           commitments. If the delegated jurisdiction has a source of funding that is provided through
           local revenues, then the implementation of the delegated component will not necessitate the
           imposition of a permit fee to cover the cost of the delegated program component.
       (2) In the event that one component of an overall stormwater management and sediment
           control program is not funded through the use of general or special funds, a non-refundable
           permit fee may be collected at the time that the stormwater management and sediment
           control plan or application for waiver or variance is submitted'or approved. The permit fee
           will provide for the unfunded costs of plan review, administration and management of the
           permitting office, construction review, maintenance inspection, and education and training.
            The plan review or permit approval agency shall be responsible for the collection of the
           permit fee. Unless all program elements in a county or municipality have been delegated to
           a single agency, the funds collected not supporting the plan review function shall be
           distributed to the appropriate agencies.
       (3) The number of needed personnel and the direct and indirect expenses associated with those
           personnel shall be developed by the agencies requesting delegation in a. specific
           jurisdiction. Those expenses will then form the basis for determining unit plan approval
           costs by the local government.









   B. Where the Commission is the implementing agency, the Commission may assess a fee not to
        exceed $50.00 per disturbed acre up to a maximum of $1000.00. No fee will be charged for
        land disturbing activities which disturb two acres or less. The Commission may also charge a
       fee not to exceed $100.00 to review an application for a waiver or variance from the
        requirements of these regulations. No fee will be charged for extensions or renewal of plan
       approval unless there are significant changes to the plans.
    C. A maintenance fee may be required on approvals granted for stormwater management
       structures that will be maintained by a local government.

72-307. Specific Design Criteria, Minimum Standards and Specifications.
   A. General submission requirements for all projects requiring stormwater management and
       sediment control plan approval will include the following information as applicable:
       (1) A standard application form,
       (2) A vicinity map indicating north arrow, scale, and other information necessary to locate the
           property or tax parcel,
       (3) A plan at an appropriate scale accompanied by a design report and indicating at least:
           (a) The location of the land disturbing activity shown on a USGS 7.5 minute topographic
               map or copy.
           (b) The existing and proposed topography, overlayed on a current plat showing existing
               and proposed contours as required by the implementing agency. The plat and
               topographic map should conform to provisions of Article 4, Regulations 400-490.
           (c) The proposed grading and earth disturbance including:
               1. Surface area involved; and
               2. Limits of grading including limitation of mass clearing and grading whenever
                   possible.
           (d) Stormwater management and stormwater drainage computations, including:
               1. Pre- and post-development velocities, peak rates of discharge, and inflow and
                   outflow hydrographs of stormwater runoff at all existing and proposed points of
                   discharge from the site,
               2. Site conditions around points of all surface water discharge including vegetation and
                   method of flow conveyance from the land disturbing activity, and
               3. Design details for structural controls.
           (e) Erosion and sediment control provisions, including:
               1. Provisions to preserve top soil and limit disturbance;
              '2. Details of site grading; and
               3. Design details for structural controls which includes diversions and swales.
       (4) Federal Emergency Management Agency flood maps and federal and State wetland maps,
           where appropriate.
       (5) The appropriate plan approval agency shall require that plans and design reports be sealed
            by a qualified design professional that the plans have been designed in accordance with
            approved sediment and stormwater ordinances and programs, regulations, standards and
           criteria.
       (6) Additional information necessary for a complete project review may be required by the
           appropriate plan approval agency as deemed appropriate. This additional information may
           include items such as public sewers, water lines, septic fields, wells, etc.

   B.  Specific requirements for the erosion and sediment control portion of the stormwater
       management and sediment control plan approval process include, but are not limited to, the









    following items. The appropriate plan approval agency may modify the following items for a
    specific project or type of project.
    (1) All plans shall include details and descriptions of temporary and permanent erosion and
        sediment control measures and other protective measures shown on the stormwater and
        sediment management plan. Procedures in a stormwater and sediment management plan
        shall provide that all sediment and erosion controls are inspected at least once every seven
        calendar day and after any storm event of greater than 0.5 inches of precipitation during
        any 24-hour period.
    (2) Specifications for a sequence of construction operations shall be contained on all plans
        describing the relationship between the implementation and maintenance of sediment
        controls, including permanent and temporary stabilization and the various stages or phases
        of earth disturbance and construction. The specifications for the sequence of construction
        shall, at a minimum, include the following activities:
        (a) Clearing and grubbing for those areas necessary for installation of perimeter controls;
        (b) Installation of sediment basins and traps;
        (c) Construction or perimeter controls;
        (d) Remaining clearing and grubbing;
        (e) Road grading;
        (f) Grading for the remainder of the site;
        (g) Utility installation and whether stormdrains will be used or blocked until after
            completion of construction;
        (h) Final grading, landscaping, or stabilization; and
        (i) Removal of sediment controls.
    Changes to the sequence of construction operations may be modified by the person conducting
    the land disturbing activity or their representative and do not constitute a violation unless
   measures to control stormwater runoff and sediment are not utilized.
    (3) The plans shall contain a description of the predominant soil types on the site, as described
        by the appropriate soil survey information available through the Commission or the local
       Conservation District.
    (4) When work in a live waterway is performed, precautions shall be taken to minimize
        encroachment, control sediment transport and stabilize the work area to the greatest extent
        possible during construction.
    (5) Vehicle tracking of sediments from land disturbing activities onto paved public roads
        carrying significant amounts of traffic (ADT of 25 vehicles/day or greater) shall be
        minimized.
C. Specific requirements for the permanent stormwater management portion of the stormwater
   management and sediment control plan approval process include, but are not limited to, the
    following items. The appropriate plan approval agency may modify the following items for a
   specific project or type or project.
    (1) It is the overall goal of the Commission to address stormwater management on a watershed
       basis to provide a cost effective water quantity and water quality solution to the specific
        watershed problems. These regulations will provide general design requirements that must
       be adhered to in the absence of Designated Watershed specific criteria.
    (2) All hydrologic computations shall be accomplished using a volume based hydrograph
       method acceptable to the Commission. The storm duration for computational purposes for
       this method shall be the 24-hour rainfall event, SCS distribution with a 0.1 hour burst
       duration time increment. The rational and/or modified rational methods are acceptable for
        sizing individual culverts or stormdrains that are not part of a pipe network or system and









    do not have a contributing drainage area greater than 20 AC.  The storm duration for
    computational purposes for this method shall be equal to the time of concentration of the
    contributing drainage area or a minimum of 0.1 hours, whichever is less.
(3) Stormwater management requirements for a specific project shall be based on the entire
    area to be developed, or if phased, the initial submittal shall control that area proposed in
    the initial phase and establish a procedure and obligation for total site control.
(4) Water quantity control is an integral component of overall stormwater management.  The
    following design criteria for flow control is established for water quantity control purposes,
    unless a waiver is granted based on a case-by-case basis:
    (a) Post-development peak discharge rates shall not exceed pre-development discharge
        rates for the 2- and 10- year frequency 24-hour duration storm event. Implementing
        agencies may utilize a less frequent storm event (e.g. 25-year, 24-hour) to address
        existing or future stormwater quantity or quality problems.
    (b) Discharge velocities shall be reduced to provide a nonerosive velocity flow from a
        structure, channel, or other control measure or the velocity of the 10-year, 24-hour
        storm runoff in the receiving waterway prior to the land disturbing activity, whichever
        is greater.
    (c) Watersheds, other than Designated Watersheds, that have well documented water
        quantity problems may have more stringent, or modified, design criteria determined by
        the local government that is responsive to the specific needs of that watershed.
(5) Water quality control is also an integral component of stormwater management. The
   following design criteria is established for water quality protection unless a waiver or
   variance is granted on a case-by-case basis.
    (a) When ponds are used for water quality protection, the ponds shall be designed as both
       quantity and quality control structures. Sediment storage volume shall be calculated
       considering the clean out and maintenance schedules specified by the designer during
       the land disturbing activity. Sediment storage volumes may be predicted by the
       Universal Soil Loss Equation or methods acceptable to the Commission.
   (b) Stormwater runoff and drain to  a single outlet from land disturbing activities which
       disturb ten acres or more shall be controlled during the land disturbing activity by a
       sediment basin where sufficient space and other factors allow these controls to be used
       until the final inspection. The sediment basin shall be designed and constructed to
       accommodate the anticipated sediment loading from the land-disturbing activity and
       meet a removal efficiency of 80 percent suspended solids or 0.5 ML/L peak settable
       solids concentration, whichever is less. The outfall device or system design shall take
       into account the total drainage area flowing through the disturbed area to be served by
       the basin.
   (c) Other practices may be acceptable to the appropriate plan approval agency if they
       achieve an equivalent removal efficiency of 80 percent for suspended solids or 0.5
       ML/L peak settable solids concentration, which ever is less. The efficiency shall be
       calculated for disturbed conditions for the 10-year 24-hour design event.
   (d) Permanent water quality ponds having a permanentspool shall be designed to store and
       release the first ï¿½h inch of runoff from the site over a 24 hour period. The storage
       volume shall be designed to accommodate, at least, 'A inch of runoff from the entire
       site.
   (e) Permanent water quality ponds, not having a permanent pool, shall be designed to
       release the first inch of runoff from the site over a 24-hour period.
   (f) Permanent infiltration practices, when used, shall be designed to accept, at a minimum,
       the first inch of runoff from all impervious areas.









    (g) For activities in the eight coastal counties of Beaufort, Berkeley, Charleston, Colleton,
        Dorchester, Georgetown, Jasper and Horry, additional water quality requirements may
        be imposed to comply with the S.C. Coastal Council Stormwater Management
        Guidelines. If conflicting requirements exist for activities in the eight coastal counties,
        the S.C. Coastal Council guidelines will apply.
(6) Where ponds are the proposed method of control, the person responsible for. the land
    disturbing activity shall submit to the approving agency, when required, an analysis of the
    impacts of stormwater flows downstream in the watershed for the 10- and 100-year
    frequency storm event. The analysis shall include hydrologic and hydraulic calculations
    necessary to determine the impact of hydrograph timing modifications of the proposed land
    disturbing activity, with and without the pond. The results of the analysis will determine
    the need to modify the pond design or to eliminate the pond requirement. Lacking a
    clearly defined downstream point of constriction, the downstream impacts shall be
    established, with the concurrence of the implementing
(7) Where existing wetlands are intended as a component of an overall stormwater
    management system, the approved stormwater management and sediment control plan shall
    not be implemented until all necessary federal and state permits have been-obtained.
(8) Designs shall be in accordance with standards developed or approved by the Commission.
(9) Ease of maintenance must be considered as a site design component. Access to the
    stormwater management structure must be provided.
(10) A clear statement of defined maintenance responsibility shall be established during the
     plan review and approval process. 
(11) Infiltration practices have certain limitations on their use on certain sites. These
     limitations include the following items:
    (a) Areas draining to these practices must be stabilized and vegetative filters established
        prior to runoff entering the system. Infiltration practices shall not be used if a
        suspended solids filter system does not accompany the practice. If vegetation is the
        intended filter, there shall be, at least a 20 foot-length of vegetative filter prior to
        stormwater runoff entering the infiltration practice;.
    (b) The bottom of the infiltration practice shall be at least 0.5 feet above the seasonal high
        water table, whether perched or regional, determined by direct piezometer
       measurements which can be demonstrated to be representative of the maximum height
        of the water table on an annual basis during years of normal precipitation, or by the
        depth in the soil at which mottling first occurs;
    (c) The infiltration practice shall be designed to completely drain of water within 72 hours;
    (d) Soils must have adequate permeability to allow water to infiltrate. Infiltration practices
        are limited to soils having an infiltration rate of least 0.30 inches per hour. Initial
       consideration will be based on a review of the appropriate soil survey, and the survey
       may serve as a basis for rejection. On-site soil borings and textural classifications must
       be accomplished to verify the actual site and seasonal high water table conditions when
        infiltration is to be utilized;
   (e) Infiltration practices greater than three feet deep shall be located at least 10 feet from
       basement walls;
   (f) Infiltration practices designed to handle runoff from impervious parking areas shall be a
       minimum of 150 feet from any public or private water supply well;
   (g) The design of an infiltration practice shall provide an overflow system with measures to
       provide a non-erosive velocity of flow along its length and at the outfall;









        (h) The slope of the bottom of the infiltration practice shall not exceed five percent. Also,
            the practice shall not be installed in fill material as piping along the fill/natural ground
            interface may cause slope failure;
        (i) An infiltration practice shall not be installed on or atop a slope whose natural angle of
            incline exceeds 20 percent.
        (j) Clean outs will be provided at a minimum, every 100 feet along the infiltration practice
            to allow for access and maintenance.
    (12) A regional approach to stormwater management is an acceptable alternative to site
          specific requirements and is encouraged.

D. All stormwater management and sediment control practices shall be designed, constructed and
    maintained with consideration for the proper control of mosquitoes and other vectors. Practices
    may include, but are not limited to:
    (1) The bottom of retention and detention ponds should be graded and have a slope not less
        than 0.5 percent.
    (2) There should be no depressions in a normally dry detention facility where water might
        pocket when the water level is receding.
    (3) Normally dry detention systems and swales should be designed to drain within three (3)
        days.
    (4) An aquatic weed control program should be utilized in permanently wet structures to
        prevent an overgrowth of vegetation in the pond. Manual harvesting is preferred.
    (5) Fish may be stocked in permanently wet retention and detention ponds.
    (6) Normally dry swales and detention pond bottoms should be constructed with a gravel
        blanket or other measure to minimize the creation of tire ruts during maintenance activities.

E. A stormwater management and sediment control plan shall be filed for a residential
    development and the buildings constructed within, regardless of the phasing of construction.
    (1) In applying the stormwater management and sediment control criteria, in R.72-307,
       individual lots in a residential subdivision development shall not be considered to be
       separate land disturbing activities and shall not require individual permits. Instead, the
       residential subdivision development, as a whole, shall be considered to be a single land
       disturbing activity. Hydrologic parameters that reflect the ultimate subdivision
       development shall be used in all engineering calculations.
   (2) If individual lots or sections in a residential subdivision are being developed by different
       property owners, all land-disturbing activities related to the residential subdivision shall be
       covered by the approved stormwater management and sediment control plan for the
       residential subdivision. Individual lot owners or developers may sign a certificate of
       compliance that all activities on that lot will be carried out in accordance with the approved
       stormwater management and sediment control plan for the residential subdivision. Failure
       to provide this certification will result in owners or developers of individual lots developing
       a stormwater management and sediment control plan meeting the requirements of R.72-
       307.
   (3) Residential subdivisions which were approved prior to the effective date of these
       regulations are exempt from these requirements. Development of new phases of existing
       subdivisions which were not previously approved shall comply with the provisions of these
       regulations.









F. Risk analysis may be used to justify a design storm event other than prescribed or to show that
    rate and volume control is detrimental to the hydrologic response of the basin and therefore,
    should not be required for a particular site.
    (1) A complete watershed hydrologic/hydraulic analysis must be done using a complete
        model/procedure acceptable to the implementing agency. The level of detail of data
        required is as follows:
        (a) Watershed designation on the 7.5 minute topo map exploded to a minimum of 1" =
            400'.
        (b) Inclusion of design and performance data to evaluate the effects of any structures which
            effect discharge. Examples may be ponds or lakes, road crossings acting as attenuation
            structures and there may be others which must be taken into account.
        (c) Land use data shall be taken from the most recent aerial photograph and field checked
            and updated.
        (d) The water surface profile shall be plotted for the conditions of pre- and post-
            development for the 10-, and 100-year 24-hour storm.
        (e) Elevations of any structure potentially damaged by resultant flow shall also be shown.
    (2) Based on the results of this type of evaluation, the certified plan reviewer representing the
        implementing agency shall review and evaluate the proposed regulation waiver or change.

    G.      The general permit application for use by federal, local governments, or special
    purpose or public service districts shall contain, as a minimum, standard plans and
    specifications for stormwater management and erosion and sediment control; methods used to
    calculate stormwater runoff, soil loss and control method performance; staff assigned to
    monitor land disturbing activities and procedures to handle complaints for off-site property
    owners and jurisdictions. This general permit will be valid for a period of three years and will
    be subject to the same review criteria by the Commission as that of the delegated program
    elements.
    The use of the general permit classification does not relinquish a land disturbing activity from
    the requirements of these Regulations. Rather, the general permit precludes that activity from
    the necessity of a specific plan review for each individual project.
    Approval of a general permit does not relieve any agency from the conditions that are part of
    the general permit approval regarding the implementation of control practices as required by
    the general permit. Failure to implement control practices pursuant to conditions included in
    the general permit may result in the revocation of the general permit and the requirement of the
    submission of individual plans for each activity.
H. The stormwater management and sediment control plan required for land disturbing activities of
    two (2) acres or less which are not part of a larger common plan of development or sale shall
    contain the following information, as applicable:
   (1) An anticipated starting and completion date of the various stages of land disturbing
       activities and the expected date the final stabilization will be completed;
   (2) A narrative description of the stormwater management and sediment control plan to be
       used during land disturbing activities;
   (3) General description of topographic and soil conditions of the tract from the local soil and
       water conservation district;
   (4) A general description of adjacent property and a description of existing structures,
       buildings, and other fixed improvements located on surrounding properties;








    (5) A sketched plan (engineer's, Tier B surveyor's or landscape architect's seal not required)
        to accompany the narrative which shall contain:
        (a) A site location drawing of the proposed project, indicating the location of the proposed
            project in relation to roadways, jurisdictional boundaries, streams and rivers;
        (b) The boundary lines of the site on which the work is to be performed;
        (c) A topographic map of the site if required by the implementing agency;
        (d) The location of temporary and permanent vegetative and structural stormwater
            management and sediment control measures.
    (6) Stormwater management and sediment control plans shall contain certification by the
        person responsible for the land disturbing activity that the land disturbing activity will be
        accomplished pursuant to the plan.
    (7) All stormwater management and sediment control plans shall contain certification by the
        person responsible'for the land disturbing activity of the right of the Commission or
        implementing agency to conduct on-site inspections.
        The requirements contained above may be indicated on one plan sheet.
I.  The stormwater management and sediment control plan for land disturbing activities of greater
   than two (2) acres but less than five (5) acres which are not part of a lager common plan of
   development or sale shall contain the following information, as applicable:
   (1) An abbreviated application form;
   (2) A vicinity map sufficient to locate the site and to show the relationship of the site to its
       general surroundings at a scale of not smaller than one (1) inch to one (1) mile.
   (3) The site drawn to a scale of not smaller than one (1) inch to 200 feet, showing:
       (a) The boundary lines of the site on which the work is to be performed, including the
           approximate acreage of the site;
       (b) Existing contours and proposed contours as required by the implementing agency;
       (c) Proposed physical improvements on the site,'including present development and future
           utilization if future development is planned;
       (d) A plan for temporary and permanent vegetative and structural erosion and sediment
           control measures which specify the erosion and sediment control measures to be used
           during all phases of the land disturbing activity and a description of their proposed
           operation;
       (e) Provisions for stormwater runoff control during the land disturbing activity and during
           the life of the facility, including a time schedule and sequence of operations indicating
           the anticipated starting and completion dates of each phase and meeting the following
           requirements:
           1.      Post-development peak discharge rates shall not exceed pre-development
               discharge rates for the 2- and 10- year frequency 24-hour duration storm event.
               Implementing agencies may utilize a less frequent storm event (e.g. 25-year, 24-
               hour) to address existing or future stormwater quantity or quality problems.
          2.      Discharge velocities shall be reduced to provide a nonerosive velocity flow
               from a structure, channel, or other control measure or the velocity of the 10-year,
              24-hour storm runoff in the receiving waterway prior to the land disturbing
              activity, whichever is greater.
      (f) A complete and adequate grading plan for borrow pits and material processing facilities
          where applicable, including restoration and revegetation measures;
      (g) A general description of the predominant soil types on the site;
      (h) A description of the maintenance program for stormwater management and sediment
          control facilities including inspection programs.








       (4) All stormwater management and sediment control plans submitted for approval shall
           contain certification by the person responsible for the land disturbing activity that the land
           disturbing activity will be accomplished pursuant to the approved plan.
       (5) All stormwater management and sediment control plans shall contain certification by the
           person responsible for the land disturbing activity of the right of the Commission or
           implementing agency to conduct on-site inspections.
       (6) All stormwater management and sediment control plans submitted to the appropriate plan
           approval agency for approval shall be certified by the designer. The following disciplines
           may certify and stamp/seal plans as allowed by their respective licensing act and
           regulations:
           (a) Registered professional engineers as described in Title 40, Chapter 22.
           (b) Registered landscape architects as describe in Title 40, Chapter 28, Section 10,
               item (b).
           (c) Tier B land surveyors as described in Title 40, Chapter 22.
       (7) Pursuant to Title 40, Chapter 22, Section 460, stormwater management and sediment
           control plans may be prepared by employees of the federal government and submitted by
          the person responsible for;the land disturbing activity to the appropriate plan approval
          agency for approval.

72-308. Maintenance Requirements and Off-Site Damage Correction.
  A. The Commission will provide technical assistance to local governments who choose to
       assume the maintenance responsibility for stormwater management structures on, at least,
       residential lands.
  B. The person responsible for maintenance shall perform or cause to be performed preventive
      maintenance of all completed stormwater management practices to ensure proper functioning.
      The responsible inspection agency shall ensure preventive maintenance through inspection of all
      stormwater management practices.
  C. Inspection reports shall be maintained by the responsible inspection agency on all detention and
      retention structures and shall include the following items (as applicable):
      (1) The date of inspection;
      (2) The name of the inspector;
      (3) The condition of (if applicable):
          (a) Vegetation,
          (b) Fences,
          (c) Spillways,
          (d) Embankments,
          (e) Reservoir area,
          (f) Outlet channels,
          (g) Underground drainage,
          (h) Sediment load, or
          (i) Other items which could effect the proper function of the structure.
      (4) Description of needed maintenance.

  D. Responsible inspection agencies shall provide procedures to ensure that deficiencies indicated
     by inspections are rectified. The procedures shall include the following:
     (1) Notification to the person responsible for maintenance of deficiencies including a time
         frame for repairs;









        (2) Subsequent inspection to ensure completion of repairs; and
        (3) Effective enforcement procedures or procedures to refer projects to the Commission if
            repairs are not undertaken or are not done properly.

    E.  The following criteria shall be used by the appropriate implementing agency in evaluating and
        for correcting off-site damages resulting from the land disturbing activity:
        (1) Determine the extent of damage by sediment resulting from non-compliance with the
            approved stormwater management and sediment control plan,
        (2) Determine the classification of the impaired waterbody, if any,
        (3) Determine the impact and severity of the damage resulting from non-compliance with the
            approved stormwater management and sediment control plan,
        (4) Develop an agreement with landowners for cleanup and corrections, including a schedule
            of implementation.
        (5) Evaluate the alternatives for correction of the damage and prevention of future damage,
            and
        (6) Failure to implement the agreement in the required schedule will constitute a violation of
           these regulations.

72-309. Criteria For Designated Watersheds.
 The concept of designated watersheds is intended, not only to prevent existing water quantity and
 water quality problems from getting worse, but also to reduce existing flooding problems and to
 improve existing water quality or meet State Water Quality Standards through a reduction of the
 impacts of NPS pollution in selected watersheds. Further, the designation of watersheds under this
 section may also be used to protect watersheds which do not currently have significant water quality
 or quantity problems, but which require protection in order to avoid or mitigate the occurrence of
 future problems which might impair current or protected multiple water uses or important water
 resources within the watershed. Criteria is established for designated watersheds and these criteria
 will depend on whether the specific problems of the watershed are water quantity or water quality
 oriented. Water quantity and water quality concerns will be considered in all designated watersheds,
 but the overall emphasis for each designated watershed will depend on its existing and future water
 quality and quantity issues as well as consideration of the multiple offstream and instream water uses
 within the watershed.
   A.  To initiate consideration of a watershed for Designated Watershed status, a watershed shall be
   recommended by a local government or combinations of local governments through the passage of
   a local ordinance to the Commission. Upon recommendation to the Commission, the Commission
   shall publish the request in the State Register and contact all involved agencies at the local and state
   level within 30 days after receipt of the designation request and their input received prior to any
   consideration of the designation is made.
   B. Included with the recommendation of a watershed for Designated Watershed status to the
   Commission shall be an identification of the specific problems that exist in the watershed so that the
  pursuit of a watershed study is warranted. Designation as a Designated Watershed requires
  approval by the Commission, the South Carolina Water Resources Commission and the South
  Carolina Department of Health and Environmental Control. A significant water quantity or water
  quality problem must exist that would support this designation. Also, inclusion of a watershed as a
  Designated Watershed will necessitate a public hearing process. The process of designating a
  watershed shall be based on the following information:








 (1) An estimate of the potential for land disturbing activities to be initiated in the basin which
     would be regulated under this regulation. This estimate could utilize historical and projected
     population growth, land use data, and other such- appropriate measures to estimate the nonpoint
     source pollution contribution or stormwater runoff which could be reduced or avoided,
 (2) An inventory of the offstream and instream water uses in the watershed to quantify and
     characterize the benefits associated with reducing current or avoiding future water resources
     problems in the watershed. These could include water supply intakes, State navigable waters,
     recreational resources, fisheries resources, wetlands, or other such important uses,
 (3) Water quality data, collected through either the statewide water quality inventory, or other
     special studies inclusive of benthic macroinvertebrate data,
 (4) Historical and estimated flood damage and/or estimated flood protection benefits to both private
     and public property in the watershed,
 (5) Status of current or description of proposed State and Federal flood protection and flood plain
     management program(s) and activities in the watershed, and
 (6) Dangers to public health and welfare.

 C. Following an adequate review of the recommendation, staff of the Commission, South Carolina
Water Resources Commission, and the South Carolina Department of Health and Environmental
Control shall meet to review and discuss their decision regarding designation. The staff shall
prepare a statement in support of, or objection to, the proposed designation within 120 days
following receipt of the recommendation by the Commission. The statement shall be voted upon
by the appointed commissioners of each respective agency. Ex-officio members of the South
Carolina Water Resources Commission representing the Land Resources Conservation Commission
and the South Carolina Department of Health and Environmental Control shall abstain from voting
regarding designation at the meeting of the South Carolina Water Resources Commission.
Approval by each of the three agencies shall constitute designation.
D. Upon approval of designation, a Watershed Advisory Committee shall be established to advise
    and provide guidance in the development and conduct of the watershed master plan. The
    Commission, South Carolina Water Resources Commission, and the South Carolina
    Department of Health and Environmental Control will appoint the Watershed Advisory
    Committee which shall include State, District, local government representatives, and also
    representatives of the regulated community within the watershed and other persons which may
    be affected by the plan.
E. The general components contained in the actual watershed study shall be the following items:
    (1) Stormwater quantity or water quality problem identification,
    (2) The overall needs of the watershed including the additional impacts of new land disturbing
        activities,
    (3) Alternative approaches to address the existing and future problems,
    (4) A selected approach that includes the overall costs and benefits,
    (5) An economic impact analysis of the selected approach,.-
    (6) Schedule for implementation,
    (7) Funding sources that are available for the actual implementation of study
       recommendations, and
    (8) A public hearing prior to final Commission, S.C. Water Resources Commission and S.C.
       Department of Health and Environmental Control approval of the watershed study.
F. The following goals are to be obtained through the implementation of the Designated
   Watershed program:
   (1) Reduction of existing flooding or water quality impacts,









        (2) Prevention of future flooding or water quality impacts, and
        (3) Minimization of economic and social losses.
   G. Specific plan components of a watershed study shall include, but not be limited to, the
       following items:
        (1) The limits of the watershed.
        (2) An inventory of existing water quality data.
        (3) An inventory of areas having significant natural resource value as defined in existing State
           or local studies as they may be impacted by the construction of location of stormwater
            control structures.
        (4) An inventory of areas of historical and archaeological value identified in existing State or
            local studies as they may be impacted by the construction or location of stormwater control
            structures,
        (5) A map or series of maps of the watershed showing the following information:
            (a) Watershed topography,
            (b) Significant geologic formations,
            (c) Soils information, ,
            (d) Existing land use based on existing zoning,
            (e) Proposed land use based on expected zoning or comprehensive plans,
            (f) Locations where water quality data were obtained.
            (g) Locations of existing flooding problems including floor and corner elevations of
               structures already impacted, and
            (h) 100-year floodplain delineations, water surface profiles, and storm hydrographs at
                selected watershed location.
        (6) An inventory of the existing natural and constructed stormwater management system.
        (7) An inventory of historic flood damage sites, including frequency and damage estimates,

72-310. Criteria For Implementation of a Stormwater Utility.
   The implementation of a stormwater utility will necessitate the development of a local utility
   ordinance or special taxing assessment prior to its implementation, pursuant to Chapter 9, Title 4,
   1976 Code of Laws as amended by Act 114 1991. There are essential components that an ordinance
  must contain to function as a funding mechanism for stormwater management and those components
   shall include, but not be limited to, the following items:
   A. The financing of a stormwater utility with a user charge system must be reasonable and
       equitable so that each user of the stormwater system pays to the extent to which the user
       contributes to the need for the stormwater system, and that the charges bear a substantial
       relationship to the cost of the service. The use of county and municipal taxpayer rolls and
        accounting systems are allowed for the assessment and collection of fees.
   B.. The intent of the utility must be clearly defined regarding program components that are to be
        funded through the utility. Those components may include but not be limited to the following
       activities:
        (1)l    Preparation of comprehensive watershed master plans for stormwater management,
        (2)    Annual inspections of all stormwater management facilities, both public and private,
        (3)    Undertaking regular maintenance, through contracting or other means, of stormwater
           management structures that have been accepted for maintenance.
        (4)    Plan review and inspection of sediment control and stormwater management plans and
            practices, and
        (5)    Retrofitting designated watersheds, through contracting or other means, to reduce
            existing flooding problems or to improve water quality.










   C. The authority for the creation of the stormwater utility and the imposition of charges to finance
       sediment and stormwater activities is conferred in Chapter 14, Title 48, South Carolina Code.
       The application of a stormwater utility by means of a local ordinance or other means shall not
       be deemed a limitation or repeal of any other powers granted by State statute.
   D. The creation of a stormwater utility shall include the following components:
        (1) The boundaries of the utility, such as watersheds or jurisdictional boundaries as identified
           by the local governing body,
        (2) The creation of a management entity,
        (3) Identification of stormwater problems,
        (4) Method for determining utility charges,
        (5) Procedures for investment and reinvestment of funds collected, and
        (6) An appeals or petition process.

    E. As established by local ordinance or special election or petition, the local government shall
        have responsibility for implementing all aspects of the utility including long range planning,
       plan implementation, capital improvements, maintenance of stormwater facilities, determination
        of charges, billing, and hearing of appeals and petitions. The local government also will have
        responsibility for providing staff support for utility implementation.
    F. With the respect to new stormwater management facilities constructed by private developers,
       the local government shall develop criteria for use in determining whether these will be
       maintained by the utility or by the facility owner. Such criteria may include whether the
        facility has been designed primarily to serve residential users and whether it has been designed
       primarily for purposes of stormwater management. In situations where it is determined that
       public maintenance is not preferable, standards shall be developed to ensure that inspection of
       facilities occurs annually and that facilities are maintained as needed.
   G. The use of charges is limited to those purposes for which the utility has been established,
        including but not limited to: planning; acquisition of interests in land including easements;
        design and construction of facilities; maintenance of the stormwater system; billing and
        administration; and water quantity and water quality management, including monitoring,
        surveillance, private maintenance inspection, construction inspection, and other activities which
       are reasonably required.

72-311. Plan Review and Inspector Certification Programs.
    A. The Commission shall require that local governments which request delegation of stormwater
        management and sediment control plan review and approval/disapproval shall have a Certified
        Plan Reviewer representing the implementing agency. Certified Plan Reviewers shall obtain
        certification from the Commission by successfully completing a Commission sponsored or
        approved training program. Exceptions to this requirement are limited to Registered
        Professional Engineers, Registered Landscape Architects and Registered Tier B Land
        Surveyors who can receive initial certification by demonstrating to the Commission a minimum
        of three (3) years experience in stormwater management and sediment control planning and
        design.
        For a period of one year after the effective date of these regulations, local governments may
        receive interim certification for plan reviewers during the period before attendance at a
        Commission sponsored or approved training course by submitting an enrollment form to the
        Commission. Interim certification shall be valid until the scheduled date of attendance.








    B. The Commission shall require that local governments which request delegation of the
        construction and maintenance inspection component of the stormwater management and
        sediment control program shall have a Certified Construction Inspector representing the
        implementing agency. Certified Construction Inspectors shall obtain certification from the
        Commission by successfully completing a Commission sponsored or approved training
        program.
        For a period of one year after the effective date of these regulations, local governments may
        receive interim certification for construction inspectors during the period before attendance at a
        Commission sponsored or approved training course by submitting an enrollment form to the
        Commission. Interim certification shall be valid until the scheduled date of attendance.
    C. Initial certification as a Certified Plan Reviewer or Certified Construction Inspector is good for
        a period of five years. Recertification is contingent on attending and successfully completing a
        Commission sponsored or approved recertification program.  This continuing education
        requirement applies to all Certified Plan Reviewers, including, Registered Engineers,
       Landscape Architects, Tier B Land Surveyors and Construction Inspectors.

72-312. Review and Enforcement Requirements.
   A. Items listed in this section are activities by the Commission in the event the Commission serves
       as the implementing agency.  When the Commission is requested to assist the implementing
       agency, these are suggestions the Commission may submit to the implementing agency.
   B.  The person responsible for the land disturbing activity shall notify the appropriate inspection
       agency before initiation of construction and upon project completion when a final inspection
       will be conducted to ensure compliance with the approved stormwater management and
       sediment control plan.
   C. The person responsible for the land disturbing activity shall, if required by the implementing
       agency during the plan approval process, submit "As Built or Record Document" plans. In
       addition, the person responsible for the land disturbing activity may be required to submit
       written certification from the professional engineer, landscape architect, or Tier B land
       surveyor responsible for the field supervision of the land disturbing activity that the land
       disturbing activity was accomplished according to the approved stormwater management and
       sediment control plan or approved changes.
   D. The responsible inspection agency shall, for inspection purposes, do all of the following items:
       (1) Ensure that the approved stormwater management and sediment control plans are on the
           project site and are complied with;
       (2) Ensure that every active site is inspected for compliance with the approved plan on a
           regular basis;
       (3) Provide the person responsible for the land disturbing activity, a written report after every
           inspection that describes:
          (a) The date and location of the site inspection;
           (b) Whether the approved plan has been properly implemented and maintained;
          (c) Approved plan or practice deficiencies; and
           (d) The action taken.
      (4) Notification of the person responsible for the land disturbing activity in writing when
          violations are observed, describing the:
          (a) Nature of the violation;
          (b) Required corrective action; and
          (c) Time period for violation correction. 










 E. The Commission may investigate complaints or refer any complaint received to the local
     inspection agency if the activity is located in a jurisdiction that has received delegation of
     inspections during construction and maintenance inspections. In conjunction with a referral,
     the Commission may also initiate an on-site investigation after notification of the local
     inspection agency in order to properly evaluate the complaint. The Commission shall make
     recommendations on enforcement action when appropriate, and notify the local implementing
     agency in a timely manner of any recommendations.
 F. The Commission, at its discretion and upon notification to the person responsible for the land
     disturbing activity may visit any site to determine the adequacy of stormwater management and
     sediment control practices. In the event that the Commission conducts site inspection, the
     appropriate inspection agency shall be notified of the inspection. The appropriate inspection
     agency shall establish a time frame to obtain site compliance. This notification shall, in no way
    limit the right to the Commission to take action subsequent to any provision of these regulations
    or Chapter. Formal procedures for interaction between the Commission and the appropriate
    inspection agency on-site inspection and referral will be developed on an individual basis.
G. The appropriate plan approval agency may require a revision to the approved plans as
    necessary due to differing site conditions. The appropriate plan approval agency shall establish
    guidelines to facilitate the processing of revised plans where field conditions necessitate plan
    modification. Where changes to the approved plan are necessary those changes shall be in
    accordance to the following:
    (1) Major changes to approved stormwater management and sediment control plans, such as
        the addition or deletion of a sediment basin, shall be submitted by the applicant to the
        appropriate plan approval agency for review and approval.
    (2) Minor changes to stormwater management and sediment control plans may be made in the
        field review report. The appropriate inspection agency shall develop a list of allowable
        field modifications for use by the construction inspector.

H. Stormwater management construction shall have inspections accomplished as needed.
I.  The agency responsible for construction inspection may, in addition to local enforcement
    options, refer a site violation to the Commission for review.
J.  Referral of a site violation to the Commission may initiate a Commission construction
    inspection of the site to verify site conditions. That construction inspection may result in the
    following actions:
    (1) Notification through appropriate means to the person engaged in a land disturbing activity
        to comply with the approved plan within a specified time frame; and
    (2) Notification of plan inadequacy, with a time frame for the person engaged in a land
        disturbing activity to submit a revised sediment and stormwater plan to the appropriate plan
        approval agency and to receive its approval with respect thereto.
   The Commission shall notify the local inspection agency within five working days of what
   recommendation for enforcement action should be taken on the site.
K. Failure of the person engaged in the land disturbing activity contractor to comply with
    Commission requirements may result in the following actions in addition to other penalties as
   provided in Chapter 14.
    (1) The Commission shall have the power to request the implementing agency to order any
       person violating any provision of Chapter 14 and these regulations to cease and desist from
       any site work activity other than those actions necessary to achieve compliance with any
       administrative order.









    (2) The Commission may request that the appropriate plan approval agency refrain from
        issuing any further building or grading permits to the person having outstanding violations
        until those violations have been remedied.
    (3) The Commission may recommend fines to be levied by the implementing agency.

L.  If the Commission or the implementing agency utilizes "stop work orders" as a part of its
    inspection and enforcement program, the following procedure shall be followed:
    (1) The implementing agency may issue a stop work order if it is found that a land disturbing
       activity is being conducted in violation of this Act or of any regulation adopted or order
       issued pursuant to this Act, that the violation is knowing and willful, and that either:
       (a) Off-site sedimentation resulting from non-compliance with the approved stormwater
           management and sediment control plan has eliminated or severely degraded a use in a
           lake or natural waterway or that such degradation is imminent.
       (b) Off-site sedimentation resulting from non-compliance with the approved stormwater
           management and sediment control plan has caused severe damage to adjacent land.
       (c) The land disturbing activity which requires an approved plan under these regulations
           and is being conducted without the required approved plan.
   (2) The stop work order shall be in writing and shall state what work is to be.stopped and what
       measures are required to abate the violation. The order shall include a statement of the
       findings made by the implementing agency pursuant to (1) of this section and shall list the
       conditions under which work that has been stopped by the order may be resumed. The
       delivery of equipment and materials which does not contribute to the violation may
       continue while the stop work order is in effect. A copy of this section shall be attached to
       the order.
   (3) The stop work order shall be served by the sheriff of the county in which the land
       disturbing activity is being conducted or by some other person duly authorized by law to
       serve process, and shall be served on the person at the site of the land disturbing activity
       who is in operational control of the land disturbing activity. The sheriff or other person
       duly authorized by law to serve process shall post a copy of the stop work order in a
       conspicuous place at the site of the land-disturbing activity. The implementing agency shall
       also deliver a copy of the stop work order to any person that the implementing agency has
       reason to believe may be responsible for the violation.
   (4) The directives of a stop work order become effective upon service of the order.
       Thereafter, any person notified of the stop work order who violates any of the directives set
       out in the order may be assessed a civil penalty as provided in R.72-315. A stop work
       order issued pursuant to this section may be issued for a period not to exceed three calendar
       days.
   (5) The implementing agency shall designate an employee to monitor compliance with the stop
       work order. The name of the employee so designated shall be included in the stop work
      order. The employee so designated shall rescind the stop work order if all the violations
      for which the stop work order are issued are corrected, no other violations have occurred,
      and all measures necessary to abate the violations have been taken. The implementing
      agency shall rescind a stop work order that is issued in error.
  (6) The issuance of a stop work order shall be a final agency decision subject to judicial review
      in the same manner as an order in a contested case pursuant to Title 1, Chapter 23, Section
      380 of the Code of Laws of South Carolina, 1976. The petition for judicial review shall be
      filed in the circuit court of the county in which the land-disturbing activity is being
      conducted.









       (7) The Commission shall file a cause of action to abate the violations which resulted in the
            issuance of a stop work order within three calendar days of the service of the stop work
           order. The cause of action shall include a motion for an ex parte temporary restraining
           order to abate the violation and to effect necessary remedial measures. The resident circuit
           court judge, or any judge assigned to hear the motion for the temporary restraining order,
           shall hear and determine the motion within two days of the filing of the complaint. The
           clerk of circuit court shall accept complaints filed pursuant to this section without the
           payment of fining fees. Filing fees shall be paid to the clerk of circuit court within 30 days
           of the fining of the complaint.

72-313. Hearings and Hearing Procedures.
   A. An administrative hearing is available, following a timely request, to determine the propriety
        of:
        (1) The denial of delegation of a program component.
        (2) A revocation of a delegated program component.
        (3) A denial or revocation of a permit for stormwater management and sediment control.
        (4) A citizen complaint concerning program operation.
        (5) The requirements imposed by the implementing agency for approval of the stormwater
           management and sediment reduction plan.
       (6) The issuance of a notice of violation or non-compliance with the approved stormwater
           management and sediment reduction plan.
       (7) The issuance of fines by an implementing agency.
       (8) The issuance of a stop work order by an implementing agency.
   B. Requests for administrative hearings and appeals may be made to local governments when
       program elements are delegated by the Commission or to the Commission when the
       Commission functions as the implementing agency. In addition, administrative hearings and
       appeals may be held by the Commission regarding decisions or actions of local implementing
       agencies. Procedures for acting on appeals and conducting administrative hearings by local
       implementing agencies will be specified in their request for delegation of program element.
       The Commission procedures for conducting administrative hearings is specified in R.72-313C
       through R.72-313Q.
   C. A hearing may be requested by any person. If an adverse action is involved, the hearing may
       be requested provided that the written request is received within thirty (30) days after the notice
       is given to the person.
   D. All hearings shall be initiated via correspondence approved by the Commission which shall
       give notice to all parties of the hearing.
       (1) 'All parties must receive notice of the hearing of not less than thirty (30) days;
       (2) The notice shall be sent by the designated hearing officer(s);
       (3) The notice shall include:
           (a) A statement of the time, place, and nature of the hearing;
           (b) A statement of the legal authority and jurisdiction under which the hearing is to be
               held;
           (c) A reference to the particular sections of the statutes and rules involved;
           (d) A short and plain statement of the matters asserted. If the hearing officer(s) is/are
               unable to state the matters in detail at the time the notice is served, the initial notice
               may be limited to a statement of the issues involved. Thereafter, upon application, a
               more definite and detailed statement shall be furnished.








     E. All hearings shall be conducted by a hearing officer(s) appointed by the Commission.
    F. All hearings shall be conducted in accordance with Section 1-23-10 et. seq. of the 1976 South
        Carolina Code of Laws.
    G. The hearing officer(s) shall issue a proposal for decision which shall be mailed to the parties.
    H. Within twenty (20) days after mailing of the proposal for decision, any party may file
        exceptions to the hearing officer's proposal for decision.
        (1) Such exceptions shall be in written form, addressed to the Chairman of the Commission,
            and served upon all adverse parties;
        (2) The exceptions shall list all the grounds upon which the exceptions are based.

    I.  If no exceptions are received by the Commission within the twenty (20) day period following
        the mailing of the proposal for decision, the Commission shall issue a final decision.
    J.  If timely exceptions are received, the Commission shall send notice to the parties that the
        appealing party(s) has thirty (30) days to submit a brief. Following the service of the appealing
        party's brief, or upon the expiration of the thirty (30) day period, whichever shall occur first,
        the other party shall have thirty (30) days to submit a brief. All briefs must be served on the
        opposing parties and filed with the Commission.
    K. Following receipt of all briefs, the Commission shall schedule an oral argument if requested to
        do so by either party.
    L. The request for an oral argument must be in writing, addressed to the Chairman of the
        Commission, and submitted with that party's brief.
    M. The oral argument shall be scheduled for the next regular Commission meeting following the
        filing of the last brief.
    N. The oral argument shall be heard by the members of the Commission present at the
        Commission meeting and shall be held in accordance with the following format:
        (1) The appealing party shall be given twenty minutes to present his case;
        (2) The opposing party shall be given twenty minutes to present his case;
        (3) The appealing party shall be given a rebuttal period of five minutes.

    0. The parties by written stipulation may agree that the hearing officer's decision shall be final and
        binding upon the parties.
    P.  The final order shall be issued by the Commission, and the decision of the Commission shall
        represent the view of a majority of the Commission members voting on the appeal.
    Q. The final order shall be written and shall comply with the provisions of Section 1-23-10 et. seq.
        of the 1976 South Carolina Code of Laws.

72-314. Citizen Complaint Procedure on Delegated Program Components and Individual Sites.

 A.   Persons may become aggrieved by land disturbing activities and program implementation. The
 following describes the procedure for a person to complain concerning program operation:
   (1) If the program component in question has been delegated to a local implementing agency, the
       complaint shall be registered first in writing with that agency. An attempt to resolve the
       problem shall be made with the local implementing agency.
   (2) In the event a solution can not be reached, the citizen may forward the complaint to the
       Commission for review. The Commission shall attempt to resolve the problem with the
       implementing agency and notify the citizen of the outcome of these efforts.
   (3) If the Commission determines, based on complaints indicating a continuing pattern, that
       implementation of delegated program elements falls below the acceptable standards established








        by these regulations, the Commission may suspend or revoke the delegation in accordance with
        R.72-304L.
    (4) All complaints filed with the Commission shall be held for a period of three years and will be
        considered when delegation renewal is requested by the local government.


   B. Persons may complain about individual site problems or damages. The procedure is as follows:
    (1) The complaint will be registered in writing with the appropriate implementing agency.
    (2) If the implementing agency is not the Commission and a solution can not be reached with the
        local implementing agency, the complaint should be filed with the Commission. The
        Commission will follow procedures listed in R.72-312E.

72-315. Penalties.
    A. Any person who violates any provision of this chapter or any ordinance or regulation
        promulgated, enacted, adopted, or issued pursuant to this chapter by the Commission or other
        implementing agency, or who initiates or continues a land disturbing activity for which a
        stormwater management and sediment control plan is required except in accordance with the
        terms, conditions, and provisions of an approved plan, is subject to a civil penalty of not more
        than one thousand dollars. No penalty may be assessed until the person alleged to be in
        violation has been notified of the violation. Each day of a violation constitutes a separate
        violation.
    B. The implementing agency shall determine the amount of the civil penalty to be assessed under
        this section for violations under its jurisdiction. It shall make written demand for payment
        upon the person responsible for the violation and set forth in detail the violation for which the
        penalty has been invoked. If payment is not received or equitable settlement reached within
        thirty days after demand for payment is made, a civil action may be filed in the circuit court in
        the county in which the violation is alleged to have occurred to recover the amount of the
        penalty. If the implementing agency is the commission, the action must be brought in the name
        of the State. Local governments shall refer the matters under their jurisdiction to their
        respective attorneys for the institution of a civil action in the name of the local government in
        the circuit court in the county in which the violation is alleged to have occurred for recovery of
        the penalty.

72-316. Severability.
      If any section, subsection, sentence, clause, phrase, or portion of these regulations are for any
      reason held invalid or unconstitutional by any court or competent jurisdiction, such provision and
      such holding shall not affect the validity of the remaining portions of these regulations.
     Fiscal Impact Statement:
     The South Carolina Land Resources Commission estimates that two additional staff engineers will
     be required to operate the program.























              APPENDIX B

  COASTAL ZONE MANAGEMENT PROGRAM

REFINEMENTS FOR STORMWATER MANAGEMENT









 Chapter mI   Management of Coastal Resources


         C. Uses of Management Concern
         3. 1Resource Policies
           XIII. Stormwater Management Guidelines (Page 111-74)

         Most land disturbing activities in South Carolina must comply with the requirements and
 applicable regulations of the Erosion and Sediment Reduction Act of 1983 (48-18-10, et. seq.), or the
 Stormwater Management and Sediment Reduction Act of 1991 (48-14-10, et. seq.).   The final
 regulations, effective on June 26, 1992, pursuant to the Stormwater Management and Sediment
 Reduction Act of 1991, establish the procedure and minimum standards for a statewide stormwater
 program.  Section R.72-304F of the regulations states that "the S.C. Coastal Council ( knas
 the Office of Ocean and Coastal Resource Management (OCRM), in coordination with the
 Commission, will serve as the implementing agency for these regulations in the jurisdictions of the
 local governments which do not seek delegation of program elements in the counties of Beaufort,
 Berkeley, Charleston, Colleton, Dorchester, Georgetown, Horry and Jasper."  In addition, Section
 R.72-307C(5)(g)$ states that "For activities in the eight coastal counties, additional water quality
 requirements may  be imposed to comply  with the S.C. Coastal Council (ICRM) Stormwater
 Management Guidelines. If conflicting requirements exist for activities in the eight coastal counties,
 the/S.C. Coastal Council (OCRM) guidelines will apply."

        Pursuant to the Coastal Zone Management Act, the Coastal Council (OCRM) is responsible
for protecting the environmentally sensitive areas of our coast.   While the regulations of the
Stormwater Management and Sediment Reduction Act adequately .address most nonpoint source
pollution problems, the need exists for establishing additional criteria to protect sensitive coastal
waters.

A. Stormwater Runoff Storage Requirements

       The regulations of the Stormwater Management and Sediment Reduction Act require that
"permanent water quality ponds having a permanent pool shall be designed to store and release the
first 1/2 inch of runoff from the site over a 24-hour period. The storage volume shall be designed to
accommodate, at least, 1/2 inch of runoff from the entire site." For all projects, regardless of size,
which are located within one-half (1/2) mile of a receiving water body in the coastal zone, this criteria
shall be storage of the first 112 inch of runoff from the entire site or storage of the first one (1) inch of
runoff from  the built-upon portion of the property, whichever is greater.   Storage may  be
accomplished through retention, detention or infiltration systems, as appropriate for the specific site.
In addition, for those projects which are located within 1,000 (one thousand) feet of shellfish beds, the
first one and one half (1 1/2) inches of runoff from the built-upon portion of the property must be
retained on site.
       Receiving water bodies include all regularly tidally influenced salt and freshwater marsh areas,
all lakes or ponds which are used primarily for public recreation or a public drinking water supply,
and other water bodies within the coastal zone, excluding wetlands, swamps, ditches and stormwater
management ponds which are not contiguous via an outfall or similar structure with a tidal water body.









B. Project Size Requiring Stormwater Management Permits

        Section R.72-305B(1) states that "for land disturbing activities involving two (2)\acres or less
of actual land disturbance which are. not part of a larger common plan of development or sale, the
person responsible for the land disturbing activity shall submit a simplified stormwater management
and sediment control plan meeting the requirements of R.72-307H. This plan does not require
preparation or certification by the designers specified in R.72-305H and R.72-305I."  Due to the
potentially damaging effect of certain projects of less than two (2) acres of land disturbance,
stormwater management and sediment reduction plan submittal and regulatory approval shall be
required for those smaller projects located within 1/2 mile of a receiving water body. Single family
homes that are not part of a subdivision development are exempt from this requirement.

C. Stormwater Management Requirements for Bridge Runoff

       The following is the criteria used to address stormwater management for bridges traversing
saltwater and/or critical areas.

  1)  No treatment is necessary for runoff from bridge surfaces spanning SB or SA waters.  This
       runoff can be discharged through scupper drains directly into surface waters. However, the
       use of scupper drains should be limited as much as feasibly possible.

  2)  If the receiving water is either ORW or SFH then the stormwater management requirements
       shall be based on projected traffic volumes and the presence of any nearby shellfish beds. The
       following matrix lists the necessary treatment practices over the different classes of receiving
       waters.

  3) The Average Daily Traffic Volume (ADT) is based upon the design carrying capacity of the
      bridge.









                                                      Average Daily Traffic Volume (ADT)

                                                             0-30,000   G.T. 30,000
                       ORW (within 1000 ft of
                       shellfish beds):                         ***             ***
                       ORW (not within 1000 ft of
                       shellfish beds)                           **              **
Water                  SFH (within 1000 ft of
                       shellfish beds)                           **             ***
Quality                SFH (not within 1000 ft of
                       shellfish beds)                           **              **
Class.                 SA                                          *               *
                       SB                                         *               *

*** The first one (1) inch of runoff from the bridge surface must be collected and routed to an
appropriate stormwater management system or routed so that maximum overland flow occurs
encouraging exfiltration before reaching the receiving body. Periodic vacuuming of the bridge surface
should be considered.

ï¿½** A stormwater management plan must be implemented which may require the overtreatment of
runoff from associated roadways to compensate for the lack of direct treatment of runoff from the
bridge surface itself. Periodic vacuuming should be considered. The use of scupper drains should be
limited as much as feasibly possible.

* No treatment is required. The use of scupper drains should be limited as much as feasibly possible.

D. Golf Courses Adjacent to Receiving Waterbodies

       Golf course construction and maintenance practices result in the potential for significant
negative impacts from the runoff of sediments, pesticides, herbicides and other pollutants. For this
reason, when golf courses are constructed adjacent to receiving waterbodies then the following
practices are to be incorporated.

  1)  Minimum setbacks from the receiving water body of 20 feet for all manicured portions of the
       golf course (fairways, greens and tees) are required unless other acceptable management
       techniques are approved and implemented to mitigate any adverse impacts.

  2)   All drainage from greens and tees must be routed to interior lagoons or an equivalent
       stormwater management system.

  3)   To prevent the conversion of the stormwater system to critical area and to maintain positive
       drainage at high tides, all outfalls from the lagoon system must 'be located at an elevation
       above the) critical area (if the discharge is to critical area) AND  above the normal water
       elevation a distance to allow for storage of the first one inch of runoff. The volume which
       must be stored shall be calculated by multiplying the area of all the greens and tees by one
       inch.  (Previously constructed stormwater management systems which meet all current and
       future storage requirements will not be required to modify outfalls.)









  4)   No greens or tees shall be located on marsh hummocks or islands unless all drainage can be
       conveyed to the interior lagoon system or to an equivalent onsite stormwater management
       system.

  5)   Stormwater impacts to freshwater wetlands shall be limited by providing minimum 20 foot
       buffers, or an accepted alternative, between manicured areas (fairways, greens and tees) and.
       the wetlands. This minimum buffer must be increased if land application of treated effluent is
       utilized in the area.

   6)   An integrated pest management system designed in accordance with current best technology
       practices must be employed on the course to limit the application of chemicals which, if over
       applied, may leach into the ground and adjacent surface waters.

  7)  In accordance with S.C. Department of Health and Environmental Control requirements, a
       two (2) foot separation must be maintained between the surface of the golf course and the
       ground water table where spray effluent is applied.

   8)  The normal ground water elevation must be established by a registered engineer or soil
       scientist.

  9)  All projects which are within 1000 feet of shellfish beds must retain the first 1 1/2 inches of
       runoff as otherwise described in item A above.

  10)  If spray effluent or chemicals are applied to the turf via the irrigation system, all spray heads
       must be located and set so as to prevent any aerosols from reaching adjacent critical areas.

E. Mines and Landfills

       Due to the significant amount of land disturbance involved in the construction of mines and
landfills, these types of operations need to strictly adhere to sediment/erosion control requirements
particularly when they are located near coastal waterways.  When mining or landfill projects are
located within 1/2 mile of receiving waterbodies, pumping of ground water from sediment basins must
be done with floating intakes only. Pumping of these basins must cease whenever the water levels
come to within two (2) feet of the pond bottom. In addition, landfill planning must be designed on a
comprehensive site basis for stormwater management and sediment/erosion control to include
management practices for each separate cell as it is phased into the landfill.

F. Notice of Approval

       All notice of approval must be in written form.
























              APPENDIX C

 NPDES GENERAL PERMIT FOR STORMWATER

DISCHARGES FROM CONSTRUCTION ACTIVITIES









        SOUTH CAROLINA DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL






                                    NPDES GENERAL PERMIT



                                               for




                STORM WATER DISCHARGES FROM CONSTRUCTION ACTIVITIES
            THAT ARE CLASSIFIED AS "ASSOCIATED WITH INDUSTRIAL ACTIVITY"
                                      BY EPA REGULATION






This permit authorizes storm water discharges to waters of the State South Carolina in accordance with the
monitoring requirements and other conditions set forth in Parts I through IX hereof. This permit is issued in
accordance with the provisions of the Pollution Control Act (S.C. Code Sections 48-1-10 et seq., 1976) and with
the provisions of the Federal Clean Water Act (PL 92-500), as amended, 33 U.S.C. 1251 et seq., the "CWA."






                       Director, Industrial and Agricultural Wastewater Division
                                 Bureau of Water Pollution Control




Issued:          Sentember 11. 1992  Expires:    Sentember 30. 1997

Effective:       October 1. 1992

Permit No.: SCR100000






                                             TABLE OF CONTENTS

 Part I.   COVERAGE  UNDER THIS PERMIT................................................................4
         A.   Permit Area ...................................4
         B.    Eligibility ......................4............................ .................4
         C.        Authorization; ..................................................................................5

 Part II. NOTICE OF INTENT REQUIREMENTS ..............................................6
         A.    Deadlines for Notification ..........................6.........                   .............6
         B.    Contents of Notice of Intent ..................................................................
         C.        Where to Submit ..........................................................................7
         D.   Renotification ................................. .........7......

Part mRI. SPECIAL CONDITIONS, MANAGEMENT PRACTICES, AND OTHER
         NON-NUMERIC LIMITATIONS.............. ..............................................7
         A.        Prohibition on non-storm water discharges...............................................7
         B.        Releases in excess of Reportable Quantities ...............................................7

Part IV. STORM WATER POLLUTION PREVENTION PLANS    .                                           .......................................8
         A.        Deadlines for Plan Preparation and Compliance ........................................ 8
         B.    Signature and Plan Review .......................8...
         C.  Keeping Plans Current   . .......................................................................9
         D.   Contents of Plan .............................................................. 9
         E.  Contractors.................1.......                                                                 12

Part V. RETENTION OF RECORDS ..............................12

Part VI. STANDARD PERMIT COND ITIONS...............................................................12
         A.  Duty to Comply ............................. 12
         B.    Continuation of the Expired General Permit ..............................................13
         C.         Need to halt or reduce activity not a defense .................. ............13
         D.        Duty to Mitigate...............................................................................13
         E.    Duty to Provide Information ................................. 13
         F.        Other  Information ..              ..........................................................13
         G.  Signatory Requirements ..............................13
         H.        False Statements, Representations or Certifications Falsifying Tampering
                  with or rendering Inaccurate .............................14
                  Monitoring Devices or Methods...............................................................14
         I.         Oil and Hazardous Substance Liability  ........................................14
         J.   Property Rights ....................;.....14...
         K.  Severability ........................................................................................ 14
         L.      . Requiring an individual permit or an alternative general permit ..........................14
         M.    State/Environmental Laws ................................                                              15
         N.        Proper Operation and Maintenance............................................................15
         0.   Inspection and Entry .........................................................................15
         P.   f   Permit Actions............................................     ......................................16
         P.  Permit Actions. .............                                                                            16
         Q.        Areawide Water Quality Management Plan Conformance ...........1....................16

Part VII.            REOPENER CLAUSE ..........................................................................16

Part VIII.TERMINATION OF COVERAGE ................................. 16
        A.   Notice of Termination ............................................................................16
        B.        Addresses...... ......................................................................................17

Part IX.  DEFINITIONS............... ................................................................................17



                                                        2








                                                  PREFACE


The CWA  provides that storm water discharges associated with industrial activity from a point source (including
discharges through a municipal separate storm sewer system) to waters of the United States are unlawful, unless
authorized by a National Pollutant Discharge Elimination System (NPDES) permit. The terms "storm water discharge
associated with industrial activity", "point source" and "waters of the United States" are critical to determining
whether a facility is subject to this requirement.  Complete definitions of these terms are found in the definition
section (Part IX) of this permit.






Part I. COVERAGE UNDER THIS PERMIT

A.       Permit Area.  The permit covers all areas of South Carolina.

B.       Eligiblitl.

        1.       This permit may authorize all discharges of storm water associated with industrial activity from
                construction sites, (by present EPA regulation this is sites or common plans of development or sale
                that will result in the disturbance of five or more acres total land area, however this may be
                reduced to less than five acres1 ), (henceforth referred to as storm  water discharges from
                construction activities) occurring after the effective date of this permit (including discharges
                occurring after the effective date of this permit where the construction activity was initiated before
                the effective date of this permit), except for discharges identified under paragraph I.B.3.

        2.       This permit may only authorize a storm water discharge associated with industrial activity from a
                construction site that is mixed with a storm water discharge from an industrial source other than
                construction, where:

                a. the industrial source other than construction is located on the same site as the construction
                activity;

                b.  storm water discharges associated with industrial activity from the areas of the site where
                construction activities are occurring are in compliance with the terms of this permit; and

                c. storm water discharges associated with industrial activity from the areas of the site where
                industrial activity other than construction are occurring (including storm water discharges from
                dedicated asphalt plants and dedicated concrete plants) are covered by a different NPDES general
                permit or individual permit authorizing such discharges.


        3.       Limitations on Coverage.  The following storm water discharges from construction sites are not
                authorized by this permit:

                a. storm water discharges associated with industrial activity that originate from the site after
                construction activities have been completed and the site has undergone final stabilization.

                b.  discharges that are mixed  with sources of non-storm water other than discharges which are
                identified in Part III.A of this permit and which are in compliance with Part IV.D.5 (non-storm
                water discharges) of this permit.

                c. storm water discharges associated with industrial activity that are subject to an existing NPDES
                individual or general permit or which are issued a permit in accordance with paragraph VI.L
                (requiring an individual permit or an alternative general permit) of this permit.  Such discharges
                may be authorized under this permit after an existing permit expires provided the existing permit
                did not establish numeric limitations for such discharges;




           On June 4, 1992, the United States Court of Appeals for the
Ninth Circuit remanded the exemption for construction sites of
less than five acres to the EPA for further rulemaking.  (Nos. 90-
70671 and  91-70200).   When this issue is resolved,  this permit
will be administratively modified without further public notice to
be in compliance with the final EPA regulation.






                 d. storm water discharges from construction sites that the Department has determined to be or may
                 reasonably be expected to be contributing to a violation of a water quality standard; and

                 e. storm water discharges from construction sites if the discharge or the clearing activities are
                 likely to adversely effect a listed endangered or threatened species or its critical habitat.

C.       Authorization     .

1.      A discharger must submit a Notice of Intent (NOI) in accordance with the requirements of Part II of this
        permit, using a NOI form provided by the Department (or a photocopy thereof), in order for storm water
        discharges from construction sites to be authorized to discharge under this general permit.

2.       All contractors and subcontractors of the owner/operator whose activities at the site may impact storm water
        discharges or controls at the site along the duration of the project, shall sign a copy of the certification
        statement given below:

                 "I certify by my signature below that I accept the terms and conditions of the Storm Water
                 Pollution Prevention Plan (SWPPP) as required by: the general National Pollutant
                 Discharge Elimination System (NPDES  permit number  SCR100000)  issued to the
                 owner/operator of the construction activity for which I have been contracted to perform
                 construction related professional services. Further, by my signature below, I understand
                 that I am becoming a co-permittee with the owner/operator and other contractors that have
                 become co-permittes to the general NPDES permit issued to the owner/operator of the
                 facility for which I have been contracted to perform professional construction services.
                 As a co-permittee, I understand that I, and my company, as the case may be, are legally
                 accountable to the SC Department of Health and Environmental Control (DHEC), under
                 the authorities of the CWA and the SC Pollution Control Act, to ensure compliance with
                 the terms and conditions of the SWPPP. I also understand that DHEC enforcement
                 actions may be taken against any specific co-permittee or combination of co-permittees if
                 the terms and conditions of the SWPP are not met. Therefore, having understood the
                 above information, I am signing this certification and am receiving co-permittee status to
                 the aforementioned general NPDES permit."  The date of the signature, the title of the
                 person providing the signature, and the name, address, and telephone number of the
                 contracted firm, shall also be provided.:  In the event the SWPPP is amended by the
                'owner, such amendments should be incorporated to the plan and the contractors and
                 subcontractors should acknowledge by signature.

        The signatory requirements of 40 CFR 122.22, as provided in Part VI.G of this permit are applicable to
        each contracted entity that must sign the contractor's certification statement. Upon signing the certification,
        the contractor is a co-permittee and becomes accountable to the Department to ensure the terms and
        conditions of this permit are implemented. All co-permitttes are subject to Department enforcement actions
        if permit conditions are not met.  Enforcement actions may be taken against any specific co-permittee or
        combination of co-permittees, with consideration given to the party responsible for the violation.  The
        owner/operator submitting the NOI shall retain all contractor certifications for at least three years after a
        contractor has completed work at the site. Copies of all contractor certifications and a copy of this permit
        shall be retained on the site of the construction activity. The owner/operator of the facility covered by this
        permit shall make all contractor certifications available upon request to the Department.

3.       Unless notified by the Department to the contrary, dischargers who submit an NOI in accordance with the
        requirements of this permit are authorized to discharge storm water from construction sites under the terms
        and conditions of this permit 48 hours after the date that the NOI is postmarked. The Department may deny
        coverage under this permit and require submittal of an application for an individual NPDES permit based on
        a review of the NOI or other information (see Part VI.L of this permit). This denial can be made at any
        time after the submittal of the NOI and does not have to be made within 48 hours after the date the NOI is
        postmarked.


                                  :~~~~~~~






 Part II. NOTICE OF INTENT REQUIREMENTS

 A. Deadlines for Notification.

 1.      Except as provided in paragraphs II.A.2, II.A.3, and II.A.4, individuals who intend to obtain coverage for
          storm water discharges from a construction site (where disturbances associated with the construction project
          begin after October 1, 1992), under this general permit shall submit a Notice of Intent (NOI) in accordance
          with the requirements of this Part at least 48 hours prior to the commencement of construction at any site or
         common plan of development or sale that will result in the disturbance of five or more acres total land area
         (NOTE:  see footnote 1 in Part I.B.:1);

 2.       For storm water discharges from a construction site where disturbances associated with construction
         activities have occurred before or on October 1, 1992 and continued after that date, NOIs in accordance with
         the requirements of this Part shall be submitted on or before October 1, 1992;

 3.       For storm water discharges from construction sites where the owner/operator changes, a new NOI in
         accordance with the requirements of this Part shall be submitted at least 48 hours prior to when the new
         owner/operator begins work at the site; and

4.      : A discharger is not precluded from submitting an NOI in accordance with the requirements of this part after
         the dates provided in Parts II.A.1, 2 or 3 of this permit.  In such instances, the Department may bring an
         enforcement action for failure to submit an NOI in a timely manner or for any unauthorized discharges of
         storm water associated with industrial activity that have occurred on or after the dates specified in Part
         II.A. 1, 2 and 3.

B.       Contents of Notice of Intent.  The Notice of Intent shall be signed in accordance with Part VI.G of this
         permit by all of the entities identified in Part II.B.3 and shall include the following information:

1.      The mailing address, and location of the construction site for which the notification is submitted.  Where a
         mailing address for the site is not available, the location can be described in terms of the latitude and
         longitude of the approximate center of the facility to the nearest 15 seconds that the construction site is
         located in;

2.       The owner's name, address, telephone number, and status as Federal, State, private, public or other entity.

3.       The name, address and telephone number of the operators with day to day operational control that have been
         identified at the time of the NOI submittal;

4.       The name of the receiving water(s), or if the discharge is through a municipal separate storm sewer, the
         name of the municipal operator of the storm sewer and the ultimate receiving water(s);

5.       The number of any NPDES permit for any discharge (including non-storm water discharges) from the site
        that is currently authorized by an NPDES permit.

6.       An indication of whether the owner or operator has existing quantitative data 'which describes the
        concentration of pollutants in storm water discharges (existing data should not be included as part of the
        NOI); and

7.       An estimate of project start date and completion date, estimates of the number of acres of the site on which
        soil will be disturbed, and a certification that a storm water pollution prevention plan has been prepared for
        the facility in accordance with Part IV of this permit, and such plan, as a part of the construction documents,
       ' provides compliance with any state or local sediment and erosion plans or permits.
        (A copy of the plans or permits should not be included with the NOI submission).



               * ff d; 00 f 0 0'~~~~~S I e0;0X0a     






C.       Where to Submit.

1.      Facilities which discharge storm water associated with industrial activity must use a NOI form provided by
        the Department (or photocopy thereof). Forms are available by calling (803) 734-5300. NOIs must be
        signed in accordance with Part VI.G of this permit. NOIs are to be submitted to the Department at the
        following address:

                 SC Department of Health and Environmental Control
                 NPDES/ND Permit Administration
                 Storm Water Notice of Intent for Construction
                 2600 Bull Street
                 Columbia, S. C. 29201

2.       A copy of the NOI or other indication that storm water discharges from the site are covered under an
        NPDES permit, and a brief description of the project shall be posted at the construction site in a prominent
        place for public viewing (such as alongside a building permit).

D.      Renlflication.  Upon issuance of a new general permit, the permittee is required to notify the Department
        of his or her intent to be covered by the new general permit.


Part m. SPECIAL CONDITIONS, MANAGEMENT PRACTICES, AND OTHER
       NON-NUMERIC LIMITATIONS

A.       Prohibition on non-storm water discharges.

1.      Except as provided in paragraph I.B.2 and II.A.2, all discharges covered by this permit shall be composed
        entirely of storm water.

2.       a.  Except as provided in paragraph III.A.2.b, discharges of material other than storm water must be in
        compliance with a NPDES permit (other than this permit) issued for the discharge.

        b. The following non-storm water discharges may be authorized by this permit provided the non-storm water
        component of the discharge is in compliance with paragraph IV.D.3.g: discharges from fire fighting
        activities; fire hydrant flushings; waters used to wash vehicles or control dust in accordance with Part
        IV.D.2.c.(2); potable water sources including waterline flushings; irrigation drainage; routine external
        building

        washdown which does not use detergents; pavement washwaters where spills or leaks of toxic or hazardous
        materials have not occurred (unless all spilled material, has been removed) and where detergents are not
        used; air conditioning condensate; springs; uncontaminated ground water; and foundation or footing drains
        where flows are not contaminated with process materials such as solvents.

B.       Releases in excess of Renortahble Ouantities.

1.      The discharge of hazardous substances or oil in the storm water discharge(s) from a facility shall be
        prevented or minimized in accordance with the applicable storm water pollution prevention plan for the
        facility. This permit does not relieve the permittee of the reporting requirements of 40 CFR part 117 and 40
        CFR part 302. Where a release containing a hazardous substance in an amount equal to or in excess of a
        reporting quantity established under either 40 CFR 117 or 40 CFR 302, occurs during a 24 hour period:

        a. The permittee is required to notify by telephone both the Department's Emergency Response Section at
        (803) 253-6488 and the National Response Center (NRC) at (800) 424-8802 in accordance with the
        requirements of 40 CFR 117 and 40 CFR 302 as soon as he or she has knowledge of the discharge;




                                                      7






         b. The permittee shall submit within 14 calendar days of knowledge of the release a written description of:
         the release (including the type and estimate of the amount of material released), the date that such release
         occurred, the circumstances leading to the release, and steps to be taken in accordance with Part III.B.3 of
         this permit to both EPA Region IV, 345 Courtland Street, N.E., Atlanta, Ga. 30365 and the SC Department
         of Health and Environmental Control, Emergency Response Section, 2600 Bull Street Columbia, S.C.
         29201; and

         c. The storm water pollution prevention plan required under Part IV of this permit must be modified within
         14 calendar days of knowledge of the release to: provide a description of the release, the circumstances
         leading to the release, and the date of the release.  In addition, the plan must be reviewed to identify
         measures to prevent the reoccurrence of such releases and to respond to such releases, and the plan must be
         modified where appropriate.

2.      sp1i2&. This permit does not authorize the discharge of hazardous substances or oil resulting from an on-site
         spill.


Part IV. STORM WATER POLLUTION PREVENTION PLANS

         A storm water pollution prevention plan shall be developed for each construction site covered by this permit.
          Storm water pollution prevention plans shall be prepared in accordance with good engineering practices.
         The plan shall identify potential sources of pollution which may reasonably be expected to affect the quality
         of storm water discharges from the construction site. In addition, the plan shall describe and ensure the
         implementation of practices which will be used to reduce the pollutants in storm water discharges associated
         with industrial activity at the construction site and to assure compliance with the terms and conditions of this
        permit.  Facilities must implement the provisions of the storm water pollution prevention plan required
        under this part as a condition of this permit.

A.      Deadlines for Plan Prenaration and Comnliance.

        The plan shall:

01.    - XBe completed prior to the submittal of an NOI to be covered under this permit and updated as appropriate;

2.      For construction activities that have begun on or before October 1, 1992, the plan shall provide for
        compliance with the terms and schedule of the plan beginning on October 1, 1992;

3.      For construction activities that have begun after October 1, 1992, the plan shall provide for compliance with
        the terms and schedule of the plan beginning with the initiation of construction activities.

B.      Sionature and Plan Review

1.0      The plan shall be signed in accordance with Part VI.G, and be retained on-site at the facility which generates
        the storm water discharge in accordance with Part V (retention of records) of this permit. Whenever this
        could not possibly be accomplished, the location of the plan should be determined.  Such determination
        should be included in the plan.

2.      The permittee shall make plans available to the Department upon-request or in the case of a storm water
        discharge associated with industrial activity which discharges through a municipal separate storm sewer
        system with an NPDES permit, to the municipal operator of the system.

3.      The Department may notify the permittee at any time that the plan does not meet one or more of the
        minimum requirements of this Part.  Within 7 days of such notification from the Department, (or as
        otherwise provided by the Department), the permittee shall make the required changes to the plan and shall
        submit to the Department a written certification that the requested changes have been made.

              ::   0::   . :  :     :  f .  :0    j    0:     :   \ :   9                 : 







C.       Keeninr Plans Current. The permittee shall amend the plan whenever there is a change in design,
         construction, operation, or maintenance, which has a significant effect on the potential for the discharge of
         pollutants to surface waters of South Carolina and which has not otherwise been addressed in the plan or if
         the storm water pollution prevention plan proves to be ineffective in eliminating or significantly minimizing
         pollutants from sources identified under Part IV.D.2 of this permit, or in otherwise achieving the general
         objectives of controlling pollutants in storm water discharges  associated with industrial activity.
         Amendments to the plan may be reviewed by the Department in the same manner as Part IV.B above. Plan
         records should be.updated periodically to reflect the certification that new contractors and subcontractors
         have signed.

D.       Contents of Plan. The storm water pollution prevention plan shall include the following items:

1.      Site Descriotion.  Each plan shall, provide a description of pollutant sources and other information as
         indicated:

         a. A description of the nature of the construction activity;

         b. A description of the intended sequence of major activities which disturb soils for major portions of the
         site (e.g. grubbing, excavation, grading);

         c. Estimates of the total area of the site and the total area of the site that is expected to be disturbed by
         excavation, grading, or other activities;

         d. An estimate of the runoff coefficient of the site after construction activities are completed and existing
         data describing the soil or the quality of any discharge from the site;

         e. A site map indicating drainage patterns and approximate slopes anticipated after major grading activities,
         areas of soil disturbance, the location of major structural and nonstructural controls identified in the plan, the
        location of areas where stabilization practices are expected to occur, surface waters (including wetlands),
         and locations where storm water is discharged to surface waters; and

         f. The name of the receiving water(s) and the ultimate receiving water(s), and areal extent of wetland
         acreage at the site.

2.       Controls.   Each plan shall include a description of appropriate controls and measures that will be
        implemented at the construction site. The plan will clearly describe for each major activity identified in Part
        IV.D.l.b appropriate control measures and the timing during the construction process that the measures will
        be implemented.  (For example, perimeter controls for one portion of the site will be installed after the
        clearing and grubbing necessary for installation of the measure, but before the clearing and grubbing for the
        remaining portions of the site. Perimeter controls will be actively maintained until final stabilization of those
        portions of the site upward of the perimeter control. Temporary perimeter controls will be removed after
        final stabilization). The description and implementation of controls shall address the following minimum
        components:

        a. Erosion and Sediment Controls.

        (1). Stabilization Practices.  A description of interim and permanent stabilization practices, including site-
        specific scheduling of the implementation of the practices. Site plans should ensure that existing vegetation
        is preserved where attainable and that disturbed portions of the site are stabilized. Stabilization practices
        may include: temporary seeding, permanent seeding, mulching, geotextiles, sod stabilization, vegetative
        buffer strips, protection of trees, preservation of mature vegetation, and other appropriate measures.  A
        record of the dates when major grading'activities occur, when construction activities temporarily or
        permanently cease on a portion of the site, and when stabilization measures are initiated shall be included in
        the plan.  Except as provided in paragraphs V.D.2.(a).(l).(a), and (b) below, stabilization measures shall






 be initiated as soon as practicable in portions of the site where construction activities have temporarily or
 permanently ceased, but in no case more than 14 days after the construction activity in that portion of the
 site has temporarily or permanently ceased.

 (a). Where the initiation of stabilization measures by the 14th day after construction activity temporary or
 permanently cease is precluded by snow cover, stabilization measures shall be initiated as soon as
 practicable.

 (b).  Where construction activity will resume on a portion of the site within 21 days from when activities
 ceased, (e.g. the total time period that construction activity is temporarily ceased is less than 21 days) then
 stabilization measures do not have to be initiated on that portion of site by the 14th day after construction
 activity temporarily ceased.

 (2). Structural Practices. A description of structural practices to divert flows, from exposed soils, store
 flows or otherwise limit runoff and the discharge of pollutants from exposed areas of the site to the degree
 attainable. Such practices may include silt fences, earth dikes, drainage swales, sediment traps, check dams,
 subsurface drains, pipe slope drains, level spreaders, storm drain inlet protection, rock outlet protection,
 reinforced soil retaining systems, gabions, and temporary or permanent sediment basins. Structural practices
 should be placed on upland soils to the degree attainable. The installation of these devices may be subject to
 Section 404 of the CWA.

 (a) For common drainage locations that serve an area with 10 or more disturbed acres at one time, a
 temporary (or permanent) sediment basin providing 3,600 cubic feet of storage per acre drained, or
equivalent control measures, shall be provided where attainable until final stabilization of the site.  The
3,600 cubic feet of storage area per acre drained does not apply to flows from offsite areas and flows from
onsite areas that are either undisturbed or have undergone final stabilization where such flows are diverted
around the sediment basin. For drainage locations which serve 10 or more disturbed acres at one time and
where a temporary sediment basin providing 3,600 cubic feet of storage per acre drained, or equivalent
controls is not attainable smaller sediment traps and/or sediment basins should be used. At a minimum, silt
fences, or equivalent sediment controls are required for all sideslope and downslope boundaries of the
construction area.

(b) For drainage locations serving less than 10 acres, sediment basins and/or sediment traps, silt fences or
equivalent sediment controls are required for all sideslope and downslope boundaries of the construction area
unless a sediment basin providing storage for 3,600 cubic feet of storage per acre drained is provided.

b. Storm  Water Management.  A description of measures that will be installed during the construction
process to control pollutants in storm water discharges that will occur after construction operations have
been completed.  Structural measures should be placed on upland soils to the degree attainable.  The
installation of these devices may be subject to Section 404 of the CWA. This permit only addresses the
installation of storm water management measures, and not the ultimate operation and maintenance of such
structures after the construction activities have been completed and the site has undergone final stabilization.
 Permittees are only responsible for the installation and maintenance of storm water management measures
prior to final stabilization of the site, and are not responsible for maintenance after storm water discharges
associated with industrial activity have been eliminated from the site.
(1). Such practices may include: storm water detention structures (including wet ponds); storm water
retention structures; flow attenuation by use of open vegetated swales and natural depressions; infiltration of
runoff onsite; and sequential systems,(which combine several practices).  The Storm Water Pollution
Prevention Plan shall include an explanation of the technical basis used to select the practices to control
pollution where flows exceed predevelopment levels.

(2). Velocity dissipation devices shall be placed at discharge locations and along the length of any outfall
channel as necessary to provide a non-erosive velocity flow from the structure to a water course so that the
natural physical and biological characteristics and functions are maintained and protected (e.g. no significant
changes in the hydrological regime of the receiving water).


                C:   g  0:   S         f  S     : 71 0 0;-:






   c. Other Controls.

         (1). Waste Disposal.  No solid materials, including building materials, shall be discharged to waters of
         South Carolina, except as authorized by a Section 404 permit.

         (2). Off-site vehicle tracking of sediments and the generation of dust shall be minimized.

         (3). The plan shall ensure and demonstrate compliance with applicable State and/or local waste disposal,
         sanitary sewer or septic system regulations.

         d. Annroved State or Local Plans.

         (1). Permittees which discharge storm water associated with industrial activity from construction activities
         must include in their storm water pollution prevention plan procedures and requirements specified in
         applicable sediment and erosion site plans or site permits, or storm water management site plans or site
         permits approved by State or local officials.  Permittees shall provide a certification in their storm water
         pollution prevention plan that their storm water prevention plan reflects requirements applicable to protecting
         surface water resources in sediment and erosion site plans or site permits approved by State or local
         officials. Permittee shall comply with any such requirements during the term of the permit. This provision
         does not apply to provisions of master plans, comprehensive plans, non-enforceable guidelines or technical
         guidance documents that are not identified in a specific plan or permit that is issued for the construction site.

         (2). Storm water pollution prevention plans must be amended to reflect any change applicable to protecting
         surface water resources in sediment and erosion site plans or site permits, or storm water management site
         plan or site permits approved by State or local officials for which the permittee receives written notice.
         Where the permittee receives such written notice of a change, the permittee shall provide a recertification in
        the storm water pollution plan that the storm water pollution prevention plan has been modified to address
         such changes.

3.       Maintenan.  A description of procedures to ensure the timely  maintenance of vegetation, erosion and
        sediment control measures and other protective measures identified in the site plan in good and effective
        operating condition.

4.       In ctions.   Qualified personnel (provided by the discharger) shall inspect disturbed areas of the
        construction site and areas used for storage of materials that are exposed to precipitation that have not been
        finally stabilized, structural control measures, and locations where vehicles enter or exit the site at least once
        every seven calendar days and within 24 hours of the end of a storm that is 0.5 inches or greater. Where
        sites have been finally stabilized such inspection shall be conducted at least once every month.

        a. Disturbed areas and areas used for storage of materials that are exposed to precipitation shall be inspected
        for evidence of, or the potential for, pollutants entering the drainage system.  Erosion and sediment control
        measures identified in the plan shall be observed to ensure that they are operating correctly. Where
        discharge locations or points are accessible, they shall be inspected to ascertain whether erosion control
        measures are effective in preventing significant impacts to receiving waters. Locations where vehicles enter
        or exit the site shall be inspected for evidence of offsite sediment tracking.

        b.  Based on the results of the inspection, the site description identified in'the plan in accordance with
        paragraph IV.D.I of this permit and pollution prevention measures identified in the plan in accordance with
        paragraph IV.D.2 of this permit shall be revised as appropriate, but in no case later than 7 calendar days
        following the inspection. Such modifications shall provide for timely implementation of any changes to the
        plan within 7 calendar days following the inspection.

        c. A report summarizing the scope of the inspection, name(s) and qualifications of personnel making the
        inspection, the date(s) of the inspection, major observations relating to the implementation of the storm
        water pollution prevention plan, and actions taken in accordance with paragraph IV.D.4.b of the permit shall






         be made and retained as part of the storm water pollution prevention plan for at least three years from the
         date that the site is finally stabilized. Such reports shall identify any incidents of non-compliance.  Where a
         report does not identify any incidents of non-compliance, the report shall contain a certification that the
         facility is in compliance with the storm water pollution prevention plan and this permit. The report shall be
         signed in accordance with Part VI.G of this permit.

5.       Non-Storm Water Discharges - Except for flows from fire fighting activities, sources of non-storm water
         listed in Part III.A.2 of  this permit that are combined with storm water discharges associated with industrial
         activity must be identified in the plan. The plan shall identify and ensure the implementation of appropriate
         pollution prevention measures for the non-storm water component(s) of the discharge.

E.      Contractors

1.      The storm water pollution prevention plan must clearly identify for each measure identified in the plan, the
         contractor(s) and/or subcontractor(s) that will implement the measure.  All contractors and subcontractors
         identified in the plan must sign a copy of the certification statement in Part I.C.2 of this permit in
         accordance with Part VI.G of this permit. All certifications must be included in the storm water pollution
         prevention plan.


Part V. RETENTION OF RECORDS

A.       The permittee shall retain copies of storm water pollution prevention plans and all reports required by this
         permit, and records of all data used to complete the Notice of Intent to be covered by this permit, for a
         period of at least three years from the date that the site is finally stabilized. This period may be extended by
         request of the Department at any time.

B.       If at all possible, the permittee shall retain a copy of the storm water pollution prevention required by this
         permit at the construction site from the date of project initiation to the date of final stabilization.  If not
         possible, then, a place to keep the SWPPP must be designated in the plan itself.

C.       Addresses.   All written correspondence under this permit shall be directed to the Department at the
         following address:

                 SC Department of Health and Environmental Control
                 NPDES/ND Permit Administration
                 Storm Water Permitting
                 2600 Bull Street
                 Columbia, SC 29201


Part VI. STANDARD PERMIT CONDITIONS

A.      YDut  to Com&iv.

1.       The permittee must comply with all conditions of this permit.  Any permit noncompliance constitutes a
        violation of the S.C. Pollution Control Act and the CWA and is grounds for enforcement action; for permit
        termination, revocation and reissuance, or modification; or for denial of a permit renewal application.


2.       Penalties for Violations of Permit Conditions.

        a. Any person who violates a term or condition contained within this permit is subject to the action defined
        by Sections 48-1-320 and 48-1-330 of the S.C. Pollution Control Act.




                                                        12






        b. Nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for non-
        compliance.

B.      Continuation of the Exnired General Permit.

        This permit expires on September 30, 1997.  However, an expired general permit continues in force and
        effect until a new general permit is issued.  Permittees must submit a new NOI in accordance with the
        requirements of Part II of this permit, using a NOI form provided by the Department (or photocopy thereof)
        between August 1, 1997 and September 28, 1997 to remain covered under the continued permit after
        October 1, 1997. Facilities that had not obtained coverage under the permit by October 1, 1997 cannot
        become authorized to discharge under the continued permit.

C.      Need to halt or reduce activity not a defense. It shall not be a defense for a permittee in an enforcement
        action that it would have been necessary to halt or reduce the permitted activity in order to maintain
        compliance with the conditions of this permit.

D.      Dutyto Mitigate.  The permittee shall take all reasonable steps to minimize or prevent any discharge in
        violation of this permit which has a reasonable likelihood of adversely affecting human health or the
        environment.

E.      Dutv to Provide Information. The permittee shall furnish to the Department or in the case of a storm water
        discharge associated with industrial activity which discharges through a municipal separate storm sewer
        system with an NPDES permit, to the municipal operator of the system, any information which is requested
        to determine compliance with this permit or other information.

F.      Other Information.  When the permittee becomes aware that he or she failed to submit any relevant facts
        or submitted incorrect information in the Notice of Intent or in any other report to the Department, he or she
        shall promptly submit such facts or information.

G.      Sinmatorv Reauirements.  All Notices of Intent, storm  water pollution prevention plans, reports,
        certifications or information either submitted to the Department or the operator of a large or medium
        municipal separate storm sewer system, or that this permit requires be maintained by the permittee, shall be
        signed as follows:

        1. All Notices of Intent shall be signed as follows:

        a. For a corporation: by a responsible corporate officer. For the purpose of this section, a responsible
        corporate officer means: (1) a president, secretary, treasurer, or vice-president of the corporation in charge
        of a principal business function, or any other person who performs similar policy or decision-making
        functions for the corporation; or (2) the manager of one or more manufacturing, production or operating
        facilities employing more than 250 persons or having gross annual sales or expenditures exceeding
        $25,000,000 (in second-quarter 1980 dollars) if authority to sign documents has been assigned or delegated
        to the manager in accordance with corporate procedures;

        b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or

        c.  For a municipality, State, Federal, or other public agency: by either a principal executive officer or
        ranking elected official. For purposes of this section, a principal executive officer of a Federal agency
        includes (1) the chief executive officer of the agency, or (2) a senior executive officer having responsibility
        for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrators of
        EPA).

        2. All reports required by the permit and other information requested by the Department shall be signed by
        a person described above or by a duly authorized representative of that person. A person is a duly authorized
        representative only if:-



                                                       13







         a. The authorization is made in writing by a person described above and submitted to the Department.

         b.  The authorization specifies either an individual or a position having responsibility for the overall
         operation of the regulated facility or activity, such as the position of manager, operator, superintendent, or
      /  position of equivalent  responsibility or an  individual  or position having  overall  responsibility  for
         environmental matters for the company. (A duly authorized representative may thus be either a named
         individual or any individual occupying a named position).

         c.  Changes to authorization. If an authorization under Part II.B.3. is no longer accurate because a
         different operator has responsibility for the overall operation of the construction site, a new notice of intent
         satisfying the requirements of Part II.B must be submitted to the Department prior to or together with any
         reports, information, or applications to be signed by an authorized representative.

         d.   Certification. Any person signing documents under paragraph VI.G  shall make the following
         certification:

                  'I certify under penalty of law that this document       all attachments were prepared under my
                  direction or supervision in accordance with a system designed to assure that qualified personnel
                  properly gathered and evaluated the information submitted. Based on my inquiry of the person or
                  persons who  manage  the system,  or those persons directly responsible for gathering the
                  information, the information submitted is, to the best of my knowledge and belief, true, accurate,
                  and complete. I am aware that there are significant penalties for submitting false information,
                  including the possibility of fine and imprisonment for knowing violations."

H.       False  Statements.  Renresentations  or  Certifications Falsifvina Tamnerina  with  or  Rendering
         Inaccurate Monitoring Devices or Methods

         Section 48-1-340 of the S.C. Pollution Control Act provides that any person who knowingly makes any false
         statement, representation, or certification in an application, record, report, plan or other document filed or
         required to be maintained under this permit or who falsifies, tampers with or knowingly renders inaccurate
         any monitoring device or method required to be maintained by this permit, shall be subject to the civil or
         criminal provisions of Sections 48-1-320 and 48-1-330 of the Pollution Control Act.

I.       Oil and Hazardous Substance Liabilitv. Nothing in this permit shall be construed to preclude the
         institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties to
         which the permittee is or may be subject under Section 311 of the CWA, Section 106 of CERCLA, the S.C.
         Pollution Control Act, or applicable provisions of the S.C. Hazardous Waste Management Act and the S.C.
         Oil and Gas Act.

J.        r.o erty Rights. The issuance of this permit does not convey any property rights of any sort, nor any
         exclusive privileges, nor does it authorize any injury to private property nor any invasion of personal rights,
        nor any infringement of Federal, State or local laws or regulations.

K.       Severability. The provisions of this permit are severable, and if any provision of this permit, or the
        application of any provision of this permit to any circumstance, is held invalid, the application of such
        provision to other circumstances, and the remainder of this permit shall not be affected thereby.

L.       Reauirina an individual nermit or an alternative general nermit.

1.      The Department may require any person authorized by this permit to apply for and/or obtain either an
        individual NPDES permit or an alternative NPDES general permit. Any interested person may petition the
        Department to take action under this paragraph. Where the Department requires a discharger authorized to
        discharge under this permit to apply for an individual NPDES permit, the Department shall notify the
        discharger in writing that a permit application is required. This notification shall include a brief statement of



                                                       14






         the reasons for this decision, an application form, a statement setting a deadline for the discharger to file the
         application, and a statement that on the effective date of the individual NPDES permit or the alternative
         general permit as it applies to the individual permittee, coverage under this general permit shall
         automatically terminate.  Applications shall be submitted to the Department at the address indicated in Part
         V.C of this permit. The Department may grant additional time to submit the application upon request of the
         applicant. If a discharger fails to submit in a timely manner an individual NPDES permit application as
         required by the Department under this paragraph, then the applicability of this permit to the individual
         NPDES permittee is automatically terminated at the end of the day specified by the Department for
         application submittal.

2.       Any discharger authorized by this permit may request to be excluded from the coverage of this permit by
         applying for an individual permit. In such cases, the permitte shall submit an individual application in
         accordance with the requirements of 40 CFR 122.26(c)(1)(ii), with reasons supporting the request, to the
         Department at the address in Part V.C of this permit.  The request may be granted by issuance of an
         individual permit or an alternative general permit if the reasons cited by the permittee are adequate to
         support the request.

3.      When an individual NPDES permit is issued to a discharger otherwise subject to this permit, or the
         discharger is authorized to discharge under an alternative NPDES general permit, the applicability of this
         permit to the individual NPDES permittee is automatically terminated on the effective date of the individual
         permit or the date of authorization of coverage under the alternative general permit, whichever the case may
         be. When an individual NPDES permit is denied to a discharger otherwise subject to this permit, or the
         discharger is denied for coverage under an alternative NPDES general permit, the applicability of this permit
         to the individual NPDES permittee remains in effect, unless otherwise specified by the Department.

M.       State/Environmental lIaws.

I.      Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the
        permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable State law
        or regulation under authority preserved by section 510 of the CWA.

2.       No condition of this permit shall release the permittee from any responsibility or requirements under other
        environmental statutes or regulations.

N.      Proner Oneration and Maintenance. The permittee shall at all times properly operate and maintain all
        facilities and systems of treatment and control (and related appurtenances) which are installed or used by the
        permittee to achieve compliance with the conditions of this permit and with the requirements of storm water
        pollution prevention plans. Proper operation and maintenance also includes adequate laboratory controls and
        appropriate quality assurance procedures.   Proper operation and maintenance requires the operation of
        backup or auxiliary facilities or similar systems, installed by a permittee only when necessary to achieve
        compliance with the conditions of the permit.

O.       Insnection and Entry.   The permittee shall allow the Department or in the case of a construction site
        which discharges through a municipal separate storm sewer, an authorized representative of the municipal
        operator or the separate storm sewer receiving the discharge, upon the presentation of credentials and other
        documents as may be required by law, to:

1.      Enter upon the permittee's premises where a regulated facility or activity is located or conducted or where
        records must be kept under the conditions of this permit;
2.       Have access to and copy at reasonable times, any records that must be kept under the conditions of this
        permit; and

3.       Inspect at reasonable times any facilities or equipment (including monitoring and control equipment).





                                                       15







  P.       Permit Actions. This permit may be modified, revoked and reissued, or terminated for cause.  The filing
           of a request by the permittee for a permit modification, revocation and reissuance, or termination, or a
           notification of planned changes or anticipated noncompliance does not stay any permit condition.

  Q.       Areawide Water Oualitv Manaement Plan Conformance. All storm water discharges from construction
          sites given coverage under this general permit are in compliance with the appropriate Areawide Water
           Quality Management Plan prepared pursuant to Section 208 of the CWA.


 Part VII. REOPENER CLAUSE

  A.       If there is evidence indicating potential or realized impacts on water quality due to any storm water
          discharge associated with industrial activity covered by this permit, the discharger may be required to obtain
          an individual permit or an alternative general permit in accordance with Part I.C of this permit or the permit
          may be modified to include different limitations and/or requirements.

  B.       Permit modification or revocation will be conducted according to S.C. Regulation 61-9.


  Part VIII. TERMINATION OF COVERAGE

  A.       Notice of Termination.  Where a site has been finally stabilized and all storm water discharges from
          construction activities that are authorized by this permit are eliminated, the operator of the facility may
          submit a Notice of Termination that is signed in accordance: with Part VI.G of this permit.  The Notice of
          Termination shall include the following information:

  1.       The mailing address of the construction site for which the notification is submitted.  Where a mailing
          address for the site is not available, the location of the approximate center of the site must be described in
          terms of the latitude and longitude to the nearest 15 seconds, or the section, township and range to the
          nearest quarter;

 2.       The name, address and telephone number of the operator addressed by the Notice of Termination;

 3.       The NPDES permit number for the storm water discharge identified by the Notice of Termination;

 4.       An indication of whether the storm water discharges associated with industrial activity have been eliminated
          or the operator of the discharges has changed; and

 5.       The following certification signed in accordance with Part VI.G (signatory requirements) of this permit:

                   "I certify under penalty of law that all storm water discharges associated with industrial activity
                   from the identified facility that are authorized by an NPDES general permit have been eliminated
                   or that I am no longer the operator of the construction activity. I understand that by submitted this
                   notice of termination, that I am no longer authorized to discharge storm water associated with
                   industrial activity under this general permit, and that discharging activity to waters of South
                   Carolina is unlawful under the S.C. Pollution Control Act and the Federal Clean Water Act where
                   the discharge is not authorized by an NPDES permit. I also understand that the submittal of this
                   notice of termination does not release an operator from liability for any violations of this permit or
                   the Clean Water Act."

          For the purposes of this certification, elimination of storm water discharges associated with industrial
          activity means that all disturbed soils at the identified facility have been finally stabilized and temporary
          erosion and sediment control measures have been removed or will be removed at an appropriate time, or
          that all storm water discharges associated with construction activities from the identified site that are
          authorized by a NPDES general permit have otherwise been eliminated.






B.      Addresses.  All Notices of Termination are to be sent, using the form provided by the Department (or a
        photocopy thereof), to the following address::

                 S.C. Dept. Of Health and Environmental Control
                 NPDES/ND Permit Administration
                 Storm Water Notice of Termination
                 2600 Bull Street
                 Columbia, S.C. 29201


Part X. DEFINITIONS

        "Best  Management  Practices"  ("BMPs")  means  schedules  of activities,  prohibitions  of practices,
        maintenance procedures, and other management practices to prevent or reduce the pollution of waters of
        South Carolina. BMPs also include treatment requirements, operating procedures, and practices to control
        plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.

        "CEI" means the Code of Federal Regulations.

        "Commencement of Construction" - The initial disturbance of soils associated with clearing, grading, or
        excavating activities or other construction activities.

        "CWA" means Clean Water Act (formerly referred to as the Federal Water Pollution Control Act or
        Federal Water Pollution Control Act Amendments of 1972) Pub.L. 92-500, as amended Pub. L. 95-217,
        Pub. L. 95-576, Pub. L. (6-483 and Pub. L. 97-117, 33 U.S.C. 1251 et.seq.

        "Dedicated nortable asphalt nlant" - A portable asphalt plant that is located on or contiguous to a
        construction site and that provides asphalt only to the construction site that the plant is located on or adjacent
        to.  The term dedicated portable asphalt plant does not include facilities that are subject to the asphalt
        emulsion effluent limitation guideline at 40 CFR 443.

        "Dedicated nortable concrete nlant" - A portable concrete plant that is located on or contiguous to a
        construction site and that provides concrete only to the construction site that the plant is located on or
        adjacent to.

        "raDrtment" means the South Carolina Department of Health and Environmental Control or an authorized
        representative.

        "Director" means the Regional Administrator of the United States Environmental Protection Agency or an
        authorized representative.

        "EPA" means the United States Environmental Protection Agency.

        "Final Stabilization" means that all soil disturbing activities at the site have been completed, and that a
        uniform perennial vegetative cover with a density of 70% the cover for the area has been established or
        equivalent stabilization measures (such as the use of mulches or geotextiles) have been employed.

        "Flow-weighted comoosite samnle" means a composite sample consisting of a mixture of aliquots collected
        at a constant time interval, where the volume of each aliquot is proportional to the flow rate of the
        discharge.

        "Large and Medium municinal senarate storm sewer system" means all municipal separate storm sewers that
        are either:
        (i) located in an incorporated place (city) with a population of 100,000 or more as determined by the latest
        Decennial Census by the Bureau of Census (these cities presently are Columbia and Greenville; or



                                                      17






 (ii) located in the counties with unincorporated urbanized populations of 100,000 or more, except municipal
 separate storm sewers that are located in the incorporated places, townships or towns within such counties
 (these counties presently are Greenville and Richland; or
 (iii) owned or operated by- a municipality other than those described in paragraph (i) or (ii) and that are
 designated by the Department as part of the large or medium municipal separate storm sewer system (certain
 drainage areas of the City of Charleston have been designated).

 "   I means notice of intent to be covered by this permit (see Part I  of this permit.)

 II"NOT" means notice of termination (see Part VIII of this permit).

 "Point Source  means any discernible, confined, and discrete conveyance, including but not limited to, any
pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal
feeding operation, landfill leachate collection system, vessel or other floating craft from which pollutants are
or may be discharges.  This term does not include return flows from irrigated agriculture or agricultural
storm water runoff.

 '"Runoff coefficient" means the fraction of total rainfall that will appear at the conveyance as runoff.

 "Storm Water" means storm water runoff, snow melt runoff, and surface runoff'and drainage.

 "Storm Water Associated with Industrial Activitv" means the discharge from any conveyance which is used
for collecting and conveying storm water and which is directly related to manufacturing, processing or raw
materials storage areas at an industrial plant.  The term does not include discharges from facilities or
activities excluded from the NPDES program. For the categories of industries identified in subparagraphs
(i) through (x) of this subsection, the term includes, but is not limited to, storm water discharges from
industrial plant yards; immediate access roads and rail lines used or traveled by carriers of raw materials,
manufactured products, waste material, or by-products used or created by the facility; material handling
sites; refuse sites; sites used for the application or disposal of process waste waters (as defined at 40 CFR
401); sites used for the storage and maintenance of material handling equipment; sites used for residual
treatment, storage, or disposal; shipping and receiving areas; manufacturing buildings; storage areas
(including tank farms) for raw materials, and intermediate and finished products; and areas where industrial
activity has taken place in the past and significant materials remain and are exposed to storm water. For the
categories of industries identified in subparagraph (xi), the term includes only storm water discharges from
all areas listed in the previous sentence (except access roads) where material handling equipment or
activities, raw materials, intermediate products, final products, waste materials, by-products, or industrial
machinery are exnosed to storm water.  For the purposes of this paragraph, material handling activities
include the: storage, loading and unloading, transportat, or conveyance of any raw material, intermediate
product, finished product, by-product or waste product.  The term excludes areas located on plant lands
separate from the plant's industrial activities, such as office buildings and accompanying parking lots as long
as the drainage from the excluded areas is not mixed with storm water drained from the above described
areas. Industrial facilities (including industrial facilities that are Federally or municipally owned or operated
that meet the description of the facilities listed in this paragraph (i)-(xi)) include those facilities designated
under 122.26(a)(1)(v).  The following categories of facilities are considered to be engaging in "industrial
activity" for purposes of this subsection:
(i) Facilities subject to storm water effluent limitations guidelines, new source performance standards, or
toxic pollutant effluent standards under 40 CFR Subchapter N (except facilities with toxic pollutant effluent
standards which are exempted under category (xi) of this definition);
(ii) Facilities classified as Standard Industrial Classifications 24 (except 2434), 26 (except 265 and 267), 28,
29, 311, 32, 33, 3441, 373;
(iii) Facilities classified as Standard Industrial Classifications 10 through 14 (mineral industry) including
active or inactive mining operations (except for areas of coal mining operations meeting the definition of a
reclamation area under 40 CFR 434.11(1)) because the performance bond issued to the facility by the
appropriate SMCRA authority has been released, or except for areas of non-coal mining operations which
have been released from applicable State or Federal reclamation requirements after December 17, 1990 and

                        D  0       f     /   L C   \-:   . ::8






         oil and gas exploration, production, processing, or treatment operations, or transmission facilities that
         discharge storm water contaminated by contact with or that has come into contact with, any overburden, raw
         material, intermediate products, finished products, byproducts or waste products located on the site of such
         operations; inactive mining operations are mining sites that are not being actively mined, but which have an
         identifiable owner/operator;
         (iv) Hazardous waste treatment, storage, or disposal facilities, including those that are operating under
         interim status or a permit under Subtitle C of RCRA;
         (v) Landfills, land application sites, and open dumps that have received any industrial wastes (waste that is
         received from any of the facilities described under this subsection) including those that are subject to
         regulation under Subtitle D of RCRA;
         (vi) Facilities involved in the recycling of materials, including metal scrapyards, battery reclaimers, salvage
         yards,  and  automobile junkyards,  including but limited to those  classified as  Standard  Industrial
         Classification 5015 and 5093;
         (vii) Steam electric power generating facilities, including coal handling sites;.
         (viii) Transportation facilities classified as Standard Industrial Classifications 40, 41, 42, 44, and 45 which
         have vehicle maintenance shops, equipment cleaning operations, or airport deicing operations. Only those
         portions of the facility that are either involved in vehicle maintenance (including vehicle rehabilitation,
         mechanical repairs, painting, fueling, and lubrication), equipment cleaning. operations, airport deicing
         operations, or which are otherwise identified under paragraphs (i)-(vii) or (ix)-(xi) of this subsection are
         associated with industrial activity;
         (ix) Treatment works treating domestic sewage or any other sewage sludge or wastewater treatment device
         or system, used in the storage treatment, recycling, and reclamation of municipal or domestic sewage,
         including land dedicated to the disposal of sewage sludge that are located within the confines of the facility,
         with a design flow of 1.0 mgd or more, or required to have an approved pretreatment program under 40
         CFR 403.  Not included are farm lands, domestic gardens or lands used for sludge management where
         sludge is beneficially reused and which are not physically located in the confines of the facility, or areas that
         are in compliance with 40 CFR 503;
         (x) Construction activity including clearing, grading and excavation activities except: operations that result in
         the disturbance of less than five acres of total land area which are not part of a larger common plan of
         development or sale2;

         (xi) Facilities under Standard Industrial Classifications 20, 21, 22, 23, 2434, 25, 265, 267, 27, 283, 31
         (except 311), 34 (except 3441), 35, 36, 37 (except 373), 38, 39, 4221-25, (and which are not otherwise
         included within categories :(i)-(x)).

         'Waters of South Carolina" means all waters of the United States within the political boundaries of the State
         of south Carolina.

         "Waters of the United States" means:
         (a) All waters which are currently used, were used in the past, or may be susceptible to use in interstate or
         foreign commerce, including all waters which are subject to the ebb and flow of the tide;
         (b) All interstate waters, including interstate "wetlands";
         (c) All other waters such as interstate lakes, rivers, streams (including intermittent streams), mudflats,
         sandflats, wetlands, sloughs, wet meadows,  playa  lakes,  or natural ponds the use, degradation, or
         destruction of which would affect or could affectlinterstate or foreign commerce including any such waters:
         (1) Which are or could be used by interstate or foreign travelers for recreational or other purposes;
         (2) From which fish or shellfish are or could be taken and sold in interstate or foreign commerce; or
         (3) Which are used or could be used for industrial purposes by industries in interstate commerce;
         (d) All impoundments of waters otherwise defined as waters of the United States under this definition;
         (e) Tributaries of waters identified in paragraphs (a) through (d).of this definition;


      On June 4, 1992, the United States Court of Appeals for the Ninth Circuit remanded the exemption for
construction sites of less than five acres to the EPA  for further rulemaking. (Nos. 90-70671 and 91-70200).  Upon
final resolution of this issue this definition will be, administratively modified without public notice to comply with the
final EPA definition.


                                                        19






(f) The territorial sea; and
(g) Wetlands adjacent to waters (other than waters that are themselves wetlands) identified in paragraphs (a)
through (f) of this definition.
Waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of CWA
are not waters of the United States. This exclusion applies only to manmade bodies of water which neither
were originally created in waters of the United States (such as disposal areas in wetlands) nor resulted from
the impoundment of waters of the United States.

"10-vear. 24-hour nrecinitation event" means the maximum 24-hour precipitation event with a probable
reoccurrence interval of once in 10 years.




















































                                             20






        South Carolina


DHEC
Department of Health and Environmental Control  STORMWATER MANAGEMENT
                        STANDARD REPORTING FORM FOR CONSTRUCTION SITES
                                       DISTURBING 2 ACRES OR LESS
                                          (See Reverse for Instructions)


      DATE

      1. FACILITY NAME OR PROJECT NAME
          COUNTY                                     CITY/TOWN
          LOCATION (also:shown on location map)
          TAX MAP #

      2.  PROPERTY OWNER OF RECORD
          ADDRESS
          PHONE (DAY)                          (NIGHT)                   (MOBILE)

      3. ENGINEER OR CONTACT PERSON
          ADDRESS
          PHONE (DAY)                           (NIGHT)                  (MOBILE)

      4.  CONTRACTOR OR OPERATOR (if known)
          ADDRESS
          PHONE (DAY)                             (NIGHT)                   (MOBILE)

      5.  SITE OR DAY-TO-DAY CONTACT
          ADDRESS
          PHONE (DAY)                             (NIGHT)                   (MOBILE)

      6. SIZE, TOTAL (acres)                    SURFACE AREA OF LAND DISTURBANCE

      7. NEAREST RECEIVING WATERBODY
          DISTANCE TO NEAREST RECEIVING WATERBODY
          ARE THERE ANY FRESHWATER WETLANDS LOCATED ON THE PROPERTY?

          IF YES, HAVE THE WETLANDS BEEN DELINEATED?

      8. START DATE                                 COMPLETION DATE

      9. DESCRIPTION OF CONTROL PLAN TO BE USED DURING CONSTRUCTION. (MAY BE SHOWN ON PLAN SHEETS)





      10. I HEREBY CERTIFY THAT ALL LAND DISTURBING CONSTRUCTION AND ASSOCIATED ACTIVITY PERTAINING TO THIS
          SITE SHALL BE ACCOMPLISHED PURSUANT TO AND IN KEEPING WITH THE TERMS AND CONDITIONS OF THE
          APPROVED PLANS. I ALSO CERTIFY THAT A RESPONSIBLE PERSON WILL BE ASSIGNED TO THE PROJECT FOR DAY-TO
          DAY CONTROL.



                                                  OWNER/PERSON FINANCIALLY RESPONSIBLE

      11. I HEREBY GRANT AUTHORIZATION TO THE DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL AND/OR THE
         LOCAL IMPLEMENTING AGENCY THE RIGHT OF ACCESS TO THE SITE AT ALL TIMES FOR THE PURPOSE OF ON SITE
         INSPECTIONS DURING THE COURSE OF CONSTRUCTION AND TO PERFORM MAINTENANCE INSPECTIONS FOLLOWING
         THE COMPLETION OF THE LAND DISTURBING ACTIVITY.




                                                  OWNER/PERSON FINANCIALLY RESPONSIBLE
      DHEC 3307 (9/94)











                                                                             INSTRUCTIONS
                                 STANDARD REPORTING FORM FOR CONSTRUCTION SITES DISTURBING 2 ACRES OR LESS

  Who Must File A Standard Reporting Form For Disturbing 2 Acres or Less                   City of Greenville:
                                                                                               City of Greenville
 Any public (federal, state, local or school), private, industrial, commercial and/or           Engineering & Public Works Department
 residential subdivision project that will be engaging in any land disturbing                   Post Office Box 2207
 activity that disturbs an area two (2) acres or less.                                          Greenville, SC 29602
                                                                                               (803) 467-4400
  When is a Land Disturbance Permit Required on Projects of 2 Acres or Less
                             of Actual Disturbance                                         Spartanburg County:
                                                                                               Spartanburg County Public Works Department
 If the land disturbance project is located within one-half (/2) mile ofa receiving             Post Office Box 1633
 waterbody in the S. C. Coastal Zone (Beaufort, Berkeley, Charleston, Colleton,                 Spartanburg, SC 29304
 Dorchester, Georgetown, Horry and Jasper Counties) then a permit is required and               (803) 596-3582
 this reporting from CAN NOT be used. Particular emphasis shall be placed on the
 following projects in this category:                                                      City of Spartanburg:
                                                                                               City of Spartanburg
 (a) All commercial buildings which will handle hazardous chemicals (including                  Public Works Department
     gasoline, kerosene, diesel fuel, nutrients, etc.)                                         Post Office Drawer 1749
                                                                                               Spartanburg, SC 29304-1749
 (b) All commercial buildings and parking/runway areas with greater than one (1)                (803) 596-2107
     acre of impervious surface (building and parking).
                                                                                          York County:
 (c) All commercial buildings and parking/runway areas with greater than one-                   York County Planning
     half (1/2) acre of impervious surface located directly adjacent to a salt water              and Development Services
     (critical) area.                                                                           1070 Hackle Boulevard, Box A-5
                                                                                               Rock Hill, SC 29732
 (d) All residential subdivision developments located directly adjacent to a salt               (803) 922-7271
     water (critical) area.
                                                                                          AUl other counties:
(e) All projects impacting Geographical Areas of Particular Concern (GAPC)                     S.C.D.H.E.C.
                                                                                              Stormwater Management
The design of these projects (a-e) must meet the requirements of R. 72-3071 of the             2600 Bull Street
S. C. Stormwater management and Sediment Reduction regulations and must                        Columbia, SC 29201
have the plans and specifications prepared by a registered engineer, landscape                 (803):734-5300
architect or Tier B Land surveyor. Other activities within one-half(112) mile of a
receiving waterbody in the Coastal Zone require a permit but must only meet the
submittal requirements of R72-307H'which do not require preparation by a                                            Completing The Application
licensed professional.
                                                                                          You must type or print, in the appropriate areas only. Direct any questions you
                                Where To File'                                            may have to (803) 734-5300 or the appropriate implementing agency.

Georgetown and Horry Counties:                                                              .  Enter the name of the project or facility where the land disturbing
     S.C.D.H.E.C. - O.C.R.M.                                                                    activity will be taking place. List the county and name of city/town if
     1601 North Oak Street, Suite 203                                                          applicable. Enter the location of the activity and the tax map number.
    Myrtle Beach, SC 29577
    (803) 626-7217                                                                        2-5. Enter the name, and complete address and phone numbers as needed.

Beaufort and Jasper Counties:                                                              6.  Enter the total area of the project in acres. Enter the total area that will be
    S.C.D.H.E.C. - O.C.R.M.                                                                    disturbed, in acres.
    Post Office Box 587
    Beaufort, SC 29901                                                                    7.  Enterthenameofthe waterbodies. Enter yes or no asneeded.
    (803) 524-6885
                                                                                          8.  List the anticipated start and completion dates for this project.
Berkeley, Charleston, Colleton, and Dorchester Counties:
    S.C.D.H.E.C. - O.C.RM.                                                                9.  Describe control plan to be used during construction.
    4130 Faber Place, Suite 300
    Charleston, SC 29405                                                                  For questions 10 & 11, please read the certification. Have appropriate person(s)
    (803) 744-5838                                                                        sign and date the certification.

Greenville County:                                                                                                   What Happens After I File
    Greenville County Soil &
     Water Conservation District                                                          If a permit is not required then the reporting form and pertinent submittal
    301 University Ridge, Suite 4500                                                      information is sent to the appropriate office of DHEC and the applicant may
    Greenville, SC 29601                                                                  proceed with construction activity provided the practices indicated in the
    (803) 467-2766                                                                        submittal are incorporated. A letter or permit in response to this reporting form is
                                                                                         ot required from DHEC. However, DHEC personnel can conduct site
                                                                                         inspections to insure compliance with the submitted plans.










                          S. C. DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
                                STORMWATER MANAGEMENT SUBMITTAL CHECK LIST

                                      SITES DISTURBING TWO (2) ACRES OR LESS


The applicant must include the following items in the submittal package:

_ 1. An anticipated starting and completion date of the various stages of land disturbing activities and the
      expected date the final stabilization will be completed.

_ 2. A narrative description of the stormwater management and sediment control plan to be used during land
      disturbing activities.

_ 3. General description of topographic and soil conditions of the tract.

_ 4. A general description of adjacent property and a description of existing structures, buildings, and other fixed
      improvements located on surrounding properties.

_ 5. A sketched plan (engineer's, Tier B surveyor's or landscape architect's seal not required) to accompany the
      narrative which shall contain:

 _ (a) A site location drawing of the proposed project, indicating the location of the proposed project in relation
        to the nearest receiving waterbodies, roadways, and jurisdictional boundaries;

 -  (b) The boundary lines of the site on which the work is to be performed;

 _  (c) A topographic map of the site if required by DHEC staff;

 _ (d) The location and details of temporary and permanent vegetative and structural stormwater management and
        sediment control measures.

_  6. Stormwater management and sediment control plans shall contain certification by the person responsible for
     the land disturbing activity that the land disturbing activity will be accomplished pursuant to the plan.

_ 7. All stormwater management and sediment control plans shall contain certification by the person responsible
     for the land disturbing activity of the right of DHEC or implementing agency to conduct on-site inspections.


                          (The requirements contained above may be indicated on one plan sheet.)




         South Carolina

DHEC
  partmenit do Hienlm and Environmental Control
                                                STORMWATER MANAGEMENT
                                 STANDARD APPLICATION FORM FOR CONSTRUCTION SITES
                                              DISTURBING MORE THAN 2 ACRES
                                                   (See Reverse for Instructions)


           Submission of this application constitutes notice that the party identified in Section 2 of this form intends to be authorized by a NPDES permit issued for storm
           water discharges associated with construction activity in the State of South Carolina. Becoming a permittee obligates such discharges to comply with the terms
           and conditions of the permit. ALL NECESSARY INFORMATION MUST BE PROVIDED ON THIS FORM.

                                                            Section 1:
           Date

           i.  FACILITY NAME OR PROJECT NAME
                COUNTY                             CITY OR TOWN
               LOCATION (also shown on location map)
               LATITUDE                                   LONGITUDE
               TAX MAP #                                 USGS QUAD NAME

           2.  NEAREST RECEIVING WATERBODY
                DISTANCE TO NEAREST RECEIVING WATERBODY
                ULTIMATE RECEIVING WATERBODY

                                                            Section 2

           3.   PROPERTY OWNER OF RECORD
                ADDRESS
                PHONE (DAY)                              (NIGHT)                    (MOBILE)

           4.  PERSON FINANCIALLY RESPONSIBLE FOR THE LAND DISTURBING ACTIVITY
               (if different from above)
               ADDRESS
               PHONE (DAY)                              (NIGHT)                    (MOBILE)

           5.  AGENT OR CONTACT PERSON (if applicable)
               ADDRESS
               PHONE (DAY)                              (NIGHT)                    (MOBILE)

           6.  ENGINEER, TECHNICAL REPRESENTATIVE OR FIRM
               ADDRESS
               PHONE (DAY)                              (NIGHT)                     (MOBILE)

           7.  CONTRACTOR OR OPERATOR (if known)
              ADDRESS
              PHONE (DAY)                              (NIGHT)                     (MOBILE)

                                                         Section 3

           8.  SIZE, TOTAL (acres)                  SURFACE AREA OF LAND DISTURBANCE (acres)

           9.  SIC CODE                            (SIC code only required if site disturbs S acres or more)

              IS THE SITE LOCATED ON INDIAN LANDS? (if site disturbs 5 acres or more)

           10. TYPE OF PROJECT & FEES (please circle the type of activity)
                   a. Federal . State -Local - School (EXEMPT FROM FEES)
                   b. Industrial - Commercial - Residential (S50per disturbed acre, max. S1,000 per project)

                     TOTAL FEE S

           DHEC 3306 (9/94)












                                                                              INSTRUCTIONS
                                 STANDARD APPLICATION FORM FOR CONSTRUCTION SITES DISTURBING MORE THAN 2 ACRES

 Who Must File A Standard Application Form For Sites Greater Than Two (2)                   Section I Location Information
 Acres
                                                                                         I. Enter the name of the project or facility where the land disturbing activity will be
 Any Public (federal, state, local or school) or private industrial, commercial, and/or,   taking place. Enter the location of the activity. A USGS map with the site location
 residential project that will be engaging in any land disturbing activity that disturbs    identified must be included.
 an area of two (2) or more acres.
                                                                                         2. Enter the names of the waterbodies as needed.
 Where To Fdle
                                                                                         Section 2 Personal Information
 Georgetown and Horry Counties:
                                                                                         Enter the name, complete address and phone numbers as needed.
   S.C.D.HE.C.-O.C.R.M
   1601 North Oak Street, Suite 203, Myrtle Offices                                         Section 3 General Information
   Myrtle Beach, SC 29577
   (803) 626-7217                                                                           8. Enter the total area of the project area in acres. Enter the total surface area, in
                                                                                         acres, of the land that will be disturbed. If two (2) acres or less, please refer to
 Beaufort and Jasper Counties:                                                              Standard Reporting Form For Construction Sites Disturbing 2 Acres or Less.

   S.C.D.H.E.C.-O.C.R.M.                                                                    9. List the Standard Industrial Classification (SIC) code as needed. Enter yes or no,
   P. O. Box 587                                                                            as appropriate if the site is located on Indian lands. (Only needed if site is 5 acres or
   Beaufort, SC 29901                                                                       greater).
   (803) 524-6885
                                                                                                        NOTE: SIC CODES ONLY REOUIRED IF SITE
 Berkeley, Charleston Colleton, and Dorchestor Counties:                                                         DISTuRBS FIVE I5s OR MORE ACRES

   S.CD.H.E.C.-O.C.R.M.                                                                                                         SIC CODES:
   4130 Faber Place, Suite 300
   Charleston, SC 29405                                                                                  15  GENERAL BUILDING CONTRACTORS
  (803) 744-5838
                                                                                                     1521 Single-family housing construction
Greenville County:                                                                                      1522 Residential construction, nec.
                                                                                                     1531 Operativebuilders
  Greenville County Soil and Water Conservation District                                                1541 Industrial buildings and warehouses
  301 University Ridge, Suite 4500                                                                      1542 Nonresidential construction, nec.
  Greenville SC 29601
  (803)467-2756                                                                                         16   HEAVY CONSTRUCTION

Spartanburg County:                                                                                     1611 Highway and Street Construction
                                                                                                     1622 Bridge, tunnel, and elevated highway
  Spartanburg County Public Works Department                                                            1623 Water, sewer, and utility lines
  P.O. Box 1633                                                                                         1629 Heavy construction, nec.
  Spartanburg, SC 29304
  (803) 596-3582                                                                                        17    SPECIAL TRADE CONTRACTORS

City of Spartanburg:                                                                                    1794 Evacuation work
                                                                                                     1795 Wrecking and demolition work
  City of Spartanburg Public Works Department
  P.O. Drawer 1749                                                                          10. Circle the appropriate type of project. If your project is listed in the "a"
  Spartanburg, SC 29304-1749                                                               category enter "EXEMPT" for the total fee. If your project is listed in the "b"
                                                                                        category then enter the total fee.
York County:
                                                                                        11. Enter the actual start and completion dates or a best estimate.
  York County Planning and Development Services
  1070 Heckle Blvd. Box A-5                                                                12. Enter yes or no, as appropriate. If yes, delineation must be included on the plan.
  Rock Hill, SC 29732
  (803) 922-7271                                                                            Section 4 Certification -

All Other Counties:                                                                        For questions 13 through 15 please read the certification. Have appropriate
                                                                                        person(s) sign and date the certification.
  Department of Health & Environmental Control
  Stormnwater Management                                                                    Section 5 For Internal Ue Only
  2600 Bull Street
  Columbia, SC 29201                                                                       Section 6 Reminder
  (803) 734-5300
                                                                                        Distribute a Copy of the plans after approval to the 3 parties listed.
Completing The Application

You must type or print, in the appropriate areas only. Direct any questions you may
have to (803) 734-5300 or appropriate agency.











 11. START DATE                            COMPLETION DATE

12. ARE THERE ANY FRESHWATER WETLANDS LOCATED ON THE PROPERTY?
   IF YES, HAVE THE WETLANDS BEEN DELINEATED?



                                            Section 4

                                         CERTIFICATION

13. I HEREBY CERTIFY THAT ALL LAND DISTURBING CONSTRUCTION AND ASSOCIATED ACTIVITY PERTAINING TO
  THIS SITE SHALL BE ACCOMPLISHED PURSUANT TO AND IN KEEPING WITH THE TERMS AND CONDITIONS OF THE
  APPROVED PLANS. I ALSO CERTIFY THAT A RESPONSIBLE PERSON WILL BE ASSIGNED TO THE PROJECT FOR
  DAY-TO-DAY CONTROL. I CERTIFY UNDER PENALTY OF LAW THAT TIES DOCUMENT AND ALL ATTACHMENTS
  WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM DESIGNED TO
  ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHERED AND EVALUATED THE INFORMATION SUBMIITED.
  BASED ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY
  RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY
  KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT
  PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT
  FOR KNOWING VIOLATIONS.



                                                     OWNER/PERSON FINANCIALLY RESPONSIBLE



14. I HEREBY GRANT AUTHORIZATION TO THE DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL AND/OR
  THE LOCAL IMPLEMENTING AGENCY THE RIGHT OF ACCESS TO THE SITE AT ALL TIMES FOR THE PURPOSE OF ON
  SITE INSPECTIONS DURING THE COURSE OF CONSTRUCTION AND TO PERFORM MAINTENANCE INSPECTIONS
  FOLLOWING THE COMPLETION OF THE LAND DISTURBING ACTIVITY.





                                                     OWNER/PERSON FINANCIALLY RESPONSIBLE





15. DESIGNER CERTIFICATION - FIVE COPIES OF THE PLANS, ALL SPECIFICATIONS AND SUPPORTING CALCULATION,
   FORMS, AND REPORTS ARE HEREWITH SUBMITTED AND MADE A PART OF THIS APPLICATION. I HAVE PLACED
   MY SIGNATURE AND SEAL ON THE DESIGN DOCUMENTS SUBMITTED SIGNIFYING THAT I ACCEPT
   RESPONSIBILITY FOR THE DESIGN OF THE SYSTEM. FURTHER I CERTIFY TO THE BEST OF MY KNOWLEDGE AND
   BELIEF THAT THE DESIGN IS CONSISTENT WITH THE REQUIREMENTS OF TITLE 48, CHAPTER 14 OF THE CODE OF
   LAWS OF SC, 1976 AS AMENDED, AND PURSUANT REGULATION 72-300.



SIGNATURE                                                         S.C. REGISTRATION NUMBER


                                                                  ENGINEER
                                                                  TIER B. LAND SURVEYOR
                                                                  LANDSCAPE ARCHITECT










                                        Section 5

FOR OFFICIAL USE ONLY                         FILE #


1 I HEREBY CERTIFY THAT I HAVE THOROUGHLY REVIEWED THE APPLICATION, PLANS AND
   SUPPORTING DOCUMENTS AND FOUND THEM TO BE IN COMPLIANCE WITH THE LETTER AND THE
   INTENT OF THE LAW. THIS STAMP OF APPROVAL ON THE PLANS IS SOLELY AN
   ACKNOWLEDGEMENT OF SATISFACTORY COMPLIANCE WITH THE REQUIREMENTS OF THESE
   REGULATIONS. THE APPROVAL STAMP DOES NOT CONSTITUTE A REPRESENTATION OR
   WARRANTY TO THE APPLICANT OR ANY OTHER PERSON CONCERNING THE SAFETY,
   APPROPRIATENESS OF EFFECTIVENESS OF ANY PROVISIONS, OR OMISSION FROM THE STORMWATER
   AND SEDIMENT PLAN. I HAVE STAMPED FIVE SETS OF PLANS APPROVED. I HAVE FILED ONE SET
   AND DISTRIBUTED ONE SET TO THE INSPECTION AUTHORITY.




                                                 PLAN REVIEWER

2. WILL AS BUILT CERTIFICATION BY A REGISTERED PROFESSIONAL RESPONSIBLE FOR
   CONSTRUCTION BE REQUIRED FOR THIS PROJECT FOR FINAL APPROVAL?
   (To be specified by reviewer)


                  YES                     NO


   IFYES

   PRIOR TO FINAL APPROVAL, I WILL SUBMIT A; STATEMENT CERTIFYING THAT CONSTRUCTION IS
   COMPLETE AND IN ACCORDANCE WITH APPROVED PLANS AND SPECIFICATIONS. THIS WILL
   BE BASED UPON PERIODIC OBSERVATIONS OF CONSTRUCTION AND A FINAL INSPECTION FOR
   DESIGN COMPLIANCE BY ME OR A REPRESENTATIVE OF MY OFFICE WHO IS UNDER MY
   SUPERVISION. (To be signed by a registered professional responsible for construction)



   SIGNATURE                               S.C REGISTRATION NUMBER


                                                     ENGINEER
                                                     TIER B, LAND SURVEYOR
                                                     LANDSCAPE ARCHITECT


                                 Section 6

FOR APPLICANT USE

 PLEASE DISTRIBUTE 3 COPIES OF THE APPROVED PLANS AS SHOWN. PLEASE HAVE A COPY OF THE
 PLANS WITH THE APPROVAL STAMP ON THE SITE AT ALL TIMES.

    1. OWNER/PERSON FINANCIALLY RESPONSIBLE
    2. DESIGN PROFESSIONAL
    3. CONTRACTOR
                              " ~    ~      











                            S. C. DEPARTMENT OF HEALTH & ENVIRONMENTAL CONTROL
                                            STORMWATER PERMIT CHECK LIST

                                    SITES DISTURBING MORE THAN TWO :(2) ACRES


 The applicant must include the following items as part of the submittal package for a stormwater management permit:

_  1. Site plans (24 X 36 preferred).

_ 2. Copyof a 1:24,000 scale USGS topographic map with project outlined and the route of runoff offsite to the nearest
       receiving waterbody.

_3. Permit fee of $50/disturbed acre up to a maximum of $1000.

_4. Completed application form.

_  5. Project narrative (include brief overall description of project and pre- and post- development site conditions).

_ 6. Project calculations to include proposed flows versus requirements, peak rate(s) of runoff/discharge, and inflow/outflow
      hydrographs at point(s) of discharge. A summwy sheet with the amount of impervious area (acres), pre- and post-
      development runoff rates (cfs), and the amount of storage required (acre-ft) must be included.

_  7. Existing and proposed contours on a current plat.

_  8. Wetland delineation (if applicable).

   9. Sequence of construction operations.

_10. Identification of all phasing.

_11. Locations of stormwater and sediment control features.

_12. Details of stormwater and sediment control features (to include cross sections of ponds and swales, silt fence or hay bale
      detail, construction entrance detail, etc.).

_13. A general description of the predominant soil types on the site.

_14. A description of the maintenance program for stormwater management and/or sediment control facilities.

15. Sediment control notes to be included on the plans (as follows):

   All sediment control measures shall be inspected at least once every seven calendar days and after any storm event of greater
   than 0.5 inches of precipitation during any 24-hour period. All sediment control features shall be maintained until final
   stabilization has been obtained.

   Stabilization measures shall be initiated as soon as practicable in portions of the site where construction activities have
   temporarily or permanently ceased, but in no case more than 14 days after the construction activity in that portion of the site has
   temporarily or permanently ceased, unless activity in that portion of the site will resume within 21 days.

   Residential subdivisions require erosion control features for infrastructure as well as for individual lot construction.  Individual
   property owners shall follow these plans during lot construction or provide an individual plan meeting Section R.72-307 of the
   Stormwater Management and Sediment Reduction Act requirements.






                                                                                                                   ;orm Aoorovea. ome no. 2awww0
                                                        See Roer"le  for InstruJctions                                              Aconm,.Srvui~s:.31.15

                                                                                   United States Envronmenta  Protection Agency
                            NPOES  1.    UU5~~~~~~~~~~~~                                       wasnington. DC  20460
      FORM         jU                                 Notice of Intent (NOI) for Storm Water Discharges Associated with Industrial
                                                                              Activit Under the NPDES General Permit

   ISmisssion of this Notice of Intent constiumes notice that the Party Identified in Section I of this form intends to be authorized by a NPDES permit issued tar sorm'
water aischiarges associatea with industrial acuviy in the State identified in Section 11 of this form. Becoming a permame obligates such discharger to comply wit
the terms and conditions of the permit. ALL. NECESSARY INFORMATION MUST BE PROVIDED ON THI FORM.

 I. Factlity Operator Information


      Nae Phone: 

                                                                                                                             Stau of f
 Address:                    .                                                  t                                 aII


 City:     s t        a  aiaa                aag MP aaigIIIIISae.......                                     ZPCode:   I        i       ia         


 II. Facility/Sitle Location Information

                                                                                                                           Is fth Facility Ios  an
 N'armue    I       n       di            an            Landsaa'               or                                                              N               idaiL.id?"'')


 Address I


 City    :      ,     Ia                      a                                                Stle: L...   Zip Code-                                     


         Latitude    L..L..L..L..L LJ  Lngitude Q                       ualifir L:    JSeto               Townshimp:L...1            Range:      II 

Ill. Site Activit Infbrination

MS.4 Operator Namui:                      a                aa      a    *       a      aI        I      IIII             II


Recemng Water Body:I

If You are Filing as a C-eite.Are There Existin                                                                      Is the Faclitv Required to Submit
EnterStormWaterdGeneral PeriWt Nubw                                              uanutauve Usaa? (Yor N)             Monutonng Data? (11.2. or 3)       L

SIC or Deslonated
aAcumit Code:           Z-ay                             n: _____                   .rd:_____

If This, Fadlity is a Member of a Group
AaPlcation, Enter Grouoi Application Numbter-

It You Hame Other Existing NPOES
Permils.Enter Permit Numoers:          I                                 I     .     a      ,     ,    I 


 IV. AdditftioaInformation Renuirstd for Construction Activities Only
 Profect                     CG"OMpen
                          Start Date:  Dale:                                                          ~~~~~~~~~~~~~~~Is the Stor  Water Pollution Prevention Plan
                                                       Estimated Armtbea                               in C~omrpliance with State andibor Local
                     Jj-~~~~           ~~                                       II                             D~c
                                               ~~     Distuz~~~~ed fm     . ~~Sedimen  and Emos=o Plans? (Y or N)

 V. Certification:  I certify under penalty of law that this documenit and all atcments were brecared undeor my directioin or suPervision in aacrdance with a
 system designed to assure mma  "uified Personnel crocerly gather and evaluate the information suomnitted. Based on my inquiry of the person of Persons wno
 manaoe tme system. or those Persons directiv resoonsibie, tar garnering the informatio0n, Ith intormation subrnrlted is. to Toe PMs OfMy knowledge and belief, true.
 accrate. ano comp~lee. iam aware Imat there are significant penames for suomitting talse iniormation. inciuaing tine possioility at fine and impnisonment !or
 knowing violations.
 Print Name:.Dae




 Signature:
EPA Form 3510-6 (8-92)                                                                                                      PrneJo OyEe   ae







                                                                    Instructlons - EPA Form 35106
                                       Notice Of Intent rNOI) For Storm Water Dlshsargs Associated With Industrial Actvity
                                                          To Be Covered Under The NPOES General Permit

Who Mut  File A Notice Of Intt (NOI) Form                                              Those tacilities that must sunmrt montonng cata (e.g., cence 2) are. Section 313
                                                                                      EPCRA  acalities: pnmary meta industnries: land dlspossa unnslincterators/BlFs: wooo
Federas law at 40 CFR Part 122 prohibits point  source discharges of storm water       treatment tacalnmes taclites wint coal Pile runoff: and. battery reclalmers.
associated with  ndusmal actvty to a water boody(esI of the U.S. without a National
Pollutant Discharge Eliminaton Systemn NPDES) permit. The operator ol an industna      List. in descending oreer of signlifcance. up to lour 4-dign standar  Industnal
acvrtvy that has such a storm water discnarge must submit a NOI tO ootan coverage      classilcation iSIC) codes that best descntbe the pnncioa products or services Provided
uriner the NPDES Storm Water General Permit. It you have questions about whether       at the acility or site identified in Secton II of this applcation.
you need a permit under me NPOES Storm Water program. or d you neeo informaton
as to whether a artancular program is administered by EPA or a state agency, contact   For ndustnal activites adefined in 40 CFR 122.26(b(14)(i).(x) that o not have SIC
the Storm Water Hotline at (703) 821-4823.                                             codes that accurately descnbe the pnnacii products produced or services provided, the
                                                                                       Ioiowfng 2-chaatcter codes are to be used:
Where To  File fO4 Form
                                                                                       HZ  * Hazarlous waste treamernt. storage. or disposal facilities, including those that
NOIS must be  am to the folloig address:                                                       are operatng under intrm status or a permn under subttle C of RCRA (40
                                                                                              CFR 122.26 b)ï¿½(14)(iv)J;
           Storm Water Notice of Intent                                                LF  * Landfills land appliltion nitl.s, and ort dumps that rrei"e or have receved
           PO Box 1215                                                                        any indurtna  wastes. including those tat are sublect to rpgulation under
           Newngtn, VA 22122                                                                  subtitle D of RCRA 140 CFR 122.26 (b)(14)(v)l;
                                                                                       SE  - Steam etc power genersing facilitis, including oal handling itass (40 CFR
Completing The Foril                                                                           122.26 (b)(14)(vii)j;
                                                                                       TW  * Treament woMs treatng Oomestc sewage or any other sewage sludge or
You must type or rim. using upper-caselenters. in the appronpate areas only. Please            wastwater treatmet device or system. used in me storage, treatment.
place each character between tme marKs. Abbrevinate id necessary to stay within me             recyring, and reclamation et munitmi  or domestic sewage 140 CFR 122.26
number od cnaracters allowed for each nem. Use one space tor breas between words.              ibH)141ix)]: or.
bit not for punctuation marks unless hey are neoede  to clanty your response. It you   CO  - Constructio  actvtes 140 CFR 122.26 (Mb14)(x):
have any questons on this form, call the Storm Water Rolinme at i703) 821-4823.
                                                                                       I the facility listed in Secton II has  aricipaed in Part I of an aporoved storm water
Section I Fcility Opertnor Informarion                         :rouo aoDlication ano a group number has been assqinea. enter nme group applcauon
                                                                                       number in the space proviced.
Give me legal name  f the person. firm. public organizatpon. or any other entit that
operates tme tacilty or sse descnbed in this appication. The name of me oDerator may      th ere are other NPDES  ermits presently issued for the acilty or site liste in Section
or may not be the same as me name of the lacitr. The resonsible arty is the legal      II. list the permin numbers.  If an application for melacilv has been suDmImane  but no
enty mat conros tne lacllty's oDeration. rathe   an te plant or sne manager  Do not    permnit numer has bDen assigned, enter the applicanon number.
use a Colloquial name.  Enter the complete .cress ano telephone number o 0 the
oPertor.                                                                               Set   IV          o IV     ormraton Rqud ftor Construction Actvtl  Only

Enter the appronate letter to inicata the egal status of me operator of me facility    Consruction actives must complete Section IV in addition to Sections I through 111.
                                                                                        Only constructioon actves need to complete Section IV.
            F  Federa         :   M = Public (other than federal or statel
            S - Slat              P . Private                                           Enter te Proect  star date and   te estimated comoletion date for the enmre
                                                                                        development plan.
 SectIon I Feolty/ltie Loetre  In foreton
                                                                                        Provide an estimate of te tro  number of acres of the site on which soil will be
 Enter the faclity's or site's or s icial or legal name wan  compiete street address. including  disturbed Iround to me nearest aeel.
 city. state, and ZIP code. If the facility or site lacas a street address. indicate me state.
 the latitude and longitude of the laciaity to the nearest 15 seconds. or the quaner.   indicate whmerer me storm water pollutton prevention plan for the site is in comliance
 section. townsnhip, and range ito t  nearest uarter secton) of me approximate center    itnm approved state anwor loca seomenm ano  erosion plans, perms., or storm waler
 of the sie.                                                                            management plans.

  noicate wnetner me facilty is located on Indian lanes.                                 Secton V Certmfction

 Section II SIe Acvty Intrtione                                                          Federal statuns provide tr severe penamltes for suDmtting talse inrormaton on mtis
                                                                                        apploation form. Federal reguaions require this  olation to be signed as follows:'
 If Mte snorm warer discharges to a municipal separate oterm C-",or osytam IMS4). enter
 ,he. name of the operator of me MS4 (e.g.. municDaiy name. county namet ano the         For d  comroration: by a resonsible corporate officer. which means: u} president.
 receving water of me oischarge from the MS4. (A MS4 is :ehned as a conveyance           secretary. treasurer, or vice-president of the corporation in charge of a pnncioat
 or system of conveyances tinctuaing macs with  ramnage systems. municipal streets.    : ousness function. or any other person who Derforms similar poliy or decision making
 catch bans. curbs. gutters. a es, man-made channes. or storm rramns that is            functions. or ii t me manager f one or more manutactunng  production. or operanng
 owned or oerated by a state. city. town, borough. county. parish, disct. association.   aclties emloying more than 250 persons or harving gross annual sWes or expenditures
 or other ouic body which is aesignea or used for collecting or conveyrng storm water.  exceeding $25 million lm seon-quanrer 1980 ollars. it authonty to sign documents
                                                                                         : as Peen assigned or aegateda  o the manager In accoroance wln ccroorate
 If te actity discharges ston  watr irectly to recvng wateris). enter the name of the   procedures;
 recevng water.
                                                                                         For a patnnmenl   or so  prpntorsiat : by a general partner or Ihe propnetor ï¿½o
 If you are filing as a co-permmee ad a storm water general permt number has been
 Issued, enter that number n the space provided.                                         For a munrpality. srate. FederAl. or oherpublic lacifify: by either a pnncipal emec'   e
                                                                                         officer or ranking electe  offica.
  Indrcate wnether or no mthe owner or operator of the faclity has existing ouantitatve
  =ata that represent me cnaractensics ano concentraton ot Dolluants in storm water       Plap eork Reduction Act Notlde
  discharges.
                                                                                         Public reporting burden for mthis appltcaton is estimated to average 0 5 -   -
  Indicate wneer te aciliy is required to submit monitonnring data by enenng one of me    aplcation. ncluding time for remewing mstructions. searching existng c.1:
  Tollowing:                                                                              gatenng ano maintaining the data neded. and completng nan  rviewin-o      -
                                                                                         lt inlormation  Send comments regairing me burten estimate. any otne,  .
      1 . Not renuired to submit monitonng oara:                                          collection o  inrlrmnation. or suggestions for lmoroving this form
      2 . Reourred to suomn monnonng daia.                                                suggestions wmncn may increase or reduce this burden to: Chief. 'mc--
     3 * Not required to submni monnonng oata: suomrmng certication for monitonng        Brancn.  PM-223.  U.S.  Envronmental  Protection  Agency. 401  M
          excusion                                                                       Wasninglon. DC 20460. or Director. Office o Information and Regulator. -
                                                                                         ot Management ano Buoget. Wasnhington. ODC  20503.








                                                                                                                     ";i1 A^urOvIr~I.  0MB No. 2040,flM
                                     Please See Instructions Before Completing This Form                                               Approva   expire: B-31-95
                                                                                   United Slates Environmental Protection Anency
   rIPDES                                                                                       Washington. CC .0460
        ~~FORM    j                                     Notice of Termination (NOT) of Coverage Under the NPDES General Permit
                            IORMEPA ~~~~for Storm Water Discharges Associated with Industrial Activity

Submission of this Notice of Termination constitutes notice that the party identified in Section II of this form Is no longer authorized to discharge storm water
associated with industrial activity under the.NPDES program.  ALL NECESSARY INFORMATION MUST BE PROVIDED ON THIS FORM.

 I. Permit Information

 NPDES Storm Water                                               Check Here it You are No Longer                    Check Here if the Storm Water 
 General Permit Number:   I                                       the Operator of the Facility:                     Discharge is Being Terminated:


 II. Facility Operator Information


 Name: Phne
       ,'are  I                           ,      ,          ,                       ,      ,           ,              Phone:   I      i   I  i      I      i  i   I



 Address:   I     



 City:     I    I      I            I    I                  I                      I  I      State:          .i     ZIP Code: 


    FciiitylISite Location Information

 Name: 



 Addres S.


 City:                                                                                       State:    I.i.i        ZIPCode:
                                                                                                                  ZIP Code: J  ,            


 Latitude: I  I    L,              I  Longitude:!                      I Quaner: o .       Section:           Tnshi:,                  I Range:


 IV. Certilicaltion: I certify under penally of law that all storm water discharges associated with Industrial activity from the identified facility that are authorized by a
 NPDES eeneral permit have been eliminated or that I am no longer the operator of the facility or construction site. i understand that by submitting this Notice of
 Termination. I am no longer authorize  to discharge storm water associated with industrial activity under this generai permit. and that oischarging pollutants in
 storm water associated with industrial activlty to waters of the United States is unlawful under the Clean Water Act wnere the discharge ts not authonrized by a
 NPDES  ermit. I also understand that the submittal of this Notice of Termination does not release an operator from tiability for any violations of this permit or the
 Clean Water Act.

   -'ii1[   [4ï¿½i11~.                                -                                                                           '='=____________



  Signature:




                                               Instructions for Completing Notice of Termination (NOT) Form

     Who May File a Notice of Termination (NOT) Form                                   Where to File NOT Form

     Permittees who are presently covered under the EPA issued National Pollutant      Send this lorm to the the following address:
     Discharge Elimination System INPDES) General Permit for Storm Water
     Dicharges Associated with Industrial Activity may submit a Notice ol Termination      Storm Water Notice of Termination
     NOTI form wnen their lacilities no longer have any storm water discharges             P.O. Box 1185
     associated with industnrial activity as defined in the storm water regulations at 40  Newinoton. VA 22122
      :R 122.28 IbWi t -, or wnen tnev are no lonoer the ooerator of the tacilities

     For construction acivities. etimination of all storm water discharges associated  Completling the Form
     with industrial actiwtvity occurs when disturbed soils at the construction site have
     been linally stabilized andt lemporary erosion and sediment control measures      Type or print. using upper-case letters. in the appropriate areas only. Please
     -ave been removed or will be removed at an appropriate time, or that all storm    place each character between the marks. Abbreviate if necessary to stay within
     .vater oischaroes assoclaled with mindustrial activity from tie construction site that  the number of characters allowed for eacn item. Use only one space for breaks
     are authorized vby a NPDES general bermit have otherwise oeen eliminated.         between words. but not for Punctuatlon marks unless they are neeoed to clarify
     =inal stabilization means that all soil-disturbing activities at the site have been  your resPonse. If you nave any questions aOout this form. call the Storm Water
     omoDleled. and that a uniform perennial vegetative cover with a density of 70% of  Hotline at (703f 821-4823.
     'he cover For unpaved areas and areas not covered by permanent structures has
     -een established. or eouivaient permanent stabilization measures isucn as tne
     .,seor riorao. oaolons. or ceorextlesi nave oeen emoloveo.                        PLEASE SEE REVERSE OF THIS FORM FOR FURTHER INSTRUCTIONS

=-PA Form 35t0.7 18-921           -                                                                                                  nnte  o  Recvcled Paper
                                                                                                                           printe     d aRt













                                                                  Instructions - EPA Form 3510.7
                                           Notice of Termination (NOT) of Coverage Under The NPDES General Permit
                                                 for Storm Water Discharges Associated With Industrial Activity



Section I Permit Informatlon                                                             Section IV Certification

Enter the existing NPDES Storm Water General Permit number assigned to the               Federal statutes orovide for severe penalties for subr   ig false information on
facility or site identified in Section il. If you do not know the permit number.        this application torm. Federal regulations require this   cation to be signed as
contact the Storm Water Hotline at (703) 821-4823.                                       follows:

Indicate .your reason for submitting this Notice ol Termination by checking the          For a corporation: by a responsible corporate officr  ,hich means: (i) president.
appropriate box:                                                                         secretary. treasurer. or vice-president of the corr '  on in charge of a principal
                                                                                        business function. or any other person who pen: :is similar policy or decision
      If there has been a change of operator and you are no longer the operator          making functions. or (ii) the manager of one or more manufactunng, production.
     of the facility or site identified in Section III. check the corresponding box.    or operating facilities employing more than 250 persons or having gross annual
                                                                                        sales or expenditures exceeding $25 million (in second-quarter 1980 dollars). if
it all storm water discharges at the facility or site identified in Section III have been  authonty to sign documents has been assigned or delegated to the manager in
terminated. check the conesponding box.                                                  accordance with corporate procedures:

Section II Facility Operator Information                                                 For a partnership or sole propnetorship: by a general partner or the proprietor: or

Give the legal name of the person, firm, public organization. or any other entity that   For a munhcpalry. State., Federal. or other public facility: by either a pnncipal
operates the facility or site described in this application. The name of the operator    executive officer or ranking elected official.
may or may not be the same name as the facility. The operator of the facilitv is
ie legal entity wnich controls the tacility s operation. rather than the plant or site   Paperwork Reduction Act Notice
manager.  Do not use a colloquial name.  Enter the complete address and
telephone number of the ooerator.                                                        Public reporting burden for 'his aoplication Is estimated to average 0.5 hours per
                                                                                        application, including time laor reviewing instructions. searching existing data
Section III Facility/Site Location Information                                           sources, gathering and maintaining the data needed, and completing and
                                                                                        reviewing the collection of information. Send comments regarding the burden
Enter the facility's or site's official or legal name and complete address. including    estimate. any other aspect ol the collection of information. or suggestions for
cty. state and ZIP code, If the facility lacks a street address, indicate the state.     improving this foterm. including any suggestions which may increase or reduce this
the latitude and longitude of the facility to the nearest 15 seconds. or the quarter,    burden to: Chief  Information Policy Branch.  PM-223. U.S. Environmental
section. township. and range (to the nearest quarter section) of the approximate          Protection Agency. 401 M Street. SW. Washington. DC 20460. or Director. Office
center of the site.                                                                      of  Information and  Regulatory Affairs. Office of Management  and Budget.
                                                                                         Washington, DC 20503.










      NPDES GENERAL PERMIT FOR STORM WATER DISCHARGES FROM
 CONSTRUCTION ACTIVITIES THAT ARE CLASSIFIED AS "ASSOCIATED WITH
 INDUSTRIAL ACTIVITY" BY EPA REGULATION (PERMIT NO.: SCR100000)

                     CO-PERMITTEE AGREEMENT


All contractors and subcontractors of :he owner/operator whose
activities  at  the  construction  site  may  impact  storm  water
discharges or controls at the construction site along the duration
of the construction project, shall sign a copy of the certification
statement given below:

     "I certify by my signature below that I accept the terms and
     conditions  of  the Storm Water  Pollution  Prevention Plan
     (SWPPP)  as  required  by  the  general  National  Pollutant
     Discharge Elimination System (NPDES permit number SCR100000)
     issued to the owner/operator of the construction activity for
     which I have been contracted to perform construction related
     professional services.   Further,  by my signature below,  I
     understand  that  I am  becoming  a  co-permittee  with  the
     owner/operator and other contractors that have become co-
     permittees  to  the  general  NPDES  permit  issued  to  the
     owner/operator  of  the  facility  for  which  I have  been
     contracted to perform professional construction services.  As
     a co-permittee, I understand that I, and my company, as the
     case may be, are legally accountable to the SC Department of
     Health and Environmental Control (DHEC), under the authorities
     of the CWA and the SC Pollution Control Act,  to ensure
     compliance with the terms and conditions of the SWPPP.  I also
     understand that DHEC enforcement actions may be taken against
     any specific co-permittee or combination of co-permittees if
     the terms and conditions of the SWPPP are not met.  Therefore,
     having understood the above information, i am signing this
     certification and am receiving co-permittee status to the
     aforementioned -general NPDES  permit."   The date  of  the
     signature, the title of the person providing the signature,
     and the name, address, and telephone number of the contracted
     firm,  shall also be provided.   In the event the SWPPP is
     amended-by the owner, such amendments should be incorporated
     to the plan and the contractors and subcontractors should
     acknowledge by signature.

The signatory requirements of 40 fCFR 122.22, as provided in Part
VI.G of Permit No.: SCR100000 are applicable to each contracted
entity that must sign the contractor's certification statement.
Upon signing the certification, the contractor is a co-permittee
and becomes accountable to the Department to ensure the terms and
conditions of Permit No.: SCR100000 are implemented.   All co-
permittees are subject to Department enforcement actions if Permit
No.: SCR100000 conditions are not met.  Enforcement actions may be
taken against any specific co-permittee or combination of co-
permittees, with consideration given to the party responsible for
the violation.  The owner/operator submitting the NOI shall retain











       NPDES GENERAL PERMIT FOR STORM WATER DISCHARGES FROM
 CONSTRUCTION ACTIVITIES THAT ARE CLASSIFIED AS "ASSOCIATED WITH
 INDUSTRIAL ACTIVITY" BY EPA REGULATION (PERMIT NO.: SCR100000)

                   CO-PERMITTEE AGREEMENT  (PAGE 2)

all contractor certifications  for at least  three years                er a
contractor  has  completed  work  at  the  site.            Copies        all
contractor certifications and a copy of Permit No.: SCR1000C  shall
be  retained  on  the  site  of  the  construction  activity              The
owner/operator of the construction project covered by Per:.lt No.:
SCR100000 shall make all contractor certifications available upon
request to the Department.


                      CONTRACTOR'S CERTIFICATION

 Certification as co-permittee with                             (name of
 owner/operator of construction project covered under general permit) under the
 South Carolina NPDES General Permit for Storm Water Discharaes From
 Construction Activities That Are Classified As "Associated With Industrial
 Activity" By EPA Regulation (Permit No.: SCR100000).

 I certify under penalty of law that I understand the terms and conditions of
 the National Pollutant Discharge Elimination System (NPDES) permit that
 authorizes the storm water discharges associated with industrial activity from
 the construction project of the owner/operator identified as part of this
 certification.

        Signature        I          For            I  Responsible for



          (Name)                  (Company)

        (Position)            (Street/P.O. Box)
                                                          VActivity)

        (Signature)           (city, State, Zip)

 Date:                    Phone:


          (Name)                  (Company)

        (Position)            (Street/P.O. Box)
                                                          (Activity)
        (Signature)           (City, State, Zip)
 Date:                    Phone:























        APPENDIX E

SAMPLE CONSTRUCTION PLACARD










     SC Department of Health                     Notice of Authorization
     and Environmental Control                    For Land Disturbance

                                                  Expiration Date:


    Permittee:                                               Permit Number:


    Address of Permittee:                                    Date Issued:


    Name of Project:
                                                   Engineer/Plan Reviewer

    City:

    County:                                              Date



X   I     :   O:   .\           f           
























                     APPENDIX F

NOTIFICATION OF INITIATION OF LAND DISTURBING ACTIVITY

    AND REQUEST FOR FINAL SITE INSPECTION LETTER










                                                          Date:


Mr. John Doe
Department of Health and
  Environmental Control
Stormwater Management Section
2600 Bull Street
Columbia, SC 29201


                                                          RE: Start of Construction
                                                               Project:
                                                               County:


Dear Mr. Doe:

This letter is to inform the Department of Health and Environmental Control (DHEC) that land
disturbance on the above referenced project will begin on .(date  .   The following contact person
will be responsible for ensuring compliance with the Stormwater Permit.


ON-SITE CONTACT:

ADDRESS:



TELEPHONE #:



                                                          Sincerely,



                                                          Project Manager
                                                          Company Name



cc: Local DHEC District Office









                    S. C. DHEC WATER POLLUTION CONTROL
                      DISTRICT STORMWATER CONTACTS

DHEC DISTRICT                 COUNTIES

UPPER SAVANNAH DISTRICT       ABBEVILLE, EDGEFIELD, GREENWOOD
613 Main Street              LAURENS, MCCORMICK, SALUDA
Greenwood, SC 29646
(803)223-0333

LOWER SAVANNAH DISTRICT    AIKEN, ALLENDALE, BAMBERG
218 Beaufort Street N. E.    BARNWELL, CALHOUN, ORANGEBURG
Aiken, SC 29801
(803) 641-7670

APPALACHIA DISTRICT I        ANDERSON, OCONNEE
P. O. Box 1906
2404 N. Main Street
Anderson, SC 29621
(803) 260-5569

LOW COUNTRY DISTRICT         BEAUFORT, COLLETON, HAMPTON, JASPER
1313 13th Street;
Port Royal, SC 29935
(803) 522-9097

TRIDENT DISTRICT             BERKELEY, CHARLESTON, DORCHESTER
2470 Air Park Road
N. Charleston, SC 29418
(803) 740-1590

APPALACHIA DISTRICT III       CHEROKEE, SPARTANBURG, UNION
P. O. Box 4217
151 E. Wood St.
Spartanburg, SC 29303
(803) 596-3800

CATAWBA DISTRICT              CHESTER, LANCASTER, YORK
P. O. Box 100
1001 West Grace Ave.
Fort Lawn, SC 29714
(803) 285-7461

PEE DEE DISTRICT              CHESTERFIELD, DARLINGTON, DILLON
145 E. Cheves St.            FLORENCE, MARION, MARLBORO
Florence, SC 29501
(803) 661-4825










DHEC DISTRICT                     COUNTIES

WATEREE DISTRICT                  CLARENDON, KERSHAW, LEE, SUMTER
P. O. Box 1628
105 North Magnolia St.
Sumter, SC 29151
(803) 778-1531

CENTRAL MIDLANDS DISTRICT FAIRFIELD, LEXINGTON, NEWBERRY
P.O. Box 156                      RICHLAND
Building #5
State Park, SC 29147
(803)935-7015

WACCAMAW DISTRICT                 GEORGETOWN, HORRY, WILLIAMSBURG
1705 Oak St. Plaza, Suite 2
Myrtle Beach, SC 29577
(803) 935-7015

APPALACHIA DISTRICT II            GREENVILLE, PICKENS
301 University Ridge, Suite 5800
Greenville, SC 29601
(803) 241-1090









                                                             Date:


Mr. John Doe
Department of Health and
  Environmental Control
Stormwater Management Section
2600 Bull Street
Columbia, SC 29201


                                                             RE: Final Site Inspection Request
                                                                  Project:


Dear Mr. Doe:

This letter is to certify that construction of the stormwater management system at the above referenced
project has been completed in accordance with the approved plans and specifications. This certification
is based upon periodic observations of construction and a final inspection for design compliance by me
or a representative of my office who is under my supervision. Any changes from the approved plans
are shown on the attached as-built drawing (if applicable).

I would like for DHEC to schedule a final site inspection for design compliance on:

DATE:


                                                             Sincerely,



                                                             Project Engineer
                                                             Company Name


cc: Local DHEC District Office
























             APPENDIX G

DESIGN GUIDELINES FOR SEDIMENT CONTROL












                      REPORT

ENGINEERING AIDS AND DESIGN GUIDELINES
         FOR CONTROL OF SEDIMENT
                         in
               SOUTH CAROLINA



                       Prepared
                         by

           JOHN C. HAYES AND ASSOCIATES
                   John C. Hayes, PE
                  Billy J. Barfield, PE
                  110 Valley View Drive
                   Clemson, SC 29631

                      Prepared
                         for

         South Carolina Land Resources Commission
          South Carolina Department of Highways
               and Public Transportation
                     Columbia, SC
              South Carolina Coastal Council
                    Charleston, SC

                       8/31/94








                                                             ENGINEERING AIDS REPORT- PAGE 2

                                       REPORT
             ENGINEERING AIDS AND DESIGN GUIDELINES
         FOR CONTROL OF SEDIMENT IN SOUTH CAROLINA'

                           John C. Hayes and Billy J. Barfield

                                       Introduction

Simulations using a modified version of SEDIMOT II estimated the effectiveness of structures
for sediment control in four different physiographic regions of South Carolina. For the
purposes of this work, we separated the state into four (4) major land resource areas -
piedmont, sand hills, coastal plain, and tidal area. Treatments also included multiple
watershed sizes, land uses, and soil textures in each land resource area. The evaluation
included a wide range of slope lengths, slopes, pond dimensions, watershed shapes, as well as
other factors that are required for specific structures. Impacts of various controls on
downstream sediment load were evaluated using generated hydrographs and sedimentgraphs
from watersheds. Design aids in the form of graphs were developed to simplify design for
typical conditions and avoid simple rule-of-thumb design estimates. These design aids are a
compromise between detailed simulations and simple rules-of-thumb.

                                       Background

Recently regulations have been instituted that require control of stormwater runoff and
sediment discharge. Standard techniques are recommended for runoff, but methods for
designing structures for sediment control are lacking.

The described work includes estimation of performance of sediment detention ponds, filter
fences, and rock ditch checks. The performance of each control was simulated using a
modified version of SEDIMOT II with South Carolina's specific conditions and compared
with existing regulations in the state. From these simulations, design aids were developed that
are consistent with the sediment performance standards required by the state regulations.

Effectiveness of control is commonly determined by either a water quality design standard or
a performance standard. For sediment control, a water quality performance standard dictates
a maximum acceptable level of sediment in the effluent. The control is designed such that this
concentration is not exceeded. On the other hand, a water quality design standard establishes
a standard pond design based on a given drainage area or similar criterion. There are obvious


            The Design Aids are provided,"As Is" without warranty of any kind, either
              expressed or implied. In no event shall the authors or John C. Hayes and
              Associates be liable for any damages (incidental, consequential, or other), lost
              profits, or lost savings arising from the use or inability to use the methods
              presented. 








                                                                ENGINEERING AIDS REPORT - PAGE 3

 benefits associated with each method. Performance standards offer site specific water quality
 control, but require considerable on-site collection of information for design purposes and are
 more difficult to review. Structures designed for performance standards have a higher design
 cost than structures .designed for water quality design standards since estimation of effluent
concentration is difficult and requires complex calculations. However construction costs tend
to be considerably less, since design standards are inherently conservative. Design standards,
on the other hand, are more easily employed and complied with. A preferable alternative to
these methods is to provide a design procedure that meets a performance criteria without
requiring excessive design costs. To achieve this, the design is typically expected to be
slightly conservative, but considerably less conservative than if developed from a design
standard.

A typical approach under the performance philosophy is to size a control to meet a water
quality standard such as a total suspended solids (TSS) or settleable solids (SS) standard.
Trapping efficiency can also be used, but this fails to account for incoming sediment
concentration. Specific requirements for permanent stormwater management and sediment
control plan approval shown in the S.C. Stormwater Management and Sediment Reduction
Regulations include discharge rates and hydrographs for stormwater runoff. Additionally,
sediment basins or other practices must be designed to meet a removal efficiency of 80
percent suspended solids or 0.5 ml/l peak settleable solids concentration from a 10-yr, 24-hr
design storm.

                                     Potential Benefits

The intent of this work was to develop area specific design methods that give reasonable
assurance that effluent meets desired sediment performance standards without the lengthy
design process typically associated with designs developed to meet a performance standard.
This approach benefits regulatory agencies and developers because the time required for
design of controls for "typical" situations would be straightforward and minimized. Plan
reviewers do not have to labor through detailed calculations. The use of area specific design
methods provides a means of achieving sediment control without the steep learning curve
associated with simulation techniques. This allows engineers to gradually gain experience and
expertise in design of sediment controls. As reviewers and planners become more experienced
with the procedures, they may move to modeling techniques or other methods. (For large
scale developments or in sensitive areas, it is still anticipated that site specific data and other
procedures such as modeling be used for detailed evaluation of sediment controls.) Adoption
of area specific design techniques among state and local agencies helps to standardize use of
the practices, reduce confusion, and promote adoption of design techniques.

                                        Methodology

The project began with site visits at numerous locations in each of the land resource areas of
the state in order to see innovative methods, as well as areas needing improvement.
Evaluation of existing modeling capabilities led to major revisions in the SEDIMOT II model







                                                                  ENGINEERING AIDS REPORT - PAGE 4
  to allow evaluation of a wide range of sediment control technologies is a seamless manner.
  These modifications present South Carolina with the opportunity to have a major new tool in
  the analysis and design of stormwater and sediment control structures. Input data bases were
  generated for all major land resource regions and results from almost half a million runs of
  the model were used to develop the simple design aids.

  The tour of South Carolina construction sites revealed that channel erosion was a significant
  problem in many watersheds, indicating a need for a channel erosion component to the
  model.  The existing routine in SEDIMOT II allows only for deposition in channels, no
  erosion.

  The tour of South Carolina also showed that filter fences were often not put on the contour,
 but were placed to allow flow to move along the fence to a low spot. This flow frequently
 caused significant erosion along the fence and undercutting of the fence, making the fence
 ineffective. It was postulated that a saw tooth type arrangement on the fence would prevent
 this erosion, but no method was available to predict the effectiveness of the fence under this
 condition. This required that a method be developed to determine the location of points
 where flow would move through the fence.

 After investigating possibilities for modifying the existing routines in SEDIMOT II, it was
 determined that the inaccuracies in hydraulic routing when the pond routine is used for small
 structures and the lack of adequate sedimentation routines in the check dam routine meant that
 a major program modification was necessary.  Because of the availability of a new hydraulic
 routine that is accurate over a wide range of structural sizes and types, it seemed prudent to
 make such a modification.  The process used was to:

        Develop a common model for reservoir routing which utilizes continuous functions for
        discharge and stage storage rather than discrete stage points.

  *   - .Develop physically based and tested methodologies for predicting stage discharge
       relationships for commonly used sediment control structures.

    *  Combine these routines with the CSTRS routines  used in SEDIMOT II.

       Modify the model to include channel erosion.

 *     Evaluate the effects of a saw tooth arrangement on filter fence effectiveness.

Each of these tasks has been accomplished and the results are a series of graphs that can be
used as an aid for designing sediment control structures. It should be recognized that aids
such as these are developed for typical conditions.  Other methods should be used if the
situation is environmentally sensitive or hazardous. In all cases, good engineering judgement
should be considered as an essential ingredient in design.
                        /








                                                               ENGINEERING AIDS REPORT- PAGE 5

                                        Design Aids

Each of the design aids will be briefly described and then examples will be used to
demonstrate their use in realistic problems. The first aid (Figure 1) plots particle settling
velocity as a function of eroded particle diameter. Each of the structures requires use of a
reference settling velocity. The diameter that is referred to as D15 was chosen for the
reference diameter. This diameter corresponds to a point on the eroded particle size
distribution curve such that 15% of the particles (by weight) are equal to or smaller than this
size. Personnel from the former S.C. Land Resources Commission have previously
developed estimated eroded size distributions for South Carolina soils. The procedure used
the primary particle size information reported by the Soil Conservation Service as part of
county soil surveys. The information is now available from S. C. Department of Health and
Environmental Control. By plotting "fraction finer than" versus "diameter," Ds can be read.
Once D15 is found, settling velocity can be read directly from Figure 1.

Figure 2 plots the ratio q,/AV,5 versus percentage of trapping efficiency.  For ponds, the
ratio is defined by

                        Ratio =   qpo                                                      (1)


where q,. is peak outflow rate from the pond in cfs, A is the surface area of the pond at the
riser crest in acres, and V1, is settling velocity, in fps, of the characteristic eroded particle
corresponding to D15. Upper limits on site conditions for ponds are included with Figure 2.

Two curves are presented. The curve shown as Figure 2a for soils including Piedmont,
Sandhill, Coastal, and Tidal area soils, except as noted subsequently. For the Piedmont,
Coastal, and Tidal areas, soils are classed as either coarse (sandy loam), medium (silt loam),
or fine (clay loam). Sandhill soils include coarse (sand), medium (sandy loam), and fine (silt
loam) because of the prevalent textures in this region. These classifications are summarized
in Table 1. The line shown as Figure 2b is for tidal soils (sands and sandy loams that are
classified in hydrologic soil group D because of high water table). The ratio should be less
than or equal to the curve value at any given trapping efficiency. For example at 80%
trapping efficiency, the ratio is equal to 2.2E5 for most soils as shown in Figure 2a.  If the
ratio qpc AV,5 intersects the curve at a point having a trapping efficiency less than the desired
value, the design is inadequate and must be revised. Ratios above the design curves are not
recommended for any of the design aids.








                                                               ENGINEERING AIDS REPORT - PAGE 6


                                           Table 1
                              Soil Groupings for Design Aids
   Land Resource Region              Coarse                Medium                 Fine
  Piedmont, Coastal and       Sandy Loam              Silt Loam             Clay Loam
  Tidal
  Sand Hills                  Sand                    Sandy Loam            Silt Loam
  Tidal (High Water Table)   Sandy Loam               Silt Loam             Clay Loam

The next design aid (Figure 3) is for rock ditch checks.  Again there is a ratio plotted versus
trapping efficiency. For rock ditch checks the ratio is calculated as

                      Ratio =   a(2)


where S is the channel slope in percent, q is flow through the check in cfs/ft, V,5 is the
settling velocity, in fps, of the eroded D15 size particle in mm, and a and b are coefficients.
Figure 3 also contains upper limits for site conditions appropriate for the design aid.

The ratio is calculated using the curves developed in Haan et al. (1994)2 to obtain the
coefficients a and b. The three plots shown as Figure 3a, 3b, and 3c correspond to fine,
medium, and coarse textures, respectively. Please refer to Table 1 for determination of
which line to use for a particular soil. As indicated by the note in the gray area above the
lines, values of the ratio in Figure 3 should be equal to or less than the curve values.

The design aid shown as Figure 4 corresponds to silt fence placed in an area downslope from
a disturbed area where it serves to retard flow and cause settling.; Two conditions must be
met in order to have a satisfactory design.

  1.  Trapping efficiency must meet the desired level of control.
  2.   Overtopping of the structure must not occur, since failure is likely if it does occur.

As with any structure, the design should recognize that longterm maintenance is necessary.
The fence design aid contains a single line that is appropriate for all soil textures as shown in
Figure 4. Again Xthe ratio is plotted versus trapping efficiency.  For the silt fence, the ratio is
calculated as
                      Ra tio =                                                             (3)




             :Haan, C.T., B.J. Barfield, and J.C. Hayes.  1994. Hydrology and
              Sedimentology of Small Catchments. Academic Press. San Diego, CA.








                                                                ENGINEERING AIDS REPORT - PAGE 7

where q, is peak outflow through the fence in cfs, V1s is settling velocity, in fps, of the
eroded D15 size particle, and P,, is the potential ponding area upslope of the fence in ft2.
Figure 4 includes a listing of upper limits for the site conditions for the fence design aid.

The ponded area can be estimated by reducing the height of the fence by 1.0 ft (to allow for
burying 0.5 ft and 0.5 ft for freeboard). Use the remaining height to find the distance of a
horizontal line extending from the fence top to its intersection with the ground surface up
slope of the fence (should be equal to the ground slope times the fence height). Multiply this
distance by the available width for ponding to obtain the potential ponding area. As for other
structures, the final filter fence ratio value should be less than or equal to the line value for a
specified trapping efficiency.

                                        Estimating V,,

A common feature of each of the design aids is that a characteristic settling velocity for the
eroded soil must be obtained. For these design aids, the characteristic settling velocity
required corresponds to an eroded size such that 15% of the sediment has particles smaller
than the size specified. A diskette containing acceptable eroded size distributions for South
Carolina soils is available from the South Carolina Department of Health and Environmental
Control. The user should recognize that eroded size distributions used in sediment control
design are frequently quite different from primary size distributions that are often determined
for other construction purposes. The user should note that DIs is often smaller for coarse
textured (more sandy) because of the reduced clay content and the lack of aggregation.

                                      Example Problems

The example problems serve to illustrate the use of the design aids for calculation of trapping
efficiency for various types of structures. Basic soils, hydrologic, and hydraulic information
are combined. Methods as required by Standards for Stormwater Management and Sediment
Reduction (72-300) may be used to estimate the peak flows. Site specific soils information
can generally be found from county soil surveys. Hydraulic information is obtained by
combining site and structural information.

In all cases, a ratio is calculated. The ratio is used to locate the point on a turning line for
the specified conditions and structure. Trapping efficiency is then found by turning to the x-
axis and estimating trapping efficiency. The design aids are intended to be slightly
conservative, but use of the design aids should not override use of good engineering
judgement.  Questionable results should be investigated by the engineer.  In addition, the
engineer should consider installation and maintenance of all structures. For example, it may
be appropriate to add baffling to a pond in order to prevent short circuiting between the
inflow and outflow locations.

The user should recognize that the intent of the design aids is to provide an estimate of
trapping efficiencies for "typical" structures. Extreme or critical situations necessitate that







                                                                  ENGINEERING AIDS REPORT- PAGE 8

  more detailed analyses be conducted. For example, sensitive areas in steep terrain would be
  an example of an extreme situation. Additionally, it is not the intent of this document to
  present detailed descriptions of hydrologic or hydraulic methods.

  Design techniques can best be illustrated by following the steps shown in the following
  examples.


 Examdle Problem 1 - Sediment Pond.

 A sediment pond is to be constructed on a 30-acre commercial site in Richland County, SC.
 The following information is available for the site based on soil, hydrologic, and hydraulic
 conditions.

        The eroded size distribution is for a coarse soil (Pelion and Fuquay mix) with Dls
        equal to 0.024 mm.
        Peak outflow from the pond cannot exceed 11.2 cfs.
        Allowable surface area of the pond at the riser crest is 1.67 ac.

 Determine whether the sediment pond' is adequately sized for satisfactory trapping.

 Solution:

 Steps
  -  1.   Go to Figure 1 with Di5 = 0.024 mm and determine settling velocity V,5 = 0.001 fps.
  2.   Calculate the ratio q,/AV,5= 11.2/(1.67)(0.001) = 6700 = 6.7E3
  3.   Enter Figure 2a on y-axis with ratio = 6.7E3, go to line and turn to x-axis to read
        trapping efficiency.
  4.   Trapping efficiency is approximately equal to 92%, therefore okay.


Examnle Problem 2 - Sediment Pond.

A sediment pond is to be constructed in a tidal area having a high water table. The following
information is available for the site near the coast.

       The eroded size distribution is for a coarse soil with Dis equal to 0.04 mm.
       Peak outflow from the pond is 10 cfs.
       Allowable surface area of the pond is 0.25 ac.

Determine whether the structure will provide at least 80% trapping.








                                                                   ENGINEERING AIDS REPORT - PAGE 9
  Solution:

  Steps
    1.   Go to Figure 1 with D,5 = 0.04 mm and determine settling velocity V,, = 0.004 fps.
   2.   Calculate the ratio qpo/AV1s= 10/(0.25)(0.004)= 10,000 = 1.0E4
   3.   Enter Figure 2b (since high water table) on y-axis with ratio = 1.OE4, go to line and
         turn to x-axis to read trapping efficiency.
   4.   Trapping efficiency is approximately equal to 77%, therefore a larger pond is required
         if it is desired to have a trapping efficiency of at least 80%:.
   5.   Assume that surface area can be increased to 0.67 ac, calculate the ratio qpo/AV15=
         10/(0.67)(0.004) = 3700 = 3.7E3.
   6.   Reading the trapping efficiency from Fgure 2b using this value yields a trapping
        efficiency of 81%, which is okay.  (Note: If there had been no high water table,
        Figure 2a would be used, and the smaller pond area would be sufficient.)


 Examnle Problem 3 - Rock Ditch Check.

Estimate the trapping efficiency of a rock ditch check to be installed in a Piedmont channel
draining a clay loam soil. The following information is available based on soil, hydrologic,
and hydraulic conditions.

        The eroded size distribution is for a fine soil with D,5 equal to 0.0042 mm.
       Peak outflow from the ditch check is 0.211 cfs with an average width (perpendicular
       to flow) of 7.4 ft and a flow length through the check of 6 ft (refer to Haan et al.,
       1994, page 151 for procedures to calculate flow through a ditch check).
       Rock diameter is 0.10 ft.
       Slope of the channel is 0.5%.

Solution:

Steps
 1.   Go to Figure 1 with D5, = 0.0042 mm and determine settling velocity V15 = 3E-5 fps.
 2.   Before proceeding further, the flow rate must be converted to a flow per foot width.
       Thus divide 0.211 cfs by the width of 7.4 ft to obtain a q = 0.028 cfs/ft.

      Appropriate values of the coefficients a and b can be obtained from Haan, et al. (1994)
      based on the rock diameter and the average flow length through the check. For this
      example, the appropriate values can be read using the rock diameter equal to 0.03 m
      and flow length equal to 6 ft to obtain a = 3.05 and b = 0.66.

      Substitute all values and calculate the ratio

             Sq( l)/aV,, = (0.5)(0.028('466) )/(3.05)(3E-5) = 1620 = 1.62E3


                                             :   :         X             f         :~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~







                                                                 ENGINEERING AIDS REPORT:- PAGE 10
    3.   Enter Figure 3a on y-axis with ratio = 1.6E3, go to line and turn to x-axis to read
         trapping efficiency.
    4.   Trapping efficiency is greater than 95%, therefore okay.


  Examnle Pmroblem 4 - Rock Ditch Check

  A rock ditch check is to be installed at a Coastal Plains site having a sandy loam soil. For
  comparison, hydrologic and hydraulic conditions as used in Example Problem 3 will be used.

         The eroded size distribution is for a fine soil with DI5 equal to 0.04 mm.
         Peak outflow from the ditch check is 0.211cfs with an average width (perpendicular
         to flow) of 7.4 ft and a flow length through the check of 6 ft.
         Rock diameter is 0.10 ft.
         Slope of the channel is 0.5%.

 Determine whether the ditch check will exceed 80% trapping efficiency for the conditions
 indicated.

 Solution:

 Steps
   1.   Go to Figure 1 with DI5 = 0.04 mm  and determine settling velocity V,5 =  2.8E-3 fps.
  2.   Before proceeding further, the flow rate must be converted to a flow per foot width.
        Thus divide 0.211 cfs by the width of 7.4 ft to obtain a q = 0.028 cfs/ft.

        Since the same conditions were used, values of the coefficients a and b are as found in
        Example Problem 3 so that a = 3.05 and b = 0.66.

        Substitute all values and calculate the ratio

               Sq(b)/aV15 = (0.5)(0.028(I'66) )/(3.05)(2.8E-3) = 17

  3.   Enter Figure 3c on y-axis with ratio = 17 and go to line. Note that since the value
       falls BELOW the line, the trapping efficiency exceeds 95%.
  4.   Trapping efficiency is greater than 95%, therefore okay.


Example Pmblem,5 - Rock Ditch Check.

A rock ditch check is to be installed in a channel draining highway construction on a sandy
loam soil in the Coastal Plains. The following information is available based on soil,
hydrologic, and hydraulic conditions.

       The eroded size distribution is for a fine soil with D,5 equal to 0.04 mm.
       Peak outflow from the ditch check  is 2.0 cfs with an average width (perpendicular to







                                                                :ENGINEERING AIDS REPORT - PAGE 11

         flow) of 4.4 ft and a flow length through the check of 6 ft.
         Rock diameter is 0.10 ft.
         Slope of the channel is 1.0%.

 Determine the trapping efficiency under. the specified conditions.

 Solution:

 Steps
   1.   Go to Figure 1 with D,5 = 0.04 mm and determine settling velocity V,5 = 2.8E-3 fps.
   2.   Before proceeding further, the flow rate must be converted to a flow per foot width.
        Thus divide 2.0 cfs by the width of 4.4 ft to obtain a q = 0.45 cfs/ft.

        Appropriate values of the coefficients a and b can be obtained from Haan, et al. (1994)
        based on the rock diameter and the average flow length through the check. For this
        example, the appropriate values can be read using the rock diameter equal to 0.03 m
        and flow length equal to 6 ft to obtain a = 3.05 and b = 0.66. Substitute all values
        and calculate the ratio

               Sq(-b)/aVI = (1.0)(0.45('O6-) )/(3.05)(2.8E-3)= 90

  3.   Enter Figure 3a on y-axis with ratio = 90, go to line and turn to x-axis to read
        trapping efficiency.
  4.   Trapping efficiency is greater than 95%, therefore okay..


Example Problem 6 - Filter Fence at Toe of Slone.

A wire-backed silt fence is to be built from fabric which is 3 ft wide. the installation is to
be at the toe of a slope which drains highway construction in the Piedmont. The following
information is available based on soil, hydrologic, and hydraulic conditions at the site.

       The eroded size distribution is for a fine soil with D15 equal to 0.0042 mm.
       Peak outflow from the up slope area is 1.9 cfs.
       The potential area for impoundment up slope of the fence is 0.116 ac. (5050 ft2).
       Freeboard. allowance and installation will reduce the usable height of the fence from 3
       ft to 2 ft.
       The potential length of filter fence along the toe of the slope is 60 ft.

Determine whether the fence will carry this flow with a trapping efficiency of at least 80%
without overtopping.

Solution:

Steps
 1.   Go to Figure I with D,5 = 0.0042 mm and determine settling velocity V,5 = 3E-5 fps.









                                                               ENGINEERING AIDS REPORT - PAGE 12

 2.   Calculate the ratio qpoNVPa= 1.9/(3E-5)(5050) = 12.5,
 3.   Reading the trapping efficiency from Figure 4 with the ratio equal to 12.5 finds that
       the trapping efficiency is approximately 55% -- hence the fence is inadequate.


ExamDle Problem 7 - Filter Fence at Toe of Slone.

Reconsider the situation described in example problem 6 with the only difference being that
the D15 is 0.04 mm. Determine whether the fence will carry this flow with a trapping
efficiency of at least 80% without overtopping.

Solution:

Steps
 1.   As seen previously, V,5 equals 2.8E-3 fps for this size particle.
 2.   Calculate the ratio qpO/VP,r,= 1.9/(2.8E-3)(5050) = 0.13
 3.   Reading the trapping efficiency from Figure 4 with the ratio equal to 0.13 finds that
       the trapping efficiency is approximately 82% -- hence the fence is adequate from the
       standpoint of trapping efficiency.
 4.   The length of fence required to pass the peak flow without overtopping can be found
      by comparing the peak flow per foot width with the slurry flow rate of the fabric.
      Haan, et al. (1994, Table 9.11 and 9.12) contains slurry flow rates for a variety of
      fabrics. A reasonable value for filter fence is 10 gpm/ft2.
 5.   Convert the peak flow to gpm so that
              qO= (1.9 ft3/sec)(7.48 gal/ft3)(60 sec/min) = 853 gpm
 6.   The required length of fabric to carry this flow can now be found by dividing the peak
      flow rate by the effective height (2 ft since I ft is lost because of installation) and the
      slurry flow rate. Hence, the length of fence required to carry the peak flow without
      overtopping is

             L = 853/(2)(10)= 43 ft

      Since 43 ft is less than the 60 ft available, the fence will perform adequately.
       S;~ ~ ~ ~ ~~ ~t abe the::   fe c wil pe:r  adequately.








                                                      ENGINEERING AIDS REPORT -PAGE 13

















      I -  ................. ......................
              IE~~~~~~~~~~~~~~~~~~~~~~~~~~.... -2--    ......~ ........

       I E-2   .................~


      IE-3



       I E-4



               0.001            001~                   ~~~~~~~~~~~~~co 0.11
                    ERODED PARTICLE DIAMETER (mm)


Figure 1. Settling velocity as a function of eroded particle diameter.








                                                              ENGINEERING AIDS REPORT - PAGE 14


                    LIMITS ON VALUES FOR PONDS

                    watershed area :5 30 acresI

                    overland slop eï¿½20I

                   loutlet diameter ï¿½ 6 ft
















      1ES
                        -~~~~~ ~         ~~~            ~~~~~ . .. . ... .. . . ...... .........................





  I E4 .-..-.-...
           0~~ ~ ~~~~~~~~~~~~~~~~ . _  __ .--.       ....--     -  -  - .-.-       .   ........ .....

                        1E3  ~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~.-...    .   -.--.-. ....


  1E2
                       70~~~~~~~~~~~~~~~~~~~. 75  80      8.   ..... .95.......
    Cr ~ RPIN  FIIEC  %

Figur  .a.  .eig  ............. for trappi.   .....yofpnsnt  oae   no-ynaeswt
              high water~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.... tbe...........








                                                       ENGINEERING AIDS REPORT - PAGE 15


                    LIMITS ON VALUES FOR PONDS
                    watershed area:5 30 acres
                    overland slope < 20%:
                   Ioutlet diameter:5 6 ftI











              I ES .        . . . ...    ...                    . ....


         1E4 --.- --or






      1Er

         IEI


            70             75   so                        85             90              95
                    TRAPPING EFFICIENCY(%

Figure 2b. Design aid for estimating trapping efficiency of ponds located in low-lying areas
having high water tables..







                                                    ENGINEERING AIDS REPORT - PAGE 16


                         LIMITS ON VALUES FOR
                         CHECKS
                         watershed areas <   5 acres
                         overland flow length 5 500 ft
                         overland slope < 15%
                         maximum depth _< 6 ft









       1E5















       1E3
           60    65   70    75    80   85    90    95
                         TRAPPING EFFICIENCY (%)

Figure 3a. Design aid for'estimating trapping efficiency of rock ditch checks with fine
texture soils.







                                                               ENGINEERING AIDS REPORT - PAGE 17

                               LIMITS ON VALUES FOR
                               CHECKS
                               watershed areas < 5 acres
                               overland flow length < 500 ft
                               overland slope < 15%
                               maximum depth < 6 ft









            ~    --      :=~-=~:-~= :            '=:      :-:-.~     : ?- :'--:::::-:::':
                I  . .......... . .- ........... .. .... . ........... ...............
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~.M _. _    ...... _... .__.... _ _._._












             60    65    70    75    80   85    90    95
            > 1E4 __ ~~~~~~~~......... __. ....___._ ......__









                               TRAPPING EFFICIENCY (%)

Figure 3b. Design aid for estimating trapping efficiency of rock ditch checks with medium
texture soils.
                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~. ::.::..... :._ ::::= .:_=.: :_ ::
           cn _____ .......... . . __............ _...... _. ............ _............._.
                          . .. =. ..... _ ......~~. ........ . ... .. . ....... .. . ........ ....   ......._.............



        I1E3                                    j                                         _
             60         65   :70    :75:   80 i:86    90                                   95
                               TRAPPING EFFICIE0NCY(%

Figure 3b. fDesign aid for testimating trapping efficiency of rock ditch checks with medium
texture soils.:  







                                                 ENGINEERING AIDS REPORT - PAGE IS

                        LIMIT ON VALUES FOR
                        CHECKS
                        watershed areas:ï¿½ 5 acres
                        overland flow length ï¿½ Soo ft
                        overland slope < 15%
                        maximum depth < 6 ft









      I E4                 -         -
                                     --~~~ ~~ ~~~~ ~ ~~~~~~~~~~~~~~~~~~~~~.. . - . -..1 1 7





     'I E3 .... .....

        Er oi,-..---z~.





      1E2
            60~~ 65    7 0   75  ~80   85   90    95
                        TRAPPING EFFICIENCY(%

Figure 3c. Design aid for estimating trapping efficiency of rock ditch checks with coarse
texture soils.








                                                       ENGINEERING AIDS REPORT - PAGE 19

                        LIMIT ON VALUES FOR FENCE
                        watershed area -< 5 acres
                        overland flow length ~5 500 ft
                        overland slope < 6%
                        slurry flow rate < 10-gpmlft'
                        maximum height < 3 ft












                        I~~~~~~~~~~~~ 0



                                   ~~~~~~~~~~~~~~~~~~~~~~~~...  . .. -~







       0.01
            50  55  60  65  70  75~ 80  85  90  95
                           TRAPPING EFFICIENCY(%


Figure 4. Design aid for estimating trapping efficiency of silt fence.



























                  APPENDIX H

        RAINFALL DATA FOR SOUTH CAROLINA







C~~~~~~ 










                                                    South Carolina Rainfall Data


 COUNTY NAME                               RETURN PERIOD 24 HOUR STORM EVENT (INCHES)

                                           1         2          5          10        25         50         100             R Factors


 Abbeville                                 3.2        3.7        4.8       5.7        6.5        7.0       8.0             250
 Aiken                                     3.2        3.7       4.9        5.8        6.7        7.3       8.0             250
 Allendale                                 3.4        3.9        5.1       6.0'       6.9        7.8       8.5             300
 Anderson                                  3.3        4.0        5.2       5.9        6.7       7.5        8.0             275
 Bamberg                                   3.4        3.9        5.2       6.0        6.9       7.8        8.5             300
 Barnwell                                  3.3        3.9        5.1       5.9        6.9       7.7        8.2             275
 Beaufort                                  3.7        4.5       '5.9       6.8        7.8        8.8       10.0            400
 Berkeley (North)                          3.5        4.2        5.5       6.4        7.3       8.2        9.3             350
 Berkeley (South)                          3.6        4.4        5.7       6.7        7.6        8.5       9.8             350
 Calhoun                                   3.3        3.8       5.0        5.9        6.7       7.5        8.2             275
 Charleston                                3.8        4.6        5.9       6.8        7.8       8.8        10.0            400
 Cherokee                                  3.0        3.5       4.5        5.0        6.0       6.7        7.0             275
 Chester                                   2.9        3.5       4.5        5.1        6.0        6.8       7.3             250
 Chesterfield                              3.1        3.7       4.8        5.5        6.3       7.2        7.9             275
 Clarendon                                 3.4        4.0        5.1       6.0        6.9       7.8        8.7             300
 Colleton (North)                          3.5        4.2        5.4       6.3        7.2       8.0        9.1             350
 Colleton (South)                          3.6        4.4        5.7       6.7        7.7        8.5       9.6             350
Darlington                                3.2        3.8        5.0       5.7        6.5        7.5       8.3              300
Dillon                                    3.3        3.9        5.2       5.9        6.8        7.8       8.6             325
Dorchester (North)                        3.4        4.2        5.4       6.3        7.2        8.0       9.1             325
Dorchester (South)                         3.6       4.4        5.7       6.7        7.6        8.5       9.6             325
Edgefield                                  3.2       3.7        4.7       5.7        6.5        7.1       7.9             250
Fairfield                                  3.0       3.5        4.5       5.3        6.1        6.9       7.6             250
Florence                                   3.3       4.0        5.2       6.0        6.8        7.8       8.8             325
Georgetown                                 3.6       4.5        5.7       6.7        7.7        8.7       9.8             350
Greenville (North)                        4.0        5.0        5.8        6.1       7.3        8.2       8.8             300
Greenville (South)                         3.4       4.0        5.0       5.7        6.6        7.3       8.0             300
Greenwood                                  3.1       3.7        4.7       5.6        6.4       7.0        7.8             250
Hampton                                    3.44                           6.3        7.2        8.0       8.9              325
Horry (North)                              3.4       4.0        5.4       6.3        7.3        8.2       9.3             350
Horry (South)                             3.6        4.5        5         6.         7.6        8.6      .9.7 7.350
Jasper                                     3.5       4.3        5.7        6.7       7.6        8.3       9.3              350
Kershaw                                    3.1       3.7        4.7       5.5        6.3        7.2       7.9              275
Lancaster                                  3.0       3.6        4.6       5.3        6.1        7.0       7.6             250
Laurens                                    3.1       3.7        4.7        5.5       6.2        7.0       7.7              250
Lee                                        3.2       3.8        5.0       5.7        6.5        7.5       8.3              275
Lexington                                  3.1       3.7        4.8       5.6        6.5        7.2       7.9              250
Marion (North)                             3.3       3.9        5.3       6.0        6.9        7.8        8.8             325
Marion (South)                             3.4       4.2        5.4       6.3        7.2        8.2       9.2              325
Marlboro                                   3.2       3.8        4.9        5.7       6.6        7.6       8.2              300
McCormick            -                     3.2       3.7        4.8        5.7       6.5        7.0       7.5              250
Newberry                                   3.0       3.6        4.5       5.4        6.1        7.0       7.5             250
Oconee (North)                            4.5        5.3        7.0       8.0        9.1        9.8        11.0            300
Oconee (South)                             3.5       4.6        5.8       6.5        7.5        8.0       9.0              300
Orangeburg                                 3.3       3.9        5.2   :   6.0        6.8        7.7       8.5              275
Pickens (North),                           4.2       5.3        6.8        7.2       8.7        9.0        10.4            300
Pickens (South)                            3.7       4.7        5.8        6.3       7.5        8.3       9.2              300
Richland                                   3.1       3.7        4.8        5.7       6.4        7.3       7.9              275
Saluda                                     3.1       3.7        4.7        5.7       6.4        7.3       7.9              250
Sparnbur  NE                               Suggest use of National Weather Bureau
Spartaburg NW                              Publication Technical Paper 40.
SpartanburgSE                              Rainfall data in this area must be
Spartanburg SW                             predicted carefully.
Sumter                                     3.2       3.8        5.0        5.8       6.6        7.6        8.3             275
Union                                      3.0       3.5 .      4.5        5.1       6.0        6.8        7.4             250
Willimsburg                                3.4       3.5        5.4        6.3       7.2        8.1        9.2             325
York                                       2.8       3.5        4.5        5.0       6.0        6.7        7.0             250
























                APPENDIX I

SAMPLE STORMWATER MANAGEMENT AND SEDIMENT

   REDUCTION BEST MANAGEMENT PRACTICES











                                                                                         .HR           .         P.A...... DESIGN
       lIMP                   D - : 1*0 IEFINITION   ii    iOSE   .                   APPLICAI                    CONSIDE ATIN .                  CRITERIA
                      :      ï¿½                          :-.   ï¿½ï¿½                                     ï¿½ï¿½ 

SEDIMENT
CONTROL
PRACTICES

SurfaceRoughening   Horizontal grooves across           Aids establishment      All bare soil; all slopes-:     Method for surface           No formal design is
                      bare slopes,: stair stepping,     of vegetation,        especially those steeper than   roughening based on          necessary
                      or tracking bare soil with;     reducesrunoff          . 3:1:                            slope steepness, mowing
                      construction equipment          velocity and             ;                               requirements, and
Figure I:  ::                                          erosion, and        ;       -                            whether slope formed by
                                                     increases infiltration                                  cutting and filling

Top Soiling            Using topsoil: to enhance       Provides suitable:,  May be used in areas where    Topsoil stockpiles should   No design criteria is
                      final stabiization-of site      growth m        eiu m for    existing soil is not suitable    be protected from       necessary
                      withvegetation  :-            : vegetation  for vegetation                               erosionand
                                                                                                          contamination


Mulching               Use of a protective blanket    To protect soil          May be used on beds for           Avoid organic mulch that   Organic mulches are
                      of straw, plant residue,        surface from forces    temporary or permanent   :   may contain weed seeds   most effective when
                      gravel or synthetic material    of raindrop impacts,   seeding and on areas of bare                  :  uniformly spread and
                      on soil surface                 overland or sheet       soil when seeding or             Choiceofmulchshould    esecuredtothesoil
                                                     waterflow               planting must be delayed        bebased on season, type   structure
                                                                                                          of vegetation, soil
                                                                                                          condition, and size of
                                                                                                          area






















                 Bulldozer treads create
      grooves prpendicular to hEN slape. Th
     slope  aoe should not be back-bladed 
      during the Frini grading operalion

                                           5X hhI:Ii~~h~a- ::                        :..."


                                                Slope  ... -.-               .




                                                                 A'.

                                                                :  '  X       * '
















   Figure 1. Surface Roughening












Source: North Carolina Erosion and Sediment Control
      Plannirn and Desion Manual 1988.










                                                                                            WHERE               PL~~~~ANNING'i:              DFSIGN,:


Temporary             A gravel driveway or pad       Provides a suitable    May be used wherever           C     onstruction plans     Aggregate Size:
(3Graveled   :        located at a point where       location for vehicles    traffic leaves a construction    should limit traffic to  2"-3" washed stone
Construction Site     vehicles enter and exit a      to drop mud and        site and enters a public road    properly constructed      Pad Thickness:
Entrance/Exit    -   construction site:    .    -   sediment before         or other pavedareas            entrances to the site       6" minimum
                                                     entering public                -    : .     :                    I:.Pad Widths:
                                                     roads; controls                                                                   12' minimum
                                                    erosion from surface                                                              Pad Length:
Figure 2  .             ::                           runoff and to help       :    :                                                   50' minimum
                                                    control dust
Temporary Seeding   Planting fast-growing            To provide             May be used on cleared,        Selection of appropriate    No design criteria is
                      vegetation to provide          stabilization of bare   unvegetated areas where       plant species, use of       necessary
                      temporary erosion control      soil areas that will    temporary erosion control is   quality seed, and proper
                                                    not be brought to      needed                         bed preparation are
                                                    final grade for a                                     important
                                                    period of more than
                                                    30 working days
Permanent Seeding    Control of runoff and           To economically        May be used in fine-graded    Planting should occur         No design criteria is
                      erosion with permanent        control erosion and    areas                           within 30 working days      necessary
                      vegetation                     sedimentation                                         or 120 calendar days of
                                                                                                          final grade

                                                                                                          Same as for temporary
                                                                                                          seeding

Sodding               Use of grass sod to            To rapidly prevent     May be used in areas            More costly than            On slopes, sod should
                      permanently stabilize an       erosion and            requiring immediate and        seeding, but can be         be applied with longest
                      area                           sedimentation          permanent vegetative cover    established during times    dimension
                                                                                                          of year when grass seed    perpendicular to slope
Figure 3                                                                                                   may fail





























                          GRAVEL CONSTRUCTION ENTRANCE




                      CONSTRUCTION ENTRANCE WITH WASH RACX~



                                                '--Ditc'h to Carry
                                                    wash water to
                                                    Sediment Basin or

                               sh    Rack ~~~~rapI













                   -Reinfw-ced Cohcrete        Lri  Spa~ce
                              Detail of Wash Rack




Figure 2. Temporary Construction Entrance


Source: Storm Water and Erosion: and Sediment Control Best Manmoement Practices for
      Develovina Areas. Florid


















         F  .. -T-- :          *... . '     ,-T-  _.  [         Lay sod in a staggered
         1 '       ..          .. 1 -"o    _ *         .     n  pattern with strips butted
                                    ,.,,-~~~~~  * *  *    _tightly against each other. A
                   '--'" "                      . ..  .~ '"...  '  -- wsharpened mason's trowel can
                                       - * --   , ï¿½  _ -     _ ...  0  be used to tuck down the ends
                               i_....          - -i.7. i' .... .. ï¿½ :?.   0and trim pieces.



              1[  ;   : Correct  ;) I           Butting-angled ends caused by the automatic
         m_  : 0r : Incorrt _    -  :sodcutting must be matched correctly.










         ll" ï¿½iï¿½, _  .
                                       ï¿½Iï¿½     I








         Roll sod immediately to       Water to a depth of 4  Mow when the sod is es-
          achieve firm contact          as soon as the sod is     tablished (2-3 wks). Set
         with the soil.                laid, and continue        the mower high (2-3").
                                       watering as needed.
           Proper instalation of grass od




     Figure 3. Soddinge







Soeurc: North Carolina Erosion and Sedbment Control
      Plannino and Desion ManuaL 1988.










                                                                                             WHERE              ~~PLANIUNGDSN
         BP       -      .   DEFINITION....                      ON DERATION                                                                .      ERA

Outlet Stabilization   Structure designed to         To prevent erosion    May be used at locations         Riprap aprons are           Capacity:  10 year
Structure             control erosion at the outlet   by reducing water      where water velocity from a   relatively low cost and      peak runoff or design
                       of a channel or conduit        velocity from the      conduit, channel, pipe,        easy to install             discharge of
                                                     outlet of a channel    diversion, etc. exceeds        Riprap stilling basins or    conveyance -
                                                     or conduit             permnnissible velocity of the  plunge pools are used       whichever is greatest
                                                                             receiving channel or           where overfalls exit the
                                                                             disposal area                  ends of pipes or where
Figure 4                                                                                                    high flow would require
                                                                                                            excessive apron lengths
Excavated Drop        An excavated area in the       To trap sediment at    May be used where               Frequent maintenance is   Drainage Area:  I acre
Inlet Protection      approach to a storm drain      the approach to a       relatively heavy storm water   required                    Shape basin to fit site
(TI Cemporary)         drop inlet or curb inlet       storm water             flows are expected and         Temporary flooding of       conditions; orient
                                                     drainage system        overflow capability is         the excavated area is       longest dimension
                                                                             needed                         expected                    toward longest innflow
                                                                                                                                        area
                                                                                                                                        Maintain side slopes no
Figure 5                                                                                                                                greater than 2:1 (50%)


Fabric Drop Inlet     Temporary fabric barrier       To prevent sediment   May be used where storm    i This method must not be   Drainage Area:  Not
Protection            placed around a drop inlet     from entering the       drains inlets are to be        used near the edge of fill : greater than I acre
(Temporary)                                          storm drain during     operational before              material and must not       unless site conditions
                                                      construction           permanent stabilization of      divert water over cut or    allow for frequent
                                                      activities; allows     the drainage area occurs.       fill slopes                 removal of sediment
                                                      early use of storm     This method is used where                                   Height of Barrier: At
                                                     drain                  inlet drains a nearly level                                 least 12" - but no
                                                                             area with slopes less than                                 greater than 24"
Figure 6                                                                     5%                                                          Do not use mortar














                                               OtL~et; Stabilization


                             Pipe Outlet to Flat Area-















                                                            blanket      Notes
                                                                         1. La Is the length of the riprap
                              Pipe Outlet to Well-defined                    arn
                                       Channel                            2.  dm=1.5 times the maximum
                                                                           stone diameter but not less
                                                                           then 60.
                                                                         3. in a well-defined channel ex-
                                                                           tend the apron up the channel
                                     A A ~~~~~~~~~~banks to an elevation of 6-
                                     A                     A               ~~~~~~~~~~above the maximum tallwaler
                                                                           depth or to the top of the bank.
                                                                           whichever Is less.
                                                                         4. A filter blanket or filter fabric
                                      ( L  W        W                    ~~~~~~~~~should be Installed between
                             Plan                                            the riprap and sail foundation.








                             Iii ~iIi   SecionAA14
                                                            Filler
                                                            blanket





 Figure 4. Outlet Stabilization Structure


Source: North Carolina Erosion and Sediment Control
       Plannmno and Desion Manual, 1998.

















                                           Excavated area (as required)

          Side siope 2:1                                                            :_u e
                 0111 - - -      ï¿½1                                                         I' Accumulated
                                                                                   at     ) sediment

                        Excavated depth,  3       f     o r               1li       Gravel-supported by
                        min 1  -max 2' I --  dewalerin-g ja i           IIJl~       hardware cloth to allow
                        below top ol inlel    TI:                    i : -          drainage and restrict
                                         eflj, "                                   sediment movement.












                                      >--..
                                 ,~zc,ï¿½:f :-

                               Flow    - 


              Excavated drop inlt prtoclion.





      Figure 5. Excavated Drop Inlet Protection







Source: North Carolina Erosion and Sediment Control
      Plannmino and Desion ManuaL 1988.


















                                                                                  Stake
            2 x 4 wood frame
                         T~~~~~~~~~~~~~~~~~~~~~

                      max                                              ~ ~~~~~~~~~~~~~~~~~~~Fabric P.-'
    max



                        II Fin'~~Min

                   II     I     I rl                                        Buried fabric
                      V                                                     'ii


                         Drop inlet__   S
                         with grate                                   ___  )

                               : Frame                            ilmin



          -                                                      I 111P
                             ,-ï¿½~~~~ ---LIICL ~ ~ ~      ~      ~     ~      I
                                       excess
                         -~h     ,,  -,at corners


             Ingtullation of labric and auppotn  m Jar iforlNt protaion.






  Figure 6. Fabric Drop Inlet Protection








Source: North Carolina Erosion and Sediment Control
      Plannina and Desian Manual ï¿½988.











                        BMP   EINITION                   PU:::SE                   APPl:  IDA.iE  NI                I D  R  TION             CRITERIA 

Sod Drop Inlet        A grass sod filter area        To limit sediment      : May be used where the         This practice is well-      Drainage Area: No
Protection            around a storm drain drop      from entering storm   drainage area of the drop        suited for lawns adjacent   greater than 2 acres -
                       inlet in a stabilized well-   drainage system as a   inlet has been permanently      to buildings                this area should be
                      vegetated area                 permanent              seeded and mulched, and                                    undisturbed or
                                                     protection measure     the surrounding area is to                                 stabilized
                                                                             remain in dense vegetation                                 Velocity of design
                                                                                                                                        flow: Less than 5
Figure 7                                                                                                                                ft./sec
                                                                                                                                        Slope of Sodded Area:
                                                                                                                                        Not greater than 4:1
Temporary             A small temporary ponding    To detain sediment-    May be used at the outlets        Access to the basin must    Used to receive water
Sediment Trap         basin formed by excavation    laden runoff and to    of drains, diversions,           be maintained to            drained from areas of
                      or by an embankment            trap the sediment; to   channels, and other runoff    periodically remove         5 acres or less
                                                     protect receiving      conveyances; may be            sediment for proper         Side slopes of
                                                     lakes, streams,        installed during early site    disposal                    excavated basins - 2:1
                                                     rivers, and other      development                    Structure life limited to 2   or flatter
                                                     water bodies from                                     years                       Cleanout trap when
FigureS                                              sedimentation                                                                      sediment reaches 'h of
                                                                                                                                        the design depth
Sediment Basin         A suitably located earthen    To retain sediment      May be used where erosion    This practice applies to      Drainage area: less
                       embankment designed to        on the construction    control measures are not        structures 15' or less in    than 100 acres; flow
                       capture sediment               site and to prevent    adequate to prevent offsite    height, and whose failure   length to basin width
                                                     sedimentation of       sedimentation                   would not jeopardize        ratio should be greater
                                                     offsite bodies of                                     property or lives            than 2:1 to improve
                                                      water                                                 Basin life limited to 3     trapping efficiency
                                                                                                            years unless it is
Figure 9                                                                                                    designed as a permanent
                                                                                                            structure




















                                                       I I. N






                                   Four I ft wide strips of sod on each side of the
                                   drop inlet
             Sod strips pmct~ 'mitti awea from erosion





             Figure 7. Sod Dro  Wnet Protection








Source: North Carolina Erosion and Sediment control
      Planmina and Desion Manual. 1908.




















                                                                     ..  min 

                                 1800 cu ftl acre




                                                   Cross section                                Filter fabric


           Design
           Designle    21                                                                    Overlill 6'
           top  mi       n m                                                               / for settlement

                                                     I4 t                                                4min  .  , 7_
                       sit -%-._u2:1 side                                                                Emergency
                                    ~~~~~5 tt11 ~~~slope max                                             by-pss
                     max fil         Fller                                                               G' Dbelow
                        .fabric mI                        .             side slope                       seIed top
                                                                   31max                 Natural       of dam
                                                                0  ;  is C~1   \         ground
                                                     311 
                                                     min

                                                  Stone section
               Temporary sediment trap.







  Figure 8. Temporary Sediment Trap










Source: North Carolina Erosion and Sediment Control
       Plannino and Desion Manual. 19868.










                   SEDIMENT BASIN SCHEMATIC ELEVATIONS



                                                               Crest of
                                                              Emergency
                                                              Spilliway
     'Design High Water
                                     Min. 1.o0F
                                  Min. 1.01i
                              Mm.  i~~~oI         iser Crest

                                        ~~~Dewatering Outlet
         Sediment
         'Cleanout 
         Permanent Pool               L

                Design Elevations With Emergency Spillway















    ~~~~Dsg High Water                M.10      t
      44 1U6,1             Min .0 ino4L~L~. 3.0'
               \  M~~~mi. 1.0' 4
                                                  Riser Crest
                                                  Dew-atering Dutlet

     Permanent Pool

     *       ~~~Design Elevations Without Emergency Spillway




Figure 9. Sediment Basin


source: Storm water and Erosion and Sediment Control Best Manaoemnent Practices for
       Developing Areas. Florida










             *   j   g   X   <  3    jf  Deaf 5 gie~il..............DitMGN 0t 
                                         D~~~~~~~~WERE                                                         PLNINESG


Silt Fence            Temporary sediment barrier   To catch and hold        May be used below small        Sediment or silt fences    Fence should be stable
(Sediment Fence)      consisting of filter fabric or    small amounts of   disturbed areas less than '%    should be located in       for a 10 year peak
                     burlap stretched across       sediment from          acre per 100' of fence, and    areas where only shallow   storm runoff. Ensure
                     supporting posts and          disturbed areas by     where runoff can be stored    pools can form behind        that the depth of
                     entrenched                    reducing the           behind the fence without       them. Sediment              impounded water does
                                                   velocity of sheet      damaging the fence or the     deposition should be        not exceed 1.5' at any
Figure io and II                                     flow to allow         area behind the fence           periodically removed and   point along the fence
                                                   sediment deposition                                   properly disposed of

Straw Bale Dike       Temporary sediment barrier   To catch and retain    May be used below                Straw bale dikes should    Drainage area: No
                     constructed from a row of     sediment on the        disturbed areas subject to      never be built in live     more that 'A acre for
                     entrenched and anchored       construction site and   sheet and rill erosion where    streams, swales, or       everyoo 100' of barrier
                     straw bales                   prevent                temporary sedimentation        drainageways                length. Maximum
                                                   sedimentation         control is needed                                           slope gradient behind
                                                                                                                                  the barrier - no more
                                                                                                                                  than 2:1 (50%0).
Figure 12                                                                                                 I           XDesign life: Less than
                                                                              Figure 12  0~~~~~~~~~~3 months

Check Dam             Small, temporary stone dam   To reduce erosion        May be used as a temporary   Check dams should not         Drainage area above
                     constructed across a          of the channel by      or emergency measure to        be used in live streams     the check dam should
                     drainageway                    restricting the       limit erosion by reducing       Check dams installed in    not exceed 2 acres
                                                   velocity of flow in    flow in a small, open          grass-lined channels may    Maximum Height: 2'
                                                   the channel           channel                         kill the vegetative lining   at the center of the
                                                                                                        if submergence after rain   dam
                                                                                                        is too long or             Keep the center of the
                                                                                                        sedimentation is too        dam at least 9" lower
Figure 13                                                                                                  heavy                       than the outer edges at
                                                                                                                                   natural ground
                                                                                                                                   elevation


























                                                                                 Compacted fill


                                         Backfill min 8"
                                         thick layer of gravel
                                                                               /'Filter fabric






                                                            V-trench    :1               IlI ;


                                         Extension of fabric and wire
                                         into the trench
                                                          Filter fabric-











                Figure 10. lOSilt Fence




Source: North Carolina Erosion and Sediment Control
       Plannino and Desion Manual  198.













NOTE:
SILT FENCE TO BE INSTALLED BY LOT OWNER
PRIOR TO CONSTRUCTION AND TO BE               SILT FENCE
MAINTAINED UNTIL LOT IS GRADED AND          r AROUND ONSITE
TURF IS ESTABLISHED.                          DRAINAGE STRUCTURES    
                                 I       I : :(IF APPLICABLE)        SILT FENCE ALONG
                            .*1~~~~~  f  i;CRITICAL    LINE
                             -  =  =.  -~  _    -  _-    -   -_    _ -(IF   APPLICABLE)is
                  --  :--     1-            _     -       --
                     *      ::        ;     0i? 7m7m7I                    v      s
                                    SILT FENCE %,
                                      z ALONG  R/W    Xad MARSH
                                       ALO~~NE

                  I                 ~~~~~ACCESS  HE                       '4     '/
                                    CONSTR.  ~OSR


                          - v                     _           ~//---SILT FENCE ALONG
                                           Irams              >~- \  WETLAND BUFFER
                                                   *    V   /  *\    PROEl  (IF APPLICABLE)
                                          .  *   *   *\PROPERTY
                   Figure   1  LotSilFWEne PLINE                 /

                      :~~~~~~ :














            Figure 11. Lot Silt Fence Plan





















                                                 Sta ked and Entrenched
                                                  5ttaw sale


   Bindina Wlire
                                                          Compacted Soil to


                                                               Sediment Laden



















             CROSS-SECTION OF A PROPERLY lKSTALLED SMRA   BALE







'Figure 1.Straw Bale:Dike


Source: Storm Waler and Erosion and Sediment Control Best Manaoement Practices for
        Develovino Areas. Florida
























                                             A





                  Filer
                 fabric



                                 Ero~Secion Conro





          Ston check dam-Stan. should b placed ove tdo channel banks to keep water from cwnhg wround tedam.





                                L     The distance such that points
                                A and B are of equal elevation


                                    =4               ~~~~L




         Space chock dams in a channel so that the crest of downstream clam is at elevation of the too of upstream dam.


      Figure 13. Temporr Check Dam

Source: North Carolina Erosion and Sedirnent Controt
       Ptannino and Desian Manual. 1938.











        .  7  T:    ï¿½ :                    :Di  :        PURPOS.                   APPLICABLE .N                      E                     CRITERIA.... 

Sand Fence (Wind:   An artificial barrier of         To reduce wind         Maybe used in areas of         S. C. Coastal Council       Contact S. C. Coastal
Fence)                evenly spaced wooden slats    velocity at the         open, bare, sandy soil         has general design and      Council for design
                      or approved fabric erected    ground level and        subject to frequent winds,     installation requirements   criteria
                      perpendicular to the:   : :.trap blowing sand;:    where the trapping of             for sand fencing
                      prevailing wind               used to build frontal   blowing sand is desired
                                                      ocean dunes or
                                                      prevent sand from
                                                      blown off disturbed
                                                      areas and onto roads
                                                      or adjacent property

Vegetative Dune       Use of adaptive vegetation     To protect, maintain   May be used in coastal         Only tolerant plant         Small areas and steep
Stabilization         to catch and hold sand and     or rebuild a barrier    beachfront areas              species adapted to the      slopes should be
                      to build and repair dunes     dune system                                            dune environment can be   planted by hand; large
                                                                                                              used                       flat areas may be
                                                                                                                                          planted with a tractor-
                                                                                                                                          drawn transplanter













STORM WATER
MANAGEMENT
SYSTEMS
Grass-Lined           A channel with vegetative       To convey and           May be used as roadside        Should be located to         Peak capacity
Channels              lining for conveyance of        infiltrate              ditches, channels along        conform with and use the   minimum of 10 year
(Grassed Swale)        storm water runoff             concentrated surface   property boundaries, outlets   natural drainage system       storm without eroding.
                                                     runoff without         for diversion, and as          Avoid crossing ridges or    Velocity: No more
                                                     damage from.           drainage for low level areas.   watershed                    than 2 ft./sec without a
                                                     flooding, deposition                                  Avoid sharp changes in        channel liner
                                                     or erosion                                             grade or direction of        Side slopes: 3:1 or
Figure 14                                                                                                    channel                      flatter



Wet Extended           A permanent pool system        To provide              Most effective in large,       Pond should be designed    Maximum Depth: 6' to
Detention Pond        containing a forebay near       temporary storage of  intensely developed sites,       to hold post-development   8' for permanent pool
                      the inlet to trap sediments    storm water runoff    usually greater than 10 acres   peak storm water runoff    Littoral Shelf: Extend
                      and a deep pool for storage    before it is            This is generally the most     24 hours or more for         side slopes out 2' to 3'
                                                     discharged             cost effective practice for     90% particulate-form or    with slope of 6:1 or
                                                     downstream;            urban/coastal areas             suspended solid pollutant   flatter
                                                     protects the                                           removal                      Inlet structures
                                                     downstream channel                                                                  designed to dissipate
                                                     from erosion and                                                                    energy of water
                                                     sedimentation;                                                                      entering the pool
Figure 15                                             functions as a
                                                     sediment trap and
                                                     pollution filter



















                      TYPICAL GRASSED WATERWAY CROSS SECTIONS



    I nil(L


                 p. ~~~~~~,a  ~~~~~~  -  J~~~~~isi                        e-i~


            VCross Section                          Parsablic-Cross Section














Figure 14. Grassed Swale






Source: South Carolina Land Resources Conservation CornryhSissor 1985.












                    WET DETENTION SYSTEM



              *              ~~~~POND CONFIGURATION B









                                               LITTORAY


                    SEDIMENT SUMP    DEEPER AREA




Figure 15. Wet Extended Detention Pond


            Source: Storm Waler and Erosion and. Sediment Control Best Mananement practices for
                 Deve~olopn Aes Florida










                                                                                                                  WHE~   PLANNING ~    i      ]DESIGN
            | 0 :BMP f      ~ D 000 vEFINITO    .l                                   i Ad*.PPLICAt B:~L:IE RO                               CRITERIA

Wet Pond              A pond with all of its          To provide a high      May be used in areas where   Shallow areas around the   Surface Area and
                      storage as a permanent pool   level of urban          a combination of water         pond should be designed   Volume: Minimum of
                                                     pollutant removal     quality treatment,              to encourage growth of      1.5% of the
                                                     through biological     streambank erosion             emergent wetland           contributing catchment
                                                      uptake of aquatic      protection, and flood          vegetation, which          area;
                                                      wetland vegetation     protection is needed  functions as a biological    volume should equal
                                                                                                            filter and sediment trap   runoff of a 6 month,
                                                                                                                                       24 hour design storm
                                                                                                                                       Depth: Maximum of 6'
                                                                                                                                       Geometry: Length-to-
                                                                                                                                       width ratio of 3:1 or
                                                                                                                                       5:1
Extended Detention - A dry extended detention        To provide storm        May be used in areas where   One micro-pool is             Care must be taken in
Micro-Pool            system containing one or       water runoff            a higher quality of            located near the riser to    designing the system to
                      two small permanent pools    control, runoff          discharged storm water is      protect the extended        avoid resuspending
                      for pollution removal          pollution removal,     required; this system is       detention pipe from         previously deposited
                                                     sedimentation  ::      good for coastal areas where   clogging                    materials in thelower
                                                     control, and           high quality treated storm     The second pool is          pool; an artificial
                                                     flooding control in    water runoff is important      located near the inlet and   wetland can be created
                                                     an area containing                                    functions as a sediment     to stabilize the
                                                     sensitive wetlands                                    trap                        sediments
                                                     and forests

Extended Detention   An extended detention           To provide storm        May be used in areas where   To function properly,         Pool Depth: 0' to 3'
Shallow Marsh         system using emergent           water runoff          -a combination of storm         this system must be         Irregular shaped
                      aquatic wetland vegetation     control, runoff        water runoff control,          planned for periodic        permanent pool
                      as its principal pollutant     pollution removal,     sedimentation and pollution    removal of sediments and   Plant emergent aquatic
                      removal system                 and sedimentation      control are needed - and       debris from the deepest     wetland vegetation
                                                     control                where the discharge water      part of the basin           native to the area, if
                                                                            must be of high quality                                    possible










                                                           PURPOSE -    APPICABLE                                  PLANNING-                   DESIGN
                    lIMP .   DEFINITION~~~~~~~ "CONSDEATO                                                                                     CRITERIA

Artificial            An artificial freshwater        To provide             May be used in large areas    Estimate approximately       If the wetland is used
Freshwater Wetland   shallow:marsh designed to        biofiltration of       with gentle slopes that         150 square feet of         for storm water
                      treat storm water runoff and   pollutants carried by   promote sheet runoff and/or   wetland for every 10,000   detention, the
                      reduce sedimentation            storm water runoff    low velocity flow to the        square feet of              temporary increase in
                                                      prior to release to    wetland                        contributing developed :   water depth during a
                                                      receiving waters                                      area                        100 year storm should
                                                                                                            Depth to ground water      not exceed I"
                                                                                                            should be determined to    Use vegetation adapted
                                                                                                            decide if a liner is       to :: :t the area and climate
                                                                                                            needed to avoid ground
                                                                                                            water contamination

Infiltration Dry      A dry pond system for site    To temporarily store   May be used in areas where   The seasonal high               Drainage Area: From
 Pond                  with permeable soils that      storm water runoff    storm water runoff control       groundwater table should   5 to 50 acres
(Basin)               promote infiltration of         and maintain on-site   and' treatment are needed, as   be at least 3' below the    Depth: From 3' to 12'
                       temporarily stored storm       groundwater by          well as maintenance of the     bottom of the basin         The basin must be a
                       water runoff                   infiltration through    groundwater levels             Soils must be suitable for   minimum of 50' from
                                                      the bottom and sides                                  basinconstructionand        any slope greater than
                                                      of the basin                                          infiltration                 15% IY
                                                                                                                                        Basin must be a
                                                                                                                                        minimum of 100'
                                                                                                                                        upslope and 20'
                                                                                                                                        downslope of any
                                                                                                                                        building











       amp                   DEFINITION                   PURPOSEA IABE                                        CONSIDRATIO                    CRITERIA

Dry Extended          An open pond system that.      To temporarily store   May be used on large            Generally, the completed   Requires a minimum
Detention Pond        temporarily stores excess       excess storm water     development sites where        pond should be planned       of 40 hours detention
                      runoff from the site prior to    runoff from a site    water quality treatment and    to provide safety for       time for settling of
                      gradual release after the      before gradual          flood control are needed       people, protection of       urban pollutants and
                      peak of storm water inflow    release into a                                          property, improved          sediment from a 2
                      has passed                     receiving water                                        storm water runoff          year, 24 hour storm
                                                      body; provides                                         control and provide         Pond depth and
                                                      removal of                                            wildlife habitats            geometry same as for a
Figure 16::                                : -       sediments through                                                                   wet pond
                                                      settling

Grass Filter Strip    A grassed surface area         Used to remove          May be used to protect         To be effective, the         Grade should be
                      designed to accept overland    sediment, organic      surface infiltration trenches    depth of storm water       uniform, even, with a
                      sheet flow                     materials, and trace    from clogging with             during treatment should     relatively low slope
                                                      metals from storm      sediment, parking lot           not exceed the height of    A shallow stone trench
                                                      water runoff           perimeters, on sides of        the grass                    along the top of the
                                                                              roadways, etc.                :Runoff should be a .        grassed filter strip may
                                                                                                             uniform sheet flow          serves as a level
                                                                                                                                          spreader
Infiltration Trench I  A shallow, excavated trench   To provide control      May be used for residential    If infiltration is desired,    Drainage Area: 5 to 10
                      back-filled with stone to      of storm water         lots, commercial areas,         soils and depth to the      acres
                      form an underground            runoff, preserve on-   parking lots, and open areas   ground water table must    Trench Depth: 3' to 8'
                      reservoir toinfiltrate storm    site ground water                                     be suitable                 Stone fill material shall
                      water runoff into the subsoil   and remove                                                                        consist of washed
                      or drain into pipes and be     sediments and                                                                      aggregate 1.5" to 3" in
                      diverted to a suitable   :     pollutants                                                                         diameter
                      collection point

















                   Schematic Of a Dry Extendied Detention Pond





       'rap View


                                  Top Stage ~ ~      ~      Lar~ag



                     Low Flow Chafnnhi
                                                  \   \   ~~Central




       Side View
                                la Year Water Surface Elevation





















  Figure 16. Dry Extended Detention Pond










Source: Sctiuslor. 1987.










                                                                                                      WHERE   . PLANNING                       DE~~~SIGN
                '' f   w.,','   ...........        L     .....~~~~~~~~~~~~~::'''''':''':'l'i~i"~.~.ii :jl0l~iii'iiir:li:i i          D
       .: ~   ~      ~      I)FNTO P::OS .                                                                                                 CRITE:RI:A: : 7*:::*         : :  : *::: C;v* :S  z::

InfiltrationTrench    s imilar to Infiltration      To provide storm       May beused for parking         Slottedcurbs maybe          Same as for Infiltration
     11 ::In  X      Trench I; designed to          water runoff control   lots or other large areas of    used to function as level    Trench I
                      intercept sheet flow from     and water quality      impervious surface   :    spreaders:                       A 20' gra  filterstrip
                      parking lots; a grass filter     improvement of :                                                               should be maintained
                      strip separates the trench     sheet flow from                                                                  between the trench and
                      from the paved surface ;      parking lots                                                                      the paved surface




Dry Well              A small infiltration system   To intercept and       May be used where disposal   This system may only be   Design criteria is the
                      designed to infiltrate runoff    infiltrate runoff   of runoff via infiltration can   used in areas where there   same as for infiltration
                      from roof downspouts          from roof              occur onsite and where         is not significant          Trenches
                                                      downspouts    I       hook-up to a storm water or   depositional air pollution   Te dry well should be
                                                                             sanitary system is not    :   Regular maintenance and   no less than 10' from
                                                                             possible  :   cleaning is required for    the building foundation
                                                                                                             design operation


Porous Pavement       Porous paving material      - To provide water       May be used in parking    : Porous pavement must-    Should be designed to
                      designed toallow the          quality improvement   areas, low-volume roads,        becarefullymaintained       drain the runoff from-a
                       infiltration of storm water     of storm water    and emergency parking             to avoid clogging from      6 month, 24 hour
                       while removing the soluble   : runoff and ground     lanes where grade and          spills and dust   storm within 48 hours
                       and fine particulate          water recharge         subsoil will allow on-site
                       pollutants ::                        :               infiltration











       -;0-;-:i -:BM-     0     X-iP.:.fiï¿½-- X   rW ig 0AlllFtli:.ï¿½~~~       I S                          -: ION                                 I     ERI

Concrete Grid and    Paving material consisting        To improve storm        May be used in parking          The following items          Installation is based on
Modular Pavement    of strong structural material    water runoff water        lots, airport runway            should be considered:        the manufacturer's
                      with regular, interspersed      quality, reduce         shoulders, emergency            soil permeability, slope,    recommendations
                      void areas filled with          runoff rates, reduce    parking lanes, on-street        intended use of the area,    Parking areas should
                      pervious material (sod,         off-site pollution,    parking aprons, driveways,    types of pollutants             avoid ponding for
                      grass, gravel, sand, etc.)      and provide ground    patios, and walkways              generated, depth to          periods exceeding
                                                      water recharge                                          ground water, pre- and       more than 2 hours
                                                                                                              post-development runoff
                                                                                                              volumes, and surface
                                                                                                              drainage conditions
Fertilizer/Pesticide    Proper use of fertilizers and   To reduce nutrient     Developed and developing        Developments adjacent to  Fertilizers and
Control                pesticides to avoid water       loading and toxic      sites                            sensitive water bodies       pesticides should be
                      quality impacts                 chemical loading of                                     should provide lawn care   stored in sheds and
                                                      storm water runoff                                      services, and carefully      away from water
                                                                                                              monitor and time             sources (streams,
                                                                                                              applications to avoid        lakes, etc.) and
                                                                                                              polluted runoff entering     pervious soil
                                                                                                              receiving waters
















                                PRINTED JANUARY 1995


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