[Federal Register Volume 86, Number 54 (Tuesday, March 23, 2021)]
[Rules and Regulations]
[Pages 15421-15423]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-05761]
[[Page 15421]]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 60
[EPA-HQ-OAR-2018-0815; FRL 10018-97-OAR]
RIN 2060-AU39
Test Methods and Performance Specifications for Air Emission
Sources; Correction
AGENCY: Environmental Protection Agency (EPA).
ACTION: Correcting amendments.
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SUMMARY: The Environmental Protection Agency (EPA) is correcting a
final rule that was published in the Federal Register on October 7,
2020, and was effective on December 7, 2020. The final rule corrected
and updated regulations for source testing of emissions. This
correction does not change any final action taken by the EPA on October
7, 2020; this action corrects the amendatory instructions for Methods 4
and 5.
DATES: The correction is effective on March 23, 2021.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-HQ-OAR-2018-0815. All documents in the docket are
listed at http://www.regulations.gov. Although listed in the index,
some information is not publicly available, e.g., confidential business
information or other information whose disclosure is restricted by
statute. Certain other material, such as copyrighted material, is not
placed on the internet and will be publicly available only in hard
copy. Publicly available docket materials are available electronically
through http://www.regulations.gov.
FOR FURTHER INFORMATION CONTACT: Mrs. Lula H. Melton, Office of Air
Quality Planning and Standards, Air Quality Assessment Division (E143-
02), Environmental Protection Agency, Research Triangle Park, NC 27711;
telephone number: (919) 541-2910; fax number: (919) 541-0516; email
address: [email protected].
SUPPLEMENTARY INFORMATION: In the final rulemaking published in the
Federal Register on October 7, 2020 (85 FR 63394), there were some
inadvertent errors made to Methods 4 and 5 due to unclear or incorrect
amendatory instruction. In this correction document, we are clarifying
and correcting the amendatory instructions for ``Appendix A-3 to part
60'' to correct the inadvertent errors and incorporate the revisions
from the final rulemaking.
In Method 4, we are revising sections 8.1.3.1, 8.1.3.2, and adding
sections 8.1.3.2.1, 8.1.3.2.2, 8.1.3.2.3, 8.1.3.2.4, 8.1.3.3, and
8.1.3.4. We are also revising section 12.1.3.
In Method 5, we are revising sections 12.3, 12.11.1, 12.11.2,
16.1.1.4, and 16.2.3.3.
List of Subjects 40 CFR Part 60
Environmental protection, Air pollution control, Incorporation by
reference, Performance specifications, Test methods and procedures.
Joseph Goffman,
Acting Assistant Administrator, Office of Air and Radiation.
Accordingly, 40 CFR part 60 is corrected as follows:
PART 60--STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES
0
1. The authority citation for part 60 continues to read as follows:
Authority: 42 U.S.C. 7401 et seq.
0
2. Amend appendix A-3 to part 60 by:
0
a. In Method 4 by:
0
i. Revising sections ``8.1.3.1'' and ``8.1.3.2'';
0
ii. Adding sections ``8.1.3.2.1'', ``8.1.3.2.2'', ``8.1.3.2.3'',
``8.1.3.2.4'', ``8.1.3.3'', and ``8.1.3.4''; and
0
iii. Revising section ``12.1.3''; and
0
b. In Method 5 by revising sections ``12.3'', ``12.11.1'', ``12.11.2'',
``16.1.1.4'', and ``16.2.3.3''.
The additions and revisions read as follows:
Appendix A-3 to Part 60--Test Methods 4 through 5I
* * * * *
Method 4--Determination of Moisture Content in Stack Gases
* * * * *
8.1.3.1 Leak Check of Metering System Shown in Figure 4-1. That
portion of the sampling train from the pump to the orifice meter
should be leak-checked prior to initial use and after each shipment.
Leakage after the pump will result in less volume being recorded
than is actually sampled. The following procedure is suggested (see
Figure 5-2 of Method 5): Close the main valve on the meter box.
Insert a one-hole rubber stopper with rubber tubing attached into
the orifice exhaust pipe. Disconnect and vent the low side of the
orifice manometer. Close off the low side orifice tap. Pressurize
the system to 13 to 18 cm (5 to 7 in.) water column by blowing into
the rubber tubing. Pinch off the tubing and observe the manometer
for one minute. A loss of pressure on the manometer indicates a leak
in the meter box; leaks, if present, must be corrected. 8.1.3.2
Pretest Leak Check. A pretest leak check of the sampling train is
recommended, but not required. If the pretest leak check is
conducted, the following procedure should be used. 8.1.3.2.1 After
the sampling train has been assembled, turn on and set the filter
and probe heating systems to the desired operating temperatures.
Allow time for the temperatures to stabilize. 8.1.3.2.2 Leak-check
the train by first plugging the inlet to the filter holder and
pulling a 380 mm (15 in.) Hg vacuum. Then connect the probe to the
train, and leak-check at approximately 25 mm (1 in.) Hg vacuum;
alternatively, the probe may be leak-checked with the rest of the
sampling train, in one step, at 380 mm (15 in.) Hg vacuum. Leakage
rates in excess of 4 percent of the average sampling rate or 0.00057
m\3\/min (0.020 cfm), whichever is less, are unacceptable. 8.1.3.2.3
Start the pump with the bypass valve fully open and the coarse
adjust valve completely closed. Partially open the coarse adjust
valve, and slowly close the bypass valve until the desired vacuum is
reached. Do not reverse the direction of the bypass valve, as this
will cause water to back up into the filter holder. If the desired
vacuum is exceeded, either leak-check at this higher vacuum, or end
the leak check and start over. 8.1.3.2.4 When the leak check is
completed, first slowly remove the plug from the inlet to the probe,
filter holder, and immediately turn off the vacuum pump. This
prevents the water in the impingers from being forced backward into
the filter holder and the silica gel from being entrained backward
into the third impinger. 8.1.3.3 Leak Checks During Sample Run. If,
during the sampling run, a component (e.g., filter assembly or
impinger) change becomes necessary, a leak check shall be conducted
immediately before the change is made. The leak check shall be done
according to the procedure outlined in section 8.1.3.2, except that
it shall be done at a vacuum equal to or greater than the maximum
value recorded up to that point in the test. If the leakage rate is
found to be no greater than 0.00057 m\3\/min (0.020 cfm) or 4
percent of the average sampling rate (whichever is less), the
results are acceptable, and no correction will need to be applied to
the total volume of dry gas metered; if, however, a higher leakage
rate is obtained, either record the leakage rate and plan to correct
the sample volume as shown in section 12.3 of Method 5, or void the
sample run.
Note: Immediately after component changes, leak checks are
optional. If such leak checks are done, the procedure outlined in
section 8.1.3.2 should be used.
8.1.3.4 Post-Test Leak Check. A leak check of the sampling train is
mandatory at the conclusion of each sampling run. The leak check shall
be performed in accordance with the procedures outlined in section
8.1.3.2, except that it shall be conducted at a vacuum equal to or
greater than the maximum value reached during the sampling run. If the
leakage rate is found to be no greater than 0.00057 m\3\ min (0.020
cfm) or 4 percent of the average sampling rate (whichever is less), the
results are acceptable, and no correction need be applied to the total
[[Page 15422]]
volume of dry gas metered. If, however, a higher leakage rate is
obtained, either record the leakage rate and correct the sample volume
as shown in section 12.3 of Method 5 or void the sampling run.
* * * * *
12.1.3 Volume of Water Collected in Silica Gel.
[GRAPHIC] [TIFF OMITTED] TR23MR21.004
Where:
K3 = 0.001335 m\3\/g for metric units = 0.04716 ft\3\/g
for English units.
* * * * *
Method 5--Determination of Particulate Matter Emissions From Stationary
Sources
* * * * *
12.3 Dry Gas Volume. Correct the sample volume measured by the dry
gas meter to standard conditions (20 [deg]C, 760mm Hg or 68 [deg]F,
29.92 in. Hg) by using Equation 5-1.
[GRAPHIC] [TIFF OMITTED] TR23MR21.005
Where:
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
Note: Equation 5-1 can be used as written unless the leakage
rate observed during any of the mandatory leak checks (i.e., the
post-test leak check or leak checks conducted prior to component
changes) exceeds La. If Lp or Li
exceeds La, Equation 5-1 must be modified as follows:
(a) Case I. No component changes made during sampling run. In this
case, replace Vm in Equation 5-1 with the expression:
(Vm - (Lp - La)[thetas])
(b) Case II. One or more component changes made during the sampling
run. In this case, replace Vm in Equation 5-1 by the expression:
[GRAPHIC] [TIFF OMITTED] TR23MR21.006
and substitute only for those leakage rates (Li or
Lp) which exceed La.
* * * * *
12.11.1 Calculation from Raw Data.
[GRAPHIC] [TIFF OMITTED] TR23MR21.007
Where:
K4 = 0.003456 ((mm Hg)(m\3\))/((ml)([deg]K)) for metric
units,
= 0.002668 ((in. Hg)(ft\3\))/((ml)([deg]R)) for English units.
12.11.2 Calculation from Intermediate Values.
[GRAPHIC] [TIFF OMITTED] TR23MR21.008
[[Page 15423]]
Where:
K5 = 4.3209 for metric units = 0.09450 for English
units.
* * * * *
16.1.1.4 Calculate flow rate, Q, for each run using the wet test
meter volume, Vw, and the run time, [thgr]. Calculate the
DGM coefficient, Yds, for each run. These calculations are
as follows:
[GRAPHIC] [TIFF OMITTED] TR23MR21.009
[GRAPHIC] [TIFF OMITTED] TR23MR21.010
Where:
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
Vw = Wet test meter volume, liter (ft3).
Vds = Dry gas meter volume, liter (ft3).
Tds = Average dry gas meter temperature, [deg]C ([deg]F).
Tadj = 273.15 [deg]C for metric units = 459.67 [deg]F for
English units.
Tw = Average wet test meter temperature, [deg]C ([deg]F).
Pbar = Barometric pressure, mm Hg (in. Hg).
[Delta]p = Dry gas meter inlet differential pressure, mm
H2O (in. H2O).
[thgr] = Run time, min.
* * * * *
16.2.3.3 Calculate the standard volumes of air passed through the
DGM and the critical orifices, and calculate the DGM calibration
factor, Y, using the equations below:
[GRAPHIC] [TIFF OMITTED] TR23MR21.011
[GRAPHIC] [TIFF OMITTED] TR23MR21.012
[GRAPHIC] [TIFF OMITTED] TR23MR21.013
Where:
Vcr(std) = Volume of gas sample passed through the
critical orifice, corrected to standard conditions, dscm (dscf).
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
* * * * *
[FR Doc. 2021-05761 Filed 3-22-21; 8:45 am]
BILLING CODE 6560-50-P