[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR465.03]
[Page 600-601]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 465--COIL COATING POINT SOURCE CATEGORY--Table of Contents
Sec. 465.03 Monitoring and reporting requirements.
The following special monitoring requirements apply to all
facilities controlled by this regulation.
(a) Periodic analyses for cyanide are not required when both of the
following conditions are met:
(1) The first wastewater sample taken in each calendar year has been
analyzed and found to contain less than 0.07 mg/l cyanide
(2) The owner or operator of the coil coating facility certifies in
writing to the POTW authority or permit issuing authority that cyanide
is not used in the coil coating process.
(b) The ``monthly average'' regulatory values shall be the basis for
the monthly average discharge limits in direct discharge permits and for
pretreatment standards. Compliance with the monthly discharge limit is
required regardless of the number of samples analyzed and averaged.
(c) The following determination method shall be used for the
determination of the concentration of oil and grease in wastewater
samples from all subcategories of coil coating (Based on Standard
Methods, 15th Edition, Methods 503A and 503E). In this method, a
partition gravimetric procedure is used to determine hydrocarbon
(petroleum based) oil and grease (O&G-E).
(1) Apparatus. (i) Separatory funnel, 1 liter, with TFE 1
stopcock.
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\1 \ Teflon[reg] or equivalent.
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(ii) Glass stoppered flask, 125 ml.
(iii) Distilling flask, 125 ml.
(iv) Water bath.
(v) Filter paper, 11 cm diameter.\2\
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\2\ Whatman No. 40 or equivalent.
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(vi) Glass funnel.
(vii) Magnetic stirrer and Teflon coated stir bar.
(2) Reagents. (i) Hydrochloric acid, HCl, 1+1.
[[Page 601]]
(ii) Trichlorotrifluoroethane.3 (1,1,2-trichloro-1,2,2-
trifluoroethane), boiling point 47 [deg]C. The solvent should leave no
measurable residue on evaporation; distill if necessary. Do not use any
plastic tubing to transfer solvent between containers.
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\3 \ Freon or equivalent.
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(iii) Sodium sulfate, Na2 SO4, anhydrous
crystal.
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\4 \ Davidson Grade 950 or equivalent.
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(iv) Silica gel, 60 to 200 mesh.4 Dry at 110 [deg]C for
24 hours and store in a tightly sealed container.
(3) Procedure. To determine hydrocarbon oil and grease, collect
about 1 liter of sample and mark sample level in bottle for later
determination of sample volume. Acidify to pH 2 or lower; generally, 5
ml HCl is sufficient. Transfer to a separatory funnel. Carefully rinse
sample bottle with 30 ml trichlorotrifluoroethane and add solvent
washings to separatory funnel. Preferably shake vigorously for 2
minutes. However, if it is suspected that a stable emulsion will form,
shake gently for 5 to 10 minutes. Let layers separate. Drain solvent
layer through a funnel containing solvent-moistened filter paper into a
tared clean flask. If a clear solvent layer cannot be obtained, add 1g
Na2 SO4 to the filter paper cone and slowly drain
emulsified solvent onto the crystals. Add more Na2
SO4 if necessary. Extract twice more with 30 ml solvent each
but first rinse sample container with each solvent portion. Combine
extracts in tared flask and wash filter with an additional 10 to 20 ml.
solvent. Add 3.0 g silica gel. Stopper flask and stir on a magnetic
stirrer for 5 minutes. Filter solution through filter paper and wash
silica gel and filter paper with 10 ml solvent and combine with filtrate
in tared distilling flask. Distill solvent from distilling flask in a
water bath at 70 [deg]C. Place flask on a water bath at 70 [deg]C for 15
minutes and draw air through it with an applied vacuum for the final 1
minute. Cool in a desiccator for 30 minutes and weigh.
(4) Calculations--calculation of O&G-E. If the organic solvent is
free of residue the gain in weight of the tared distilling flask is due
to hydrocarbon oil and grease. Total gain in weight, E, is the amount of
hydrocarbon oil and grease in the sample (mg):
mg (hydrocarbon oil and grease) / 1 =
E x 1000
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ml/sample
(5) Use of O&G-E. The value, O&G-E shall be used as the measure of
compliance with the oil and grease limitations and standards set forth
in this regulation.
(d) The owner or operator of any canmaking facility subject to the
provisions of this regulation shall advise the permit issuing authority
or POTW authority and the EPA Office of Water Regulations and Standards,
Washington, DC 20460 whenever it has been decided that the plant will
manufacture cans from an aluminum alloy containing less than 1.0 percent
manganese. Such notification shall be made in writing, not less than 30
days in advance of the scheduled production and shall provide the
chemical analysis of the alloy and the expected period of use.
(Approved by the Office of Management and Budget under control number
2040-0033)
[47 FR 54244, Dec. 1, 1982, as amended at 48 FR 52399, Nov. 17, 1983; 49
FR 14104, Apr. 10, 1984; 50 FR 4515, Jan. 31, 1985]