Loading (50 kb)...'
(continued)
x is the actual normalized process wastewater flow (in gallons per
1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(b) Casting Quench Operations.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0093 0.0051
Lead (T).................................... 0.0096 0.0047
Zinc (T).................................... 0.0138 0.0052
Oil and grease.............................. 0.363 0.121
TSS......................................... 0.46 0.182
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)........................... 0.77 0.42 0.0021
Lead (T)............................. 0.79 0.39 0.0027
Zinc (T)............................. 1.14 0.43 0.0033
Oil and grease....................... 30 10 0.0605
TSS.................................. 38 15 0.121
pH................................... (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1,000 kkg (pounds per million pounds) of metal poured.
\2\ These concentrations must be multiplied by the ratio of (1.45/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(c) Die Casting Operations.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
one 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0066 0.0036
Lead (T).................................... 0.0068 0.0034
Zinc (T).................................... 0.0098 0.0037
Total Phenols............................... 0.0074 0.0026
Oil and grease.............................. 0.259 0.0864
TSS and..................................... 0.33 0.13
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)........................... 0.77 0.42 0.0015
Lead (T)............................. 0.79 0.39 0.0019
Zinc (T)............................. 1.14 0.43 0.0023
Total phenols........................ 0.86 0.3 0.0017
Oil and grease....................... 30 10 0.0432
TSS and.............................. 38 15 0.0864
pH................................... (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1,000 kkg (pounds per million pounds) of metal poured.
\2\ These concentrations must be multiplied by the ratio of (1.04/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured)
\3\ Within the range of 7.0 to 10.0 at all times.
(d) Dust Collection Scrubber Operations.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant of pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm
\3\ (pounds
per billion
SCF) of air
scrubbed
-----------------------------
Cooper (T)................................ 0.231 0.126
Lead (T).................................. 0.237 0.117
Zinc (T).................................. 0.343 0.129
Total phenols............................. 0.258 0.09
Oil and grease............................ 9.01 3.0
TSS....................................... 11.4 4.51
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Cooper (T)........................... 0.77 0.42 0.0511
Lead (T)............................. 0.79 0.39 0.0661
Zinc (T)............................. 1.14 0.43 0.0811
Total phenols........................ 0.86 0.3 0.0601
Oil and grease....................... 30 10 1.5
TSS.................................. 38 15 3.0
pH................................... (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/62.3 million Sm \3\ (pounds per billion SCF) of air scrubbed.
\2\ These concentrations must be multiplied by the ratio of (0.036/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 SCF of air scrubbed) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.
(f) Investment Casting.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 8.48 4.63
Lead (T).................................. 8.7 4.3
Zinc (T).................................. 12.6 4.74
Oil and grease............................ 330 110
TSS....................................... 419 165
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 1.87
Lead (T)........................... 0.79 0.39 2.42
Zinc (T)........................... 1.14 0.43 2.97
Oil and grease..................... 30 10 55.1
TSS................................ 38 15 110
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1,000 kkg (pounds per million pounds) of metal poured
\2\ These concentrations must be multiplied by the ratio of (1,320/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(g) Melting Furnace Scrubber Operations.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm
\3\ (pounds
per billion
SCF) of air
scrubbed
-----------------------------
Copper (T)................................ 3.01 1.64
Lead (T).................................. 3.09 1.52
Zinc (T).................................. 4.45 1.68
Total phenols............................. 3.36 1.17
Oil and grease............................ 117 39.1
TSS....................................... 148 58.6
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 0.664
Lead (T)........................... 0.79 0.39 0.859
Zinc (T)........................... 1.14 0.43 1.05
Total phenols...................... 0.86 0.3 0.781
Oil and grease..................... 30 10 19.5
TSS................................ 38 15 39.1
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/62.3 million Sm \3\ (pounds per billion SCF) of air scrubbed.
\2\ These concentrations must be multiplied by the ratio of (0.468/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 SCF of air scrubbed) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(h) Mold Cooling Operations.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 0.297 0.162
Lead (T).................................. 0.305 0.151
Zinc (T).................................. 0.44 0.166
Oil and grease............................ 11.6 3.86
TSS....................................... 14.7 5.79
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\
Copper (T)......................... 0.77 0.42 0.0656
Lead (T)........................... 0.79 0.39 0.0849
Zinc (T)........................... 1.14 0.43 0.104
Oil and grease..................... 30 10 1.93
TSS................................ 38 15 3.86
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1,000 kkg (pounds per million pounds of metal poured.
\2\ These concentrations must be multiplied by the ratio of (46.3/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
[50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986]
§ 464.15 Pretreatment standards for existing sources.
top
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.
(a) Casting Cleaning Operations.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0771 0.0421
Lead (T).................................... 0.0791 0.039
Zinc (T).................................... 0.114 0.0431
------------------------------------------------------------------------
(b) Casting Quench Operation.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0093 0.0051
Lead (T).................................... 0.0096 0.0047
Zinc (T).................................... 0.0138 0.0052
TT0......................................... 0.029 0.0095
Oil and grease (for alternate monitoring)... 0.363 0.121
------------------------------------------------------------------------
(c) Die Casting Operations.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0066 0.0036
Lead (T).................................... 0.0068 0.0034
Zinc (T).................................... 0.0098 0.0037
Total phenols............................... 0.0074 0.0026
TTO......................................... 0.0308 0.01
Oil and grease (for alternate monitoring)... 0.259 0.0864
------------------------------------------------------------------------
(d) Dust Collection Scrubber Operations.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm
\3\ (pounds
per billion
SCF) of air
scrubbed
-----------------------------
Copper (T)................................ 0.231 0.126
Lead (T).................................. 0.237 0.117
Zinc (T).................................. 0.343 0.129
Total phenols............................. 0.258 0.09
TTO....................................... 0.613 0.2
Oil and grease (for alternate monitoring). 9.01 3.00
------------------------------------------------------------------------
(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.
(f) Investment Casting.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 8.48 4.63
Lead (T).................................... 8.7 4.3
Zinc (T).................................... 12.6 4.74
TTO......................................... 18.1 5.91
Oil and grease (for alternate monitoring.... 330 110
------------------------------------------------------------------------
(g) Melting Furnace Scrubber Operations.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm
\3\ (pounds
per billion
SCF) of air
scrubbed
---------------------------
Copper (T).................................. 3.01 1.64
Lead (T).................................... 3.09 1.52
Zinc (T).................................... 4.45 1.68
Total phenols............................... 3.36 1.17
TTO......................................... 7.97 2.6
Oil and grease (for alternate monitoring)... 117 39.1
------------------------------------------------------------------------
(h) Mold Cooling Operations.
PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 0.297 0.162
Lead (T).................................. 0.305 0.151
Zinc (T).................................. 0.44 0.166
TTO....................................... 0.935 0.304
Oil and grease (for alternate monitoring). 11.6 3.86
------------------------------------------------------------------------
[50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986]
§ 464.16 Pretreatment standards for new sources.
top
Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources.
(a) Casting Cleaning Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0771 0.0421
Lead (T).................................... 0.0791 0.039
Zinc (T).................................... 0.114 0.0431
------------------------------------------------------------------------
(b) Casting Quench Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0093 0.0051
Lead (T).................................... 0.0096 0.0047
Zinc (T).................................... 0.0138 0.0052
TTO......................................... 0.029 0.0095
Oil and grease (for alternate monitoring)... 0.363 0.121
------------------------------------------------------------------------
(c) Die Casting Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0066 0.0036
Lead (T).................................... 0.0068 0.0034
Zinc (T).................................... 0.0098 0.0037
Total Phenols............................... 0.0074 0.0026
TTO......................................... 0.0308 0.01
Oil and grease (for alternate monitoring)... 0.259 0.0864
------------------------------------------------------------------------
(d) Dust Collection Scrubber Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm\3\
(pounds per
billion SCF)
of air
scrubbed
-----------------------------
Copper (T)................................ 0.231 0.126
Lead (T).................................. 0.237 0.117
Zinc (T).................................. 0.343 0.129
Total Phenols............................. 0.258 0.09
TTO....................................... 0.613 0.2
Oil and grease (for alternate monitoring). 9.01 3.0
------------------------------------------------------------------------
(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.
(f) Investment Casting.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 8.48 4.63
Lead (T).................................... 8.7 4.3
Zinc (T).................................... 12.6 4.74
TTO......................................... 18.1 5.91
Oil and grease (for alternate monitoring)... 330 110
------------------------------------------------------------------------
(g) Melting Furnace Scrubber Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million
Sm\3\
(pounds per
billion SCF)
of air
scrubbed
---------------------------
Copper (T).................................. 3.01 1.64
Lead (T).................................... 3.09 1.52
Zinc (T).................................... 4.45 1.68
Total Phenols............................... 3.36 1.17
TTO......................................... 7.97 2.6
Oil and grease (for alternate monitoring)... 117 39.1
------------------------------------------------------------------------
(h) Mold Cooling Operations.
PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 0.297 0.162
Lead (T).................................. 0.305 0.151
Zinc (T).................................. 0.44 0.166
TTO....................................... 0.935 0.304
Oil and grease (for alternate monitoring). 11.6 3.86
------------------------------------------------------------------------
§ 464.17 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology. [Reserved]
top
Subpart B—Copper Casting Subcategory
top
§ 464.20 Applicability; description of the copper casting subcategory.
top
The provisions of this subpart are applicable to discharges to waters of the United States and to the introduction of pollutants into publicly owned treatment works resulting from copper casting operations as defined in §464.02(b).
§ 464.21 Specialized definitions.
top
For the purpose of this subpart:
(a) Total Toxic Organics (TTO). TTO is a regulated parameter under PSES (§464.25) and PSNS (§464.26) for the copper subcategory and is comprised of a discrete list of toxic organic pollutants for each process segment where it is regulated, as follows:
(1) Casting Quench (§464.25(a) and §464.26(a)):
23. chloroform (trichloromethane)
64. pentachlorophenol
66. bis(2-ethylhexyl)phthalate
71. dimethyl phthalate
(2) Dust Collection Scrubbers (§464.25(c) and 464.26(c)):
1. acenaphthene
22. para-chloro meta-cresol
23. chloroform (trichloromethane)
34. 2,4-dimethylphenol
55. naphthalene
58. 4-nitrophenol
64. pentachlorophenol
65. phenol
66. bis(2-ethylhexyl)phthalate
67. butyl benzyl phthalate
68. di-n-butyl phthalate
70. diethyl phthalate
71. dimethyl phthalate
72. benzo(a)anthracene (1,2-benzanthracene)
74. 3,4-benzofluoranthene
75. benzo(k) fluoranthene
76. chrysene
77. acenaphthylene
78. anthracene
81. phenanthrene
84. pyrene
(3) Investment Casting (§464.25(e) and §464.26(e)):
1. acenaphthene
22. para-chloro meta-cresol
23. chloroform (trichloromethane)
34. 2,4-dimethylphenol
55. naphthalene
58. 4-nitrophenol
64. pentachlorophenol
65. phenol
66. bis (2-ethylhexyl)phthalate
67. butyl benzyl phthalate
68. di-n-butyl phthalate
70. diethyl phthalate
71. dimethyl phthalate
72. benzo(a)anthracene (1,2-benzanthracene)
74. 3,4-benzofluoranthene
75. benzo(k) fluoranthene
76. chrysene
77. acenaphthylene
78. anthracene
81. Phenanthrene
84. pyrene
(4) Melting Furnace Scrubber (§464.25(f) and §464.26(f)):
1. acenaphthene
22. para-chloro meta-cresol
23. chloroform (trichloromethane)
34. 2,4-dimethylphenol
55. naphthalene
58. 4-nitrophenol
64. pentachlorophenol
65. phenol
66. bis (2-ethylhexyl) phthalate
67. butyl benzyl phthalate
68. di-n-butyl phthalate
70. diethyl phthalate
71. dimethyl phthalate
72. benzo(a)anthracene (1,2-benzanthracene)
74. 3,4-benzoflouranthene
75. benzo(k) flouranthene
76. chrysene
77. acenaphthylene
78. anthracene
81. phenanthrene
84. pyrene
(5) Mold Cooling (§464.25(g) and §464.26(g)):
23. chloroform (trichloromethane)
64. pentachlorophenol
66. bis(2-ethylhexyl)phthalate
71. dimethyl phthalate
§ 464.22 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available, except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/62.3 million Sm 3 or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers.
(a) Casting Quench Operations.
BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
---------------------------
Copper (T).................................. 0.0307 0.0168
Lead (T).................................... 0.0315 0.0156
Zinc (T).................................... 0.0455 0.0171
Oil and grease.............................. 1.2 0.399
TSS......................................... 1.52 0.598
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 0.0068
Lead (T)........................... 0.79 0.39 0.0088
Zinc (T)........................... 1.14 0.43 0.0108
Oil and grease..................... 30 10 0.199
TSS................................ 38 15 0.399
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1000 kkg (pounds per million pounds) of metal poured
\2\ These concentrations must be multiplied by the ratio of (4.8/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(b) Direct Chill Casting Operations.
BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 0.928 0.506
Lead (T).................................. 0.952 0.47
Zinc (T).................................. 1.37 0.518
Oil and grease............................ 36.2 12.1
TSS....................................... 45.8 18.1
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 0.205
Lead (T)........................... 0.79 0.39 0.265
Zinc (T)........................... 1.14 0.43 0.326
Oil and grease..................... 30 10 6.03
TSS................................ 38 15 12.1
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1000 kkg (pounds per million pounds) of metal poured.
\2\ These concentrations must be multiplied by the ratio of (145/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(c) Dust Collection Scrubber Operations.
BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/62.3
million Sm\3\
(pounds per
billion SCF)
of air
scrubbed
-----------------------------
Copper (T)................................ 0.553 0.301
Lead (T).................................. 0.567 0.28
Zinc (T).................................. 0.818 0.309
Total phenols............................. 0.617 0.215
Oil and grease............................ 21.5 7.18
TSS....................................... 27.3 10.8
ph........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 0.122
Lead (T)........................... 0.79 0.39 0.158
Zinc (T)........................... 1.14 0.43 0.194
Total phenols...................... 0.86 0.3 0.144
Oil and grease..................... 30 10 3.59
TSS................................ 38 15 7.18
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/62.3 million Sm\3\ (pounds per billion SCF) of air scrubbed.
\2\ These concentrations must be multiplied by the ratio of (0.086/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 SCF of air scrubbed) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.
(e) Investment Casting.
BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
kg/1,000 kkg
(pounds per
million
pounds) of
metal poured
-----------------------------
Copper (T)................................ 8.48 4.63
Lead (T).................................. 8.7 4.3
Zinc (T).................................. 12.6 4.74
Oil and grease............................ 330 110
TSS....................................... 419 165
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\
------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\
Copper (T)......................... 0.77 0.42 1.87
Lead (T)........................... 0.79 0.39 2.42
Zinc (T)........................... 1.14 0.43 2.97
Oil and grease..................... 30 10 55.1
TSS................................ 38 15 110
pH................................. (\3\) (\3\) (\3\)
------------------------------------------------------------------------
\1\ kg/1,000 kkg (pounds per million pounds) of metal poured.
\2\ These concentrations must be multiplied by the ratio of (1,320/x)
where x is the actual normalized process wastewater flow (in gallons
per 1,000 pounds of metal poured) for a specific plant.
\3\ Within the range of 7.0 to 10.0 at all times.
(f) Melting Furnace Scrubber Operations.
BPT Effluent Limitations
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Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
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kg/62.3
million Sm\3\
(pounds per (continued)