CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY > SUBPART M—Secondary Lead Subcategory (§421.130 to §421.137) > 421.132—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

421.132—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:
(a) Subpart M—Battery Cracking
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead scrap produced
Antimony 1.932 .862
Arsenic 1.407 .579
Lead .283 .135
Code of Federal Regulations 525
Zinc .983 .411
Ammonia (as N) .000 .000
Total suspended solids 27.600 13.130
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony 7.491 3.341
Arsenic 5.455 2.245
Lead 1.096 .522
Zinc 3.811 1.592
Ammonia (as N) .000 .000
Total suspended solids 107.000 50.900
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(c) Subpart M—Kettle Wet Air Pollution Control
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from refining
Antimony .129 .058
Arsenic .094 .039
Lead .019 .009
Zinc .066 .027
Ammonia (as N) .000 .000
Total suspended solids 1.845 .878
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(d) Subpart M—Lead Paste Desulfurization
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead processed through desulfurization
Antimony .000 .000
Arsenic .000 .000
Lead .000 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Total suspended solids .000 .000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(e) Subpart M—Casting Contact Cooling
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead cast
Antimony .634 .283
Arsenic .462 .190
Lead .093 .044
Zinc .323 .135
Ammonia (as N) .000 .000
Total suspended solids 9.061 4.310
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(f) Subpart M—Truck Wash.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony .060 .027
Arsenic .044 .018
Lead .009 .004
Zinc .031 .013
Ammonia (as N) .000 .000
Total suspended solids .861 .410
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(g) Subpart M—Facility Washdown
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony .000 .000
Arsenic .000 .000
Lead .000 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Total suspended solids .000 .000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(h) Subpart M—Battery Case Classification.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead scrap produced
Antimony .000 .000
Arsenic .000 .000
Lead .000 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Total suspended solids .000 .000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(i) Subpart M—Employee Handwash.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony .077 .035
Arsenic .056 .023
Lead .011 .005
Zinc .039 .016
Ammonia (as N) .000 .000
Total suspended solids 1.107 .527
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(j) Subpart M—Employee Respirator Wash.
BPT Effulent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony .126 .056
Arsenic .092 .038
Lead .018 .009
Zinc .064 .027
Ammonia (as N) .000 .000
Total suspended solids 1.804 .858
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(k) Subpart M—Laundering of Uniforms.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of lead produced from smelting
Antimony .367 .164
Arsenic .268 .110
Lead .054 .026
Zinc .187 .078
Ammonia (as N) .000 .000
Total suspended solids 5.248 2.496
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
[49 FR 8826, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984]