Pretreatment standards for new sources.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Nonferrous Metals Manufacturing Point Source Category
  7. Metallurgical Acid Plants Subcategory
  8. Pretreatment standards for new sources.

Checkout our iOS App for a better way to browser and research.

§ 421.96 Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in metallurgical acid plant blowdown introduced into a POTW shall not exceed the following values:

Subpart I - Metallurgical Acid Plant - PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of 100 pct sulfuric acid capacity
Arsenic 3.550 1.584
Cadmium 0.511 0.204
Copper 3.269 1.558
Lead 0.715 0.332
Zinc 2.605 1.073
Fluoride1 89.390 50.820
Molybdenum1 [Reserved] [Reserved].

1 For Molybdenum acid plants only.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, Aug. 3, 1990]


Download our app to see the most-to-date content.