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Electronic Code of Federal Regulations

e-CFR Data is current as of March 26, 2015

Title 40Chapter ISubchapter NPart 421Subpart I → §421.96

Title 40: Protection of Environment
Subpart I—Metallurgical Acid Plants Subcategory

§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 propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of 100 pct sulfuric acid capacity

1For Molybdenum acid plants only.

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

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