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40 C.F.R. § 471.23

New source performance standards (NSPS).

§ 471.23 New source performance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards. The mass of pollutants in the magnesium forming process wastewater shall not exceed the following values:

(a) Rolling spent emulsions.

Subpart B—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off/kg (pounds per million off-pounds) of magnesium rolled with emulsions
Chromium0.0280.011
Zinc0.0760.032
Ammonia9.954.37
Fluoride4.441.97
Oil and grease0.7460.746
TSS1.120.895
pH( 1)( 1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Forging spent lubricants—subpart B—NSPS. There shall be no discharge of process wastewater pollutants.

(c) Forging contact cooling water.

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