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47 FR 23284, May 27, 1982, unless otherwise noted.
67 FR 64268, Oct. 17, 2002, unless otherwise noted.
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Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and must achieve the following pretreatment standards for existing sources (PSES):
(a) Direct-reduced iron. [Reserved]
(b) Forging operations. [Reserved]
(c) Briquetting. There shall be no discharge of process wastewater pollutants to POTWs.