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The Code of Federal Regulations (CFR) annual edition is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government produced by the Office of the Federal Register (OFR) and the Government Publishing Office.


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Electronic Code of Federal Regulations

e-CFR data is current as of April 17, 2015

Title 40Chapter ISubchapter NPart 422Subpart C → §422.30


Title 40: Protection of Environment
PART 422—PHOSPHATE MANUFACTURING POINT SOURCE CATEGORY
Subpart C—Phosphate Subcategory


§422.30   Applicability; description of the phosphate subcategory.

The provisions of this subpart are applicable to discharges of pollutants resulting from the manufacture of sodium tripolyphosphate, animal feed grade, calcium phosphate and human food grade calcium phosphate from phosphoric acid. The production of human food grade calcium phosphate creates waste water pollutants not completely amenable to the procedures utilized for best practicable control technology currently available. The standards set for human food grade calcium phosphates accordingly must differ from the rest of the subcategory at this level of treatment.


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