6090

Range

Source: U.S. Environmental Protection Agency, 1973-1985, Secondary treatment regulation, Code of Federal Regulations, Title 40, part 133 (Washington, D.C.: U.S. Government Printing Office).

*( ) denotes value applicable to treatment equivalent to secondary treatment. Adjustment available for effluents from trickling filter facilities and waste stabilization pond facilities.

tIf CBOD5 is approved substitute for BOD5, the CBOD5 limitations are: 40 mg/L Maximum 30-day average 60 mg/L Maximum 7-day average 65% removal Minimum 30-day average

Source: U.S. Environmental Protection Agency, 1973-1985, Secondary treatment regulation, Code of Federal Regulations, Title 40, part 133 (Washington, D.C.: U.S. Government Printing Office).

*( ) denotes value applicable to treatment equivalent to secondary treatment. Adjustment available for effluents from trickling filter facilities and waste stabilization pond facilities.

tIf CBOD5 is approved substitute for BOD5, the CBOD5 limitations are: 40 mg/L Maximum 30-day average 60 mg/L Maximum 7-day average 65% removal Minimum 30-day average plied. Effluent requirements must be tailor-made for each discharger along this group of water.

The NPDES requires all dischargers to file a standardized report with the EPA and their state agency. This report indicates the quality and quantity of their discharges. Where appropriate, the state and the EPA can respond to the report with a set of effluent limits, an abatement schedule to meet the effluent limits, and a monitoring schedule. A permit is issued upon agreement by the discharger, interested citizens, the state regulatory agency, and the EPA.

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