CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD

41. Copper Water Quality Objectives. To protect fresh water aquatic life at a hardness of 100 mg/L, the Basin Plan specifies objectives for copper of 11.82 (g/L as a 4-day average and 17.73 (g/L as a 1-hour average. 42. Copper Effluent Limitations. ................
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