THE COUNTY SANITATION DISTRICTS OF LOS ANGELES COUNTY (CSDLAC) OPERATES THE JOINT WATER POLLUTION CONTROL PLANT IN CARSON, CA. THE PLANT IS AN ADVANCED PRIMARY SEWAGE TREATMENT WORKS, AND DISCHARGES TO SANTA MONICA BAY. CSDLAC IS IN VIOLATION OF CWA AS A RESULT OF ITS FAILURE TO ACHIEVE THE EFFLUENT LIMITS OF ITS PERMIT RELATED TO SECONDARY TREATMENT. CSDLAC IS ALSO RESPONSIBLE FOR VIOLATIONS OF ITS PERMIT CONDITIONS RELATED TO THE ACHIEVEMENT OF WATER QUALITY STANDARDS IN SANTA MONICA BAY. CSDLAC IS ALSO RESPONSIBLE FOR CWA VIOLATIONS RESULTING FROM SPILLS FROM ITS SEWAGE COLLECTION SYSTEM, AND FOR UNAUTHORIZED DISCHARGES OF CENTRATE FROM ITS OUTFALLS BETWEEN JUNE AND DECEMBER 1988. REGION 9 IS SEEKING A DECREE REQUIRING CSDLAC TO CONSTRUCT SECONDARY TREATMENT FACILITIES AND TO IMPROVE ITS PROGRAM FOR PREVENTING AND CONTROLLING SPILLS FROM ITS SEWAGE COLLECTION SYSTEM, AND ASSESSING PENALTIES FOR ITS PAST VIOLATIONS.