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FACT SHEET, ATTACHME* <br /> -9- <br /> WASTE DISCHARGE REQUIREMENTS ORDER NO. 2000-**** <br /> CITY OF LODI <br /> WHITE SLOUGH WATER POLLUTION CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> j) Pesticides and Unknown Toxicity <br /> The Sacramento-San Joaquin Delta has-been listed as an impaired water body pursuant to Section <br /> 303(d) of the Clean Water Act because of: (1) diazinon and chlorpyrifos (organophoshate pesticides), <br /> (2) aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane <br /> (including lindane), endosulfan and toxaphene (chlorinated hydrocarbon pesticides), (3)DDT, and <br /> (4) unknown toxicity. The Basin Plan requires that; no individual pesticides shall be present in <br /> concentrations that adversely affect beneficial uses; discharges shall not result in pesticide <br /> concentrations in bottom sediments or aquatic life that adversely affects beneficial uses; total chlorinated <br /> hydrocarbon pesticide concentrations shall not be present in the water column at detectable <br /> concentrations and pesticide concentrations shall not exceed those allowable by applicable <br /> antidegradation policies. The Basin Plan's requirement that persistent chlorinated hydrocarbon <br /> pesticides shall not be present in the water column in detectable concentrations is the most stringent <br /> criteria for the regulation of the detected persistent organochlorine pesticides <br /> Analytical results for pesticides on the 303(d)list other than diazinon and chlorpyrifos are summarized <br /> below: <br /> Wastewater Treatment Plant Effluent Sampling Results (µ9/1) <br /> Date aldrin chlordane dieldrin endrin heptachlor heptachlor epoxide lindane endosulfan toxaphene DDT <br /> 12-11-92 <0.01 <0.05 <0.05 <0.05 <0.02 <0.01 0.01 <0.05 <0.05 <0.02 <br /> 01-31-93 --- --- --- --- --- --- <0.2 --- --- --- <br /> 03-14-93 <0.01 <0.05 <0.05 <0.05 <0.02 <0.01 0.051 <0.05 <0.05 <0.02 <br /> 05-23-93 --- --- --- --- --- --- 0.025 --- --- --- <br /> 09-27-93 <0.01 <0.05 <0.05 <0.05 <0.02 <0.01 <0.01 <0.05 <0.05 <0.02 <br /> 05-25-94 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 <0.007 <0.007 <0.50 <0.02 <br /> 08-11-94 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 <0.007 <0.007 <0.50 <0.02 <br /> 11-10-94 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 <0.007 <0.007 <0.50 <0.02 <br /> 02-07-95 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 0.044 <0.007 <0.50 <0.02 <br /> 05-23-95 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 0.047 <0.007 <0.50 0.038 <br /> 08-15-95 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 0.024 <0.007 <0.50 <0.02 <br /> 11-30-95 <0.006 <0.05 --- --- <0.007 <0.007 0.024 --- <0.50 <0.02 <br /> 02-13-96 <0.006 <0.05 <0.007 <0.009 <0.007 <0.007 <0.007 <0.007 <0.50 <0.02 <br /> 05-22-96 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> 08-01-96 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> 12-10-96 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> 02-25-97 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> 05-13-97 <0.25 <2.5 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> 08-12-97 <0.25 <2.5 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <br /> Regulatory and Water Quality Limits, (14g/1) unless otherwise stated: <br />