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AMENDMENT OF WASTE DISCHARGE REQUIREMENTS -9- ATTACHMENT A A-1 <br /> RESOLUTION NO.R5-2005-0110 AMENDMENT OF WASTE DISCHARGE REQUIREMENTS <br /> CITY OF MANTECA RESOLUTION NO.R5-2005- <br /> WASTEWATER QUALITY CONTROL FACILITY CITY OF MANTECA <br /> SAN JOAQUIN COUNTY WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY <br /> I,THOMAS R.PINKOS,Executive Officer,do hereby certify the foregoing is a full,true,and correct TABLE 15 <br /> copy of a Resolution adopted by the California Regional Water Quality Control Board,Central Valley SUMMARY OF HUMAN CARCINOGENIC POLLUTANT STATISTICS <br /> Region,on 5 August 2005. BROMODICHLOROMETHANE AND DIBROMOCHLOROMETHANE <br /> c c <br /> L L <br /> N N <br /> O O <br /> THOMAS R.PINKOS,Executive Officer o `o <br /> L L <br /> O ° <br /> O <br /> E o <br /> Sample Date ° <br /> M o <br /> Concentrations in u /I o m` <br /> April-04 5.5 25.7 <br /> May-04 0.5 14.0 <br /> June-04 0.5 17.0 <br /> July-04 0.5 17.0 <br /> September-04 3.5 15.0 <br /> October-04 3.9 17.0 <br /> November-04 2.4 13.0 <br /> December-04 1.3 7.5 <br /> January-05 1.2 9.2 <br /> February-05 1.6 9.4 <br /> March-05 2.5 14.0 <br /> April-05 2.6 14.0 <br /> Sample Count 12 12 <br /> Max.Concentration(pg/1) 5.50 25.70 <br /> Mean(Ng/1) 2.17 14.40 <br /> Median(ug/1) 2 14 <br /> Std.Dev. 1.55 4.77 <br /> Cv 0.72 0.33 <br /> Estimated Max.Effluent <br /> Concentration(pg/1)t1I 7.3 30.1 <br /> Human Health Criteria 0.41 0.56 <br /> Background Cone.(pg/1)(2) <0.3 <0.2 <br /> Needed Dilution Credif" 63 82 <br /> (1)Estimated MEC calculated as the mean plus 3.3 times the standard deviation. <br /> (2)Lowest MDL utilized for background concentration,per Section 1.4.3.2 of SIP. <br /> (3)Needed Dilution Credit=(Est.max.conc.-HH Criteria)/(HH criteria-background conc.) <br />