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• �� May 2005 Monthly Tt,,A Water Self Monitoring Report-1707C <br /> Canepa's Car Wash,Stockton,CA <br /> Page 2 <br /> LABORATORY ANALYTICAL RESULTS <br /> .r A treated water sample collected from the final discharge point was delivered under chain-of-custody to <br /> Argon Laboratories, of Ceres, California (Argon). The sample was analyzed for pH, Oil and Grease, <br /> Benzene, Toluene, Ethyl-benzene, Xylene (BTEX), Methyl-t-Butyl Ether (MTBE), Di-Isopropyl Ether <br /> (D1PE), Ethyl-t-Butyl Ether (ETBE), t-Amyl Methyl Ether (TAME), and t-Butyl Alcohol (TBA). The <br /> treated water final discharge laboratory analytical methods, results, reporting limits and discharge Iimits <br /> are presented in Table 2, below. Laboratory certificates of analysis and the chain-of-custody record are <br /> included in Attachment A. <br /> Table 2-Treated Water Monitoring Laboratory Analytical Results <br /> CONSTITUENT_.J_M.nitorinM Event -` Current <br /> Sample Date 5119105 <br /> Lab I Field* <br /> Analytical Reporting Discharge <br /> Method Limit/Units Limit/Units <br /> Oil and Grease EPA 1664 5 mg/L 100 Me <2.0 mg/L <br /> Benzene EPA 8260B 0.5µg11 0.5 mg/l <0.5µg11 <br /> Toluene EPA 8260B 0.5µg11 Total <0.5µg/1 <br /> Ethyl Benzene EPA 9260B 0.5µg11 Including benzene <0.5µg/1 <br /> Xylenes EPA 8260B 1.0µg11 4.57 mg/1 <1.0 ggll <br /> MTBE EPA 8260B 0.5µg11 ND <0.5 gg/l <br /> DIPE EPA 8260E 0.5µg11 ND <0.5µg11 <br /> ETBE EPA 8260B 0.5µ0 ND <0.5 gg/l <br /> TAME EPA 8260B 0.5 jig/] ND <0.5µg/l <br /> TBA EPA 8260B 5.0µg11 ND <5.0µg/1 <br /> Cadmium EPA 200.7 0.005 mg/l 2.0 mg/I NT <br /> Chromium EPA 200.7 0.01 mg/1 5.0 mg/I NT <br /> Copper EPA 200.7 0.01 mg/I 6.0 mg/I NT <br /> Lead EPA 200.7 0.01 mg/l 2.0 mg/1 NT <br /> Nickel EPA 200.7 0.01 mg/l 5.0 mg/l NT <br /> ,Zinc EPA 200.7 0.02 mg/1 7.0 mg/l NT <br /> Total Toxic Organics EPA 624 and 0.5-100 mg/1 Total=4.57 mg/l NT <br /> 625 Benzene=0.5 mg/l <br /> pH(lab:field*) EPA 150.1 Std.Units 5-10 8.3 T NT <br /> Units- Analytical: <br /> mg/L=milligrams per liter=parts per million(ppm) B,T,E,X=benzene,toluene,ethyl benzene,total xylenes <br /> gg/L=micrograms per liter=parts per billion(ppb) TPH-G=total petroleum hydrocarbons quantified as gasoline <br /> Gasoline oxygenates/additives= methyl tertiary-butyl ether(MTBE),tertiary- <br /> butanol (TBA), di-isopropyl ether(DIPE),ethyl tertiary butyl ether(ETBE), <br /> tertiary-amyl methyl ether(TAME) <br /> Notes: <br /> NT=not tested during this monitoring event <br /> *=treated water Field Measurements for pH <br /> FUTURE WORK <br /> Continue monthly self-monitoring of the site through cessation.of the groundwater treatment project or as <br /> i deemed necessary by the Client or MUD, <br /> ;a CONDOR <br />