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5 <br /> August 2005 Monthly Treated Water Self Monitoring Report—1707C <br /> Cdnepa s Car Wash Stockton,CA <br /> Page 2 <br /> LABORATORY ANALYTICAL RESULTS <br /> A treat(•d 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-lsopropyl Ether <br /> (DIPE), 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 limits <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 Monitoring Event Current <br /> Samp1(.Date + 8119105 <br /> Lab I Field* <br /> Analytical Repoitmg Discharge <br /> Method Llmit/Umts Limit/Units <br /> Oil and Grease EPA 1664 5 mg/L 100 mg/l <5 0 mg/L <br /> Benzene EPA 8260B 0 5µg/I 0 5 mg/1 <0 5µg11 <br /> Toluene EPA 8260B 0 5µg/t Total 2 0µg11 <br /> Ethyl Benzene EPA 82608 0 5µg/1 Including benzene <0 5 pg/l <br /> Xylenes EPA 8260B 1 Ogg/1 4 57 mg/I <1 0 pg/I <br /> MTBE EPA 82606 0 5 pg/l ND <0 5µg/1 <br /> DIPE EPA 8260B 0 5µg/i ND <0 5µg/1 <br /> ETBE EPA 8260B 0 5 pg/l ND <0 5µg/1 <br /> TAME EPA 8260B 0 5 pg/1 ND <0 5 pg/I <br /> TSA EPA 8260B 5 0 pg/I ND <5 0 pg/l <br /> Cadmium EPA 200 7 0 005 mg/I 2 0 mg/1 NT <br /> Chromium EPA 200 7 0 01 mg/1 5 0 mg/I NT <br /> Copper EPA 200 7 0 01 mg/l 6 0 mgll NT <br /> Lead EPA 200 7 0 01 mg/1 2 0 mg/1 NT <br /> Nickel EPA 200 7 0 01 mg/l 5 0 mg/1 NT <br /> Zinc EPA 200 7 0 02 mg/1 7 0 mg/t NT <br /> Total Toxic Organics EPA 624 and 0 5-100 mg/I Total=4 57 mg/1 NT <br /> 625 Benzene=0 5 mg/1 <br /> pH(lab field*) EPA 150 1 Std Units 5-10 7 9 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 /> µg/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 /> lutiary-amyi metnyi ether(TAME) <br /> Nines <br /> NT=not tested dui Mg this monitoring event,Metals and Total Organics Analyzed Annually In September <br /> * <br /> =treated watei 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 /> deemed necessary by the Client or MUD <br /> 4M <br /> �`a CONDOR <br />