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Page 15 of 24 <br /> TABLET <br /> ANALYTICAL RESULTS SUMMARY <br /> SEMI-ANNUAL GROUNDWATER SAMPLING <br /> MAINTENANCE FACILITY <br /> TRACY,CALIFORNIA <br /> MARCH 2010 <br /> Sample Location: MW-14A MW-14B MW-14B MW-15A MW-15B <br /> Sample ID: WG-2480-MW-14A-170310 WG-2480-MW-14B-170310 WG-2480-DUP-2-170310 WG-2480-MW-15A-170310 WG-2480-MW-15B-170310 <br /> Sample Date. 3{17/2010 3/17/2010 3/17/2010 3/17/2010 3/17/2010 <br /> Duplicate <br /> Parameters Units <br /> Volatile Organic Compounds(Cont'd.) <br /> Trifluorotrichloroethane(Freon 113) gg/L <0.50 <0.50 <0.50 <0.50 <0.50 <br /> Vinyl acetate gg/L <10 <10 <10 <10 <10 <br /> Vinyl chloride gg/L <0.50 <0.50 <0.50 <0.50 <0.50 <br /> Xylene(total) gg/L <1.0 <1.0 <1.0 <1.0 <1.0 <br /> Metals <br /> Iron mg/L 0.42 - - <0.20 - <br /> Iron(dissolved) mg/L <0.20 <0.20 <br /> Manganese mg/L 0.14 <0.020 <br /> Manganese(dissolved) mg/L 0.11 - - <0.020 - <br /> Petroleum Products <br /> Total Petroleum Hydrocarbons(C10-C28)DRO gg/L 280 <50 <54 <55 <51 <br /> Petroleum Products-Silica Gel Cleanup <br /> Total Petroleum Hydrocarbons(C10-C28)DRO gg/L <54 <50 <54 <55 <51 <br /> Wet <br /> Alkalinity,bicarbonate mg/L 440 - - 410 - <br /> Alkalinity,carbonate mg/L <8.0 <8.0 <br /> Alkalinity,hydroxide mg/L <8.0 <8.0 <br /> Alkalinity,total(as CaCO3) mg/L 440 410 <br /> Ammonia mg/L <0.20 <0.20 <br /> Biochemical oxygen demand(BOD) mg/L 0.85) <2.0 <br /> Chemical oxygen demand(COD) mg/L <20 <20 <br /> Chloride mg/L 200 220 <br /> Dissolved organic carbon(DOC) mg/L 4.0 2.1 <br /> Nitrate(as N) mg/L 1.7 9.0 <br /> Nitrite(as N) mg/L <0.30 <0.30 <br /> Nitrite/Nitrate mg/L 1.7 9.0 <br /> CRA 058324Memo-39-Tt <br />