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Page 3 of 6 <br /> TABLE 1 <br /> ANALYTICAL RESULTS SUMMARY <br /> SEMI-ANNUAL GROUNDWATER SAMPLING <br /> MAINTENANCE FACILITY <br /> TRACY,CALIFORNIA <br /> NOVEMBER 2009 <br /> Sample Location: MW-02A MW-02B MW-09A MW-10A <br /> Sample ID: WG-2480-MW-2A-201109 WG-2480-MW-2B-201109 WG-2480-MW-9A-201109 WG-2480-MW-10A-201109 <br /> Sample Date. 11/20/2009 11/20/2009 11/20/2009 11/20/2009 <br /> Parameters Units <br /> Volatile Organic Compounds(Cont'd.) <br /> Methylene chloride µg/L <5.0 <5.0 <5.0 <5.0 <br /> Naphthalene µg/L <1.0 <1.0 <1.0 <1.0 <br /> N-Butylbenzene µg/L <1.0 <1.0 <1.0 <1.0 <br /> N-Propylbenzene µg/L <1.0 <1.0 <1.0 <1.0 <br /> Styrene µg/L <0.50 <0.50 <0.50 <0.50 <br /> tert-Butylbenzene pg/l, <1.0 <1.0 <1.0 <1.0 <br /> Tetrachloroethene µg/L <0.50 <0.50 <0.50 <0.50 <br /> Toluene µg/L <0.50 <0.50 <0.50 <0.50 <br /> trans-1,2-Dichloroethene µg/L <0.50 <0.50 <0.50 <0.50 <br /> trans-1,3-Dichloropropene µg/L <0.50 <0.50 <0.50 <0.50 <br /> Trichloroethene µg/L <0.50 <0.50 <0.50 <0.50 <br /> Trichlorofluoromethane(CFC-11) µg/L <1.0 <1.0 <1.0 <1.0 <br /> Trifluorotrichloroethane(Freon 113) µg/L <0.50 <0.50 <0.50 <0.50 <br /> Vinyl acetate µg/L <10 <10 <10 <10 <br /> Vinyl chloride µg/L <0.50 <0.50 <0.50 <0.50 <br /> Xylene(total) µg/L <1.0 <1.0 <1.0 <1.0 <br /> Petroleum Products <br /> Total Petroleum Hydrocarbons(C10-C28)DRO µg/L 780 <53 420 230 <br /> Petroleum Products-Silica Gel Cleanup <br /> Total Petroleum Hydrocarbons(C10-C28)DRO µg/L <55 <52 <52 <52 <br /> CRA 058324Memo-37-T1 <br />