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16CALIFORNIA LABORATORY SERVICES <br /> p� t� X, 11q2/16/03 09 14 <br /> ENSR-Sacramento Project Former Unocal 2859, 1665 r&W�egSt3er#nCML0104 <br /> 10411 Old Placerville Rd, Suite 210 Project Number 06940-357-100 <br /> Sacramento,CA 95827-2508 Protect Manager Ben Heningburg COC# <br /> IGasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CL30508-EPA 5030 Water GC <br /> LCS(CL30508-BSI) Prepared&Analyzed 12/04/03 <br /> Gasoline 455 50 µg/L 500 910 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 187 200 935 65-135 <br /> LCS Dup(CL30508-BSDI) Prepared&Analyzed 12/04/03 <br /> Gasoline 451 50 µg/L 500 902 65-135 0 883 30 <br /> ' Surrogate o-Chlorotoluene(Gas) 190 200 950 65-135 <br /> Matrix Spike(CL30508-MS1) Source CML0104-04 Prepared&Analyzed 12/04/03 <br /> Gasoline 473 50 µg/L 500 ND —946 65-135 <br /> MILd.Surragate o-Chlorotoluene(Gas) 186 11200 930 65-135 <br /> Atrix Spike Dup(CL30508-MSD1) Source CML0104-04 Prepared&Analyzed 12/04/03 <br /> Gasoline 474 50 µg/L 500 ND 948 65-135 0 211 30 <br /> Surrogate o-Chlorotoluene(Gas) 176 200 880 65-135 <br /> Batch CL30542-EPA 5030 Water GC <br /> IBlank(CL30542-BLKI) Prepared&Analyzed 12/05/03 <br /> Gasoline ND 50 pg/L <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 1 0 " <br /> Surrogate o-Chlorotoluene(Gas) 203 200 102 65-135 <br /> ILCS(CL30542-BSI) Prepared&Analyzed 12/05/03 <br /> Gasoline 437 50 pg/L 500 874 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 183 200 915 65-135 <br /> CA DOHS FLAP Accred ttation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www caltforntalaLcom 916-638-7301 Fax. 916-638-4510 <br />