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SIERRA LABORATORIES INC <br /> The Park Corporation Date Sampled: 7119196 <br /> 8084 OId Auburn Road, Suite E Date Received: 7/23/96 <br /> Citrus Heights, CA 95610 Date Prepared: 7/25-7126196 ' <br /> Date Analyzed: 7125-7/26/96 <br /> Sierra Project No.: 9607-184 Analyst- SM ' <br /> Client Project ID: 5007-J3/USA Stockton#11.0 <br /> Sample Matrix: Water Report Date: 8/7196 <br /> EPA METHOD 8020-BTEX/ <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) r <br /> (PURGE AND TRAP) <br /> Concentration, µg/1 <br /> Method <br /> Client Sample No.: MW-5P I MW-6P Detection <br /> Limit, <br /> Sierra Sample No.: 12309 12310 µg/I <br /> COMPOUNDS: t <br /> Benzene ND ND 05 <br /> Toluene ND ND 0.5 <br /> Ethylbenzene ND ND 05 <br /> Total Xylenes ND ND 0.5 <br /> I TME ND ND 5.0 <br /> Gasoline Range - ND ND 50 <br /> Dilution Factor 1 ' <br /> l QC Limits <br /> % Surrogate Recovery <br /> 4-Brornofluorobenzene 93 1 93 70-125 <br /> QC Sample ID: 9607-197-12350 Quality Assurance/Quality Control Data <br /> LCS QC Spike Spike Dup QC QC <br /> Compounds % Rec. Limits % Rec. % Rec. Limits RPD Limits <br /> Benzene 99 80-120 84 86 77-111 2 3 0-30 <br /> Toluene 100 80-120 87 89 78-113 26 0-30 <br /> Ethylbenzene 100 80-120 87 89 75-113 20 0-30 <br /> Gasoline 95 80-120 99 103 76-113 36 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br />