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SIERRA LABORATORIES[NC ' <br /> The Park Corporation Date Sampled: 1/23/97 <br /> 8084 Old Auburn Road Date Received 1/29/97 <br /> Citrus Heights, CA 95610 Date Prepared 1/24197 <br /> Date Analyzed 1/29/97 <br /> Sierra Project No 970I-241 Analyst- SM <br /> Client Project ID: 505945/USA-Lodi ' <br /> Sample Matrix Water Report Date 1/30/97 <br /> EPA METHOD 8020-13TEX/ , <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) ' <br /> - —Concentration — <br /> Meth6d <br /> Client Sample No MW-7 MW-5 MW-6 MW-4 Detection <br /> Limit, <br /> Sierra Sample No O1 I51 01152 01153 01154 gg/I <br /> COMPOUNDS ' <br /> Benzene ND ND ND ND 05 <br /> Toluene ND ND ND ND 05 <br /> Ethylbenzene ND ND ND ND 05 <br /> Total Xylenes ND ND ND ND 05 <br /> MTBE ND ND ND ND 50 <br /> Gasoline Range ND ND ND ND 50 ) <br /> Dilution Factor 1 1 1 1 QC Limits ' <br /> % Surrogate Recovery <br /> 4-Bromofluorobenzene 89 86 89 85 70-125 <br /> QC Sample ID 9701-200-00901 <br /> Quality Assurance/Quality Control Data <br /> 'LCS Spike Spike Dup QC QC <br /> Compounds % Rec % Rec % Rec Limits RPD Limits <br /> Benzene 94 98 100 39-150 2 3 0-30 ' <br /> Toluene 96 100 102 46-148 2 7 0-30 <br /> Ethylbenzene 93 100 102 32-160 27 0-30 <br /> Gasoline 92 96 84 150-150113 0-30 ' <br /> ND means Not Detected <br /> Reporting Limit(RL)=McAhod Detection Limit(MDL)x Dilution Factor _ ' <br />