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SIERRA LABORATORIES INC ' <br /> The Park Corporation Date Sampled: 10130/96 <br /> 8084 Old Auburn Road Date Received. 11/1/96 <br /> Citrus Heights, CA 95610 Date Prepared: ll/l/96 <br /> ' <br /> Date Analyzed. 11/1/97 <br /> Sierra Project No : 9611-013 Analyst SM <br /> Client Project ID: 5007-J3/USA Stockton ' <br /> Sample Matrix Water Report Date: 11/13/96 <br /> EPA METHOD 8020-BTEX/ , <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) , <br /> Concentration, µg/1 <br /> Method <br /> Client Sample No.- MW-1P MW-2P MW-31? MW-41? Detection ' <br /> Limit, <br /> Sierra Sample NQ.. 18705 18706 18707 18708 pg/I <br /> COMPOUNDS. ' <br /> Benzene ND 160 ND ND 05 <br /> Toluene ND 16 ND ND 05 <br /> Ethylbenzene ND 98 ND ND 05 <br /> Total Xylenes ND 10 ND ND 05 <br /> MTBE ND ND ND ND 50 <br /> Gasoline Range ND 1300 ND ND 50 <br /> Dilution Factor 1 1 1 1 QC Limits ' <br /> % Surrogate Recovery <br /> 4-13romofluorobenzene 94 110 I10 110 70-125 <br /> 1 <br /> Quality Assurance/Quality Control Data. <br /> QC Sample ID. 9611-87-1928 ' <br /> LCS Spike Spike Dup QC QC <br /> Compounds %Rec % Rec %Ree Limits RPD Limits <br /> Benzene 96 89 97 39-150 78 0-30 ' <br /> Toluene 100 93 100 46-148 75 0-30 <br /> Ethylbenzene 96 94 102 32-160 87 0-30 <br /> Gasoline 92 99 100 50-150 10 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> I <br />