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SIERRA LABORATORIES INC <br /> a� <br /> The Parr Corporation Date Sampled. 4/26/96 ' <br /> 8084 Old Auburn Road Date Received 5/1196 <br /> Citrus Heights, CA 95610 Date Prepared 5/2196 ' <br /> Date Analyzed 5/2/96 <br /> Sierra Project No.. 9604-248 Analyst. SM <br /> Client Project ID. 5007-J3/USA Stockton #110 t <br /> Sample Matrix; Water Report Date: 5/9/96 <br /> 1 <br /> EPA METHOD 8020-BTEX/ <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) ' <br /> (PURGE AND TRAP) <br /> Concentration, pg/l <br /> 'Client Sample No.: MW-1P MW-2P MW-31? Method <br /> MW-4P Detection <br /> Limit, ' <br /> Sierra Sample No • 7563 7564 7565 7566 µg/l <br /> COMPOUNDS: <br /> Benzene ND 126 ND ND 05 ' <br /> Toluene ND 75 34 ND 05 <br /> Ethylbenzene ND 48 ND ND 05 <br /> Total Xylenes ND 13 1 I ND 05 <br /> Gasoline Range ND 1000 140 ND 50 ' <br /> Dilution Factor 1 1 l 1 QC Limits ' <br /> % Surrogate Recovery <br /> 4-Bromofluorobenzene 110 100 89 100 60-130 ' <br /> [Q7CS7ampleID- 9604-248-7568 Quality Assurance/Quality Control Data ' <br /> LCS QC Spike Spike Dup QC QC <br /> Compounds % Rec Limits % Rec % Rec Ljmits RPD Limits ' <br /> Benzene 83 80-120 91 89 80-124 14 0-30 <br /> Toluene 84 80-120 92 91 80-120 1 1 0-30 <br /> Ethylbenzene 83 80-120 89 88 80-120 08 0-30 ' <br /> Gasoline 92 80-120 100 108 80-120 80 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br />