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SIERRA LABORATORIES INC <br /> Park Environmental Corporation Date Sampled: 10/6095 <br /> 8054 Old Auburn Road Date Received: 10/10/95 <br /> Citrus Heights, CA 95610 Date Prepared: 10112 and 10/13/95 <br /> Date Analyzed: 10/12 and 10/13/95 <br /> Sierra Project No.: 9510-068 Analyst: SM <br /> ' Client Project ID: USA-Stockton <br /> Sample Matrix: Water Report Date: 10/23/95 <br /> ' EPA METHOD 8020-BTEX/ <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> ' (PURGE AND TRAP) <br /> 11 Concentration,pg/1 <br /> Client Sample N : MW-2P MW-3P MW-SP Method <br /> Detection <br /> Sierra Sample No.: 8610 8611 8612 8613 Limit, <br /> µill <br /> COMPOUNDS: <br /> Benzene 51 070 ND ND 05 <br /> Toluene 41 35 ND ND 05 <br /> Ethylbenzene 24 ND ND ND 05 <br /> Total Xylenes 3 0 1 1 ND ND 05 <br /> Gasolene 530 270 ND ND 50 <br /> ' Dilution Factor 11 1 1 QC Lim, <br /> % Surrogate Recovery <br /> 1-Chloro-2-fluorobenzene 80 95 93 91 60.130 <br /> Quality Assurance/Quality Control Data <br /> Q <br /> IQC Sample ID: 951.0-94-8725 <br /> ' LCS ISpike Spike Dup QC QC <br /> Compounds % Rec. % Rec. % Rec. Limits RPD Limits - - <br /> ' Benzene 100 96 100 39-150 4 1 0_30 <br /> Toluene 93 91 i94 46-148 3 0 0-30 <br /> Ethylbenzene 91 88 91 32-160 3 1 0-30 <br /> ' Gasoline 1107 98 103 50-150 4 3 0-30 <br /> ND means Not Detected <br /> Reporung Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> 1 0 <br /> i <br />