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' SIERRA LABORATORIES INC <br />' Park Environmental Corporation Date Sampled: 9/25195 <br /> 8085 Old Auburn, Road, Suite E Date Received: 9/29/95 <br /> ' Citrus Heights, CA 95610 Date Prepared: 10/8/95 <br /> Date Analyzed: 10/8/95 <br /> Sierra Project No.: 9509-188 Analyst: SM <br /> Client Project ID: 500742/USA Stockton <br /> ' Sample Matrix: Soil Report Date. 10/20/95 <br /> EPA METHOD 8020-BTEX/ <br /> ' EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) <br /> Concentration, mg/kg <br /> B-6-P @ B-6-P @ B-6-P @ B-6-P @ Method <br /> Client Sample No.: 10 5'-11 0' 2051-21 0' 30 5'-310' 40 5'41 0' Detection <br /> Limit, <br /> Sierra Sample No.: 8261 8262 826.3 8264 mg/kg <br /> COMPOUNDS: <br /> Benzene ND ND ND ND 0 003 <br /> Toluene 00052 ND 00032 ND 0 003 <br /> Ethylbenzene ND ND ND ND 0 003 <br /> Total Xylenes 00050 ND ND ND 0 003 <br /> Gasoline Range ND ND ND ND 05 <br /> Dilution Factor I 1 I 1 QC Limits <br /> % Surrogate Recovery <br /> 1-Chloro-2-fluorobenzene 66 81 80 77 30-130 <br /> ' Quality Assurance/Quality Castrol Data <br /> QC Sample ID. 9509-188-8268 <br /> LCS QC Spike Spike Dup QC QC <br /> ' Compounds % Rec. Limits % Rec % Rec. Limits RPD Limits <br /> Benzene 94 80-120 86 94 39-150 9 7 0-30 <br /> ' Toluene 88 80-120 80 88 46-148 10 0-30 <br /> Ethylbenzene 85 80-120 76 84 32-160 11 0-30 <br /> Gasoline 100 80-120 87 86 50-150 0 6 —LO-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL) x Dilution Factor <br />