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SIERRA LABORATORIES INC <br /> HH Engineering Inc. Date Sampled: 10/8/97 <br /> 8084 Old Auburn Road, Suite E Date Received: 1019/97 <br /> Citrus Heights,CA 95610 Date Prepared: 10/13/97 <br /> Date Analyzed: 10/13/97 <br /> Sierra Project No.: 9710-097 Analyst: SM <br /> Client Project ID: 5059/USA#65-Lodi <br /> Sample Matrix: Soil Report Date: 10/16/97 <br /> EPA METHOD 8020-BTEX/EPA METHOD 8015-Gasoline Range Hydrocarbons(C4-C12) <br /> (Purge&Trap) <br /> Concentration,mg/kg <br /> SP-A,B SP-E,F Method <br /> Client Sample No.: C,D G,H Detection <br /> 17834- 17838- Limit, <br /> Sierra Sample No.: 17837 i 17841 mg/kg <br /> COMPOUNDS: <br /> Benzene ND ND 0.003 <br /> Toluene 0.60 0.65 0.003 <br /> Eth lbenzene ND ND 0.003 <br /> Total Xyl nes 3.5 1.7 0.003 <br /> .L <br /> Gasoline 260 80 0.05 <br /> Dilution Factor 50 50 1 QC Limits <br /> %Surrogate Recovery: <br /> 4-Bromofluorobenzene 120 1 120 30-130 <br /> Quality Assurance/Quality Control Data <br /> 1QC Sample ID: 9710-043-174I5 <br /> LCS Spike Spike Dup QC QC <br /> Compounds %Rec. %Rec. %Rec. Limits RPD Limits <br /> Benzene 98 97 96 39-150 1.0 0-30 <br /> Toluene 105 102 102 46-148 0.0 0-30 <br /> Eth (benzene 102 105 1 105 32-160 0.0 0-30 <br /> Gasoline 110 99 103 50-150 3.8 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br />