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SIERRA LABORATORIES INC <br />' Park Environmental Corporation Date Sampled: 1{)/6/95 <br /> 8054 Old Auburn Road Date Received: 10/10/95 <br />' Citrus Heights, CA 95610 Date Prepared: 10/12 and 10/13/95 <br /> Date Analyzed: 1.0112 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 /> Concentration,11g/1 <br /> Travel Method <br /> Client Sample No.: MW-1 P MW-4P Blank Detection <br /> Limit, <br /> Sierra Sample No.: 8614 8615 8616 ug/1 <br /> COMPOUNDS: <br /> Benzene ND ND ND 05 <br /> ' Toluene ND ND ND 05 <br /> Ethylbenzene ND ND ND 05 <br /> Total Xylenes ND ND ND 05 <br /> Gasoline ND ND ND 50 <br /> ' Dilution Factor 1 i 1 QC Lim, <br /> rill-Chloro-2-fluorobenzene <br /> Surrogate Recovery <br /> 90 95 92 60_131 <br /> I�QC.Sample ID: 9510-94-8725 Quality Assurance/Quality Control Data <br /> LCS Spike Spike Dup QC I QC <br /> Compounds % Rec. % Ree. % Rec. Limits RPD Limits <br /> ' Benzene 100 96 100 39-150 41 0-30 <br /> Toluene 93 91 94 46-148 3 0 0-30 <br /> Ethylbenzene 91 88 91 32-160 3 1 0-30 <br /> Gasoline 107 98 I03 50-150 43 0-30 <br /> ND means Not Detected <br /> Reporung Limit(RL)=Method Detection Linut(MDL)x Dilution Factor <br /> S <br />