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SIERRA LABORATORIES INC <br /> Park Environmental Corporation Date Sampled: 3/22/95 <br /> 8084 Old Auburn Road,Suite E Date Received: 3/24/95 <br /> Citrus Heights, CA 95610 Date Prepared• 3/27/95 <br /> Date Analyzed: 3/27/95 <br /> ' Sierra Protect No.: 9503-135 Analyst: SM <br /> Client Project ID: 5007-J3/USA-Stockton <br /> Sample Matrix: Water Report Date: 3/30/95 <br /> EPA METHOD 8020-BTEX/ <br /> ' EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) <br /> ' Concentration, pg/l <br /> Method <br /> Client Sample No.: MW-ll? MW-21? MW-313 Travel Blank Detection <br /> ' Limit, <br /> Sierra Sample No.: 2606 2607 2608 2609 pg/l <br /> COMPOUNDS. <br /> ' Benzene ND 11 1 3 ND 05 <br /> Toluene ND 064 38 ND 05 <br /> Ethylbenzene ND 28 ND ND 0 5 <br /> Total Xylenes ND ND 066 ND 0 5 <br /> Gasoline Range ND 250 570 ND 50 <br /> 1 1 <br /> Dilution Factor 1 I QC Limits <br /> ' <br /> % Surrogate Recovery <br /> 1-Chloro-2-fluorobenzene 83 77 94 88 60-130 <br /> Quality Assurance/Quality Control Data <br /> QC Sample ID: 9503-135-2609 _ <br /> LCS QC Spike Spike Dup QC QC <br /> Compounds - % Rec Limits % Ree % Rec. Limits RPD Limits <br /> Benzene 87 80-120 86 85 39-150 1 5 0-30 <br /> Toluene 88 80-120 91 86 46-148 49 0-30 <br /> Ethylbenzene 87 80-120 86 85 32-160 0 9 0-30 <br /> Gasoline 96 80-120 93 94 50-150 19 0-30 JI <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)r Dilution Factor <br />