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SIERRA LABORATORIES INC <br /> Park Environmental Corporation Date Sampled: 9122195 <br /> 8084 Old Auburn Road,Suite E Date Received: 9/26/95 <br /> Citrus Heights, CA 95610 ,Date Prepared: 9/27-9/28195 <br /> Date Analyzed: 9127-9128195 <br /> Sierra Project No.: 9509-153 Analyst: SM <br /> Client Project ID: 502343/Diain Lumb -Manteca <br /> ' Sample Matrix: Water Report Date: 10/12195 <br /> EPA METHOD 8020-BTEX/ <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) <br /> Concentration,µgll <br /> BEi BEi Method <br /> Client Sample No.: MW-2 MW-3 Detection <br /> ' Limit, <br /> Sierra Sample No : 8070 8071 pg/l <br /> ' COMPOUNDS: <br /> Benzene 330 7000 05 <br /> Toluene 10 1200 05 <br /> Ethylbenzene 27 950 05 <br /> Total Xylenes 42 5900 05 <br /> Gasoline Range 2100 39000 50 <br /> Dilution Factor 1, 5 50 QC Limits <br /> % Surrogate Recovery- <br /> 1-Chloro-2-fluorobenzene 83 81 60-130 <br /> ' Quality Assurance/Quality Control Data <br /> QC Sample ID: 9509-133-7947 <br /> ' LCS QC Spike Spike Dup QC QC <br /> Compounds % Rec. Limits % Rec. % Rec. Limits RPD Limits <br /> Benzene 86 80-120 89 91 39-150 28 0-30 <br /> Toluene 86 80-120 88 90 46-148 22 0-30 <br /> Ethylbenzene 86 80-120 87 89 32-I60 34 0-30 <br /> Gasoline 93 80-120 95 93 50-150 25 0-30 - <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br />