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SIERRA LABORATORIES INC , <br /> GHH Engineering, Inc. Date Sampled: 1/16/98 <br /> 8084 Old Auburn Road, Suite E Date Received- 1120/98 . <br /> Citrus Heights, CA 95610 Date Prepared 1/22/98 , <br /> Date Analyzed 1122198 <br /> Sierra Project No.- 9801-156 Analyst SM <br /> Client Project ID " ` 5059 10/USA-LODI <br /> Sample Matrix- Water Report Date. 1/23198 <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-3 MW-2 N[W-1 MW-8 Detection <br /> Limit, <br /> Sierra Sample No . 793 794 795 796 111g" , <br /> COMPOUNDS - <br /> Berizene ND ND ND ND 05 <br /> Toluene ND ND ND ND 05 , <br /> EthylberEzene ND ND ND ND 05 <br /> Total Xylenes ND ND ND ND 05 <br /> MTBE ND ND ND ND 50 •' <br /> Gasoline Range s. M ND ND ND ND - --50- s <br /> Dilution Factor 1 1 1 I QC Limits t <br /> %Surrogate Recovery <br /> 4-Bromofluorobenzene 94 94 95 96 70-125 <br /> Quality Assurance/Quality Control Data ' <br /> QC Sample ID: 9801-129-605 <br /> LCS QC Spike Spike Dup QC QC <br /> Compounds % Rec Limits % Rec % Rec Limits RPD Limits <br /> Benzene 99 80-120 93 94 39-150 107 0-30 ' <br /> Toluene 100 80-120 100 100 46-148 000 0-30 <br /> Ethylbenzene 102 80-120 100 100 32-160 000 0-30 <br /> Gasoline 108 80-120 lot 103 50-150 2 0 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> • <br /> r <br />