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SIERRA LABORATORIES INC <br /> 1 <br /> GHH Englneei s, Inc. Date Sampled. 7/7/99 1 <br /> 8084 Old Auburn Road, Suite E Date Received: 7/9/99 <br /> Citrus Hteghts, CA 95610 - _ - - c - -- _==Date Prepared. 7//2/99=-� - <br /> Sierra Protect No : 9907-I66 Date Analyzed. 7/12/99 t <br /> Client Project ED: USA-Stockton/5007 10 Analyst- SM <br /> Sample Matrix: Water Report Date: 7/13/99 , <br /> EPA METHOD 8020-BTEX/EPA METHOD 8015-Gasolme Range Hydrocarbons(C4-C12) <br /> (Pu e&Tra ) <br /> Concentration,u <br /> Client Sample No MW-4P MW-6P MW-3P MW-1 MW-2P MW-IP MW-2 MW-5P Method , <br /> Detection <br /> Sierra Sample No: 677 678 679 680 681 682 683 684 Lunit, ' <br /> COMPOUNDS ugh <br /> Benzene ND ND ND 0 71 S I ND } ND <br /> Toluene ND <br /> ND ND ND OS <br /> Ethylbenzene ND ND ND 1 9 29 ND ND ND <br /> Total Xylenes ND ND ND 3 1 58 ND0 5 <br /> ND ND 05 <br /> MTBE <br /> ND ND 28 64 76 ND ND ND 5 0 <br /> Gasoline ND ND 340 750 970 ND ND ND <br /> 50 ' <br /> Dilution Factor 1 1 1 1 1 1 1 1 <br /> %Surrogate Recovery QC Lunits ' <br /> 4-Bromofluorobenzene 110 95 110 120 I20 110 110 <br /> 1 i 0 70-125 <br /> QC Sample ID. 9907-166-683 Quality AssurancelQuahty Control Data <br /> - <br /> LCS Spike Spike Dap QC ' <br /> Corn ounds °/° Rea L QC <br /> %Rec % Rec- Lunits <br /> Benzene 94 98 RPD Limits <br /> Toluene 95 98 97 39-150 10 0-30 <br /> 97 46-148 1 0 �0z30Z <br /> --- ,-_-- Ethvlbenzene _ _ _ --_ 95_--- _----100 ``-- `- - - <br /> Gaso[ute 102 94 <br /> `R mems dot Detecs,d J`-9 --- - 32-160 1 0 0-30 <br /> 50-150 00 —0 - <br /> _30_ - - -- - — — <br /> RLpaning Linut(RL)_%[Lthod Detection Limit(%IDL)♦Dilution Factor <br /> r <br />