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I <br /> SIERRA LABORATORIES WC <br /> I <br /> Date Sampled 04 122'0' <br /> FAuburn, <br /> neering,Inc. Date Received 04 19,02 <br /> tage Oak PI,Suite 2B Date Prepared 04/19/02 <br /> A 95603 Date Analyzed 04.'19102 <br /> Sierra Project No.* 0204-301 <br /> Analyst [v1 W <br /> Client Project ID. USA-Stockton 15007 10 Report Date 04122/02 <br /> Sample Matrix. Water <br /> I <br /> EPA METHOD 8021B-BTEVEPA METHOD 8015-Gasoline Range Hydrocarbons(C4-C12) <br /> ! <br /> (purge&Tran <br /> Coneentr2ti013,ngll <br /> Practical <br /> I <br /> Quantitattan <br /> Client Sample No MW-lp MW-2P MW-31? MW-41? MW-5P MW-6P MW-1 MW-2 Limit, <br /> ` 7919 7920 7921 7922 7923 ug/l <br /> k <br /> Sierra Sample No 7916 7917 7918 <br /> F COMPOUNDS ND ND 1 7 ND 0 5 <br /> Benzene ND ND ND - 0 5 <br /> —697 8 8 5 0 ND ~ ND _ ND - _9 2 - <br /> Tatuene ND _ ND ND (1 <br /> Ethylbenzene 16 ND ND 0 <br /> ND 6 5 10 ND ND_ __ND <br /> _ 1 8 - ND <br /> Total Xylenes ND - ND 170 ND $ 0 <br /> MTBE ND 140 � 53 <br /> k �0 <br /> line ND 860 140_ ND ND ND 460 110_ ---_ ._..--- - <br /> i <br /> 1 1 1 1 1 1 k <br /> 1 QC Limits <br /> Dilution Factor <br /> %Surrogate Recovery 96 120 115 94 94 95 125 117 <br /> 70-125 <br /> I <br /> Quality AssurancelQuality Control Data <br /> 4 QC Sample LD 020419-Blank QC <br /> LCS Spice Spike Dup QC RPD Lirntts <br /> ! %Rec %Rec Limits <br /> Compounds %Rec. 39-150 _ <br /> 9 8 0-30 _ <br /> 97 <br /> Benzene 90 88 98 46-148 —10 0-30 <br /> Toluene 92 88 --- -$8 97 --~10 <br /> 91 _ 32-160 _ _ _ <br /> tliylbenzene 79 - 91 50-150 -14 D-30 <br /> 1j Gasoline 86 <br /> ND means Not Detested <br /> Reporting Ltmn(RL)w Practical Quantitation Lin%(PQL)i Dilumn Factor <br /> r <br />