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SIERRA I.ABQRATORfES INC ' <br /> G H H Date Sampled 10/31/97 ' <br /> 8085 Old Auburn Road Date Received 11/4/97 <br /> Citrus Heights, CA 95610 Date Prepared 11/5/97 <br /> Date Analyzed 1115/97 <br /> Sierra Protect No 9711-017 Analyst SM <br /> Client Project ID: 5007 101USA Stockton <br /> Sample Matrix Water Report Date 11/11/97 ' <br /> EPA METHOD 8020-BTEXIEPA METHOD 8015-Gasoline Range Hydrocarbons (C4-C12) <br /> (Purge& Trap) <br /> Concentration,µ <br /> Method ' <br /> Client Sample No MW-4P MW 6P MW-51? MW-3P MW-1 MW-2P MW-1P Detection <br /> Limit, <br /> Sierra Sample No 19075 19076 19077 19078 19079 19080 19081 �iFh <br /> COMPOUNDS <br /> Benzene ND ND ND ND 060 150 1 1 0 5 <br /> Toluene ND ND ND ND 18 9 0 ND 05 <br /> Ethvlbenzene ND ND ND ND 14 21 ND 0 5 <br /> Total Xylenes ND ND ND ND 5 0 19 ND 0 5 . <br /> Gasoline ND ND ND 110 1800 1000 ND 50 <br /> Dilution Factor i 1 1 i 1 1 1 QC Limits <br /> % Surrogate Recovery <br /> a,a,a-Tnfluorotoluene 99 L1091 100 110 120 100 92 70-125 <br /> Quality Assurance/Quality Contra/Data <br /> LQCSample ID 9711-43-19200 <br /> LCS Spike Spike Dup QC QC <br /> Compounds % Rec % Rec % Rec Limits RPD Limits <br /> Benzene 93 93 91 39-150 14 0-30 <br /> Toluene 105 90 90 46-148 0 0 0-30 <br /> Ethvlbenzene 102 91 90 32-160 17 0-30 <br /> 107 104 104 50-150 0 2 0-30 <br /> N D means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> i <br /> 1 <br />