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SIERRA LABORATORIES INC ' <br /> i <br /> GHH Engineering, Inc. Date Sampled 1016197 <br /> 8084 Old Auburn Road Date Received 1018197 ' <br /> Citrus Heights, CA 95610 Date Prepared 1019197 <br /> ,Sierra Project No.. 9710-068 Date Analyzed 1019197Analyst. SM <br /> Client Protect ID USA Lodi/5059 10 <br /> Sample Matrix: Water Report Date- 10/13/97 1 <br /> EPA METHOD 8020-BTEX/EPA METHOD 8015-Gasolene Range Hydrocarbons (C4-C12) <br /> {Purge&Trap) � <br /> Concentration, µgll <br /> Method , <br /> Client Sample No : MW-7 MW-5 MW-6 MW-4 MW-8 S-2 MW-3 MW-1 MW-2 Detection <br /> 'Sierra Sample No I7611 17612 17613 17614 17615 176I6 17617 17618 17619 Lumt,µg/1 <br /> COMPOUNDS <br /> Benzene ND ND ND 0 97 5 4 200 20 ND ND 0 5 <br /> Toluene ND ND ND 5 4 12 95 ND ND ND 0 5 <br /> Ethylbenzene —ND_ ND ND ND ND 4 1 12_ ND ND 0 5 <br /> Total Xylenes ND ND ND _ 15 _ 18 690 28 _ND ND_ 0 5 <br /> MTBE ND ND ND ND ND_ 32 ND ND_ ND _ 5 0--- <br /> Gasoline ND ND ND 150 700 6000 120 ND ND 50 <br /> Dilution Factor 1 1 1 1 1 10 1 1 l ' <br /> QC Limits <br /> % Surrogate Recovery <br /> a,a,a-Trifluorotoluene 110 110 110 110 1I0 110 110 110 110 70-125 ' <br /> Quality Assurance/Quality Control Data ' <br /> QC Sample ID 9710-49-17512 <br /> LCS iSpike Spike Dup QC QC <br /> Compounds % Rec % Rec. % Rec Lunits RPD Limits <br /> Benzene 110 88 100 39-150 13 0-30 <br /> Toluene 108 88 100 46-148 13 0-30 <br /> Ethylbenzene 105 90 102 32-160 I3 0-30 <br /> Gasoline 109 101 113 50-150 11 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL) = Method Detection Linut(MDL)x Dilution Factor <br />