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SIERRA LABORATORIES INC <br /> The Park Corporation Date Sampled.P 1/24/97 <br /> 8081 Old Auburn Road Date Received. 1/29/97 <br /> Citrus Heights, CA 95610 Date Prepared 1/30/97 <br /> Date Analyzed. 1130/97 <br /> Sierra Project No 9701-242 Analyst SM <br /> Client Project ID: 5007-J3/USA-Stockton #110 <br /> Sample Matrix Water Report Date 213197 <br />' EPA METHOD 8020-BTE <br /> XI <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) <br /> Concentration, µg11 <br /> Method <br /> Client Sample No . MW-5-1' MW-6-P MW-I MW-2 Detection <br /> Limit, <br /> Sierra Sample No 01165 01166 01167 01168 gg/l <br /> COMPOUNDS <br /> Benzene ND ND 082 ND 05 <br /> Toluene ND ND 25 70 05 <br /> Ethylbenzene ND ND 18 ND 05 <br /> Total Xylenes ND ND 3 1 ND 05 <br /> Gasoline Range ND ND <br /> 1I00 74 50 <br /> Dilution Factor 1 1 1 I QC Limits <br /> % Surrogate Recovery <br />' 4-Bromofluorobenzene 100 100 120 100 70-125 <br /> F Sample ID 9701-142 <br /> Quality Assurance/Quality Control Data <br /> LCSSpike Spike Du <br /> QC QC <br /> Compounds % Rec. % Rec % Rec Limits RPD Limits <br />' Benzene 105 98 100 39-150 23 0-30 <br /> Toluene 108 100 IO2 46-148 2 7 0-30 - <br /> Ethylbenzene 105 100 102 32-160 27 JO-30 <br /> Gasoline 99 96 84 50-150 [3 0-30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> E <br />