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SIERRA LABORATORIES INC <br /> Park Corporation Date Sampled: 4/12/96 <br /> 8084 Old Auburn Road Date Received. 4/15/96 <br /> Citrus Heights,CA 95610 Date Prepared: 4/1.8/96 <br /> Date Analyzed. 4/18/96 <br /> Sierra Project No. 9604-125 Analyst- SM <br /> Client Project ID: 502343//) Lumber <br /> Sample Matrix Water Report Date: 4126/96 <br /> EPA METHOD 8020-BTEX/ ' <br /> EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TRAP) <br /> Concentration, lcg/i <br /> Method ' <br /> Client Sample No.. MW-7 MW-8 Detection <br /> Limit, <br /> Sierra Sample No- 6918 6919 99/1 ' <br /> COMPOUNDS. <br /> Benzene 330 ND 05 <br /> Toluene 15 ND 05 <br /> Ethylbenzene 18 ND 05 <br /> Total Xylenes 680 ND 05 <br /> Gasoline Range 4900 ND 50 <br /> Dilution Factor 5 1 QC Limits ' <br /> /. Surrogate Recovery <br /> 4-Bromofluorobenzene 95 94 60_130 <br /> 1 <br /> Quality Assurance/Quality Control Data <br /> QC Sample ID- 9604-109-6824 <br /> LCS - QC Spike Spike Dup QC QC <br /> Compounds % Rec. Limits %Rec. %Rec. Limits RPD Limits <br /> Benzene 98 80-120 96 91 39-150 46 0-30 ' <br /> Toluene 100 80-120 99 94 46-148 52 0-30 <br /> Ethylbenzene 100 80-120 98 93 32-160 55 0-30 <br /> Gasohne 95 80-120 92 91 50-150 07 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Method Detection Limit(MDL)x Dilution Factor <br /> 1 <br />