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SIERRA LASORATORiEs INC <br /> The Park Corporation, Date Sampled 5130197 <br /> 8084 Old Auburn Road,Suite E Date Received 6/4/97 <br /> Citrus Heights, CA 95610 Date Prepared- 6/6/97 <br /> Date Analyzed 6/6/97 <br /> Sierra Project No . 9706-049 Analyst: SM <br /> Client Project ID- 5023-JI/Diamond Lumber Manteca <br /> Sample Matrix- Water Report Date. 6110/97 <br /> EPA METHOD 8020-BTEX/ <br /> ' EPA METHOD 8015 MODIFIED-GASOLINE RANGE HYDROCARBONS (C4-C12) <br /> (PURGE AND TR-s,P) <br /> Concentration, ug/1 <br /> ' Method <br /> Client Sample No : MW-8 MW-7 Detection <br /> Limit, <br /> ' Sierra Sample No • 8525 8526 EiQ <br /> COMPOUNDS: <br /> Benzene ND ND 05 <br /> Toluene ND ND 05 <br /> Ethylbenzene ND ND 05 <br /> Total Xylenes ND ND 05 <br /> MTBE ND ND 50 <br /> Gasoline Range N-D N-D 50 <br /> Dilution Factor 1 1 QC Limits <br /> % Surrogate Recovery <br /> 4-Bromofluorobenzene 88 88 70-125 <br /> ' Quality Assurance/Quality Control Data <br /> QC Sample ID 9706-049-$526 <br /> LCS QC Spike Spike Dup. QC QC <br /> Compounds % Rec Limits % Rec % Rec Limits RPD Limits <br /> Benzene 93 80-120 82 76 39-150 67 0-30 <br /> ' Toluene 95 80-120 89 81 46-148 10 0-30 <br /> Ethylbenzene 96 80-120 89 86 32-160 43 0-30 <br /> Gasoline 88 80-120 98 1I9 50-150 20 0-30 <br /> ND means Not De*ected <br /> Reporting Limit(RL.)=Method Detection Lzm:t(NIDL)Y Dilution Factor <br /> r <br /> I <br />