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SIERRA LABORATORIES INC <br /> GHH Engineering, Inc. Date Sampled: 1017197 <br /> 8084 Old Auburn Road Date Received: I0/9/97 <br /> Citrus Heights, CA 95610 Date Prepared 10/10/97 <br /> Date Analyzed 10/10/97 <br /> Sierra Project Na.: 97I0-087 Analyst: SM <br /> Client Project ID: 5059-8/USA#b5 Lodi <br /> Sample Matrix; Soil Report Date: ###### <br /> EPA METHOD 8020-BTEX/EPA METHOD 8015-Gasoline Range Hydrocarbons (C4-C12) <br /> (Purge &Trap) <br /> Concentration, mg/kg <br /> Method <br /> Client Client Sample No.: 1-EXC 2-EXC 3-EXC 4-EXC 5-EXC 6-F-XC 7-EXC &EXC 9-EXC 10 EXC Detection <br /> Limit, <br /> Sierra Sample No,: 17764 17765 17766 17767 17768 17771 17772 17773 17769 17770 mg/kg <br /> COMPOUNDS: <br /> Benzene 6.1 2.7 15* ND 0.10 0.0084 ND ND ND 0.060 0.003 <br /> Toluene il 85 49 150 29 0.70 0.020 1.3 0.40 ND 0.80_ 0.003 <br /> Ethylbenzene i; 66 37 100 29 0.40 0.012 1.6 ND ND 0.75 0.003 <br /> Total Xylenes 430 250 750 220 2.5 0.090 11 0,75 0.0036 4.4 0.003 <br /> 1. MTBE ND ND 23* ND 1.9 0.56 ND ND 0.075 1.8 0.005 <br /> Gasoline 4500 2800 8400 2500 85 2.9 220 22 0.10 130 0.05 <br /> 1000* <br /> Dilution Factor 1000 500 10000 1000 50 1 50 50 1 50 QC Limits <br /> % Surrogate Recovery: <br /> a,a,a-Tritluorotoluene 120 120 120 120 100 120 110 100 100 1 110 35-135 <br /> i <br /> Quality Assurance/Quality Control Data <br /> QC Sample ID: 9710-94-BL <br /> LCS Spike Spike Dup QC QC <br /> F Compounds % Rec. %Rec. %Rec. Limits RPD Limits <br /> Benzene 105 80 75 39-150 3.2 0-30 <br /> 4 <br /> Toluene 102 78 81 46-148 4.1 0-30 <br /> Ethylbenzene 102 80 81 L�50-150 <br /> -160 1.6 0-30 <br /> Gasoline 105 100 116 15 0-30 <br /> ND means Not Detected <br /> Repotting Limit(RL) =Method Detection Limit(MDL)x Dilution Factor <br />