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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 1 (916)921-9600 <br /> FAX(916)921-0 100 <br /> Analytical -se<Iuolalabs.com <br /> SECOR International-Rancho Cordova Project: Chevron 9-2396,Acampo,CA <br /> 3017 Kilgore Road,Suite 100 Project Number: 077.43485.150 Reported: <br /> Rancho Cdrdova CA,95670 . Project-Manager: Roger Hoffmore 05/16/01 15:47 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike 'Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits' RPD Limit Notes <br /> Batch 1050075- LPA 5030B(MeOH) ' <br /> Blank(1050075-BLK1) Prepared&Analyzed:05/04/01 _ <br /> Purgeable Hydrocarbons ND 1.00 mg/kg <br /> Benzene ND 0.00500 " <br /> Toluene ND 0.00500 " <br /> Ethylbenzene ND 0.00500 " <br /> Xylenes(total) ND 0.00500 " <br /> Surrogate:a,a,a-Trjuorotoluene 0.205 0.200 102 60-140 <br /> LCS(1050075-BSI) Prepared&Analyzed:05/04/01 <br /> Benzene 0.207 0.00500 mg/kg. 0.200 103 70-130 <br /> Toluene 0.225 0.00500 " 0.200 112 70-130 <br /> Ethylbenzene 0.237 0.00500 1, 0.200 118 70-130 <br /> ' M's(total) 0.605 0.00500 0.600 101 70-130' <br /> Suu te:a,a,a-Trifuorotoluene 0.212 0.200 106 60-140 <br /> Matrix Spike(1050075-MS1) Source:S10501'l-02 Prepared&Analyzed_:05/04/01 <br /> Benzene 0.177 0.00500 mg/kg .0.200 ND 88.5 60-140 <br /> Toluene 0.I92 0.00500. " 0.200 ND 96.0 60-140 <br /> Ethylbenzene 0.206 0.00500 0.200 ND 103 60-140 <br /> Xylenes(total) 0.520 0.00500 0.600 ND 86.7 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 0.218 0.200 109 60-140 <br /> Matrix Spike Dup(1050075-MSD1) Source:5105017-02 Prepared:05/04/01 Analyzed:05/05/01 <br /> Benzene 0.183 0.00500 mg/kg 0.200 ND 91.5 60-140 3.33 25 <br /> Toluene 0.199 0.00500 0.200 ND 99.5 60-140 .3.58 25 <br /> Ethylbenzene 0.211 0.00500 0.200 ND 105 60-140 2,40 25 <br /> Xylenes(total) 0.535 0.00500 0.600 ND 89.2 60-140 2.84 25 <br /> Surrogate:a,a,a-Triuorotoluene 0.227 0.200 113 60-140 <br /> 1 _ <br /> oia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 7 of 13 <br />