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Sequoia 404 N.,CA Ease <br /> Walnut Creek,CA 94598 <br /> y� (9z5)988-9600 <br /> + <br /> Analytical <br /> FAX(925)988-9673 <br /> wvwv.sequaialabs,corn <br />-". xvy F.Weston-Walnut Creek Project: San Joaquin PISA <br /> 1575 Treat Blvd,Ste 212 Project Number: - Reported: <br /> Walnut Creek CA,94596 Project Manager: Jessica Levine 26-Oct-01 15:50 l <br /> I <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical- Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Leve! Result %REC Limits RPD Limit Notes <br /> k <br /> Batch 1J12002-EPA 5030B P/T <br /> Blank(1J12002-ELKI) Prepared&Analyzed: 12-Oct-01 <br />:1 Purgeable Hydrocarbons(C6-C12) ND 50 uglt <br />_ Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Surrogate:qqa-Triuorotoluene 30.9 30.0 103 70-130 <br /> LCS(IJ12002-BSI) Prepared&Analyzed: 12-Oct-01 <br /> Benzene ---- --- - -- -17.3 0.50 ug/l 20.0 86.5 70-130 - <br /> Toluene 18.4 0.50 20.0 92.0 70-130 <br /> Ethylbenzene 19.2 0.50 20.0 96.0 70-130 <br /> Xylenes(total) 57.6 0.50 60.0 96.0 70-130 <br /> gate:a,a,a-Triuorotoluene ------ - - -30.1 -�--- --- --- "----- 30.0 _ 100 70-130 -- ------- <br /> Source:W170223-02 Prepared&Analyzed: 12-Oct-01 <br /> IGeatrix Spike(1J12002-MSI) <br /> Benzene 16.5 0.50 ug/i 20.0 ND 82,5 70-130 <br /> Toluene 17.8 0.50 20.0 ND 89.0 70-130 <br /> Ethylbenzene 18.6 0.50 20.0 ND 93.0 70-130 <br /> Xylenes(total) 55.7 0.50 60.0 ND 92.8 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 29.7 30.0 99.0 70-130 <br /> Matrix Spike Dup(1312002-MSD1) Source:W110223-02 Prepared&Analyzed: 12-Oct-01 <br />- Benzene -_-� 16.9 0.50 ug/1 20.0 ND 84.5 70-130 2.40 20 <br /> Toluene 17.8 0.50 20.0 ND 89.0 70-130 0.00 20 <br /> Ethylbenzene 18.4 0.50 20.0 ND 92.0 70-130 1.08 20 <br /> Xylenes(total) 55.1 0.50 60.0 ND 91.8 70-130 1.08 20 <br /> Surrogale:a,a,a-Triuorololuene 30.2 30.0 101 70-130 <br /> d <br /> r <br /> 8 <br /> Sequoia Analytical-Walnut Creek 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 4 of 5 <br /> I <br /> I <br />