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404 N.W1getLane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical www.sequolalabs.com <br /> sail Joaquin Company Inc. Project: 7500 W l lth St.Steet Tracy <br /> 1120 Hollywood Ave,No.3 Project Number: #9902.012 Reported: <br /> Oakland CA,,94602 Project Manager: Dai Watkins 24-May-00 15:19 <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 Level Result %REC Limits RPD Limit Notes <br /> Batch OR03002-EPA 5030B [MCOH] <br /> Blank(OR03002-BLK1) Prepared&Analyzed:03-May-00 <br /> ` Purgeable Hydrocarbons ND 20 mg/kg <br /> Benzene ND 10 " <br /> I <br /> Toluene ND 10 " <br /> -'Ethylbenzene ND 10 " <br /> Xylenes(total) ND 10 " <br /> 1-.I—rogale:aa,a-Trifluwntoluene 0.682 0.600 114 70-130 <br /> LCS(OE03002-BSI) Prepared&Analyzed:03-May-00 <br /> Benzene 0.778 0.10 mg/kg 0.800 97,2 70-130 <br /> -toluene 0.802 0.10 0.900 100 70-130 <br /> Ethylbenzene 0.834 0.10 0.800 104 70-130 <br /> Nylenes(total) 2.46, 0.10 2.40 102 70-130 <br /> a,a,a-Tri luorotolueue 0.652 " 0.600 109 70-130 <br /> Matrix Spike(OE03002-MSI) Source:W004628-11 Prepared&Analyzed:03-May-00 <br /> /Benzene 0.916 0.10 mgtkg 0.800 ND 102 70-130 <br /> rloluene 0.854 0.10 0.800 ND 107 70-130 <br /> Ethylbenzene 0.880 0.10 0.800 ND 110 70-I30 <br /> –Xylenes(total) 2.60 0.10 2.40 ND 108 70-134 <br /> I <br /> Surrogate:a,a,a-DIfluorololuene 0.578 0.600 96.3 70-130 <br /> Matrix Spike Dup (OE03002-MSD1) Source:W004628-11 Prepared&.Analyzed; 03-May-00 <br /> i <peazene 0.844 0.10 mg/kg 0.800 ND 105 70-130 3.37 20 <br /> JToluene 0.882 0.10 0.800 ND 110 70-130 3.23 20 <br /> Ethylbenzene 0.906 0.10 0.800 ND 113 70-130 2.91 20 <br /> i Ylenes(total) 2.64 0.10 2.40 ND 110 70-130 1.53 20 <br /> j' 11tS'urrogate:a,aa-Tryluorotoluene 0.606 0.600 101 70-130 <br /> i <br /> i I <br /> S Nuoia Analytical -Walnut Creek The results in this repol apply to the swnples analyzed in accordance with the chain of <br /> custody docurdent.This analytical report must be reproduced in its entirely. <br /> 1 <br /> I <br /> I <br /> Page 11 of 14 <br />