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404 N. Wlget Lane <br /> Sequoia Walnut Creels,CA 94598 <br /> (925)98$-960D <br /> FAX(925)988-9673 <br /> Analytical www,sequoialalis.com <br /> I San Joaquin Company Inc, Project: 7500 W 11th 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 15:06 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creels <br /> f Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OE02002-EPA 5030B [MeOH] <br /> Blank(OE02002-BLKI) Prepared&Analyzed:02-May-00 <br /> Purgeable Hydrocarbons ND 1.0 mg&g <br /> Benzene ND 0,0050 " <br /> Toluene ND 0.0050 " <br /> Ethylbenzene ND 0.0050 " <br /> Xylenes(total) ND 0.0050 " <br /> �urrogate:a,a,a-Triuorotoluene 0.628 0.600 105 40-140 <br /> LCS(OE02002-13SI) Prepared&Analyzed:02-May-00 <br /> ;. _Benzene 0.608 0,0050 mg/kg 0.800 76.6 50-150 <br /> Toluene 0.658 0.0050 6.800 82,2 50-150 <br /> Ethylbenzene 0.726 0.0050 0.800 90.8 50-150 <br /> -Xylenes(total) 2.36 0.0050 2.40 98.3 50-150 <br /> ale:a,a,a-Truoratoluene 0.658 0.600 110 40-140 <br /> Matrix Spike(OE02002-MSI) Source: W005046-02 Prepared&Analyzed:02-May-00 <br /> Benzene 0.822 0.0050 mg/kg 0.800 ND 103 50-150 <br /> �;...ioluene 0.888 0.0050 0.800 ND 111 50.150 <br /> Ethylbenzene 0.968 0.0050 0.800 ND 121 50-150 <br /> 'Xylenes(total) 2.83 0,0050 " 2.40 ND 118 50-150 <br /> 4 <br /> �._Wurrogate:a,a,a-Trlfluorololuene 0.690 " 0.600 115 40-140 <br /> Matrix Spike Dup (OE02002-MSD1) Source:W005046-02 Prepared&Analyzed:02-May-00 <br /> 0.814 0.0050 mg/kg 0.800 ND 102 50-150 0.978 20 <br /> >1Taluene 0.890 0.0050 " 0.800 ND 111 50-150 0.225 20 <br /> Ethylbenzene 0.978 0.0050 0.800 ND 122 50-150 1.03 20 <br /> r=.kylenes(total) 2.88 0.0050 2.40 ND 120 50-150 1.75 20 <br /> =--Arrogate:a,a,a-Trybuorotoluene 0,682 0,600 114 40-140 <br /> I <br /> I <br /> S fqlloia Analytical-Walnut Creek The results in this report apply to the smnples analyzed in accordance with the chain of <br /> custody document,This analytical report must be reproduced in its entirety. <br /> I <br /> Page 8 of 11 <br />