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404 N.Wlget Lane <br /> Sequoia Walnut Creek,(92598 94598 <br /> -9600 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> www.sequoialabs.com <br /> wwsenuoialabs.com <br /> 3 <br /> r; <br /> 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 14:51 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical --Walnut Creek <br /> Reporting Spike Source AREC RPD <br /> ,':-.Analyte' Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> 13atch OE01.003-EPA 5030B [P/T] <br /> Matrix Spike Dup (OE01003-MSD1) Source: W004568-16 Prepared&Analyzed:01-May-00 <br /> Benzene 20.0 0.50 ugll 20.0 ND 100 70-130 2.47 20 <br /> Toluene 20.3 0.50 20.0 ND 101 70-130 1.95 20 <br /> tbylbenzene 20,9 0.50 20.0 ND 104 70-130 0,480 20 <br /> amylenes(total) 60.2 0.50 " 60.0 ND 100 70-130 0.333 20 <br /> ;.:_surrogate:a,a,a-Trifluarololuene 28.4 " 30.0 94.7 70-130 <br /> =Bitch OE02002-EPA 5030B [MeOH] <br /> Blank(OE02002-BLKI) Prepared&Analyzed:02-May-00 <br /> i'urgeable Hydrocarbons ND 1,0 mg/kg <br /> Benzene ND 0.0050 <br /> Toluene ND 0.0050 " <br /> ' :tbenzene ND 0.0050 " <br /> (total) ND 0.0050 " <br /> Surrogate:a,a,a-D5 fluorololuene 0.628 0.600 105 40.140 <br /> F:C C5(OE02(102-BSI) Prepared&Analyzed: 02-May-00 <br /> "tenzene 0.608 0.0050 mglkg 0.800 76.0 50-150 <br /> Toluene 0.658 0.0050 0.800 82.2 50-150 <br /> 31hylbenzene 0,726 0.0050 0.800 90.8 50-150 <br /> --xylenes(total) 2.36 0,0050 2.40 98.3 50-150 <br /> .Surrogate:a,a,a-Triuorololuene 0.658 0.600 110 40-140 <br /> Aatrix 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 /> Toluene 0.888 0,0050 0.800 ND 111 50-150 <br /> ,.._.�tlrylbenzene 0.968 0.0050 0.800 ND' 121 50-150 <br /> I'-�'ylenes(total) 2.83 0.0050 2.40 AID 118 50-150 <br /> zir rogate:a,a,a-7)-Yluorotoluene 0.690 " 0.600 115 40-140 <br /> i <br /> --Se[1ll0ia Analytical-Walnut CIeek The results in this report apply to the samples aualyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Page 24 of 28 <br /> i <br />