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Sequoia 680 Chesapeake Drive Redwood City,CA 9406" (650) 364.9600 FAX(650)364.9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 9459. (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> �,,,,F <br /> Kleinfelder-Stockton Project: N/A Sampled: 6/5/98 <br /> 2825 East Myrtle Street Project Number: 20-3712-08 Received: 6/9/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 6/23/98 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> LCS(con tin ued) 8060229-BS] <br /> Ethylbenzene 6/18/98 0.200 0.204 mg/kg 70.0-130 102 <br /> Xylenes(total) 0.600 0.603 70.0-130 100 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.199 60.0-140 99.5 <br /> Matrix Spike 8060229-MS1 S806102-00 <br /> Benzene 6/18/98 0.200 ND 0.221 mg/kg 60.0-140 110 <br /> Toluene 0.200 ND 0.214 60.0-140 107 <br /> Ethylbenzene 0.200 ND 0.209 60.0-140 105 <br /> Xylenes(total) 0.600 ND 0.618 60.0-140 103 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.186 60.0-140 93.0 <br /> Matrix Spike Dup 8060229-MSD1 S806102-00 <br /> Benzene 6/18/98 0.200 ND 0.227 mg/kg 60.0-140 113 25.0 2.69 <br /> Toluene 0.200 ND 0.220 60.0-140 110 25.0 2.76 <br /> Ethylbenzene 0.200 ND 0.214 60.0-140 107 25.0 1.89 <br /> Xylenes(total) 0.600 ND 0.634 60.0-140 106 25.0 2.87 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.189 60.0-140 94.5 <br /> Batch: 8060237 Date Prepared: 6/15/98 Extraction Method: EPA 5030B(MeOHI <br /> Blank 8060237-BLKI <br /> Purgeable Hydrocarbons 6/15/98 ND mg/kg 1.00 <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-Trifluorotoluene 0.200 0.202 60.0-140 101 <br /> LLS 8060237-BSI <br /> Benzene 6/15/98 0.200 0.182 mg/kg 70.0-130 91.0 <br /> Toluene 0.200 0.185 70.0-130 92.5 <br /> Ethylbenzene 0.200 0.199 70.0-130 99.5 <br /> Xylenes(total) 0.600 0.595 70.0-130 99.2 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.204 60.0-140 102 <br /> Matrix Spike 8060237-MS1 S806076-00 <br /> Benzene 6/15/98 0.200 ND 0.147 mg/kg 60.0-140 73.5 <br /> Toluene 0.200 ND 0.164 60.0-140 82.0 <br /> Ethylbenzene 0.200 ND 0.173 60.0-140 86.5 <br /> Xylenes(total) 0.600 ND 0.529 60.0-140 88.2 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.205 60.0-140 102 <br /> Sequoia Apalytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> / lnda C.Schneider,Laboratoryirector Page 8 of 13 <br />