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Sequoiai80 Chesapeake Drive Redwood City,CA 9406" (650) 364.9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (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 /> Kleinfelder-Stockton Project: N/A Sampled: 6/1/98 <br /> 2825 East Myrtle Street Project Number: 20-3712-08.E01 Received: 6/2/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 6/17/98 <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 /> Batch: 8060116 Date Prepared: 6/9/98 Extraction Method: EPA 5030B(PIT) <br /> Blank 8060116-BLKI <br /> Purgeable Hydrocarbons 6/9/98 ND ug/I 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> .Surrogate.- a,a,a-Trifluorotoltiene 10.0 9.82 60.0-140 98.2 <br /> L CS 8060116-BSI <br /> Benzene 6/9/98 10.0 10.7 ug/I 70.0-130 107 <br /> Toluene 10.0 10.1 70.0-130 101 <br /> Ethylbenzene 10.0 9.89 70.0-130 98.9 <br /> Xylenes(total) 30.0 29.5 70.0-130 98.3 <br /> Surrogate. a,a,a-Trifluorotoluene 10.0 10.1 60.0-140 101 <br /> Matrix Spike 8060116-MSI S806051-13 <br /> Benzene 6/9/98 10.0 ND 9.96 ug/l 60.0-140 99.6 <br /> Toluene 10.0 ND 9.44 60.0-140 94.4 <br /> Ethylbenzene 10.0 ND 9.22 60.0-140 92.2 <br /> Xylenes(total) 30.0 ND 27.7 60.0-140 92.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 11.6 60.0-140 116 <br /> Matrix Spike Duo 8060116-MSD1 S806051-13 <br /> Benzene 6/9/98 10.0 ND 10.4 ug/l 60.0-140 104 25.0 4.32 <br /> Toluene 10.0 ND 9.86 60.0-140 98.6 25.0 4.35 <br /> Ethylbenzene 10.0 ND 9.49 60.0-140 94.9 25.0 2.89 <br /> Xylenes(total) 30.0 ND 28.6 60.0-140 95.3 25.0 3.20 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.64 60.0-140 86.4 <br /> Batch: 8060172 Date Prepared: 6/12/98 Extraction Method: EPA 5030B(MeOH) <br /> Blank 8060172-BLKI <br /> Purgeable Hydrocarbons 6/12/98 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 0.204 60.0-140 102 <br /> L CS 8060172-BSI <br /> Benzene 6/12/98 0.200 0.183 mg/kg 70.0-130 91.5 <br /> Toluene 0.200 0.182 70.0-130 91.0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> /4inaSchnee er,Laboratory Director Page 7 of 12 <br /> I <br />