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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wfget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Anal tical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> ', - Y 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates,Inc. Project: SUSDICo oration Yard <br /> rp Sampled: 2/23199 to 2/24199 <br /> 1117 Lone Palm Ave.,Suite B Project Number: na Received: 3/l/99 <br /> Modesto,CA 95351 Project Manager: Tom Lutterman Reported: 3/15/99 <br /> 1 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> LCS 9030195-BSI <br /> Benzene 319199 200 <br /> 192 ug/kg 96.0 <br /> Toluene 1. 200 190 95.0 <br /> Ethylbenzene " 200 189 " 94.5 <br /> Xylenes(total) 600 570 95.0 <br /> Surrogate: a,a,a-Trifluorotoluene or 300 327 109 <br /> Matrix Spike 9030195-MSI P903097-17 <br /> I Benzene 3/9199 200 ND 178 ug/kg 89,0 <br /> Toluene 200 ND 176 88.0 <br /> Ethylbenzene 200 ND 176 88.0 <br /> . Xylenes(total) 600 ND 530 88,3 <br /> Surrogate: a,a,a-Trifluorotoluene 11300 316 It105 <br /> trix Spike Dun 9030195-MSD1 P903097-17 <br /> 1 <br /> nzene 3/9/99 200 ND 173 ug/kg 86.5 2.85 <br /> Toluene 11 200 ND 172 86.0 2.30 <br /> Ethylbenzene 200 ND 172 86.0 2.30 <br /> Xylenes(total) 600 ND 518 86.3 2.29 _ <br /> Surrogate: a,a,a-Trifluorotoluene 300 314 105 <br /> � t <br /> i <br /> I <br /> i <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions. <br /> l Page l 8 of 28 <br /> i <br />