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Sequoia 680 Ch4rke Drive Redwood City,CA 940630)364-9600 FAX(650)364-9133 <br /> 404 N.Wiser lane Walnut Creek.CA 94598 925)988-9600 FAX(925)988-9673 <br /> —ZA l 7 819 Striker Avenue,Suite 8 Sacramento,CA 95834" (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Technical Services,Inc. Project: Equilon Enterprises Sampled: 1/28/99 <br /> 1680 Rogers Ave. Project Number: 305 S.Hutchins,Lodi/990128-1I Received: 2/2/99 <br /> San Jose,CA 95112 Project Manager: Fran Thie Reported: 2/12/99 <br /> Total Petroleum Hydrocarbons as Diesel&others by EPA 8015M/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 /> Batch: 9020165 Date Prepared: 2/6/99 Extraction Method: EPA 3520B <br /> Blank 9020165-BLKI <br /> Diesel 2/10/99 ND mg/I 0.0500 <br /> Surrogate: o-Terphenyl 0.100 0.0869 86.9 <br /> LCS 9020165-BSI <br /> Diesel 2/10/99 1.00 0.825 mg/I 28.0-138 82.5 <br /> Surrogate: o-Terphenyl " 0.100 0.112 112 <br /> LCS Duo 9020165-BSDI <br /> Diesel 2/10/99 1.00 0.852 mg/I 28.0-138 85.2 3.22 <br /> Surrogate: o-Terphenyl 0.100 0.101 101 <br /> • <br /> Sequoia Analytical-Petaluma *Refer to end ofreport for text ofnotes and definitions. • <br /> Page 9 of 14 <br />