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> Chesapeake Drive Redwood City,CA 5' (650}364-9600 FAX(650) 364-9233', <br /> r Sequoia x`404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100' <br /> Analytical 145McDowell Blvd. North.Ste,D Petaluma.CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> 1551 <br /> Industrial Road San Carlos,CA 94070-411 1 (650)232-9600 FAX(650) 232-9612 <br /> Cambria Environmental Project: Equilon, 1313 E.Charter Way, Stockton,CA , Sampled: 4/29/99 <br /> 270 Perkins Street Project Number: N/A Received: 4129199 <br /> Sonoma,CA 95476 Project Manager: Aubrey Cool Reported: 516199 <br /> Total Metals by EPA 6000/7000 Series Methods'Quality Control <br /> Sequoia Analytical-Sacramento--- <br /> Date <br /> acramento—_.-__Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Ratch: 9050038 Date Prepared: 5!4199 Extraction Method: EPA 30506 <br /> Blank 9050038-BLKI <br /> Lead 516199 ND mg/kg 2.50 � <br /> LCS <br /> 9050038-BSI <br /> Lead 516199 50.0 47.6 mg/kg 80.0-120 95.2 <br /> Matrix Spik- 9li50038-;,LU 5905011-01 <br /> Lead 5/6/99 50.0 33.1 82.0 mg/kg 80.0-120 97.8 D <br /> Matrix Spike])up 9050038-MSDI S905011-01 <br /> Lead 516199 50.0 33.1 71.5 mg/kg 80.0-120 76.8 20.0 24.1 5.6,D <br /> Sequoia Analytical-Sacramento *Refer to end of report for test of notes and definitions. <br /> r1c� -� rz <br /> Sandra R. Hanson;Client Services Representative Page 7 of 8 <br />