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peake <br /> City CA 9 <br /> (65 ) 364-9600 FAX(65 )364-9233 <br /> Sequoia 404 Nh Wig t La Drive Wal not Creek A 945983 (925)988-9600 FAX(920)988 9673 <br /> D819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> 4D- Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-41 1 l (650) 232-9600 FAX(650)232-9612 <br /> I� <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3/18/99 <br /> 9912 Business Park Drive, Ste 100 Project Number 7G600-019-04 Received 3/18/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 4/l/99 <br /> Total Metals by EPA 6000/7000 Series Methods/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, 9030325 Date Prepared. 3125199 Extraction Method. EPA 3050E <br /> Blank 20393Z5-ULK. <br /> Lead 3/26/99 ND mg/kg 2 50 <br /> LLC-S 9030325-13SI <br /> Lead 3/26/99 500 490 mg/kg 800-120 980 <br /> Matrix Spike 9030325-MSI S903255-01 <br /> Lead 3/26/99 500 ND 454 mg/kg 800-120 908 D <br /> Matrix Spike n 9030325-MSD1 S903255-01 <br /> Lead 3/26/99 500 ND 45 2 mg/kg 800-120 904 200 0 442 D <br /> Batch, 9030395 Date Prepared. 3126/99 Extraction Method. EPA 3050B <br /> 903039 BLK1 <br /> d 3/30199 ND mg/kg 250 <br /> LSU 9030395-BSI <br /> Lead 3130/99 500 50 1 mg/kg 800-120 100 <br /> Matrix Spike 9030395-MSI 5903255-01 <br /> Lead 3/30/99 Soo ND 45 8 mg/kg 800-120 91 6 D <br /> Matrix Spike Dun 9030395-MSDI 5903255-01 <br /> Lead 3130/99 500 ND 454 mg/kg 800-120 908 200 0 877 D <br /> Tl�uoia Analytical -Sacramento *Refer to end of t eport for text of notes and definitions <br /> RA?) <br /> Sandra R Hanson,Client Services Represen alive Page 8 of 1 1 <br />