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Sequoia <br />D <br />Chesapeake Drive <br />� N. Wiget Lane <br />Redwood City, 8 <br />Walnut Creek, CAA 944598 <br />(650) 364-9600 <br />(925) 988-9600 <br />4 <br />FAX (650) 369233 <br />FAX (925) 988-9673 <br />270 Perkins Street <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />Analytical <br />1455 McDowell Blvd. North, Ste. D <br />Petaluma, CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />qwr <br />1551 Industrial Road <br />San Carlos. CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />Cambria Environmental <br />Project: <br />Equilon, 1313 E. Charter Way, Stockton, CA <br />Sampled: <br />4/29/99 <br />270 Perkins Street <br />Project Number: <br />N/A <br />Received: <br />4/29/99 <br />Sonoma, CA 95476 <br />Project Manager: <br />Aubrey Cool <br />Reported: <br />5/6/99 <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 />tnalyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes <br />Batch: 9050035 <br />Blank <br />Lead <br />Date Prepared: <br />9050038-111 <br />5/6/99 <br />5/4/99 <br />KI <br />ND <br />Extraction <br />mg/kg <br />Method: EPA 30506 <br />2.50 <br />UCS <br />9050038 -BSI <br />Lead <br />5/6/99 <br />50.0 47.6 <br />mg/kg <br />80.0-120 95.2 <br />Matrix Spike <br />Lead <br />9050038 -MSI <br />5/6/99 <br />S905011-01 <br />50.0 33.1 82.0 <br />mg/kg <br />80.0-120 97.8 D <br />Matrix Spike Duo <br />Lead <br />9050038-MSDI <br />5/6/99 <br />S905011-01 <br />50.0 33.1 71.5 <br />mg/kg <br />80.0-120 76.8 20.0 24.1 5,6,D <br />Sequoia Analytical - Sacramento *Refer to end of report for text of notes and definitions. <br />7z� /Z-�� <br />Sandra R. Hanson, Client Services Representative Page 7 of 8 <br />