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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> Analytical <br /> FAX(707) 792-0342 <br /> :RI Project Unocal/Tosco Sampled 4/9/99 <br /> 73 D,gital Dr Suite 6 Protect Number Tosco SS#5886/205503 T8 Received 4/14/99 <br /> oval,,CA 94949 Project Manager Glenn Mattuecet Reported 5124/99 <br /> Total Metals by EPA 6000/7000 Series Methods/Quality Control <br /> Sequoia Analytical_Petaluma <br /> Date Spike Sample QC Reporting Litwt Recov RPD RPD <br /> Analyte Anal ed Level Result Result Units Recov Limits % Unut % Notes <br /> Batch 9040488 Date Prepared 4/22/99 Extraction Method EPA 3050B <br /> %lank 9040488-BLK1 <br /> Lead 4/26/99 ND mg/kg 750 <br /> CS 9040488-BSI <br /> Lead 4/26/99 500 474 mg/kg 800-120 94 8 <br /> atn�x S wke 9040488-MS1 P904450-01 <br /> Read 4126199 446 205 548 mg/kg 750-125 769 <br /> atnx 5 ike Dup 9040488-MSD1 P904450-01 <br /> lead 4/26/99 472 205 59 1 mg/kg 750-125 818 200 618 <br /> t <br /> Poia Analytical-Petaluma •Refer to end of report for text of notes and definitions <br /> 1 Page 5 of 6 <br />