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,..� 819 Stoker Avenue, 951 <br /> Suite 8 <br /> Sequoia Sacramento,CA <br /> (916)921-9600-9600 <br /> 15) <br /> fAX(916)921-0100 <br /> Analytical w .sequolalabs.com <br /> Upgradient-Valley Springs Project: La Finca Partnership# 1 Sampled: 9/15/00 <br /> 336 Augusta Court Project Number: N/A Received: 9/15/00 <br /> Valley Springs,CA 95252 Project Mama er: San Joa uin EHD Reported: 9/29/00 <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 /> IAnalyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 0090238 Date Prepared: 9/21/00 Extraction Method: EPA 3050B <br /> Blank 0090238-BLKI <br /> Lead 9/22/00 ND mg/kg 2.50 <br /> LCS 0090238-BSI <br /> Lead 9/22/00 50.0 52.7 mg/kg 80.0-120 105 <br /> Matrix Spike 0090238-MS1 S009226-01 <br /> Lead 9/22/00 50.0 10.5 57.9 mg/kg 80.0-120 94.8 D <br /> Matrix Spike Duo 0090238-MSDI 5009226-01 <br /> Lead 9/22/00 50.0 10.5 52.6 mg/kg 80.0-120 84.2 20.0 11.8 D <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 6 of 8 <br />