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Sequoia <br />• wo Analytical <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 92 1 -0100 <br />www sequoialabs com <br />Gettler-Ryan - Rancho Cordova <br />Project Chevron 9-5775, Lodi, CA <br />Sampled <br />4112/00 <br />3164 Gold Camp Dr, Ste 240 <br />Project Number 346408 10 <br />Received <br />4113/00 <br />Rancho Cordova, CA 95670 <br />Project Manager David Herzog <br />Reported <br />4114/00 <br />Total Metals by EPA 6000/7000 Series Methods/Quality Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC <br />Reporting Limit Recov <br />RPD RPD <br />Analyte <br />Analyzed Level Result Result Units <br />Recov Limits % <br />Limit % Nates* <br />Batch 0040123 <br />Date Prepared 4/14/00 Extraction Method EPA 3050E <br />Blank <br />0040123-BLK1 <br />Lead <br />4/14/00 ND mg/kg <br />250 <br />LCS <br />0040123 -BSI <br />Lead <br />4/14100 500 48 5 mg/kg <br />800-120 970 <br />Matrix Spike <br />0040123-MS1 S004142-09 <br />Lead <br />4114100 500 ND 39 5 mg/kg <br />800-120 790 <br />2,D <br />Matrix Spike Dup <br />0040123-MSDI S004142-09 <br />Lead <br />4/14/00 500 ND 41 7 mg/kg <br />800-120 83 4 <br />200 542 D <br />• <br />Analytical • Sacramento <br />*Refer to end of report for text of notes <br />Page 7of8 <br />