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Sequoia <br />819 Striker Avenue5wte 8 <br />Sacramento C 95834 <br />1 <br />(916) 922 1-9600 <br />6/20100 <br />FAX (916) 921 -0 100 <br />-:1) -Analytical <br />www sequotalabs com _0 <br />Received <br />SECOR international - Rancho Cordova <br />Project <br />Chevron 9-5775 <br />Sampled <br />6/20100 <br />3017 Kilgore Road, Suite 100 <br />Project Number <br />077 41991 043 <br />Received <br />6121/00 <br />Rancho Cordova, CA 95670 <br />Project Manager <br />David Evans <br />Reported <br />6/23100 <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 0060229 <br />Date Prepared 6123/00 <br />Extraction Method EPA 3050B <br />Blank <br />0060229-BLK 1 <br />Lead <br />6123100 <br />ND <br />mg/kg 250 <br />LCS <br />0060229 -BSI <br />Lead <br />6/23/00 500 <br />495 <br />mg/kg 800-120 990 <br />Matrix Spike <br />0060229 -MSI S006269-01 <br />Lead <br />6123100 500 21 7 <br />766 <br />mg/kg 800-120 110 D <br />Matrix Spike Dup <br />0060229-MSDI S006269-01 <br />Lead <br />6/23/00 500 21 7 <br />71 6 <br />mg/kg 800-120 998 200 9 72 D <br />Sequoia Analytical - Sacramento *Refer to end of report for text of notes and <br />• <br />Page 5 of 6 <br />