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Sequoia <br />� Analytical <br />819 Stnker Avenue 5utte 8 <br />Sacrwnmw, CA 95x34 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoiatabs com <br />SECOR international - Rancho Cordova Project Chevron 9-5775 Sampled 6/20/00 <br />3017 Kilgore Road Suite 100 Protect Number 077 41991 043 Received 6/21100 <br />Rancho Cordova, CA 95670 Pro em Man4ger David Evans Reported 6/23100 <br />Tbtal Met N Eby EPA 600017000 Series MethodslQualdy' Control <br />Sequoia Analytical- Sacramento, <br />Datc Spike Sample QC Reporting Limit Recov RPD RPD <br />Anal a Analyzed Level Result Result Units Rccov Limits % Lama % Nates* <br />Batch: 0060229 <br />Date PFepared 6/23100 <br />Extraction Methad, CPA 30508 <br />Blank <br />0060229-BLKI <br />Lead <br />6123/00 <br />ND <br />mg/kg 250 <br />LCS <br />0060229 -BSI <br />I-ead <br />6123/00 500 <br />495 <br />mg/kg 800-120 990 <br />Matrix Spike <br />0060229 -MSI S006269-01 <br />Lead <br />6/23/00 500 217 <br />766 <br />mg/kg 900-120 110 D <br />Matrix Spike bum <br />0060229-MSDI S006269-01 <br />Lead <br />6/23/00 500 217 <br />716 <br />mg/kg 800-120 998 200 9 72 D <br />oia Analytical - Sacramento *Refer, to end of report for rezr of now and definarow <br />Page 5 of 6 <br />612- d Dt s/ui0nOM WdZO 50 00. c2 wnf <br />