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819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> FAX(916)921-0 100 <br /> - ,5)- Analytical www secluoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Unocal 0187, Stockton,CA Sampled 5/10/00 <br /> 3164 Gold Camp Dr,Ste 240 Project Number N/A Received 5111100 <br /> Rancho Cordova,CA 95670 Project Manager David Herzog Reported 5124/00 <br /> Total Metals by EPA 6000/7000 Series Methods/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Ip'k0 <br /> Sample QC Reporting L�mtt Recov RPD RPD <br /> �nal}te Analyzed Level esult Result Units Recov Limas % Limit % Notes* <br /> Batch 0050189 pate Prepared 5/16/00 Extraction Method EPA 3050B <br /> Blank 0050189-BLKI <br /> Lead 5117/00 IND mg/kg 250 - <br /> LCS 0050189-BS] <br /> Lead 5/17/00 500 486 mg/kg 800-120 972 <br /> Matrix Snake 0050I89-MSI S005223-0I <br /> Lead 5/17/00 500 ND 46 1 mg/kg 800-120 922 <br /> D <br /> Matrix Spike Dup 0050189-MSDI 5005223-0I <br /> Lead 5/17/00 500 ND 447 mg/kg 80 0-120 89 4 20 0 3 08 D <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definrt:ons <br /> Page 5 of 6 <br />