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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916) 92 s 100 <br /> com <br /> www sequoialabs com <br /> Upgradient-Valley Springs Project J & L Market <br /> 336 Augusta Court Project Number N/A Reported <br /> Valley Springs CA 95252 Project Manager Vic Cherven 12/11/01 14 37 <br /> Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result LiMLt Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1110182 - EPA 3050E <br /> Blank(1110182-BLK1) _ _ Prepared 11/15/01 Analyzed 12/10/01 <br /> Lead ND 2 5 mg/kg <br /> LCS(1110182-BS1) _ _Prepared 11/15/01 Analyzed 12/10/01 <br /> Lead-- -- � �-�� -- 486 25 mg/kg 500 972 80-E20 <br /> Matrix Spike_(II10182-M.S1) _ Source S111246-04_ _Prepared 11/15/01 Analyzed 12/10/01 <br /> Lead 836 25 mg/kg 500 43 81 2 80-120 <br /> Matrix Spike Dup(1110182-MSDI) Source 5111246-04 _ Prepared 11/15/01 Analyzed 12/10/01 <br /> Lead - - - -- 91 0 25 mg/kg 500 43 960 80-120 848 20 <br /> is <br /> cola Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thos analytical report mast be reproclaced in its entwery <br /> Page 13 of 18 <br />