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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wi8et Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> � - Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> x Environ �m' N, h W Client Project ID~ $6el16131 Pacific,Stockton'x r A <br /> #1270 Perkins Ave Matrix Solid }' <br /> ,Sonoma, CA 95476 <br /> -°Attention J Gaarder Work Order# 9709C09-07-03 Reported Oct 6, 1997r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Methanol Ethanol Iso-Propanol <br /> QC Batch#: GCO929971SHSHSA GCO929971SHSHSA GCo929971SHSHSA <br /> Analy. Method: ISHS ISHS ISHS <br /> Prep. Method Hs HS HS <br /> Analyst: T Tran T Tran T Tran <br /> MS/MSD#: 970900903 9709CO903 970900903 <br /> Sample Conc. N D N D N D <br /> Prepared Date: 9/29/97 9/29/97 9/29/97 <br /> Analyzed Date: 9/29/97 9/29/97 9/29/97 <br /> Instrument I.D.#: GCV1 GCV1 GCV1 <br /> Conc Spiked: 8 0 mg/Kg 8 0 mg/Kg 8 0 mg/Kg <br /> Result. 10 11 11 <br /> MS % Recovery: 125 138 138 <br /> 0 Dup. Result: 11 11 11 <br /> MSD % Recov.: 138 138 138 <br /> RPD: 95 00 00 <br /> RPD Limit. 0-40 0-40 0-40 <br /> LCS #: ELK093097 BLK093097 BLK093097 <br /> Prepared Date 9/30/97 9/30/97 9/30/97 <br /> Analyzed Date: 9/30/97 9/30/97 9/30/97 <br /> Instrument LD #: GCV1 GCV1 GCV1 <br /> Conc Spiked: 8 0 mg/Kg 8 0 mg/Kg 8 0 mg/Kg <br /> LCS Result: 74 80 79 <br /> LCS % Recov.: a 93 100 99 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> ALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> QUO" preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> e <br /> Interference,the LCS recovery Is to be used to validate the batch <br /> gory <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative% Difference 970SC09 EEE <3> <br />