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1 <br /> Sequoia �+ 680 Chesapeake Drive Redwood City,CA 94� (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 9459 (510) 988.9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> ::::>: <br /> :> 971031 <br /> 9-1452.......... . .......... ........ <br /> :::.:...........................................................: <br /> :::::Blaine Tech Services, Inc. Client Project ID: Chevron / <br /> <`1680 Rogers Ave. Matrix: Liquid <br /> :[San Jose, CA 95112 <br /> ::::Attention: Fran Thie Work Order#: 9711094-01-04 Reported: Dec 1, 1997:;::; <br /> xx <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: 1,1-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> OC Batch#: MS1107978260F3A MS 1107978260173A MS1107978260F3A MS1107978260F3A MS1107978260F3A <br /> Analy. Method: EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Prep. Method: N.A. N.A. N.A. N.A. N.A. <br /> Analyst: M.Williams M.Williams M.Williams M.Williams M.Williams <br /> MS/MSD #: 971119301 971119301 971119301 971119301 971119301 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 11/7/97 11/7/97 11/7/97 11/7/97 11/7/97 <br /> Analyzed Date: 11/7/97 11/7/97 11/7/97 11/7/97 11/7/97 <br /> Instrument I.D.#: F3 F3 F3 F3 F3 <br /> Conc. Spiked: 50pg/L 50pg/L 50pg/L 50pg/L 50pg/L <br /> Result: 46 45 44 46 45 <br /> MS % Recovery: 92 90 88 92 90 <br /> Dup. Result: 44 48 45 46 47 <br /> MSD % Recov.: 88 96 90 92 94 <br /> RPD: 4.4 6.5 2.2 0.0 4.3 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS#: LCS110797 LCS110797 LCS 110797 LCS110797 LCS110797 <br /> Prepared Date: 11/7/97 11/7/97 11/7/97 11/7/97 11/7/97 <br /> Analyzed Date: 11/7/97 11/7/97 11/7/97 11/7/97 11/7/97 <br /> Instrument I.D.#: F3 F3 F3 F3 F3 <br /> Conc. Spiked: 50pg/L 50pg/L 50pg/L 50pg/L 50pg/L <br /> LCS Result: 54 49 47 49 49 <br /> LCS % Recov.: 108 98 94 98 98 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> sr <br /> xqu IA NALYTICAL 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 /> interference,the LCS recovery is to be used to validate the batch. <br /> e enner "*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Ject Manager 9711094.BLA <2> <br />