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' a- ) Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX (415) 364-9233 <br /> 404 N.\y/191tn <br /> iget Lae Walnut Creek,CA 94598 (510) 988.9600 FAX (510) 988.9673 <br /> wrAnalytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX (916) 921.4100 <br /> Blaine Tech Services, Inc. Client Project ID: Chevron 9-0557/951116-Z3 <br /> 985 Timothy Drive Matrix: Liquid <br /> San Jose, CA 95133 <br /> Attention: Jim Keller Work Order #: 9511D05 -01 Reported: Nov 29, 1995. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC112095BTEY20A GCI12095BTEX20A GC112095BTEX20A GC112095BTEX20A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J.Woo J.Woo J.Woo J.Woo <br /> MS/MSD #: 951143326 951143326 951143325 951143326 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 11/20/95 11/20/95 11/20/95 11/20/95 <br /> Analyzed Date: 11/20/95 11/20/95 11/20/95 11/20/95 <br /> Instrument I.D.#: GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked: long/L 10pg/L 10ug/L 30pg/L <br /> Result: 11 10 10 31 <br /> MS % Recovery: 110 100 100 103 <br /> Dup. Result: 10 10 10 30 <br /> MSD % Recov.: 100 100 100 100 <br /> RPD: 9.5 0.0 0.0 3.3 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> LCS #: BLK112095 BLK112095 BLK112095 BLK112095 <br /> Prepared Date: 11/20/95 11/20/95 11/20/95 11/20/95 <br /> Analyzed Date: 11/20/95 11/20/95 11/20/95 11/20/95 <br /> Instrument I.D.#: GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked: 10pg/L lopg/L 10pg/L 30pg/L <br /> LCS Result: 11 10 10 30 <br /> LCS % Recov.: 110 100 100 100 <br /> MS MSD <br /> LCS 71-133 72.128 72-130 71.120 <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 /> SE I ALYTICAL 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 rnairix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> SF <br /> Penner <br /> r0ject Manager MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 95111)05.BLA <1> <br />