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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> •eCD 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> q,10 Analytical 8 t 9 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Blaine Tech Services, Inc Client Project ID Shell,Tracy/960820-J3 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Fran Thie Work Order# 9608D08 -01-02, 05 Reported Sep 4, 1996 <br /> (QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#- GC0829WBTEX02A GC082996BTEX02A GCO82996BTEX02A GC082996BTEX02A <br /> Analy. Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 50.30 <br /> Analyst- D Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD#. 96o8C6206 960806206 9608C6206 9608C6206 <br /> Sample Conc . N D N D N D N D <br /> Prepared Date: 8/29/96 8/29/96 8/29/96 8/29/96 <br /> Analyzed Date 8/29/96 8/29/96 8/29/96 8/29/96 <br /> Instrument I D #. GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked: 10ug/L 10ug/L 10ug/L 30pg/L <br /> Result: 93 89 88 27 <br /> MS %Recovery- 93 89 88 90 <br /> Dup. Result. 93 90 91 27 <br /> MSD % Recov .. 93 90 91 90 <br /> RPD- 00 11 34 00 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS#. BLK082996 BLK082996 BLK082996 BLK082996 <br /> Prepared Date. 8/29/96 8/29/96 8/29/96 8/29/96 <br /> Analyzed Date 8/29/96 8/29/96 8/29/96 8/29/96 <br /> Instrument I.D.#. GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked: 10Frg/L 10ug/L 10ug/L 30ug/L <br /> LCS Result 91 87 86 26 <br /> LCS % Recov. 91 87 86 S7 <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 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 /> UO 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 /> 7Poj)egy enner <br /> ect Manager �'MS=Matrix Spike,MSD=MS Duplicate RPD=Relative% Difference 9608D08 BLA <1> <br />