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Sequoia 680 Chesapeake Drive Redwood City;CA 94063*.ot415) 364.9600 FAX(415)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (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 /> ............. .......... .......... ........... <br /> M: <br /> .......... <br /> Blaine Tech8eiviceS, 1 ne. Client Project ID: Chevron 9-1918/970310-J1 <br /> 1680 Rogers Avenue Matrix: Liquid <br /> -San Jose, CA 95112 <br /> '.Attention: Fran Thie Work Order# 9703494-01 Reported: Mar 17, 1997" <br /> 0 <br /> QUALITY CONTROL DATA REPORT <br /> Analyt—e7- 71-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> GC Batch#: mSo312978260F3A MS0312978260F3A MS0312978260F3A MS0312978260F3A MS0312978260F3A <br /> Analy. Method: EPA 8260 EPA 8240 EPA 8240 EPA 8240 EPA 8240 <br /> Prep. Method: NA NA NA NA NA <br /> Analyst: M.Williams M.Williams M.Williams M.Williams M.Williams <br /> MS/MSD#: 970349401 970349401 970349401 970349401 970349401 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 3/12/97 3/12/97 3/12/97 3/12/97 3/12/97 <br /> Analyzed Date: 3/12/97 3/12/97 3/12/97 3/12/97 3/12/97 <br /> Instrument I.D.#: F3 F3 F3 F3 F3 <br /> Conc. Spiked: 50pg/L 50,ugIL 50 pg/L 50 lig/L 50yg/L <br /> Result: 57 51 54 52 51 <br /> MS%Recovery: 114 102 108 104 102 <br /> Dup. Result: 49 47 51 49 49 <br /> MSD % Recov.: 98 94 102 98 98 <br /> RPD: 15 8.2 5.7 5.9 4.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> ..........I........ .............. ............ ............ <br /> ........................... ........... .. <br /> ........... <br /> ........... .......... ................ ........ <br /> X -N.X':' XX XX ....................I...'.,.,.,..".I..,.,.,.,.............. <br /> .................. .. .............. <br /> ....................... <br /> LCS#: BLK031297 BLK031297 BLK031297 BLK031297 BLK031297 <br /> Prepared Date: 3/12/97 3/12/97 3/12/97 3/12/97 3/12/97 <br /> Analyzed Date: 3/12/97 3/12/97 3/12/97 3/12/97 3/12/97 <br /> Instrument I.D.#: F3 F3 F3 F3 F3 <br /> Conc. Spiked: 50 pg/L 50 pg/L 50pg/L 50pg/L 50 pg/L <br /> LCS Result: 51 49 51 51 50 <br /> LCS%Recov.: 102 98 102 102 100 <br /> M5/MSD 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 /> U JA 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 /> P enner MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> tProject Manager YT'C 9703494.BLA <3> <br /> 611 <br />