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Al <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 19W Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX (510) 686 9689 <br /> Analytical 919 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> RESNA Client Project ID 150047 01, Ekholm Property <br /> 1710 Main Street Matrix Liquid <br /> Escalon, CA 95320 h <br /> Attention John Lane QC Sample Group 9409078 -01-4 Reported Sep4 15, 1994, <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel <br /> Method EPA 8015 <br /> Anal St. 8 All <br /> MS/MSD <br /> Batch# 940901503 <br /> Date Prepared- 9/7/94 <br /> Date Analyzed: 9/12/94 <br /> Instrument I D.#: N/A <br /> Conc.Spiked: 600ug/L <br /> Matrix Spike `+ <br /> % Recovery. 42 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 38 <br /> Relative% <br /> Difference: 10 <br /> ry yr}4A'r w wv +r rvvvrsr}�, v tr w ' v A Jv r w } HSS L4 J.`wz- + r+.Y.frnt rvvv} ,. 4 J'^vJ:lnvJa�i'' viay <br /> LCS Batch#: <br /> Date Prepared: - <br /> Date Analyzed. - <br /> Instrument I D #: - <br /> LCS % <br /> Recovery: - <br /> %Recovery <br /> Control Limits: 28-122 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL 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 /> Vickie Tague Clark <br /> Project Manager <br /> 9409078 WA7 <I> <br />