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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX (510) 686 9689 <br /> ItEo Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> .ry hC�y�}��yGy j}ri i rc n�n.� r)-..J^R{ A$`�' 5vvv.uGS <br /> VRE�iYA wwrti roa ,fi.4'oY, ' � z,. ':w.Y�w,�.,;wwf«c,r.-a <br /> A N9 0roject ID 07120 94, d 1`�c Stop 120 n <br /> ~,42541 Albrae Street Matrix Liquid is <br /> Fremont, CA 94538 <br /> sAttention Rich Garlow QC Sample Group 4FD8202-04 Reported Jul 1, 19943 <br />' QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel <br />' Method. EPA 6015 Mod <br /> Analyst: M Cassidy <br /> MS/MSD <br />' Batch#: 41798902 <br /> Date Prepared. 6/22/94 <br /> Date Analyzed: 6/24/94 <br /> Instrument I D.#: GCHP-5 <br /> Conc. Spiked: 600/jg/L <br /> Matrix Spike <br /> % Recovery: 76 <br /> Matrix Spike <br />' Duplicate% <br /> Recovery: 56 <br /> Relative % <br /> Difference 31 <br /> 4ti�J 4"� <br /> w2k'I a`w�'winoa000 w„w`.:,:w.4'wiL°...:,°.�.ria::tt•w.w:'R$SwE:�„f <br /> M1 ♦ �.�S,A t�.w 410.aYA 4x\+L444vY.S4r 4 fir• �h xr <br /> LCS Batch#: BLK052294 <br /> Date Prepared 6/22/94 <br /> Date Analyzed• 6/24/94 <br /> Instrument 1.1) # GCHP-5 <br /> LCS % <br /> Recovery 70 <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 /> wn-cac"k- <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 4FD8201 RES <4> <br />