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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> Bates Avenue Suite L Concord,CA 94520 (5t0) 686-9600 FAX(510)686-9689 <br /> B 19 Sinker Avenue Suite 8 Sacramento CA 95834 (91 b) 921-9600 FAX(916)921 0100 <br /> Analytical 1900 <br /> `R>:SNA <br /> 'Client Project ID 054006 02, Coca-ColaStocktonr <br /> x 1710 Main Street Matra Liquid ; <br /> Escalon, CA 95320 } <br /> ' ~Attention Jeanne Homsey OC Sample Group 9409538-01 V Reported Sep 29, 1994,x <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: N Zahedt N Zahedi N Zahedl N Zahedt <br /> MS/MSD <br /> Batch#' 4090323 4090323 4090323 4090323 <br /> ' Date Prepared. 9/19/94 9/19/94 9/19/94 9/19/94 <br /> Date Analyzed: 9/19/94 9/19/94 9/19/94 9/19/94 <br /> Instrument 1 D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Conc Spiked: laug/L 10pg/L 10}ig/L 3oli9/t- <br /> Matrix Spike <br /> % Recovery: 100 99 100 99 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery: 92 92 91 91 <br /> Relative% <br /> ' Difference: 8 3 7 3 94 84 <br /> } r f..c•�c,.,xr�4 r,.f :.>c.h,,�}.� }���v ,4,. -,�i-;max w ;r n^z V rr� z���hr.rz <br /> ' LCS Batch#- LCS091994 LCSW1994 LCS091994 LCS091994 <br /> ' Date Prepared: 9/19/94 9/19/94 9/19/94 9/19/94 <br /> Date Analyzed: 9/19/94 9/19/94 9/19/94 9/19/94 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> ' LCS % <br /> Recovery: 100 99 102 100 <br /> ' % Recovery <br /> Control Limits- 71-133 72-128 72-130 71-120 <br /> ' Please Note <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> ELAP #2004 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 I! <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 94o9s38 wAT t2> <br />