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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9640 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> X111 Analytical a19 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> e. W `a ;— ,2aam' nn ' h ` n -U--2 <br /> �,RESNA Client Project ID F7132 <br /> 94, Quik Stop 132 }} <br /> "42501 Albrae Street Matrix Liquid {{ <br /> } <br /> Fremont, CA 94538s <br />' Attention Rich Gariow QC Sample Group 9409A04 -01-4 M x ` h. Reported Sep 27, 1994a <br /> .3 {-sNcs.�,�4'l`r;"'Svr�,�;}£a <br /> �;�ioV'.h 2 v�'�,,;�w r i�'AA,,}u}N.a ,,,z.,rr s .. {,,,,,°,.' x;r� r,<.fi,.w w. xf xc>zx�.ex.R�.�ww�,��'�.w>•z <br />' QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA$020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: J Minkel J Minkel J Minkel J Minkel <br /> %AS Iti11Cr1 <br /> Batch#: 940983401 940983401 940983401 940983401 <br />' Date Prepared - - - - <br /> Date Analyzed. 9/20/94 9/20/94 9/20/94 9/20/94 <br />' Instrument I D.#: GCHP-3 GCHP-3 GCHP-3 GCHP 3 <br /> Conc. Spiked 10Erg/L 10pg/L 10ug/L 30p9/L <br /> Matrix Spike <br /> % Recovery 100 100 100 100 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 100 110 103 <br /> Relative % <br /> Difference, 00 00 95 3 0 <br /> 465.,'v3vnYrvv4'yn} <br />' LCS Batch#. - - <br />' Date Prepared - - <br /> Date Analyzed- <br /> Instrument I D #: <br /> LCS% - - <br /> Recovery: <br />' % Recovery <br /> Control Limits: 71-133 72 128 72-130 71-120 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is anatyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> Vfortified with known quantities of specific compounds and subjected to the entire analytical procedure N <br /> v G V <br /> f l� A—Fuc ow "� the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> L[ �Y interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager sao9A0a RES <1 <br />