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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 %00 FAX(415) 364-9233 <br /> Analytical 1900 Bates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 619 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9,600 FAX(916)921-0t 00 <br /> ,RESNA <br /> Cheat Project ID W0309 01 Gardner Property n ;3 <br /> 1710 Main Street Matrix Liquid <br /> r Escalon, CA 95320 r� <br /> Attention John Lane u OC Sample Group 4CJ8501, 4-5 Reported Air 8, 1994; <br /> Yf v ryrivd Y{u ry. rill nryx n3 ryS�S... rY rrvi <br /> r•n rvrr n } ]xr vry ,4 ~ Frrvv 9.ih v}F Y'. v.�nr vx .vrr.lr 4{ a iwvw rxm mvvnv.r+nx vsivrvrry n�xvn x+rF%rvw •x+6x}1a.v.•}uxx ' <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- J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD <br /> Batch#: 4DO8702 4008702 4008702 4D08702 <br /> Date Prepared: - - - - <br /> Date Analyzed: 4/6/94 4/6/94 4/6/94 4/6/94 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP-3 GCHP-3 <br /> Conc Spiked: long/L 10ug/L long/L 30yg/L <br /> Matrix Spike <br /> % Recovery: 100 110 110 107 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: as 86 92 90 <br /> Relative% <br /> Difference: is 25 18 17 <br /> ,• ,• M1J ?i+ S.a l Vtre+o-; H y��}iC']($-^ Yf4\r to nKti w wki t n } � v ti it i' $v of +{Ey.C7 sy}f. ,�iC.vOYn+.�s f i �a <br /> +twt v�v. rwx nrr k�rrry rrvw r.rr ry .v...vr.m v.xv.J.rw.v...xr.wen vry r. S.v^*S rf�A rry♦vn n " >>{Yry .E� rtt x r '] r vrt xv yr tt r v vv my rv`}4tr�*i����`3'rry vv '.0 JnAr, <br /> LCS Batch#: - - - - <br /> Date Prepared: - - - - <br /> Date Analyzed: - - - <br /> Instrument LD #. - - - - <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 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 /> JU��'�Ynl 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 4CJa5o1 WAT e2> <br />