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y QCT 21 '97 03:41PM SMITH/ATC ASSOCIATES P.7 <br /> Sequoia — Chccapgekr Drivc Rrdwood City,CA 94063 (414-9600' FAX(415)364.9239 <br /> 190o Dater Avcrtuc,Waite L Concord,CA 94530 (3io) 486.9600' FAX(510)686%89 <br /> . 819 Striker Avenur,Saar B Sacramento,CA 95834 (916) ,931.9600 FAX(916)921-viva <br /> Anaytica ; . <br /> ' - t r£`:` rht��F� "°�s n^f <br />` }r 7- '.<M.l++f.' b<« Ste.=S."'.`c::"iy r <br /> 1 �rit� t'L`t� 50076.01, ropeny <br /> � rot <br /> 1710,Main Stfll?Ot Matrix: Sand <br /> �Y <br /> .1 Escelon.CA 95320 M: <br /> Miifi on Tom Luiterman• OC Sample Group: 4DA4501 Reported Apr 30, 1994 <br /> w � niFsste`{ y�h ;r .Yi«�a4: � >oC`?r.rcc��F <br /> 3 s � rcmWie " •2? ' ;+,?fid :�' r��,� <br /> QUALITY CONTROLDATA REPORT <br /> A Bsnaene Toluene Ethyl Xylenes <br /> Benzene <br /> Mothod: EPA SM. EPA SM EPA BOZO EPA 8020 - <br /> Arid C.•COnohue C,'Donohue. C,Donohue C.Ourmhue I " <br /> 4{3®4408 4094408 4094408 0944x8 <br /> Date Prep iced:. . 4/20/94 a/aa/sa 4/20/94 4/20/94 <br /> Clue Art�llyf :. 4/za/s4 4/2D/94 4l20/94 0/20194 <br /> Inetrr�rl�srrt 1.D.#:• GCf�P1ti GCHP18 GCHP18 GCHP78 <br /> Cdinc'spike& .0-OD mg/kg 0-xo mq/kg -0.20 mg/kg O.ao+r9/k9 <br /> . . matrix"13plke. ,• . <br /> rK f�ai' y: 100 105 105 103 <br /> . ..: Ma#r�c.Splka • <br /> D 1pllcate% <br /> f�pQQlferl/: 100 105 105 103 <br /> . .Relative 9ft . <br /> Dilftertrlce: 0.0 0.0 a,o 0.0 <br /> ••' R�'a-s'e �E',G§-t`Z R"r' ,,�, - <br /> ��, ry. <br /> xi : ft <br /> <..r,?�Jiyrac� i kk <br /> �. � :. . <br /> Date!Prepared- - <br /> In6lrt3rfrerlll;D:11t: - - - - <br /> LCS% <br /> Recavery: - • . <br /> Recovery <br /> Control Limits; 55445 47.149 47ASS 58-140 <br /> ease Not6: - - - <br /> The LGS is a control sample of known,interfeisnt tree malft that is analysed using the same reagents, <br /> $EDl�Cllk°ANALYTICAL preparation,and analytical meftods arnployod for the sampieis. The matriil spike is an Wi not of sample. <br /> } torKod wlth known quanlitles of specific compounds and subjectdd'to the entrs-anslytiral provedum.f 0 <br /> (''f�' ',; � the recovery of analytes trop+the Matrix spike does not fall within epuriTied control limits due to inalrlli' <br /> interference,the LOS recovery iota be used to riklid"the batch.• <br /> Vlckle Tadue.Clark <br /> 'Projdd Manager ' 41DA4501-wAT.•x4, <br />