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680 Chmpeake Drive Wmpood City,CA (415) 364.9600 FAX(415) 364.9293 <br /> 41) Sequoia 11114.Whet Lane Walnut Geek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> low Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95894 (916) 921.9600 FAX(916)921.0100 <br /> "a k.i°'JS`/f` !' "^" ,/�.4 +;i<::k". \\• ::SSP,\\ '!},• y: k e%////1// <br /> "kii?�f`�:rf.?}:.,+.::}:ii'::e{;�i�:.::::.r•:•..�r:f�/ff��yJ�':,�+,;.�..v+,ti�r���+\^S:�• ���r "�/�'},}{ 'Geo <br /> S� Liient fro ect �U OLAL,'Geo- <br /> Sao trategles Inc. <br /> 3164 Gold Camp Dr., Suite 240 Matrix: Soil <br /> Rancho Cordova, CA 95670 <br /> Attention: Greg Gurss OC Sample Group: 7050335-0336 Reported: May 21, 1997;;, <br /> ;::.. .... ...................... ..:.:::.::.:.�:� :::::::::•rv•n:•:..::. •.r,.:,,.r:v.v r Nµ.x r.:'.:::. t'{.x�.4\}}:}}y:;{, s+rfr:'f.'n:::v}:.}v:;;::::r:r �\ <br /> .:::a:;�{...: :�::•:::::::�::.�s.vr..,......,. rr. �ti.....,.n�..: .. ,: .,:.:...! f. ,.. :....Y.,../: .:,.. :....{:.��.:/�„\\\�•'{{:':;\'ti;i:i`;.�.::. \ <br /> ..� ... ... :..., .,. ...,..., _....,. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium Chromium Lead Nlckel Zinc O&G <br /> Method: EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 5520 EF <br /> Analyst: K.Marchand K.Marchand K. Marchand K.Marchand K.Marchand LM/SP <br /> Concentration <br /> Spiked: 50 mg/kg 50 mg/kg 50 mg/kg 50 mg/kg 50 mg/kg 500 mg/kg <br /> LCS Batch#: LCS051997 LCS051997 LCS051997 LCS051997 LCS051997 LCS051997 <br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Instrument I.D.#: ICP-1 ICP-1 1CP-1 ICP-1 ICP-1 BAL-4 <br /> LCS % <br /> Recovery: 96 96 98 98 95 86 <br /> `I Control Limits: 60-120 80-120 80-120 80-120 80-120 70-130 <br /> ..:.�:.:.:..:...�.:..:.�::.�::.............gin,.::.:. / <br /> i::...�......... ,n...................r::t:.......v..n...,.,..nJn+....].............. <br /> MS/MSD <br /> Batch#: 7050356 7050356 7030356 7050356 7050356 7050334 <br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Instrument I.D.#: ECP-1 ICP-1 ICP-1 ICP-1 ICP-1 BAL-4 <br /> Matrix Spike <br /> % Recovery: 78 76 47 84 92 71 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 75 66 51 69 192 73 <br /> Relative % <br /> Difference: 3.9 14 8.2 20 70 2.8 <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 LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the QC limits for MS/MS13's are advisory only <br /> s <br /> PWA A� � and are not used to accept or reject batch results. <br /> M Edana M. Fruciano <br /> Project Manager/Sacramento Laboratory <br /> 7050335.GSI <19> <br /> T <br />