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.g•- z -�,,. � ..�.. �� _ �� .—�tr �, .�,� is �{' - _"3•x. :� <br /> _ <br /> 7 <br /> rw - <br /> ?�. <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City,CA 94063 <br /> (415)364-9600 - rAX(415)364-9233 <br /> 1Al + ®r fx"sm-uCtni/"i <br /> atetW;4rk <br /> 171+J MaG-1 Olent�Project ID:WO388,Reeves 6ocon <br /> Street <br /> Escalon,CA 9S32o <br /> A�tentICm G Stahl <br /> Reported:,lai <br /> . 112 <br /> QUALITY CONTROL DATA REPORT . <br /> A�'A�Yi7= Ehyl- <br /> "" Benzene Toluene benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA.8020 EPA 8020 <br /> Analyst: A MSraitab A Mrattab A fvtiraltab A Kimft2o ` <br /> Aeporing Units: uq/i 14r/L <br /> t. <br /> Date Analyzed: Jan 5, 1392 y9/� un/L <br /> .Sart 5. 1992 Jan 5, 19G2 Jan 5. 1992 <br /> .M QC Sample.: GBLK4105c,-, GBLKDIOS92 GBL Int+rA92 G3LK 000592 <br /> r `ri <br /> Sample Cone.: N.D. N.C. N.D. N.D. <br /> Spike Cone. <br /> Added: ?0 <br /> 10 10 40 <br /> t <br /> Cone.Matrix <br /> Spike: 10 10 10 31 <br /> Matrix Spike - <br /> Recovery: 100 1 100 <br /> 103 <br /> Cone.Matrix <br /> Spike <br /> Dup.: 10 f1 11 32 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 110 110 107 <br /> Relative <br /> %Difference: OA 9.5 9.5 3.2 <br /> SEQUOIA ANALYTICAL x!'•cave <br /> �" Gonc.of M.S.•Conc,of Sample X70 <br /> Spike Cone.Added <br /> t III[�elative 76 OiNerence: Cone,of M.S.•Cone.of M.S.D. x;r+p . <br /> a a eeM.S.f Con:.of WS.P.) 2 <br /> ,.: P oject Manager L� <br /> 1124773.WAr c6> <br />