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• SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> ryp.w • .� w� `RESNA~Industiies}"' " 7 r� r "Client Project ICS 123009 01/Teic` hert <br /> 3164 Gold Camp Dr, Suite 200 Matrix Water <br /> Rancho Cordova, CA 95670 <br /> Attention Claudio Avila QC Sample Group 4010468-471 Reported Jan 26, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTEthyl- <br /> Benzene Toluene Benzene Xylenes <br /> • <br /> Method: EPA 602 EPA 602 EPA 602 EPA 602 <br /> Analyst: Chiaravalloti Chiaravalioti Chiaravallob Chiaravalloti <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> • LCS Batch#' LCS012494 LCS012494 LCS012494 LCS012494 <br /> Date Prepared: 1/24/94 1/24/94 1/24/94 1/24/94 <br /> Date Analyzed: 1/24/94 1/24/94 1/24/94 1/24/94 <br /> Instrument LD#: HP-2 HP-2 HP-2 HP-2 <br /> �. % <br /> Recovery: 144 103 103 102 <br /> Control Limits, 80-120 80-120 80-120 80.120 <br /> MS/MSD <br /> Batch#• 4010709 4010709 4010709 4010709 <br /> Date Prepared: 1/24/94 1/24/94 1/24/94 1/24/94 <br /> Date Analyzed: 1/24/94 1/24/94 1/24/94 1/24/94 <br /> instrument I.D.#. HP-2 HP-2 HP-2 HP-2 <br /> Matmc Spike <br /> %Recovery' 110 110 110 110 <br /> Matrix Spike <br /> Duplicate% <br /> I� Recovery: 110 110 110 110 <br /> Relative% <br /> Difference 0 0 00 00 00 <br /> SEQUOIA ANALYTICAL Please Note <br /> !1� ,I The LCS is a control sample of known,interferent hes matrix that is analyzed using the same reagents, <br /> 7 preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> Cvalidation of sample batch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> Linda C. Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> . 4010468 RES <2> <br />