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a , , nape"e Or": Cay G1 94f (650) 364 9600 FL'C(650) 364 9233 <br /> ■ , t. Sequoia u.. 1418et Luse Walnut Creek.CA 9451. (925)9as.%oo FAX(925)988-%73 <br /> Analytical Salkcr Avenue Suite 8 savamenco CA 95834 (916)921 96M FAX(916)921-0too <br /> f455 McDowell Blvd Nord%Ste D PeKaluma,CA 94954 (707)792 1865 FAX(707) 792-0342 <br /> ettler Ryan/Geostrategies --Client Project 1D 5886/18137 85, 2701f W March <br /> F47 Sierra Court, Ste J Matrix Vquid <br /> Lublin, CA 94568 <br /> 'Attention Deanna Harding Work Order# 9812344 11-12 Reported Dec 22, 1998r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> OC Batch# MSi20MMTBEH6A <br /> Analy. Method EPA 8260 <br /> Prep Method <br /> Analyst L Quong <br /> MS/MSD # 98123.4202 <br /> Sample Conc 110 <br /> Prepared Date 12/8/98 <br /> Analyzed Date 12/8/98 <br /> Instrument I D.#. H6 <br /> Conc Spiked 50ug/L <br /> Result 160 <br /> MS % Recovery 100 <br /> Dup Result 160 <br /> MSD %Recov • 100 <br /> RPD 00 <br /> RPD Limit. 0-25 <br /> LCS # LCS 120898 <br /> Prepared Date 12/8/98 <br /> Analyzed Date 12/8/96 <br /> Instrument I D # H6 <br /> Conc Spiked snug/L <br /> LCS Result 43 <br /> LCS % Recov 86 <br /> 60-140 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS Is a control sample of knc ern,Interferent-free matrix that is anal fed using the Sarre reagents, <br /> QI ANALYTICAL preparatlon,and analyti ai methods employed for the samples The matrix spike Is an aliquot of sample <br /> fortlfled with known quantilles of speer is compounds and subjected to the entire analytical procedure if <br /> the recovery of analytes from the mat,-ix spike does not fall within specifed control limits due to matrix <br /> T ranicher interference,the LCS recovery 1s to be used to validate the batch <br /> Pro ct Manager "'MS-klatrix Spike MSD-MS Duplica+e RPO-Relative %Diffe,en,:e 981c342 G, r <br /> r� <br />