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04/15/99 FRI 19:68 VAX 53U 515-LUG[ Layxu „iivoi <br /> %.d <br /> Sequoia 6B0 Chessptake Drive Redwood City.CA 94063 (6511)364-9600 FAX(650)364-9233 <br /> 4041+/.Nilget tare Walrxrt Geek CA94598 (925)989-96M FAX(425}498-9673 <br /> Analytical <br /> 819 Striker Avenue,Suite 9 SaCraenrnto,CA 958W (916)921-96110 FAIC(916}92t-0100 <br /> 1455)AcDowed Blud.North,Stet 0 Petaluma.CA 94956 (707)792-1 B65 FAX(707)792-0342 <br /> 1551 Industrial Mad San Carlos,CA 94670.4111 (6x0)232-9600 FAX(650)232-9612 <br /> ATG Associates, Inc. Client Project : AT&T Lodi 61059.01519 <br /> 1117 Lone Palm Avenue <br /> Modesto, CA 95351-1502 <br /> Attention: David Oliver CC Sample Gra p: 9903152-01-04 Reported: Mar 9, 1999 <br /> DUALITY CONTRO DATA REPORT <br /> I <br /> Matrix: Solid <br /> Method: EPA 601 BM <br /> Ansiyst: J.B0NNVILLE <br /> ANALYTE Diesel I <br /> QC Hatch Ar: GCO304990HBPEXC <br /> Sala No.: 9902036-1 <br /> Date Prepared: 8!1!99 <br /> Date Andyzarl: 312MS � <br /> tnetrurnent I,ID. : GCHP4A <br /> Sample Cann.,mg/Kg: 1.3 mg/Kg M j&MSD ARE REFFERED <br /> Conc.Spiked,mg/Kg: 17 FRDM GC0301990HBPEXC <br /> Matrix Spike,rr UIK 14 <br /> % Recovery: 75 <br /> Matrix <br /> Spike Qupllcala,mg1Kg: 15 <br /> % Recovery: 81 <br /> Rota&*% Difference: 7.7 � <br /> RPD Control Limits: 0-50 <br /> 1 <br /> LCS Batch#: BLK030499CS � <br /> Date Prepared: 314199 ' <br /> Data Analyzed: 314199 <br /> Instrumeflit I.D.#: GCHPSA !I <br /> I <br /> Cone.Spiced,mgift 17 <br /> Recovery,mg1Kg: 15 <br /> LCS % Recovery: 88 <br /> Percent Recovery Control Limits: <br /> MSIMSD 54150 <br /> LCs 60.140 <br /> Quality Assurance Statement: All standard operating procedures and luality control requremants have been mel, <br /> fleese Note: <br /> The LCS is a control sernpla of p arty ueterferent free matrix that is anmh-&W using the same reapenu. <br /> SECIU04A ANALYTICAL preperstiem and enalytieel methods played for eta tempkat. The matrix spike Is an aliquot or sample <br /> fortified with known quentities ors /tic compounds and subjected m the entire anslytical procedure_ If <br /> the recovery of enslytes from the m rix spike dose not Irp w%Nn specified control limits due to mattik <br /> Interference,the LCS recovery Is to tit used to%dilate the batch. <br /> /Cay X irnya' <br /> fact Ma er <br />