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680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N,Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)92f-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> '..'..Blaine Tech Services, Inc. <br /> Client Project 10: <br /> Shell 1267 Country Club <br /> 1680 Rogers Ave. Matrix: Liquid <br /> Jose, CA 95112 <br /> Attention: Fran Thle 1� <br /> Work Order 9808957 02 <br /> ....... .. <br /> -03, 05-06 Reported: Sep 9, 1998 <br /> 9808961 07 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: MTBE <br /> OC Batch#: M8082498MT8EH6B <br /> Analy. Method: EPA 8260 <br /> Prep. Method: <br /> Analyst: S.Goldstein <br /> MS/MSD#: 980892806 <br /> Sample Cone.: 5.8 <br /> Prepared Date: 8/25/98 <br /> Analyzed Date: 8/25/98 <br /> Instrument I.D.#: HS <br /> Conc. Spiked: 50,ug/L J <br /> Result: 46 <br /> MS % Recovery: 80 <br /> Dup. Result: 43 <br /> MSD % Recov.: 74 <br /> RPD: 6.7 <br /> RPD Limit: 0-25 <br /> ............. ................ ..................... <br /> ..... .... <br /> M..0',:`.�:- <br /> .. -: <br /> ......... ............ <br /> Y,-:X <br /> . ......................... <br /> . ............................ ............................................ <br /> .... ............................................................... ........................ ........... ....... <br /> LCS#: LCS082598 <br /> Prepared Date: 8/25/98 <br /> Analyzed Date: 8/25/98 <br /> Instrument I.D.#'. HIS <br /> Cone. Spiked: 50jig/L <br /> LCS Result: 49 <br /> LCS % Recov.: 98 <br /> MS/MSD <br /> 60-140 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> U I NALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure, If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> Pe Penner <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9868957.BLA <.3> <br />