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Sequoia 680 Chesapeake Drive Redwood City;CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical_ <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92t-0100 <br /> ........................................................... <br /> ....... ....— <br /> . ........... <br /> ... .....i...... lub <br /> ..... Client Project ID: Shell 1267 Coun ry C <br /> Blaine Tec ervices, Inc. <br /> 1680 Rogers Ave. Matrix: Liquid <br /> San Jose, CA 95112 <br /> ":Attention: Fran Thie Work Order#: 9802J20-01-07; 9802,121-01 Reported: Mar 20, 19 <br /> . .. . . . ... . . ..... <br /> XX� <br /> ........... <br /> ............ <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: MTBE <br /> GIC Batch#: MS030698MTBEF2A <br /> Analy. Method: EPA 8260 <br /> Prep. Method: N.A. <br /> Analyst: L.Zhu <br /> MS/MSD#: 9802J2303 <br /> Sample Cone.: N.D. <br /> Prepared Date: <br /> Analyzed Date: 3/6/98 <br /> Instrument I.D.#: F2 <br /> Cone. Spiked: 50 Mg/L <br /> Result: 50 <br /> MS % Recovery: 100 <br /> Dup. Result: 54 <br /> MSD% Recov.: 108 <br /> RPD: 7.7 <br /> RPD Limit: 0-25 <br /> ................ <br /> .............. <br /> ......... ... . ... <br /> .......... ........ <br /> .. ......... ....... .......................... <br /> .......... <br /> . .. ....... <br /> ........... <br /> .................. <br /> LCS#: LCS030698 <br /> Prepared Date: <br /> Analyzed Date: 3/6/98 <br /> Instrument I.D.#: F2 <br /> Cone. Spiked: 50 pg/L <br /> LCS Result: 53 <br /> LCS % Recov.: 106 <br /> MS/MSD 60-140 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known, matrix that is analyzed using the same reagents, <br /> SE I AN LYTICAL 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 /> jinterference,the LCS recovery is to be used to validate the batch. <br /> 899 ner <br /> of t Manager MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9802J20.BLA <4> <br />