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680 Chesapeake Drive Redwood City.CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N.Wlget lane Walnut Greek CA 94598 (92S)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue.Suite 8 Sacramento.CA 95834 f 916)9Z1-9600 FAX(916)9Z1-oloo <br /> Analytical 1455 McDowell Blvd. North.Ste D Petaluma,CA 94954 (707)79Z-1865 FAX(707)79Z-0342 <br /> r I�I <br /> Blaine Tech Services, Inc. Client Project ID Chevron 9-0557/981108-Tl <br /> 1680 Rogers Ave. Matrix: Liquid <br /> San Jose, CA 95112 <br /> Attention: Christine Lillie Work Order #: 9811694 -01-03 Reported: Dec 2. 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyi Xylenes <br /> Benzene <br /> QC Batch#: 8110245 8110245 8110245 8110245 <br /> Analy. Method: EPA 8015M/8020M EPA 8015M/8020M EPA 8015M/8020M EPA 8015M/80201M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: - - - <br /> MS/MSD #: P811138-a1 P811136-01 P811138-01 P81 1138-01 <br /> Sample Conc.: N.D N-D N.D N.D <br /> Prepared Date: 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Analyzed Date: 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Instrument I.D.#: - - - <br /> Conc. Spiked: 100ug/L 100ug/L 100ug/L 300 Ng/L <br /> Result: 98.1 96 96.9 298 <br /> MS % Recovery: 98.1 96 96.9 99.3 <br /> Dup. Result: 95 92 7 93 8 289 <br /> iiMSD % Recov.: 95 92 7 938 963 <br /> RPD: 3.21 35 3.25 3.07 <br /> RPD Limit: 0-5 0-6 0-4 0-5 <br /> LCS #: LCS 111698 LCS111698 LCS111698 LCS111698 <br /> Prepared Date: 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Analyzed Date: 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Instrument I.D.#: - - <br /> Canc. Spilled: looftg/L 100 ug/L 100yg/L 300 ug/L <br /> LCS Result: 104 101 100 307 <br /> LCS % Recov.: 104 101 100 102 <br /> 82-119 80-117 66-125 73-119 <br /> LCS 84-116 81-117 79-115 80-114 <br /> Control Limits <br /> Please Note: <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents. <br /> Elap #2 45 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 /> gory <br /> ct Manager '*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative o Difference 9811694.SLA <1> <br />