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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 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 Client Project ID Chevron 9-6171/981223-1-2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Christine Lillie Work Order# 9812F88-01, 02 Reported Jan 14, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Mickel <br /> QC Batch# ME122998601OMDB ME122998601OMDB ME122998601OMDB ME122998601OMDB <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst R Dave R Dave R Dave R Dave <br /> MS/MSD # 9812G1604 981261604 9812G1604 9812131604 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 12/29/98 12/29/98 12/29/98 12/29/98 <br /> Analyzed Date 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJAS <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 10 10 10 10 <br /> MS % Recovery 100 100 100 100 <br /> Dup. Result 1 0 1 0 10 098 <br /> MSD % Recov 100 100 100 98 <br /> RPD 00 00 00 20 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS# LCS122998 LCS122998 LCS122998 LC3122998 <br /> Prepared Date 12/29/98 12/29/98 12/29/98 12/29/98 <br /> Analyzed Date. 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result: 098 10 10 10 <br /> LCS % Recov 98 100 100 100 <br /> 80-120 80-120 80-120 80-120 <br /> LCS 80-120 80-120 80-120 80-120 <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 />!SEQUOIYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> Is 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 fail within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Pr *"'MS=Matrix Spike, MSO=MS Duplicate, RPD=Relative%Difference 9812F88 BLA <2> <br />