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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 (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-L2 <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 Diesel <br /> QC Batch# 8120684 <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3520B <br /> Analyst <br /> LCS/LCSD# P812392 <br /> Sample Conc N D <br /> Prepared Date 12/30/98 <br /> Analyzed Date 1/4/99 <br /> Instrument I D # <br /> Conc Spiked 1 0 mg/L <br /> Result 0778 <br /> LCS % Recovery 778 <br /> Dup Result 0 701 <br /> LCSD % Recov 701 <br /> RPD 104 <br /> RPD Limit 0-35 <br /> LCS 28-138 <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#2245 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 analyticaf 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 /> WPrt <br /> r *x MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9812F88 BLA <1> <br />