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680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Straker Avenue,Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916) 921 0100 <br /> Blaine Tech Services, Inc Client Project!D ' She!! Stockton%980112-1-12 <br /> ;1680 Rogers Ave Matrix Liquid <br /> v,San Jose, CA 95112 Reported Jan 30, 1998 <br /> Attention Fran Thie Work Order# 9801694-08 P <br /> tv <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#' GCO12798BTEXOIA GC012798BTEC0IA GC012798BTEX0IA GCO127988TEX01A GCO12798BTEX01A <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. C Demartini C Demartini C Demartint C Demartini C Demartini <br /> MS/MSD # 980188103 980188103 980188103 980188103 960188103 <br /> Sample Conc.- N D ND N D N DN D <br /> Prepared Date 1/27/98 1/27/98 1/27/98 1/27/98 1/27/98 <br /> Analyzed Date 1/27/98 1/27/98 1/27/98 1/27/98 1/27/98 <br /> Instrument LD #. GCHPI GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc. Spiked 10 Ng/L 10 ug/L 10 ug/L 30 ug/L 60 ug/L <br /> Result 9 4 9 4 98 30 59 <br /> MS % Recovery 94 94 98 100 98 <br /> is Dup. Result 10 10 10 31 63 <br /> MSD % Recov.- 100 100 100 103 105 <br /> RPD 62 62 20 33 66 <br /> RPD Limit. 0-25 0-25 0-25 0-25 0-25 <br /> LCS # BLK012798 BLK012798 BLK012798 BLK012798 BLK012798 <br /> Prepared Date 1/27/98 1/27/98 1/27/98 1/27/98 1/27/98 <br /> Analyzed Date- 1/27/98 1/27/98 1/27/98 1/27/98 1/27/98 <br /> Instrument I D # GCHP1 GCHP1 GCHPL GCHP10 8 - B0 9/L <br /> Conc Spiked long/L 10ftg/L 10u9/ <br /> LCS Result 12 12 12 38 78 <br /> LCS % Recov .. 120 120 120 127 130 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 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 ANALYTICAL 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 /> P e r <br /> Project Mana r **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9801694 BLA <5> <br />