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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (659) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> fillyAnalytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 1 <br /> Blaine'Tech Services, Inc Client Project ID - Shed Stockton /980112-H2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order#N 9801695`10 Reported Jan 30, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. 1,1-Dichloro- Trichloro- Chloro- <br /> ethene ethene Benzene <br /> GC Batch# GCO11698801009A GC011698801009A GCO116981301009A <br /> Analy. Method EPA 8010 EPA 8010 EPA 8010 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 <br /> Analyst L Kim L.Kim L Kim <br /> MS/MSD #• 980156401 980156401 980156401 <br /> Sample Conc , N D N D N D <br /> Prepared Date: 1/16/98 1/16/98 1/16/98 <br /> Analyzed Date 1/16/98 1/16/98 1/16/98 <br /> Instrument I D #' GCHP9 GCHP9 GCHP9 <br /> Conc Spikes! 25 fig/L 25 Ng/L 25 Mg/L <br /> Result. 26 24 25 <br /> MS %Recovery 104 96 100 <br /> • Dup Result 25 23 24 <br /> MSD %Recov : 100 92 96 <br /> RPD. 39 43 41 <br /> RPD Limit 0-25 0-25 0-25 <br /> LCS #- BLK011698 BLK011698 BLK011698 <br /> Prepared Date 1/16/98 1/16/98 1/16/98 <br /> Analyzed Date. 1/16/98 1/16/98 1/16/98 <br /> Instrument l D # GCHP9 GCHP9 GCHP9 <br /> Conc Spiked: 25 pg/L 25 fig/L 25 fig/L <br /> LCS Result. 24 23 24 <br /> LCS % Recov 96 92 96 <br /> 60-140 60-140 60-140 <br /> LCS 65-135 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 IA NAL1fT1CAL 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 fail within specified control limas due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> e g enner **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> lect Manager <br /> 9601694 SLA e9> <br />