Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> i 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Sir"-Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> iE A Engineering Science &Tech Client Project ID Exxon 7-3942, 5153942 1300 <br /> 3468 Mt Diablo Blvd , Ste B-100 Matrix Liquid <br /> Lafayette, CA 94549 <br /> Attention Christa Marting Work Order# 9803305 04-06, 08 Reported Apr 3, 1998 <br /> 4 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GC031798STEX03A GCO31798BTEX03A GC031798BTEX03A GCO317986TEX03A GC031798STEX03A <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 DeMartinl C DeMartini C DeMartini C DeMartini C DeMartini <br /> MS/MSD# 980330611 980330611 980330611 980330611 980330611 <br /> Sample Conc N D ND N D N D ND <br /> Prepared Date 3/17/98 3/17/98 3/17/98 3/17/98 3/17/98 <br /> Analyzed Date 3/17/98 3/17/98 3/17/98 3/17/98 3/17/98 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked 10 fig/L 10 ug/L 10 ug/L 30 ug/L 60 ug/L <br /> Result 89 87 89 27 59 <br /> MS % Recovery 89 87 89 90 98 <br /> Dup Result 86 86 87 26 58 <br /> MSD % Recov 86 86 87 87 97 <br /> RPD 34 12 23 38 17 <br /> RPD Limit 025 0-25 0.25 0-25 0-25 <br /> LCS # BLK031798 BLK031798 BLK031798 BLK031798 BLK031798 <br /> Prepared Date 3/17/98 3/17/98 3/17/98 3/17/98 3/17/98 <br /> Analyzed Date 3/17/98 3/17/98 3/17/98 3/17/98 3/17/98 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked 10ug/L long/L 10ug/L 30,ug/L 60ug/L <br /> LCS Result 8 6 84 83 25 56 <br /> LCS % Recov 86 84 83 83 93 <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 /> SEQUO<ANALCAL 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 limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Richarding <br /> Project Manager '*MS=Matrix Spike MSD=MS Duplicate,RPO=Relative%Difference 9803305 EEE <2> <br />