Laserfiche WebLink
` Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> is <br /> Gettler Ryan/Geostrategies Client Project ID Chevron 9-6171, Stockton <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> Dublin, CA 94568 <br /> Attention Deanna Harding Work Order# 9602848 -04 Reported Feb 21, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO21696BTEX0IA GCO21696BTEX01A GCO21696STEX01A GCO21696BTEX01A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 6020 <br /> Prep Method- EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst D Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD#' G9602618-06E Gx9602618-06E G9602618-06E G9602618-06E <br /> Sample Cone N D N D N D N D <br /> Prepared Date 2/16/96 2/16/96 2/16/96 2/16/96 <br /> Analyzed Date 2/16/96 2/16/96 2/16/96 2/16/96 <br /> Instrument I.D.# GCHP1 GCHP1 GCHP1 GCHP1 <br /> Cone Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result 97 95 99 29 <br /> MS % Recovery 97 95 99 97 <br /> Dup. Result 10 10 11 31 <br /> MSD % Recov. 100 100 110 103 <br /> RPD 30 51 11 67 <br /> RPD Limit 0-50 0-50 0-50 0-50 <br /> LCS# GBLK021696BS-A GBLK021696BS-A GBLK021696BS-A GBLK021696BS-A <br /> Prepared Date 2/16/96 2/16/96 2/16/96 2/16/96 <br /> Analyzed Date 2/16/96 2/16/96 2/16/96 2/16/96 <br /> Instrument LD # GCHP1 GCHP1 GCHP1 GCHP1 <br /> Cone Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Result 94 94 94 29 <br /> LCS % Recov 94 94 94 97 <br /> LCS 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 /> .SEQUOIA 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 /> r interference,the LCS recovery is to be used to validate the batch <br /> Mike Gregory <br /> Project Manager MS=Matrix Spike,MSD=MS Duplicate, RPO=Relative%Difference 9602848 GET <2> <br />