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I <br /> A p 7 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> I Sa,.quoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> i7 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9z1-9600 FAX(916)921-Ot00 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Project ID Shell 1071 N Main St <br /> 1680 Rogers Ave <br /> San Jose, CA 95112 <br /> Attention Fran Thie QC Sample Group 9810727-05 Reported Oct 23 1998 ' <br /> QUALITY CONTROL DATA'REPORT <br /> Matrix Liquid I ' <br /> Method EPA 801018020,'6011602 <br /> Analyst B ALI , <br /> ANALYTE 1,1-DCE TGE Chlorobenzene <br /> QC Batch# GC1016980VOA29A <br /> Sample No 9810574-01 <br /> Date Prepared 10/14/98 10/14/98 10/14/98 <br /> Date Analyzed 10/14/98 10/14/98 10/14/98 <br /> Instrumenfl D-# GCHP 29 GCHP 29 GCHP 29 <br /> Sample Conc, ug/L N D 06 N D <br /> Conc Spiked, ug/L 25 25 25 <br /> Matrix Spike, ug/L 25 22 27 <br /> % Recovery 1000 86 108 <br /> Matrix <br /> pike Duplicate,ug/L 25 23 20 • <br /> %Recovery 1000 90 80 <br /> elative% Difference 00 45 30 <br /> RPD Control Limits 0-50 0-50 0-50 <br /> LCS Batch# VWLCS101698 <br /> Date Prepared 10/16/98 10/16/98 10/16/98 <br /> Date Analyzed 10/16/98 10/16/98 10/16/98 <br /> Instrument I D# GCHP_29 GCHP-29 GCHP_29 <br /> Conc Spiked,uglL 25 25 25 <br /> Recovery, ug/L 25 23 21 <br /> LCS% Recovery 1000 92 84 <br /> Percent Recovery Control Limits <br /> MS/MSD 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Note <br /> tegTICAL preThe LCS is a control sample of known interferent free matnx that is analyzed using the same reagents <br /> NA Yparabon and analytical methods employed for the samples The matnx spike is an aliquot of sample • <br /> rUfied with known quantities of specific compounds and subjected to the entire anaiybcal procedure if <br /> the recovery of analytes from the matnx spike does not fall within spec fled control limits due to matrix <br /> Interference the LCS recovery is to be used to validate the batch <br /> Penner <br /> Project Manager Oct <br />