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' Sequoia 580 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 5109673 <br /> ( ) - { ) 921 0100 <br /> Analytieal e[9 Striker Avenue,Suitt 8 Sacramento CA 95634 (915) 921 9600 FAX(gib)921-D 140 <br />' Paclflc Environmental Grou M J <br /> p ClieritPr oject Ip n Y3i0-097 1A/0123, Tracy <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br />' San Jose, CA 95110 ?` <br /> Attention Maree Doden Work Order# 9505F62 01-16 <br /> v Y vn v N v Reported Jun 7, 1995 <br />' QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br />' Benzene <br /> QC Batch# GC05259.9BTE(ECA GC052595BTEXEKA GG052595BTE EXA GC052595BTEXEXA <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br />' Prep Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst S Mann S Mann S Mann S Mann <br /> MS/MSD #: 9505D4101 9505D4101 9505D4101 9505D4101 <br />' Sample Conc NO N D N D N D <br /> Prepared Date 5/25/95 5/25/95 5/25/95 5/25/95 <br /> Analyzed Date 5/25/95 5/25/95 5/25/95 5/25/95 <br />' Instrument I D #• GCHP18 GCHP18 GCHP18 GCHP18 <br /> Conc. Spiked 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 50 mg/Kg <br /> Result 017 017 017 052 <br /> MS % Recovery. 85 as 85 87 <br /> Dup. ResuR 016 016 016 049 <br />' MSD % Recov so 8o so 82 <br /> RPD 61 61 61 59 <br /> RPD Limit. 0-50 0-50 0-50 D-50 <br />' LCS#• <br /> Prepared Date: <br /> Analyzed Date- <br /> Instrument LD #. <br /> Conc. Spiked- <br /> LCS Result. <br /> LCS % Recov <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> IPlease Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> U IA ANALYTICAL preparation,and analytical methods employed for the samples The matnx spike is an aliquot of sample <br /> entfreZi'GVith known quantities of specific compounds and subjected to the entire analytical procedure K <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 /> Eileen A Manning <br /> - Project Manager '"*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9505F62 PPP <2> <br /> -- <br />