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Sequoia 680 Chesapeake Drive Redwood City CA 9406; (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (5t0) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> »,.yetm \rh�Ov �r^ry nr r }�4 s r. v Ory v vZ...v n n•r�m mr`n.{Jv r�}r sr iti <br /> Blaine Tech Services,Inc Client Project ID r chevron 9-8264%970827-T1 <br /> } <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9708E76-01, 03 Reported Sep 9, 1997' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes Xylenes <br /> Benzene <br /> QC Batch# G0090297BTEX07A GC090297BTEX07A GC090297BTEx07A G0090297STEX07A GCO90297BTEX07A <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. A.Porter A Porter A Porter A.Porter A Porter <br /> MS/MSD# 97081378-01 9708D78-01 9708D78-01 97081378-01 9708D78-01 <br /> Sample Cone N D N D N D N D N D <br /> Prepared Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Analyzed Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Instrument I D.# GCHP-07 GCHP-07 GCHP-07 GCHP-07 GCHP-07 <br /> Cone Spiked 10 jig/L 10 ug/L 10,ug/L 30 ug/L 60 ug/L <br /> Result 98 96 95 29 64 <br /> �MS% Recovery 98 96 95 97 107 <br /> Dup Result 93 90 90 27 60 <br /> MSD % Recov ' 93 90 90 90 100 <br /> RPD 52 65 54 71 B5 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS# GWBLK090297 GWBLK090297 GWBLK090297 GWBLK090297 GWBLK090297 <br /> Prepared Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Analyzed Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Instrument I D.# GCHP-07 GCHP-07 GCHP-07 GCHP-07 GCHP-07 <br /> Cone Spiked loug/L 10ug/L 10pg/L 30pg/L 60ug/L <br /> LCS Result 91 89 89 27 60 <br /> LCS % Recov • 91 89 89 90 100 <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 /> VroctPlease Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> 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 /> interference,the LCS recovery is to be used to validate the batch <br /> ner <br /> nager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9708E76 BLA a3> <br /> 'bd' <br />