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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N W�gct Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> u�! ,�;;.,,vx''4SY3�o#'k ,v.r'rrr,c+:o or'• ir .~Y.r,4o :'.""'ir ,.rrA uMx 'tr` ';s,YY$ 'f, +rr'rvr Y.'..oa r r .. V° ?tr',,.a'! r .. .'r.. - <br /> ^Blalne Tech Services,Inc Client Project ID n Chevron 9-1918/960424-A2 <br /> x985 Timothy Drive Matrix Liquid <br /> .San Jose,CA 95133 ' <br /> 'Attention Jim Keller Work Order# 9604192-01-03,06-07 Reported May 15, 1996; <br /> ,! <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO50296BTEX06A GCO50296BTEXOSA GC050296BTEX06A GCO50296BTEX06A <br /> Analy Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method' EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. E Cunanan E Cunanan E Cunanan E Cunanan <br /> MS/MSD# 96041-12623 96041-12623 96041-12623 9604H2623 <br /> Sample Conc N D ND N D N D <br /> Prepared Date 5/2/96 5/2/96 5/2/96 5/2/96 <br /> Analyzed Date 5/2/96 5/2/96 5/2/96 5/2/96 <br /> Instrument LD#: GCHP6 GCHP6 GCHP6 GCHP6 <br /> Conc Spiked: 10pg/L 10pg/L 10pg/L 30pg/L <br /> Result. 99 99 99 31 <br /> MS%Recovery: 99 99 99 103 <br /> Dup Result: 95 95 95 30 <br /> MSD %Recov.. 95 95 95 100 <br /> RPD: 41 41 41 33 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> ! v` YYr} YC" mxnMV r ~r' nv.Y 1 !r! r ,r s ' ! 4v ~{V , }nr ry Nv4!! Y + vV , ~ ` •~ ! ` t +VV„�,rt V , <br /> LCS#: BLK050296 BLK050296 BLK050296 BLK050295 <br /> Prepared Date. 5/2/96 5/2/96 5/2/96 5/2/96 <br /> Analyzed Date 5/2/96 5/2/96 5/2/96 5/2/96 <br /> Instrument I D#. GCHP6 GCHP6 GCHP6 GCHP6 <br /> Conc Spiked 10pg/L 10pg/L 10Ng/L 30pg/L <br /> LCS Result* 98 98 98 30 <br /> LCS%Recov.• 98 98 98 100 <br /> 60-140 60-140 60-140 60-140 <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 /> tilecteanager <br /> ALYTICAL 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 /> '*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9604192 BLA <7> <br />