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Sequoia680 Chesapeake Dnve 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 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Blaine Tech Services,Inc rv> } Client Project ID ' Chevron'9-82G4%Y970107-Z21 tr r <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 ry <br /> ;Attention Fran Thie Work Order# 9701261-01 Reported Jan 16, 1997,, <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: 2,4Dinitro- Pentachloro- Pyrena <br /> toluene phenol <br /> QC Batch#' MS0107978270EXA MS0107978270EXA MS0107978270EXA <br /> Analy. Method. EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method- EPA 3510 EPA 3510 EPA 3510 <br /> Analyst E Manuel E Manuel E Manuel <br /> MS/MSD# BLK010797 BLK010797 BLK010797 <br /> Sample Cone. NO N D N D <br /> Prepared Date 1/7/97 1/7/97 1/7/97 <br /> Analyzed Date 1/8/97 1/8/97 1/8/97 <br /> Instrument I D # F4 1=4 F4 <br /> Cone. Spiked 200 fig/L 200 pg/L 200 pg/L <br /> Result 160 168 222 <br /> MS % Recovery. So 84 111 <br /> Dup Result 154 158 205 <br /> MSD % Recov 77 79 103 <br /> I <br /> RPD, 38 61 so <br /> RPD Limit. 0-30 0-30 0-30 <br /> LCS #: WBO10997 WBO10997 WBO10997 <br /> Analyst: B Pitamah B Pitamah B Pitamah <br /> Prepared Date: 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date: 1/12/97 1/12/97 1/12/97 <br /> Instrument 1.13 #: F4 F4 F4 <br /> Cone. Spiked 200 pg/L 200pg/L 200 ug/L <br /> LCS Result- 125 135 122 <br /> LCS % Recov. 63 68 61 <br /> LCS <br /> Control Limits 24-96 9-103 26-127 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> I 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 /> VP ]ec,t <br /> er **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference <br /> Manager Page 3 of 3 9701261 BLA <10> <br />