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+ Sequoia 680 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(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> .r,r .ryr .vryr.r ; : 4. ;�nnrV . ry . r <br /> Blaine Tech 84i ic'la 'N' <br /> Inc die"nt Project ID Chevron 9-8632/976107-Z1' ry <br /> 1680 Rogers Avenue Matrix Liquid s <br /> >San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9701244-01 Reported Jan 16, 1997 <br /> •{ , r yvv , : n <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Phenol 2-Chlorophenol 1,4-Dichloro- N-Nitroso-Di- <br /> benzene N-propylamme <br /> QC Batch#' MS0107978270EXA MS0107978270EKA MS0107978270EXA MS0107978270EXA <br /> Analy Method. EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep. Method: EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst: E Manuel E Manuel E Manuel E Manuel <br /> MS/MSD#: BLK010797 BLK010797 BLK010797 BLK010797 <br /> Sample Conc. N D N D N D N D <br /> Prepared Date. 1/7/97 1/7/97 1/7/97 1/7/97 <br /> Analyzed Date: 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conc. Spiked 200 pg/L 200pg/L 200 pg/L 200pg/L <br /> Result 74 174 119 162 <br /> MS % Recovery. 37 87 60 81 y <br /> Dup. Result- 83 179 122 171 <br /> MSD % Recov 42 90 61 86 <br /> RPD: 11 28 25 5 4 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> Cn ry r r ♦ r v r <br /> LCS#- WBO10997 WBO10997 WBO10997 M010997 <br /> Analyst. B Pitamah B Pitamah B Pitamah B Pitamah <br /> Prepared Date. 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date: 1/12/97 1/12/97 1/12/97 1/12/97 <br /> Instrument LD #' F4 F4 F4 F4 <br /> Conc. Spiked 200pg/L 200pg/L 200 pg/L 200pg/L <br /> LCS Result: 79 170 148 170 <br /> LCS %Recov.- 40 85 74 a5 <br /> MSIMSDF <br /> LCS <br /> Control Limits 12-110 27-123 36-97 41-116 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> U IA NALYTICAL 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 /> en MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Projec Manager Page 1 of 3 9701244 BLA <7> <br />