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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> a- 404 N W+get Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> IAnalytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /960619-T1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9606B93-01 Reported July 1, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4-Dichioro N-Nitroso-D1- <br /> benzene N-propylamine <br /> QC Batch# MS0620968270EXA MSW20968270EXA MS0620968270EXA MS0620968270EXA <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# BLK062096 131-062096 BLK062096 BLK062096 <br /> Sample Cone. N D N D N D N D <br /> Prepared Date 6/20/96 6/20/96 6/20/96 6/20/96 <br /> Analyzed Date 6/21/96 6/21/96 6/21/96 6/21/96 <br /> Instrument l D # HP5972 HP5972 HP5972 HP5972 <br /> Cone. Spiked 2Wpg/L 200 pg/L 20opg/L 200pg/L <br /> Result. 62 130 130 130 <br /> MS % Recovery- 31 65 65 65 <br /> Dup Result 65 130 130 140 <br /> MSD %Recov 33 65 65 70 <br /> RPD 47 00 00 74 <br /> RPD Limit 0-20 0-15 0-13 0-18 <br /> LCS#: - - - - <br /> Prepared Date - - - - <br /> Analyzed Date - - - <br /> Instrument 1.134 <br /> Cone <br /> - - - <br /> Conc Spiked - - - - <br /> LCS Result- <br /> LCS%Recov.- - - - - <br /> LCS 12-110 27-123 36-97 41-116 <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 /> $ I 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 M <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 /> Pe 9 r *"MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager Page 1 of 3 96061393 BLA <4> <br />