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p 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 1 ' <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> ® 819 Striker Avenue Suite 8 Sacramento CA 95634 (916)921-9600 FAX(916)921-0100 <br /> Anal,.T�' � 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> Yg 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650) 232-9612 <br /> equola Analytical Client Project 1D 1-905529- Blaine Tech Services, Inc <br /> 1551 Industrial Blvd Matrix Liquid <br /> San Carlos, CA 94070 <br /> Attention Mike Gregory QC Sample Group 9052409-412 Reported Jun 16, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4-Dichioro N-Nitroso-Ds- 1,2,4-Tnchloro 4-Chloro-3 <br /> benzene N-propylamine benzene Methylphenol <br /> QC Batch# SP060199 SP060199 SP060199 SP060199 SPD60199 SP060199 <br /> 8270EXA 8270EXA 8270EXA 8270EXA 8270EXA 8270EXA <br /> Anally Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst L Diaz L Diaz L Diaz L Diaz L Diaz L Diaz <br /> MS/MSD # BLK060199 SLK060199 BLK060199 BLK060199 BLK060199 BLK060199 <br /> Sample Conc ND ND ND ND ND ND <br /> Prepared Date 6/1/99 6/1/99 6/1/99 6/1/99 6/1/99 6/1/99 <br /> Analyzed Date 6/3/99 6/3/99 6/3/99 6/3/99 6/3/99 6/3/99 <br /> Instrument I D # GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> Conc Spiked 150ug/L 150ug/L 100 ug/L 100yg/L 100 pg/L. 150 ug/L <br /> Result 40 94 57 76 70 100 <br /> MS % Recovery 27 63 57 76 70 67 <br /> Dup Result 46 99 60 76 75 110 <br /> MSD %Recov 31 66 60 76 75 73 <br /> RPD 14 52 51 00 69 95 <br /> RPD Limit 0-30 0-30 0-30 0-30 0-30 0-30 <br /> LCS # - - - - - <br /> Prepared Date - - - - <br /> Analyzed Date - - - <br /> Instrument I D # - - <br /> Conc Spiked - - - - - <br /> LCS Result - - - <br /> LCS % Recov - - - - - - <br /> LCS 12-110 27-123 36-97 41-116 39-98 23-97 <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 /> preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> SEQUOIA ANALYTICAL, #1271 fortified with known quantities of specific compounds and sub)ected 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 <br /> Aestwater <br /> Project Manager Page 1 of 2 <br /> 9052409 SSS <14> <br />