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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX f916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8264/980609-J1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order # 9806003-01 Reported Jun 25, 1998 <br /> (QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 14-Dlchloro- N-Nitroso-Di- <br /> benzene N-propylamine <br /> QC Batch# MS0611988270EXB MS0611988270EXB MS0611988270EXB MS0611988270EXB <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 # BLK061198 BLK061198 BLK061198 BLK061198 <br /> Sample Conc N D N 1) N D N D <br /> Prepared Date 6/11/98 6/11/98 6/11/98 6/11/98 <br /> Analyzed Date 6/12/98 6/12/98 6/12/98 6/12/98 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conc Spiked 200pg/L 200 jug/L 200Ng/L 200pg/L <br /> Result 48 112 106 111 <br /> MS % Recovery 24 56 53 56 <br /> Dup Result 50 113 114 111 <br /> MSD % Recov 25 57 57 56 <br /> RPD 41 089 73 00 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS # LCS061298 LCS061298 LCS061298 LCS061298 <br /> Prepared Date 6/12/98 6/12/98 6/12/98 6/12/98 <br /> Analyzed Date 6/12/98 6/12/98 6/12/98 6/12/98 <br /> Instrument I.D # H5 H5 H5 H5 <br /> Conc Spiked 200 yg/L 200 fig/L - 200 yg/L 200 f<g/L <br /> LCS Result 56 114 100 128 <br /> LCS % Recov 28 57 50 64 <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 /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sarnple <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 /> ®rect <br /> gD� <br /> t **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> anager Page 1 of 3 9806003 BLA <2> <br /> 4D <br />