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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia Walnut Creek CA 94598 925 988-9600 FAX 925 988-9673 <br /> 404 N WigetLane ( ) ( ) <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 fAX(707)791-0342 <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. 1,2 4-Trichloro- 4-Chloro-3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> QC Batch# MS0611988270EXB MS0611988270EX13 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 D 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 200 ug/L 200 ug/L 200 ug/L 200 ug/L <br /> Result 129 117 127 33 <br /> MS % Recovery 65 59 64 17 <br /> Dup Result 139 126 134 45 <br /> MSD % Recov 70 63 67 23 <br /> RPD 75 74 54 31 <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 ug/L- 200 ug/L zoo ug/L 200 ug/L <br /> LCS Result' 124 130 122 50 <br /> LCS % Recov 62 65 61 25 <br /> LCS <br /> Control Limits 39-98 23-97 46-118 10-80 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> WSEQUOIA YTICAL 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 hatch <br /> **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Page 2 of 3 9806003 BLA <3> <br />