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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 %W FAX(415)364 9233 <br /> 404 N %get lane Walnut Geek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Stinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> WOUChstone Developments Client Project II) Chevron #9-8264 <br /> P 0 Box 2554 Matrix Solid <br /> Santa Rosa, CA 95405 <br /> Attention Jeff Monroe QC Sample Group 5111262-269 Reported Nov 29, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Lead <br /> Benzene <br /> QC Batch# SP112-295SP112295 SP112295 SP112295 ME111695 <br /> 8020EXA 8020EXA 8020EXA 8020EXA 6010MDB <br /> Analy Method- EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 7420 <br /> Prep Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 3050 <br /> Analyst M Creusere M Creusere M Creusere M Creusere T Le <br /> MS/MSD #• 5111784 5111784 5111784 5111784 5110577 <br /> Sample Cone N D N D N D N D 2 6 mg/kg <br /> Prepared Date 11/22/95 11/22/95 11/22/95 11/22/95 11/16/95 <br /> Analyzed Date- 11/22/95 11/22/95 11/22/95 11/22/95 11/22/95 <br /> Instrument I D # HP-2 HP-2 HP-2 HP-2 My-1 <br /> Cone Spiked 0 40 mg/kg 0 40 mg/kg 0 40 mg/kg 1 2 mg/kg 50 mg/kg <br /> Result 049 047 048 15 43 <br /> MS % Recovery 123 118 120 121 81 <br /> Dup Result 045 043 045 13 45 <br /> MSD % Recov 113 108 113 112 85 <br /> RPD 85 89 65 79 45 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-20 <br /> LCS # 1LCS112295 lLCS112295 1LC8112295 1LCS112295 BLK111695 <br /> Prepared Date 11/22/95 11/22/95 11/22/95 11/22/95 11/16/95 <br /> Analyzed Date 11/22/95 11/22/95 11/22/95 11/22/95 11/22/95 <br /> Instrument 1 D #: HP-2 HP-2 HP-2 HP-2 MV-1 <br /> Cone Spiked 20ug/L 20ug/L 20Ng/L 60Ng/L 50 mg/kg <br /> LCS Result. 20 20 20 61 42 <br /> LCS % Recov.. 98 98 102 102 84 <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 75-125 <br /> Please Note <br /> The LCS is a control sample of known, interferent-free matrix that is analyzed using the same reagents, <br /> S DUO ANALYTICAL, #1271 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 /> Ken th Imer **MS= <br /> Matrix Spike, MSD=M Duplicate, RPD=Relative%Difference <br /> Prate Manager <br /> 5111262 TTT <4> <br /> `6c'l <br />