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Sequoia 680 Chcsapeaka Drive Rcdwood City CA 94053 (55o)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9500 FAX(925)989-9673 <br /> ,-!D— <br /> Analytical 819 Strlkcr Avenue Suite 8 Sacramento CA 95834 (9 16)921-9600 FAX(916)92I-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)79Z-1865 FAX(707)79I-0342 <br /> UTJ��7sr': Uki,r,ms's 4''0,yif`C`,p'nv9+7'r '+fr`iti'{ fFC`\N r<K,C <br /> U.b �� }4h} �}lir',Y {v N,L' f%� { w}�`} 4`{ <br /> qka'l�e�! Tech Servlces, Inc Clem protect la Chevron 9-4275/9$0910-12 ' <br /> 1660 Rogers Ave Matrix Llquld <br /> San Jose, CA 95112 <br /> Attentlon Fran Thle Work Order# 9809721-01-11 Reported Sep 29 1998 <br /> ✓z ' ? 4 '`r f }'r `4` .,oq o r },,•tVF {rr<atir,+o `u i�.4"„r r.,{� ✓ ,r t'„r Ari >",�e .V r r 'i�.:0:"3, <br /> ..s.�C.,.... t� <br /> QUALITY CONTROL DATA REPORT <br /> nal yte' Benzene Toluene Ethyl Xylenes BTEX as TPH <br /> Benzene <br /> GC Hatch#. GC0911796802009A GCO917988020MA GC091798e02009A 000917988020MA 00091798802009A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA SU20 EPA 8015M <br /> Prep.Method: EPA$030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst, J Minkel J Minkel J Minkel J Mlnkol J Minkel <br /> MS/MSD#- 8091271 8091271 8091271 8091271 6091271 <br /> Sample Conc. N D N D N D N D N D <br /> Prepared Date 9/17/98 8/17/98 9/17/96 9/17/98 9/17/98 <br /> Analyzed Date. 9/17/98 9/17/98 9/17/98 9/17/98 9/17/98 <br /> Instrument I.D.#: HPO HP9 HP9 HP9 HP9 <br /> Conc Spiked 20 Mg/L 20 ug/L 4 N9/1- 60ug/L 250 u9/L <br /> Result. 21 22 22 59 290 <br /> IVIS % Recovery, 106 110 110 115 116 <br /> Dup. Result: 20 21 22 e8 280 <br /> MSD OL Recov.; 100 105 110 113 112 <br /> /D RPD 49 47 00 15 35 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-50 <br /> f <br /> y {> ,f .y'}u } SF ,� g`},r.. E L 1 T � l�frC��Ji.`Ft�F ✓ � n� H,::��v:r`�}k' r` ' ,r r o.,o � Fsfi:�� r <br /> " � %,R`- <br /> � ,z.� r <br /> LCS # LCS091798 LCS091798 I-CS091798 LCS091796 LCS091795 <br /> Prepared Date: 9/17/98 9/17/98 9/17/96 9/17/98 9/17/98 <br /> Analyzed Date: 9/17198 9/17/98 9/17/96 9/17/98 9/17/98 <br /> Instrument I.D.#: HP9 HN HP9 HP9 HP9 <br /> Conc. Spiked: 20jig/L 20ua/L 20ug/L e01ig/L 250 p9/1- <br /> LCS <br /> 9/LLCS Result 21 22 23 71 leo <br /> LCS % Recov.- 105 110 115 110 112 <br /> HD-140 60-140 60-140 60-140 <br /> LCS 10-130 70-130 70-130 70-130 60-140 <br /> Control Limits <br /> Please Note <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known Interferent free matrix that Is analyzed using the same reagents <br /> Elap# preparation,and analytical methods employed for the samples The matrix aplke is an allquot of sample <br /> fortified with known quantltles of specific compounde and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within apeclfied control limits due to matrix <br /> interterence,the LCS recovery Is to be used to validate the batch <br /> gory <br /> ct Manager MS=Matrix Spike MSI)=MS Duplicate,RPO=Relative%Difference 2t-01-i1 BLA <12. <br /> Mo d Ii i tic ROt 'SII Hglf INIVgg / n c1 I(IIAIR6 II- 110 <br />