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' Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 1900 Bates Avenue,Suite L Concord, CA 94520 (510) 686-9600 FAX(510) 686.9689 <br /> Analytical 819 Straker Avenue,Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916) 921 0100 <br /> 4 }NL.v�a }n vr:o-o.o.+4v}i,mow Arrr,wirw. r ArsrS r V�Ar vhijv v }^ } S irF-/hr s1•hv rah }rm0 +sr vrr mrrmwnYw.w}ni Nrwmrhwrc+SW ls..w i0.•MT snr rr.4 <br /> Mlttelhauser Corporation Client project ID 2168 01-001, Unocal/Tracy <br /> 7901 Stoneridge Drive, Suite 123 Matnx Liquid <br /> ' Pleasanton, CA 94588 M1v u w , i <br /> .Attention R Marlcs/R Papier Work Order# 9502243-09 Reported' Feb 9, 1995 <br /> n+•1''C•{r pYrrA"'lyA Yrrs N}{w m-v <br /> r t x+Y{ fW uSt• . nM+an'CiK! v}�rti ^SjviW�v.n+.vs9.n t}rrr T^'ri.Y aF lr..erx kv A4.N �M' h14JC4JpTvkK 4Y�+.vw4.hv .[ v r{y ^hWeG uv C,C .M vC't <br /> ' QUALITY CONTROL DATA REPORT <br /> Analyte: Phenol 2-Chlorophenol 1,4-Dichioro N-Nitroso-Dl- <br /> ' benzene N-propylamine <br /> OC Batch#: MS0202959270EXA MS0202958270E(A MS0202956270EKA MS020295a270EXA <br /> Analy Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method: EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> ' Analyst: L Duong L Duong L Duong L Duong <br /> MS/MSD #: 950112003 950112003 950112003 950112003 <br /> ' Sample Conc.: N D N D N D N D <br /> Prepared Date: 2/2/95 2/2/95 2/2/95 2/2/95 <br /> Analyzed Date: 2/2/95 2/2/95 2/2/95 2/2/85 <br /> Instrument I.D.#: FS F4 F4 F4 <br /> ' Conc Spiked: 2001tg/L 200 pg/L 20o ug/L 200 ug/L <br /> Result: 58 130 120 130 <br /> MS %Recovery: 29 65 60 65 <br /> Dup Result: 58 120 110 120 <br /> MSD %Recov.: 29 60 55 60 <br /> ' RPD: 00 so 87 80 <br /> RPD Limit: 0-50 0-50 0-50 0.50 <br /> h r:.co{.w.^e+..+M+-44 ,+t;.Y,c'4 cF f.`er'r%.w`"w_iz A•'K',{i.ur#,fiC.ir ,scr x}vmrhnr3 iw,.e,C c<'arx}+ r .?.}oiv�s,.,,.r.5`m,:,:a`r`ao-Kv%>.,:,"wm.wK sS}hsYw.L�..Lc`:`r3�i„^f3`}v <br /> LCS #: BLKD20295 BLKOM295 BLK020295 BLK020295 <br /> ' Prepared Date: 2/2/95 2/2/95 2/2/95 2/2/95 <br /> Analyzed Date: 2/3/95 2/3/95 2/3/95 2/3/95 <br /> Instrument I.D.#: HS F4 FS F4 <br /> ' Conc Spiked: 200 pg/L 20011g/L 200fig/L 2WNg/L <br /> LCS Result: 64 150 141 179 <br /> ' LCS %Recov.: 32 75 71 90 <br /> ' LCS 5-112 23-134 20-124 DL-23D <br /> Control Limits <br /> ' Please Note <br /> The LCS is a control sample of known,interferent-free matnx that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike 1s an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure It <br /> vm <br /> ~ the recovery of analytes from the matrix spike does not fail within specified control limits due to matrix <br /> � I interference,the LCS recovery Is to be used to validate the batch <br /> Vickie Tague Clark **MS=Matrix Spike,MSD=MS Duplicate.RPD'Relative%Difference <br /> ' Project Manager Page 1 of 3 9502'243 MMM <11> <br />