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ILA B CORE LABORATORIES <br /> Q U A L I T Y C 0 N T R 0 L R E S U L T S <br /> Job Number 981252 Date 09/09/98 <br /> CUSTOMER Fluor Daniel GTI PROJECT 102455-6304 ATTN Shelby Lathrop <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> CV Continuing Calibration Verification 08030501A 08/29/98 0136 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> ylenes (total) 61 21 60. 102 D 85-115 <br /> CV Continuing Calibration Verification 08030501A 1)8/29/98 0407 <br /> Parameter/Test Description QC Result QC Result True Vatue Orig Value Calc Result * Limits <br />�enzene 21 555 20 108 D 85-115 <br /> thylbenzene 18 797 20 94 D 85-115 <br /> ethyl-t-Butyl Ether (MTBE) 30 265 20 151 D 70-130 <br /> Toluene 19 913 20 100 D 85-115 <br /> Xylenes (total) 58 45 60 97 D 85-115 <br /> Test Method EPA 82608 Batch 2779 Analyst daf <br /> Method Description Volatile Organics by GC/MS Units ug/L <br /> MB Method Blank 09/04/98 1659 <br />. Parameter/Test Description QC Result QC Result True Value Orig Value Catc Result * Limits <br /> art-Butyl Alcohol (TBA) -43 54 100 <br /> Di-Isopropyl Ether -2 77 5 00 <br /> fthy[ tert-Butyl Ether (ETRE) -2 60 5 00 <br /> ert-AmyL Methyl Ether -2 09 5 00 <br /> ethyl-t-Butyl Ether (MTBE) -5 37 10 00 <br /> MS Matrix Spike 08060207 981252-1 1000 09/05/98 0156 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> Iert-Butyl AlcohoL (TBA) 526 71 500 000000 -37 03 112 7 % 75-125 <br /> i-Isopropyl Ether 27 04 25 000000 -2 75 119 2 % 75-125 <br /> ihyl Cert-Butyl Ether (ETRE) 26 53 25 000000 -2 18 114 8 % 75-125 <br /> tert-Amyl Methyl Ether 24 74 25 000000 0 99 0 % 75-125 <br /> Methyl-t-Butyl Ether (MTBE) 52 39 50 000000 -5 41 115 6 % 75-125 <br /> MSD Matrix Spike Duplicate 08060207 981252-1 1000 09/05/98 0234 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> art-Butyl Alcohol (TBA) 508 94 526 71 500 000000 -37 03 109 2 % 75-125 <br /> 3 R 20 <br /> Di-Isopropyl Ether 26 83 27 04 25 DOOOOO -2 75 118 3 % 75-125 <br /> 1 R 20 <br /> thyL tent-Butyl Ether (ETRE) 26 22 26 53 25 000000 -2 18 113 6 % 75-125 <br /> 1 R 20 <br /> tj&myl Methyl Ether 24 05 24 74 25 000000 0 96 2 % 75-125 <br /> 3 R 20 <br /> Page 7 <br /> * %-% REC R-RPD A-ASS Diff D-% Diff <br /> Tno analV Cal es rts oprun�s c 11.a aralb is edtl ao IIs anal a u Waal uVv 1.1.Va1 pn and t r 1 11 0 u1 ay Ill.ci w,1.wm n I s I s 11 CP r wnl al u e r a t r1 1 I vean n I]a TI a v alyt ca,rasa,s pp n J^g or ulr P r a I Pns <br /> 1 e P ossva npenty 1 11 a best l Ip 1 u[I pl Cn Ito dv nu rx vCm Laan[n wl acn a cr x ra Svnp wa n Iti 'a; [Yl,pn e p Bse O vM t OI�nny r Slk a 1r do r.Os<Inc o� w lm 's Ip Ir I prptl Ct IV V PVm Oot a int v prof[aL ernxs55l <br /> ny UI qas 11 n v[!Bt n }xtY'� .0. ecib w pp 1 5 s.tl P/ ea90 wn.Ilao ft r all I I w11 p1 V e w Ilan app 7 I o Cn a Labo alp e <br />