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COHLAB 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 981689 Date 11/11/98 <br /> ICUSTOMER. or Daniel GTI PROJECT SL/5T0CKTON #20632 A77N. Shelby Lathrop Description Reag Code Lab ID Dilution Factor Date Time <br />�_T�e5t,Method EPA 8020A Batch 3533 Analyst vz <br /> d Description Volatile Organi Units ug/L <br /> fl8 Method Blank 11/04/98 1013 <br /> Parameter/Test Description OC Result QC Result True Value Orig Value Calc Result * Limits <br /> nzene 0 0443 0 50 <br /> Ethylbenzene 0 0 50 <br /> Methyl-t-Butyl Ether (MTBE) 0 10 00 <br /> luene 0 0716 0 50 <br /> lenes (total) 0 00 0 50 <br /> LCD Laboratory Control Sample Duplicate 08110202 11104/98 1202 <br /> Parameter/Test Description QC Result 4C Result True Value Orig Value Calc Result * Limits <br /> Be ene 62 484 49 402 50 125 0 % 39-150 <br /> 23 4 R 20 <br /> benzene 54 989 44 152 50 110 0 % 32-160 <br /> io <br /> 21 9 R 20 <br /> Methyl-t-Butyl Ether (MTBE) 55 038 40 852 50 110 1 % 50-150 <br /> 29 6 R 25 <br /> Fluene 61 057 48 989 50 122 1 % 46-148 <br /> 21 9R 20 <br /> Xylenes (total) 175 01 139 00 150 116 7 % 75-125 <br /> 22 9 R 20 <br /> IV Initial Calibration Verification 8020 b8110201 11/04/98 1256 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> nzene 51 183 50 102 % 85-115 <br /> Ethylbenzene 49 720 50 99 % 85-115 <br /> Methyl-t-Butyl Ether (MTBE) 43 838 50 88 % 70-130 <br />�Luene 50488 50 101 % 85-115 <br /> ns (total) 149 00 150 99 % <br /> le85-115 <br /> LCS Laboratory Control Sample 08110202 11/04/98 0252 <br /> Parameter/Test Description 4C Result QC Result True Value Orig Value Calc Result * Limits <br /> Benzene49 402 50 98 8 % 39-150 <br /> thylbenzene 44 152 50. 88 3 % 32-160 <br /> hyl-t-Butyl Ether (MTBE) 40 852 50 81 7 % 50-150 <br /> uene 48 989 50 98 0 % 46-148 <br /> Xylenes (total) 139 00 150 92 7 % 75-125 <br />' Page 14 <br /> * %-% REC R-RPD A-ABS Diff D-% Diff <br /> The—yl c_I Oen, ,u e th cp.1 1,poen m,ad.T e oN v, b nn up n n n1 Pel p <br /> e p e Ertl a oY epnl Ih-heel.AGn1en1 pl Care"3tw O CP-Lupo—a hewe'+w make n0 wa}pn,y 0 ene enla,o s PP 5 0 mPi Btl o}any type aM.,P w ry tl wGa"tgwno,a n ,a tnb P a0 e, ,Y p PP oPt 1 an t p p,agora o a o <br /> a Y B 9s ptpp m ne ai WopartY w amna n necibh w,h wn.ch each sport 15 uaso or -a0 pon Iq PnY Ba 4n wMlapeYet TY apP f shf ^al pa rpo0 CBO Pa w,hr^a,h w,1 0,Ca <br />