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I <br /> to COHL" 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 /> CUSTOMER. Floor Daniel GTI PROJECT. SL/STOCKTON #20632 ATTN. Shelby Lathrop <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> Test Method EPA 82608 Batch 3589 Analyst vz <br /> Method Description Volatile Organics by GC/MS Units ug/L <br /> #I8 Method Blank 11/06/98 1306 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> frt-Butyl Alcohol (TBA) 0 100 <br /> ,-IsopropyL Ether 0 5 00 <br /> Ethyl tert-Butyl Ether (ETRE) 0 5 00 <br /> Frt-Amyl Methyl Ether 0 5 00 <br /> thyt-t-Butyt Ether (MTBE) 0 10 00 <br /> SH Spiked Blank 08092101 1000 11/06/98 1659 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> to -Butyl Alcohol (TBA) 389 99 500 000000 78 0 % 75-125 <br /> propyl Ether 19 62 25 000000 78 5 % 75-125 <br /> tert-Butyl Ether (ETBE) 21 20 25 000000 84 8 % 75-125 <br /> rt-Amyl Methyl Ether 23 33 25 000000 93 3 % 75-125 <br /> Methyl-t-Butyl Ether (MTBE) 38 84 50 000000 77 7 % 75-125 <br /> 5BD Spiked Blank Duplicate 08092101 1000 11/06/98 1730 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> 11 rt-Butyl Alcohol (TBA) 413 02 413 02 500 000000 82 6 % 75-125 <br /> 00 R20 <br /> Di-isopropyl Ether 20.79 20 79 25 000000 83 2 % 75-125 <br /> 00 R20 <br /> hyl tert-Butyl Ether (ETBE) 22 65 22 65 25 000000 90 6 % 75-125 <br /> 00 R20 <br /> tert-Amyt Methyl Ether 24 82 24 82 25 000000 99 3 % 75-125 <br /> 00 R20 <br /> 1thyt-t-ButyL Ether (MTBE) 40 99 40 99 50 000000 82 0 % 75-125 <br /> 0 0 R 20 <br /> CV Continuing Calibration Verification 08092101 1000 11/06/98 1452 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> tert-Butyl Alcohol (TBA) 375 23 500 000000 75 D 75-125 <br /> Isopropyl Ether 20 58 25 000000 82 D 75-125 <br /> hyl tert-Butyl Ether (ETBE) 20 97 25 000000 84 D 75-125 <br /> rt-Amyl Methyl Ether 22 41 25 000000 90 D 75-125 <br /> Methyl-t-Butyl Ether (MTBE) 41 47 50 000000 83 D 75-125 <br />' Page 31 <br /> * %-% REC R-RPD A-A65 Diff D-% Diff <br /> me a�.M�-i f c Is op na o le.G efaiiaas canl,nLb <br /> 1.1 cool.„x p+oa ion nro mat a no I—�I pp IaPnl_I I e In vpon na o1 Tna a e,, x ell a - <br /> xYPrt ed cpr.t-nt Ina ne I,p9+,en1 pl CO a P nitf n c Cde Lenoratp a nowe B<mku o wa t p.fGP B�t Y[on a the t o mG etl of Y tYPo frvJ of . ame a...1-wotlu..l ly 7, ope atxi n P P of t E ne o <br /> dnv o pfi f oil a of ne m ai p oPMY w P nttil on wrtn wixcF such tepDN .ed a e upon Id wnel-0ep T cpP I h MI Ea rt oouLed n wMtx a r1 the w t1 ppm n*Cox L7tw+o r <br />