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i <br /> (OULAB 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 /> ,lob Number 981417 Date 09/28/98 <br /> CUSTOMER Fluor Daniel GTi PROJECT SL MANTECA 103996304 ATTN Greg Mason <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> Test Method EPA 8020A Batch 2986 Analyst pmc <br /> Method Description Volatile Organo Units ug/L. <br /> CV Continuing Calibration Verification 08082701 09/26/98 0236 <br /> Parameter/Test Description QC Result OC Result True Value Orig Value Calc Result * Limits <br /> zene 18 414 20 92 % 85-115 <br /> ylbenzene 19 456 20 97 % 85-115 <br /> hyl-t-Butyl Ether (MTBE) 21 481 20 107 % 85-115 <br /> Toluene 18 946 20 95 % 85-115 <br /> enes (total) 57 70 60 96 % 85-115 <br /> MB Method Blank 09/26/98 0301 <br /> Parameter/Test Description QC Result QC Result True Value Orig. Value Calc Result * Limits <br /> zene 0 y 0 5000 <br /> Ethylbenzene 0 0 5000 <br /> Wt-ButyL Ether (MTBE) 0 10 0000 <br /> 0 0 5000enes (total) 0 00 0 5000 <br /> CS Laboratory Control Sample 08082701 09/26/9$ 0416 <br /> °ar"._te-/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> zene 21 623 20 108 1 % 39-150 <br /> ylbenzene 21 116 20 105 6 % 32-160 <br /> hyl-t-Butyl Ether (MTBE) 21 181 20 105 9 % 50-150 <br /> Toluene 21 388 20 106 9 % 46-148 <br /> Xylenes (total) 64 06 60 106 8 % 75-125 <br /> CV Continuing Calibration Verification 08082701 09/26/98 0443 <br /> Parameter/Test Description QC Result Ot Result True Value Orig Value Calc Result * Limits <br /> zene 18 444 20 95 % 85-115 <br /> Ethytbenzene 18 620 20 93 % 85-115 <br /> Methyl-t-Butyl Ether (MTBE) 19 783 20 99 % 85-115 <br /> uene 19 103 20 96 % 85-115 <br /> enes (total) 56 67 60 94 % 85-115 <br /> CV Continuing Calibration Verification 0$082701 09/26/98 0440 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> Benzene 18 483 20 92 % 85-115 <br /> ylbenzene 18 785 20 94 % 85-115 <br /> hyl-t-Butyl Ether (MTBE) 20 836 20 104 % 85-115 <br /> 18 445 20 95 % 85-115 <br /> Pagel 7 <br /> * X-% REC R-RPD a-ABS Diff D Y. Diff <br /> Y ly[r ssM J s^N n xi P.fn c y P I N Pa r o nW 1 1,x 359 0, <br />' ^t 1 1 o n Iry]I Y t x[. .. .. , ♦u5n]P .axi Ib II, . .� wASlsowv 11 ql,rl sl IM t«] M n.! c r.. i I <br /> 10'°s aTMl ]O a a a Gne SaI1P a rN 5 <br />