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Oct-11-02 04 32pm From-Gettler-Ryan Inc +925 551 7899 T-147 P 025/027 F-754 <br /> Lancaster Laboratories <br /> • Where qualftyis a science <br /> Page I of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number- 824403 <br /> Reported 10/04/02 at 04:30 PM <br /> Laboratory Comp1mance Quality Control <br /> Blank Blank Report LCs LCSD LCS/LCSD <br /> Aaal'Vals Name Result MDL Busts IREC 5RRC Lite RPn RPII-M% <br /> Batch number 02261ASIS Sample number(s) 3906850 3906854-3906856,39068583906859 <br /> TPH-GRO - Waters N D 50 ng/1 100 93 74.116 7 30 <br /> Batch number- 02270A51A Sample number(s) 3906851-3906B53 39D6B57 <br /> TP8-MRO - Maters N D 50 ug/1 91 95 74-116 4 30 <br /> Batch number- N022731AO Sample number(a) 3906850-3906859 <br /> Methyl t-butyl ether N D 5 ug/l 101 77-127 <br /> di-isopropyl ether N D 5 ug/l 100 74-125 <br /> Ethyl t-butyl ether N D 5 ug/1 97 74-120 <br /> t-Ai+y1 mothyl ether N D -5 ug/1 97 71-114 <br /> t-Butyl alcohol N D 5 ug/1 92 59-139 <br /> Benzene N b 5 ug/1 103 85-117 <br /> 1,2-Dachloroethane N-D 1 ug/1 102 77-132 <br /> Toluene N D 7 ug/1 103 85-115 <br /> 1,2-Dibromoethane N D 1 ug/1 101 81-114 <br /> Ethyibenzene N D 5 ug/1 106 82-119 <br /> Xylene (Total) N D a ug/l 107 84-120 <br /> Batch number- N022731AC Sample number(s) 3906853 <br /> Methyl t-butyl ether N D s ug/l 301 77-127 <br /> Sample Ma" rxx Quality Control <br /> his XSD US/n11=1 RPD BKG D" OUP Dup <br /> RPD <br /> Aaalvaxo Name 3cREC RE C! Lim,to RBD amQM2 Cone RPD Z6ax <br /> Batch number 02261A93B Sample number s) 3906850,3906854-3906856 3906858-3906859 <br /> TPH-,GRD - Waters 117 74-132 <br /> Batch number 02270ASIA Sample numbcr(s) 3906851-3906653 3906857 <br /> TPH-GRD - Waters 83 74-132 <br /> Batch number N022731AS Sample nil er(s) 3906850-3906859 <br /> Methyl t-butyl ether 98 99 69-134 1 30 <br /> da-lsopropyl ether 100 100 68-133 0 30 <br /> Ethyl t-butyl ether 97 99 73-123 2 30 <br /> t-Amyl methyl ether 98 97 69-118 1 30 <br /> t-Butyl alcohol 90 89 51-148 1 30 <br /> Benzene 109 107 78-134 2 30 <br /> 1,2-Dzchloroethane 105 102 73-136 3 30 <br /> Toluene 108 107 83-127 2 30 <br /> 1,2-Dxbromoethane 100 100 78-120 0 30 <br /> Sthylbenzene 111 110 82-134 1 30 <br /> Xylene (Total) 112 110 82-130 1 30 <br /> Batch number- 9022731AC Sample number W . 3906853 <br /> Methyl t-butyl ether 98 99 69-134 1 30 <br /> *-Outside of specification <br /> (1) The result for one or bold deternunat3om was less than five Ames the LOQ <br /> (2) The background result was more than four times the spike added <br /> i <br /> Lancaster Laboratories Int <br /> p( E rq a I✓ A 2A25 New Holland Pike <br /> Box 1 <br /> Lancaster.r.,PA PA 17605-242$ <br /> 717-556.2300 Fox.717-656-2681 2216 Rev 9111/00 <br />