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CAMBRIA 0 <br /> Table 1 Additional Groundwater Analytical Data,Shell-branded(Independent)Service Station,1071 North Main Street,Manteca,California <br /> Sample Date Ethanol TBA DIPE EDB 12-DCA ETBE TAME Methanol MTBE 8020 MTBE 8266 <br /> ID Sampled (Irg/1) (14gA) (µg/1) (u€!1) (ug1l) (ugn) (8811) (AgA) (uSd) (PSA) <br /> MW 3 28 Apr 98 <500 <I00 <2 0 NA NA <20 <2 0 <1000 63 69 <br /> MW 3 28 Jul-98 <500 <100 <2 0 <0 50 <0 50 <20 <2 0 <1000 44 45 <br /> MW 3 07 Oct-98 <500 <100 <20 <0 50 <0 50 <20 <2 0 <1 000 11 97 <br /> MW-3 28 Jan-99 <500 <100 <2 0 <0 50 <0 50 <20 <2 0 <2 000 <2 5 <20 <br /> MW-3 08-Apr 99 <100 <20 0 <1 00 <0 500 <0 500 <100 <100 <1,000 <5 00 230 <br /> MW 3 22 Jul 99 <500 <100 <2 00 <0 500 <0 500 <2 00 <2 00 <1,000 449 343 <br /> MW 3 13-Oct 99 <500 <100 <2 00 4 500 <0 500 <2 00 <2 00 <l 000 <2 50 <2 00 <br /> MW 3 06-Jan 00 <1000 <200 <2 00 <0 500 <0 500 <2 00 <2 00 <1 000 <2 50 <2 00 <br /> y MW-3 11 Apr-00 <200 <200 <100 <1 00 <100 <100 <100 <1,000 468 176 <br /> f MW 3 27 Jul 00 <400 <20 0 <1 00 <1 00 <0 500 <1 00 <1 00 <I 000 <2 50 <1 00 <br /> MW 3 10-Oct-00 <2 000 <400 <20 0 <10 0 <100 <20 0 <20 0 <l 000 472 350 <br /> MW 3 23 Jan 01 <0 60 230 <0 60 NA <0 60 <0 60 068 <60 NA 340 <br /> MW 3 26 Apr 01 <500 <200 <5 00 <5 00 <5 00 <5 00 <5 00 NA NA <5 00 <br /> MW 3 11 Jul-01 <500 110 <20 <2 0 <2 0 <20 <2 0 <1000 NA 150 <br /> MW-3 25-Oct 01 <500 <50 <20 <2.0 Q 0 <2 0 <7_0 NA NA <0 50 <br /> Abbreviations and Notes <br /> NA=Not analyzed or not available <br /> <x=Not detected at method detection limit of x <br /> µgA=Micrograms per liter(parts per billion) <br /> 12 DCA=1 2-dichloroethane by EPA Method 8010 or equivalent <br /> EDB=Ethylene dibrorntde(1 2 dibmmoethane)by EPA Method 8010 or equivalent <br /> MTBE=Methyl tent butyl ether by EPA Methods 8020 and 8260 as indicated <br /> TB A=Tert butyl alcohol(t bumaot)by EPA Method 8260 <br /> DIVE=Di isopropyl ether by EPA Method 8260 <br /> ETBE= Ethyl tert butyl ether by EPA Method 8260 <br /> TAME=Tert amyl methyl ether by EPA Method 8260 <br /> dup=Duplicate sample <br /> a=Sample re analyzed past hold time results should be considered estimates <br /> Methanol by modified EPA Method 8015 or equivalent <br /> Ethanol and t Butanol by EPA Method 8260 <br /> 0323 Page 2 of 2 <br />