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TABLE 2 SUMMARY OF ANALYTICAL RESULTS - GROUNDWATER FAYETTE MANUFACTURING SITE TRACY,CA (Page 1 of 21 POTENTIAL CONTAMINANTS OTHER GEOCHEMICAL PARAMETERS Sampte Date TPHg B T E X MTBE DO CO, DFI N S TA Eh ID ug/ ug/ uglL uglL uglL uglL mglL mglL mg1L mglL m9 mglL mV M W 1 7/21195 <50 <0.5 <0.5 <0.5 <0.5 -- - -- -.. _ 10/23/95 <50 <0.5 <0.5 <0.5 <0.5 - - - -- - -- - - 1125l96 <50 <0.5 <0.5 <0.5 <0.5 - - -- - -- - - - 4122196 <50 <OS <0.5 <0.5 <0.5 - - - - -- -- - - 9125196 <50 <0.3 <0.3 <0.3 <0.6 <1.0 1.7 41 <0.05 29 180 430 170 12/16/96 <50 <0.3 <0.3 <0.3 <0.6 <1.0 1.8 36 <0.1 22 210 420 5 MW2 7121195 4800 150 240 110 410 - -- - - - - _ - 10l23195 4900 680 390 100 360 - - - - -- -- - - 1125196 3700 550 190 20 120 - -- - -- - - -- 4122196 670 120 70 7.9 42 -- - - - -- -- -. - 9125196 1300 260 120 25 68 7.6* 1.4 48 <0.05 23 198 420 10 12/16/96 2100 1,100 270 130 430 15** 1.2 45 <0.1 22 210 430 -10 MW3 7121195 920 81 23 40 140 - -- - -- - - - - 10/23/95 1500 290 <2.0 48 75 - - - -- -- - - -- 1125196 230 37 <0.5 2.9 1.3 -- -- - - -- - - 4122196 150 49 <0.5 4.8 <0.5 -- -- -- - - - - 9l25196 80 38 <0.3 1.5 <0.6 1.2* 1.2 45 <0.05 32 180 440 13 12/16/96 1 130 1 55 <1.5 3.2 2.2 1.1** 1.1 37 <0.1 25 210 420 -20 Notes: mg/L denotes milligrams per liter or parts per million DFI denotes dissolved ferrous iron uglL denotes micrograms per liter or parts per billion N denotes nitrate <denotes not detected at or above Stated Method Detection Limit S denotes sulfate -denotes not analyzed TA denotes total alkalinity denotes that MTBE has been confirmed by Method 8260 Eh denotes redox potential in millivolts(mV),field measured denotes MTBE detected by EPA Method 8020 only (fi-4 measurement during well purging process) TPHg denotes total petroleum hydrocarbons as gasoline(EPA Method 35 50180 1 5) W A94420\TABLUBAL5 11/22/07] 4