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BOS/COB 209-a6B-3694 p. 3 <br /> C A M B R I A <br /> TPHg and benzene were not detected in any of the other shallow monitoring wells. <br /> Methanol was detected in well MW-8 at a concentration of 28,900 ppb, but not in wells <br /> MW-5 and RW-lA. Groundwater samples collected from wells MW-5, MW-8, and <br /> RW-IA contained MTBE (by EPA Method 8260A) at concentrations ranging from <br /> 8,140 to 143,000 ppb. Wells MW-2, MW-4, and MW-6 contained MTBE (by EPA <br /> Method 8020) at concentrations ranging from 14.5 to 3,390 ppb. TAME was detected <br /> in wells MW-5 and RW-IA at concentrations of 3,020 and 2,370 ppb, respectively. <br />