Frustrated and out of options: Missoula Co. presses EPA for better Smurfit testing Missoula County photo Before the mill was built several side channels and oxbows crisscrossed the floodplain between large stands of cottonwood trees on the north side of the river. and last updated 2021-02-19 14:07:55-05 MISSOULA â Voicing frustration and lacking options, Missoula County on Thursday sent a letter to the U.S. Environmental Protection Agency, the stateâs congressional delegation and the governor, citing concerns over the lack of progress and adequate testing at the former Smurfit-Stone Container Mill. After whatâs proven to be a protracted process that has taken years, the county remains concerned that the risk to human and ecological health has not been adequately addressed in the EPAâs assessment of former pulp and paper mill.