MISSOULA, Montana — The US Environmental Protection Agency has agreed to analyze samples from local rivers to see how much contamination is from wood-processing plants, including the Smurfit-Stone pulp mill site. During Thursday’s meeting of the Frenchtown Smurfit-Stone Citizens Advisory Group, a few group members hit the highlights of a brief tour of the Smurfit mill site they took with Congressman Ryan Zinke and his staff on Sept. 24. During the tour, Zinke was told about a new development where the EPA has agreed to have some of their “displaced scientists” analyze several years’ worth of fish-tissue and water data collected from the Clark Fork, Bitterroot and Blackfoot rivers. …However, Smurfit isn’t the only source of contamination. Wood-processing businesses exist in several places along the Clark Fork, Blackfoot and Bitterroot rivers, and they all likely pollute the rivers with dioxins, furans and dioxin-like PCB contaminants.