On Tuesday, Scott Blado found good news as he dipped scientific instruments below the ice on the Big Eau Pleine Reservoir in Marathon County. “Right now, we’re seeing [a reading of] 10.9 dissolved oxygen, which is fantastic. We couldn’t ask for anything better than that at this time of the year,” said Blado, an environmental specialist for the Wausau-based Wisconsin Valley Improvement Company (WVIC). Blado tests multiple points on the reservoir every week, and on Tuesday, he saw a significant