I live in Wisconsin, and sadly, you almost don't have to spin things anymore to make Walker & Co. look bad. The bare facts of what's going on are usually quite bad enough. I don't know anything about this particular story, but it might very likely be evidence of the larger problem, which is that as soon as he was in office, Walker started rewarding his cronies with plum government jobs, whether they were qualified for them or not. The current DNR secretary, who should be running things, doesn't know anything about the job and doesn't really care to learn. At least two people who formerly held the position have publicly taken issue with the way she runs the department. For instance, she arranged for a company doing serious amounts of illegal dumping -- which resulted in contaminated groundwater and at least 40 poisoned drinking wells -- to be investigated by state district attorneys instead of Department of Justice officials (the usual, recommended procedure) so that they would have to pay only the bare minimum of fines and would also not be required to pay for testing the groundwater in the area. The only reason any investigation happened in the first place was due to public outcry, not any of her efforts. Said company was a contributor to Walker's campaign, you see.
Having the DNR in his pocket has another very useful side effect for Walker -- they're not protesting the legislation the Republicans forced through allowing open-pit mining in the northern part of the state. There's a great deal of protest about the mines, but without the DNR's support, there's not much chance of stopping it, unfortunately. :(