All sides in a complex dispute over a massive construction landslide south of Coos Bay have reached a settlement that clears the way for hundreds of tons of mud, rock, tree limbs and other debris to be cleared from a big water­way that’s home to federally protected coho salmon and green sturgeon. Under the deal, two insurance companies would kick in a total of $700,000 toward the cleanup, restoration and subsequent monitoring, according to the proposed consent decree filed Friday in U.S. District Court in Eugene.