It is beyond the pale to ignore the possibility of overturning the ecological machine of Chugach State Park (or any natural area) by intentionally introducing invasive plants. I use "intentionally" since Park managers should be bright enough (the world is FULL of examples of large scale changes due to thoughtless releases of "invasives") to insist on clean fill and top soil (and don't forget residues on those vehicles from other jobs). Those managers SHOULD have a basic education and continue to educate themselves on such topics, as one of their job pre-requisites (in my observation, the curriculum starts in grade school; post, right Ben?).