A patch of CNG exactly on the same site where contractors sprayed CNG before. There was no follow-up monitoring or treatment. FoMM suggested to the land manager many times that treatment must be followed up with monitoring, follow-up spray, and - depending on size of patch - mulching and / or direct seeding native ground cover. Mapped with Field Maps / Untreated Weeds. Treatment of patches with dense highly invasive CNG without follow up is a waste of resources!