Zero Waste Achivement
"Show your support for zero waste by completing a total of 10 deliveries of the Dumpster Bins and Paper Waste cargoes to the Waste Transfer Stations in Montana, and at least one Garbage Truck cargo to or from anywhere in Montana"
You can find the cargoes if you type it in the search bar. The company for the "Dumpster", "Waste Paper" and "Garbage Truck" is called 'Municipal Waste Management'. You need to deliver at least one of every kind.