Non-Agricultural Source Material, or NASM, is treated and recycled material from non-agricultural sources, like leaf and yard waste, fruit and vegetable peels, food processing waste, pulp and paper biosolids and sewage biosolids, that is applied to agricultural land to provide a beneficial use. A full list of materials that are considered NASM can be found in Schedule 4 of the Nutrient Management Regulation.
NASM does not include compost that meets the standards for Category AA or A outlined in Part II of the Ontario Compost Quality Standards. It also does not include untreated septage or commercial fertilizers.
The regulation, under the Nutrient Management Act, 2002, provides the rules for the storage, sampling, analysis and land application of NASM.