2009 NASM Odour Guide for
Ontario Regulation 267/03 made under the Nutrient Management
Part 2 - Introduction
O. Reg. 267/03, the "General" regulation made under the
Nutrient Management Act, 2002, sets out an odour classification
system for non-agricultural source materials (NASM) that are applied
to agricultural land. This guide sets out the 3 methods that can
be used to determine where a specific NASM fits within the odour
classification system including historical data, comparative and
empirical assessment and the professional judgment of ministry staff.
The regulation prescribes setback distances from dwellings, residential
areas and land with a commercial, community or institutional use
based on odour categories and application method. The odour category
also affects storage and handling requirements for OC3 NASM.