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A waste audit is a study relating to waste management that results in a written report either on a Ministry of Environment (MOE) form, or in the same format as the MOE form. The form must be signed by an authority at the facility (such as a building manager or project manager) who certifies that the information contained in the report is complete and correct, and that the facility complies with all requirements of O. Reg. 102/94
The waste audit must address the amount, nature and composition of waste, and the manner by which it is produced. The extent to which materials or products (used or sold) consist of recycled or reused material must also be addressed. The waste audit must also assess management policies and decisions related to the production of waste, such as procurement policies and specifications for raw materials, supplies and equipment. The audit reviews the reasons for the policies, states how their modification can facilitate 3Rs actions, and assists the generator in identifying opportunities to introduce 3Rs activities.
If the designated waste generator is responsible for several establishments with similar activities, a single waste audit can be conducted at one site and the data can be extrapolated and applied to the other establishments.The initial waste audit must be updated annually. However, construction and demolition projects must have a waste audit conducted even before the project begins. The results of all waste audits must be kept on file for five years
Information on how to conduct a waste audit is provided by Government of Ontario at
http://www.ene.gov.on.ca/envision/gp/2480e.pdf
Guide to conducting a school waste audit is available at http://www.wrwcanada.com/02wasteauditS.htm