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  1. Symbols
  2. Acknowledgements
  3. Note of appreciation
  4. Standards of service to the public
  5. Copyright


The following standard symbols are used in Statistics Canada publications:

not available for any reference period
not available for a specific reference period
not applicable
true zero or a value rounded to zero
value rounded to 0 (zero) where there is a meaningful distinction between true zero and the value that was rounded
suppressed to meet the confidentiality requirements of the Statistics Act
use with caution
too unreliable to be published
significantly different from reference category (p < 0.05)


The contributions of survey respondents were critical to the successful completion of this publication and are gratefully acknowledged.

This report was prepared by the Environment Accounts and Statistics Division under the direction of Rob Smith, Director and John Marshall, Chief, Environmental Protection Accounts and Surveys. Data collection for this survey was conducted by the Collection Planning and Management Division (Duncan Wrighte, Director) and the Environment Accounts and Statistics Division.

Sheri Vermette, Analyst, Environment Protection Accounts and Surveys, managed the project.

Major contributions to the project were made at various times by:

  1. Peter Van Wesenbeeck
  2. Marc Lavergne
  3. Don Grant
  4. Iman Mustapha
  5. Laurie Jong
  6. Michelle Tait

Note of appreciation

Canada owes the success of its statistical system to a long-standing partnership between Statistics Canada, the citizens of Canada, its businesses, governments and other institutions. Accurate and timely statistical information could not be produced without their continued cooperation and goodwill.

Standards of service to the public

Statistics Canada is committed to serving its clients in a prompt, reliable and courteous manner. To this end, Statistics Canada has developed standards of service that its employees observe.


Published by authority of the Minister responsible for Statistics Canada

© Minister of Industry, 2012

All rights reserved. Use of this publication is governed by the Statistics Canada Open License Agreement:

December 2012

Catalogue no. 16F0006X

ISSN 1701-6282

Frequency: Biennial


Environment Accounts and Statistics Division

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