B.C. Air Quality

Audit Standards

The Ministry of Environment follows procedures set out by the National Air Pollution Surveillance Network and the United States Environmental Protection Agency, as appropriate for station operation.

In auditing operational monitors, the audit team uses certified gasses and instruments that have been calibrated to a primary standard. Monitors that fail an audit also fail Ministry quality assurance requirements, and therefore, the data from failed monitors is unacceptable for use by the Ministry.

Effective January 1, 2009, the standard audit criteria for continuous emission monitors and ambient air monitoring instruments have been harmonized with the standards recently updated by the United States Environmental Protection Agency.

The new criteria are detailed in the Ministry of Environment's Standard Audit Procedure for Continuous Emission Monitors and Ambient Air Monitoring Instruments Procedure 2.10, Version 2.16 (PDF: 168 KB/24 pages).

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