Source emission monitoring
Approvals have two types of in-stack emission monitoring requirements. Manual stack surveys are usually short duration tests. Effluent samples are collected from the stack by trained personnel in accordance with the Alberta Stack Sampling Code (periodically updated).
Facilities that emit large volumes of substances must carry out continuous emission monitoring with proven technology. The monitoring instruments are permanently installed on the stack and measurements are carried out year-around in accordance with the Alberta Continuous Emission Monitoring System code.
Volatile organic compounds can be emitted from leaking process equipment and piping. These are commonly termed fugitive emissions. Industries, especially organic chemical plants, are required through their approvals to implement monitoring that will detect leaks of such compounds. Prompt repairs or replacement are required and must be reported to Alberta Environment.
Where emission rates are small and/or field test methods do not exist, source emissions can be estimated by mass balances, with periodic testing of the concentration of pollutants. This information may be subject to reporting to Alberta Environment.