Читать книгу Continuous Emission Monitoring - James A. Jahnke - Страница 49

Quality assurance programs were not required for CEM systems in the implementing rules promulgated by EPA in the 1970s and early 1980s. After the initial certification was achieved by passing the performance specification tests, no further testing was required, unless requested by the agency for special circumstances. It was not until the 1980s that EPA proposed minimum quality assurance procedures for SO₂, NO_x, and diluent monitoring systems in Appendix F to 40 CFR 60 (U.S. EPA 2020e). This rule was promulgated in 1987 and is today known as Procedure 1 of Appendix F. Other procedures were added to Appendix F as continuous monitoring requirements extended to the measurement of other pollutants, such as mercury and hydrochloric acid. However, quality assurance procedures for opacity monitors were not published until 2014 (U.S. EPA 2014a) although opacity monitors have been required at certain facilities since 1973.