§ 60.6530 What procedures and test methods must I use to stack test?
(a) Follow Table 5 to Subpart WWWW to establish the procedures and test methods, and other specific testing requirements for the different pollutants.
(b) Stack tests for all the pollutants must consist of at least three test runs, as specified in § 60.8, conducted under representative full load operating conditions. For particulate matter, opacity, cadmium, lead, mercury, hydrogen chloride, and dioxins/furans, use the arithmetic average of the pollutant emission concentrations from the three test runs to determine compliance with the applicable emission limits in Table 3 to Subpart WWWW. For fugitive ash, use the average duration of visible emissions per hour as calculated from three 1-hr observations to determine compliance with the emission limits in Table 2 to Subpart WWWW.
(c) Obtain an oxygen (or carbon dioxide) measurement at the same time as your pollutant measurements to determine diluent gas levels, as specified in § 60.6465.
(d) You may request that compliance with emission limits be determined using carbon dioxide measurements corrected to an equivalent of 7 percent oxygen. The relationship between oxygen and carbon dioxide levels for the affected facility shall be established as specified in § 60.6485.
(e) Use equation 1 in § 60.6680(a) to calculate emission levels at 7 percent oxygen (or an equivalent carbon dioxide basis). See the individual test methods in Table 5 to Subpart WWWW for other required equations.