Methods of measurement

1. The reference methods in appendix A to chapter 33.1-15-12, its replacement or other methods, as approved by the department shall be used to determine compliance with sections 33.1-15-05-01 and 33.1-15-05-02 as follows: a. Method 1 for selection of sampling site and sample traverses. b. Method 2 for determination of stack gas velocity and volumetric flow rate. c. Method 3 for gas analysis. d. Method 4 for determination of moisture in the stack gas. e. Method 5 for concentration of particulate matter and the associated moisture content. The sampling time for each run shall be at least sixty minutes and the minimum sampling volume shall be thirty dry cubic feet at standard conditions [0.85 dry cubic meter at standard conditions] except that smaller sampling times or volumes when necessitated by process variables or other factors may be approved by the department. (1) For each run using method 5 for fuel burning equipment, the emissions expressed in pounds per million British thermal units [nanograms per joule] shall be determined by the following procedures: E = CFd ( 20.9 ) or E = CFc ( 100 ) 20.9 - %O2 %CO2 where: (a) E = pollutant emission, lb/million Btu [ng/j]. (b) C = pollutant concentration, lb/dscf [ng/dscm]. (c) %O2 = oxygen content by volume, dry basis. (d) %CO2 = carbon dioxide content by volume, dry basis. The percent oxygen and percent carbon dioxide shall be determined by using the integrated or grab sampling and analysis procedures of method 3, 3A, 3B, or 3C, as appropriate, by traversing the duct at the same sampling locations used for each run of method 5. (e) Fd and Fc = factors as listed in method 19 appendix A of chapter 33.1-15-12. (2) For each run using method 5 for industrial processes, the emission rate expressed in pounds per hour shall be determined by the equation lb/hr = (Qs) (c) where: Qs = volumetric flow rate of the total effluent in dscf/hr and c = particulate concentration in lb/dscf. 2. The heat content of fuels shall be determined in accordance with A.S.T.M. methods D2015-66(72) (solid fuels), D240-64(73) (liquid fuels), or D1826-64(70) (gaseous fuels), as applicable. 3. The determination of particulate matter emissions with an aerodynamic diameter less than or equal to ten micrometers [PM10] and particulate matter emissions with an aerodynamic diameter less than or equal to two and one-half micrometers [PM2.5] must be made in accordance with the methods established in 40 Code of Federal Regulations part 51, appendix M, as applicable.