StacksVerified U.S. regulatory reference

40 CFR §63.1189

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
You must use the following test methods to determine compliance with the applicable emission limits:
  1. (a)Method 1 in appendix A to part 60 of this chapter for the selection of the sampling port locations and number of sampling ports.
  2. (b)Method 2 in appendix A to part 60 of this chapter for stack gas velocity and volumetric flow rate.
  3. (c)Method 3 or 3A in appendix A to part 60 of this chapter for oxygen and carbon dioxide for diluent measurements needed to correct the concentration measurements to a standard basis.
  4. (d)Method 4 in appendix A to part 60 of this chapter for moisture content of the stack gas.
  5. (e)Method 5 in appendix A to part 60 of this chapter for the concentration of PM. Each PM test run must consist of a minimum run time of three hours and a minimum sample volume of 3.75 dscm (135 dscf).
  6. (f)Method 10 in appendix A to part 60 of this chapter for the concentration of CO, using the continuous sampling option described in section 7.1.1 of the method. Each CO test run must consist of a minimum run time of one hour.
  7. (g)Method 318 at 40 CFR part 60, appendix A to this part for the concentration of formaldehyde, phenol, methanol, and carbonyl sulfide.
  8. (h)Method to determine the free-formaldehyde content of each resin lot in appendix A of this subpart.
  9. (i)Method 26A or 320 at 40 CFR part 60, appendix A to this part for the concentration of hydrogen fluoride and hydrogen chloride.