Section 63.1385 - Test methods and procedures(a) The owner or operator shall use the following methods to determine compliance with the applicable emission limits:(1) Method 1 ( 40 CFR part 60, appendix A) for the selection of the sampling port location and number of sampling ports;(2) Method 2 ( 40 CFR part 60, appendix A) for volumetric flow rate;(3) Method 3 or 3A ( 40 CFR part 60, appendix A) for O2 and CO2 for diluent measurements needed to correct the concentration measurements to a standard basis;(4) Method 4 ( 40 CFR part 60, appendix A) for moisture content of the stack gas;(5) Method 5 or Method 29 ( 40 CFR part 60, appendix A-3) for the concentration of total PM. When using Method 5, each run must consist of a minimum sample volume of 2 dry standard cubic meters (dscm). When using Method 29, each run must consist of a minimum sample volume of 3 dscm. When measuring PM concentration using either Method 5 or 29, the probe and filter holder heating system must be set to provide a gas temperature no greater than 120±14 °C (248±25 °F).(6) For measuring the concentration of formaldehyde, use one of the following test methods: (i) Method 318 (appendix A of this part). Each test run must consist of a minimum of 10 spectra.(ii) Method 316 (appendix A of this part). Each test run must consist of a minimum of 2 dry standard cubic meters (dscm) of sample volume.(7) Method contained in appendix A of this subpart for the determination of product LOI;(8) Method contained in appendix B of this subpart for the determination of the free-formaldehyde content of resin. The owner or operator shall use vendor specifications to determine the free-phenol content of resin.(9) Method contained in appendix C of this subpart for the determination of product density;(10) For measuring the concentration of phenol, use Method 318 (appendix A of this part). Each test run must consist of a minimum of 10 spectra.(11) For measuring the concentration of methanol, use one of the following test methods: (i) Method 318 (appendix A of this part). Each test run must consist of a minimum of 10 spectra.(ii) Method 308 (appendix A of this part). Each test run must consist of a minimum of 2 hours.(12) Method 29 ( 40 CFR part 60, appendix A-8) for the concentration of chromium compounds. Each test run must consist of a minimum sample volume of 3 dscm.(13) An alternative method, subject to approval by the Administrator.(b) Each performance test shall consist of 3 runs. The owner or operator shall use the average of the three runs in the applicable equation for determining compliance.64 FR 31709, June 14, 1999, as amended at 80 FR 45335, July 29, 2015; 82 FR 60885, Dec. 26, 2017