---
kind: "section"
citation: "40 C.F.R. § 63.1385"
title: "40"
number: "63.1385"
heading: "Test methods and procedures."
url: "https://uscodex.org/cfr/40/63.1385"
---

# §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](/cfr/40/part60.md), appendix A) for the selection of the sampling port location and number of sampling ports;
  - (2) Method 2 ([40 CFR part 60](/cfr/40/part60.md), appendix A) for volumetric flow rate;
  - (3) Method 3 or 3A ([40 CFR part 60](/cfr/40/part60.md), 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](/cfr/40/part60.md), 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.

## Notes

### Amendments

[64 FR 31709, June 14, 1999, as amended at 80 FR 45335, July 29, 2015; 82 FR 60885, Dec. 26, 2017]

### Source

Source: 64 FR 31709, June 14, 1999, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

### Amendments

[64 FR 31709, June 14, 1999, as amended at 80 FR 45335, July 29, 2015; 82 FR 60885, Dec. 26, 2017]