e-CFR Navigation Aids


Simple Search

Advanced Search

 — Boolean

 — Proximity


Search History

Search Tips


Latest Updates

User Info


Agency List

Incorporation By Reference

eCFR logo

Related Resources

Electronic Code of Federal Regulations

We invite you to try out our new beta eCFR site at https://ecfr.federalregister.gov. We???ve made big changes to make the eCFR easier to use. Be sure to leave feedback using the Help button on the bottom right of each page!

e-CFR data is current as of August 7, 2020

Title 40Chapter ISubchapter CPart 63Subpart NNNNN → Appendix

Title 40: Protection of Environment
Subpart NNNNN—National Emission Standards for Hazardous Air Pollutants: Hydrochloric Acid Production

Table 3 to Subpart NNNNN of Part 63—Performance Test Requirements for HCl Production Affected Sources

As stated in §63.9020, you must comply with the following requirements for performance tests for HCl production for each affected source.

For each HCl process vent and each HCl storage tank and HCl transfer operation for which you are conducting a performance test, you must .  .  .Using .  .  .Additional Information .  .  .
1. Select sampling port location(s) and the number of traverse pointsa. Method 1 or 1A in appendix A to 40 CFR part 60 of this chapteri. If complying with a percent reduction emission limitation, sampling sites must located at the inlet and outlet of the control device prior to any releases to the atmosphere (or, if a series of control devices are used, at the inlet of the first control device and at the outlet of the final control device prior to any releases to the atmosphere); or
   ii. If complying with an outlet concentration emission limitation, the sampling site must be located at the outlet of the final control device and prior to any releases to the atmosphere or, if no control device is used, prior to any releases to the atmosphere.
2. Determine velocity and volumetric flow rateMethod 2, 2A, 2C, 2D, 2F, or 2G in appendix A to 40 CFR part 60 of this chapter.
3. Determine gas molecular weighta. Not applicablei. Assume a molecular weight of 29 (after moisture correction) for calculation purposes.
4. Measure moisture content of the stack gasMethod 4 in appendix A to 40 CFR part 60 of this chapter.
5. Measure HCl concentration and Cl2 concentration from HCl process ventsa. Method 26A in appendix A to 40 CFR part 60 of this chapteri. An owner or operator may be exempted from measuring the Cl2 concentration from an HCl process vent provided that a demonstration that Cl2 is not likely to be present in the stream is submitted as part of the site-specific test plan required by §63.9020(a)(2). This demonstration may be based on process knowledge, engineering judgment, or previous test results.
6. Establish operating limits with which you will demonstrate continuous compliance with the emission limits in Table 1 to this subpart, in accordance with §63.9020(e)(1) or (2).

[68 FR 19090, Apr. 17, 2003, as amended at 71 FR 17747, Apr. 7, 2006]

Need assistance?