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Electronic Code of Federal Regulations

e-CFR data is current as of December 11, 2019

Title 40Chapter ISubchapter CPart 63Subpart PPPPP → Appendix


Title 40: Protection of Environment
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES (CONTINUED)
Subpart PPPPP—National Emission Standards for Hazardous Air Pollutants for Engine Test Cells/Stands


Table 5 to Subpart PPPPP of Part 63—Continuous Compliance With Emission Limitations

As stated in §63.9340, you must demonstrate continuous compliance with each emission limitation that applies to you according to the following table:

For the .  .  . You must .  .  . By .  .  .
1. CO or THC concentration emission limitationa. Demonstrate CO or THC emissions are 20 ppmvd or less over each 4-hour rolling averaging periodi. Collecting the CPMS data according to §63.9306(a), reducing the measurements to 1-hour averages; or
ii. Collecting the CEMS data according to §63.9307(a), reducing the measurements to 1-hour averages, correcting them to 15 percent O2 content, dry basis, according to §63.9320;
2. CO or THC percent reduction emission limitationa. Demonstrate a reduction in CO or THC of 96 percent or more over each 4-hour rolling averaging periodi. Collecting the CPMS data according to §63.9306(a), reducing the measurements to 1-hour averages; or
ii. Collecting the CEMS data according to §63.9307(b), reducing the measurements to 1-hour averages, correcting them to 15 percent O2 content, dry basis, calculating the CO or THC percent reduction according to §63.9320.

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