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 limitation a. Demonstrate CO or THC emissions are 20 ppmvd or less over each 4- hour rolling averaging period i. Collecting the CPMS data according to § 63.9306(a), reducing the measurements to 1-hour averages used to calculate the 3-hr block average; or ii. Collecting the CEMS data according to § 63.9307(a), reducing the measurements to 1-hour averages, correcting them to 15 percent O 2 content, dry basis, according to § 63.9320. 2. CO or THC percent reduction emission limitation a. Demonstrate a reduction in CO or THC of 96 percent or more over each 4-hour rolling averaging period i. 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 O 2 content, dry basis, calculating the CO or THC percent reduction according to § 63.9320. [68 FR 28785, May 27, 2003, as amended at 85 FR 34345, June 3, 2020]