Part 75 Emissions Monitoring Technical Questions and Answers
The Part 75 Emissions Monitoring Technical Q&A (formerly referred to as the Policy Manual) is a series of technical questions and answers (Q&As). These Q&As are intended to answer frequently asked questions and ensure that the monitoring requirements of 40 CFR part 75 (Part 75) are applied consistently. EPA will issue new or revised Q&As as they arise. If, after reviewing the regulations and these Q&As, you have additional questions, you should contact your Emission Monitoring Contact at EPA headquarters.
New and Revised Questions and Answers
| Question Number | Topic | New or Revised | Date |
|---|---|---|---|
| 6.6 | CO2 Mass Calculated According to Appendix G Equation G-4 | New | April 14, 2022 |
| 7.14 | Testing requirements for like-kind analyzers used more than 720 hours | New | September 28, 2020 |
| 8.15 | RATA load requirements for common stacks | Revised | September 25, 2019 |
| 9.34 | Use of EPA Protocol Gas Components for Calibration | Revised | September 20, 2022 |
| 13.18 | Minimum data acquisition and handling system requirements for units reporting using the low-mass emitter (LME) methodology | Revised | April 24, 2019 |
| 23.21 | Establishment of the fuel flow-to-load ratio test baseline | New | September 28, 2020 |
| 23.22 | Fuel flowmeter minimum data capture requirements | New | September 28, 2020 |
| 23.23 | Multi-hole orifice plates | New | September 28, 2020 |
| 27.22 | Startups, shutdowns, and partially controlled hours in the low-mass emitter (LME) methodology | New | September 28, 2020 |
Please note that the information in these Q&As provides clarification only; it cannot create any rights enforceable by any party in litigation with the United States. EPA may decide to follow the clarification provided in this document, or to act at variance with this clarification, based on its analysis of the specific facts presented.