Note: You may need to download the full Title 40 ZIP and extract Part 51. đź“ť Long Review: 40 CFR Part 51
You can access the text version of the Electronic Code of Federal Regulations (eCFR) directly: : 40 CFR Part 51 Download Part51 txt
(like Appendix W for modeling or Appendix M for test methods) Note: You may need to download the full