CFR › Title 40 › Part 52 › §52.268440 CFR §52.2684Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)The requirements of § 51.214 and Appendix P of this chapter are not met since the plan does not contain sufficient regulations pertaining to continuous in-stack monitoring.