StacksVerified U.S. regulatory reference

40 CFR §63.5998

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
For each operating parameter that you are required by § 63.5997(e)(1) to monitor, you must install, operate, and maintain a continuous parameter monitoring system according to the provisions in § 63.5995(a) through (e).