Regulations last checked for updates: Apr 30, 2025

Title 40 - Protection of Environment last revised: Nov 30, 2025
§ 142.21 - State consideration of a variance or exemption request.

A State with primary enforcement responsibility shall act on any variance or exemption request submitted to it, within 90 days of receipt of the request.

source: 41 FR 2918, Jan. 20, 1976, unless otherwise noted.
cite as: 40 CFR 142.21