Delayed compliance order refers to an order issued by the Environmental Protection Agency (EPA). A delayed compliance order is also issued by a state agency to an existing source of pollutants, whereby the deadline for complying with an implementation plan is postponed.
A delayed compliance order is essentially an extension of time granted to a specific stationary pollution source to permit it to comply with certain national ambient air quality standards. [Public Serv. Co. v. United States Epa, 682 F.2d 626, 630 (7th Cir. Ind. 1982)].