§ 6.204 Categorical exclusions and extraordinary circumstances.

(a) A proposed action may be categorically excluded if the action fits within a category of action that is eligible for exclusion and the proposed action does not involve any extraordinary circumstances.

(1) Certain actions eligible for categorical exclusion require the Responsible Official to document a determination that a categorical exclusion applies. The documentation must include: A brief description of the proposed action; a statement identifying the categorical exclusion that applies to the action; and a statement explaining why no extraordinary circumstances apply to the proposed action. The Responsible Official must make a copy of the determination document available to the public upon request. The categorical exclusions requiring this documentation are listed in paragraphs (a)(1)(i) through (a)(1)(v) of this section.

(i) Actions at EPA owned or operated facilities involving routine facility maintenance, repair, and grounds-keeping; minor rehabilitation, restoration, renovation, or revitalization of existing facilities; functional replacement of equipment; acquisition and installation of equipment; or construction of new minor ancillary facilities adjacent to or on the same property as existing facilities.

(ii) Actions relating to existing infrastructure systems (such as sewer systems; drinking water supply systems; and stormwater systems, including combined sewer overflow systems) that involve minor upgrading, or minor expansion of system capacity or rehabilitation (including functional replacement) of the existing system and system components (such as the sewer collection network and treatment system; the system to collect, treat, store and distribute drinking water; and stormwater systems, including combined sewer overflow systems) or construction of new minor ancillary facilities adjacent to or on the same property as existing facilities. This category does not include actions that: involve new or relocated discharges to surface or ground water; will likely result in the substantial increase in the volume or the loading of pollutant to the receiving water; will provide capacity to serve a population 30% greater than the existing population; are not supported by the state, or other regional growth plan or strategy; or directly or indirectly involve or relate to upgrading or extending infrastructure systems primarily for the purposes of future development.