25 Pa. Code § 111.1
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Act-The Stormwater Management Act (32 P. S. §§ 680.1-680.17).
Department-The Department of Environmental Resources of the Commonwealth.
Designated watershed-A watershed delineated by the Department and approved by the Environmental Quality Board for which counties are required to develop a watershed stormwater management plan.
Municipality-A city, borough, town or township, or a county or other governmental unit when acting as an agent thereof, or a combination thereof acting jointly.
Scope of study-A detailed statement which establishes procedures to be used to prepare the detailed watershed stormwater plan, including a description of work, time schedule, level of effort, cost estimates and narratives related to preparation of plan elements required by section 5 of the act (32 P. S. § 680.5) and consistent with Chapter 3 of the Stormwater Management Guidelines.
Stormwater Management Guidelines-A Department publication prepared under section 14 of the act (32 P. S. § 680.14) which provides guidance to counties, watershed plan advisory committees, municipalities, the professions and the general public in the preparation of watershed stormwater plans.
Watershed stormwater plan-A plan for stormwater management developed and adopted by a county under section 5 of the act (32 P. S. § 680.5) and the Stormwater Management Guidelines.
25 Pa. Code § 111.1