All regulated activities and all activities that may affect stormwater runoff, including land development and earth disturbance activity, are subject to regulation by this Ordinance; and shall apply to all areas of the Township including the Tohickon Creek Watershed and Delaware River (North) Watershed (which includes Cooks Creek Watershed designated as Exceptional Value pursuant to Pennsylvania Chapter 93 Water Quality Standards) as delineated in Appendix B which is hereby adopted as part of this Ordinance.
This Ordinance shall apply to temporary and permanent stormwater management facilities constructed as part of any of the regulated activities listed in this section. Stormwater management and erosion and sedimentation control during construction activities that are specifically not regulated by this Ordinance, shall continue to be regulated under existing laws and ordinances.
This Ordinance contains stormwater management performance standards and design criteria that are necessary or desirable from a watershed-wide perspective. Stormwater management design criteria (e.g. inlet spacing, inlet type, collection system design and details, outlet structure design, etc.) shall continue to be regulated by applicable ordinances.
The following activities are defined as 'Regulated Activities' and shall be regulated by this Ordinance except as exempted by Section 105 of this Ordinance:
A. Addition of any impervious surface greater than 500 square feet within a Carbonate Geology Area.
B. Subdivision and Land Development.
C. Prohibited or polluted discharges.
D. Alteration of the natural hydrologic regime.
E. Construction of additional impervious surfaces (e.g. driveways, parking lots, etc.) and/or construction of new buildings or additions to existing buildings which cumulatively (refer Section 105.B) exceed 1,000 square feet in area (or 500 square feet in carbonate geology areas) and which result in additional impervious surface since the effective date of Stormwater Management Ordinance #121 on September 10, 2002.
F. Diversion or piping of any natural or man-made stream channel.
G. Installation of BMPs and stormwater management facilities or appurtenances thereto.
H. Temporary storage of impervious or pervious material (rock, soil, etc.) where ground contact exceeds five (5) percent of the lot area or 5,000 square feet (whichever is less), and where the material is placed on slopes exceeding eight (8) percent. (Based on PADEP stock piling regulations, maximum stock pile height is 35 feet with maximum side slopes of 2 to 1).
(Ord. 186, passed 9-12-2017)