Where a development site is located within the Agricultural
District (A) and has an implemented conservation plan verified by
the Conservation District, the submission of proof of the implemented
conservation plan shall be considered compliance with this chapter
for installation of impervious surface coverage where all of the following
criteria are met:
A. For a parent tract containing not less than 10.5 acres to 20 acres,
cumulative new impervious areas of 10,000 square feet or less if the
minimum distance between the proposed impervious area and/or SWM facility
discharge point to the downslope property line or downstream receiving
waters of the parent tract is at least 250 feet. In lieu of meeting
the minimum distance criteria, the applicant may provide documentation
from a qualified person that the stormwater flows from the parent
tract leave the parent tract in the same manner as the predevelopment
condition and that there will be no adverse effects to adjacent property
or that the flows reach a natural drainageway or existing SWM facility
before affecting adjacent property.
B. For a parent tract containing not less than 20 acres, cumulative
new impervious areas of 20,000 square feet or less if the minimum
distance between the proposed impervious area and/or SWM facility
discharge point to the downslope property line or downstream receiving
waters of the parent tract is at least 500 feet. In lieu of meeting
the minimum distance criteria, the applicant may provide documentation
from a qualified person that the stormwater flows from the parent
tract leave the parent tract in the same manner as the predevelopment
condition and that there will be no adverse effects to adjacent property
or that the flows reach a natural drainageway or existing SWM facility
before affecting adjacent property.
C. An applicant for processing under this §
190-42 shall provide the Township with information to demonstrate there shall be no disturbance of land within floodplains, wetlands, environmentally sensitive areas, riparian forest buffers, or slopes greater than 15%. Refer to Appendix A-2, Alternative Agricultural Process Application.
D. The alternate processing of agricultural applications (§
190-42) replaces the plan options of the exemption (§
190-41) and the small project (§
190-43) for properties in the Agricultural (A) District that use this alternative.
E. The alternative agricultural process application (refer to Appendix
A-2) shall be completed and submitted to the Township. Upon
receipt of a written approval from West Donegal Township the applicant
may proceed with the proposed improvements.
F. The Township may deny or revoke any approval pursuant to this section
at any time for any project that the Township believes may pose a
threat to public health, safety, property or the environment.
Applicants are encouraged to schedule a preapplication meeting
to review the overall stormwater management concept with Township
staff/engineer. The preapplication meeting is not mandatory and shall
not constitute formal filing of a plan with West Donegal Township.
Topics discussed may include the following:
A. Available geological maps, plans and other available data as provided
by the applicant.
B. Findings of the site analysis including identification of any environmentally
sensitive areas, wellhead protection areas, riparian corridors, hydrologic
soil groups, existing natural drainageways, karst features, areas
conducive to infiltration to be utilized for volume control, etc.
C. Results of infiltration tests.
D. Applicable Township Subdivision and Land Development and/or Zoning
Ordinance provisions.
E. The conceptual project layout, including proposed structural and
nonstructural BMPs.
Approval of a SWM site plan shall be valid for a period of one year unless extended by the Township. Any time extensions shall not exceed four additional for a total of five years. This time period shall commence on the date that the Township approves the SWM site plan. If a certificate of completion as required by §
190-52 has not been submitted within the specified time period, then the Township may consider the SWM site plan disapproved and may revoke any and all permits issued by the Township. SWM site plans that are considered disapproved by the Township may be resubmitted in accordance with Article
IV of this chapter.