The governing body of Harris Township finds that:
A.
Inadequate management of accelerated runoff of stormwater resulting
from development throughout a watershed increases runoff volumes,
flows and velocities, contributes to erosion and sedimentation, overtaxes
the carrying capacity of streams and storm sewers, greatly increases
the cost of public facilities to carry and control stormwater, undermines
floodplain management and flood control efforts in downstream communities,
reduces groundwater recharge, threatens public health and safety,
and increases nonpoint source pollution of water resources.
B.
A comprehensive program of stormwater management (SWM), including
reasonable regulation of development and activities causing accelerated
runoff, is fundamental to the public health, safety, and welfare and
the protection of people of the commonwealth, their resources, and
the environment.
C.
Stormwater is an important water resource that provides groundwater
recharge for water supplies and supports the base flow of streams.
D.
The use of green infrastructure and low impact development (LID)
are intended to address the root cause of water quality impairment
by using systems and practices which use or mimic natural processes
to: 1) infiltrate and recharge, 2) evapotranspire, and/or 3) harvest
and use precipitation near where it falls to earth. Green infrastructure
practices and LID contribute to the restoration or maintenance of
predevelopment hydrology.
E.
Federal and state regulations require certain municipalities to implement
a program of stormwater controls. These municipalities are required
to obtain a permit for stormwater discharges from their separate storm
sewer systems under the National Pollutant Discharge Elimination System
(NPDES) program.