[Ord. 252, 5/24/2004, § 101]
1. The Borough Council of Dublin Borough finds that:
A. Inadequate management of accelerated stormwater runoff resulting
from development throughout a watershed increases flood flows and
velocities, contributes to erosion and sedimentation, overtaxes the
carrying capacity of existing streams and storm sewers, greatly increases
the cost of public facilities to convey and manage stormwater, undermines
floodplain management and flood reduction efforts in upstream and
downstream communities, reduces groundwater recharge and threatens
public health and safety.
B. A comprehensive program of stormwater management, including reasonable
regulation of development and activities causing accelerated erosion,
is fundamental to the public health, safety, welfare, and the protection
of the people of the Borough and all the people of the commonwealth,
their resources, and the environment.
[Ord. 252, 5/24/2004, § 102]
1. The purpose of this chapter is to promote health, safety, and welfare within the Tohickon Creek Watershed by minimizing the damages described in §
25A-101, Subsection 1A, of this chapter through provisions designed to:
A. Manage accelerated runoff and erosion and sedimentation problems
at their source by regulating activities that cause these problems.
B. Utilize and preserve the existing natural drainage systems.
C. Encourage recharge of groundwater where appropriate and prevent degradation
of groundwater quality.
D. Maintain existing flows and quality of streams and watercourses in
the Borough and the commonwealth.
E. Preserve and restore the flood-carrying capacity of streams.
F. Provide proper maintenance of all permanent stormwater management
facilities that are constructed in the Borough.
G. Provide performance standards and design criteria for Borough-wide
stormwater management and planning.
[Ord. 252, 5/24/2004, § 103]
The Borough is empowered to regulate land use activities that
affect runoff by the authority of the Act of October 4, 1978, 32 P.S.
§ 1, 1 P.L. 864 (Act 167) § 680.1 et seq., as
amended, the "Storm Water Management Act" and the Pennsylvania Borough
Code.
[Ord. 252, 5/24/2004, § 104]
1. Any landowner or any person engaged in the alteration or development
of land which may affect stormwater runoff characteristics shall implement
such measures consistent with the provisions of the Tohickon Creek
watershed stormwater plan.
2. This chapter shall apply to all areas of the Borough that are located
within the Tohickon Creek Watershed, as delineated in Appendix D,
attached and made a part hereof.
[Ord. 252 5/24/2004, § 105]
Any regulated activity that meets the following exemption criteria is exempt from the requirements of §
25A-303, Subsection
1, of this chapter. This exemption does not relieve the landowner or developer from complying with water quality and groundwater recharge standards under §
25A-303, Subsection
3, and the special requirements under §
25A-304, Subsection
12, for areas within exceptional value and high quality sub-watersheds. Further, this exemption shall not relieve the applicant from implementing such measures as are necessary to protect health, safety, and property.
Stormwater Management Exemption Criteria*
|
---|
Total Parcel size
(acres)
|
Minimum Setback Distance**
(feet)
|
Impervious Area Exemption
(square feet)
|
---|
0 - 0.5
|
10
|
1,200
|
0.5 - 1
|
50
|
2,500
|
1 - 2
|
100
|
4,000
|
2 - 5
|
250
|
5,000
|
5
|
500
|
7,500
|
*
|
This exemption is cumulative such that it applies only once
to a tract, and if the exemption amount is exceeded, it is not applicable
and all previously exempted impervious areas must be managed.
|
**
|
The minimum setback distance is measured between the proposed
impervious area and/or stormwater control/structure/discharge point
to the downslope property boundary. In lieu of meeting the minimum
distance criteria, the applicant may provide documentation for Township
approval from any professional authorized to perform this work under
the Engineer, Land Surveyor, and Geologist Registration Law, May 23,
1945, P.L. 913, No. 367, (63 P.S. § 148 et seq., P.L. 913,
as amended) that the increased flows from the site leaves the site
in the same manner as the predevelopment condition, and that there
will be no adverse effects to the property along the path of the flow(s)
or that increased flow(s) will reach a natural watercourse or an existing
stormwater management structure before adversely affecting any property
along the path of the flow(s).
|
[Ord. 252, 5/24/2004, § 108]
Approvals issued pursuant to this chapter do not relieve the
applicant of the responsibility to secure required permits or approvals
for activities regulated by any other applicable code, rule, act,
or ordinance.