This chapter shall be known and may be cited as the "Butler Township Stormwater Management Ordinance."
The purpose of this chapter is to promote health, safety, and welfare within Butler Township, Butler County, by minimizing the harms and maximizing the benefits to the citizens of Butler Township and surrounding communities through provisions intended to:
A. 
To the extent practicable, meet legal water quality requirements under state law, including regulations at 25 Pa. Code Chapter 93 to protect, maintain, reclaim, and restore the existing and designated uses of the waters of the commonwealth.
B. 
Manage accelerated runoff and erosion and sedimentation problems close to their source, by regulating activities that cause these problems.
C. 
Preserve the natural drainage systems as much as possible.
D. 
Maintain groundwater recharge, to prevent degradation of surface and groundwater quality, and to otherwise protect water resources.
E. 
Maintain existing flows and quality of streams and watercourses.
F. 
Preserve and restore the flood-carrying capacity of streams and prevent scour and erosion of stream banks and streambeds.
G. 
Manage stormwater impacts close to the runoff source, with a minimum of structures and a maximum use of natural processes.
H. 
Provide procedures, performance standards, and design criteria for stormwater planning and management.
I. 
Provide proper operations and maintenance of all temporary and permanent stormwater management facilities and best management practices (BMPs) that are constructed and implemented.
J. 
Provide standards to meet the NPDES permit requirements.
Primary authority. Butler Township is empowered to regulate these activities by the authority of the Act of October 4, 1978, P.L. 864 (Act 167), 32 P.S. § 680.1 et seq., as amended, the "Stormwater Management Act," and the First Class Township Code, 53 P.S. § 55101 et seq., as amended.
A. 
In Butler Township, all regulated activities and all activities that may affect stormwater runoff, including land development and earth disturbance activity, are subject to regulation by this chapter.
B. 
Earth disturbance activities and associated stormwater management controls are also regulated under existing state law and implementing regulations. This chapter shall operate in coordination with those parallel requirements; the requirements of this chapter shall be no less restrictive in meeting the purposes of this chapter than state law.
C. 
"Regulated activities" are any earth disturbance activities or any activities that involve the alteration or development of land in a manner that may affect stormwater runoff. "Regulated activities" include, but are not limited to, the following listed items:
(1) 
Earth disturbance activities.
(2) 
Land development.
(3) 
Subdivision.
(4) 
Construction of new or additional impervious or semipervious surfaces.
(5) 
Construction of new buildings or additions to existing buildings.
(6) 
Installation of stormwater management facilities or appurtenances thereto.
D. 
See § 242-12 of this chapter for exemption/modification criteria.
Approvals issued and actions taken pursuant to this chapter do not relieve the applicant of the responsibility to comply with or to secure required permits or approvals for activities regulated by any other applicable codes, laws, rules, statutes, or ordinances. To the extent that this chapter imposes more rigorous or stringent requirements for stormwater management, the specific requirements contained in this chapter shall be followed.
Any landowner or any person engaged in the alteration or development of land which may affect stormwater runoff characteristics shall, unless an exemption is granted, implement such measures as are required by this chapter to prevent injury to health, safety, or other property. Such measures also shall include actions as are required to manage the rate, volume, direction, and where practicable quality of resulting stormwater runoff in a manner which otherwise adequately protects health, property, and water quality.
A. 
Neither the granting of any approval under this chapter, nor the compliance with the provisions of this chapter, or with any condition imposed by a municipal official hereunder, shall relieve any person from any responsibility for damage to persons or property resulting therefrom, or as otherwise imposed by law nor impose any liability upon the municipality for damages to persons or property.
B. 
The granting of a permit which includes any stormwater management facilities shall not constitute a representation, guarantee or warranty of any kind by the municipality, or by an official or employee thereof, of the practicability or safety of any structure, use or other plan proposed, and shall create no liability upon or cause of action against such public body, official or employee for any damage that may result pursuant thereto.
Design standards and criteria for the construction of certain stormwater management facilities should comply with the specifications of Appendix B, Butler Township Standard Details — Stormwater Management, attached to this chapter. The Butler Township Board of Commissioners by resolution may from time to time change the specifications. In their sole discretion, the Township Engineer and the Zoning Officer may approve modifications to the design standards.