This chapter shall be known and may be cited as the "The City
of Lancaster Stormwater Management (SWM) Ordinance."
The Lancaster City Council 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 City of Lancaster and all the people of the commonwealth,
their resources, and the environment.
C. Stormwater is an important water resource, which provides groundwater
recharge for water supplies and base flow for healthy streams, which
also protects and maintains surface water quality.
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 cities to implement
a program of stormwater controls. These cities are required to obtain
a permit for stormwater discharges from their Municipal Separate Storm
Sewer Systems (MS4) under the National Pollutant Discharge Elimination
System (NPDES).
F. Riparian forest buffers enhance water quality by filtering pollutants
in runoff, providing light control and temperature moderation, processing
pollutants, increasing infiltration and providing channel and shoreline
stability thus decreasing erosion (DEP Riparian Forest Buffer Guidance,
November 27, 2010).
G. Much of the City is served by a combined sewer system that collects
and transports both domestic sewage and rainwater that flows from
impervious surfaces such as roofs, streets, and parking lots. The
City's Advanced Wastewater Treatment Facility is normally able
to manage and clean the volume of wastewater flowing through the combined
sewer system; however, during intense rainstorms and other wet weather
events, the system becomes overwhelmed causing untreated combined
sewage to overflow into the Conestoga River. These events are referred
to as combined sewer overflows.
The purpose of this chapter is to promote health, safety, and welfare within the City of Lancaster by minimizing the damages described in §
260-102 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, watercourses and
water conveyance facilities in the City of Lancaster and the commonwealth.
E. Preserve and restore the flood-carrying capacity of streams and associated
floodplains.
F. Provide proper operation and maintenance of all stormwater management
best management practices (SWM BMPs) that are implemented within the
City.
G. Provide performance standards and design criteria for watershed-wide
stormwater management and planning.
H. Meet or exceed, in light of unique local conditions, 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.
I. Prevent scour and erosion of stream banks and streambeds.
J. Provide standards to meet NPDES permit requirements.
K. Help preserve and protect exceptional natural resources, and conserve
and restore natural resource systems.
L. Promote stormwater management practices that emphasize infiltration,
evaporation, and transpiration.
M. Reduce combined sewer overflows.
Should any section, provision or part thereof of this chapter
be declared invalid by a court of competent jurisdiction, such decision
shall not affect the validity of any of the remaining provisions of
this chapter.
Any permit or authorization issued or approved based on false, misleading or erroneous information provided by an applicant is void without the necessity of any proceedings for revocation. Any work undertaken or use established pursuant to such permit or other authorization is unlawful and shall be enforced in accordance with Article
IX, Enforcement and Penalties. No action may be taken by a board, agency or employee of the City purporting to validate such a violation.
Except as specifically provided by the Pennsylvania Storm Water
Management Act, Act of October 4, 1978, P.L. 864, No. 167, as amended,
32 P.S. § 680.1 et seq., the making of any administrative
decision by the City of Lancaster or any of its officials or employees
shall not constitute a representation, guarantee or warranty of any
kind by the City of Lancaster of the practicability or safety of any
proposed structure or use with respect to damage from erosion, sedimentation,
stormwater runoff, flood, or any other matter, and shall create no
liability upon or give rise to any cause of action against the City
of Lancaster and its officials and employees. The City of Lancaster,
by enacting and amending this chapter, does not waive or limit any
immunity granted to the City of Lancaster and its officials and employees
by the Governmental Immunity Act, 42 Pa.C.S.A. § 8541 et
seq., and does not assume any liabilities or obligations.
Notwithstanding any provision(s) of this chapter, including
exemptions, any landowner or any person engaged in the alteration
or development of land which may affect stormwater runoff characteristics
shall implement such measures as are reasonably necessary 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 quality of resulting stormwater runoff in a manner which otherwise
adequately protects health, safety and welfare.