Legal Notice:
While every attempt has been made to be as accurate as
possible, the material found on these pages represents an
unofficial copy of the Dingman Township Sawkill Creek
Management Ordinance. When in conflict, the original signed
official documents kept in the Township Building shall
prevail. Persons relying on this version shall do so at
their own risk.
Copies
of this ordinance
may also be obtained
through the Dingman
Township Office.
Copies of any
referenced maps,
charts and tables
may also be obtained
through the township
office.
Sawkill
Creek Management
Ordinance
03-2018
Click Here to See the Act 167 Pike County Sawkill Creek
Watershed Stormwater Management Plan of July 1992
Click Here to See
Plates 1 - 3 Referenced Therein
AN ORDINANCE AMENDING THE DINGMAN TOWNSHIP
SAWKILL WATERSHED MANAGEMENT ORDINANCE, PROVIDING WATERSHED
REGULATIONS FOR THAT PORTION OF THE SAWKILL CREEK WATERSHED
LYING WITHIN DINGMAN TOWNSHIP.
ARTICLE I
GENERAL
PROVISIONS
SECTION
101. STATEMENT OF FINDINGS
The Board
of Supervisors of the Township of Dingman finds that:
A.
Inadequate management of accelerated runoff of
stormwater resulting from development throughout a
watershed may increase flow volumes and velocities,
contribute to erosion and sedimentation, overtax the
carrying capacity of streams and storm sewers, increase
the cost of public facilities to carry and control
stormwater, undermine floodplain management and flood
control efforts in downstream communities, reduce
groundwater recharge, deteriorate the water quality of
receiving waters, and threaten public health and safety.
B. A
comprehensive program of stormwater management,
including reasonable regulation of development and
activities causing accelerated runoff is fundamental to
the public health, safety, and welfare and the
protection of the people of the Township of Dingman and
all the people of the Commonwealth, their resources, and
the environment.
C.
Areas of the Sawkill Watershed are sensitive to
development due to the exceptional value water resources
and the nature of the Watershed geology, requiring
additional mitigating measures for earth disturbance and
site development. Additional safeguards must also be
provided for commercial and industrial developments to
minimize the potential for hazardous substance spills
including, but not limited to the implementation of
spill preventions plans.
D. The
Milford Water Authority secures its drinking water from
the Milford Springs which lie within the Sawkill
Watershed. The Authority has identified soure water
protection zones, entitled
Zone 1,
Zone 2, and Zone 3 in it’s Sourcewater Protection
Plan for the Milford Springs, as approved by PADEP in 2006. The geology found
within the Zone 1 and Zone 2 areas are sensitive to
environmental impacts due to the potential for
contamination of the Milford Water Authority Public
Drinking Water supply.
E.
The above referenced Source Water Protection Plan
identifies several methods for managing potential risks
to the Milford Springs. Among these is the need
for municipal cooperation and for tributary municipal
bodies, including Dingman Township and its Planning
Commission, to identify any development aspect posing a
potentially significant impact to te Milford Springs so
that appropriate protective measures can be implemented.
SECTION
102. PURPOSE
The
purpose of this Ordinance is to promote the public
health, safety and welfare and protect surface and
groundwater resources within the Sawkill Creek
Watershed by minimizing the damages described in
Section101 of this Ordinance. To accomplish this,
the Ordinance establishes a comprehensive stormwater
management program designed to:
A. Minimize increases in stormwater volume.
B. Minimize impervious surfaces
C. Manage accelerated runoff and erosion and
sedimentation problems at their source by regulating
activities which cause such problems.
D. Utilize and preserve existing natural
drainage systems.
E. Encourage recharge of groundwater where
appropriate.
F. Maintain the existing flows of streams and
watercourses in the Township of Dingman and the
Commonwealth.
G. Preserve and restore the flood carrying
capacity of steams.
H. Provide for proper design, installation, and
maintenance of all permanent stormwater management
structures which are constructed in the Township of
Dingman.
I. Promote project designs and best management
practices that minimize impacts to surface and
ground water quality and quantity from development
and pollution sources.
J. Provide
procedures and performance standards for stormwater
planning and management.
SECTION 103
STATUTORY AUTHORITY
The
Township of Dingman is empowered to regulate these
activities by the authority of the Act of October 4,
1978, PL 864 (Act 167), the “Stormwater Management
Act” and the Second Class Township Code.
SECTION
104. APPLICABILITY
A. This Ordinance shall apply to those areas of
the Township of Dingman as delineated on Plate 3 of
the Sawkill Creek Stormwater Management Plan.
B. This Ordinance contains only those stormwater
runoff control criteria and standards which are
necessary or desirable from a total watershed
perspective. Additional design standards (i.e. inlet
spacing, inlet type, collection system details,
etc.) may be listed in the Township’s
subdivision/land development ordinance, or may be
instituted by the Township’s Engineer.
C. The following activities are defined as
Regulated Activities and shall be regulated by this
Ordinance, except those individual land disturbance
activities which meet the criteria to qualify for
exemption, as described in Section 402:
1. General earth
disturbance activities, including clearing,
drilling, balsting, trenching, and
excavation.
2. Land
development
3. Subdivision
4. Agricultural
Operations
5. Construction of
new or additional impervious or semi-pervious
surfaces (driveways, parking lots, etc.)
6. Construction of
new buildings or additions to existing buildings
7. Redevelopment
of a site that will increase runoff or change a
discharge point
8. Forest
management operations
9. Nursery
operations
10. Diversion or
piping of any natural or man made drainage
channel
11. Installation
of stormwater best management practices, systems
or appurtenances thereto
12. Use and/or
storage of hazardous materials
13. Development of
groundwater monitoring wells or wells for
non-residential uses
ARTICLE II
DEFINITIONS
Unless
otherwise stated, the following words shall, for the purpose
of this Ordinance, have the meaning herein indicated. Words
in the present tense include the future tense. Words in the
singular include the plural and words in the plural include
the singular. The word “shall” is mandatory and not
discretionary. The word “may” is permissive. Technical
definitions not included in this article can be found in
Appendix C. Words not defined herein or in Appendix C shall
be construed to have the meaning given by common and
ordinary use.
Act
- The Pennsylvania Storm
Water Management Act of October 4, 1978 (P.L. 864, No. 167).
Agricultural Activity
- The work of producing crops including tillage, land
clearing, plowing, disking, harrowing, planting, harvesting
crops, or pasturing and raising of livestock and
installation of conservation measures. Construction of new
buildings or impervious area is not considered an
Agricultural Activity.
BMP (Best
Management Practice)
- Activities, facilities, designs, measures or procedures
used to manage stormwater impacts from Regulated Activities,
to meet State Water Quality Requirements, to promote
groundwater recharge and to otherwise meet the purposes of
this Ordinance. Stormwater BMPs are commonly grouped into
one of two broad categories or measures: “structural” or
“non-structural”. In this ordinance, non-structural BMPs
refer to operational and/or behavior-related practices that
control stormwater runoff quantity or quality, such as
innovative site design, impervious area and grading
reduction or protection of natural depression areas.
Sructural BMPs are those that consist of a physical device
or practice that is installed to capture and treat
stormwater runoff.
Conservation District
– Pike County Conservation District.
Critical
Area – An area
defined by this Ordinance to require more stringent control
of post-development runoff quality that those specified for
the general watershed area.
Dam
- An artificial barrier, together with its appurtenant
works, constructed for the purpose of impounding or storing
water or another fluid or semi-fluid or a refuse bank, fill
or structure for highway, railroad or other purposes which
does or may impound water or another fluid or semi-fluid.
Design
Storm - The
magnitude and temporal distribution of precipitation from a
storm event measured in probability of occurrence (e.g.,
10-yr. storm) and duration (e.g., 24-hours), and used in the
design and evaluation of stormwater management control
systems.
Developer
- A person or persons, partnership, association,
corporation, or other entity, or any responsible person
therein or agent thereof, that undertakes any Regulated
Activities covered by this Ordinance.
Development
Site - The specific
tract of land for which a Regulated Activity is proposed.
Drainage
- The flow of water and the methods directing such flow,
whether natural or artificial.
Drainage
Plan - The
documentation for the proposed stormwater management
controls, if any, to be used for a given development site,
the contents of which are established in Section 403.
Earth
Disturbance Activity
- A construction or other human activity which disturbs the
surface of the land, including, but not limited to, clearing
and grubbing, grading, excavations, embankments, road
maintenance, building construction, and the moving,
depositing, stockpiling, or storing of soil, rock or earth
materials, and any other action that causes or may cause any
alteration to the present condition of the land or that
affects or may affect stormwater runoff.
Enforcement
Officer - The
designated code enforcement officer of Dingman Township.
Engineer
- A professional engineer licensed as such in the
Commonwealth of Pennsylvania.
Erosion
- The removal of soil particles or rock fragments of the
land surface by the action of running water, wind, ice, or
other geological agents.
FHWA
- Federal Highway
Administration, United States Department of Transportation.
Forest Management / Timber
Operations -
Planning and activities necessary for the management of
forestland. These include timber inventory and preparation
of forest management plans, silvicultural treatment, cutting
budgets, logging road design and construction, timber
harvesting, site preparation and reforestation.
Hazardous
Materials - Any
substance which exhibits one of the four (4) characteristics
defined in 40 CFR § 261 Subport G – ignitability,
corrosivity, reactivity, toxicity, including but not limited
to:
Acetone, ammonia, benzene, calcium carbide, carbon
disulfide, celluloid, chlorine, hydrochloric acid,
hydrocyanic acid, magnesium, nitric acid and oxides of
nitrogen, petroleum products, phosphorus, potassium,
sodium, sulfur and sulfur products, pesticides
(including insecticides, fungicides, and rodenticides),
and radioactive substances
Impervious
Surface (Impervious Area)
- A surface that prevents the infiltration of water into the
ground. Impervious surfaces (or covers) shall include, but
not be limited to, roofs, additional indoor living spaces,
patios, garages, storage sheds and similar structures,
streets, sidewalks, driveways and compacted fill.
Land
Development - Any
of the following activities: (1) The improvement of one lot
or two or more contiguous lots, tracts, or parcels of land
for any purpose involving (i) a group of two or more
residential or nonresidential building on a lot or lots
regardless of the number of occupants; or (ii) the division
or allocation of land or space, whether initially or
cumulatively, between or among two or more existing or
prospective occupants by means of, or for the purpose of
streets, common areas, leaseholds, condominiums, building
groups or other features. (2) A subdivision of land. (3)
development in accordance with Section 503(1.1) of the PA
Municipalities Planning Code.
Land
Surveyor - A
professional land surveyor licensed as such in the
Commonwealth of Pennsylvania.
Material
Safety Data Sheet (MSDS) - A document that contains
information on the potential health effects of exposure to
chemicals, or other potentially dangerous substances, and on
safe working procedures when handling chemical products.
Memorandum
of Understanding (MOU)
- An agreement initiated by the Township and outside
agency(s) to document the responsibilities and liabilities
of concerned parties for specified task(s). The document may
also include provisions for enacting a fee schedule for work
performed.
Municipality –
Dingman Township, Pike County, Pennsylvania.
NRCS
- Natural Resources Conservation Service (previously SCS).
Non-Point
Source Pollution –
Pollution that enters a water body from diffuse origins in
the watershed and does not result from discernible, confined
or discrete conveyances.
Nursery
– A tract of land on which trees and plants are raised or
stored for transplanting and sale.
Client
- Any person, partnership, corporation, company or other
legal entity holding a current legal title.
PA DEP
- Pennsylvania Department of Environmental Protection.
Qualified Professional
– Any person licensed by the Pennsylvania Department of
State or otherwise qualified by law to perform the work
required by the Ordinance.
PA DOT
- Pennsylvania Department of Transportation.
Regulated
Activity - Action
or proposed action which impact upon proper management of
stormwater runoff and which is governed by this Ordinance as
specified in Section 104.
Riparian
- Relating to or situated on the banks of rivers and
streams.
Runoff
- That part of
precipitation which does not enter the soil but, flows over
the surface of the land.
Semi-pervious Surface
- A surface such as stone, porous bituminous pavement or
other materials which permits some vertical transmission of
water into the ground and areas which have a recommended
runoff coefficient of 0.75 to 0.89 per Appendix B.4.
Source
Water Protection Plan - The "Source Water
Protection Plan of the Milford Springs" dated June
2006, as prepared for the Municipal Authority of the
Borough of Milford.
Source
Water Protection Zone – The zones (1,2, &
3) as defined by the Milford Municipal Authority in the
“Source Water Protection Plan for the Milford Springs” June
2006, and as depicted on Appendix C.
Stormwater
- Runoff and drainage from land surfaces resulting from
precipitation including snow or ice melt.
Stormwater
management – A
program of controls and measures designed to regulate the
quantity and quality of stormwater from a development and/or
land disturbance while promoting the protection and
conservation of ground waters and groundwater recharge.
Stormwater
Management Plan -
The plan for managing stormwater runoff adopted by the Pike
County Commissioners as required by the Act.
Subdivision
- The division or re-division of a lot, tract or parcel of
land by any means into two or more lots, tracts, parcels, or
other divisions of land including changes in the existing
lot lines for the purpose, whether immediate or future, of
lease, partition by the court for distribution to heirs or
devises, transfer of ownership or building or lot
development: provided, however, that the subdivision by
lease of land for agricultural purposes into parcels of more
than ten (10) acres, not involving any new street or
easement of access or any residential dwelling, shall be
exempted.
Sub-area
- The smallest breakdown unit of watershed for hydrologic
modeling purposes for which the runoff control criteria have
been established in the Stormwater Management Plan. These
areas are identified in Table 6, Page 56 of the Sawkill
Stormwater Management Plan.
Township
- Dingman Township
USDA
- United State Department of Agriculture
USDI
- United States Department
of Interior
USDOT
- Untied States Department of Transportation.
USEPA
- United States Environmental Protection Agency.
USFWS
- Untied States
Fish and Wildlife Service.
Watershed
- The entire region or area drained by a river, watercourse
or other body of water, whether natural or manmade.
Water
Obstruction - Any
dike, bridge, culvert, wall, wingwall, fill, pier, wharf,
embankment, abutment, or other structure located in, along,
or across or projecting not any watercourse, whether natural
or artificial with perennial or intermittent flow.
Wet land
- Those areas that are inundated or saturated by surface or
groundwater at a frequency and duration sufficient to
support, and that under normal circumstances do support, a
prevalence of vegetation typically adapted for life in
saturated soil conditions, including swamps, marshes, bogs,
fens and similar areas.
ARTICLE III
STORMWATER
MANAGEMENT REQUIREMENTS
SECTION
301. GENERAL REQUIREMENTS
A.
Any facilities that entail earth disturbance activity,
as described in Article II, shall be conducted in such a
way as to minimize accelerated erosion and sediment
pollution. Measures to control erosion and sediment
pollution and stormwater runoff shall at a minimum, meet
the standards of the Pike County Conservation District
and 25 PA Code Chapter 102 (Erosion Control) the
Delaware River Basin Commission (DRBC) Special
Protection Waters regulations, the National Pollutant
Discharge Elimination System (NPDES) permit for
stormwater discharges from construction activities, and
PA Code Chapter 93 Water Quality Antidegradation
Regulations. Where the above regulations and this
ordinance conflict, the more restrictive of the two on
the matter at issue shall control.
B.
Any facilities that are regulated by PA DEP Chapter 105
regulations (Dam Safety and Waterway management, as
amended or replaced from time to time by PA DEP) shall
be designed in accordance with Chapter 105 and will
require a permit from PA DEP. Any other drainage
conveyance facility that does not require a Chapter 105
permit must be able to convey, without damage to the
drainage structure upland areas or roadway, runoff from
the 25 year design storm with a minimum 1.0 foot of
freeboard measured below the lowest point along the top
of the roadway. Structures intended to impound
surface water or groundwater shall not negatively impact
the recharge of groundwater to the source aquifer.
C.
Stormwater management facilities located within or
affecting the floodplain of any watercourse shall be
subject to the requirements of Chapter 106 regulations
(Flood Plain management Act) and any Township ordinance
which regulates construction and development within
areas which are subject to flooding.
D.
Stormwater management facilities must be designed so
that the post development runoff rates are controlled in
accordance with the mean annual (2.33) (pre-development
and post-development flows) and 10 year design storm
with applied release rates. The facilities shall require
safe passing of up to and including 100 year storm event
through basin structures. Should the physical parameters
of a detention basin be such that more than 1,000 acre
feet of storage, or if the dam is more than 40 feet
high, Chapter 105 regulations should require a design
flow greater than the 100 year event.
E.
Any Stormwater Management Facilities regulated by this
Ordinance that would be located on a State Highway
Right-of-Way shall be subject to approval by PA DOT.
F.
It is the responsibility of the developer to provide a
site specific drainage design that controls the rate,
volume and quality of stormwater runoff from the project
using the following design principles:
1. Minimize
disturbed areas
2. Retain and
utilize natural site conditions and topography
3. Maintain
natural hydrology
4. Minimize
impervious areas and disconnect impervious
surfaces
5. Provide
opportunities for groundwater recharge (where
applicable)
6. Utilize
non-structural BMPs before structural BMPs
7. Fully
evaluate non-discharge alternatives and
Implement water quality controls for all
stormwater discharges to surface or groundwater
8. Protect
stream channels from degradation (e.g. scour,
streambank destabilization) and maintain
riparian buffers.
9. Prevent
increased flooding or erosion due to the runoff
rate or volume
10. Ensure
long-term operation and maintenance of BMPs
G.
Impervious Area for drainage design should be calculated
using the following:
1. The
measurement of impervious areas shall include
all of the impervious areas in the total
proposed development even if development is to
take place in stages.
2. For
development taking place in stages, the entire
development plan must be used in determining
conformance with this Ordinance.
3. For
projects that add impervious area to a parcel,
the total impervious area on the parcel is
subject to the requirements of this ordinance.
H.
It is the responsibility of the developer to assure that
the maximum rate of storm water runoff is no greater
after development than prior to development activities
and that the quantity, velocity and direction of
resulting storm water runoff is managed to protect
health and property from possible injury
I.
Stormwater shall be conveyed to a natural outfall that
has sufficient capacity to receive the design storm peak
runoff from the watershed without deterioration of the
facility and without adversely affecting property in the
watershed. This natural outfall may be a river, creek,
intermittent flow drainage ditch or other drainage
facility identified by the site topography and field
conditions. Discharge at the natural outfall shall also
be velocity controlled to prevent erosion.
J.
Sites which present the potential for hazardous
substances entering the stormwater water collection and
conveyance system shall employ containment and treatment
measures to prevent the transport of hazardous materials
to the ground or surface water.
All
sites where hazardous materials are stored for use or
re-sale on a temporary or permanent basis shall prepare
a Spill Prevention Plan as required by Sections 503 and
504 for
review by the Township, and the Milford Water Authority.
Innovative stormwater management systems maybe used when
approved by the Township of Dingman. Various
combinations of stormwater management systems should be
developed to suit the particular, unique requirements of
the development and topographic features of the
development site. Engineering data shall be supplied to
the Township in support of such measures.
Approval of a proposed stormwater management control
facility using these innovative methods shall depend on
the effectiveness of the facility in controlling the
impacts of post-development runoff rates and volumes and
the design and construction specifications. The
following is a partial listing of control methods which
can be used in stormwater management facilities where
appropriate:
a. French Drains
b. Infiltration
Trenches
c. Porous Pavement
d. Pre-case
Concrete Lattice Blocks and Bricks
e. Terraces,
Diversions and Runoff Spreaders
f. Seepage Pits or
Dry Wells
g. Seepage Beds or
Ditches
h. Seepage Areas
i. Detention
Basins
j. Parking Lot
Storage
General
descriptions, including the operation and maintenance of
these Stormwater Management Facilities are provided in
Section 5 of the Sawkill Stormwater Management Plan.
K.
Should a given property contain portions of
multiple protection zones, it is the responsibitity of
the developer to minimize impacts to the more critical
zone to the extent possible when implementing stormwater
management controls.
L.
Due to the sensitive nature of the surface and
groundwater within the Sawkill watershed, pretreatment
of stormwater shall be required for all infiltration
practices and discharges. Pre-treatment practices shall
comply with the PADEP Best Management Practices Manual
and shall be for 100% of the two (2) year storm events.
M.
Access to facilities shall be provided for maintenance
and operation. This access shall be a cleared and graded
access that is, a minimum of fifteen (15) feet wide.
Proximity of facilities to public Right-of-Ways shall be
encouraged in order to minimize the length of
easements or Right-of-Ways. Multiple accesses shall be encouraged for
major facilities. Appropriate easements or
Rights-of-Ways must be provided to allow access to the
stormwater management facilities by Township personnel
and equipment. Facilities shall be designed to provide
necessary access for required maintenance.
N.
Due to the sensative nature of the surface waters and
groundwater within the Sawkill Watershed, new water
source withdrawals for private development, including
the construction of new private water supply wells,
should be developed as to avoid impact to the Milford
Springs.
O.
All control facility designs shall conform to the
applicable standards and specifications of the following
governmental and institutional agencies.
American
Society of Testing and Materials (ASTM)
Asphalt
Institute (AI)
Pike County
Conservation District
Federal
Highway Administration (FHWA)
National
Crushed Stone Association (NCSA)
National Sand
and Gravel Association (NSGA)
Pennsylvania
Department of Environmental Protection (PADEP)
Pennsylvania
Department of Transportation (PADOT)
P.
No Harm Option
The
intent of this Section is to allow for flexibility
of design when downstream storage volume is
available to development projects located near
lakes, streams, wetlands or other natural features.
This option is only available once the developer can
demonstrate compliance with the nondischarge
alternatives and existing use provisions of 25 PA
Code 93.4c(b)(1)(i)(A) and (B). "No Harm" proposals
are not acceptable for Zone 2 of the SourceWater
Protection Zone. The final
determination of this “no harm” option shall rest
solely and exclusively with the Township.
Proposed “no harm” justifications shall be submitted
by the developer as part of the Drainage Plan
Submission re: Article IV.
Proposals to prove “no harm” based upon downstream
peak flow versus capacity analysis shall be based on
a 10 year storm event for flows and shall be
governed by the following provisions:
1. The peak
flows to be used for downstream areas for
various return period storms shall be the values
from the PSRM Model for the Sawkill Creek
Watershed.
2. Any
available capacity in the downstream conveyance
systems as documented by a developer and
approved by the Township may be used by the
developer and approved by the Township may be
used by the developer only in proportion in
their development site acreage relative to the
total upstream acreage from the identified
capacity (i.e. if their site is 10% of the
upstream acreage, they may use up to 10% of the
documented downstream available capacity.)
3.
Developer-proposed runoff controls which would
generate increased peak flow rates at documented
storm drainage problem areas as determined by
the Township shall, by definition, be precluded
from using the “no harm” option, except in
conjunction with proposed capacity improvements
for the problem areas.
SECTION
302. STORMWATER MANAGEMENT SUBAREAS
A.
Mapping of Stormwater Management Subareas – In order to
implement the provisions of the Sawkill Creek Stormwater
Management Plan, the Township is divided in to subareas
as delineated on Plate No. 3 in the Stormwater Plan.
B.
Identification of Critical Areas – Critical areas for
peak flow rates have been defined using the Release Rate
formula. These release rates dictate the extent to which
post development runoff must be controlled. Within a
given sub-watershed, the post development peak flow rate
of storm runoff must be controlled to the stated
percentage of the pre-development peak rate of storm
runoff fin order to protect downstream watershed areas.
All sub-watersheds not listed in the following table
have a release rate of 100%.
Subwatershed |
Release Rate Percentage |
|
|
4 |
70 |
13 |
80 |
14 |
80 |
15 |
80 |
17 |
80 |
18 |
80 |
19 |
80 |
20 |
80 |
22 |
80 |
SECTION 303. METHODS OF
CALCULATION OF RUNOFF FLOW PARAMETERS
A.
The methods of computation used to determine peak
discharge volume of runoff or design hydrographs shall
be one of the following four methods or any other method
approved by the Township engineer in advance.
1.
The USDA NRCS Soil Cover Complex Method as set forth
in the latest edition of “Urban Hydrology for Small
Watersheds”, Technical Release No. 55.
2.
The USDA NRCS Soil cover Complex Method as set forth
in the “TR-20 computer Program for Project
Formulation Hydrology” Technical Release No. 20.
3.
The Penn State Runoff Model (PSRM) as set forth in
the Penn State Runoff Model User’s Manual, latest
revision.
4.
For drainage areas less than 20 acres without
retention/detention systems or up to 200 acres for
design of local pipe system, the Rational method may
be used. Where any overland control facility is
proposed, one of the above methods shall be used.
The “Rational method” of Q=CIA, where Q is the peak
discharge from the watershed in cubic feet per
second (cfs), C is the co-efficient of runoff, I is
the intensity of rainfall in inches per hour and A
is the area of the watershed in acres.
B.
Rainfall frequency data to be used depends on the method
of computation selected.
5.
When the NRCS Soil cover Complex method is used,
storm runoff shall be based on the following storm
events and reflect the SCS Type II 24-hour rainfall
distribution.
STORM EVENT |
INCHES OF
RAINFALL |
|
|
2.33 year |
2.94 |
5 year |
3.76 |
10 year |
4.43 |
25 year |
5.25 |
50 year |
5.89 |
100 year |
6.50 |
When the Rational Method is used, the Region 4 or
Region 5 Rainfall Intensity Duration Frequency
charts shown in the PADOT Design Manual (Manual),
Part 2, latest revision, as amended shall be used to
determine the rainfall intensity, in inches per
hour. The charts are shown on Figures 2.10 4.2(D)
and 2.10 4.2(E) of the Manual should be used to
determine if Region 4 or Region 5 curves are to be
used.
C.
Runoff Curve Numbers (CN’s) to be used in the Soil Cover
Complex methods shall be based upon the matrix presented
in NRCS TR 55, Table 2.2.a.
D.
Time of Travel (Tt) estimates for overland flows shall
be computed using the method as describe din NRCS TR 55,
Chapter III.
E.
Runoff coefficients for use in the Rational Method shall
be based upon the table presented in Appendix B.4 of
this Ordinance.
F.
The Manning equation shall be used to calculate the
capacity and velocity of flow in open channels without
backwater producing structures and in closed drains not
under pressure. Manning “n” values used in the
calculations shall be consistent with the table
presented in Appendix B.5 of this Ordinance. Where
backwater impacts are potentially present, the US Army
Corps of Engineers HEC 2 program as set forth in “HEC 2
Water Surface Profiles Users Manual” or equivalent shall
be used.
G.
All runoff calculations shall include both a hydrologic
and hydraulic analysis indicating: 1) rates and
velocities of flow; 2) grades, dimensions, and
capacities of water carrying structures and impoundment
structures; and 3) sufficient design information to
construct such stormwater management facilities. Runoff
calculations shall include both pre-development and post
development rates of peak discharges and volumes of
storm runoff from the project development site. Runoff
calculations for the site’s conditions during
development shall be used to size temporary control
measures.
ARTICLE IV
DRAINAGE
PLAN REQUIREMENTS
SECTION
401. GENERAL REQUIREMENTS
Prior
to the preliminary approval of subdivision and/or land
development plans and the commencement of any land
disturbance activity involving any of the Regulated
Activities of this Ordinance, the owner, subdivider,
developer or his agent shall submit a Drainage Plan to
the Township of Dingman for approval. The plan shall
meet the requirements set forth herein, and shall also
meet all requirements of Title 25 Rules and Regulations
of the PADEP – Chapter 102 (Erosion Control), Chapter
105 (Dam Safety and Waterway management, and Chapter 106
(Flood Plain management), and Chapter 92 (NPDES
Permitting, Monitoring and Compliance) and Chapter 93
(Water Quality Standards).
SECTION
402. EXEMPTIONS
The
following activities are specifically exempt from a
drainage plan submittal, review and permit requirements
of this Ordinance.
A.
Use of land for gardening for home consumption.
B.
Any earth disturbance from a subdivision creating less
than five thousand (5000) square feet of impervious
surface. (See Section 301 F re: calculating impervious
area). Nevertheless, any such earth disturbance shall be
provided with adequate soil erosion and sedimentation
controls, as prescribed by the County Conservation
District.
C.
Any land development creating less than five thousand
5000 square feet of impervious surface (see Sect. 301 F
re: calculating impervious area). Nevertheless, such
earth disturbance associated with the land development
shall be provided with adequate soil erosion and
sedimentation controls, as prescribed by the County
Conservation District.
D.
Agricultural Operations Exclusion
Any
land disturbance associated with agricultural activities
operated in accordance with a conservation plan or
Erosion and Sedimentation Control Plan found adequate by
the Conservation District is exempt from the Drainage
Plan preparation provision of this Ordinance , except
for those included within Source Water Protection Zone 2.
E.
Forest Management Operations Exclusion
Any
land disturbance associated with forest management
operations, not associated with a larger common plan of
development, which is following the PADEP’s management
practices (contained in its publication “Soil and
Erosion and Sedimentation Control Guidelines for
Forestry”) and is operating under an Erosion and
Sedimentation Control Plan found adequate by the
Conservation District and a Forest Management Plan is
exempt from the Drainage Plan preparation provision of
this Ordinance.
SECTION
403. PLAN COMPONENTS
The
following items, where appropriate, shall be included in
the Drainage Plan:
A.
Written narrative, including the following information:
1. A general description of the project.
2. A general description of proposed stormwater
controls (temporary and permanent) both during and
after development including the stormwater runoff
calculations identifying method used, assumptions
and factors considered, and criteria used for both
pre-development and post development conditions.
Supporting
calculations including:
- Design Frequency
storm rainfall amounts
- area of
impervious surface (see Art. III Sect.301 F 2)
- Curve Number or
Runoff Coefficient
- Runoff from the
design frequency storm
- volume of water
infiltrated through BMP’s
- volume of water
treated by BMP’s
- Peak discharge
amounts from the design frequency storm
3. A general description of an ownership and
maintenance program that clearly sets forth the
ownership and maintenance responsibility of all
temporary and permanent stormwater management
facilities and erosion and sedimentation control
facilities including:
a. Description
of temporary and permanent maintenance
requirements.
b. Identification
of responsible individual, corporation,
association or other entity for ownership and
maintenance of both temporary and permanent
stormwater management and erosion and
sedimentation control facilities.
c. Establishment
of suitable easements for access to all
facilities.
d. The intent of
these regulations is to provide private
ownership and maintenance of stormwater
management and erosion and sediment control
facilities. Where the Drainage Plan proposes
that the Township of Dingman own or maintain the
facilities, a description of the methods,
procedures, and the extent to which any
facilities shall be turned over to the Township
of Dingman shall be incorporated as an integral
part of the Drainage Plan.
e. Where private
development is involved, deed covenants and
restrictions must be submitted to provide for
maintenance of stormwater facilities by property
owner or owner’s association.
4. Expected project time schedule, including
anticipated start and completion date.
5. The plans must indicate that they have been
prepared by a Pennsylvania licensed Engineer or
Landscape Architect.
B.
Plans, showing the following information:
1. General
a. All plans
shall be on sheet sizes consistent with (the
Township subdivision and land development
ordinance).
b. Proposed
name or identifying title of project.
c. Name and
address of the landowner and developer of the
project site.
d. Plan date
and date of the latest revision to the plan,
north point, graphic scale and written scale.
All plans shall be at a scale of ten (10),
twenty (20), forty (40), fifty (50), or one
hundred (100) feet to the inch.
e. Total
acreage and boundary lines of the project site
and the tract of land on which the project site
is located.
f. A location
map, for the purpose of locating the project
site to be developed, at a minimum scale of two
thousand (2,000) feet to the inch, showing the
relation of the tract to adjoining property and
to all highways, streets, Township boundaries,
and other identifiable landmarks existing
within one thousand (1,000) feet of any part of
the tract of land on which the project site is
proposed to be developed. Map should also
include overlay/identification of affected
subareas to readily see their release rates as
defined in the Sawkill Creek Management Plan.
Plate 4 include in the Sawkill Creek Stormwater
Management Plan may be used.
g. Review
Statement by Township engineer.
h. Signature
blocks for approval by the Board of Supervisors
and review by the Planning Commission.
i. Signature
blocks for review by the Township’s planning
commission.
2.
Existing Features
a. Tract
boundaries showing distances, bearings and curve
data, as located by field surveys or by deed
plotting.
b. Existing
contours at vertical intervals of two (2) feet
in areas of construction unless otherwise
required by the Township.
c. The names
of all owners of all immediately adjacent
unplatted land, the names of all proposed or
existing developments immediately adjacent, and
the locations and dimensions of any streets or
easements shown thereon.
d. The names,
locations and dimensions of all existing
highways, streets, railroads, watercourses,
wetlands and other bodies of water, as
delineated by a wetland scientist drainage
features and facilities, floodplains, existing
vegetation to be preserved, and other
significant features within (two hundred) feet
of any part of the tract proposed to be
developed and the location of all buildings.
e. Locations
and dimensions of overhead and underground
utilities, sewers and water lines.
f. Soil types
as designated by the Pike County Soil Survey.
g.
The source water protection zone areas as
depicted on Exhibit A.
3.
Proposed Features
a. The
proposed land use, the number of lots and
dwelling units and the extent of commercial,
industrial or other non-residential uses.
b. The
locations and dimensions of all proposed
streets, parks, playgrounds, and other public
areas; overhead and underground utilities and
the sewer and water facilities; lot lines and
building locations, and parking compounds and
other impervious and semi-impervious surfaces.
c. The
proposed changes to land surface and vegetative
cover, including limits of earth disturbance and
amount of impervious area to be added.
d. Areas of
final grade cuts or fills.
e. Final
contours at vertical intervals of two (2) feet
for areas.
f. A fifteen
(15) foot Right-of-Way around all stormwater
management structures and from such structures
to a public Right- of-Way.
4.
Stormwater Management Facilities
a. A written
description of the overall stormwater management
concept for the project designed in accordance
with the requirements of this ordinance.
b. Subarea
boundaries as defined in Table 6, page 56 of the
Sawkill Management Plan and applicable to the
development site.
c.
Non-structural BMPs
d. All storm
sewers along with any proposed connections to
existing facilities.
e. Groundwater
recharge methods such as seepage pits, beds or
trenches. When these structures are used, the
locations of septic tank infiltration areas and
wells must be shown.
f. Other
control devices or methods such as roof top
storage, grass swales, parking lot ponding,
vegetative strips and detention or retention
basins.
g. Plans and
profiles of all proposed stormwater management
facilities including vertical and horizontal
alignment, size and type of material. This
information shall be of the quality required for
the construction of all facilities.
h. A
certificate, signed and sealed by a Qualified
Professional indicating the compliance of the
design of the stormwater management facilities
with the provisions of this Ordinance.
i. A
engineering report detailing the engineering
characteristics of all existing and proposed
stormwater control structures shall be provided.
5.
Erosion and Sedimentation Controls
a. The type,
location and extent of all erosion and
sedimentation control measures shall be shown on
an erosion and sedimentation control plan that
conforms to the requirements of Chapter 102
(Erosion Control) of Title 25 Rules and
Regulations of the PADEP. Any requirements set
forth in the Chapter 93 Antidegradation
Regulations and current NPDES regulations shall
be satisfied.
b. Financial
security for the completion of stormwater
management facilities as set forth in Article
VII of this Ordinance.
c. Maintenance
guarantee, as set forth in Article VIII of this
Ordinance.
d. When a
Drainage Plan is submitted in sections, a
generalized drainage plan for the entire project
site shall be submitted in addition to the
detailed drainage plan for the stormwater of the
proposed section as it relates to the entire
development. The amount and velocity at the
discharge point of the section shall be included
in the data submitted. If temporary facilities
are required for construction of a section, such
facilities shall be included in the submitted
Drainage Plan.
6. Site Water Supply
a.
The location, type, and proposed volume of what withdrawal
for private, onsite water supply, including wells and
surface water withdrawals.
b.
For proposed non-residential water uses in excess of 10,000
gallons-per-day (gpd) include a statement from a registered
hydrogeologist stating there will be no dterimental impact
to the Milford Springs.
SECTION
404. PLAN SUBMISSION
A.
For Regulated activities specified in Section 104:
1. The Drainage Plan shall be submitted by the
developer to the Township of Dingman as part of the
submission of the Drainage Plan for the Regulated
Activity.
2. Six (6) copies of the Drainage Plan shall be
submitted.
3. Distribution of the Drainage Plan will be as
follows:
a) Two (2)
copies to the Board of Supervisors
b) One (1)
copy to the Township Engineer
c) One (1)
copy to the Township Planning Commission
d) One (1)
copy to the Pike County Conservation District
e) One (1)
copy to the Milford Water Authority
B.
The Drainage Plan shall be accompanied by the requisite
fee, as set forth in Article VI of this Ordinance.
SECTION
405. PLAN REVIEW AND APPROVAL
Plan
review and approval by agencies outside of the municipal
government are contingent upon a memorandum of
Understanding with the Township of Dingman.
A. Township Engineer
The
Township of Dingman shall review the Drainage Plan
for consistency with the adopted Sawkill Creek
Stormwater Management Plan, as embodied by this
Ordinance and with any additional storm drainage
provisions contained in the Township’s applicable
codes, regulations and ordinances. The Township
engineer shall provide written comment of his review
to the Township of Dingman.
B. Township Planning Commission/Pike County
Conservation District Review
The
Township Planning Commission/Pike County
Conservation District shall review the Drainage Plan
for consistency with the Sawkill Creek Watershed
Stormwater Management Plan. The Commission/District
shall provide written comment of their review to the
Township of Dingman.
C. Milford Water Authority
The
Milford Water Authority shall review the drainage
plan for consistency with and adherence to the Source Water
Protection Plan for the
Milford Springs. The Authority shall provide
written comment of their review to the Township of
Dingman.
D. Public Hearing
The
Township of Dingman may require a public hearing if
the Township Engineer, or the Township Planning
Commission request one and/or the Township of
Dingman deems it appropriate. The Township may, in
its discretion, hold a hearing concurrently with the
other hearings on the project. Provisions for a
public hearing include:
1. A minimum
of a two week public notice in a local newspaper
or in a mailed newsletter.
2. The notice
shall contain a brief summary of the Drainage
Plan and a reference to the places where copies
may be examined or purchased at a cost.
E. Notification of Decision
The
decision of the Township of Dingman shall be in
writing and shall be communicated to the developer
personally or mailed to him at his last known
address no later than ninety (90) days from receipt
of a complete Drainage Plan submission. A decision
does not have to be rendered until a drainage plan
is considered complete by the Township of Dingman.
F. Disapproval Stipulations
When the Drainage Plan is not approved in terms as
submitted, the decision shall specify the defects
found in the Drainage Plan and describe the
requirements which have not been met and shall, in
each case, cite to the provisions of the Ordinance
relied upon.
G. Approval Time Limitations
Failure of the Township of Dingman to render a
decision and communicate it to the developer within
the time and in the manner required herein shall be
deemed an approval of the Drainage Plan in terms as
presented unless the developer has agreed in writing
to an extension of time. Approval shall be based on
itemized list of submission contents with all
revision dates of follow up transmittals provided by
drainage plan applicant.
H. Approval Agency
The
agency who prepares the plan should not be the
agency who approves the plan.
I. Records
The
developer shall record the approved submission and
land development plan and drainage plan and all
accompanying documentation at the Pike County
Prothonotary Office within ninety (90) days of
approval.
SECTION
406. MODIFICATIONS OF PLANS
A
modification to an approved Drainage Plan which involves
a change in control methods or techniques, or which
involves the relocation or redesign of control measures,
or which is necessary because soil or other conditions
are not as stated on the approved plan application (as
determined by the Township engineer or their designee),
shall require a resubmission of the modified Drainage
Plan consistent with Section 404 and subject to review
per Section 405 of this Ordinance.
ARTICLE V
HAZARDOUS
MATERIAL STORAGE/USE
SECTION
501.
Prior
to the preliminary approval of land development or
subdivision plans of the owner/developer shall submit a
Spill Prevention Plan to Dingman Township for review and
approval. The plan shall meet the requirements set forth
herein.
SECTION
502. EXEMPTIONS
The
following activities are exempt from a Spill Prevention
Plan submittal, review and permit requirements of this
ordinance.
A. Any construction activity
or land development or use which
stores/sells/utilizes any hazardous material with a
combined total quantity of less than 55
gallons for all substances.
B. Permanent residential uses,
provided that the total volume of any stored/used
hazardous material is less than 55 gallons (This does not
exclude the construction activities associated with
residential construction).
SECTION
503. SOURCEWATER PROTECTION ZONE
A.
The source water protection zone areas are as depicted
on Exhibit A. Should a given property contain
portions of munlitple protection zones, the provisions
of this ordinance will be applied with priority given to
the protection of the more critical zone. In the event that the Applicant disputes
the Zone boundaries depicted on
Appendix C A, the applicant may employ a
Professional Geologist to prepare a hydrogeologic survey
to definitively delineate the boundary line. The burden
of proof in determination of the specific zone boundary
shall fall on the developer/property owner.
B.
Storage of the following hazardous substances shall be
prohibited in Source Water Protection
Zone 2 except as exempted in paragraph 6.
1. Petroleum hydrocarbon compounds including,
but not limited to, gasoline, kerosene, diesel fuel,
aviation fuel, jet fuel and heating oil.
2. Degreasing compounds and dry cleaning solvents
including, but not limited to, trichloroethene,
trichloroethane, trichloroethylene,
perchloroethylene (also called tetrachloroethylene)
and paint thinners.
3. Herbicides, pesticides, insecticides and
fertilizers in liquid or granular (solid) form.
4. Formaldehyde and embalming compounds
containing arsenic, zinc, mercury, copper, lead,
silver, antimony, chloral or cyanogens, or of any
compound containing any of these, or any poisonous
alkaloid.
5. Rock salt and de-icing compounds, in either
solid or liquid form, and containing but not limited
to, sodium chloride, calcium chloride, potassium
chloride and magnesium chloride, and ethylene-glycol
based anti-freeze compounds.
6. The use, sale and/or storage of the above
chemicals and compounds other than for residential
purposes and less than 55 total gallons is prohibited, with the exception of
gasoline, kerosene, diesel fuel and heating oil that
may be utilized for heating of onsite structures or
be stored for resale in accordance with the storage
tank, piping, dispenser, monitoring, registration
and licensing requirements and regulations of the
Pennsylvania Department of Environmental Protection.
The
petroleum hydrocarbons of gasoline, kerosene, diesel
fuel and heating oil are permitted for self use on
site. However, in ground storage tanks in excess of
400 gallons must have secondary containment and
active interstitial leak monitoring and alarm
systems. Above ground and inside building tanks and
containers in excess of 400 gallons must have
secondary containment and the ability to monitor the
interstitial space between the primary and secondary
containers.
Storage containers include above ground tanks and
containers, in ground tanks and containers, tanks
and containers inside buildings, and tank trucks and
freight trucks containing drums or other containers
parked for a period longer than twenty-four (24)
hours.
C.
Infiltration of stormwater from commercial sites in
Source Water Protection Zone 2 shall be employed only
with the provisions for adequate pre-treatment in
accordance with PADEP BMP Manual. BMP design
should incorporate sampling locations upstream of the
infiltration BMP as well as the ability to tempoarility
disconnect the infiltration BMP from the site stormwater
management system(s) in event runoff became
contaminate.
SECTION
504. SPILL PREVENTION PLAN
The
following items shall be included in the Spill
Prevention Plan:
A. Written narrative including the following
information:
1. A general
description of the project.
2. A detailed
listing of the hazardous materials, including
anticipated quantities to be stored and/or
utilized on the subject property both during
construction and upon completion of site
development. MSDS sheets for each stored
material shall be included in the report.
3. The plan
shall describe in detail the measures one must
take to prevent, contain and clean up a
hazardous material spill.
4. Explanation of
regulatory applicability, penalties and
appropriate certifications;
5. Description
of oil storage and handling areas;
6. Description
of surface and interior drainage patterns;
7. Description
of past spill events;
8. Analysis of
potential spill scenarios;
9. Evaluation
of the potential impact of spills on the
environment, including the protected source
waters;
10. Description
of spill response and notification procedures;
11. Description
of emergency response equipment;
12. Description of
emergency prevention procedures and logs
documenting proper training and inspections;
13. Designation
of responsibilities and
14. Description
of site security measures
15. Professional
Engineer’s review and signature.
B. The SPP shall be updated upon any change in
operation of the facility, including a modification
of the hazardous material stored/used or every five
(5) years. All updates shall be submitted to
the Township and the Milford Authority for review.
C. MSDS (Material Safety Data Sheets) shall be
provided in the SPP for all chemicals used/stored on
the site.
SECTION
505. SITE REQUIREMENTS
Properly managing hazardous and toxic substances and
petroleum products in the project site will greatly
reduce the potential for stormwater pollution by these
substances. Good housekeeping practices, along with
proper use and storage of these substances, form the
basis of proper management of potentially harmful
substances.
A. Bulk storage tanks having a capacity of more
than 55 gallons shall have secondary containment.
Containment can be provided by a prefabricated
containment mat, an earthen berm with an impervious
liner, concrete dikes, or other accepted measure.
B. Storage of hazardous materials, chemicals,
fuels and oils and fueling of equipment shall not
take place within 200 feet of any drainage,
watercourse, wetland, spring, stormwater BMP, or other water
feature.
C. Stormwater collection systems shall be
equipped with a means to contain and detain spilled
hazardous chemicals. Systems may include holding
tanks and valves. Systems shall be designed to
accommodate the type and quantity of hazardous
materials present on the site. The design of these
systems shall be by a professional engineer licensed
in the Commonwealth of Pennsylvania, subject to
review of the Township.
D. The employment of infiltration practices on
sites requiring a SPC may not be permitted due to
the increased potential from groundwater
contamination.
SECTION
506. PLAN REVIEW AND APPROVAL
Plan
review and approval by agencies outside of the municipal
government are contingent upon a memorandum of
Understanding with the Township of Dingman.
A. Township Engineer
The Township of
Dingman shall review the Spill Prevention Plan
for consistency with the adopted Sawkill Creek
Stormwater Management Plan, as embodied by this
Ordinance and with any additional storm drainage
provisions contained in the Township’s
applicable codes, regulations and ordinances.
The Township engineer shall provide written
comment of his review to the Township of
Dingman.
B. Township Planning Commission/Pike County
Conservation District Review
The Township
Planning Commission/Pike County Conservation
District shall review the Spill Prevention Plan
for consistency with the Sawkill Creek Watershed
Stormwater Management Plan. The
Commission/District shall provide written
comment of their review to the Township of
Dingman.
C. Milford Water Authority
The Milford Water
Authority shall review the Spill Prevention Plan
for consistency with and adherence to the Source Water Protection
Plan for the Milford Springs. The Authority
shall provide written comment of their review to
the Township of Dingman Public Hearing.
D. The Township of Dingman may require a public
hearing if the Township Engineer, or the Township
Planning Commission request one and/or the Township
of Dingman deems it appropriate. The Township may,
in its discretion, hold a hearing concurrently with
the other hearings on the project. Provisions for a
public hearing include:
3. A minimum
of a two week public notice in a local newspaper
or in a mailed newsletter.
4. The notice
shall contain a brief summary of the Drainage
Plan and a reference to the places where copies
may be examined or purchased at a cost.
E. Notification of Decision
The decision of
the Township of Dingman shall be in writing and
shall be communicated to the developer
personally or mailed to him at his last known
address no later than ninety (90) days from
receipt of a complete Spill Prevention Plan
submission. A decision does not have to be
rendered until a Plan is considered complete by
the Township of Dingman.
F. Disapproval Stipulations
When the Spill
Prevention Plan is not approved in terms as
submitted, the decision shall specify the
defects found in the Plan and describe the
requirements which have not been met and shall,
in each case, cite to the provisions of the
Ordinance relied upon.
G. Approval Time Limitations
Failure of the
Township of Dingman to render a decision and
communicate it to the developer within the time
and in the manner required herein shall be
deemed an approval of the Spill Prevention Plan
in terms as presented unless the developer has
agreed in writing to an extension of time.
Approval shall be based on itemized list of
submission contents with all revision dates of
follow up transmittals provided by Plan
applicant.
H. Approval
Agency
The agency who
prepares the Plan should not be the agency
who approves the Plan.
I. Records
The developer
shall record the approved submission and
land development plan and Spill Prevention
Plan and all accompanying documentation at
the Pike County Recorder’s Office within
ninety (90) days of approval.
SECTION
507. MODIFICATIONS OF PLANS
A
modification to an approved Drainage Plan which involves
a change in control methods or techniques, or which
involves the relocation or redesign of control measures,
or which is necessary because soil or other conditions
are not as stated on the approved plan application (as
determined by the Township engineer or their designee),
shall require a resubmission of the modified Drainage
Plan consistent with Section 404 and subject to review
per Section 405 of this Ordinance.
ARTICLE VI
INSPECTIONS
SECTION 601. GENERAL
REQUIREMENTS
A.
Prior to approval of the constructed stormwater
management facilities of the approved Drainage Plan, the
developer must provide a schedule of inspections with a
final inspection and submission of “as built” drawings
to the Township engineer. These inspection provisions
pertain only to construction activities regulated by the
plan preparation provisions of Article IV and V.
However, any activities granted exemption from plan
preparation provisions as described in Section 402 and
Section 1101 and therefore exemption from the inspection
provisions must manage stormwater in the manner
specified in the other provisions of this Ordinance.
B.
Prior to Final Inspection, the developer shall submit
drawings bearing the seal of a Qualified Representative
indicating the “As Built” improvements in the approved
plan. These improvements shall at a minimum identify
elevations of structures, outfalls, slopes, contours in
regarded areas and locations of all structures
identified by Qualified Representative. Any deviations
from the design shall be identified and justified in
writing as part of as-built submission. Where deviations
exist affecting the capacity of structures to handle the
design criteria in the intended manner they shall be
addressed and remedied by procedures identified in
Section 406.
SECTION
602. SCHEDULE OF INSPECTIONS
A.
The developer must submit a certification by a Qualified
Professional; which certifies that all elements of the
approved Drainage Plan have been constructed as designed
and approved.
B.
The Township engineer or designee shall inspect all
phases of development of the site including, but not
limited to:
1. Completion of preliminary site preparation
including stripping of vegetation, stockpiling of
topsoil, and construction of temporary stormwater
management and erosion control facilities.
2. Completion of rough grading, prior to
placing top soil, permanent drainage or other site
development, improvements and ground covers.
3. During construction and installation of the
permanent stormwater facilities at such times to be
specified by the Township engineer.
4. Upon completion of permanent stormwater
management facilities, including established ground
covers and plantings.
5. Upon completion of any final grading,
vegetative control measures or other site
restoration work done in accordance with the
approved Drainage Plan.
C.
No work shall begin on a subsequent stage until the
proceeding stage has been inspected and approved by the
Township Engineer or the designee.
D.
It is the responsibility of the developer to notify the
Township of Dingman forty-eight (48) hours in advance of
the completion of each identified phase of development.
The Township of Dingman may then request the Township
engineer or the designee to perform the necessary field
reviews.
E.
In the event the Township engineer or designee discovers
that the work does not comply with the approved Drainage
Plan or any applicable laws and ordinances, the Township
of Dingman shall stop work until corrections are made.
Any portion of the work that does not comply with the
approved plan must be corrected by a developer within
ten (10) days. No work may proceed on any subsequent
phase of the Drainage Plan, the subdivision or land
development or building construction until the required
corrections have been made.
F.
If at any stage of the work, the Township engineer or
the designee determines that the soil or other
conditions are not as stated or shown in the approved
Drainage Plan, he may refuse to approve further work and
the Township of Dingman may revoke approvals until a
revised Drainage Plan is submitted and approved, as
required by Section 406 of this Ordinance. If the
revised Drainage Plan cannot remedy that situation then
the Township of Dingman reserves the right to revoke the
Township of Dingman approval and halt all work except
for that work required to “close out” the activity and
return the site to pre-activity conditions as much as is
reasonably possible.
G.
If the Township Engineer or designee discovers that the
facilities or measures installed may be in violation of
Chapter 102 of the Clean Streams Law or related
provisions of Chapters 92 and 93), the Township engineer
or designee will refer these violations to the Pike
County Conservation District.
SECTION
603. FINAL INSPECTION
When
the developer has completed all the required facilities,
he shall notify the Township of Dingman in writing by
certified mail, and shall send a copy of such notice to
the Township engineer, the Township of Dingman shall
within, ten (10) days after receipt of such notice,
authorize the Township engineer to inspect the required
facilities. Following this final inspection, the
township engineer shall promptly file a report, in
writing, with the Township of Dingman and shall mail a
copy of the report to the developer by certified or
registered mail. The report shall be made and mailed
within fifteen (15) days after receipt by the Township
Engineer of the aforesaid authorization by the Township
of Dingman.
ARTICLE VII
FEES AND
EXPENSES
SECTION
701. GENERAL
Drainage permit fees and Spill Prevention Plan fees
covering costs to the governing body for plan review,
permit issuance, and inspections shall be established by
resolution of the governing body. No permit to begin any
work on the project shall be issued and no reviews
performed until the requisite fees have been paid. The
submission shall be considered incomplete if the
required fees have not been paid.
SECTION
702. MODIFICATION OF PLANS
If it
is determined that a modification to the existing
drainage plan is required under Section 406 of this
Ordinance, a new drainage permit shall not be issued
until additional fees have been paid by the applicant.
SECTION
703. EXPENSES COVERED BY FEES
The
fees payable by an applicant shall at a minimum cover:
A. The review of the Drainage Plan by the
Township engineer as presented in Section 405 of
this Ordinance.
B. The site inspection.
C. The inspection of required controls and
improvements during construction as presented in
Section 602 of this Ordinance.
D. The final inspection upon completion of the
controls and improvements required in the plan as
presented in Section 603 of this Ordinance.
E. Any additional work required to enforce any
provisions regulated by this Ordinance, correct
violations and assure the completion of stipulated
remedial actions.
F. Review of Spill Prevention Plans under
Section 506.
SECTION
704. FEE SCHEDULE
A. A fee schedule is available from the Township
of Dingman during regular business hours.
B.
As it pertains to the required reviews by the
Milford Water Authority and the Authority's
engineer, the Authority will access fees in addition
to those established by the Township. An
Authority Fee Schedule is available at the Milford
Authority office during regular business hours.
ARTICLE VIII
FINANCIAL
GUARANTEES AND MAINTENANCE
SECTION
801. PERFORMANCE GUARANTEES
A.
The developer shall provide the Township of Dingman
financial security as a performance guarantee in a form
to be approved by the Township Solicitor.
B.
Without limitation as to other types of financial
security which the Township of Dingman may approve,
Federal or Commonwealth charted lending institution
irrevocable letters of credit and restrictive or escrow
accounts in such lending institutions shall be deemed
acceptable financial security for the purposes of this
section.
C.
Such financial security shall be posted with a Federal
or Commonwealth charted lending institution chosen by
the party posting the financial security, provided said
lending institution is authorized to conduct such
business within the Commonwealth.
D.
Such security shall provide for, and secure to the
public, completion of the installation of all stormwater
management facilities on or before the date fixed on the
approved Drainage Plan for the completion of such
facilities.
E.
The amount of financial security to be posted shall be
equal to one hundred ten percent (110%) of the cost to
install the required facilities estimated as of ninety
(90) days following the date scheduled for completion by
the developer. Annually, the Township of Dingman may
adjust the amount of the financial security by comparing
the actual cost of the facilities which have been
installed and the estimated cost for the completion of
the remaining facilities as of the expiration of the 90th
day after either the original date scheduled for
completion or the rescheduled date of completion.
Subsequent to said adjustment, the Township of Dingman
may require the developer to post additional security in
order to assure that the financial security equals 110%.
Any additional security shall be posted by the developer
in accordance with this subsection.
F. The amount of financial
security required shall be based upon an estimate of the
cost of completion of the required facilities, submitted
by an applicant or developer and prepared by a Qualified
Representative and certified by such Individual to be
fair and reasonable estimate of such cost. The Township
of Dingman, upon the recommendation of the Township
Engineer, may refuse to accept such estimate for good
cause shown.
G.
Financial Security for Staged Development - In the case
where development is projected over a period of years,
the Township of Dingman may authorize submission of
Drainage Plan application by sections or stages of
development so as to require or guarantee that
Stormwater Management Facilities in both current and
future stages of development will provide the protection
of the finally approved stage of the development.
H. Release of Financial Security
– As the work of installing the required Stormwater
Management Facilities proceeds, the Developer posting
the financial security may request the Township of
Dingman to release or authorize the release, from time
to time, such portions of the financial security
necessary for payment to the contractor or contractors
performing the work. Any such requests shall be in
writing addressed to the Township of Dingman who shall
have forty-five (45) days from receipt of such request
within which to allow the Township Engineer to certify,
in writing, to the Township of Dingman that such portion
of the work upon the facilities has been completed in
accordance with the approved plan. Upon such
certification, the Township of Dingman shall authorize
release by the lending institution of an amount as
estimated by the Township Engineer fairly representing
the value of the facilities completed or, if the
Township of Dingman fails to act within said fifteen
(15) day period, the Township of Dingman shall be deemed
to have approved the release of funds as requested. The
Township of Dingman may, prior to final release, require
retention of ten percent (10%) of the estimated cost of
the aforesaid facilities. The final release of the
financial security provisions shall be permitted only
after receipt by the Township of Dingman of
certification and “As-Builts” as required in Section
501. In no event shall the financial security be less
than one hundred ten percent (110%) of the estimated
cost of completion.
I.
Where the Township of Dingman accepts dedication of all
or some of the required facilities following completion,
the Township of Dingman may require the posting of
financial security to secure structural integrity of
said facilities as well as the functioning of said
facilities in accordance with the design and
specifications as depicted on the Drainage Plan for a
term of eighteen (18) months from the date of acceptance
of dedication. Said financial security shall be of the
same type as otherwise required in this section with
regard to installation of such facilities, and the
amount of the financial security shall not exceed
fifteen percent (15%) of the actual cost of installation
of said facilities. The developer will also be required
to maintain the facilities for that eighteen (18) month
period.
J. Based on the report of the
Township Engineer, the Township of Dingman shall
indicate approval or rejection of the Stormwater
Management Facilities, either in whole or in part; and
if not approved, state reasons for the rejection. The
Township of Dingman shall notify the developer, within
fifteen (15) days of receipt of the Engineer’s report,
in writing by certified or registered mail, of its
actions.
K.
If any portion of said improvements are not approved or
are rejected by the Township of Dingman, the developer
shall proceed to complete the same and, upon completion,
the same procedure of notification, as outlined herein,
shall be followed.
L. Nothing herein, however, shall
be construed in limitation of the developer’s right to
contest or questions by legal proceedings or otherwise,
any determination of the Township of Dingman or the
Township Engineer.
M. Where herein reference is made
to the Township Engineer, he shall be as a consultant
hereto.
SECTION 802. MAINTENANCE RESPONSIBILITIES
The maintenance responsibilities for
permanent stormwater runoff control facilities shall be
determined based upon the type of ownership of the
property.
A. Single Entity Ownership – In all cases where
the permanent stormwater facilities are designed to
manage runoff from property in a single entity
ownership as defined below, the maintenance
responsibility for the Stormwater Control Facilities
shall be with the single entity owner. In this case
a legally binding agreement between the entity and
the Township of Dingman shall be made providing for
maintenance of all permanent control facilities, and
allowing inspection by the Township of Dingman
and/or the Milford Water Authority of
all such facilities at any reasonable time. A single
entity shall be defined as an individual,
association, public or private corporation,
partnership firm, trust, estate, or any legal entity
empowered to own real estate.
B. Multiple Ownership – In
cases where the property is in multiple ownership
(i.e. many individual owners of various portions of
the property) the developer shall enter into an
agreement with the Township of Dingman to determine
the maintenance of the permanent stormwater
facilities. Any such agreements shall be
specifically binding upon any homeowners association
of other permanent entity which may be formed.
SECTION 803. MAINTENANCE GUARANTEES
Upon
approval of any Stormwater Management Facilities by the
Township of Dingman the developer shall provide a
financial security, in a form approved by the Township
solicitor for maintenance guarantees, as follows:
A.
Construction Maintenance Bond
The Township
of Dingman may require the posting of a maintenance
bond to secure the structural integrity of said
facilities as well as the functioning of said
facilities in accordance with the design and
specifications as depicted on the approved Drainage
Plan for a term not to exceed eighteen (18) months
from the date of acceptance of dedication. Said
financial security shall be the same type as
required in Section 801 with regard to installation
of such facilities, and the amount of the financial
security shall not exceed fifteen percent (15%) of
the actual cot of installation of said facilities.
B.
Documentation
The terms of
maintenance guarantees shall be documented as part
of the Drainage Plan as per Section 403.D of this
Ordinance.
ARTICLE IX
ENFORCEMENT
AND PENALTIES
SECTION 901. ENFORCEMENT
The
Township of Dingman shall designate by resolution a
qualified individual, agency, or combination thereof to
act as the Enforcement Officer. Said Enforcement Officer
will execute the regulations set forth in this
Ordinance. In the event that the Enforcement Officer is
unable to perform his duties, or in the event of a
conflict of interest, the Township of Dingman may
appoint an alternate to fulfill his/her
responsibilities.
SECTION 902. RIGHT OF ENTRY
Upon
presentation of proper credentials, duly authorized
representatives of the Township of Dingman and Milford
Water Authority may enter at
reasonable times upon any property within the Township
of Dingman to investigate or ascertain whether proper
maintenance is being provided for any Stormwater
Management Facilities or Spill Prevention Plan for which
the Township of Dingman is not directly responsible for
maintenance, as provided in Section 802.
SECTION 903. VIOLATIONS
Any
activity conducted in violation of this Ordinance is
declared to be a public nuisance.
A.
Notice
In the event
that an owner, applicant, developer, property
manager, or his/her agent fails to comply with the
Ordinance, the Enforcement Officer shall provide a
written notice of the violation to be served upon
the person. Such notice shall set forth the nature
of the violation(s) and direct the person to whom it
is served to comply with all the terms of this
Ordinance within seven (7) days, or such additional
period, not to exceed thirty (30) days, as the
Enforcement Officer shall give notice to the owner,
applicant, developer, property manager, or is agent
thereof that if the violation is not corrected, the Township
of Dingman may correct the same and charge the
landowner or other person responsible the cost
thereof plus penalties as specified herein for
failure to comply. The Board of
Supervisors may, for good cause shown by the owner,
applicant, developer, property manager, or agent
thereof, extend the period for compliance under this
section.
B.
Service of Notice
Such notice
may be delivered by the United Sates mail first
class, postage prepaid, or by certified or
registered mail; or by personal service; or, if the
property is occupied, by posting the notice at a
conspicuous place upon the subject property.
SECTION 904.
PENALTIES
A. Anyone violating the
provisions of this Ordinance shall upon
conviction shall be subject to a fine not more than
$1,000.00 for each violation, recoverable with
costs, or imprisonment of not more than thirty (30)
days, or both. Each day that the violation continues
shall be a separate offense.
B.
In case any
building, structure, or land is, or is proposed to
be, erected, constructed, reconstructed, altered,
converted, maintained or used in violation of this
ordinance the Township Supervisors or, with the
approval of the Township Supervisors, an officer of
the Township, in addition to other remedies, may
institute in the name of the Township any
appropriate action or proceeding to prevent,
restrain, correct, or abate such building,
structure, or land, or to prevent in or about such
premises, any act, conduct, business or use
constituting a violation.
C. Nothing
contained in this section shall be construed or
interpreted to grant to any person or entity other
than the Township of Dingman the right to commence
any action for enforcement pursuant to this section.
ARTICLE X
APPEALS
SECTION 1001. APPEAL TO BOARD OF
SUPERVISORS
Any person,
partnership, corporation, or organization aggrieved by
any decision of the Township of Dingman or its designee
may appeal to the Board of Supervisors within thirty
(30) days of that action.
SECTION 1002. APPEAL TO COURT
Any
person, partnership, corporation, or organization
aggrieved by any decision of the Board of Supervisors
may appeal to the Court of Common Pleas of Pike County
within thirty (30) days of that decision.
ARTICLE XI
MISCELLANEOUS
SECTION 1101. HARDSHIP WAIVER
PROCEDURE
A.
The Board of Supervisors may hear requests for waivers
where it is alleged that the provisions of this
Ordinance inflict unnecessary hardship upon the
applicant. The waiver request shall be in writing using
an application form promulgated by the Township of
Dingman. A copy of the completed application form shall
be provided to each of the following: Township, Township
Engineer, Township Solicitor, Township Planning Commission,
and the Milford Water Authority. The
application shall state in full the grounds and facts of
hardship on which the request is based, the provision or
provisions of the Ordinance involved and the minimum
waiver necessary.
B.
The Township of Dingman may grant a waiver of one or
more provisions of this Ordinance provided that such
waiver will not be contrary to the public interest and
that all of the following findings are made in a given
case:
1. That
there are unique physical circumstances or
conditions, including irregularity of lot size or
shape, or exceptional topographical or other
physical conditions peculiar to the particular
property, and that the unnecessary hardship is due
to such conditions, and not the circumstances or
conditions generally created by the provisions of
this Ordinance (The presence of Source Water
Protection Zone 2 on a given property shall not be
considered a valid basis for a waiver);
2. That
because of such physical circumstances or
conditions, there is no possibility that the
property can be developed in strict conformity with
the provisions of this Ordinance, including the
direct discharge option documented in Section 301
(P), and that the authorization of a waiver is
therefore necessary to enable the reasonable use of
the property;
3. That such
unnecessary hardship has not been created by the
applicant; and
4. That the
waiver, if authorized, will not represent the
minimum waiver that will afford relief and will
represent the least modification possible of the
regulation in issue.
C.
In granting any waiver, the Township of Dingman may
attach such reasonable conditions and safeguards as it
may deem necessary to implement the purposes of this
Ordinance. The Township of Dingman shall keep a record
of all action on all requests for waivers.
SECTION 1102. REPEALER
Any
ordinance of the Township of Dingman inconsistent with
any provisions of this Ordinance is hereby repealed to
the extent of the inconsistency.
SECTION 1103. COMPATIBILITY
WITH OTHER PERMIT AND ORDINANCE REQUIREMENTS
Permits and
approvals issued pursuant to this Ordinance 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.
If more stringent requirements concerning regulation of
stormwater or erosion or sedimentation pollution control
are contained in any other code, rule, act, or
ordinance, the more stringent regulation shall apply.
ARTICLE XII
ENACTMENT
SECTION 1201. SEVERABILITY
If any section,
subsection, or requirement of this Ordinance shall be
held to be unconstitutional or invalid by any court of
competent jurisdiction, such decision shall not affect
the legality of the remaining provisions of this
Ordinance or of this or of this ordinance as a whole.
SECTION 1202. AMENDMENTS
Amendments to this Ordinance may be initiated by the
Township Planning Commission or the Board of
Supervisors. If the amendments are initiated by the
Board of Supervisors, the proposed amendment or
amendments shall be submitted to the Township Planning
Commission for review and comment at least thirty (30)
days prior to a public hearing. Before enactment of a
proposed amendment or amendments the Board of
Supervisors shall hold a public hearing thereon pursuant
to public notice.
SECTION 1203. EFFECTIVE DATE
This Ordinance shall become effective
on the day of adoption.
Ordained and
enacted this __17th
_ day of _July_,
2018
DINGMAN TOWNSHIP BOARD OF SUPERVISORS
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