For any of the activities regulated by this chapter and not eligible for the exemptions provided in § 168-15 the final approval of subdivision and/or land development plans, the issuance of any building or occupancy permit, or the commencement of any land disturbance activity, may not proceed until the applicant has received written approval of a SWM site plan from the Township.
The SWM site plan and SWM site report shall consist of all applicable
calculations, maps, and plans prepared under the direction of a professional
engineer or land surveyor registered in Pennsylvania with experience
in drainage and stormwater management planning. All SWM site plan
materials shall be submitted to the Township in a format that is clear,
concise, legible, neat, physically bound, and well organized; otherwise,
the SWM site plan shall be rejected. Appropriate sections from the
West Hanover Township Subdivision and Land Development Ordinance,[1] and other applicable local ordinances, shall be followed
in preparing the SWM site plan.
A.
SWM site plan shall include (but is not limited to):
(1)
Plans no larger than twenty-four-inch by thirty-six-inch sheets and
in a form that meets the requirements for recording in the Office
of the Recorder of Deeds of Dauphin County.
(2)
The name of the development; name and location address of the property
site; name, address, and telephone number of the applicant/owner of
the property; and name, address, telephone number, email address,
and professional engineer or land surveyor seal of the individual
preparing the SWM site plan.
(3)
The date of submission and dates of all revisions.
(4)
A graphical and written scale on all drawings and maps.
(5)
A North arrow on all drawings and maps.
(6)
A location map using USGS topographic map or equivalent, at a minimum
scale of one inch equals 1,000 feet showing the project location with
surrounding area for reference.
(7)
Bearings and distance description of the entire tract perimeter.
(8)
Existing and final contours at intervals of two feet.
(9)
Existing waterbodies within the project area including streams, lakes,
ponds, field delineated wetlands or other bodies of water, sinkholes,
flood hazard boundaries (FEMA delineated floodplains and floodways),
areas of natural vegetation to be preserved, the total extent of the
upstream area draining through the site, and overland drainage paths.
(10)
The location of all existing and proposed utilities, on-lot
wastewater facilities, water supply wells, sanitary sewers, and water
lines on and within 50 feet of property lines.
(11)
A key map showing all existing man-made features beyond the
property boundary that may be affected by the project.
(12)
Soil names and boundaries with identification of the Hydraulic
Soil Group classification.
(13)
The proposed limit of disturbance line and associated proposed
disturbed acres.
(14)
Proposed structures, roads, paved areas, and buildings, including
plans and profiles of roads and paved areas and floor elevations of
buildings.
(15)
Horizontal alignment, vertical profiles, and cross sections
of all open channels, pipes, swales and other BMPs.
(16)
The location and clear identification of the nature of permanent
stormwater BMPs.
(17)
The location of all erosion and sedimentation control facilities.
(18)
A minimum twenty-foot-wide access easement around all stormwater
management facilities that would provide ingress to and egress from
a public right-of-way. In lieu of providing an easement to the public
right-of-way, a note may be added to the plan granting the Township
or their designee's access to all easements via the nearest public
right-of-way.
(19)
Construction details for all drainage and stormwater BMPs.
(20)
Construction details of any improvements made to sinkholes.
(21)
Identification of short-term and long-term ownership, operations,
and maintenance responsibilities.
(22)
Notes and statements:
(a)
A statement, signed by the landowner, acknowledging that the
stormwater BMPs are fixtures that cannot be altered or removed without
prior approval by the Township.
(b)
A statement referencing the operation and maintenance (O&M)
agreement and stating that the O&M agreement is part of the SWM
site plan.
(c)
A note indicating that record drawings will be provided for
all stormwater management facilities prior to occupancy, or the release
of financial security.
(d)
The following signature block for the qualified professional
preparing the SWM site plan:
"I, __________, hereby certify that the stormwater management
plan meets all design standards and criteria of the West Hanover Township
Stormwater Management Ordinance."
(e)
Place the following as a conspicuous stand-alone note on the
first plan sheet: "The owner or contractor must schedule a preconstruction
conference with the Township Engineer to be held at least four working
days prior to the start of any site construction, earth disturbance,
clearing or grubbing. Also, the owner or contractor shall contact
the Township Engineer at least four working days prior to the start
of any sire construction, earth disturbance, clearing or grubbing
to facilitate construction observation.
(23)
A justification must be included in the SWM site plan if BMPs
other than green infrastructure methods and LID practices are proposed
to achieve the volume, rate, and water quality controls under this
chapter.
B.
SWM site report shall include (but not be limited to):
(1)
The name of the development; name and location address of the property
site; name, address, and telephone number of the applicant/owner of
the property; and name, address, telephone number, email address,
and engineering seal of the individual preparing the SWM site report.
(2)
Project description narrative including expected project time schedule.
(3)
Location map showing the project site and its location relative to
release rate districts.
(4)
Drainage area maps for all watersheds and inlets depicting the time
of concentration paths.
(5)
A detailed description of the existing site conditions. A detailed
site evaluation shall be completed for projects proposed in areas
of carbonate geology or karst topography, and other environmentally
sensitive areas such as brownfields.
(6)
Complete hydrologic, hydraulic, and structural computations, calculations,
assumptions, and criteria for the design of all stormwater BMPs.
(7)
Description of, justification, and actual field results for infiltration
testing with respect to the type of test and test location for the
design of infiltration BMPs.
(8)
Calculations showing the total drainage area and impervious area
loading rates to each BMP.
(9)
The effect of the project (in terms of runoff volumes, water quality,
and peak flows) on surrounding properties and aquatic features and
on any existing Township stormwater collection system that may receive
runoff from the project site. Conclusions shall include a comparison
of existing and proposed peak rates of runoff.
(10)
Description of the proposed changes to the land surface and
vegetative cover including the type and amount of impervious area
to be added.
(12)
Identification of short-term and long-term ownership, operation,
and maintenance responsibilities as well as schedules and costs for
inspection and maintenance activities for each permanent stormwater
or drainage BMP, including provisions for permanent access or maintenance
easements. The identity of the person(s) responsible for the operation
and maintenance shall be stated.
(13)
Facility ownership/maintenance acknowledgement: a separate page
with a signature block and statement, signed by the landowner, acknowledging
that all stormwater BMPs are fixtures that can be altered or removed
only after approval by the Township.
(14)
Date of visit by the design professional.
C.
Supplemental information to be provided prior to recording of the
SWM site plan, as applicable:
(1)
Signed and executed operations and maintenance agreement (Appendix
A).[2]
[2]
Editor's Note: Appendix A is included as an attachment to this chapter.
(2)
Signed and executed easements, as required for all on-site and off-site
work.
(3)
An erosion and sedimentation control plan and approval letter from
the Dauphin County Conservation District.
(4)
An NPDES permit.
(5)
Permits from PADEP and USACE.
(6)
A geologic assessment.
(7)
A wetland delineation report.
(8)
A highway occupancy permit from PennDOT when utilization of a PennDOT
storm drainage system is proposed or when proposed facilities would
encroach onto a PennDOT right-of-way.
A.
The Township shall require receipt of a complete SWM site plan and
report as specified in this chapter. The Township shall review the
SWM site plan and report for consistency with the purposes, requirements,
and intent of this chapter.
B.
The Township shall not approve any SWM site plan and report that
is deficient in meeting the requirements of this chapter. At its sole
discretion and in accordance with this Article, when an SWM site plan
and report is found to be deficient, the Township may disapprove the
submission and require a resubmission, or in the case of minor deficiencies,
the Township may accept submission of modifications.
C.
The Township shall notify the applicant in writing within 45 calendar
days whether the SWM site plan and report is approved or disapproved
if the SWM site plan and report is not part of a subdivision or land
development plan. If the SWM site plan and report involves a subdivision
or land development plan, the timing shall following the subdivision
and land development process according to the Municipalities Planning
Code.[1]
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
D.
The West Hanover Township Building Permit Office shall not issue
a building permit for any regulated activity if the SWM site plan
and report has been found to be inconsistent with this chapter, as
determined by the Township. All required permits from PADEP must be
obtained prior to issuance of a building permit.
E.
As part of any applicable activity identified as a regulated activity
or for any required zoning permit related to construction and other
regulated earth disturbance activities applicable under § 195-97
or 195-101 101 of the Township Zoning Ordinance,[2] the Township shall review the drainage and stormwater
management plan (SWM site plan and report) for consistency with the
purposes and requirements of this chapter and any permits issued by
DEP.
F.
All SWM site plan and reports shall be deemed approved by the issuance
of the required SWM permit or the approval of the subdivision and
land development plan. For SWM permits reviewed during the subdivision
and land development review process, the SWM site plan and report
will be reviewed by the Township with comments and technical deficiencies
indicated during the plan review process.
G.
For any SWM site plan that proposes to use any BMPs other than green
infrastructure and LID practices to achieve the volume and rate controls
required under this chapter, the Municipality will not approve the
SWM site plan, unless it determines that green infrastructure and
LID practices are not practicable.
H.
The Township shall require a record plan prepared and/or certified
by a PE or PLS licensed in the Commonwealth of Pennsylvania indicating
all stormwater BMPs and facilities that are interconnected with existing
public facilities, located in the public right-of-way or on public
property and/or to be dedicated to the Township. The record plan will
also include an explanation of any discrepancies with the SWM site
plan and report.
A.
A modification to a submitted SWM site plan and report for a development
site that involves a change in stormwater management facilities or
techniques, or that involves the relocation or re-design of stormwater
management facilities, or that is necessary because soil or other
conditions are not as stated on the SWM site plan as determined by
the Township, shall require a resubmission of the modified SWM site
plan in accordance with this chapter.
A disapproved SWM site plan and report may be resubmitted with
the revisions addressing the Township's concerns documented in
writing, to the Township in accordance with this chapter. The applicable
Township review fee must accompany a resubmission of a disapproved
SWM site plan and report.
The Township's approval of a SWM site plan and report authorizes
the regulated activities contained in the SWM site plan for a maximum
term of validity of five years following the date of approval. The
Township may specify a term of validity shorter than five years in
the approval for any specific SWM site plan. Terms of validity shall
commence on the date the Township signs the approval for a SWM site
plan. If stormwater management facilities included in the approved
SWM site plan have not been constructed, or if a record drawing of
these facilities has not been approved within this time, then the
Township may consider the SWM site plan disapproved and may revoke
any and all permits or approvals.
A.
The applicant shall be responsible for providing record drawings
of all stormwater BMPs included in the approved SWM site plan. The
record drawings and an explanation of any discrepancies with the approved
SWM site plan shall be submitted to the Township.
B.
The record drawings shall include a certification of completion signed
by a qualified professional verifying that all permanent stormwater
BMPs have been constructed according to the approved SWM site plan
and report.
C.
After receipt of the record drawings and certification of completion,
the Township may conduct a final inspection.
