[Ord. 2010-3, 12/16/2010, § 1]
For any of the activities regulated by this Part and not eligible for the exemptions provided in §
26-117, 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 Hummelstown Borough.
[Ord. 2010-3, 12/16/2010, § 1]
The SWM site plan and SWM site report shall consist of all applicable
calculations, maps, and plans. All SWM site plan materials shall be
submitted to Hummelstown Borough in a format that is clear, concise,
legible, neat and well organized; otherwise, the SWM site plan shall
be rejected.
1. Appropriate sections from the Hummelstown Borough Subdivision and Land Development Ordinance [Chapter
22], and other applicable local ordinances, shall be followed in preparing the SWM site plan.
A. SWM site plan shall include (but 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, e-mail address,
and engineering 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 at a minimum scale of one inch equals 1,000 feet.
(7)
Metes and bounds description of the entire tract perimeter.
(8)
Existing and final contours at intervals of two feet.
(9)
Existing water bodies 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 Hummelstown
Borough or their designees 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 Hummelstown Borough.
(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
site plan meets all design standards and criteria of the Hummelstown
Borough's Stormwater Management Ordinance."
(e)
The following signature block for the qualified professional
preparing the SWM site plan as applicable:
"I, __________, hereby certify that there (are/are (not) wetlands
on the subject property, the proposed project (will/will not) impact
off-site wetlands, and permits (are/are not) required from the state
or federal government."
B. SWM site report shall include (but not 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, e-mail 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.
(4)
Drainage area maps for all watersheds and inlets depicting the
time of concentration paths.
(5)
A detailed description of the existing site conditions in accordance
with the "Pennsylvania Stormwater Best Management Practices Manual."
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.
[Amended by Ord. No. 2022-4, 10/13/2022]
(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 Borough stormwater collection system that may
receive runoff from the project site.
(10)
Description of the proposed changes to the land surface and
vegetative cover including the type and amount of impervious area
to be added.
(11)
All applicable worksheets from Chapter
8 of the BMP manual when establishing volume controls.
(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.
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)
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.
(5)
Permits from PADEP and ACOE.
(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.
[Ord. 2010-3, 12/16/2010, § 1]
1. The applicant shall submit the SWM site plan and report for the regulated
activity.
2. Three copies of the SWM site plan and report shall be submitted to
Hummelstown Borough and may be distributed as follows:
A. Two copies for Hummelstown Borough accompanied by the requisite municipal
review fee, as specified in this Part.
B. One copy for the Borough Engineer.
3. Additional copies shall be submitted as requested by Hummelstown
Borough, TriCounty Regional Planning Commission, Dauphin County Conservation
District or PADEP.
[Ord. 2010-3, 12/16/2010, § 1]
1. Hummelstown Borough shall require receipt of a complete SWM site
plan and report as specified in this Part. Hummelstown Borough shall
review the SWM site plan and Report for consistency with the purposes,
requirements, and intent of this Part.
2. Hummelstown Borough shall not approve any SWM site plan and report
that is deficient in meeting the requirements of this Part. At its
sole discretion and in accordance with this Part, when a SWM site
plan and report is found to be deficient, Hummelstown Borough may
disapprove the submission and require a resubmission, or in the case
of minor deficiencies, Hummelstown Borough may accept submission of
modifications. All revised SWM site plans and reports must be accompanied
by a comment response letter, indicating how each of the Borough's
comments was addressed.
3. Hummelstown Borough 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. Hummelstown Borough also may approve the
SWM site plan with conditions and, if so, shall provide the acceptable
conditions for approval in writing. 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.
[Amended by Ord. No. 2022-4, 10/13/2022]
4. Hummelstown Borough 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 Part, as determined by Hummelstown Borough. All required
permits from PADEP must be obtained prior to issuance of a building
permit.
[Ord. 2010-3, 12/16/2010, § 1]
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
Hummelstown Borough, shall require a resubmission of the modified
SWM site plan in accordance with this Part.
[Ord. 2010-3, 12/16/2010, § 1]
A disapproved SWM site plan and report may be resubmitted with
the revisions addressing Hummelstown Borough's concerns documented
in writing, to Hummelstown Borough in accordance with this Part. The
applicable municipal review fee must accompany a resubmission of a
disapproved SWM site plan and report.
[Ord. 2010-3, 12/16/2010, § 1]
Hummelstown Borough'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. Hummelstown Borough 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 Hummelstown Borough 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 Hummelstown Borough may consider the SWM site plan
disapproved and may revoke any and all permits or approvals.
[Ord. 2010-3, 12/16/2010, § 1]
1. 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 Hummelstown Borough.
2. 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. The latitude and longitude coordinates for all permanent
SWM BMPs must also be submitted, at the central location of the BMPs.
If any licensed qualified professionals contributed to the construction
plans, then a licensed qualified professional must sign the completion
certificate.
[Amended by Ord. No. 2022-4, 10/13/2022]
3. After receipt of the record drawings and certification of completion,
Hummelstown Borough may conduct a final inspection.