A.
The SWM site plan shall consist of a narrative and all applicable
calculations, maps, plans and supplemental information necessary to
demonstrate compliance with this chapter.
B.
All landowners of land included in the SWM site plan shall be required
to execute all applications and final documents.
C.
All SWM site plans and calculations shall be prepared and sealed
by a qualified person. All stormwater designs, assumptions, methods
and data must be presented in a manner acceptable to the Township
Engineer.
D.
Where the regulated activity constitutes subdivision or land development
as hereinabove defined, the SWM site plan shall be submitted with
and form an integral part of the plans required under the Municipal
Subdivision and Land Development Ordinance.
E.
All stormwater management materials shall be submitted in a format
that is clear, concise, legible, neat and well organized.
G.
All agricultural uses must provide an approved and proven to be implemented
Agricultural Erosion and Sediment Control Plan or Conservation Plan
and a Manure Management Plan.
A.
The plan should be clearly and legibly drawn.
B.
If the plan is prepared in two or more drawing sheets, a key map
showing the location of the sheets and a match line shall be placed
on each sheet.
C.
Each sheet shall be numbered to show the relationship to the total
number of sheets in the plan (e.g. Sheet 1 of 5).
D.
Drawings or maps of the project area shall be drawn at one inch equals
50 feet or larger scale (i.e. one inch equals 40 feet, one inch equals
30 feet, etc.) and shall be submitted on a minimum twenty-four-inch
by thirty-six-inch sheets.
E.
SWM site plans shall be prepared in a form that meets the requirements
for recording for the Office of the Recorder of Deeds of Lancaster
County.
F.
The total development site boundary and size with distances marked
to the nearest foot and bearings to the nearest degree.
The following items shall be included in the SWM site plan:
A.
The date of the SWM site plan and latest revision, graphic scale,
written scale and North arrow.
B.
The name of the development, the name and address of the owner of
the property, and the name of the individual or firm preparing the
plan.
C.
The file or project number assigned by the firm that prepared the
plan.
D.
Certificate for approval by the Township Board of Supervisors or
designee. See Appendix 1, Certificate for Approval By East Hempfield
Township Board of Supervisors or Designee.
E.
Certificate, signature and seal of a qualified professional preparing
the stormwater management site plan. See Appendix 1, Stormwater Management
Designer Certification.
F.
The following signature block for the landowner, acknowledging that
the SWM facilities are fixtures that cannot be altered or removed
without prior approval by the Township. "I_____, hereby represent
that no person shall modify, remove, fill, landscape, or alter any
stormwater management BMPs, facilities, areas, or structures without
the written approval of East Hempfield Township."
G.
A note on the plan referencing a recorded stormwater operation and
maintenance (O&M) agreement that indicates the location and responsibility
for maintenance of the on-site and off-site facilities.
H.
A note informing the owner that the municipality shall have the right
of entry for the purposes of inspecting all stormwater conveyance,
treatment, or storage facilities.
I.
A location map, drawn to a scale of a minimum of one inch equals
2,000 feet, relating the plan to municipal boundaries, at least two
intersections of road centerline or other identifiable landmarks.
J.
Existing features. The following features shall be shown on all stormwater
management site plans and shall be shown on a separate sheet titled
"Existing Conditions." No proposed features shall be included on this
sheet.
(1)
In areas of disturbance, contours at intervals of one or two feet.
In areas of steep slopes (greater than 15%) and areas undisturbed,
five-foot contour intervals may be used.
(2)
The locations of all existing utilities (including on-lot disposal
systems and wells), sanitary sewers, and water lines and associated
easements.
(3)
An overlay showing soil names and boundaries.
(4)
Names of all adjacent landowners, property boundaries and locations
and dimensions of easements as indicated by a boundary survey.
(5)
Physical features including flood hazard boundaries, wetlands, sinkholes,
streams, lakes, ponds and other waterbodies, existing drainage courses,
karst features, areas of native vegetation including trees greater
than six inches diameter at breast height, woodlands, other environmentally
sensitive areas and the total extent of the upstream area draining
through the development site.
(6)
All existing man-made features within 200 feet of the development
site boundary.
K.
Proposed features.
(1)
Changes to the land surface and vegetative cover, including final
proposed contours at intervals of one or two feet in areas of disturbance.
In areas of steep slopes (greater than 15%) and areas undisturbed,
five-foot contour intervals may be used.
(2)
Proposed structures, roads, paved areas, buildings and other impervious
and semi-impervious areas.
(3)
The location of any proposed on-lot disposal systems, replacement
drainfield easements, and water supply wells.
(4)
A note indicating existing and proposed land use(s).
(5)
Plan and profile drawings of all proposed SWM facilities, including
BMPs, drainage structures, pipes, open channels, and swales.
(6)
Where pervious pavement is to be installed, pavement material and
construction specifications shall be included.
(7)
The location of all existing and proposed easements, including drainage
easements, access easements and riparian corridor easements.
(8)
A planting plan shall be provided for all vegetated BMPs.
L.
The location of all E&S control facilities.
M.
Stormwater management facilities located within or affecting the
floodplain of any watercourse shall comply with the requirements of
the floodplain regulations provided in the Zoning Ordinance or any
future ordinances regulating construction or development within areas
of the Township subject to flooding.
N.
The minimum habitable floor elevations for all structures that would
be affected by a basin, other temporary impoundments, or open conveyance
systems where ponding may occur shall be two feet above the 100-year
water surface. If basement or underground facilities are proposed,
detailed calculations addressing the effects of the stormwater ponding
on the structure and waterproofing and/or floodproofing design information
shall be provided for review and approval.
O.
No outlet structure from a stormwater management facility, or swale,
shall discharge directly onto a Township or state roadway.
P.
A note indicating that all items needing inspection shall be coordinated
by the owner and/or contractor. All requests for required inspections
by the contractor are to be deemed as approved requests on behalf
of the owner.
Q.
The actual existing and proposed lot coverage in square feet, in
addition to the percentages, should clearly be shown on the data provided
on the plan. This should correlate to the design information in the
required post construction stormwater management report to be used
as a benchmark for all future impervious surface changes.
R.
When applicable, notation should be added to the plan stating that
"all impervious surfaces to be removed are to be removed full depth,
including any stone base" so as to receive credit as a post development
condition pervious surface in the stormwater management design. A
statement, signed by the owner and any successor, acknowledging that
the impervious surfaces to be removed full depth function as the SWM
facilities for this project and cannot be added back or altered or
increased unless a revised plan is approved by the municipality must
be provided.
S.
A note indicating construction site operators are required to control
waste at the construction site that may cause adverse impacts to water
quality. These wastes can include discarded building materials, concrete
washout, chemicals, litter, and sanitary waste.
T.
PCSM Title Blocks outlining each individual post-construction stormwater
management BMP and/or facility per Appendix 8.
A.
General description of the development site, including a description
of existing natural and hydrologic features and any environmentally
sensitive areas.
B.
General description of the overall SWM concept for the project, including
a description of permanent SWM techniques, nonstructural BMPs to be
employed and construction specifications of the materials to be used
for structural SWM facilities. The narrative shall include a description
of any treatment trains and how the facilities are meant to function
with each other to manage stormwater runoff.
C.
A summary narrative stating the effect of the project (in terms of
runoff volumes, water quality and peak flows) on adjacent properties
and on any existing Township SWM facilities that may receive runoff
from the development site.
D.
Where an NPDES Construction permit is required, a general description
of the overall approach, techniques, controls, BMPs, and methods for
managing nonstormwater generating activities (including, but not limited
to concrete washouts and saw-cutting operations), waste (including,
but not limited to solid waste and sanitary/septic waste), materials
(including, but not limited to fertilizers/herbicides), and related
inspection and maintenance activities.
E.
The effect of the project (in terms of runoff volumes, water quality
and peak flows) on adjacent properties and on any existing municipal
stormwater management facilities that may receive runoff from the
development site.
F.
Complete hydrologic, hydraulic, and structural computations for all
SWM facilities.
G.
Expected project time schedule.
H.
Project inspection schedule for all BMPs.
I.
Verification of an approved and proven to be implemented agricultural
erosion and sediment control plan or conservation plan and a manure
management plan or nutrient management plan for agricultural uses.
A.
In areas of carbonate geology, a detailed geologic evaluation prepared
by a registered Professional Geologist (PG) must be submitted as part
of the SWM site plan. The report shall include, but not limited to
the following:
B.
An NPDES and E&S Plan, including all approvals, as required by
25 Pa. Code Chapter 102, shall be provided to the municipality prior
to unconditional final plan approval.
C.
For any activities that require a DEP joint permit application and are regulated under Chapter 105 or Chapter 106, require a PennDOT highway occupancy permit, or require any other permit under applicable state or federal regulations, the permit(s) shall be part of the SWM site plan and must be obtained prior to unconditional final plan approval.
D.
For any activities that require a PennDOT highway occupancy permit,
the permit(s) shall be part of the SWM site plan and must be obtained
prior to unconditional SWM site plan approval. If PennDOT requires
that the Township be the permittee for such drainage facilities, the
applicant shall enter into an agreement, in recordable form, assuming
all of the obligations which PennDOT may place upon the Township as
permittee, including, but not limited to, long-term maintenance of
any such facilities, compliance with all conditions contained in the
permit, and indemnification of the Township for any costs or penalties
which PennDOT may seek to impose on the Township. The Township shall
have no obligation to make any applications to PennDOT.
E.
An operation and maintenance (O&M) plan that addresses the requirements
of this chapter. The O&M plan must be recorded in the Office of
the Recorder of Deeds.
F.
All SWM facilities must be located on a map and described in detail.
The content of the map(s) and computations shall include, but not
be limited to:
(1)
All calculations, assumptions and criteria used for the design of
the SWM facilities must be included for both predevelopment and post-development
conditions. If multiple facilities are used in conjunction with each
other, such as infiltration BMPs with vegetation-based management
practices, a summary narrative shall be included which describes the
construction sequence and how the facilities are meant to function
with each other to manage stormwater runoff.
(2)
When groundwater recharge methods such as seepage pits, beds or trenches
are used, the locations of existing and proposed septic tank infiltration
areas and wells must be shown. A minimum fifty-foot separation from
on-lot disposal system (OLDS) infiltration areas is required. Infiltration
rates shall be based upon perk and probe tests conducted at the site
of the proposed facility.
(3)
A description of how each permanent stormwater BMP will be operated
and maintained, and the identity of the person(s) responsible for
operations and maintenance.
Applicants are encouraged to schedule a pre-application meeting
to review the overall stormwater management concept with Municipal
staff/engineer. The pre-application meeting is not mandatory and shall
not constitute formal filing of a plan with the municipality. The
Township has the right to seek reimbursement for all pre-application
professional services incurred. Topics discussed may include the following:
A.
Available geological maps, plans and other available data.
B.
Findings of the site analysis including identification of any environmentally
sensitive areas, wellhead protection areas, riparian corridors, hydrologic
soil groups, existing natural drainageways, karst features, areas
conducive to infiltration to be utilized for volume control, etc.
C.
Results of infiltration tests.
D.
Applicable municipal Subdivision and Land Development and/or Zoning
ordinance provisions.
E.
The conceptual project layout, including proposed structural and
nonstructural BMPs.
A.
When a stormwater management site plan is required, the applicant
shall submit the following to the municipality:
(1)
One digital copy emailed to the Township and one digital copy emailed to the Township Engineer of the SWM site plan prepared in accordance with the requirements of Article IV of this chapter.
(2)
One digital copy emailed to the Township and one digital copy emailed
to the Township Engineer of all supplemental data.
(3)
All applicable fees (in accordance with the municipality's current
fee schedule).
B.
The SWM site plan shall be submitted in a format that is clear, concise,
legible, neat and well organized.
C.
The applicant is responsible for submitting plans to any other agencies
such as the Lancaster County Conservation District, PennDOT, DEP,
etc. when permits from these agencies are required. Final approval
shall be conditioned upon the applicant obtaining all necessary permits.
D.
Incomplete submissions as determined by the governing body or its designee, shall be returned to the applicant within 15 days, along with a statement that the submission is incomplete, and stating the deficiencies found. Otherwise, the application shall be deemed accepted for filing as of the date of submission. Acceptance of the application shall not, however, constitute an approval of the plan or a waiver of any deficiencies or irregularities. The applicant may appeal the municipality's decision not to accept a particular application in accordance with § 260-57 of this chapter.
E.
At its sole discretion and in accordance with this article, when
a SWM site plan is found to be deficient, East Hempfield Township
may either disapprove the submission and require a resubmission, or
in the case of minor deficiencies, East Hempfield Township may accept
submission of revisions.
A.
When the regulated activity constitutes a subdivision or land development
as defined in the East Hempfield Subdivision and Land Development
Ordinance, the SWM site plan and subdivision/land development plan
shall be processed concurrently according to the plan processing procedure
outlined in the Subdivision and Land Development Ordinance.
B.
When the regulated activity constitutes a small project the municipality
shall review and take action on the small project application within
45 days of filing.
C.
When the regulated activity does not constitute a subdivision or
land development or small project the Municipal Engineer shall review
the SWM site plan for conformance with the provisions of this chapter.
D.
Within 15 days of the meeting at which the SWM site plan application
is acted upon by the Board of Supervisors, written notice of the Board
of Supervisor's action shall be sent to the following individuals:
E.
If the Township disapproves the SWM site plan, the Township will
state the reasons for the disapproval in writing. The Township also
may approve the SWM site plan with conditions and, if so, shall provide
the acceptable conditions for approval in writing. Such conditional
approval shall be contingent upon the applicant's written acceptance
of the conditions.
A.
Revisions to a SWM site plan after submission but before Township action shall require a resubmission of the modified SWM site plan and be subject to review as specified in § 260-33 of this chapter.
B.
For the purposes of review deadlines, each resubmission (after submission
but before approval) shall constitute a new submission for the purposes
of time limits as set forth in the MPC and this chapter.
C.
Any substantial revisions to a SWM site plan after approval shall
be submitted as a new plan to the Township, accompanied by the applicable
review fee.
A.
The plans should clearly indicate the need for a pre-construction
meeting to be held prior to earth moving activities and include personnel
from the following:
B.
Upon approval by the Township, Stormwater Management Plans must be
recorded at the Lancaster County Recorder of Deeds office. Proof of
recordation must be provided to the Township.
Approval of a SWM site plan shall be valid for a period not to exceed five years. This time period shall commence on the date that the Township approves the SWM site plan. If a certificate of completion required by this chapter has not been submitted within the specified time period, then the Township may consider the SWM site plan disapproved and may revoke any and all permits issued by the Township. SWM site plans that are considered disapproved by the Township may be resubmitted in accordance with § 260-32 of this chapter.
A.
At the completion of the project, and as prerequisite for the release
of the financial security, the applicant shall provide certification
of completion from an engineer, landscape architect, surveyor or other
qualified person verifying that all permanent SWM facilities have
been constructed according to the plans and specifications and approved
revisions thereto.
B.
Upon receipt of the certificate of completion, and prior to release
of the remaining financial security the Township shall conduct a final
inspection to certify compliance with this chapter.
C.
Upon final approval of the stormwater management plan, and prior
to construction beginning, the applicant shall submit the plan for
recordation in the Office of the Recorder of Deeds. No release of
plans for recording will happen until a preconstruction meeting occurs.
No construction can begin until the preconstruction meeting happens
and the plans are recorded.
A.
Upon completion of the plan improvements the applicant shall submit
a record plan for recordation in the Office of the Recorder of Deeds.
The record plan must show the final design specifications for all
stormwater management facilities and be sealed by a registered professional
engineer. The submission of a digital record plan to the Township
is required, all coordinates as depicted on the plan shall be based
on the PA South Zone State Plane Coordinate System (NAD83 for horizontal
and NAVD88 for vertical). A .pdf and CAD file are required.
B.
Concurrently with the recordation of the record plan, the applicant
shall submit the SWM site plan for recordation in the Office of the
Recorder of Deeds, unless the site plan has already been recorded.
