[Amended 7-12-2012 by Ord. No. 2012-03]
For any of the activities regulated by this
chapter, the preliminary or final approval of subdivision and/or land
development plans, the issuance of any building or occupancy permit,
or the commencement of any earth disturbance activity may not proceed
until the property owner or applicant or his/her agent has received
written approval of a drainage plan from the municipality, obtained
an NPDES permit for stormwater discharges associated with construction
activities, if greater than one acre of land disturbance, from the
local Conservation District and/or DEP, and an adequate erosion and
sediment control plan review by the Conservation District. Application
for approval of a drainage plan shall be submitted on a form supplied
by the Township.
The drainage plan shall consist of a general description of the project, including sequencing items described in § 228-19, calculations, maps, and plans. All drainage plan materials shall be submitted to the municipality in a format that is clear, concise, legible, neat, and well organized; otherwise, the drainage plan shall not be accepted for review and shall be returned to the applicant. The following items shall be included in the drainage plan:
A.
General.
(2)
General description of proposed permanent stormwater
management techniques, including construction specifications of the
materials to be used for stormwater management facilities.
(3)
Complete hydrologic, hydraulic, and structural computations
for all stormwater management facilities.
(4)
An erosion and sediment control plan, including all
reviews and letters of adequacy from the Conservation District.
(5)
A general description of proposed nonpoint source
pollution controls.
B.
Maps. Map(s) of the project area shall be submitted
on twenty-four-inch by thirty-six-inch sheets and/or shall be prepared
in a form that meets the requirements for recording at the offices
of the Recorder of Deeds of Montgomery County. If the SALDO has more
stringent criteria than this chapter, then the more stringent criteria
shall apply. The contents of the map(s) shall include, but not be
limited to:
(1)
The location of the project relative to highways,
municipal boundaries, or other identifiable landmarks.
(2)
Existing contours at intervals of two feet. In areas
of slopes greater than 25%, five-foot contour intervals may be used.
(3)
Existing streams, lakes, ponds, or other waters of
the commonwealth within the project area.
(4)
Other physical features, including flood hazard boundaries,
stream buffers, existing drainage courses, areas of natural vegetation
to be preserved, and the total extent of the upstream area draining
through the site.
(5)
The locations of all existing and proposed utilities,
sanitary sewers, and water lines within 50 feet of property lines.
(6)
An overlay showing soil names, boundaries and limitations
(in tabular format).
(7)
Limits of earth disturbance, including the type and
amount of impervious area that would be added.
(8)
Proposed structures, roads, paved areas, and buildings.
(9)
Final contours at intervals of two feet. In areas
of steep slopes (greater than 25%), five-foot-contour intervals may
be used.
(10)
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.
(11)
The date of submission.
(12)
A graphic and written scale of one inch equals
no more than 50 feet; for tracts of 100 acres or more, the scale shall
be one inch equals no more than 100 feet.
(13)
A North arrow.
(14)
The total tract boundary and size with distances
marked to the nearest foot and bearings to the nearest degree.
(15)
Existing and proposed land use(s).
(16)
A key map showing all existing man-made features
beyond the property boundary that would be affected by the project.
(17)
Location of all open channels, as well as indicating
where they are draining after they leave the site (storm sewer, defined
drainage swale, stream channel, waters of the commonwealth, etc.).
(18)
Overland drainage patterns and swales.
(19)
A twenty-foot-wide access easement around all
stormwater management facilities that would provide ingress to and
egress from a public right-of-way.
(20)
The location of all erosion and sediment control
facilities and all post-construction stormwater management facilities,
BMPs, systems, etc.
(21)
A note on the plan indicating the location and
responsibility for maintenance of stormwater management facilities
that would be located off site. All offsite facilities shall meet
the performance standards and design criteria specified in this chapter.
(22)
A statement, signed by the applicant, acknowledging
that any revision to the approved post-construction stormwater management
plan must be approved by the municipality and the Conservation District
and/or DEP (if greater than one acre of land disturbance), and that
a revised erosion and sediment control plan must be submitted to the
Conservation District for a determination of adequacy.
(23)
The following signature block for the design
engineer:
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"I, (Design Engineer), on this date (date of
signature), hereby certify that the drainage plan meets all design
standards and criteria of the Upper Frederick Township Stormwater
Management Ordinance."
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C.
Supplemental information to be submitted to the municipality.
(1)
A written description of the following information
shall be submitted by the applicant and shall include:
(2)
An erosion and sediment control plan.
(3)
A description of the effect of the project (in terms
of runoff volumes and peak flows) on adjacent properties and on any
existing municipal stormwater collection system that may receive runoff
from the project site.
(4)
A declaration of adequacy and highway occupancy permit
from the Pennsylvania Department of Transportation (PennDOT) District
office when utilization of a PennDOT storm drainage system is proposed.
D.
Stormwater management facilities.
(1)
All PCSWM BMP facilities must be located on a plan
and described in detail. The PCSWM plan package should include at
a minimum pre- and post-drainage area plans, an overall PCSWM plan,
PCSWM details sheets, landscaping or conservation plans, etc.
(2)
When infiltration measures such as seepage pits, beds,
or trenches are used, the locations of existing and proposed septic
tank, infiltration areas and wells must be shown. Minimum setback
distances should be identified from water supply wells, septic areas,
and any adjacent or downgradient buildings and/or structures with
below grade floors or inhabitable space.
(3)
All calculations, assumptions, and criteria used in
the design of the stormwater management facilities must be shown.
The municipality shall require receipt of a
complete drainage plan, as specified in this chapter.
A.
Proof of application or documentation of required
permit(s) or approvals for the programs listed below shall be part
of the plan:
B.
The plan shall be coordinated with the state and federal
permit process and the municipal SALDO review process.
C.
For projects that require SALDO approval, the drainage
plan shall be submitted by the applicant as part of the preliminary
plan submission where applicable for the regulated activity.
E.
Any submissions to the agencies listed above that
are found to be incomplete shall not be accepted for review and shall
be returned to the applicant with a notification in writing of the
specific manner in which the submission is incomplete.
A.
The Municipal Engineer shall review the drainage plan
for consistency with this chapter.
B.
The Municipal Engineer shall review the drainage plan
for any subdivision or land development against the municipal SALDO
provisions not otherwise superseded by this chapter.
C.
The Conservation District, in accordance with established
criteria and procedures, shall review the drainage plan for consistency
with stormwater management and erosion and sediment pollution control
requirements and provide comments to the municipality. Such comments
shall be considered by the municipality prior to final approval of
the drainage plan.
D.
For activities regulated by this chapter, the Municipal
Engineer shall notify the applicant and the municipality in writing,
within 45 calendar days, whether the drainage plan is consistent with
this chapter.
(1)
If the Municipal Engineer determines that the drainage
plan is consistent with this chapter, the Municipal Engineer shall
forward a letter of consistency to the Municipal Secretary who will
then forward a copy to the applicant.
(2)
If the Municipal Engineer determines that the drainage
plan is inconsistent or noncompliant with this chapter, the Municipal
Engineer shall forward a letter to the Municipal Secretary with a
copy to the applicant citing the reason(s) and specific sections of
this chapter for the inconsistency or noncompliance. Inconsistency
or noncompliance may be due to inadequate information to make a reasonable
judgment as to compliance with this chapter. Any drainage plans that
are inconsistent or noncompliant may be revised by the applicant and
resubmitted when consistent with this chapter. The Municipal Secretary
shall then notify the applicant of the Municipal Engineer's findings.
Any inconsistent or noncompliant drainage plans may be revised by
the applicant and resubmitted consistent with this chapter.
E.
For regulated activities specified in § 228-5 of this chapter that require a building permit, the Municipal Engineer shall notify the Municipal Building Permit Officer in writing, within a time frame consistent with the municipal Building Code and/or municipal SALDO, whether the drainage plan is consistent with this chapter. The Municipal Building Permit Officer shall forward a copy of the consistency/inconsistency letter to the applicant. Any drainage plan deemed inconsistent may be revised by the applicant and resubmitted consistent with this chapter.
F.
For regulated activities under this chapter that require
an NPDES permit application, the applicant shall forward a copy of
the Municipal Engineer's letter stating that the drainage plan is
consistent with this chapter to the Conservation District and/or DEP.
In addition, a short summary of the proposed post-construction stormwater
management design and proposed BMPs should also be forwarded to the
Conservation District and/or DEP. DEP and the Conservation District
may consider the Municipal Engineer's review comments in determining
whether to issue a permit.
G.
The municipality shall not grant preliminary or final approval to any subdivision or land development for regulated activities specified in § 228-5 of this chapter if the drainage plan has been found by the Municipal Engineer to be inconsistent with this chapter. All required permits from DEP must be obtained prior to approval of any subdivision or land development.
H.
No building permits for any regulated activity specified in § 228-5 of this chapter shall be approved by the municipality if the drainage plan has been found to be inconsistent with this chapter, as determined by the Municipal Engineer and Conservation District, or without considering the comments of the Municipal Engineer and Conservation District. All required permits from DEP must be obtained prior to issuance of a building permit.
I.
The applicant shall be responsible for completing
record drawings of all stormwater management facilities included in
the approved drainage plan. The record drawings and an explanation
of any discrepancies with the design plans shall be submitted to the
Municipal Engineer for final approval. In no case shall the municipality
approve the record drawings until the municipality receives a copy
of an approved declaration of adequacy and/or highway occupancy permit
from the PennDOT District office, NPDES permit, and any other applicable
permits or approvals from DEP or the Conservation District. The above
permits and approvals must be based on the record drawings.
J.
The municipality's approval of a drainage plan shall be valid for a period not to exceed two years commencing on the date that the municipality signs the approved drainage plan. If stormwater management facilities included in the approved drainage plan have not been constructed, or if constructed, record drawings of these facilities have not been approved within this two-year time period, then the municipality may consider the drainage plan inconsistent or noncompliant and may revoke any and all permits. Drainage plans that are determined to be inconsistent or noncompliant by the municipality shall be resubmitted in accordance with § 228-15 of this chapter.
A.
A modification to a submitted drainage plan under review by the municipality for a development site that involves the following shall require a resubmission to the municipality of a modified drainage plan consistent with § 228-12 of this chapter and be subject to review as specified in § 228-13 of this chapter:
B.
A modification to an already approved or inconsistent
or noncompliant drainage plan shall be submitted to the municipality,
accompanied by the applicable municipal review and inspection fee.
A modification to a drainage plan for which a formal action has not
been taken by the municipality shall be submitted to the municipality
accompanied by the applicable municipal review and inspection fee.
An inconsistent or noncompliant drainage plan may be resubmitted with the revisions addressing the Municipal Engineer's concerns documented in writing. It must be addressed to the Municipal Secretary in accordance with § 228-12 of this chapter, distributed accordingly, and be subject to review as specified in § 228-13 of this chapter. The applicable municipal review and inspection fee must accompany a resubmission of an inconsistent or noncompliant drainage plan.
