For any regulated activity in the Neshaminy Creek and Delaware
River South Watershed, the preliminary and 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 shall
not be given and shall not proceed until a drainage plan for such
activity has been found by the Township to be consistent with the
stormwater management plan and the other applicable provisions of
this chapter, unless specifically exempted from the provisions of
this article.
A drainage plan generally shall describe the project, including sequencing to minimize stormwater impacts as described in § 430-504, calculations, maps and plans (which may comprise any number sheets). A note on the maps shall refer to the associated computations and erosion and sediment control plan by title and date. The cover sheet of the computations, erosion and sediment control plan and post-construction stormwater management plan shall refer to the associated maps by title and date. All drainage plans shall be submitted to the Township in a format that is clear, legible and well-organized so that compliance with this chapter may be readily ascertained. Failure to comply with this requirement shall be grounds for rejecting the drainage plan and denying approval. The following items shall be included in the drainage plan:
A.
General.
(1)
General description, in narrative form, of the project including those areas described in § 430-504B.
(2)
General description, in narrative form, of 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 required
reviews and approvals by the Conservation District.
(5)
A general description of nonpoint source pollution controls.
(6)
The drainage plan application and completed fee schedule form
and associated fee.
(8)
An operations and maintenance plan for all proposed best management
practices.
B.
Maps. Map(s) of the project area shall be submitted on sheets 24 inches by 36 inches in size and/or shall be prepared in a form that meets the requirements for recording at the offices of the Recorder of Deeds of Bucks County. If Chapter 440, Subdivision and Land Development, has more stringent criteria than the requirements listed below, 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 15%, 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 drainagecourses, 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 waterlines within 50 feet of property lines.
(6)
An overlay showing soil names, boundaries and soil 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 15%, 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 20 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 and all downgradient receiving
channels, swales, waters where stormwater runoff or drainage will
be discharged to.
(18)
Overland drainage patterns and swales and all downgradient receiving
channels, swales, waters where stormwater runoff or drainage will
be discharged to.
(19)
A fifteen-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.
(21)
The location of all post-construction stormwater management
facilities, BMPs, etc.
(22)
A note on the plan indicating the location and responsibility
for maintenance of stormwater management facilities that would be
located off site. All off-site facilities shall meet the performance
standards and design criteria specified in this chapter.
(23)
Post-construction stormwater management plans (aka "O&M
Plan"), erosion and sediment control plans, earth disturbance permits,
and NPDES permits/plans should be coordinated between Middletown Township,
BCCD (Bucks County Conservation District) and PA DEP (Pennsylvania
Department of Environmental Protection).
(24)
A statement, signed by the property owner or applicant, acknowledging
the stormwater management system, including all BMPs, are a permanent
fixture that can be altered or removed only after approval by the
Township designee of a revised plan, which shall be recorded with
the record plan and which shall be applicable to all future landowners.
(25)
The following signature block for the Design Engineer: "I, (Design
Engineer), on this date (date of signature), hereby certify that the
drainage plan meets all design standards and criteria of the Neshaminy
Creek Watershed Act 167 Stormwater Management Ordinance and/or Delaware
South River Watershed Act 167 Stormwater Management Ordinance."
(26)
All plans shall include a plan note stating that the municipality
shall have the right to enter private property to inspect and repair,
if necessary, any stormwater management facility.
(27)
All plans shall note that the stormwater management facilities
are a permanent part of the development and shall not be removed,
altered or modified.
C.
Supplemental information to be submitted to the Township.
(1)
A written description of the following information shall be
submitted by the applicant and shall include:
(a)
The overall stormwater management concept for the project designed in accordance with § 430-504.
(b)
Stormwater runoff computations as specified in this chapter.
(c)
Stormwater management techniques to be applied both during and
after development.
(d)
Expected project time schedule.
(e)
Development stages or project phases, if so proposed.
(2)
An erosion and sediment control plan, when applicable, including
all reviews and approvals as may be required by DEP.
(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 PennDOT District Office when utilization of a PennDOT storm drainage
system is proposed.
D.
Stormwater management facilities.
(1)
All stormwater management facilities must be located on a plan
and described in detail. Plan at a minimum should include pre- and
post-drainage area maps, an overall post-construction stormwater management
(PCSWM) plan, stormwater details sheets, landscaping (if low-impact
development or bioinfiltration, bioretention, or vegetated or wetland
basins are proposed).
(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 front, side and rear yard setback
distances should be identified for distances to wells and septic areas,
etc.
(3)
All calculations, assumptions and criteria used in the design
of the stormwater management facilities must be shown.
The Township 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, where required or applicable, shall
be part of the plan:
(1)
NPDES permit for stormwater discharges from construction activities.
(2)
DEP joint permit application.
(3)
PennDOT Highway Occupancy Permit.
(4)
Chapter 105 (Dam Safety and Waterway Management).
(5)
Chapter 106 (Floodplain Management).
(6)
Any other permit under applicable state or federal regulations.
(7)
E&S BCCD permit.
B.
The plan shall be coordinated with the state and federal permit process
and the Township SALDO review process.
C.
For projects that involve regulated activities and require SALDO
approval, the drainage plan shall be submitted by the applicant as
part of the preliminary plan submission and final plan submission.
D.
For projects that involve regulated activities but that do not require SALDO approval, see § 430-501 of this chapter for requirement(s) for submission and approval of drainage plan. Six complete copies of the drainage plan shall be submitted to the Township Department of Licenses and Inspections, which shall distribute the plan as follows:
E.
The Township designee shall review the drainage plan and fees for
completeness only.
B.
The Township Engineer shall review the drainage plan for any subdivision or land development against the provisions of Chapter 440, Subdivision and Land Development, not otherwise superseded by this chapter.
C.
Following his review of the drainage plan, the Township Engineer
shall notify the applicant and the Township Manager in writing whether
the drainage plan is consistent with the stormwater management plan
and the other applicable provisions of this chapter. If the Township
Engineer determines that the drainage plan is inconsistent or noncompliant
with, or does not meet or exceed the criteria of the stormwater management
plan and the other applicable provisions of this chapter, the Township
Engineer shall in his letter specify the reason(s) and specific ordinance
sections for the inconsistency or noncompliance. Such a determination
shall constitute a disapproval of the drainage plan.
D.
The Township Engineer shall issue his written approval or disapproval within 45 days, or such time frame that is consistent with the Township Building Code and/or Chapter 440, Subdivision and Land Development, whichever is longer. Any drainage plan that has been disapproved may be revised and resubmitted consistent with this chapter.
E.
For regulated activities under this chapter that require an NPDES
permit application, the applicant shall forward a copy of the Township
Engineer's letter to the Conservation District, stating that
the drainage plan is consistent with the stormwater management plan.
PA DEP and the Bucks County Conservation District may consider the
Township Engineer's review comments in determining whether to
issue a permit.
F.
The Township shall not grant preliminary or final approval to any
subdivision or land development for regulated activities unless and
until the drainage plan has been found by the Township Engineer to
be consistent with the stormwater management plan and the applicable
provisions of this chapter. All required permits from DEP must be
obtained prior to final approval of any subdivision or land development.
G.
No building or other permit for any regulated activity shall be approved
and issued by the Township unless and until the drainage plan has
been found to be consistent with the stormwater management plan and
the other applicable provisions of this chapter. All required permits
from DEP must be obtained prior to issuance of a building permit.
H.
The applicant shall be responsible for completing as-built drawings
of all stormwater management facilities included in the approved drainage
plan. The record drawings (aka "as-built drawings") and an explanation
of any discrepancies with the design plans shall be submitted to the
Township Engineer for final approval. In no case shall the Township
approve the record drawings until the Township receives a copy of
an approved declaration of adequacy from the Township Engineer and/or
highway occupancy permit from the PennDOT District Office, NPDES permit,
and any other applicable permits or approvals from DEP or the Bucks
County Conservation District. The above permits and approvals must
be based on the record drawings.
I.
The Township's approval of a drainage plan shall be valid for a period not to exceed five years commencing on the date that the Township signs the approved drainage plan. If stormwater management facilities included in the approved drainage plan have not been constructed or, if constructed, and record drawings of these facilities have not been approved within this five-year time period, then the Township 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 Township Engineer shall be resubmitted in accordance with § 430-406 of this chapter.
A.
A modification to a submitted drainage plan under review by the Township for a development site that involves the following shall require a resubmission to the Township of a modified drainage plan consistent with § 430-403 of this chapter and be subject to review as specified in § 430-404 of this chapter:
B.
A modification to an already approved or to an inconsistent or noncompliant
drainage plan shall be submitted to the Township, accompanied by the
applicable Township review and inspection fee. A modification to a
drainage plan for which a formal action has not been taken by the
Township shall be submitted to the Township, accompanied by the applicable
Township review and inspection fee.
An inconsistent or noncompliant drainage plan may be resubmitted with the revisions addressing the Township Engineer's concerns documented in writing and addressed to the Township Zoning Officer in accordance with § 430-403 of this chapter and distributed accordingly and be subject to review as specified in § 430-404 of this chapter. The applicable Township review and inspection fee must accompany a resubmission of an inconsistent or noncompliant drainage plan.
