[Ord. 266, 7/11/2005, § 401]
For any of the activities regulated by this Chapter 25B, 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 land disturbance activity may not proceed until the applicant or his/her agent has received written approval of a drainage plan from the municipality.
[Ord. 266, 7/11/2005, § 402]
Any regulated activity that meets the exception criteria in the following table is exempt from the drainage plan submission requirement of this Chapter 25B. This criterion shall apply to the total development even if development is to take place in phases. The date of the municipal ordinance adoption shall be the starting point from which to consider tracts as "parent tracts" in which future subdivisions and respective impervious area computations shall be cumulatively considered. Impervious areas existing on the "parent tract" prior to adoption of this Chapter 25B shall not be considered in cumulative impervious area calculations for exemption purposes. An exemption shall not relieve the applicant from implementing such measures as are necessary to protect health, safety, and property. This exemption shall not relieve the applicant from meeting the special requirements for watersheds drainage to high quality (HQ) or exceptional value (EV) waters (§ 25B-301, Subsection 12) and requirements for water quality (§ 25B-303), groundwater recharge (§ 25B-304), and streambank erosion (§ 25B-305).
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Stormwater Management Exemption Criteria
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Total Parcel Size
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Impervious Area Exemption
(square feet)
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< 1/4 acre
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1,200 square feet
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> 1/4 to 1 acre
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2,500 square feet
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> 1 acre
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5,000 square feet
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Exemptions shall be at the discretion of the municipality upon
review of site conditions, topography, soils, and other factors as
deemed appropriate by the municipality based upon comprehensive municipal
goals and strategies for local development.
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[Ord. 266, 7/11/2005, § 403]
1.
The drainage plan shall consist of all applicable calculations, maps,
and plans. A note on the maps shall refer to the associated computations
and erosion and sedimentation control plan by title and date. The
cover sheet of the computations and erosion and sedimentation control
plan shall refer to the associated maps by title and date. 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 be disapproved and returned to the applicant.
2.
The following items shall be included in the drainage plan:
A.
General.
(1)
General description of project.
(2)
General description 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 reviews
and approvals by the Conservation District.
(5)
A general description of 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 shall be prepared in a form that meets
the requirements for recording at the offices of the Recorder of Deeds
of Bucks County. The contents of the maps(s) shall include, but not
be limited to:
(1)
The location of the project relative to highways, municipalities,
or other identifiable landmarks.
(2)
Existing contours at intervals of two feet. In areas of steep
slopes (greater than 15%), five-foot contour intervals may be used.
(3)
Existing streams, lakes, ponds, or other bodies of water within
the project area.
(4)
Other physical features including flood hazard boundaries, sinkholes,
streams, 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 and boundaries.
(7)
Proposed changes to the land surface and vegetative cover, including
limits of earth disturbance and 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.
(18)
Overland drainage paths.
(19)
A minimum 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 sedimentation control facilities.
(21)
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 25B.
(22)
A statement, signed by the landowner, acknowledging the stormwater
management system to be a permanent fixture that can be altered or
removed only after approval of a revised plan by the municipality,
which shall be recorded with the record plan and which shall be applicable
to all future landowners.
(23)
The following signature block for the design engineer: (Design
Engineer), on this date (date of signature), has reviewed and hereby
certify that the drainage plan meets all design standards and criteria
of the East Branch Perkiomen Creek Watershed Act 167 Stormwater Management
Ordinance.
C.
Supplemental Information.
(1)
A written description of the following information shall be
submitted.
(2)
A soil erosion and sedimentation control plan, where applicable,
including all reviews and approvals, as required by DEP.
(4)
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.
(5)
A declaration of adequacy and highway occupancy permit from
the PennDOT District Office when the use 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.
(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.
(3)
All calculations, assumptions, and criteria used in the design
of the stormwater management facilities must be shown.
[Ord. 266, 7/11/2005, § 404]
1.
For all activities regulated by this Chapter 25B, the steps below shall be followed for submission. For any activities that require a DEP joint permit application and regulated under 25 Pa. Code, Chapter 105 (Dam Safety and Waterway Management), or 25 Pa. Code, Chapter 106 (Floodplain Management), of DEP's rules and regulations, require a PennDOT highway occupancy permit or require any other permit under applicable state or federal regulations, the proof of application for that, the permit(s) shall be part of the plan. The plan shall be coordinated with the state and federal permit process.
[Ord. 266, 7/11/2005, § 405]
1.
The municipal engineer shall review the drainage plan for consistency with the adopted East Branch Perkiomen Creek Watershed Act 167 Stormwater Management Plan. The municipality shall require receipt of a complete plan, as specified in this Chapter 25B.
2.
The municipal engineer shall review the drainage plan for any subdivision or land development against the municipal subdivision and land development ordinance provisions not superseded by this Chapter 25B.
3.
For activities regulated by this Chapter 25B, the municipal engineer shall notify the municipality in writing whether the drainage plan is consistent with the stormwater management plan. Should the drainage plan be determined to be consistent with the stormwater management plan, the municipal engineer will forward a review letter to the applicant with a copy to the municipality.
4.
Should the drainage plan be determined to be inconsistent or noncompliant with the stormwater management plan, the municipal engineer will forward a letter to the municipality with a copy to the applicant citing the reason(s) for the inconsistency or noncompliance. Any drainage plans receiving this decision may be revised by the applicant and resubmitted for reevaluation. The municipality will not grant approval to the proposal until its drainage plan is deemed consistent with this Chapter 25B.
5.
For regulated activities specified in § 25B-104 of this Chapter 25B, the municipal engineer shall notify the person in the municipality responsible for administering building permits in writing, within a time frame consistent with the municipal building code and/or municipal subdivision ordinance, whether the drainage plan is consistent with the stormwater management plan and forward a copy of the approval/disapproval letter to the applicant. Any disapproved drainage plan may be revised by the applicant and resubmitted consistent with this Chapter 25B.
6.
For regulated activities requiring a DEP joint permit application,
the municipal engineer shall notify DEP whether the drainage plan
is consistent with the stormwater management plan and forward a copy
of the review letter to the municipality and the applicant. DEP may
consider the municipal engineer's review comments in determining
whether to issue a permit.
7.
The municipality shall not approve any subdivision or land development for regulated activities specified in § 25B-104 of this Chapter 25B if the drainage plan has been found to be inconsistent with the stormwater management plan, as determined by the municipal engineer. All required permits from DEP must be obtained prior to approval of any subdivision or land development.
8.
The person in the municipality responsible for administering building permits shall not issue a building permit for any regulated activity specified in § 25B-104 of this Chapter 25B if the drainage plan has been found to be inconsistent with the stormwater management plan, as determined by the municipal engineer, or without considering the comments of the municipal engineer. All required permits from DEP must be obtained prior to issuance of a building permit.
9.
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, highway occupancy permit from the PennDOT
District Office, and any applicable permits from DEP.
10.
The municipality's approval of a drainage plan shall be valid for a period not to exceed two years. This two-year time period shall commence 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, and record drawings of these facilities have not been approved within this two-year time period, then the municipality may consider the drainage plan withdrawn and may revoke any and all permits. Drainage plans that are considered disapproved by the municipality shall be resubmitted in accordance with § 25B-407 of this Chapter 25B.
[Ord. 266, 7/11/2005, § 406]
1.
A modification to a submitted drainage plan for a development site that involves a change in stormwater management facilities or techniques, or that involves the relocation or redesign of stormwater management facilities, or that is necessary because soil or other conditions are not as stated on the drainage plan as determined by the municipal engineer, shall require a resubmission of the modified drainage plan consistent with § 25B-404 of this Chapter 25B and be subject to review as specified in § 25B-405 of this Chapter 25B.
2.
A modification to an already approved or disapproved drainage plan
shall be submitted to the municipality, accompanied by the applicable
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 municipality review fee.
[Ord. 266, 7/11/2005, § 407]
A disapproved drainage plan may be resubmitted, with the revisions addressing the municipal engineer's concerns documented in writing addressed to the municipality in accordance with § 25B-404 of this Chapter 25B and distributed accordingly and be subject to review as specified in § 25B-405 of this Chapter 25B. The applicable municipality review fee must accompany a resubmission of a disapproved drainage plan.
