[Ord. No. 2022-09-03, 9/26/2022]
For any of the activities regulated by this Part, the preliminary or final approval of subdivision and/or land development plans, the issuance of any building or occupancy permit, the commencement of any earth disturbance, or activity may not proceed until the property owner or applicant or his/her agent has received written approval of an SWM site plan from the municipality. Approval of an adequate erosion and sediment (E&S) control plan review is required from the County Conservation District for all earth disturbance activities exceeding 5,000 square feet including an adequate erosion and sediment (E&S) control plan properly designed and implemented and available on site. For earth disturbance activities less than 5,000 square feet, an E&S control plan is not required, but the appropriate BMPs are still required to be implemented. Swimming pool projects under 2,000 square feet are exempt from Bucks County Conservation District E&S review.
[Ord. No. 2022-09-03, 9/26/2022]
1. 
The SWM site plan shall consist of a general description of the project, including calculations, maps, and plans. A note on the maps shall refer to the associated computations and E&S control plan by title and date. The cover sheet of the computations and E&S control plan shall refer to the associated maps by title and date. All SWM site plan materials shall be submitted to the municipality in a format that is clear, concise, legible, neat, and well organized; otherwise, the SWM site plan shall not be accepted for review and shall be returned to the applicant.
2. 
The following items shall be included in the SWM site plan:
A. 
General.
(1) 
General description of the project including plan contents described in Subsection B.
(2) 
General description of proposed SWM techniques to be used for SWM facilities.
(3) 
Complete hydrologic and hydraulic computations for all SWM facilities.
(4) 
All reviews and letters of adequacy from the Conservation District for the erosion and sedimentation plan as required by New Britain Township, county or state regulations.
(5) 
A general description of proposed nonpoint source pollution controls.
(6) 
Appropriate sections from the municipality's Subdivision and Land Development Ordinance,[1] and other applicable local ordinances, shall be followed in preparing the SWM site plan.
[1]
Editor's Note: See Ch. 22, Subdivision and Land Development.
B. 
Plans. SWM site plans shall provide the following information:
(1) 
The overall stormwater management concept for the project.
(2) 
A determination of natural site conditions and stormwater management needs. This shall include, but not be limited to:
(a) 
Site Features.
1) 
The location of the project relative to highways, municipal boundaries or other identifiable landmarks.
2) 
The locations of all existing and proposed utilities, sanitary sewers, and water lines on site and to within 50 feet of property lines.
3) 
Proposed structures, roads, paved areas, and buildings.
4) 
The total tract boundary and size with distances marked to the nearest foot and bearings to the nearest degree.
5) 
Plan and profile drawings of all SWM BMP's, including drainage structures, pipes, open channels, and swales. At a minimum this should include pre- and post-drainage area maps, an overall post construction stormwater management plan, stormwater details sheets, and landscape plans (if proposing bioretention facilities, low impact development, bioretention, or vegetative basins).
6) 
The locations and minimum setback distances of existing and proposed on-lot wastewater facilities and water supply wells.
7) 
The location of all erosion and sediment control facilities.
8) 
The location of proposed septic tank infiltration areas and wells in cases where groundwater recharge measures such as seepage pits, beds or trenches are proposed.
(b) 
Natural Site Conditions.
1) 
An existing resource and site analysis map (ERSAM) showing environmentally sensitive areas including, but not limited to:
a) 
Steep slopes.
b) 
Ponds.
c) 
Lakes.
d) 
Streams.
e) 
Wetlands.
f) 
Hydric soils.
g) 
Hydrologic soil groups A and B.
h) 
Vernal pools.
i) 
Stream buffers.
j) 
Open channels.
k) 
Existing recharge areas.
l) 
Floodplains.
The area of each of these sensitive areas shall be calculated and should be consistent with the runoff volume calculation § 26-123, Subsection 2C(1).
2) 
A detailed site evaluation for projects proposed in areas of frequent flooding, Karst topography, and other environmentally sensitive areas, such as brownfields and source water protection areas.
3) 
Existing and proposed contour lines (two feet).
4) 
The total extent of the drainage area upstream from the site and all down gradient receiving channels, swales and waters to which stormwater runoff or drainage will be discharged.
(c) 
Stormwater runoff design computations and documentation as specified in this Part, or as otherwise necessary to demonstrate that the maximum practicable measures have been taken to meet the requirements of this Part, including the recommendations and general requirements in § 26-121.
(d) 
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 stormwater conveyance system that may be affected by the project.
C. 
The format of the plan shall include the following:
(1) 
The expected project time schedule.
(2) 
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.
(3) 
The date of submission.
(4) 
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.
(5) 
A north arrow.
(6) 
An access easement around all stormwater management facilities is required that would provide ingress to and egress from a public right-of-way. The size of the easement shall be commensurate with the maintenance and access requirements determined in the design of the BMP.
(7) 
A key map showing all existing man-made features beyond the property boundary that would be affected by the project.
(8) 
A note on the plan indicating the location and responsibility for maintenance of stormwater management facilities. All facilities shall meet the performance standards and design criteria specified in this Part.
(9) 
The following signature block for the design engineer: "I, (Design Engineer), on this date (date of signature), hereby certify that the SWM site plan meets all design standards and criteria of The Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance or Plan."
(10) 
A statement signed by the applicant acknowledging that any revision to the approved SWM site plan must be approved by the municipality and that a revised E&S plan must be submitted to the Conservation District.
(11) 
A justification must be included in the SWM site plan if BMPs other than green infrastructure methods and LID practices are proposed to achieve the volume, rate and water quality controls under this Part.
D. 
A soil erosion and sediment control plan, where applicable, as prepared for and submitted to the approval authority.
E. 
The SWM site plan shall include an operations and maintenance (O&M) plan for all existing and proposed physical stormwater management facilities, as well as schedules and costs for O&M activities. This plan shall address long-term ownership and responsibilities for O&M.
[Ord. No. 2022-09-03, 9/26/2022]
1. 
The municipality requires submission of a complete SWM site plan, as specified in this Part.
A. 
Proof of application or documentation of required permit(s) or approvals for the programs listed below shall be part of the plan:
(1) 
NPDES Permit for Stormwater Discharges from Construction Activities.
(2) 
Any other permit under applicable state or federal regulations.
B. 
Six copies of the SWM site plan shall be submitted to the following agencies:
(1) 
Two copies to the municipality accompanied by the requisite municipal review fee, as specified in this Part.
(2) 
Two copies to the County Conservation District.
(3) 
One copy to the Municipal Engineer (where applicable).
(4) 
One copy to the County Planning Commission if the regulated activity is also required to submit a subdivision and/or land development plan to the Planning Commission in accordance with the Pennsylvania Municipal Planning Code.[1]
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
C. 
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.
D. 
Additional copies shall be submitted as requested by the municipality or PADEP.
[Ord. No. 2022-09-03, 9/26/2022]]
1. 
The SWM site plan shall be reviewed by a qualified professional on behalf of the municipality for consistency with the provisions of this Part. After review, the qualified professional shall provide a written recommendation for the municipality to approve or disapprove the SWM site plan. If it is recommended to disapprove the SWM site plan, the qualified professional shall state the reasons for the disapproval in writing. The qualified professional also may recommend approval of the SWM site plan with conditions and, if so, shall provide the acceptable conditions for approval in writing. The SWM site plan review and recommendations shall be completed within the time allowed by the Municipalities Planning Code[1] for reviewing subdivision plans.
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
2. 
The municipality will notify the applicant in writing within 45 days whether the SWM site plan is approved or disapproved. If the SWM site plan involves a subdivision and land development plan, the notification period is 90 days. If a longer notification period is provided by other statute, regulation, or ordinance, the applicant will be so notified by the municipality. If the municipality disapproves the SWM site plan, the municipality shall cite the reasons for disapproval in writing. The municipality also may approve the SWM site plan with conditions and, if so, shall provide the acceptable conditions for approval in writing.
3. 
For any SWM site plan that proposes to use any BMPs other than green infrastructure and LID practices to achieve the volume and rate controls required under this Part, the municipality will not approve the SWM site plan unless it determines that green infrastructure and LID practices are not practicable.
[Ord. No. 2022-09-03, 9/26/2022]
A modification to a submitted SWM site plan that involves a change in SWM BMPs or techniques, or that involves the relocation or redesign of SWM BMPs, or that is necessary because soil or other conditions are not as stated on the SWM site plan as determined by the municipality, shall require a resubmission of the modified SWM site plan in accordance with this Subpart.
[Ord. No. 2022-09-03, 9/26/2022]
A disapproved SWM site plan may be resubmitted, with the revisions addressing the municipality's concerns, to the municipality in accordance with this Subpart. The applicable review fee must accompany a resubmission of a disapproved SWM site plan.
[Ord. No. 2022-09-03, 9/26/2022]
The municipality's approval of an SWM site plan authorizes the regulated activities contained in the SWM site plan for a maximum term of validity of five years following the date of approval. The municipality 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 the municipality signs the approval for an SWM site plan. If an approved SWM site plan is not completed according to this § 26-137 within the term of validity, the municipality this may consider the SWM site plan disapproved and may revoke any and all permits. SWM site plans that are considered disapproved by the municipality shall be resubmitted in accordance with § 26-136 of this Part.