For any of the activities regulated by this Part 2, 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, applicant, or his/her agent has received written approval of a SWM site plan from the municipality and an adequate erosion and sediment control plan review by the Conservation District unless the project qualifies for an exemption in § 281-20.
The SWM site plan shall consist of a general description of the project, including sequencing items described in § 281-32, calculations, maps, and plans. 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 and erosion and sediment 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. The following items shall be included in the SWM site plan, when applicable:
A. 
General.
(1) 
General description of the project, including those areas described in § 281-32B.
(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.
(6) 
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 2.
(7) 
The SWM site plan application and completed fee schedule form and associated fee (Part 2 Appendix C-1).[1]
[1]
Editor's Note: Said appendix is on file in the Township offices.
(8) 
The SWM site plan checklist (Appendix C-2)[2].
[2]
Editor's Note: Said appendix is on file in the Township offices.
B. 
Maps or plan sheets. Map(s) or plan sheets 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 Delaware County. If the SALDO has more stringent criteria than this Part 2, 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 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 waterlines within 50 feet of property lines.
(6) 
An overlay showing soil names and boundaries.
(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.
(18) 
Overland drainage patterns and swales.
(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) 
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 Part 2.
(22) 
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 erosion and sediment control plan must be submitted to the Conservation District for a determination of adequacy.
(23) 
The following signature block signed and sealed by the qualified licensed professional responsible for the preparation of the SWM site plan:
"I, (licensed professional), on this date (date of signature), hereby certify that the SWM site plan meets all design standards and criteria of the Nether Providence Township Stormwater Management Ordinance." [Note: license stamp should be included here.]
(24) 
The following signature block for the municipality:
"On behalf of Nether Providence Township, (municipal official or designee), on this date (date of signature), has reviewed and hereby certifies to the best of my knowledge that the SWM site plan meets all design standards and criteria of the Nether Providence Township Stormwater Management Ordinance."
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:
(a) 
The overall stormwater management concept for the project designed in accordance with § 281-32.
(b) 
Stormwater runoff computations as specified in this Part 2.
(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.
(f) 
An operations and maintenance plan in accordance with § 281-51 of this Part 2.
(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 stormwater management facilities must be located on a plan and described in detail.
(2) 
The locations of existing and proposed septic tank infiltration areas and wells must be shown.
(3) 
All calculations, assumptions, loading ratios (guidelines presented in the PA BMP Manual), and criteria used in the design of the stormwater management facilities must be shown.
The municipality shall require receipt of a complete SWM site plan, as specified in this Part 2.
A. 
Proof of application or documentation of required permit(s) or approvals for the programs listed below shall be part of the plan, if applicable:
(1) 
NPDES permit for stormwater discharges from construction activities.
(2) 
PADEP permits as needed.
(a) 
PADEP joint permit application.
(b) 
Chapter 105 (Dam Safety and Waterway Management).
(c) 
Chapter 106 (Floodplain Management).
(3) 
PennDOT highway occupancy permit.
(4) 
Any other permit under applicable state or federal regulations.
B. 
The plan shall be coordinated with the state and federal permit process and the municipal SALDO review process. The process implementing the provisions in this Part 2 is illustrated in Appendixes D-1 and D-2.[1]
[1]
Editor's Note: Said appendixes are on file in the Township offices.
C. 
For projects that require SALDO approval, the SWM site plan shall be submitted by the applicant as part of the preliminary plan submission where applicable for the regulated activity.
D. 
For regulated activities that do not require SALDO approval, see § 281-29, General requirements.
E. 
Five copies of the SWM site plan shall be submitted by the applicant for review in accordance with established criteria and procedures:
(1) 
Two copies to the municipality accompanied by the requisite municipal review fee, as specified in this Part 2.
(2) 
Two copies to the County Conservation District.
(3) 
One copy to the Municipal Engineer.
F. 
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. 
SWM plans shall be submitted to the municipality for review by the Municipal Engineer for consistency with this Part 2 and the respective Act 167 stormwater management plan. Any plan found incomplete may not be accepted for review and may be returned to the applicant. The Municipal Engineer will review the SWM site plan for any subdivision or land development against the municipal SALDO provisions not otherwise superseded by this Part 2.
B. 
The applicant shall respond to the Conservation District comments on the SWM site plan prior to being considered for final approval by the municipality.
C. 
For activities regulated by this Part 2 (§ 281-20), the Municipal Engineer will notify the applicant and the municipality, in writing, with a copy to the Building Permit Officer, within 15 calendar days, whether the SWM site plan is consistent with the stormwater management plan.
(1) 
If the Municipal Engineer determines that the SWM site plan is consistent with the Stormwater Management Ordinance, the Municipal Engineer will forward a letter of consistency to the municipality, who will then forward a copy to the applicant.
(2) 
If the Municipal Engineer determines that the SWM site plan is inconsistent or noncompliant with the Stormwater Management Ordinance, the Municipal Engineer will forward a letter to the municipality, with a copy to the applicant, citing the reason(s) and specific ordinance sections for the inconsistency or noncompliance. Inconsistency or noncompliance may be due to inadequate information to make a reasonable judgment as to compliance with the stormwater management plan. Any SWM site plans that are inconsistent or noncompliant may be revised by the applicant and resubmitted when consistent with this Part 2.
D. 
For regulated activities under this Part 2 that require an NPDES permit application, the applicant shall forward a copy of the Municipal Engineer's letter stating that the SWM site plan is consistent with the Stormwater Management Ordinance to the Conservation District. PADEP and the Conservation District may consider the Municipal Engineer's review comments in determining whether to issue a permit.
E. 
The municipality will not grant preliminary or final approval to any subdivision or land development for regulated activities specified in this Part 2 if the SWM site plan has been found by the Municipal Engineer to be inconsistent with the Stormwater Management Ordinance. All required permits from PADEP must be obtained prior to approval of any subdivision or land development.
F. 
No building permits for any regulated activity specified in this Part 2 will be approved by the municipality if the SWM site plan has been found to be inconsistent with the Stormwater Management Ordinance, 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 PADEP must be obtained prior to issuance of a building permit.
G. 
The applicant shall be responsible for completing record drawings of all stormwater management facilities included in the approved SWM site 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 will 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 PADEP or the Conservation District. The above permits and approvals must be based on the record drawings.
H. 
The municipality's approval of a SWM site plan shall be valid for a period not to exceed five years commencing on the date that the municipality signs the approved SWM site plan. If stormwater management facilities included in the approved SWM site plan have not been constructed, or if constructed, record drawings of these facilities have not been approved within this five-year time period, then the municipality may consider the SWM site plan inconsistent or noncompliant and may revoke any and all permits. SWM site plans that are determined to be inconsistent or noncompliant by the municipality shall be resubmitted in accordance with § 281-45 of this Part 2.
I. 
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 2, the municipality will not approve the SWM site plan unless it determines that green infrastructure and LID practices are not practicable.
A. 
A revision to a submitted SWM site plan under review by the municipality for a development site that involves the following shall require a resubmission to the municipality of a revised SWM site plan consistent with § 281-42 of this Part 2 and be subject to review as specified in § 281-43 of this Part 2:
(1) 
Change in stormwater management facilities or techniques;
(2) 
Relocation or redesign of stormwater management facilities; or
(3) 
Is necessary because soil or other conditions are not as stated on the SWM site plan as determined by the Municipal Engineer.
B. 
A revision to an already approved or inconsistent or noncompliant SWM site plan shall be submitted to the municipality, accompanied by the applicable municipal review and inspection fee. A revision to a SWM site 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 SWM site plan may be resubmitted with the revisions addressing the Municipal Engineer's concerns documented in writing. It must be addressed to the municipality in accordance with § 281-42 of this Part 2, distributed accordingly, and be subject to review as specified in § 281-43 of this Part 2. The applicable municipal review and inspection fee must accompany a resubmission of an inconsistent or noncompliant SWM site plan.