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, applicant, or his/her agent has received written approval of a stormwater management (SWM) site plan from Newtown Township and an adequate erosion and sediment control plan review by the Delaware County Conservation District unless the project qualifies for an exemption.
The SWM site plan shall consist of a general description of the project including sequencing items, 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 Newtown Township 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.
(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 Delaware County Conservation District.
(5) 
A general description of proposed nonpoint source pollution controls.
(6) 
The SWM site plan application and completed fee schedule form and associated fee (Appendix C-1).[1]
[1]
Editor's Note: Said appendix is included as an attachment to this chapter.
(7) 
The SWM site plan checklist (Appendix C-2).[2]
[2]
Editor's Note: Said appendix is included as an attachment to this chapter.
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 with the Recorder of Deeds of Delaware County. If the Township's subdivision and land development requirements are more stringent 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, Township 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 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 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 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 chapter.
(22) 
A statement, signed by the applicant, acknowledging that any revision to the approved SWM site plan must be approved by Newtown Township, and that a revised erosion and sediment control plan must be submitted to the Delaware County Conservation District for a determination of adequacy.
(23) 
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 Newtown Township Stormwater Management Chapter." [Note: license stamp should be included here]
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.
(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.
(f) 
An operations and maintenance plan in accordance with this chapter.
(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 Township stormwater system or facility 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) 
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.
(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 Township shall require receipt of a complete SWM site 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, if applicable:
(1) 
NPDES permit for stormwater discharges from construction activities.
(2) 
DEP permits as needed:
(a) 
DEP 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 Township subdivision and land development review process. The process implementing the provisions in this chapter is illustrated in Appendices D-1 and D-2.[1]
[1]
Editor's Note: Said appendix is included as an attachment to this chapter.
C. 
For projects that require subdivision or land development, 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 subdivision or land development approval, see § 143-31, 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 Newtown Township accompanied by the requisite Township review fee, as specified in this chapter.
(2) 
Two copies to the Delaware County Conservation District.
(3) 
One copy to the Township 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 Township for review by the Township Engineer for consistency with this chapter, other applicable laws and regulations, 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 Township Engineer will review the SWM site plan for any subdivision or land development against the Township subdivision and land development provisions[1] not otherwise superseded by this chapter.
[1]
Editor's Note: See Ch. 148, Subdivision and Land Development.
B. 
The applicant shall respond to the Delaware County Conservation District comments on the SWM site plan prior to being considered for final approval by Newtown Township.
C. 
For activities regulated by this chapter, the Township Engineer will notify the applicant and the Township in writing, with a copy to the Building Code Official, within 30 calendar days, whether the SWM site plan is consistent with the stormwater management plan.
(1) 
If the Township Engineer determines that the SWM site plan is consistent with this chapter, the Township Engineer will forward a letter of consistency to Newtown Township, and to the landowner and other applicant.
(2) 
If the Township Engineer determines that the SWM site plan is inconsistent or noncompliant with the stormwater management chapter, the Township Engineer will forward a letter to Newtown Township, with a copy to the landowner and other applicant citing the reason(s) and specific chapter 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 and resubmitted when consistent with this chapter.
D. 
For regulated activities under this chapter that require an NPDES permit application, the applicant shall forward a copy of the Township Engineer's letter stating that the SWM site plan is consistent with the stormwater management chapter to the Delaware County Conservation District. DEP and the Delaware County Conservation District may consider the Township Engineer's review comments in determining whether to issue a permit.
E. 
Newtown Township will not grant preliminary or final approval to any subdivision or land development for regulated activities specified in this chapter if the SWM site plan has been found by the Township Engineer to be inconsistent with the stormwater management chapter. All required permits from DEP must be obtained prior to approval of any subdivision or land development.
F. 
No building permits for any regulated activity specified in this chapter will be approved by the Township if the SWM site plan has been found to be inconsistent with this chapter, as determined by the Township Engineer and Delaware County Conservation District, or without considering the comments of the Township Engineer and Delaware County Conservation District. All required permits from DEP 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 Township Engineer for final approval. In no case will Newtown Township approve the record drawings until Newtown Township 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.
H. 
Newtown Township's approval of a SWM site plan shall be valid for a period not to exceed five years commencing on the date that Newtown Township 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 Newtown Township 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 Newtown Township shall be resubmitted in accordance with this chapter.
A. 
A revision to a submitted SWM site plan under review by the Newtown Township for a development site that involves the following shall require a resubmission to the Newtown Township of a revised SWM site plan consistent with this chapter and be subject to review as specified by this chapter:
(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 Township Engineer.
B. 
A revision to an already approved or inconsistent or noncompliant SWM site plan shall be submitted to the Newtown Township, accompanied by the applicable Township review and inspection fee. A revision to a SWM site 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 SWM site plan may be resubmitted with the revisions addressing the Township Engineer's concerns documented in writing. It must be addressed to Newtown Township, distributed accordingly, and be subject to review as specified by this chapter. The applicable Township review and inspection fee must accompany a resubmission of an inconsistent or noncompliant SWM site plan.