A. 
No regulated earth disturbance activities within the Township shall commence until approval by the Township of a stormwater management operations and maintenance plan that describes how the permanent (e.g., postconstruction) stormwater controls and BMPs will be properly operated and maintained.
B. 
The following items shall be included in the stormwater control and BMP operations and maintenance plan:
(1) 
Map(s) of the project area, in a form that meets the requirements for recording at the offices of the Recorder of Deeds of Chester County, shall be submitted on twenty-four-inch by thirty-six-inch sheets. The contents of the maps(s) shall include, but not be limited to:
(a) 
Clear identification of the location and nature of permanent stormwater controls and BMPs;
(b) 
The location of the project site relative to highways, municipal boundaries, adjacent properties, and/or other identifiable landmarks;
(c) 
Existing and final contours at intervals of two feet, or others as appropriate;
(d) 
Existing streams, lakes, ponds, or other bodies of water within the project site area;
(e) 
Other physical features including flood hazard boundaries, sinkholes, streams, existing drainagecourses, and areas of natural vegetation and natural features to be preserved;
(f) 
The locations of all existing and proposed utilities, sanitary sewers, storm sewers, water and gas lines within 300 feet of property lines of the project site;
(g) 
Proposed final changes to the land surface and vegetative cover, including the type and amount of impervious area that would be added;
(h) 
Proposed final structures, utilities, roads, sidewalks, paved areas, and buildings; and
(i) 
A twenty-foot-wide access easement around all stormwater controls and BMPs that would provide ingress to and egress from a public right-of-way;
(2) 
A description of how each permanent stormwater control and BMP will be operated and maintained, and the identity and contact information associated with the person(s) responsible for operations and maintenance. At a minimum, the stormwater management operation and maintenance plan shall include the following items:
(a) 
Who is responsible for the long-term operation and maintenance (owner, as well as any affiliated management firm responsible for conducting the inspections and maintenance activities). Contact information, including telephone number, cell phone, email addresses, addresses, names and title, as well as emergency contacts should be included in the O&M plan;
(b) 
What are the permanent stormwater facilities and controls that will be operated and maintained per the approved plan, including but not limited to items such as inlets, pipes, outfalls, headwalls, endwalls, basins, underground seepage and detention beds, swales, etc. Specific elements of the stormwater management plan should be identified for the inspection;
(c) 
When: A timeframe for routine and emergency inspections and maintenance of all permanent stormwater management facilities shall be provided on the plan. At a minimum all facilities will be inspected at least once per quarter of each year and after all rainstorms exceeding two inches per twenty-four-hour period;
(d) 
How: A description of how inspections will be conducted, as well as reports kept on file with the property owner, shall be included in the plan. At a minimum, inspection reports shall be signed by the owner and owner's engineer and submitted to the Township on a yearly basis to ensure that all permanent stormwater management facilities are operating according to the approved stormwater management plan. In addition, all maintenance activities shall be documented and provided with the yearly report;
(e) 
Where: The owner shall submit yearly reports to the Township Engineer setting forth the location of all stormwater facilities to be inspected and maintained;
(3) 
The name of the project site, the name and address of the owner of the property, and the name of the individual or firm preparing the plan; and
(4) 
A statement, signed by the landowner, acknowledging that the stormwater controls and BMPs are fixtures that cannot be altered or removed without first obtaining approval from the Township Engineer.
C. 
The stormwater control and BMP operations and maintenance plan for the project site shall establish responsibilities for the continuing operation and maintenance of all permanent stormwater controls and BMPs, as follows:
(1) 
If a plan includes structures or lots which are to be separately owned and in which streets, sewers, and other public improvements are to be dedicated to the Township, stormwater controls and BMPs may also be dedicated to and maintained by the Township;
(2) 
If a plan includes operations and maintenance by a single ownership or if sewers and other public improvements are to be privately owned and maintained, then the operation and maintenance of stormwater controls and BMPs shall be the responsibility of the owner or private management entity.
D. 
The Township shall make the final determination on the continuing operations and maintenance responsibilities. The Township reserves the right to accept or reject the operations and maintenance responsibility for any or all of the stormwater controls and BMPs.
A. 
The Township Engineer or designee shall review the stormwater management operations and maintenance plan for consistency with the purposes and requirements of this chapter and any permits issued by DEP.
B. 
The Township Engineer or designee shall notify the applicant in writing whether or not the stormwater management operations and maintenance plan is approved.
C. 
The stormwater drainage plan and stormwater management operations and maintenance plan shall be recorded at the office of the Recorder of Deeds of Chester County, and proof of the recording submitted to the Township Engineer.
It shall be a violation of this chapter for any person or entity to alter or remove any permanent stormwater control and BMP required by an approved stormwater management operations and maintenance plan or to allow the property to remain in a condition which does not conform to an approved stormwater management operations and maintenance plan.
A. 
Prior to final approval of the site's drainage plan, the applicant shall sign and record the operation and maintenance agreement covering all stormwater facilities that are to be privately owned and operated. The maintenance agreement shall be transferred with transfer of ownership.
B. 
Other items may be included in the agreement where determined necessary to guarantee the satisfactory operation and maintenance of all permanent stormwater controls and BMPs. The agreement shall be subject to the review and approval of the Township Engineer.
A. 
Stormwater management easements are required for all areas used for off-site stormwater control, unless a waiver is granted by the Township Engineer.
B. 
Stormwater management easements shall be provided by the applicant or property owner if necessary for access for inspections and maintenance or the preservation of stormwater runoff conveyance, infiltration, and detention areas and other stormwater controls and BMPs by persons other than the property owner. The purpose of the easement shall be specified in any agreement under § 174-31.
C. 
At the discretion of the Township Engineer, applicants may be required to obtain off-site stormwater easements with adjacent downstream property owners in cases where flows are not controlled on site and not conveyed to defined drainage channels, streams, etc.
A. 
The owner of any land upon which permanent stormwater controls and BMPs will be placed, constructed, or implemented, as described in the stormwater management operations and maintenance plan, shall record the following documents in the office of the Recorder of Deeds for Chester County within 15 days of approval of the stormwater management operations and maintenance plan by the Township:
(1) 
The Stormwater management plan and details approved by Tredyffrin Township;
(2) 
The operations and maintenance plan approved by Tredyffrin Township and signed by the property owner and design engineer, or a summary thereof;
(3) 
Operations and maintenance agreement(s) under § 174-31; and
(4) 
Easements under § 174-32.
B. 
The Township may suspend or revoke any approvals granted for the project site upon discovery of failure on the part of the owner to comply with this section.