Control of stormwater runoff shall meet the requirements of the Town of Medfield's Subdivision of Land Stormwater Management Regulations, §
310-5.2C, and performance standards for both flood control and nonpoint source pollution reduction as defined in the Massachusetts Stormwater Management Policy and Handbook, current edition, as amended. All assumptions, methodologies and procedures used to design stormwater treatment practices and stormwater management practices shall accompany the design. All activities, project design, stormwater treatment practices and stormwater management practices should aim to minimize stormwater runoff, maximize infiltration and recharge, where appropriate, and minimize pollutants in stormwater runoff.
An operation and maintenance plan (O&M Plan) is required
at the time of application for all projects. The maintenance plan
shall be designed to ensure compliance with the permit in all seasons
and throughout the life of the system. The Director shall make the
final decision of what maintenance option is appropriate in a given
situation. The Director will consider natural features, proximity
of site to water bodies and wetlands, extent of impervious surfaces,
size of the site, the types of stormwater management structures, and
potential need for ongoing maintenance activities when making this
decision. The O&M Plan shall identify and include all required
documents, including, but not limited to, maintenance agreements and
stormwater management easements. All documents shall be submitted
to Town Counsel for review and must be in a form satisfactory to Town
Counsel. The operation and maintenance plan shall remain on file with
the Department of Public Works and shall be an ongoing requirement.
The O&M Plan shall include:
A. The name(s) of the owner(s) for all components of the system.
B. Maintenance agreement(s). The maintenance agreement shall include:
(1) The names, addresses, and phone numbers of the person(s) responsible
for operation and maintenance.
(2) The person(s) responsible for financing maintenance and emergency
repairs.
(3) A maintenance schedule for all drainage structures, including swales
and ponds, and the estimated life span of the system.
(4) A list of easements with the purpose and location of each.
(5) The signature(s) of the owner(s).
(6) A provision requiring a documentation submittal to Department of
Public Works confirming when maintenance has been satisfactory completed.
C. Stormwater management easement(s).
(1) Stormwater management easements shall be provided by the property
owner(s) as necessary for:
(a)
Access for facility inspections and maintenance.
(b)
Preservation of stormwater runoff conveyance, infiltration,
and detention areas and facilities, including flood routes for the
one-hundred-year storm event.
(c)
Direct maintenance access by heavy equipment to structures requiring
regular cleanout.
(2) Stormwater management easements are required for all areas used for
off-site stormwater control, unless the Director grants a waiver.
(3) Easements shall be recorded with the County Registry of Deeds or
Land Court prior to issuance of a certificate of completion by the
Director.
D. Changes to operation and maintenance plans.
(1) The owner(s) of the stormwater management system must notify the
Director of changes in ownership or assignment of financial responsibility.
(2) The maintenance schedule in the maintenance agreement may be amended
to achieve the purposes of this Bylaw by mutual agreement of the Director
and the responsible parties. Amendments must be in writing and signed
by all responsible parties. Responsible parties shall include owner(s),
persons with financial responsibility, and persons with operational
responsibility.