[HISTORY: Adopted by the Town Meeting of the Town of Wenham 4-5-2025 ATM by Art. 22. Amendments noted where applicable.]
A. 
Increased volumes of stormwater, contaminated stormwater runoff from impervious surfaces, and soil erosion and sedimentation are major causes of:
(1) 
Impairment of water quality;
(2) 
Decreased flow in lakes, ponds, streams, rivers, wetlands, and groundwater;
(3) 
Contamination of drinking water supplies;
(4) 
Erosion of stream channels;
(5) 
Alteration or destruction of aquatic and wildlife habitat;
(6) 
Flooding;
(7) 
Overloading or clogging of municipal catch basins and storm drainage systems; and
(8) 
Flooding and erosion on abutting properties.
B. 
The United States Environmental Protection Agency (EPA) has identified sedimentation from land disturbance activities and polluted stormwater runoff from land development and redevelopment as major sources of water pollution, impacting drinking water supplies, natural habitats, and recreational resources. Regulation of activities that result in the disturbance of land and the creation of stormwater runoff is necessary for the protection of the Town of Wenham's water bodies and groundwater resources, to safeguard the health, safety, and welfare of the general public and protect the natural resources of the Town.
C. 
This bylaw establishes stormwater management standards for the final conditions that result from development and redevelopment projects to minimize adverse impacts off-site and downstream which would be borne by abutters, townspeople, and the general public.
D. 
The objectives of this bylaw are to:
(1) 
Protect water resources;
(2) 
Require practices that eliminate soil erosion and sedimentation;
(3) 
Control the volume and rate of stormwater runoff resulting from land disturbance activities in order to minimize potential impacts of flooding;
(4) 
Require practices to manage and treat stormwater runoff generated from new development and redevelopment;
(5) 
Protect groundwater and surface water from degradation or depletion;
(6) 
Promote infiltration and the recharge of groundwater;
(7) 
Prevent pollutants from entering the municipal storm drain system;
(8) 
Prevent flooding and erosion to abutting properties;
(9) 
Ensure that soil erosion and sedimentation control measures and stormwater runoff management practices are incorporated into the site planning and design process and are implemented and maintained;
(10) 
Ensure adequate long-term operation and maintenance of stormwater best management practices so that they work as designed;
(11) 
Require practices to control waste such as discarded building materials, concrete truck washout, chemicals, litter, and sanitary waste at construction sites that may cause adverse impacts to water quality;
(12) 
Comply with state and federal statutes and regulations relating to stormwater discharges; and
(13) 
Establish the Town of Wenham's legal authority to ensure compliance with the provisions of this bylaw through inspection, monitoring and enforcement.
A. 
This bylaw shall apply to all land disturbing activities that are part of new development or redevelopment that result in disturbance of an acre of land or more. Any activity that will alter the drainage characteristics of a parcel of land, unless exempt pursuant to § 211-2B of this bylaw will be subject to this bylaw. A permit from the Authorized Enforcement Agency shall be required for any land disturbing, new development, or redevelopment activity that results in a land disturbance that will disturb equal to or greater than one acre; or will disturb less than one acre, but which is part of a larger common plan of development or sale which will ultimately disturb one acre or greater.
B. 
Construction activities that are exempt are:
(1) 
Normal maintenance and improvement of land in agricultural use as defined by the Wetlands Protection Act regulations 310 CMR 10.04 and MGL c. 40A, § 3;
(2) 
Ground disturbances in the course of customary cemetery use and regular maintenance.
(3) 
Maintenance of existing landscaping, gardens, or lawn areas associated with a single family dwelling provided such maintenance does not include the addition of more than 100 cubic yards of soil or other material, or alteration of drainage patterns;
(4) 
The construction of fencing that will not alter existing terrain or drainage patterns;
(5) 
Normal maintenance of Town-owned land, ways, and appurtenances;
(6) 
Repair or maintenance of an individual subsurface septic disposal system, and related elements such as pipes, etc., provided that the post-repair drainage is equal to the pre-repair drainage.
(7) 
Any work or projects for which all necessary approvals and permits have been issued before the effective date of this bylaw.
(8) 
Activities undertaken in connection with any existing, permitted sand and gravel operation or similar enterprise where such activity is allowed by zoning, but shall not include expanded operations;
(9) 
Maintenance, reconstruction or resurfacing of any public way; and the installation of drainage structures or utilities within or associated with public ways that have been approved by the appropriate authorities provided that written notice be filed with the Authorized Enforcement Agency 14 days prior to commencement of activity, and provided that the reconstruction does not include the addition of impervious coverage greater than a single land width; and
(10) 
Activities undertaken in connection with the refurbishing of an existing athletic field.
C. 
All activities are subject to all existing provisions of the Town of Wenham and must comply with the specifications of each regulation or bylaw. The requirements of this bylaw should be considered minimum requirements, and where any provision of this bylaw imposes restrictions different from those imposed by any other bylaw, rule, regulation, or other provision of law, whichever provision is more restrictive or imposes higher protective standards for human health or the environment shall be considered to take precedence.
D. 
No activities which require a stormwater management permit may commence until a stormwater management permit is issued, regardless of whether other local permits have been received.
A. 
This bylaw is adopted under the authority granted by the Home Rule Amendment of the Massachusetts Constitution and the Home Rule Procedures Act, M.G.L. c. 43B, and pursuant to the regulations of the Clean Water Act found at 40 CFR 122.34.
B. 
Nothing in this bylaw is intended to replace the requirements of any other bylaw that has been made or may be adopted by the Town of Wenham. All activities are subject to all existing provisions of the Town of Wenham and must comply with the specifications of each regulation or bylaw.
The following definitions shall apply to this article:
ABUTTER
The owner(s) of land sharing a border with the lot on which the activity is proposed to take place.
AGRICULTURE
The normal maintenance or improvement of land in agricultural or aquacultural use, as defined by the Massachusetts Wetlands Protection Act, MGL c. 131, § 40, and its implementing regulations.
APPLICANT
Any person, individual, partnership, association, firm, company, corporation, trust, authority, agency, department, or political subdivision, of the Commonwealth or the Federal government to the extent permitted by law requesting a stormwater management permit for proposed land disturbance activity.
AUTHORIZED ENFORCEMENT AGENCY
The Wenham Planning Board and/or its employees or agents designated to enforce this bylaw.
BEST MANAGEMENT PRACTICE (BMP)
An activity, procedure, restraint, or structural improvement that helps to reduce the quantity or improve the quality of stormwater runoff as described in the Massachusetts Stormwater Handbook and any other applicable local regulations.
CLEAN WATER ACT
The Federal Water Pollution Control Act (33 U.S.C. § 1251 et seq.) as hereafter amended.
CONSTRUCTION ACTIVITY
Any activity that causes a change in the position or location of soil, sand, rock, gravel or similar earth material.
CONSTRUCTION SITE
The plot of land located within the Town on which the construction activity will occur.
DEVELOPMENT
The modification of land to accommodate a new use or expansion of use, usually involving construction.
DISTURBANCE OF LAND
Any action that causes a change in the position, location, or arrangement of soil, sand, rock, gravel, ledge or similar earth material, and includes earth fill, earth moving, and earth removal.
EARTH FILL
The addition of earth materials to a lot or parcel, including but not limited to, sand, gravel, stone, soil, loam, sod, clay and mineral products.
EARTH MOVING
The addition, removal or relocation of earth materials within the boundaries of a lot or parcel, including but not limited to sand, gravel, ledge, stone, soil, loam, sod, clay and mineral products and includes the processes of grading and grubbing.
EARTH REMOVAL
The removal of earth materials from a lot or parcel, including but not limited to sand, gravel, ledge, stone, soil, loam, sold, clay and mineral products.
EROSION
The wearing away of the land surface by natural or artificial forces such as wind, water, ice, gravity, or vehicle traffic and the subsequent detachment and transportation of soil particles.
EROSION AND SEDIMENTATION CONTROL PLAN
A document containing narrative, drawings and details developed by a qualified professional engineer (PE), which includes best management practices, or equivalent measures designed to control surface runoff, erosion and sedimentation during pre-construction and construction related activities.
GROUNDWATER
Water beneath the surface of the ground.
GRUBBING
The act of clearing land surface by digging up roots and stumps.
IMPERVIOUS SURFACE
Any material or structure on or above the ground that prevents water infiltrating the underlying soil. Impervious surface includes without limitation roads, paved parking lots, sidewalks, and roof tops.
LAND-DISTURBING ACTIVITY
Any activity that causes a change in the position or location of soil, sand, rock, gravel, or similar earth material, including without limitation: earth fill, earth moving, earth removal, clearing, grubbing, or grading.
LOT
A single parcel of land held in identical ownership throughout and defined by metes, bounds, or boundary lines in a recorded deed or on a recorded plan.
MASSACHUSETTS STORMWATER HANDBOOK
The Handbook issued by the Massachusetts Department of Environmental Protection, as amended from time to time, that coordinates the requirements prescribed by state regulations promulgated under the authority of the Massachusetts Wetlands Protection Act, MGL c. 131, § 40 and Massachusetts Clean Waters Act, MGL c. 21, §§ 23 through 56. The Handbook includes the Massachusetts Stormwater Management Standards, which implement performance criteria to reduce or prevent pollutants from reaching water bodies and control the quantity and quality of runoff from a site.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4) OR MUNICIPAL STORM DRAIN SYSTEM
The system of conveyances designed or used for collecting or conveying stormwater, including any road with a drainage system, street, gutter, curb, inlet, piped storm drain, pumping facility, retention or detention basin, natural or man-made or altered drainage channel, reservoir, and other drainage structure that together comprise the storm drainage system owned or operated by the Town of Wenham.
NEW DEVELOPMENT
Any construction activities or land alteration resulting in total earth disturbances greater than one acre (or activities that are part of a larger common plan of development disturbing greater than one acre) on an area that has not previously been developed to include impervious cover.
OPERATION AND MAINTENANCE PLAN
A plan setting up the functional, financial and organizational mechanisms for the ongoing operation and maintenance of a stormwater management system to insure that it continues to function as designed.
OUTFALL
The location where a sewer, drain, stream or other point source discharges into receiving waters.
OWNER
A person with a legal or equitable interest in property.
PERSON
An individual, partnership, association, firm, company, trust, corporation, agency, authority, department or political subdivision of the Commonwealth or the federal government, to the extent permitted by law, and any officer, employee, or agent of such person.
POINT SOURCE
Any discernible, confined, and discrete conveyance, including but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, ground boring that produces the discharge of water, or container from which stormwater and/or pollutants are or may be discharged.
POLLUTANT
Any element or property of sewage, agricultural, industrial or commercial waste, runoff, leachate, heated effluent, or other matter whether originating at a point or nonpoint source, that is or may be introduced into any sewage treatment works or waters of the Commonwealth of Massachusetts. Pollutants shall include without limitation:
A. 
Paints, varnishes, and solvents;
B. 
Oil and other automotive fluids;
C. 
Non-hazardous liquid and solid wastes and yard wastes;
D. 
Refuse, rubbish, garbage, litter, or other discarded or abandoned objects, ordinances, accumulations and floatables;
E. 
Pesticides, herbicides, and fertilizers;
F. 
Hazardous materials and wastes; sewage, fecal coliform and pathogens;
G. 
Dissolved and particulate metals;
H. 
Animal wastes;
I. 
Rock, sand, salt, soils unless applied for the purpose of public safety during winter conditions;
J. 
Construction wastes and residues; and
K. 
Noxious or offensive matter of any kind.
PRE-CONSTRUCTION
All activity in preparation for construction.
RECHARGE
The process by which groundwater is replenished by precipitation through the percolation of runoff and surface water through the soil.
REDEVELOPMENT
Development, rehabilitation, expansion, demolition or phased projects that disturb the ground surface or increase the impervious area on previously developed sites.
RUNOFF
Rainfall, snowmelt, or irrigation water flowing over the ground surface.
SEDIMENT
Mineral or organic soil material that is transported by wind or water, from its origin to another location; the product of erosion processes.
SEDIMENTATION
The process or act of deposition of sediment.
SITE
Any lot or parcel of land or area of property where land-disturbing activities are, were, or will be performed.
SOIL
Any earth, sand, rock, gravel, or similar material.
STORMWATER
Rainfall runoff, snow melt runoff, and surface water runoff and drainage.
STORMWATER DISCHARGES
Stormwater that runs off from the construction site into the MS4 or otherwise into waters of the U.S.
STORMWATER MANAGEMENT MEASURES
Infrastructure improvements that are constructed or installed during construction activity to prevent pollutants from entering stormwater discharges or to reduce the quantity of stormwater discharges that will occur after construction activity has been completed. Examples include but are not limited to: on-site filtration, flow attenuation by vegetation or natural depressions, outfall velocity dissipation devices, retention structures and artificial wetlands, and water quality detention structures.
STORMWATER PERMIT
The permit issued by the Authorized Enforcement Agency to the applicant after review of an application, plans, calculations, and other supporting documents, which allows construction activity to occur.
WETLANDS
Tidal and non-tidal areas characterized by saturated or nearly saturated soils most of the year that are located between terrestrial (land-based) and aquatic (water-based) environments, including freshwater marshes around ponds and channels (rivers and streams), brackish and salt marshes; common names include marshes, swamps and bogs.
A. 
The Authorized Enforcement Agency shall be the permit granting authority for the issuance of stormwater management permits and shall administer, implement, and enforce this bylaw. Any powers granted to or duties imposed upon the Authorized Enforcement Agency may be delegated in writing to its employees or agents.
B. 
The Authorized Enforcement Agency may employ outside consultants, at the applicant of the stormwater management permit's expense, to assist in its permit decision, including but not limited to plan review, drainage, and stormwater analysis; to determine conformance with this bylaw and other requirements; and for construction inspection.
C. 
Stormwater rules and regulations. The Authorized Enforcement Agency may adopt, and may periodically amend, rules and regulations relating to the procedures and administration of this bylaw. The Regulations shall be adopted by majority vote after conducting a public hearing. Failure of the Authorized Enforcement Agency to adopt such Regulations or a legal declaration of their invalidity by a court shall not act to suspend or invalidate the effect of this bylaw.
Stormwater management permit procedures and submission requirements shall be defined and included as part of the Stormwater Rules and Regulations. Such regulations shall include, but shall not be limited to:
(1) 
A requirement that stormwater management permits be issued within 60 days of the date of filing a complete application, unless a time extension has been granted.
(2) 
A procedure for distribution to and review of permit applications.
(3) 
A requirement for applicants to submit an Operation and Maintenance Plan for the stormwater management system.
(4) 
Performance standards which require that projects must meet the stormwater management standards of the Massachusetts Stormwater Handbook. The Authorized Enforcement Agency will utilize the policy, criteria, and information, including specifications and standards, of the latest edition of the Massachusetts Stormwater Handbook to execute the provisions of this bylaw. The Handbook includes a list of acceptable stormwater treatment practices, including the specific design criteria for each. Unless specifically altered in the Stormwater Rules and Regulations, stormwater management practices that are designed, constructed, and maintained in accordance with these design and sizing criteria will be presumed to be protective of Massachusetts water quality standards.
D. 
Waivers. The Authorized Enforcement Agency may in its discretion and after due consideration decide to waive and exempt strict compliance with any requirement of the Town of Wenham Construction and Post Construction Stormwater Management Bylaw or the Rules and Regulations promulgated hereunder, where it makes a written finding that such action is: 1. allowed by federal, state, or local statutes and/or regulations; 2. in the public interest; and 3. consistent with the purpose and intent of the Town of Wenham Construction and Post Construction Stormwater Management Bylaw and its Rules and Regulations.
E. 
Actions by the Authorized Enforcement Agency. The Authorized Enforcement Agency may take any of the following actions on an application for a stormwater management permit: approval, approval with conditions, or disapproval. A permit may be disapproved if the Authorized Enforcement Agency determines that the requirements of this bylaw or the Stormwater Rules and Regulations are not met.
A. 
The Authorized Enforcement Agency shall enforce this bylaw and related regulations, as well as the terms and conditions of all permits, notices, and orders, and may pursue all civil and criminal remedies for such violations.
B. 
Orders.
(1) 
The Authorized Enforcement Agency may issue a written order to enforce the provisions of this bylaw or the regulations thereunder, which may include requirements to:
(a) 
Cease and desist from the land-disturbing activity until there is compliance with the bylaw and provisions of the stormwater management permit.
(b) 
Repair, maintain, or install additional erosion and sediment control measures.
(c) 
Repair, maintain, or replace the stormwater management system or portions thereof in accordance with the operation and maintenance plan.
(d) 
Monitor, analyze, and report.
(e) 
Remediate erosion and sedimentation resulting directly or indirectly from the activity.
(2) 
If the Authorized Enforcement Agency determines that abatement or remediation of erosion, sedimentation, and/or adverse impacts is required, the order shall set forth a deadline by which such abatement or remediation must be completed. Said order shall further advise that should the violator or property owner fail to abate or perform remediation within the specified deadline, the Town of Wenham may, at its option, undertake such work, and the property owner shall reimburse the Town's expenses.
(3) 
Within 30 days after completing all measures necessary to abate the violation or to perform remediation, the violator and the property owner shall be notified of the costs incurred by the Town of Wenham, including administrative costs. The violator or property owner may file a written protest objecting to the amount or basis of costs with the Authorized Enforcement Agency within 30 days of receipt of the notification of the costs incurred. If the amount due is not received by the expiration of the time in which to file a protest or within 30 days following a decision of the Authorized Enforcement Agency affirming or reducing the costs, or from a final decision of a court of competent jurisdiction, the costs shall become a special assessment against the property owner and shall constitute a lien on the owner's property for the amount of said costs. Interest shall begin to accrue on any unpaid costs at a statutory rate, as provided in MGL c. 59, § 57, after the 31st day following the day on which the costs were due.
C. 
Non-criminal disposition. As an alternative to criminal prosecution or civil action, the Town of Wenham may elect to utilize the non-criminal disposition procedure set forth in MGL c. 40, § 21D. The penalty for the first violation shall be $50. The penalty for the second violation shall be $100. The penalty for the third and subsequent violations shall be $300. Each day or part thereof that such violation occurs or continues shall constitute a separate offense.
D. 
Appeals. The decisions or orders of the Authorized Enforcement Agency shall be final. Further relief shall be to a court of competent jurisdiction.
E. 
Remedies not exclusive. The remedies listed in this bylaw are not exclusive of any other remedies available under any applicable federal, state or local law.
A. 
The Authorized Enforcement Agency will issue a letter certifying completion upon receipt and approval of the final reports and/or upon otherwise determining that work of the permit has been satisfactorily completed in conformance with this bylaw and the accompanying rules and regulations.
A. 
To the extent permitted by state law, or if authorized by the owner or other party in control of the property, the Authorized Enforcement Agency and its agents, officers, and employees may enter upon privately owned property for the purpose of performing their duties under this bylaw and may make or cause to be made such examinations, surveys, or sampling as the Authorized Enforcement Agency deems reasonably necessary to determine compliance with the permit.
A. 
The Authorized Enforcement Agency may require the permittee to post a surety bond, irrevocable letter of credit, cash, or other acceptable security before the start of land disturbance or construction activity. The form of the bond shall be approved by Town Counsel and be in an amount deemed sufficient by the Authorized Enforcement Agency to ensure that the work will be completed in accordance with the permit. If the project is phased, the Authorized Enforcement Agency may release part of the bond as each phase is completed in compliance with the permit, but the bond may not be fully released until the Authorized Enforcement Agency has received the final report outlined in the Stormwater Rules and Regulations and issue a certificate of completion. If the permittee defaults on any obligations imposed by the stormwater management permit, the Authorized Enforcement Agency may, after notification of the permittee, inform the holder of the security of the default, in which event the Town shall be entitled to the security funds.
A. 
If any provision, paragraph, sentence, or clause of this bylaw shall be held invalid for any reason, all other provisions shall continue in full force and effect.