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HomeMy Public PortalAboutStormwater Management Bylaw--DraftDRAFT Proposed Stormwater Management Bylaw 1 November 18, 2015 DRAFT Proposed Stormwater Management Bylaw for the 1 Town of Brewster, Massachusetts 2 Last revised November 18, 2015 3 4 5 Chapter 272, STORMWATER MANAGEMENT BYLAW 6 § 272-1. Purpose 7 The purpose of this Bylaw is to establish minimum stormwater management requirements and 8 procedures in order to minimize damage to public and private property and infrastructure; 9 safeguard the public health, safety, environment and general welfare; protect aquatic resources 10 and wildlife habitat; and conserve groundwater supplies. This Bylaw seeks to meet that purpose 11 through the following objectives: 12 A. Establish decision-making processes surrounding land development and 13 redevelopment that protect watershed integrity and preserve and/or restore the health 14 of local water resources, such as Pleasant Bay, tributaries from Namskaket Marsh to 15 Quivett Creek Cape Cod Bay, freshwater ponds, streams, and groundwater that is 16 Brewster’s sole source drinking water supply. 17 B. Ensure that new development and other land alterations maintain pre-development 18 runoff characteristics in order to maintain aquatic habitats and prevent flooding, 19 channel erosion, sedimentation, water quality degradation, a decrease in stormwater 20 recharge, and property damage. 21 C. Improve stormwater management from redevelopment and road repaving in areas of 22 existing development. 23 D. Promote the use of Low Impact Development (LID) approaches, such as reducing 24 impervious cover, maintaining natural hydrology, preserving open space, and 25 rainwater reuse. 26 E. Establish minimum construction and post-construction stormwater management 27 standards and design criteria to control stormwater runoff quantity and quality. 28 F. Ensure that during construction soil erosion and sediment control measures are 29 incorporated into the site design process and are implemented and maintained through 30 the establishment of permanent erosion control measures. 31 G. Ensure the long-term function and safety of post-construction stormwater practices. 32 H. Establish administrative procedures for: the submission, review, and approval or 33 disapproval of stormwater management plans; the inspection of approved active 34 projects; and post construction follow up. 35 I. Ensure compliance with requirements of the National Pollutant Discharge 36 Elimination System (NPDES) General Permit for Stormwater Discharges from Small 37 Municipal Separate Storm Sewer Systems (MS4) and other applicable State and 38 Federal mandates. 39 40 41 DRAFT Proposed Stormwater Management Bylaw 2 November 18, 2015 1 § 272-2. Authority 2 This Bylaw is adopted under authority granted by the Home Rule Amendment of the 3 Massachusetts Constitution, the Home Rule statutes, pursuant to the Regulations of the federal 4 Clean Water Act found at 40 CFR 122.34, and as authorized by the residents of the Town of 5 Brewster at the 2016 Annual Town Meeting and as amended. 6 7 § 272-3. Definitions 8 The following terms are defined for the purposes of this Bylaw: 9 ACRONYMS: 10 LID – Low Impact Development 11 MS4 – Municipal Separate Storm Sewer System 12 MSWMS – Massachusetts Stormwater Management Standards 13 NPDES -- National Pollutant Discharge Elimination System 14 SMP – Stormwater Management Permit 15 16 DISCONNECTION: The redirecting of stormwater runoff away from a drainage system into a 17 pervious area of stormwater management. An example would be putting downspouts into dry 18 wells, or having downspouts drain to a rain garden. 19 20 DIRECT DISCHARGE: Any pipe, open channel, or concentrated flow path where stormwater 21 runoff is conveyed directly to a waterbody without prior stormwater treatment or volume 22 reduction. 23 DISTURBANCE: Any activity that causes a temporary or permanent change in the position or 24 location of soil, vegetation, impervious cover, or other land surface that exposes soils to potential 25 erosion, changes the ability of a ground surface area to absorb water, increases polluted runoff, 26 and/or changes the existing surface drainage patterns. 27 IMPERVIOUS COVER: Any material or structure on or above the ground that prevents water 28 from infiltrating through the underlying soil. Impervious cover includes, without limitation, 29 paved parking lots, roads, sidewalks, driveways, patios, roof tops, and swimming pools. Gravel 30 and dirt surfaced roads and parking areas that have become compacted by vehicles and heavy 31 equipment are considered impervious. Permeable pavers and porous pavements designed to 32 prevent compaction are not considered impervious. The term “impervious cover” shall include 33 “impervious area” and “impervious surface.” 34 INFILTRATION: The act of conveying precipitation or runoff into the ground to permit 35 groundwater recharge and the reduction of surface runoff from a project site. 36 LOW IMPACT DEVELOPMENT (LID): An approach to land development design and 37 stormwater management that attempts to mimic the natural hydrology of the site by avoiding, 38 reducing and mitigating impacts with natural, non-structural and structural measures. 39 DRAFT Proposed Stormwater Management Bylaw 3 November 18, 2015 MASSACHUSETTS STORMWATER MANAGEMENT STANDARDS (MSWMS): The latest 1 version as may be amended of the Stormwater Management Standards and accompanying 2 Stormwater Handbook issued by the Massachusetts Department of Environmental Protection 3 pursuant to authority under the Wetlands Protection Act, M.G.L. c.131, §40, and the 4 Massachusetts Clean Waters Act, M.G.L. c.21, §§26-53. The Stormwater Management 5 Standards are incorporated in the Wetlands Protection Act Regulations, 310 CMR 10.05(6)(k) 6 and the Water Quality Certification Regulations, 314 CMR 9.06(6)(a). 7 MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4) or MUNICIPAL STORM 8 DRAIN SYSTEM: The system of conveyances designed or used for collecting or conveying 9 stormwater, including, without limitation, any road with a drainage system, street, gutter, curb, 10 inlet, piped storm drain, pumping facility, retention or detention basin, natural or man-made or 11 altered drainage channel, and other drainage structure that together comprise the storm drainage 12 system owned or operated by the Town of Brewster. 13 NEW DEVELOPMENT: Any construction or land disturbance on a lot, or portion of a lot, or 14 linear right-of-way or easement that is currently in a vegetated state. 15 PRE-DEVELOPMENT: The conditions that exist prior to the proposed development. Where 16 phased development or plan approval occurs (e.g., preliminary grading, roads, and utilities, etc.), 17 the existing conditions at the time prior to the first plan submission shall establish pre-18 development conditions. 19 POST-CONSTRUCTION or POST-DEVELOPMENT: The conditions expected to exist after 20 completion of the proposed development activity in accordance with approved plans on a 21 specific site or tract of land, and does not refer to or include the construction phase of a project. 22 PROJECT AREA: The portion of a parcel of land being developed or redeveloped. 23 RECHARGE: The replenishment of groundwater reserves. 24 REDEVELOPMENT: Any construction, alteration, improvement, repaving, or resurfacing on a 25 site that contains impervious cover, provided the activity does not increase net impervious cover. 26 Portions of a project that increase impervious cover will be treated as new development. 27 REVIEW/REVIEWING BOARD: The Planning Board and/or the Conservation Commission of 28 the Town of Brewster. 29 ROAD IMPROVEMENTS: For the purposes of this bylaw, work on existing roads that trigger 30 stormwater management compliance include resurfacing projects when the sub-base is 31 intersected, the road is being widened, or when the project includes direct drainage to a beach, 32 pond, tributary or wetland. Re-grading of unpaved roads does not trigger compliance with 33 stormwater standards unless the road is being widened, or if it includes a direct discharge to a 34 beach, pond, tributary or wetland. 35 SITE: The entire parcel of land being developed or redeveloped. 36 DRAFT Proposed Stormwater Management Bylaw 4 November 18, 2015 STORMWATER MANAGEMENT: Using engineered structures and non-structural (e.g., site 1 design, vegetation) measures to reduce runoff volume and rates, remove pollutants, promote 2 infiltration, or minimize sources of pollution. 3 STORMWATER MANAGEMENT PERMIT (SMP): A permit issued by the Reviewing Board 4 after review of an application, plans, calculations, and other supporting documents. 5 STORMWATER RUNOFF: Rainfall or snowmelt water flowing over the ground surface or 6 other surface (e.g., rooftop). 7 Terms not defined shall be construed according to their customary and usual meaning, unless the 8 context indicates a special or technical meaning. Words used in the present tense include the 9 future; words in the singular number include the plural and words in the plural number include 10 the singular; and the word "shall" is mandatory and not a suggestion . Additional definitions may 11 be adopted by separate regulation. 12 13 § 272-4. Administration 14 A. For residential projects not requiring an SMP, but subject to the requirements of this 15 bylaw, Stormwater measures shall be evaluated as part of the Building Permit 16 process. 17 B. The Planning Board and Conservation Commission (Review Board) shall be the 18 permit granting authorities for this Bylaw. Any powers granted to, or duties imposed 19 upon, the Review Board may be delegated in writing by the Review Board to any 20 Town employee, board, commission, committee or agent, hereby known as the 21 “Reviewing Agent.” 22 C. The Review Board or its Reviewing Agent shall take any of the following actions as a 23 result of an application for a Stormwater Management Permit (SMP) as specifically 24 defined within the Stormwater Management Regulations promulgated as a result of 25 this Bylaw: Approval, Approval with Conditions, or Disapproval. 26 D. A decision of the Review Board or its Reviewing Agent shall be final. Further relief 27 of a decision by the Review Board or its Reviewing Agent made under this Bylaw 28 shall be appealed to the Superior Court, in accordance with M.G.L. Ch 249 §4. 29 § 272-5. Regulations 30 A. The Planning Board may adopt, and periodically amend, Regulations relating to the 31 terms, conditions, definitions, enforcement, fees (including application, inspection, 32 and/or consultant fees), procedures and administration of this Stormwater 33 Management Bylaw by majority vote of the Planning Board, after conducting a 34 minimum of two (2) advertised public hearings to receive comments on any proposed 35 revisions. Should the Planning Board fail to create and disseminate such Regulations 36 or a court of competent jurisdiction invalidates the Regulations by legal declaration, 37 this Bylaw shall not be suspended or invalidated. 38 B. The Planning Board will utilize, at a minimum, the policy, criteria, and standards of 39 the most recent version of DEP’s Massachusetts Stormwater Management Standards 40 DRAFT Proposed Stormwater Management Bylaw 5 November 18, 2015 (MSWMS) and the Town’s approved MS4 Permit through EPA Region 1 for 1 execution of the provisions of this Bylaw, except where the Town of Brewster 2 specifies more stringent standards. 3 4 § 272-6. Applicability 5 A. A SMP shall be obtained for all activities, new development, and redevelopment 6 projects disturbing 2,500 square feet or more of land that has the potential to alter the 7 quantity or quality of stormwater runoff, except for single and two-family residential 8 projects or exempt activities pursuant to § 272-6.D of this Bylaw. 9 B. The following road improvement projects disturbing 2,500 square feet or more of 10 land are required to comply with stormwater regulations: 11 (a) Projects where the sub-base is intersected during resurfacing of paved roads; 12 (b) When paved or unpaved roads are being widened; or 13 (c) When the project includes a direct discharge to a beach, pond, tributary or 14 wetland. 15 C. A Building Permit or approval from the Building Inspector documenting stormwater 16 control measures shall be obtained for construction, renovation, or modification of a 17 single or two-family dwelling and associated accessory structures disturbing 2,500 18 square feet or more of land. 19 D. Exemptions 20 1. Normal maintenance and improvement of land in agricultural use as defined by 21 the Wetlands Protection Act regulation 310 CMR 10.04 and MGL Chapter 40A 22 Section 3 Zoning Act. 23 2. Emergency repairs to existing utilities. 24 3. Emergency repairs to existing roads or their drainage systems, or to any 25 stormwater management facility that poses a threat to public health or safety or as 26 deemed necessary by the Planning Board, Board of Health, Conservation 27 Commission, or Department of Public Works. 28 4. Any projects subject to review by the Planning Board and/or the Conservation 29 Commission for which all necessary approvals and permits have been issued 30 before the effective date of this Bylaw and/or applications have been filed with 31 the respective entities within ninety (90) days of the effective date of this Bylaw. 32 33 § 272-7. Procedures 34 Permit Procedures and Requirements shall be defined and included as part of any Regulations 35 promulgated under § 272-5 of this Bylaw. 36 § 272-8. Performance Standards 37 A. The Stormwater Management Standards shall be defined and included as part of any 38 Regulations promulgated under § 272-5 of this Bylaw. 39 DRAFT Proposed Stormwater Management Bylaw 6 November 18, 2015 B. Applicable single or two-family residential activities are not required to obtain a 1 SMP, but will be required to provide erosion and sediment control during 2 construction and to minimize off-site stormwater runoff through disconnection, dry 3 wells, rain gardens, cisterns, or other residential on-site stormwater measures as part 4 of the process of obtaining a building permit. 5 6 § 272-9. Waivers 7 A. The Review Board may in its discretion, and after due consideration, decide to waive 8 and exempt strict compliance with any requirement of this Bylaw or the Regulations 9 promulgated hereunder, where it makes a written finding that such action is: 10 1. Allowed by federal, state and local statutes and/or regulations; 11 2. In the public interest; and 12 3. Consistent with the purpose and intent of this Bylaw under § 272-5. 13 B. Criteria for granting a waiver shall be defined and included as part of the Regulations 14 promulgated under § 272-5 of this Bylaw. 15 16 § 272-10. Stormwater Management 17 Under certain circumstances where on-site options for stormwater management are limited, or 18 where off-site options provide better protection, the Review Board may allow the applicant to 19 implement off-site stormwater management. This may be allowed only where a net public 20 benefit is clearly demonstrated and documented by meeting or exceeding the purpose and intent 21 of this Bylaw. 22 23 § 272-11. Enforcement 24 Where the Planning Board is the permit issuing authority, the Building Commissioner shall 25 enforce this Bylaw, Regulations, orders, violation notices, and enforcement orders, and may 26 pursue all civil and criminal remedies for such violations. The Conservation Commission shall 27 enforce permits issued under their authority. Enforcement shall be further defined and included 28 as part of any Regulations promulgated under § 272-5 of this Bylaw. 29 30 § 272-12. Severability 31 A. The invalidity, unconstitutionality or illegality of any provision of this Bylaw shall 32 have not any effect upon the validity, constitutionality or legality of any other 33 provision. 34 B. This Bylaw shall not interfere with or annul any other bylaw, rule, regulation or 35 permit when the aforementioned specifically states that it is controlling. However, 36 when any other bylaw, rule, regulation or permit does not specifically state that it is 37 controlling, the Stormwater Management Bylaw, if more stringent, shall govern. 38