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NFIP Overlay Zone Text.pdfCity of Northampton MASSACHUSETTS In City Council, May 18, 2023 Upon the recommendation of Mayor Gina-Louise Sciarra and the Office of Planning & Sustainability An Ordinance of the City of Northampton, Massachusetts, providing that the Code of Ordinances, City of Northampton, Massachusetts, be amended to create a National Flood Insurance Program (NFIP) Overlay district, to ensure the City of Northampton meets or exceeds minimum requirements of the NFIP. Be it ordained by the City Council of the City of Northampton, in City Council assembled, as follows: Amend § 350-3.1 Division into districts, by adding text shown The City of Northampton, Massachusetts, is hereby divided into zoning districts to be designated as follows: Full Name Short Name Class National Flood Insurance Program NFIP Overlay “O” District Amend § 350-3.6 by adding text shown The Floodplain, NFIP Residential Incentive Development, and Water Supply Protection Districts are superimposed over any other districts established by this chapter. The rules for these superimposed (overlay) districts shall be in addition to, rather than in place of, the rules for such underlying other districts. The boundaries of these districts are shown on the Zoning Map and, for the Floodplain District, shall be interpreted as lying 100 feet horizontally from the normal high-water line of a stream, river or pond unless another dimension is otherwise apparent. Amend § 350-13.1 by adding text shown The purposes of the Special Conservancy District are: A. To protect the public health and safety, persons and property against the hazards of seasonal and periodic flooding. See also § 350-16; Amend § 350-14.1 by adding text shown The purpose of the Floodplain District is: B. To protect the health and safety of persons and property against the hazards of flooding and contamination, as specified in § 350-13.1 and § 350-16;; Add the following as § 350-16 § 350-16.1 Purpose The purpose of the Floodplain Overlay District is to: A) Ensure public safety through reducing the threats to life and personal injury B) Eliminate new hazards to emergency response officials C) Prevent the occurrence of public emergencies resulting from water quality, contamination, and pollution due to flooding D) Avoid the loss of utility services which if damaged by flooding would disrupt or shut down the utility network and impact regions of the community beyond the site of flooding D) Eliminate costs associated with the response and cleanup of flooding conditions F) Reduce damage to public and private property resulting from flooding waters The District includes all special flood hazard areas within the City of Northampton designated as Zone A, AE, AH, AO, A99, V, or VE on the Hampshire County Flood Insurance Rate Map (FIRM) dated April 3 1978 issued by the Federal Emergency Management Agency (FEMA) for the administration of the National Flood Insurance Program. These are defined by the 1%-chance base flood elevations shown on the FIRM and further defined by the Hampshire County Flood Insurance Study (FIS) report dated November 1976. The FIRM and FIS report are incorporated herein by reference and are on file with the City Clerk, Office of Planning and Sustainability, and Building Department. § 350-16.2 Definitions For the purposes of this section, the following terms shall have the following definitions: DEVELOPMENT means any man-made change to improved or unimproved real estate, including but not limited to building or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials. [US Code of Federal Regulations, Title 44, Part 59] FLOOD BOUNDARY AND FLOODWAY MAP means an official map of a community issued by FEMA that depicts, based on detailed analyses, the boundaries of the 100-year and 500-year floods and the 100-year floodway. (For maps done in 1987 and later, the floodway designation is included on the FIRM.) FLOOD HAZARD BOUNDARY MAP (FHBM.) An official map of a community issued by the Federal Insurance Administrator, where the boundaries of the flood and related erosion areas having special hazards have been designated as Zone A or E. [US Code of Federal Regulations, Title 44, Part 59] FLOODWAY. The channel of the river, creek or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height. [Base Code, Chapter 2, Section 202] FUNCTIONALLY DEPENDENT USE means a use which cannot perform its intended purpose unless it is located or carried out in close proximity to water. The term includes only docking facilities, port facilities that are necessary for the loading and unloading of cargo or passengers, and ship building and ship repair facilities, but does not include long-term storage or related manufacturing facilities. [US Code of Federal Regulations, Title 44, Part 59] Also [Referenced Standard ASCE 24-14] HIGHEST ADJACENT GRADE means the highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure. [US Code of Federal Regulations, Title 44, Part 59] HISTORIC STRUCTURE means any structure that is: (a) Listed individually in the National Register of Historic Places (a listing maintained by the Department of Interior) or preliminarily determined by the Secretary of the Interior as meeting the requirements for individual listing on the National Register; (b) Certified or preliminarily determined by the Secretary of the Interior as contributing to the historical significance of a registered historic district or a district preliminarily determined by the Secretary to qualify as a registered historic district; (c) Individually listed on a state inventory of historic places in states with historic preservation programs which have been approved by the Secretary of the Interior; or (d) Individually listed on a local inventory of historic places in communities with historic preservation programs that have been certified either: (1) By an approved state program as determined by the Secretary of the Interior or (2) Directly by the Secretary of the Interior in states without approved programs. [US Code of Federal Regulations, Title 44, Part 59] NEW CONSTRUCTION. Structures for which the start of construction commenced on or after the effective date of the first floodplain management code, regulation, ordinance, or standard adopted by the authority having jurisdiction, including any subsequent improvements to such structures. New construction includes work determined to be substantial improvement. [Referenced Standard ASCE 24-14] RECREATIONAL VEHICLE means a vehicle which is: (a) Built on a single chassis; (b) 400 square feet or less when measured at the largest horizontal projection; (c) Designed to be self-propelled or permanently towable by a light duty truck; and (d) Designed primarily not for use as a permanent dwelling but as temporary living quarters for recreational, camping, travel, or seasonal use. [US Code of Federal Regulations, Title 44, Part 59] REGULATORY FLOODWAY - see FLOODWAY. SPECIAL FLOOD HAZARD AREA. The land area subject to flood hazards and shown on a Flood Insurance Rate Map or other flood hazard map as Zone A, AE, A1-30, A99, AR, AO, AH, V, VO, VE or V1-30. [Base Code, Chapter 2, Section 202] START OF CONSTRUCTION. The date of issuance for new construction and substantial improvements to existing structures, provided the actual start of construction, repair, reconstruction, rehabilitation, addition, placement or other improvement is within 180 days after the date of issuance. The actual start of construction means the first placement of permanent construction of a building (including a manufactured home) on a site, such as the pouring of a slab or footings, installation of pilings or construction of columns. Permanent construction does not include land preparation (such as clearing, excavation, grading or filling), the installation of streets or walkways, excavation for a basement, footings, piers or foundations, the erection of temporary forms or the installation of accessory buildings such as garages or sheds not occupied as dwelling units or not part of the main building. For a substantial improvement, the actual “start of construction” means the first alteration of any wall, ceiling, floor or other structural part of a building, whether or not that alteration affects the external dimensions of the building. [Base Code, Chapter 2, Section 202] STRUCTURE means, for floodplain management purposes, a walled and roofed building, including a gas or liquid storage tank, that is principally above ground, as well as a manufactured home. [US Code of Federal Regulations, Title 44, Part 59] SUBSTANTIAL REPAIR OF A FOUNDATION. When work to repair or replace a foundation results in the repair or replacement of a portion of the foundation with a perimeter along the base of the foundation that equals or exceeds 50% of the perimeter of the base of the foundation measured in linear feet, or repair or replacement of 50% of the piles, columns or piers of a pile, column or pier supported foundation, the building official shall determine it to be substantial repair of a foundation. Applications determined by the building official to constitute substantial repair of a foundation shall require all existing portions of the entire building or structure to meet the requirements of 780 CMR. [As amended by MA in 9th Edition BC] VARIANCE means a grant of relief by a community from the terms of a flood plain management regulation. [US Code of Federal Regulations, Title 44, Part 59] VIOLATION means the failure of a structure or other development to be fully compliant with the community's flood plain management regulations. A structure or other development without the elevation certificate, other certifications, or other evidence of compliance required in §60.3(b)(5), (c)(4), (c)(10), (d)(3), (e)(2), (e)(4), or (e)(5) is presumed to be in violation until such time as that documentation is provided. [US Code of Federal Regulations, Title 44, Part 59] § 350-16.3 Abrogation and greater restriction The floodplain management regulations found in this Floodplain Overlay District section shall take precedence over any less restrictive conflicting local laws, ordinances or codes. § 350-16.4 . Disclaimer of liability The degree of flood protection required by this bylaw ordinance is considered reasonable but does not imply total flood protection. § 350-16.5. Severability If any section, provision or portion of this ordinance is deemed to be unconstitutional or invalid by a court, the remainder of the ordinance shall be effective. § 350-16.6. Requirement to submit new technical data If the Town/City acquires data that changes the base flood elevation in the FEMA mapped Special Flood Hazard Areas, the Town/City will, within 6 months, notify FEMA of these changes by submitting the technical or scientific data that supports the change(s.) Notification shall be submitted to: FEMA Region I Risk Analysis Branch Chief 99 High St., 6th floor, Boston, MA 02110 And copy of notification to: Massachusetts NFIP State Coordinator MA Dept. of Conservation & Recreation, 251 Causeway Street, Boston, MA 02114 § 350-16.7. Variances to building code floodplain standards The City will request from the State Building Code Appeals Board a written and/or audible copy of the portion of the hearing related to the variance, and will maintain this record in the community’s files. The Town/City shall also issue a letter to the property owner regarding potential impacts to the annual premiums for the flood insurance policy covering that property, in writing over the signature of a community official that (i) the issuance of a variance to construct a structure below the base flood level will result in increased premium rates for flood insurance up to amounts as high as $25 for $100 of insurance coverage and (ii) such construction below the base flood level increases risks to life and property. Such notification shall be maintained with the record of all variance actions for the referenced development in the floodplain overlay district. § 350-16.8. Variances to local Zoning Bylaws related to community compliance with the National Flood Insurance Program (NFIP) A variance from these floodplain bylaws must meet the requirements set out by State law, and may only be granted if: 1) Good and sufficient cause and exceptional non-financial hardship exist; 2) the variance will not result in additional threats to public safety, extraordinary public expense, or fraud or victimization of the public; and 3) the variance is the minimum action necessary to afford relief. § 350-16.9. Permits are required for all proposed development in the Floodplain Overlay District The City of Northampton requires a permit for all proposed construction or other development in the NFIP overlay district, including new construction or changes to existing buildings, placement of manufactured homes, placement of agricultural facilities, fences, sheds, storage facilities or drilling, mining, paving and any other development that might increase flooding or adversely impact flood risks to other properties. Proponents must acquire all necessary permits, and must demonstrate that all necessary permits have been acquired. § 350-16.10. Subdivision proposals All subdivision proposals and development proposals in the floodplain overlay district shall be reviewed to assure that: (a) Such proposals minimize flood damage. (b) Public utilities and facilities are located & constructed so as to minimize flood damage. (c) Adequate drainage is provided. § 350-16.11. Base flood elevation data for subdivision proposals When proposing subdivisions or other developments greater than 50 lots or 5 acres (whichever is less), the proponent must provide technical data to determine base flood elevations for each developable parcel shown on the design plans. § 350-16.12. Unnumbered A Zones In A Zones, in the absence of FEMA BFE data and floodway data, the building department will obtain, review and reasonably utilize base flood elevation and floodway data available from a Federal, State, or other source as criteria for requiring new construction, substantial improvements, or other development in Zone A as the basis for elevating residential structures to or above base flood level, for floodproofing or elevating nonresidential structures to or above base flood level, and for prohibiting encroachments in floodways. § 350-16.13 Floodway encroachment In Zones A, A1-30, and AE, along watercourses that have not had a regulatory floodway designated, the best available Federal, State, local, or other floodway data shall be used to prohibit encroachments in floodways which would result in any increase in flood levels within the community during the occurrence of the base flood discharge. In Zones A1-30 and AE, along watercourses that have a regulatory floodway designated on the Town’s/City’s FIRM or Flood Boundary & Floodway Map (choose map which delineates floodways for your community) encroachments are prohibited in the regulatory floodway which would result in any increase in flood levels within the community during the occurrence of the base flood discharge. § 350-16.14 Watercourse alterations or relocations in riverine areas In a riverine situation, the Building Commissioner shall notify the following of any alteration or relocation of a watercourse: • Adjacent Communities, especially upstream and downstream • Bordering States, if affected • NFIP State Coordinator Massachusetts Department of Conservation and Recreation 251 Causeway Street, 8th floor Boston, MA 02114 • NFIP Program Specialist Federal Emergency Management Agency, Region I 99 High Street, 6th Floor Boston, MA 02110 § 350-16.15. Recreational vehicles In A1-30, AH, AE Zones, V1-30, VE, and V Zones, all recreational vehicles to be placed on a site must be elevated and anchored in accordance with the zone’s regulations for foundation and elevation requirements or be on the site for less than 180 consecutive days or be fully licensed and highway ready.