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Home My WebLink About95-36 - Amending Sections 15.50.070 and 15.50.220 (C) of Chapter 15.50 of the Newport Beach Municipal Code Relating to Establishment of Areas of Special Flood Hazard, and Standards of ConstructionORDINANCE NO. 95 -36 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF NEWPORT BEACH, CALIFORNIA, AMENDING SECTIONS 15.50.070 AND 15.50.220 (C) OF CHAPTER 15.50 OF THE NEWPORT BEACH MUNICIPAL . CODE RELATING TO ESTABLISHMENT OF AREAS OF SPECIAL FLOOD HAZARD, AND STANDARDS OF CONSTRUCTION. SECTION 1: The City Council of the City of Newport Beach does hereby ordain that Section 15.50.070 of Chapter 15.50 the Newport Beach Municipal Code is amended to read as follows: 15.050.070 Basis for Establishing the Areas of Special Flood Hazard. The areas of special flood hazard identified by the Federal Insurance Administration of the Federal Emergency Management Agency in the "Flood Insurance Study Orange County and Incorporated Areas," dated February 1992, with an accompanying Flood Insurance Rate Map and flood boundary and floodway maps dated February 1992, and all subsequent revisions, are hereby adopted by reference and declared to be a part of this Chapter. This Flood Insurance Study is on file at 3300 Newport Boulevard, Newport Beach, California (92659- 1768) . This Flood Insurance Study is the minimum area of applicability of this Chapter and may be supplemented by studies for other areas which allow implementation of this Chapter and which are recommended to the City Council by the Floodplain Administrator. Notwithstanding the building pad elevations established by the Flood Insurance Rate Maps, the minimum required first floor elevations for the interior living areas of all new structures shall be at least 6.27 Mean Sea Level consistent with the Public Works Department standard for bulkhead ..dw� elevation. ,"NOW SECTION 2: The City Council of the City of Newport Beach does hereby ordain that Chapter 15.050.220 of the Newport Beach Municipal Code is amended to read as follows: 15.50.220 Standards of Construction: In all areas of special flood hazards the following standards are required: 1 A. Anchoring. 1. All new construction and substantial improvement shall be adequately anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. • B. Construction materials and methods. All new construction and substantial improvements shall be constructed 1. with materials and utility equipment resistant to flood damage; 2. using methods and practices that minimize flood damage; 3. with electrical, heating, ventilation, plumbing and air conditioning equipment and other service facilities that are designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding; and if 4. with Zones AH or AO, so that there are adequate drainage paths around structures on slopes to guide flood waters around and • away from proposed structures. C. Elevation and floodproofing. (See Section 15.50.050 for definitions of "new construction," "substantial damage" and "substantial improvement. ") 1. Residential construction: Residential construction, new or substantial improvement, shall have the lowest floor, including basement, a. in an AO zone, elevated above the highest adjacent grade to a height equal to or exceeding the depth number specified in feet on the FIRM, or elevated at least two feet above the highest grade if no depth number is specified. b. in an AO zone, elevated to or above the base flood elevation, as determined by the City of Newport Beach. C. in all other zones, elevated to or above the base flood elevation. [6.27' MSL (min) 15.50.0701 All new construction and substantial improvements with fully enclosed areas below the lowest floor (excluding basements) that are usable solely for parking of vehicles, building access or 2 storage, and which are subject to flooding, shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwater. Designs for meeting this requirement must exceed the following minimum criteria: • a. be certified by a registered professional engineer or architect to comply with a local f loodproof ing standard approved by the Federal Insurance Administration, Federal Emergency management Agency, or b. have a minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding. The bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with screens, louvers, valves or other coverings or devices provided that they permit the automatic entry and exit of floodwater. Upon completion of the structure, the elevation of the lowest floor including basement shall be certified by a registered • professional engineer or surveyor, and verified by the community building inspector to be properly elevated. Such certification or verification shall be provided to the Floodplain Administrator. 2. Nonresidential construction: Nonresidential construction shall either be elevated to conform with section C.1 or together with attendant utility and sanitary facilities a. be floodproofed below the elevation recommended under Section C.1 so that the structure is watertight with walls substantially impermeable to the passage of water; b. have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy; and C. be certified by a registered professional engineer or architect that the standards of this section are satisfied. Such AMk certification shall be submitted to the Floodplain Administrator. MW 3. Manufactured homes. a. Manufactured homes that are placed or substantially improved, within Zones Al -30, AH, an AE on the community's Flood Insurance Rate Map, on sites located CP (i) outside of a manufactured home park or subdivision (ii) in a new manufactured home park or subdivision, (iii) in an expansion to an existing manufactured home park or subdivision on a site upon which a manufactured home has incurred "substantial damage" as the result of a flood, shall be elevated to or above the base flood elevation and be securely anchored to an adequately anchored foundation system to resist flotation, collapse and lateral movement. b. All manufactured homes that are placed or substantially improved on sites located within Zones VI -30, V, and VE on the community's Flood Insurance Rate map will meet the requirements of paragraph 3a and Section 15.50.250. C. All manufactured homes to be placed or substantially improved on sites in an existing manufactured home park or subdivision within Zones Al -30, AH, AE, VI -30, V, and VE on the community's Flood Insurance Rate Map that are not subject to the provisions of paragraph 3a will be elevated so that either the • (i) lowest floor of the manufactured home is at or above the base flood elevation, or (ii) manufactured home chassis is supported by reinforced piers or other foundation elements of at least equivalent strength that are not less than 36 inches in height above grade and be securely anchored to an adequately anchored foundation to resist flotation, collapse and lateral movement. 4. Recreational Vehicles. a. All recreational vehicles placed on sites within Zones Al -30, AH and AE on the community's Flood Insurance Rate Map will either: (i) be on the site for fewer than 180 consecutive days, (ii) be fully licensed and ready for highway use - a recreational vehicle is ready for highway use if it is on its wheels or jacking system, is attached to the site only by quick disconnect type utilities and security devises, and has no permanently attached additions, or (iii) meet the permit requirements of Section 15.50.130 of 4 this Chapter. b. Recreation vehicles placed on sites within Zones V1 -30, V, and VE on the community's Flood Insurance Rate Map shall meet the requirements of paragraph 4(a) and Section 15.50.250. SECTION 3: That if any section, subsection, sentence, • clause or phrase of this ordinance is for any reason, held to be invalid or unconstitutional, such decision shall not affect the validity or constitutionality of the remaining portions of this ordinance. The City Council hereby declares that it would have passed this ordinance, and each section, subsection, clause or phrase hereof, irrespective of the fact that any one or more sections, subsections, sentences, clauses and phrases be declared unconstitutional. SECTION 4: The Mayor shall sign and the City Clerk shall attest to the passage of this ordinance. The City Clerk shall cause the same to be published once in the official newspaper of the City, and it shall be effective thirty (30) days after its • adoption. SECTION 5: This ordinance was introduced at a regular meeting of the City Council of the City of Newport Beach, held on the 14th day of August , 1995, and adopted on the 28th day of August 1995, by the following vote, to wit: AYES, COUNCILMEMBERS EDWARDS, WATT, DEBAY, HEDGES, COX, GLOVER, O'NEIL NOES, COUNCILMEMBERS NONE ABSENT COUNCILMEMBERS NONE • MAYOR �\ 4� ATTEST: 5