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HomeMy WebLinkAbout1259� a r ORDINANCE NO. 1259 (1994 Series) AN ORDINANCE OF THE CITY OF SAN LUIS OBISPO AMENDING SECTIONS 17.84.030, 17.84.110, 17.84.130 AND 17.84.160 OF THE MUNICIPAL CODE REGARDING FLOOD DAMAGE PREVENTION REGULATIONS BE IT ORDAINED by the Council of the City of San Luis Obispo as follows: SECTION 1. Section 17.84.030, paragraghs (I), (J) and (CC) of the Municipal Code of the City of San Luis Obispo are hereby amended to read: I. "Flood Insurance Rate Map (FIRM)" means the official map, dated July 7, 1981, on which the Flood Insurance Administration has delineated both the areas of special flood hazards and the risk premium zones applicable to the community. J. "Flood Insurance Study" means the official report, dated October 1978, revised July 7, 1981, provided in which the Flood Insurance Administration has provided flood profiles, as well as the Flood Hazard Boundary- F1oodway Map and the water surface elevations of the base flood. CC. "Substantial improvement" means any repair, reconstruction or improvement of a structure, the cost (cumulatively, within any five -year period) of which equals or -exceeds fifty percent of the market value of the structure either before the improvement or repair is begun, or, if the structure has been damaged and is being restored, before the damage occurred. For the purposes of this definition, substantial improvement is considered to occur when the first alteration of any wall, ceiling, floor or other structural part of the building commences, 0 -1259 Ordinance No. 1259 (1994 Series) Page Two whether or not that alteration affects the external dimensions of the structure. The term shall not, however, include either: 1. Any project for improvement of a structure to comply with existing state or local health, sanitary or safety code specifications which are solely necessary to assure safe living conditions; or, 2. Any alteration of a structure listed on the National Register of Historic Places, listed on the State Inventory of Historic places or listed on the City's Historical and Architectural Element of the General Plan. SECTION 2. Section 17.84.110 is hereby amended to add paragraph G. to read: G. Subdividers and /or Developers shall apply for and obtain Letters of Map Revisions from the Federal Emergency Management Agency when physical changes constructed with developments affect flooding conditions which would change special flood hazard zones. SECTION 3. Section 17.84.130, paragraph C.2., is hereby amended to read: C.2. Obtain and record the actual elevation (in relation to mean sea level, 1929 NGVD) of the lowest floor (including basement) of all new or substantially improved structures; SECTION 4. Section 17.84.160 is hereby amended to read: A. New construction and substantial improvement of any structure shall have the lowest floor, including basement, elevated Ordinance No. 1259 (1994 Series) Page Three to at least one foot above the level of the base flood elevation, or, at least one foot greater than the depth number above the highest adjacent grade in AO Zones. B. EXCEPTION: The City Engineer may allow commercial, industrial or other non - residential structures to be "floodproofed" in developed areas, when elevating the lowest floor above the base flood elevation is not feasible and /or the surrounding developments are not built above the base flood elevation, together with the attendant utility and sanitary facilities, and shall meet the following conditions: 1. Be floodproofed to one foot above the base flood level, or at least one foot greater than the depth number above the highest adjacent grade in AO Zones, so that the structure, including utilities and plumbing facilities, is watertight with walls substantially impermeable to the pressure of water. 2. Have structural components capable of resisting hydrostatic and hydrodynamic loads and buoyancy; and 3. Require for all new construction and substantial improve- ments, that fully enclosed areas below the lowest floor that are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this require- ment must either be certified by a registered professional engineer or architect, or meet or exceed the following minimum criteria: Ordinance No. 1259 (1994 Series) Page Four a. Either 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 shall be provided, the bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with screens, louvers, valves or other devises provided that they permit the automatic entry and exit of floodwaters; or b. Be certified to comply with a local floodproofing standard approved by the Federal Insurance Administration. 4. Be certified by a registered professional engineer or architect that the standards of this subsection are satisfied. Such certification shall be provided to the City Engineer. C. Manufactured Homes. 1. All new and replacement manufactured homes and additions to manufactures homes shall: A. Be elevated so that the lowest floor is at least one foot above the based flood elevation; and B. Be securely anchored to a permanent foundation system to resist flotation, collapse or lateral movement. SECTION 5. A summary of this ordinance, approved by the City Attorney, together with the ayes and noes, shall be published at least five (5) days prior to its final passage in the Telegram - Tribune, a newspaper published and circulated in said City, and the same shall go into effect at the expiration of thirty (30) days Ordinance No.1259 (1994 Series) Page Five after its said final passage. A copy of the full text of this ordinance shall be on file in the office of the City Clerk on and after the date following introduction and passage to print and shall be available to any interested member of the public. INTRODUCED AND PASSED TO PRINT by the Council of the City of San Luis Obispo at a meeting held on the 15th day of March , 1994. On motion of Roalman , seconded by Romero , and on the following roll call vote: AYES: Council Members Roalman, Romero, Rappa, and.--Settle NOES: Mayor Pinard ABSENT: None MAYOR Peg(,Pinard ATTEST: APPROVED AS TO FORM: 4WL�_�� i A or ey G: \.. \FEMA \F1oodReg.0rd l01a �4a" Ordinance No. 1259 (1994 Series) FINALLY PASSED this 5th day of April , 1994, on motion of Council Member Settle , seconded by Council Member Romero , and on the following roll call vote: AYES: Council Members Settle, Romero, Rappa, Roalman, and Mayor Pinard NOES: None ABSENT: None Mayor Peg Oinard ATTEST: i90NL. Wd-