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HomeMy WebLinkAboutAgenda Report - June 22, 1988CITY COUIXIL MEETI14G JUNE 22, 1988 FLOOD DAMAGE PREVENTION ORD FIANCE INTRODUCED ORD. NO. 1426 This agenda item was introduced by City Manager Peterson. Community Cevelopment Director Schroeder gave the staff CC -24(b) report indicating that, in June 1987, the City Council CC -53(a) adopted the Flood Damage Prevention Ordinance which is CC -149 required if our citizens are to be eligible for Flood Hazard Insurance. Upon review by both the state and federal agencies a number of minor revision were requested. These changes were oversights by the Community Development staff at the time the Ordinance was prepared. NIr Schroeder presented a draft ordinance for Council review advising that it had been approved by the State Department of Water Resources and the City Attorney. The Federal Emergency Management Administration will accept the Ordinance based on the Water Resources approval. There were no persons in the audience wishing to speak on this matter. Following discussion, Mayor Pro Tempore Snider introduced Ordinance No. 1426 entitled, "Flood Damage Prevention". The motion was seconded by Council Member Olson and carried by unanimous vote. MEMORANDUM To: Dave Morimoto, Associate Planner From: Bob McNatt, City Attorney Date: June 10, 1988 Re: Flood Manage Prevention Ordinance I have reviewed the proposed changes to the Flood Damage Prevention Ordinance and see no problems as drafted. The format is good, and I concur in the idea that the individual terms under "definitions" should not be numbered to allow striking of unnecessary definitions in the future and addition of terms as required without renumbering. I believe that the proposed draft can be adopted in its present form. Please let ne know if there are further questions. Bobc att City Attorney BM: vc cc: Alice M. Reimche, City Clerk BMMORIMO.TO/TXTA.OIV +,+.ra..,....+iA� .�6�GcynSMw y,SM1• N+.+lam«.ryt.f-4.YM�rraw�d%T1WY +�Ma2+`«^ �... . ....-.....-,w.a v vr,ru�anYuu•.rr'-.w�+ sMw�T• .v+�w� ^ e....a..n+w'. a .nnve+`�-i,•..,. MEMORANDUM, City of Lodi, Community Development Department TO: ALICE REIMCHE, City Clerk FROM: COMMUNITY DEVELOPMENT DEPARTMENT DATE: MAY 24, 1988 SUBJECT: FLOOD DAMAGE PKEVENTION CRDINANCE The City of Lodi adopted a Flood Manage Prevention Ordinance last year to comply with State and Federal requirements. The State Water Resources Agency has reviewed our ordinance. They have requested that we make several minor changes to make the ordinance more precisely reflect the City's Flood Insurance Maps. The changes have to do with so culled "Shallow Flooding Zones." We have eliminated all references to these zones since "e do not have any shallow zones in the City of Lodi . These changes are on Page 2, "Area of shallow flooding," Page 5,"Special flood hazard area," Page 8, 15.60.130 B.l.d. , and Page 9, 15.60.140 C.2. The other changes were numbering changes which resulted from the elimination of the "Shallow flooding zone" sections and the subsequent need to renumber sections and references. Please review the draft revised ordinance to determine if this can be adopted by the City Council. Once it i s adopted, an approved copy must be sent to the State of California and the Federal Emergency Management Agency. Please call ne if there are any questions regarding this matter. W" ��j -14b DAVID MORIMOTO Associate Planner ORDINANCE NO. 1400 FLOOD DAMAGE PREVENTION ARTICLE I GENERAL PROVISIONS 15.60.010 STATUTORY AUTHORIZATION. The Legislature of the State of California has in Government Code Sections 65302, 65560 and 65800 conferred upon local goverrnnent units authority to adopt regulations designed to promote the public health, safety, and general welfare of its citizenry. Therefore, the City Council of the City of Lodi does ordain as follows: 15.60.020 FINDiNGS OF FACT A. The flood hazard areas of City of Lodi are subject to periodic inundation which results in loss of life and property, health and safety hazards, disruption of commerce m! governmental services, extraordinary public expenditures for flood protection and relief, and impairment of the tax base, all of which adversely affect the public health, safety and general welfare. B. These flood losses are caused by the cumulative effect of oostructions in areas of special flood hazards which increase flood heights and velocities, and when inadequately anchored, damage uses in other areas. Uses that are inadequately floodproofed, elevated or otherwise protected from flood damage also contribute to the flood loss. 15.60.030 STATEMENT OF PURPOSE. It is the purpose of this ordinance to promote the public health, safety, and general welfare, and to minimize public and private losses due to flood conditions in specific areas by provisions designed: A. To protect human life and health; B. To minimize expenditure of public nxr1ey for costly flood control projects. C. To minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public; D. To minimize prolonged business interruptions; E. To minimize damage to public facilities and utilities such as water and gas mains, electric, telephone and sewer lines, streets and bridges located in areas of special flood hazard; F. To help maintain a stable tax base by providing for the second use and development of areas of special flood hazard so as to minimize future flood blight areas; G. To insure that potential buyers are notified that property is in an area of special flood hazard; and H. To insure that those who occupy the areas of special flood hazard assume responsibility for their actions. 15.60.040 METHODS OF REDUCING FLOOD LOSSES. In order to accomplish its purposes, this ordinance includes methods and provisions for: A. Restricting or prohibiting uses which are dangerous to health, safety, and property due to water or erosion hazards, or which result in damaging increases in erosion or flood heights or velocities; B. Requiring that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; C. Controlling the alteration of natural floodplains, stream channels, and natural protective barriers, which help accommodate or channel flood waters; D. Controlling filling, grading, dredging, and other development which may increase flood damage; and, E. Preventing or regulating the construction of flood barriers which will unnaturally divert flood waters or which may increase flood hazards in other areas. 15.60.050' DEFINITIONS. Unless specifically defined below, words or phrases used in this ordinance shall be interpreted so as to give them the meaning they have in oon im usage and to give this ordinance its most reasonable application. "Appeal" means a request for a review of the Floodplain Administrator's interpretation of any provision of this ordinance or a request for a variance. '=Area-ef-shallew-fleed}n "-means -a- des }grated -AB;-en-AH-ZeRe-eR-the -Fleed IRsuranee-Rate-Nap- FIRfb ---The-base-€lead-depths-range-fwem-ane-te-three-feet;-a Eleawly-de€{red-ehannel-dees-net-e�}std-the-path-ef-fleeding-Is-�npned}Etaf�le-and indeterm4nate#-and-yelee}ty-flew-may-fie-ey4dent: "Area of special flood hazard" - See "Special flood hazard area". "Base flood" means the flood having a one percent chance of being equalled or exceeded in any given year (also called the "100 -year flood"). "Basement" means any area of the building having its floor subgrade (below ground level) on all sides. "Breakaway walls" are any type of walls, whether solid or lattice, and whether constructed of concrete, masonry, wood, metal, plastic or any other suitable building material which is not part of the structural support of the building and -2- ORDFLD2/TXTD.OIC which is designed to break away under abnormally high tides or wave action without causing any damage to the structural integrity of the building on which they are used or any buildings to which they might be carried by flood waters. A breakaway wall shall have a safe design loading resistance of not less than ten and no more than twenty pounds per square foot. Use of breakaway walls must be certified by a registered engineer or architect and shall meet the following conditions: 1. Breakaway wall collapse shall result from a water load less than that which would occur during the base flood; and 2. The elevated portion of the building shall not incur any structural damage due to the effects of wind and water loads acting simultaneously in the event of the base flood. "Peyelopment" means any man-made change to improved or unimproved real estate , including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations. "Flood or flooding" means a general and temporary condition of partia? or complete inundation of normally dry land areas from (1) the overflow of flood waters, (2) the unusual and rapid accumulation or runoff of surface water from any source, and/or (3) the collapse or subsidence of land along the shore of a lake or other body of water as a result of erosion or undermining caused by waves or currents of water exceeding anticipated cyclical levels or suddenly caused by an unusually high water level in a natural body of water, accompanied by a severe storm, or by an unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by some similarly unusual and unforeseeable event which results in flooding as defined in this definition. "Flood Boundary and Floodway Map" means the official map on which the Federal Emergency Management Agency or Federal Insurance Administration has delineated both the areas of flood hazard and the floodway. "Flood Insurance Rate Map (FIRM)" means the official map on which the Federal Emergency Management Agency or Federal Insurance Administration has delineated both -the areas of special flood hazards and the risk premium zones applicable to the community. "Flood Insurance Study" means the official report provided by the Federal Insurance Administration that includes flood profiles, the FIRM, the Flood Boundary and Floodway Map, and the water surface elevation of the base flood. "Floodplain or flood -prone area" means any land area susceptib?e to being inundated by water from any source (see definition of "flooding"). "Floodplain management" means the operation of an overall program of corrective and preventive measures for reducing flood damage, including but not limited to emergency preparedness plans, flood control works and fl oodp?ai n management regulations. "Floodplain management regulations" means zoning ordinances , subdivision regulations, building codes, health regulations, special purpose ordinances (such as floodplain ordinance , grading ordinance and erosion control ordinance) and -3- ORDFLD2/TXTD.OIG other applications of police power. The term describes such state or local regulations in any combination thereof, which provide standards for the purpose of flood damage prevention and reduction. "Fl_oodproofing" means any combination of structural and nonstructural additions, changes, or adjustments to structures which reduce or eliminate facilities, structures and their contents. "Floodway" means the channel of a river 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 eievation more than one foot. Also referred to as "Regulatory floodway". "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. "Highest adjacent grade" means the highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure. "Lowest floor" means the lowest floor of the lowest enclosed area (including basement). An unfinished or flood resistant enclosure, usable solely for parking of vehicles , building access or storage in an area other than a basement area i s not considered a building's lowest floor; provided, that such enclosure is not built so as to render the structure in violation of the applicable non -elevation design requirements of this ordinance. "Manufactured home" means a structure, transportable in one or more sections, which is built on a permanent chassis and is designed for use with or without a permanent foundation when connected to the required utilities. For floodplain management purposes the term "manufactured home" also includes park trailers, travel trailers and other similar vehicles placed on a site for greater than 180 consecutive days. "Manufactured home park or subdivision" means a parcel (or contiguous parcels) of landdivided into two or more manufactured home lots for sale or rent. "Mean sea level" means, for purposes of the National Flood Insurance Program, the Nations Geodetic Vertical Datum (NVD) of 1929 or other datum, to which base flood elevations shown on a community's Flood Insurance Rate Map are referenced. "New construction" means, for floodplain management purposes, structures for which the "start of construction" commenced on or after the effective date of a floodplain management regulation adopted by this community. "One hundred year flood" or "100 -year flood" means a flood which has a one percent annual probability of being equalled or exceeded. It i s identical to the "base flood", which will be the term used throughout this ordinance. -4- ORDFLD2/TXTD,OIC ••••..m�am?„4w :w*4+:Vewna 'nrvu.�Yi.p 4ijanft#.i"44K:iti �1,4s.?1AG,.WS�X..»i+nu✓,as.w, ... .. v..w _777 .. "wwm "Person" means an individual or his agent, firm, partnership, association or corporation, or agent of the aforementioned groups, or this state or its agencies or politica! subdivisions. 'Remedy a violation" means to bring the structure or other development into compliance with State or local floodplain management regulations, or, if this is not possible, to reduce the impacts of its noncompliance. Ways that impacts may be reduced include protecting the structure or other affected development from flood damages, implementing the enforcement provisions of the ordinance or otherwise deterring future similar violations, or reducing Federal _financial exposure with regard to the structure or other development. "Riverine" means relating to, formed by, or resembling a river (including tributaries), stream, brook, etc. "Special flood hazard area S(SFHA)" means an area having special flood or flood-relatederosion hazards, and shown on an FHBM or FIRM as Zone A, A8, Al -30, AE, or A99 ex -AH. "Start of Construction" includes substantial improvement, and means the date the building permit was issued, provided the actual start of construction, repair, reconstruction, pi -,cement, or other improvement was within 180 days of the permit date. The actual start means either the first placement of permanent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns, or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers, or foundations or the erection of temporary fornis; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. "Structure" means a walled and roofed building, including a gas or liquid storage tank, that is principally above ground, as well as a manufactured home. "Substantial improvement" means any repair, reconstruction, cr improvement of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure either: (1) before the improvement or repair is started; or (2) if the structure has been damaged, and is being restored, before the damage occurred. For the purposes of this definition "substantia? improvement" is considered to occur when the first alteration of any wall, ceiling, floor, or other structural part of the building commences, whether or not that alteration affects the external dimensions of the structure. The term does 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 -5- ORDFLD2/TXTD.OIC (2) any alteration of a structure listed on the National Register of Historic Places or a State Inventory of Historic Places. "Variance" means a grant of relief from the requirements of this ordinance which permits construction in a manner that would otherwise be prohibited by this Ordinance. "Violation" means the failure of a structure or other development to be fully compliant with the community's floodplain management regulations. A structure or other development without the elevation certificate, other certifications, or other evidence of Compliance required in this ordinance is presumed to be in violation until such time as that documentation is provided. 15.60.060 LANDS TO WHICH THIS CRDK� APPLIES. This ordinance shall apply to all areas of special flood hazards, with the jurisdiction of the City of Lodi. 15.60.070 BASIS FOR ESTABLISHING THE AREAS OF SPECIAL FLOOD HAZARD. The areas of special flood hazard, identified by the Federal Emergency Management Agency or the Federal Insurance Administration in a scientific and engineering report entitled "Flood Insurance Study for City of Lodi dated June 18, 1987, with an accompanying Flood Insurance Rate map is hereby adopted by reference and declared to be a part of this ordinance. This Flood Insurance Study is on file at City Hall, 221 West Pine Street, Lodi, California 95240. This Flood Insurance Study is the minimum area of applicability of this ordinance and may be supplemented by studies for other areas which allow implementation of this ordinance and which are recommended to the City Council by the Floodplain Administrator. 15.60.080 CJON411ANICE No structure or land shall hereafter be constructed, located, extended, converted, or altered without full compliance with the terms of %hisordinance and other applicable regulations. Violations of the provisions of this ordinance by failure to comply with any of its requirements (including violations of conditions and safeguards established in connection with conditions) shall constitute a misdemeanor. Nothing herein shall prevent the City Council from taking such lawful action as is necessary to prevent or remedy any violation. 15.60.090 ABROGATION AND GREATER RESTRICTIONS. This ordinance is not intended to repeal, abrogate, or impair any existing easements, covenants, or deed restrictions. However, where this or ioance and another ordinance, easement, covenant, or deed restriction conflict or overlap, whichever imposes the more stringent restrictions hall prevail. 15.60.100 INTERPRETATION In the interpretation and application of this ordinance, all provisions shall be: A. Considered as minimum requirements; B. Liberally construed in favor of the governing body; and C. Dmned neither to limit nor repeal any other powers granted under state statutes. -6- ORDFLD2/TXTD.OIC .,,......,,,c...„..w.:r... ' ..a,,.,,,.,,. �n: ..e.v:: , wT...w:..�H.�...1 a' �.-.4., .-.,...�... .4:.,..... ,......,...—. .,..........._ _ y r.> >,. s. s...v .., s..:...,. ,...... ....� ., .. ....... .,,.. 15.60.110 WARNING AND DISCLAIMER OF LIABILITY. The degree of flood protection required by this ordinance is considered reasonable for regulatory purposes and is based on scientific and engineering considerations. Larger floods can and will occur on rare occasions. Flood heights may be increased by man-made or natural causes. This ordinance does riot imply that land outside the areas of special flood hazards, or uses permitted within such areas will be free from flooding G flood damages. This ordinance shall not create liability on the part of City of Lodi, any officer or employee thereof, or the Federal Insurance Administration, for any flood damages that result from reliance on this ordinance or any administrative decision lawfully made thereunder. ARTICLE II ADMINISTRATION 15.60.120 ESTABLISHMENT OF DEVELOPMENT PERMIT. A Development Permit shall be obtained before construction or development begins within any area of special flood hazards, established in Section 15.60.070. Application for a Development Permit shall be made on forms furnished by the Floodplain Administrator and may include, but not be limited to: plans in duplicate drawn to scale showing the nature, location, dimensions, and elevation of the area in question; exfting or proposed structures, fill, storage of materials, drainage facilities; and the location of the foregoing. Specifically, the following information i s required: A. Proposed elevation in relation to mean sea level, of the lowest floor (including basement) of all structures; B. Proposed elevation in relation to mean sea level to which any structure' 'ywi 11 be f loodproofed ; C. All appropriate certifications listed in Sect or. 15.60.130B.4 of this ordinance; and D. Description of the extent to which any watercourse will be altered or relocated as a result of proposed development. 15.60.130 THE FLOODPLAIN ADMINISTRATOR - DUTIES AND RESPONSIBILITIES A. The Community Development Director is hereby arrninted to administer and implement this ordinance by granting or denying development permits in accordance with its provisions. B. The duties and responsibilities of the floodplain administrator shall include, but not be limited to: 1. Permit review. a. Review all development permits to determine that the permit requirements of this ordinance have been satisfied; b. All other required state and federal permits have been obtained; d. The proposed development does not adversely affect the carrying capacity of the -f: e6dway AREAS WHERE BASE FLOOD ELEVATIONS HAVE BEEN GETERMINED BUT A FLOODWAY HAS NOT BEEN DESIGNATED. For purposes of this ordinance, "adversely affects" means that the cumulative effect of the proposed development when coirbined with all other existing and anticipated development will not increase the water surface elevation of the base flood more than one foot any point. 2. Use of Other Base Flood Data. When base flood elevation data has not been provided in accordance with Section 15.66.070, the Floodplain Administrator shall obtain., review, and reasonably utilize any base flood elevation and floodway data available ) roi: a Federal, State or other source, in order to administer Section 15.60.140 through 15.60.180. Any such information shall be subrni tted to the City Council for adoption. 3. Whenever a watercourse is to be altered or relocated: a. Notify adjacent communities and the California Department of Water Resources prior to such alteration or relocation of a Watercourse, and submit evidence of such notification to the Federal Insurance Administration; b. Require that the flood carrying capacity of the altered or relocated portion of said watercourse i s maintained., 4. Obtain and maintain for public inspection and make available as needed: a. the certification required in Section 15.60.140(C)(1) (floor elevations) ; b. the certification required in Section 15.60.140(C)(2) (elevation or floodproofing of nonresidential structures) ; c. the certification required in Section 15.60.140(C)(3) (wet f loodproof i ng standard) ; d. the certified elevation required in Section 15.60.160 (subdivision standards) ; e. the certification required in Section 15.60.180 (floodway encroachments). 5. Make interpretations where needed, as to the exact location of the boundaries of the areas of special flood -hazards,(for example, where there appears to be a conflict between a mapped boundary and actual field conditions). The person contesting the location of the boundary shall be given a reasonable opportunity to appeal the interpretation as providers in Section 15.60.190 and 15.60.200. -8- ORDFLD2/TXTD.OIC 6. Take action to remedy violations of this ordinance as sp^cified Section 15.60.080 herein. ARTICLE III PROVISIONS FOR FLOOD HAZARD REDUCTION 15.60.140 STANDARDS OF CONSTRUCTION the following standards are required: A. Anchoring In all areas of special flood hazards 1. A17 new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. 2. Ail manufactured homes shall meet the anchoring standards of Section 15.60.170. B. Construction Materials and Methods. 1. All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage. 2. All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damage. 3. All new construction and substantial improvements shall be constructed 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. C. Elevation and Floodproofing 1. Nov construction and substantial improvement of any structure shall have the lowest floor, including basement, elevated to or above the base flood elevation. Nonresidential structures may meet the standards in Subdivision 2 of this subsection. Upon the completion of the structure the elevation of the lowest floor including basement shall be certified by a registered professional engineer or surveyor, or verified by the community building inspector to be properly elevated. Such certification or verification shall be provided to the Floodplain Administrator. 2:--New-eenstraet*eR-and-substant4al-4mprevement-ef-any struetare-4n'-zone-AH-sr-AB-shall-have-the-4ewest-fleer; 4Re4ad4ng-baseFRent;-elevated-above-the-h4ghest-adiaeeRt-grade at-4east-as-h4gh-as-the-depth-Rem6er-spee4f4ed-4n-feet-eR-the FIRM,-er-at-least-twe-feet-4f-Re-depth-number-4s-speeif4ed: Nenres}dent}at-struetares-tray-meet-the-standards-4R-Seet4en -9- ORDFLD2/TXTD.01C � : l : 6-3--dpee-the-eer�plet;}en-et:-t;he-st�eEtr�xe-the-elevat}aA-et: the-lewest;-€Iee�-ieEled}pg-hasea;ept-shall-be••Fe�z;€=ed-hy-a regist;ered-pre€essiepal-eegieeer-er-serveyerT-er-ver+fied-by trhe-ee��bpity-beildipg-ipspeEt:er-t:e-be-a�epe�ly-ele�a�ed- �eEh-Ee�t;it=ieatiee-e�-vee}t:lEat}ep-shall-be-p�evided-te-the Fleedpla}s-Adan}p}st rater: 2. Nonresidential construction shall either be elevated in conformance with Subdivisions 1 or 2 of this subsection, or together with attendant utility and sanitary facilities: a. be floodproofed so that below the base flood level 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 subsection are satisfied. Such certifications shall be provided to the Floodplain Administrator. 3. Require, for all new construction and substantial improvements, 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 requirement must either be certified by a registered professional engineer or architect or meet or exceed the following minimum criteria: 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 coverings or devices provided that they permit the automatic entry and exit of floodwaters; or b. & certified to comply with a local floodproofing standard approved by the Federal Insurance Administration. 4. Manufactured homes shall also meet the standards in Section 15.60.170. 15.60.150 STANDARDS FOR UTILITIES A. All new and replacement water supply and sanitary sewage systems shall be designed to minimize or eliminate infiltration of -10- ORDFLD2/TXTD.01C flood waters into the systerii and discharge from systems into flood waters. B. On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding. 15.60.150 STANDARDS FOR SUBDIVISIONS. A. All preliminary subdivision proposals shall identify the flood hazard area and the elevation of the base flood. 6. All final subdivision plans will provide the elevation of proposed structure(s) and pads. If the site is filled above the base flood, the final pad elevation shall be certified by a registered professional engineer or surveyor and provided to the Floodplain Administrator. All subdivision proposals shall be consistent with the need to minimize flood damage. D. All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage. E. All subdivisions shall provide adequate drainage to reduce exposure to flood hazards. 15.60.170 STANDARDS FOR MANUFACTURED HOMES. All new and replacement manufactured homes and additions to manufactured homes shall : A. & elevated so that the lowest floor is at or above the base flood elevation; and B. & securely anchored to a permanent foundation system to resist flotation, collapse or lateral movement. 15.60.180 FLOODWAYS. Located within areas of special flood hazard established in Section 15.60.070 are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of flood water which carry debris, potential projectiles, and erosion potential, the following provisions apply: A. Prohibit encroachments, including fill, new construction , substantial improvements, and other development unless certification by a registered professional engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge. €3. If Subsection A of this section is satisfied, all raw construction substantial improvements shall comply with al l other applicable flood hazard reduction provisions of Section 15.60.140 through 15.60.180. -1Z- ORDFLD2/TXTD.01C ----------- ARTICLE IV APPEALS 15.60.190 Appeal board - Factors to consider when granting variances. A. The City Councii of City of Lodi shall hear and decide appeals and requests for variances from the requirements of this ordinance. B. The City Council shall hear and decide appeals when it is alleged there is an error in any requirement, decision, or determination made by the Floodplain Administrator in the enforcement or administration of this ordinance. C. In passing upon such applications, the City Council shall consider all techrical evaluations, all relevant factors, standards specified in other sections of this ordinance, and: 1. the danger that materials may be swept onto other lands to the injury of others; 2. the danger of life and property due to flooding or erosion damage; 3. the susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner; 4. the importance of the services provided by the proposed facility to the community; 5. the necessity to the facility of a waterfront location, where applicable; 6. the availability of alternative locations for the proposed use which are not subject to flooding or erosion damage ; 7. the compatibility of the proposed use with existing and anti ci pated development; 8. the relationship of the proposed use to the comprehensive plan and floodplain management program fore that area; 9. the safety of access to the property in time of flood f o r ordinary and emergency vehicles; 10. the expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters expected at the site; and, 11. the costs of providing governmental services during and after flood conditions, including maintenance and repair of public utilities and facilities such as sewer, gas, electrical, and water system, and streets and bridges. -12- ORDFLD2/TXTD.01C D. Generally, variances may be issued for new construction and substantial improvements to be erected on a lot of one-half acre or less in size contiguous to and surrounded by lots with existing structures constructed below the base flood level, providing the provisions of Subsection C of this section have been fully considered. As the lot size increases beyond one-half acre, the technical justification required for issuing the variance increases. E. Upon consideration of the factors of Subsection C of this section and the purposes of this ordinance, the City Council may attach such conditions to the granting of variances as it deems necessary to further the purposes of this ordinance. F. The Floodplain Administrator shall maintain the records of all appeal actions and report any variances to the Federal Insurance Administration upon request. 15.60.200 CONDITIONS FOR VARIANCES A. Variances may be issued for the reconstruction, rehabilitation or restoration of structures listed in the National Register of Historic Places or the State Inventory of Historic Places, without regard to the procedures set forth in the remainder of this section. B. Variances shall not be issued within any designated f l oodway if any increase in flood levels during the base flood discharge would result. C. Variances shall only be issued upon a determination that the variance is the minimum necessary, considering the flood hazard, to afford relief D. Variances shall only be issued upon: 1. a showing of good and sufficient cause; 2. a determination that failure to grant the variance would result in exceptional hardship to the applicant; and 3. a determination that the granting of a variance will not result in increased flood heights, additional threats to public safety, extraordinary public expense, create nuisances, cause fraud on or victimization of, the public, or conflict with existing local laws or ordinances. E. Variances may be issued for new construction and substantial improvements and for other development necessary for the conduct of a functionally de endent use provided that the provisions of Sections 15.60.190(0 are satisfied and that the structure or other development is protected by methods that minimize flood -13- ORDFLD2[TXTD.01C damages during the base flood and create no additional threats to public safety. F. Any applicant to Whan a variance is granted shall be given written notice that the structure will be permitted to be built with a lowest flood elevation below the regulatory flood elevation and that the cost of flood insurance will be commensurate vri th the increased risk resulting from the reduced lowest flood elevation. A copy of the notice shall be recorded by the Floodplain Board in the office of the San Joaquin County Recorder and shall be recorded in a manner so that it appears in the chain of title of the affected parcel of land. SECTION 2. All ordinances and parts of ordinances in conflict herewith are repealed insofar as such conflict may exist. -14- ORDFLD2/TXTD.01C C O U N C I L C 0 M M U N I C A T 0 N TO: THE CITY COUNCIL COUNCIL MEETING DATE: June 15, 2988 FROM: THE CITY MANAGER'S OFFICE SUBJECT: AMENDMENTS TO ORDINANCE NO, 1400, FLOOD DAMAGE PREVENTION MICATED ACTION: That the City Council introduce the amended Flood Damage Prevention Ordinance as approved by the State Department of Water Resources. BACKGROUND INFORMATION: In June, 1987 the City Council adopted the Flood Damage Prevention Ordinance which i s required if our citizens are to be eligible for Flood Hazard Insurance. Upon review by both the state and federal agencies a number of minor revisions were requested. These changes were oversights by the Community Development staff at the time the Ordinance was prepared. The enclosed Ordinance has been approved by the State Department of Water Resources and the City Attorney. The Federal Emergency Management Administration will accept the Ordinance based on the Water Resources approval. bJ, iAMS B. SCHROF�iER unity Development Cirector CC20/TXTD.01C June 15, 1988 ORDINANCE NO. 1426 FLOOD DAMAGE PREVENTION ARTICLE I GENERAL PROVISIONS 15.60.010 STATUTORY AUTHORIZATION. The Legislature of the State of California has in Government Code Sections 65302, 65560 snd 65800 conferred upon local government units authority to adopt regulations designed to promote the publ i c health, safety, and general welfare of its citizenry. Therefore, the City Council of the City of Lodi does ordain as follows: 15.60.020 FINDINGS OF FACT A. The flood hazard areas of City of Lodi are subject to periodic inundation which results in loss of life and property, health and safety hazards, disruption of commerce and governmental services, extraordinary public expenditures for flood protection and rel ief, and impairment of the tax base, all of which adversely affect the public health, safety and general welfare. B. These flood lossc3 are caused by the cumulative effect of obstructions in areas of special flood hazards which increase flood heights and velocities, and when inadequately anchored, damage uses in other areas. Uses that are inadequately floodproofed, elevated or otherwise protected from flood damage also contribute to the flood loss. 15.60.030 STATEMENT OF PURPOSE. It is the purpose of this ordinance to promote the public health, safety, and general welfare, and to minimize public and private losses due to flood conditions in specific areas by provisions designed: A. To protect human life and health; B. To minimize expenditure of public money for costly flood control projects. C. To minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public; D. To minimize prolonged business interruptions; E. To minimize damage to public facilities and utilities such as water and gas mains, electric, telephone and sewer lines, streets and bridges located in areas of specia? flood hazard; F. To help maintain a stable tax base by providing for the second use and development of areas of special flood hazard so as to minimize future flood blight areas; A G. To insure that potential buyers are notified that property is in an area of special flood hazard; and H. To insure that those who occupy the areas of special flood hazard assume responsibility for their actions. 15.60.040 METHODS OF REDUCING FLOOD LOSSES. In order to accomplish its purposes, this ordinance includes methods and provisions for: A. Restricting or prohibiting uses which are dangerous tc health, safety, and property due to water or erosion hazards, or which result in damaging increases in erosion or flood heights or velocities; B. Requiring that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; C. Controlling the alteration of natural floodplains, stream channels, and natural protective barriers, which help accommodate or channel flood waters; D. Controlling filling, grading, dredging, and other development whict, may increase flood damage; and, E. Preventing or regulating the construction of flood barriers which will unnaturally divert flood waters or which may increase flood hazards in other areas. 15.60.050 DEFINITIONS. Unless specifically defined below, words or phrases used in this ordinance shal? be interpreted so as to give them the meaning they have in common usage and to give this ordinance its most reasonable application. "Appeal" means a request for a review of the Floodplain Administrator's interpretation of any provision of this ordinance or a request for a variance. 2Area-a€-shallew-€leed4R 2-means-a-des$gnat✓ed-A9;-er-AH-Zeae-en-the-Fleed lasepaaee-Rate-Map- FIRM : --The-Base-€feed-dept hs-range-frem-eae-te-t hi-ee-€eet t -a elearly-de€$ped-ehaaael-does-Ret;-ex$stt-the-pat h-a€-€leed$Rg-is-unpred$et;able-and 4ndet=erm$Ratret-and-ve4eeltry-€low-may-fie-ev$deRtr: "Area of special flood hazard" - See "Special flood hazard area". "Base flood" means the flood having a one percent chance of being equalled or exceeded in any given year (also called the "100 -year flood"). "Basement" means any area of the building having its floor subgrade (below ground level) on a17 sides. "Breakaway walls" are any type of walls, whether solid or lattice, and whether constructed of concrete, masonry, wood, metal, plastic or any other suitable building material which is not part of the structural support of the building and -2- .ORDFLD2/TXTD.OIC which is designed to break away under abnormally high tides or wave action without causing any damage to the structural integrity of the building on which they are used or any buildings to which they might be carried by flood waters. A breakaway wall shall have a safe design loading resistance of not less than ten and no more than twenty pounds per square foot. Use of breakaway walls must be certified by a registered engineer or architect and shall meet the following conditions: 1. Breakaway wall collapse shall result from a water load less than that which would occur during the base flood; and 2. The elevated portion of the building shall not incur any structural damage due to the effects of wind and water loads acting simultaneously in the event of the base flood. "Development" means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations. "Flood or flooding" means a general and temporary condition of partial or complete inundation of normally dry land areas from (1) the overflow of flood waters, (2) the unusual and rapid accumulation or runoff of surface water from any source, and/or (3) the collapse or subsidence of land along the shore of a lake or other body of water as a'result of erosion or undermining caused by waves or currents of water exceeding anticipated cyclical levels or suddenly caused by an unusually high water level in a natural body of water, accompanied by a severe storm, or by an unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by some similarly unusual and unforeseeable event which results in flooding as defined in this definition. "Flood Boundary and Floodway Map" means the official map on which the Federal Emergency Management Agency or Federal Insurance Administration has delineated both the areas of flood hazard and the floodway. "Flood Insurance Rate Map (FIRM)" means the official map on which the Federal Emergency Management Agency or Federal Insurance Administration has delineated both the areas of special flood hazards and the risk premium zones applicable to the community. "Flood Insurance Study" means the official report provided by the Federal Insurance Administration that includes flood profiles, the FIRM, the Flood Boundary and Floodway Map, and the water surface elevation of the base flood. "Floodplain or flood -prone area" means any land area susceptible to being inundated by water from any source (see definition of "flooding"). "Floodplain management" means the operation of an overall program of corrective and preventive measures for reducing flood damaqe, including but not limited to emergency preparedness plans , f lood control works and f loodpi a in management regulations. "Floodplain mana ement regulations" means zoning ordinances, subdivision regulations, building codes, health regulations, special purpose ordinances (such as floodplain ordinance, grading ordinance and erosion control ordinance) and -3- ORDFLD2/TXTD.01C other applications of police power. The terns describes such state or local regulations in any combination thereof, which provide standards for the purpose of flood damage prevention and reduction. "Fl oodproof i ng" means any combination of structural and nonstructural additions, changes, or adjustments to structures which reduce or eliminate facilities. structures and their contents. "Floodway" means the channel of a river 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 one foot. Also referred to as "Regulatory floodway". "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 faci lities. "Highest adjacent grade" means the highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure. "Lowest floor" means the lowest floor of the lowest enclosed area (including basement). An unfinished or flood resistant enclosure, usable solely for parking of vehicles, building access or storage in an area other than a basement area is not considered a building's lowest floor; provided, that such enclosure is not built so as to render the structure in violation of the applicable non -elevation design requirements of this ordinance. "Manufactured home" means a structure, transportable in one or more sections , which is built on a permanent chassis and is designed for use with or without a permanent foundation when connected to the required utilities. For floodplain management purposes the term "manufactured home" also includes park trailers , travel trailers and other similar vehicles placed on a site for greater than 180 consecutive days. "Manufactured home park or subdivision" means a parcel (or contiguous parcels) oT—Fa—nd—Uivided into two or more manufactured home lots for sale or rent. "Mean sea level" means, for purposes of the National Flood Insurance Program, the National Geodetic Vertical Datum (NVD) o f 1929 or other datum, to which base flood elevations shown on a community's Flood Insurance Rate Map are referenced. 'New construction" means, for floodplain management purposes, structures for which the "start of construction" commenced on or after the effective date of a floodplain management regulation adopted by this community. "One hundred ear flood" or "100 -year flood" means a flood which has a one percent annual probability of being equalled or exceeded. I t is identical to the "base flood", which will be the term used throughout this ordinance. -4- ORDFLD2/TXTD.OIC "Person" means an individual or his agent, firm, partnership, association or corporation, or agent of the aforementioned groups, or this state cr its agencies or political subdivisions. "Rem a violation" means to bring the structure or other development into compliance with State or local floodplain management regulations, or, if this is not'possible, to reduce the impacts of its noncompliance. Ways that impacts may be reduced include protecting the structure or other affected development from flood da;nages, implementing the enforcement provisions of the ordinance or otherwise deterring future similar violations, or reducing Federal financial exposure with regard tc the structure or other dcvelopment. "Riverine" means relating to, formed by, or resembling a river (including tributaries), stream, brook, etc. "Special flood hazard area S(SFHA)" means an area having special flood or flood -related erosion hazards, and shown on an FHBM or FIRM as Zone A, A9, Al -30, AE, or A99 or -AH. "Start of Construction" includes substantial improvement, and means the date the building permit was issued, provided the actual start of construction, repair, reconstruction, placement, or other improvement was within 180 days of the permit date. The actual start means either the first placement of permanent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns, or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers, or foundations or the erection of temporary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. "Stracture" means a walled and roofed building, including a gas or liquid storage tank, that is principally above ground, as well as a manufactured home. "Substantial improvement" means any repair, reconstruction, or improvement of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure either: (1) before the improvement or repair is started; or (2) 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, whether or not that alteration affects the external dimensions of the structure. The term does 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 -5- ORDFLD2/TXTD.02C (2) any alteration of a structure listed on the National Register of Historic Places or a State Inventory of Historic Places. "Variance" means a grant of relief from the requirements of this ordinance which permits construction in a manner that would otherwise be prohibited by this ordinance. "Violation" means the failure of a structure or other developn;ent to be fully compliant with the community's floodplain management regu i ati ons . A structure or other development without the elevation certificate, other certifications, or other evidence of compliance required in this ordinance is presumed to be in violation until such time as that documentation is provided. 15.60.060 LANDS TO WHICH THIS ORDINANCE APPLIES. This ordinance shall apply to all areas of special flood hazards, with the jurisdiction of the City of Lodi. 15.60.070 BASIS FOR ESTABLISHING THE AREAS OF SPECIAL FLOOD HAZARD. The areas of special flood hazard, identified by the Federal Emergency Management Agency or the Federal Insurance Administration in a scientific and engineering report entitled "Flood Insurance Study for City of Lodi dated June 18, 1387, with an accompanying Flood Insurance Rate map is hereby adopted by reference and declared to be a part of this ordinance. This Flood Insurance Study is on file at City Hall, 221 West Pine Street, Lodi, California 95240. This Flood Insurance Study is the minimum area of applicability of this ordinance and may be supp.l,�mented by studies for other areas which allow implementation of this ordinance and which are recommended to the City Council by the Floodplain Administrator. 15.60.080 COMPLIANCE No structure or land shall hereafter be constructed, located, extended, converted, or altered without full compliance with the terms of this ordinance and other applicable regulations. Violations of the provisions of this ordinance by failure to comply with any of its requirements (including violations of conditions and safeguards established in connection with conditions) shall constitute a misdemeanor. Nothing herein shall prevent the City Council from taking such lawful action as is necessary to prevent or remedy any violation. 15.60.090 ABROGATION AND GREATER RESTRICTIONS. This ordinance is not intended to repeal, abrogate, or impair any existing easements, covenants, or deed restrictions. However, where this ordinance and another ordinance, easement, covenant, or deed restriction conflict or overlap, whichever imposes the more stringent restrictions hall prevail. 15.60.100 INTERPRETATION. In the interpretation and application of this ordinance, all provisions shall be: A. Considered as minimum requirements; B. Liberally construed in favor of the governing body; and, C. Dwmod neither to limit nor repeal any other powers granted under state statutes. -6- ORDFLD2/TXTD.01C 15.60.110 WARNING AND DISCTAllV1 R OF LIABILITY. The degree of flood protection required by this ordinance is considered reasonable for regulatory purposes and is based on scientific and engineering consideraticns. Larger floods can and will occur on rare occasions. Flood heights may be increased by man-made or natural causes. This ordinance dues not imply that land outside the areas of special flood hazards, or uses perniitted within such areas will be free from flooding o flood damages. This ordinance shall not create liability on the part of City of Lodi , any officer or employee thereof, or the Federal Insurance Administration, for any flood damages that result from reliance on this ordinance or any administrative decision lawfully made thereunder. ARTICLE II ADMINISTRATION 15.60.120 ESTABL;SHMENT OF DEVELOPMENT PERMIT. A Development Permit shall be obtained before construction or development begins within any area of special flood hazards, established in Section 15.60.070. Application for a Development Permit shall be made on forms furnished by the Floodplain Administrator and may include, but not be limited to: plans in duplicate drawn to scale showing the nature, location, dimensions, and elevation of the area in question; exiting or proposed structures, fill, storage of materials, drainage facilities; and the location of the foregoing. Specifically, the following information is required: A. Proposed elevation in relation to mean sea level, of the lowest floor (including basement) of all structures; B. Proposed elevation in relation to mean sea level to which any structure will be floodproofed; C. All appropriate certifications listed in Section 15.60.13013.4 of this ordinance; and D. Description of the extent to which any watercourse will be altered or relocated as a result of proposed development. 15.60.130 THE FLOODPLAIN ADNMIRATOR - DUTIES AND RESPONSIBILITIES A. The Community Development Director is hereby appointed to administer and implement this ordinance by granting or denying development permits in accordance with its provisions. B. The duties and responsibilities of the floodplain administrator shall include, but not be limited to: 1. Permit review. a. Review all development permits to determine that the permit requirements of this ordinance have been satisfied; b. All other required state and federal permits have been obtained; d. The proposed development does not adversely affect the carrying capacity of the-€Ieedway AREAS WHERE BASE FLOOD ELEVATIONS HAVE BEEN DETERMIKED BUT A FLOGDWAY HAS NOT BEEN DESIGNATED. For purposes of this ordinance, "adversely affects" means that the cumulative effect of the proposed development when combined with all other existing and anticipated development will not increase the water surface elevation of the base flood more than one foot any point. 2. Use of Other Base Flood Data. What base flood elevation data has not been provided in accordance with Section 15.60.070, the Floodplain Administrator shall obtain, review, and reasonably utilize any base flood elevation and floodway data available from a Federal, State or other source, in order to administer Section 15.60.140 through 15.60.180. Any such information shall be submitted to the City Council for adoption. 3. Whenever a watercourse is to be altered or relocated: a. Notify adjacent communities and the California Department of Water Resources prior to such alteration or relocation of a watercourse, and submit evidence of such notification to the Federal Insurance Administration; b. Require that the flood carrying capacity of the altered or relocated portion of said watercourse is maintained., 4. Obtain and maintain for public inspection and make available as needed: a. the certification required in Section 15.60.140(C)(1) (floor elevations) ; b. the certification required in Section 15.60.140(C)(2) (elevation or floodproofing of nonresidential structures); c. the certification required in Section 15.60.140(C)(3) (wet floodproofing standard) ; d. the certified elevation required in Section 15.60.160 (subdivision standards); e. the certification required in Section 15.60.180 (floodway encroachments). 5. Make interpretations where needed, as to the exact location of the boundaries of the areas of special flood hazards,(for example, where there appears to be a conflict between a mapped boundary and actual field conditions). The person contesting the location of the boundary shall be given a reasonable opportunity to appeal the interpretation as provided in Section 15.60.190 and 15.60.200. ORDFLD2/TXTD.01C 6. Take action to remedy violations of this ordinance as specified Section 15.60.080 herein. ARTICLE III PROVISIONS FOR FLOOC HAZARD REDUCTION 15.60.140 STANDARDS OF CONSTRUCTION the following standards are required: A. Anchorins In all areas of special flood hazards 1. All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. 2. Ali manufactured homes shall meet the anchoring standards of Section 15.60.170. B. Construction Materials and Methods. 1. All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage. 2. All new construction and Substantial improvements shall be constructed using methods and practices that minimize flood damage. 3. All new construction and substantial improvements shall be constructed 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, C. Elevation and Floodproofing 1. Nov construction and substantial improvement of any structure shall have the lowest floor, including basement, elevated to or above the base flood elevation. Nonresidential structures may meet the standards in Subdivision 2 of this subsection. Upon the completion of the structure the elevation of the lowest floor including basement shall be certified by a registered professional engineer or surveyor, or verified by the community building inspector to be properly elevated. Such certification or verification shall be provided to the Floodplain Administrator. 2: New-eenstruetien-and-sebstant}al-4mpreversent-e€-any structure-4n-zene-AH-er-AB-shall-have-the-lowest-€leen; lneleding-basement;-elevated-aheve-the-h}ghest-adjaeent-grade at- least- as-high-as-the-depth-number-speelr}ed-ln-€eet-en-the FIRM-,-er-at-least-twe-feet-4f-ne-depth-number-4s-speelr}ed: Nenres}dentlal-struetares-mar-meet-the-standards-4n-Seet}en -9- ORDFLD2/TXTD.01C 5-?-6-3--ripen-the-eernpletleH-e€-the-structure-the-elevat}eH-e€ the-fewest-€leer}:sE�ed�pg-base�ee�-sbal�-be-ee�t}€}ed-by-a red}stered-pre€ess�enal-enD}Hees-er-surveyer;-er-ver}€ped-by the-ee►itnen}ty-bulld}ng-4Hspeeter-to-be-prepeFly-elevated: �ueq-Eert}€}Eat}eH-er-ver}€}Eat}eH-shall-be-prevlded-te-the Fleedplaln-Ads}nlstrater- 2. Nonresidential construction shall either be elevated in conformance with Subdivisions 1 or 2 of this subsection, or together with attendant utility and sanitary facilities: a. be flocdproofed so that below the base flocd level 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 subsection are satisfied. Such certifications shall be provided to the Floodplain Administrator. 3. Require, for all mw construction and substantial improvements, 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 requirement must either be certified by a registered professional engineer or architect or meet or exceed the following minimum criteria: 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 coverings or devices provided that they permit the automatic entry and exit of floodwaters ; or b. & certified to comply with a local floodproofing standard approved by the Federal Insurance Admini stration . 4. Manufactured homes shall also meet the standards in Section 15.60.170. 15.60.150 STANDARDS FOR UTILITIES A. All new and replacement water supply and sanitary sewage systems shall be designed to minimize or eliminate infiltration of -10- ORDFLD2/TXTD.01C flood waters into the system and discharge from systems into flood waters. B. On-site waste disposal systems shalt be located to avoid impairment to them or contamination from them during flooding. 15.60.160 STANDARDS FOR SUBDIVISIONS. A. All preliminary subdivision proposals shall identify the flood hazard area and the elevation of the base flood. B. All final subdivision plans will provide the elevation of proposed structures) and pads. If the site is filled above the base flood, the final pad elevation shall be certified by a registered professional engineer or surveyor and provided to the Floodplain Administrator. C. All subdivision proposals shall be consistent with the need to minimize flood damage. D. All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage. E. All subdivisions shall provide adequate drainage to reduce exposure to flood hazards. 15.60.170 STANDARDS FOR MANUFACTURED HOMES. All new and replacement manufactured homes and additions to manufactured hones shall: A. & elevated so that the lowest .floor is at or above the base flood elevation; and B. & securely anchored to a permanent foundation system to resist flotation, collapse or lateral movement. 15.60.180 FLOODWAYS. Located within areas of special flood hazard established in Section 15.60.070 are areas designated as floodways. Since the floodway -is an extremely hazardous area due to the velocity of flood water which carry debris, potential projectiles, and erosion potential, the following provisions apply: A. Prohibit encroachments, including fill, new construction , substantial improvements, and other development unless certification by a registered professional engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge. B. If Subsection A of this section is satisfied, all new construction substantial improvements shall comply with al l other applicable flood hazard reduction provisions of Section 15.60.140 through 15.60.180. -11- ORDFLD2/TXTD.01C ARTICLE 1V APPEALS 15.60.190 Appeal board - Factors to consider when granting variances. A. The City Council of City of Lodi shall hear and decide appeals and requests for variances from the requirements of this ordinance. B. The City Council shall hear and decide appeals when it is alleged there is an error in any requirement, decision, or determination made by the Floodplain Administrator in the enforcement or administration of this ordinance. C. In passing upon such applications, the Cit..y Council shall consider all technical evaluations, all relevant 4 :tors, standards specified in other sections of this ordi n: ice, and: 1. the danger that materials may be swept onto other lands to the injury of others; 2. the danger of life and property due to flooding or erosion damage; 3. the susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner; 4. the importance of the services provided by the proposed facility to the community; 5. the necessity to the facility of a waterfront location, where applicable; 6. the availability of alternative locations for the proposed use which are not subject to flooding or erosion damage; 7. the compatibility of the proposed use with existing and anticipated development; 8. the relationship of the proposed use to the comprehensive plan and floodplain management program fore that area; 9. the safety of access to the property in time of flood for ordinary and emergency vehicles; 10. the expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters expected at the site; - and, 11. the costs of providing governmental services during and after flood conditions, including maintenance and repair of public utilities and facilities such as sewer, gas, electrical, and water system, and streets and bridges. ORDFLD2/TXTD.01C D. Generally, variances may be issued for new construction and substantial improvements to be erected on a lot of one-half acre or less in size contiguous to and surrounded by lots with existing structures constructed below the base flood level, providing the provisions cf Subsection C of this section have been fully considered. As the lot size increases beyond one-half acre, the technical justification required for issuing the variance increases. E. Upon consideration of the factors of Subsection C of this section and the purposes of this ordinance, the City Council may attach such conditions to the granting of variances as it deems necessary to further the purposes of this ordinance. F. The Floodplain; Administrator shall maintain the records of all appeal actions and report any variances to the Federal. Insurance Administration upon request. 15.60.200 CONDITIONS FOR VARIANCES A. Variances may be issued for the reconstruction, rehabilitation or restoration of structures listed in the National Register of Historic Places or the State Inventory of Historic Places, without regard to the procedures set forth in the remainder of this section. B. Variances shall not be issued within any designated floodway if any increase in flood levels during the base flood discharge would result. C. Variances shall only be issued upon a determination that the variance is the minimum necessary, considering the flood hazard, to afford relief. D. Variances shall only be issued upon: 1. a showing of good and sufficient cause; 2. a determination that failure to grant the variance would result in exceptional hardship to the applicant; and 3. a determination that the granting of a variance will not result in increased flood heights, additional threats to public safety, extraordinary public expense, create nuisances, cause fraud on or victimization of, the public, or conflict with existing local laws or ordinances. E. Variances may be issued for my construction and substantial improvements and for other development necessary for the conduct of a functionally dependent use provided that the provisions of Sections 15.60.190(C) are satisfied and that the structure or other development is protected by methods that minimize flood -13- ORDFLD2/TXTD.01C damages during the base flood and create no additional threats to public safety. F. Any applicant to whom a variance is granted shall be given written notice that the structure will be permitted to be built with a lowest flood elevation below the regulatory flood elevation and that the cost of flood insurance will be commensurate with the increased risk resulting from the reduced lowest flood elevation. A copy o f the notice shall be recorded by the Floodplain Board i n the office of the San Joaquin County Recorder and shall be recorded i n a manner so t h a t i t appears i n the chain of t i t l e of the affected parcel o f land. SECTION 2. Ordinance No. 1400 i s hereby repealed. All other ordinances and parts of ordinances in conflict herewith are repealed insofar as such conflict may exist. -24- ORDFLD2/TXTD.OIC SBCTION 3. This ordinance shall be published one time in the "Lodi N bAs Sentinel", a daily newspaper of general circulation printed and published in the City of Lodi and shall be in force and take effect thirty days from and after its passage and approval. Approved this 22nd day of June, 1988 JAMES W. PINKERTON, JR. Mayor Attest ALICE M. REIMCHE City Clerk State of California County of San Joaquin, ss. I, Alice M. Reimche, City Clerk of the City of Lodi, do hereby certify that Ordinance No. 1426 was introduced at a regular meeting of the City Council of the City of Lodi held June 15, 1988 and was thereafter passed, adopted and ordered to print at a regular meeting of said Council held June 22, 1988 by the following vote: Ayes : Council Members - Noes : Council Members - Absent: Council Mernbm - Abstain: Council Men-bm - I further certify that Ordinance No. 1426 was approved and signed by the Mayor on the date of its passage and the same has been published pursuant to law. ALICE M. REIMCHE City Clerk Approved a s t o Form BOB McNATT City Attorney ORDFLD2/TXTD.0IC