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HomeMy WebLinkAboutCC Ord 1036 1978-05-22 t _ I I I ORDINANCE NO. J'~~~ AN ORDINANCE OF THE CITY OF SEAL BEACH, CALIFORNIA, ADDING CHAPTER 9B, FLOOD PLAIN OVERLAY DISTRICT, TO THE SEAL BEACH CITY CODE. THE CITY COUNCIL OF THE CITY OF SEAL BEACH DOES HEREBY ORDAIN AS FOLLOWS: Section 1. Chapter 9B, Flood Plain Overlay District, is hereby added to the Seal Beach City Code as follows: CHAPTER 9B FLOOD PLAIN OVERLAY DISTRICT Sec. 9B-1. Method Used to Analyze Flood Hazards. Selection of a re9u1atory flood which is based upon engineering calculations which permit a consideration of such flood factors as its expected frequency of occurrence, the area inundated, and the depth of [byndation. The regulatory flood selected for this ordinance is representative of large floods known to have occurred in this region and which are reasonably characteristic of what can be expected to occur on the particular streams subject to this ordinance. It is in the general order of a flood which could be expected to occur on the average once every 100 years or has a one per cent (1%) chance of occurrence in anyone year, or as delineated in the Federal Insurance Administration's Flood Insurance Study, and illustrative materials (FIRM) dated June 21, 1974, as amended. Sec. 9B-2. Affected Areas. The Flood Plain Overlay District shall apply to all lands within the Jurisdiction of the City of Seal Beach identified on the Flood Insurance Rate Map (FIRM) as numbered or unnumbered A Zones. Sec. 9B-3. The Enforcement Officer. The City Engineer of the City of Seal Beach is hereby designated as the city's duly designated Enforcement Officer under this ordinance. Sec. 9B-4. Development Permit Required. No person, firm or corporation shall initiate any development or cause the same to be done without first obtaining a separate permit for development for each such building or structure. The City Engineer shall review all building permit applications to determine if the site of the proposed development is reasonably safe from flooding and that all necessary permits have been received as required by Federal or State law (including Section 404 of the Federal Water Pollution Control Act Amendments of 1972, 33 U.S. Code ~334) and make recommendations for development in all locations which have flood hazards. Sec. 9B-5. Standards for the Flood Plain Overlay District. (1) No permit for development shall be granted for new construction, substantial improvements and other improvements including the placement of mobile homes with A Zones unless the conditions of this section are satisfied. (2) All areas identified as unnumbered A Zones on the FIRM are subject to inundation of the 100-year flood; however, the water surface elevation was not srovided. The unnumbered A Zones shall be subject to ailI evelopment provisions of this ordinance except those sections relating to elevation Ordinance Number I or f100dproofing. If Flood Insurance Study data is not available, the community shall utilize any base flood elevation data currently available within its area of jurisdiction. (3) ~ew construction, substantial improvements, prefabricated buildings, placement of mobile homes and other developments shall be designed or anchored to prevent the flotation, collapse or lateral movement due to flooding and will require: (a) New or replacement water to supply systems and/or sanitary sewage systems shall be designed to minimize or eliminate infi1trati'on of flood waters into the systems and discharges from the systems into flood waters, and on-site waste disposal systems shall be located so as to avoid impairment of them or contamination from beyond applicable environmental control limits during flooding. Subdivision proposals and other proposed new development shall be required to assure that (a) all such proposals are consistent with the need to minimize flood damage, (b) all public utilities and facilities, such as sewer, gas, electrical, and water systems are located, elevated and constructed to minimize or eliminate flood damage, (c) adequate drainage is provided so as to reduce exposure to flood hazards, and (d) proposals for development of five (5) acres or fifty (50) lots whichever is lesser, include within such proposals the regulatory flood elevation. . (b) I (c) New development and substantial improvements shall: (1) use construction materials and utility equipment that are resistant to flood damage, and (2) use construction methods and practices that will minimize flood damage, consistent with economic practicability. (d) Utility and Sanitary Faci1itjes - All utility and sanitary facilities shall be f100dproofed up to the regulatory flood protection elevation so that any space below the regulatory flood protection elevation is water tight with walls substantially impermeable to the passage of water with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. (e) Provide that until a floodway has been designated, no development, including landfill, may be permitted within Zones Al-30 on the city's FIRM unless the applicant for the land use has demonstrated that the proposed use, when combined with all other existing and reasonably anticipated uses, will not increase the water surface elevation of the 100-year flood more than one ~l) foot on the average cross section of the reach in which the development or landfill is located as shown on the Flood Insurance Rate Study incorporated by reference; Sec. 9B-l of this ordinance. (f) The governing body shall insure that the flood carrying capacity within the altered or relocated portion of any watercourse is maintained. The city will notify, in riverine situations, adjacent communities and the State Coordinating Office prior to any alteration or relocation of a watercourse, and submit copies of such notifications to the Administrator. Moreover, the city will work with appropriate State and Federal agencies in every way possible in complying with the National Flood Insurance Program in accordance with the National Flood Disaster Protection Act of 1973. I . . Ordinance Number (6) (4) Require new construction or substantial improvements of residential structures to have the lowest floor, including basement elevated to or above the regulatory flood elevation. (5) Require new construction or substantial improvements of non- residential structures to have the lowest floor, including basement, elevated to or above the regulatory flood elevation or, together with attendant utility and sanitary facilities, to be floodproofed up to that level. For new mobile home parks, mobile home subdivisions or expansions, for new mobile homes not in a mobile home park and for existing mobile home parks where the repair, reconstruction or improvement of streets, utilities and pads equals or exceeds 50 per cent of the value of the streets, utilities and pads before the repair, reconstrution or improvement has commenced, it is required that: I I (a) Specific anchoring standards be met: ((1)) Over-the-top ties to be provided at each of the four corners of the mobile home with two additional ties per side at the intermediate locations and mobile homes less than 50 feet long requiring one additional tie per side. ((2)) Frame ties be provided at each corner of the home with five additional ties per side at intermediate points and mobile homes less than 50 feet long requiring four additional ties per side. ((3)) All components of the anchoring system be capable of carrying a force of 4800 pounds. ((4)) Any additions to mobile homes be similarly anchored. (b) Stands or lots are elevated on compacted fill or piers so that the lowest floor of the structure will be at or above the regulatory flood elevation. (c) Adequate surface drainage and easy access for a hauler is provided. (d) In the instance of elevation on piers, lots are large enough to permit steps, pier foundations are placed on stable soil no more than 10 feet apart and steel reinforcement is prOVided for piers more than 6 feet high. Placement is prohibited in the floodway (See Sec. 9B-5(3)(e)) except in existing mobile home parks and existin9 mobile home subdivisions. I Sec. 9B-6. Certification and Information. Flood Proofing - Applicants shall provide certification by a registered professional engineer or architect that the flood proofing plans are adequate to be water ti9ht with walls impermeable to the passage of water and withstand the hydrostatic and hydrodynamic forces associated with the 100-year flood. The City Engineer will maintain the records of certification when issuing development permits in conformance with this section. Sec. 9B-7. Variance. The city will notify the applicant in writing that the issuance of a variance to locate a structure at an elevation below the 100-year flood level will result in increased actuarial rates for flood insurance coverage. I I I . Ordinance Number PASSED, APPROVED AND ADOPTED by the City Council of~~e City o~ Beach at a regular meeting thereof held on the ,.:).::J'!:!Yay of , 1978. ~. J--L/ fi.* Mayor o STATE OF CALIFORNIA COUNTY OF ORANGE CITY OF SEAL BEACH ) l SS I, Jerdys Weir, City Clerk of the City of Seal Beach and ex-officio clerk of the City Council, do hereby certify that the foregoing ordinance was introduced a a meetin of the City Council of the City of Seal Beach held , 1978, and adopted at a meeting ::::," :"0;""' ยท 97. by ~~gZ:t 'c1J~ HOES, C""'1m'~~ ABSENT: counci1me~ PROOF OF PUBLICATION (2015.5 C.C.P.) STATE OF CALIFORNIA. County of Orange I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years. and not a party to or interested in the above-entitled matter. I am the principal clerk of the printer of the .......q~CJ~.}J~.~~~..~q~!l~~................. a newspaper of general circulation. printed and published .. J.\'!!.~Y....................... in the City of .....~!!.~;J,.~!!.'!p))............... County of Orange. and which news- paper has been adjudged a newspaper of general circulation by the Superior Court of the County of Orange. State of California. under the date of..?::?!L 19 7.~.. Case Number ..~::~.~?~~...; that the notice. of which the annexed is a printed copy (set in type not smaller than nonpareill. has been publiShed in each regular and entire Issue of said newspaper and not in any supplement thereof on the following dates. to-wit: ...................~~..~~........................ all in the year 19.7.!L I certify (or declare) under penalty of perjury that the foregoing is true and correct . Dated at....... .~~M. >>l'\fJ.HI;1,................. California. this..~P.th..day of ...;rJ.H1.~. 19 ?~.. o 4C- .....~;;atur:'.................. Free COllies of fhl. blink form me, be lecu.-.d from: CALIFORNIA NEWSPAPER SERVICE BUREAU, INC. Legal Advertising Clearing House 210 South Spring St.. Los Angeles. Calif. 90012 Telephone: 625-2141 Pi.... reQue.t GENERAL Proof of Pullllntlon when orderlnCl this farm. This space is for the County Clerk's Filing Stamp Proof of Publication of ordinance #1036 .......................................................... .......................................................... Paste Clipping of Notice SECUREL Y In This Space I . . ORDINANCE NO. '036 . AN ORDINANCE OF THE CI:rv OF SEAL BEACH, CALIFORNIA, ADDING' I CHAPTER 9B. FLOOD PLAIN OVERLAY OISTllICT. TO THE SEAL BEACH I CITY CODE. , . . THE CITY COUNCIL OF THE CITY OF SEAL BEACH DOES HEREBY ORDAIN AS FOLLOWS: ! Secllon 1 Chapter 88, Flood Plain Overlay astrJct, Is hereby add.:t to the . I Seal Beach CUy Code 81 follows: i CHAPTER 8B FLOOD PlAIN OVERLAY DISTRICT Ieo. 11I-1, Method Uaed to AReI,. Flood HaurdI, Selection of a regulatory flood which II billed upon engineering calCUlations which permit a consideration 9f such flood factors III Ita expect:.:t frequency of occurrence... the ..... Inundated,', end the depth of Inund81lon. The regulatory flOOd selected for this ordinance II representative of I..ge flOOds known to have occurred In thll regton and whlCh..e reuonably characterlllllc of what can be expected to occur on the partICUlar IIIream,sublecl to thil ordinance. It Is In the O8n8l'll1 order of a flood which could be expected to occur on the average once fN8fY 100 year. or has a one per cent (1%) Chance 01 occurrence In any one year, or 81 dehneat.:t In the Federal Insurance Admlnl8lratlon's Flooc:l- Insurance Study, and illustrative material, (FIRM) dated June 2t, 191", 81 amended. Sac. .11-2. A.... Are8.. The Rood Ptaln Overlay Ot.81rlct shall apply to all lands within the JUrlsdlctlon of the CIty 01 Seal Beach Identified on the Flood Insurance Rate Map (FIRM) 81 numbered or unnumbered A Zones. - "Sad. .B-3. T1Ht en....... 0"1cIr. The City Engineer of the City of Seal Beach IS hereby dellgnated 81 the City'S duly dellgnated Enforcement Officer under this ordinance. Sec. .1.... Dnlllapmlnl PermlfAequlrwd. No person, firm or corporabOn shall initiate cany development Dr cauae the same to be done Without first obtaining a separate permit for development for each such bUilding or structure The City Engineer shall review all bUIlding permit appllCBtlons. to determine If the SIte of the proposed development IS reasunably saf. lrom flooding and that all necessary permits have been received as required by Federal or State law (including Section 4Q4. of the Faderal Water Po!lullon Control Act Amendments of 1972, 33 US. Code 133") end make recommendations for development In all locations which have flood hazards. Sec. 11-5. Standards far the FIDOd Plain Overlay District. (1) No pBl'mlt lor development shall be granted for new construction, substanhal Improvements and other Improvements including the placement of mobile homes With A Zones. unless the conditions of thiS section are satisfied I (2) ,J.uar;"'dentlfled as unnumberad A Zones on the FIRM are SUbJect to IlrilihdBtion of the 1DO-year flood; however the water surrace &fevabon was nOl piavlded. The unnumbered A Zones shall be subject to all development provISions of thiS ordinance except those sections relating to elevation or I floOdprooflng.1t Flood Insurance Study data IS not available, the community I shall ut,llze any bale floOd elevahon data currently available Within Its area of Junsdlctlon . (3) New construction. substantial Improvements, prefabrlcatad bUildings, placement of mobile homes and other developments shall be d8llgned or anchored to prevent the flotation, collapse or lateral movement due to flooding and Will reqUire Ca' New or replacement water to supply systems and/or unitary sewage systems shall be dalgned to minimize or ellmlnatelnr,ltrat,on or flood waters Into the systems and discharges 'rom the systems Into flOOd water, and on-site waste disposal systems shall be located 10 81 to aVOid Impairment of them or contarmnatlon from beyond applicable environmental control limits during flOoding. (b) SUbdiVISIon proposals and other proposed new development shall be required to assure that (a) all such proposals are consistent With the need to minimiZe flood damage, (b) all public utlhtla and facilities, such as 18Wer, gas, electncal, and water systems are located, elevated and construclad to minimize or eliminate flood damage, (c) adequate drainage IS proVided 10 81 10 reduce exposure to flood hazards, and (d) proposals for development of flYe (5) acres or flfly (SO) Iota wtuchever Is 18IS8f', Include Within such proposals the regulatory flood elevallon. (c) New developmant and substantial Improvements shall. (1) UI8 constructron materials and utility equipment that are resistant to flood damage, and (2) use ccnslructlon methods and practices that will minimize flood damage, consistent With economic practicability (d) Utlldy and Sanitary Facilities- All utility and sanitary facllllles shall be f100dprooled up to the regulatory flood protection elevation 80 that any space below lhe regulatory flood protection elevation IS water tight With walls substantially Impermeable to lhe passage of water with structural components hiving the capability of resisting hydrostatic and hydrodynamic I~ and "fects of buoyancy. (e) PrOVide ,hat until a f100dway has been dalgnated. no development, including landfill, may be permllled Within Zones AI-3D on the city's FIRM unless the applicant 'or the land use has demonstrated that the proposed use, when combined With all other eXlsllng and reasonably antiCipated USBII, Will nol Increase the water surface elevation of the tDO-year flood more than one (t) foot on the average cr088 section or the reach In whIch the development or landllllls located 88 shown on the Flood Insurance Rate StUdy Incorporated by reference, Sec, 99-1 of thiS ordinance, (f) The governing body shall Insure that the flood carrYing capacity Within the altered or relocated portion of any watercourse 18 maintained The city Will notify, In nvenne 81tuatlons, adjacent communities and the State Coordinating Office prior to any alteration or relocation of a watercourse, and sublmt copies 01 such notlflaltlons to the Administrator. Moreover, the city Will work With appropriate State and Federal agencIes In every way pOSSible In complYing With the National Flood Insurance Program In accordance With the Nallonal Flood Disaster Protecllon Act of 1973 " (") ReqUire new construction or substantial Improvements of residential structur81 to have thelowestlloor, including basement e1evat.fto or above the regulatory flood elevation (5) ReqUire new construction or substantial Improvement. of non-residential structures to have the lowest 1I00r, including baIemen1, elevat.:t TO or above the regulatory flood elevation or, together With attendant utility and samtary faclhtla, to be ,lOOdproofed up to that level (6) For new mobfle home parks, mobile home SUbdlvlllons or expansions, for new mobile homes not In a mobile home park and for exlsllng mobile home parks where the repair, reconstruction or Improvement of I1reets, utilities and pads equals or exceeds 50 per cent of the value of the streets, utilities and pads belore the repBJr, reconstructIOn or Improvement h81 commenced, It IS reqUired that (8) Specific anchOring standards be met: ( (1)) Over-the-top ties to be provld.:t at each of the four CCI1Wl of the mobile home with two additional ties per sute at the intermediate locatIOns and mobile hom8lless than 50 feet long reqUiring one additional tie per Side ( (2)) Frame ties be provIded at each corner of the home with five additional ties per SIde at Intermechate pOints and mobile homes 1881 than 50 feet long. requiring four additional ties per Side. ( (3)) All components of the anchoring system be capable of carrying a force of 4800 pounds. ( (")) Any additions to mobile homes be slmll..1y anchor.:t. (b) Stands or lots are elevated on compacted flU or pin 80 that the lowest floor of the structure Will be at or above the regulatory flood elevation. (c) Adequate surface drainage and IIlIY IICC8D for a hauler is provided. (d) In the Instance of elevation on plen, IOta are lerge enough 10 permit ateps, pier foundation. are placed on .table soli no more than 10 feet apart and steel reinforcement IS provided for pieri more than e feet high, Placement I. prohibited In the flood\vay (See Sec, 98-6(3)(e)) except In oxlstlng mObile home paries and existing mobile home subdiVISions. Sac.81-8. Certification and InfGrmatlon. Flood Proofrng - Applicants shall provide certification by a reglst<<ad profeulonal engineer or archllect that I the flood proofrng plans are adequate to be water light With wall'lm~. to the pBIlIBg8 of water and wlthsland the hydrostatic and hydrodyMlTuc forces BIIOClated With the 1QO.year flood The City Engineer will maintain the records 01 carlllk:atlon when luulng development permit. In conformance With this aectlon. Sec. ."7. Variance. The city wtll notify theapphcant In wrltlng-thlt:1he l8Iuance of a variance to locate a I1ructure at an elevation below tlia 101).year flood level will result In Incr8tlll8d -=tuarlal rates lor flood IftlLlrance cove_ PASSED, APPROVED AND ADOPTED by the City Council of tbeCtty 01 Se8I Beach at . regular meeting thereat' held on the 22nd day of MIy, 1878. Frank J. L.aIzIo Moyer ATTEST: JCltnn& Veo Dtputy CIty Clerk SlATE OJ' CALIFORNIA I) COUNTY OF ORANGE SS CITY OF SEAL BEACH ) I,.lerdys W8Ir, City Clerk of the CitY' of Sell 88l1Ch and u-offlclO clerk of the elt( CounCil, do hereby certify that the foregolng'ordlnance w..lntroduced at a neetlng of the City Council of the City of Seal Beach held on Mly 8, 1918, an. adopted at a meeting held on May 22, 1978, by the follOWing vole: AVES: Councilmen Gray, Kredell, Laszlo, SeltZ, Weir NCES: Councilmen - None ABIENT, Councilmen - None Jtann Veo Ceputy Clly Cler1c --'