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~ I I I I I I I I I I I I I II I I I f4K5erol Emergency Management Agency grea.ter than 50 lots or 5 a.cres, whIch- ever is the lesser, include within such proposa.ls ba.se flood eleva.tlon data; (4) Obtain, review a.nd rea.sona.blY uti- lize a.ny ba.se flood eleva.tlon a.nd floodwa.y da.ta a.va.l1a.ble from a. Fed- era.l, State, or other source. Includlnr data developed pursuant to pa.ra.gra.ph (b){3) of this section, a.s criteria. for re- qwrinr tha.t new construction, sub- stantialimprovements, or other devel- opment In Zone A on the community's FHBM or FIRM meet the standa.rds In paragraphs (c){2), (c){3), (c){5), (c){6), (cX12), (c){14). (d)(2) and (d){3) of this section; (5) Where base flood elevation da.ta are utilized, within Zone A on the com- munity's FHBM or FIRM: (I) Obtain the eleva.tion (In relation to mean sea. level) of the lowest floor (Including basement) of all new a.nd substantially improved structures, and (II) Obtain, If the structure hu been floodproofed in a.ccorda.nce with para.- gra.ph (c)(3){il) of this section. the ele- va.tion (In relation to mean sea level) to which the structure was floodproofed, a.nd (li1) Main tain a record of all such In- formation with the officla.l designated by the community under !j59.22 (a)(9)(Ii1): (6) Notify. in riverine situations, ad- jacent communities and the State Co- ordina.ting Office prior to a.ny alter- ation or relocation of a wa.tercourse. and submit copies of such notifications to the Administrator; (7) Assure that the flood carrying ca- pacity within the a.ltered or relocated portion of a.ny watercourse Is ma.in- tained; (8) Require tha.t a.ll manufa.ctured homes to be placed within Zone A on a. community's FHBM or FIRM shall be Insta.1led using methods a.nd pra.ctlces which minimize flood dama.ge. For the purposes of this requirement, ma.nufa.c- tured homes must be elevated and an- chored to resist flotation. collapse. or la.tera.l movement. Methods of a.nchor- Ing may include, but are not to be lim- Ited to. use of over-the-top or fra.me ties to ground anchors, This require- ment Is In a.ddltlon to appllcable State a.nd loca.l a.nchorlnr requirements for resisting wind forces. - 560.3 (c) When the Adminlstra.tor ha.s pro- vided a notice of nna.l flood eleva.tlons for one or more specla.l flood ha.za.rd areas on the community's FIRM a.nd. If appropria.te, has deslgna.ted other spa- cla.l flood ha.za.rd a.reas without ba.se flood eleva.tlons on the community's FIRM, but ha.s not ident1f1ed a. regu. latory floodwa.y or coastal high hazard area., the community sha.ll: (l) Require the standa.rds of para.- graph (b) of this section within a.11 Al- 30 zones. AE zones, A zones, AH zones, and AO zones, on the community's FIRM; (2) Require that a.11 new construction a.nd substantia.l Improvements of resi- dential structures within Zones Al-30, AE and AH zones on the communlty's FIRM ha.ve the lowest floor (Including basement) elevated to or above the base flood level. unless the community is granted a.n exception by the Admln- istra.tor for the a.llowance of basements In accorda.nce with f60.6 (b) or (c); (3) Require that a.11 new construction and substantial Improvements of non- residentia.l structures within Zones Al- 30. AE and AH zones on the commu- nity's finn (i) have the lowest floor (In- cluding basement) eleva.ted to or above the base flood level or. (il) together with attendant utility a.nd sanitary fa.- cilities. be deSigned so that below the base flood level the structure Is wa.ter- tight with walls substantially Imper- meable to the passage of water a.nd with structural components ha.ving the capability of resisting hydrostatic and hydrodynamic loa.ds and effects of buoyancy; (4) Provide that where a. non-residen- tial structure is intended to be m&de wa.tertight below the ba.se flood level, (I) a registered professiona.l engineer or architect shall develop and/or review structural design. specifications, and pla.ns for the construction. a.nd sha.ll certify that the design and methods of construction a.re in a.ccorda.nce with ac- cepted standa.rds of prActice for meet- ing the appllca.ble proviSions of pa.ra.- gra.ph (c}(3){1I) or (c)(8)(1I) of this sec- tion, a.nd (11) a record of such certifi- cates which Includes the specific ele- vation (In relation to mea.n sea. level) to which such structures a.re fioodproofed shall be ma.lnta.lned with l. 237