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§60.3 resist floatation, collapse, and lateral floodway unless it his been dem- movement. onstrated thrnu h (13) Notwithstanding any other provi- draulic analyses performed r hydrologic and rd- d- sions of 160.3. a community may ap- ance with standard engineering in accord- prove certain development in Zones Al- tice that the Btneeri encncr encroachment 30, AE, and AH. on the community's would not result proposed e hent FIRM which increase the water surface flood levels within the commnunii increase dur elevation of the base flood by more ing the occurrence of the base flood than one foot. provided that the corn- discharge; munity first applies for a conditional (9) Notwithstanding any other provi- FIRM revision, fulfills the require sions of 860.3. a community may per- ments for such a revision as estab- mit encroachments within the adopted lished under the provisions of 365.12, regulatory floodway that would result and receives the approval of the Ad- in an increase in base flood elevations. ministrator. provided that the community first ap- (14) Require that recreational vehi- plies for a conditional FIRM and Iles placed on sites within Zones A1-30. floodway revision. fulfills the require - AH, and AE on the community's FIRM ments for such revisions as established either under the provisions of §65.12, and re- (i) Be on the site for fewer• than 1B0 ceives the approval of the Adminis- consecutive days, trator. (ii) Be fully licensed and ready for (e) When the Administrator has pro - highway use, or vided a notice of final base flood ele- (iii) Meet the permit requirements of vations within Zones A1-30 and/or AE paragraph (bxl) of this section and the on the community's FIRM and, if ap- elevation and anchoring requirements propriate, has designated AH zones, AO for "manufactured homes" in para- zones. A99 zones. and A zones on the graph (c)(6) of this section. community's FIRM, and has identified A recreational vehicle is ready for on the community's FIRM coastal high highway' use if it is on its wheels or hazard areas by designating Zones VI- Jacking system, is attached to the site 30. VE, and/or V. the community shall: only by quick disconnect type utilities (1) Meet the requirements of para- and security devices, and has no per- graphs (c)(1) through (14) of this sec - manently attached additions. tion: (d) When the Administrator has pro- (2) Within Zones V1-30, VE. and V on vided a notice of final base flood ele- a community's FIRM, (i ) obtain the vations within Zones A1-30 and/or AE elevation (in relation to mean sea on the community's FIRM and, if ap- level) of the bottom of the lowest propriate, has designated AO zones, AH structural member of the lowest floor zones, A99 zones, and A zones on the (excluding pilings and columns) of all Community's FIRM, and has provided new and substantially improved strut- data from which the community shall tures, and whether or not such struc- designate its regulatory floodway, the tures contain a basement, and (ii) community shall: maintain a record of all such informa- 1 (1) Meet the requirements of para- tion with the official designated by the graphs (c) (1) through (14) of this sec- community under §59.22(ax9)(iii); tion; (3) Provide that all new construction (2) Select and adopt a regulatory within Zones V1 -30. VE. and V on the floodway based on the principle that community's FIRM is located Landward the area chosen for the regulatory of the reach of mean high tide; floodway must be designed to carry the (4) Provide that all new construction waters of the base flood, without in- and substantial improvements in Zones creasing the water surface elevation of V1-30 and VE. and also Zone V if base that flood more than one foot at any flood elevation data is available, on the point; community's FIRM. are elevated on (3) Prohibit encroachments, includ- pilings and columns so that (i) the bot- ing fill. new construction, substantial tom of the lowest horizontal structural w in ements, and other development member of the lowest floor (excluding the adopted regulatory the pilings or columns) is elevated to