Ord 1990-037 - Laserfiche WebLink

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-l2- ( l) have the lowest floor (including basement) elevated above the highest adjacent grade at least as high as the depth number specified in feet on the community's FIRM (at least two (2) feet if no depth number is specified); or (2) together with attendant utility and sanitary facilities be designed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads or effects of buoyancy. (c) A registered professional engineer or architect shall submit a certification to the floodplain administrator that the standards of this section are satisfied. (d) Within zones AH or AO, adequate drainage paths shall be required, around structures on slopes, to guide flood waters around and away from proposed structures. Sec. 5-67 Floodvays. Located within areas of special flood hazard are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of flood waters which carry debris, potential projectiles and erosion potential, the following provisions shall apply: (a) Encroachments are prohibited, including fill, new construction, substantial improvements and other developments unless certification by a professional registered engineer is provided demonstrating that encroachments shall not result in any increase in flood levels within the jurisdiction during the occurrence of the base flood discharge. (b) If section 5-67(a) above is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of this article. Sec. 5-68 Existing structures. Structures and uses of structures which lawfully exist prior to adoption of these standards and which do not conform with their provisions, may be continued subject to the following conditions: (a) Existing structures and uses within a floodway shall not be expanded or enlarged unless the effect of proposed expansion or enlargement does not cause an additional increase in floodway elevation during the occurrence of the base flood discharge, as certified by a registered professional engineer. (b) Any repair, reconst:=uction or improvement of an existing structure within a floodplain which constitutes substantial improvement shall be undertaken only in full compliance with this article, and the owner shall be required to obtain a floodplain permit before repair, reconstruction or improvement shall begin. SECTION 2. Until such time as the Flood Insurance Study, with accompanying maps, referred to in Sec. 5-52 of the San Marcos Code of Ordinances, becomes effective on September 5, 1990, areas of special flood hazard within the City shall be those identified by the Federal Emergency Management Agency in a scientific and engine,aring report entitled, "The Flood Insurance Study for San Marcos, Texas," dated Septt~mber, 1983. SECTION 3. That if any word, phrase, clause, sentence, or paragraph of this ordinance is held to be unconstitutional or invalid by a court of competent jurisdiction, the remaining provisions of this ordinance shall remain in effect as if the unconstitutional or invalid portion had not been adopted. SECTION 4. That all ordinances or parts of ordinances in conflict with this ordinance are hereby repealed.