6.9.1 Flood Plain (Overlay) District:
6.9.1.1 The Flood Plain Overlay District is herein estab-lished as an overlay district. The underlying permitted uses in all districts are allowed provided that they meet the following additional requirements as well as those of the Massachusetts State Building Code dealing with construction in floodplains. The Flood Plain District includes all special flood hazard areas designated as Zone A, A1_30 on the Stoneham Flood Insurance Rate maps, (FIRM), and the Flood Boundary and Floodway Maps, dated July 3, 1986, on file with the Town Clerk, Planning Board and Inspector of Buildings. These maps as well as the accompanying Stoneham Flood Insurance Study are incorporated herein by reference.
6.9.2 Development Regulations:
6.9.2.1 The following requirements in addition to all other requirements in the underlying district, apply in the Flood Plain Overlay District:
(a) Within Zone A, where the base flood elevation is not provided on the FIRM, the applicant shall obtain any existing base flood elevation data and it shall be reviewed by the Inspector of Buildings for its reasonable utilization toward meeting the elevation or floodproofing require-ments, as appropriate, of the State Building Code.
(b) In the floodway, designated on the Flood Boundary and Floodway Map, the following provisions in addition to all other requirements in the underlying district shall apply:
1. All encroachments, including fill, new construction, substantial improvements to existing structures, and other development are prohibited unless certification by a registered professional engineer is provided by the applicant demonstrating that such encroachment shall not result in any increase in flood levels during the occurrence of the 100_year flood.
2. Any encroachment meeting the above standard shall comply with the floodplain requirements of the State Building Code. (10-21-85, Art.~15; 5_12_86, Art.~12)
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