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032 <br />Mr. John A. Crumpton <br />April 23, 2008 <br />Page S of 11 <br />FEMA Permitting <br />A flood study will be conducted to evaluate the upstream and <br />downstream impacts on flood mapping resulting from the new spillway <br />configuration. The dam rehabilitation project is located on FEMA- <br />regulated streams that include Lick Creek and Lick Creek Tributary 3. <br />Proposed construction will be conducted within the floodway and <br />floodplain currently mapped by FEMA and the North Carolina <br />Floodplain Mapping Program (NCFMP). The new spillway system will <br />result in a change to the published Base Flood Elevations (13FE) and likely <br />impact the existing base flood and floodway elevations. (We are <br />anticipating that the elevations will be lower since the new spillway <br />system will be larger.) Any proposed improvements though within the <br />floodway would represent an impact (or encroachment) and therefore <br />require a "flood study" to define the extent of the impacts to confirm that <br />they are within the allowable tolerances expressed by the Federal <br />Regulations. Within certain tolerances either increase or decrease, the <br />flood plain mapping must be revised. This regulatory process is referred <br />to as a Conditional Letter of Map Revision (CLOMR) or Letter of Map <br />Revision (LOMR). Please note that it is possible that the net change is <br />negligible in which case we would apply for a No-Rise (or No-Impact) <br />permit. The technical analysis to demonstrate such is the same as the <br />CLOMR we simply do not have to file for the permits nor pay any <br />permitting fees. In Phase 1, the following elements of the FEMA process <br />would be performed: <br />Preliminary Investigation <br />Order hydraulic and hydrologic data from FEMA. <br />Review data and discuss recommended strategies <br />with FEMA and local floodplain administrator. <br />Perform preliminary hydrologic and hydraulic <br />analyses. <br />6. Wetlands 401/404 Permitting (Arnry Corps of Engineers) <br />The services rendered in Phase 1 will consist of the field delineation of <br />jurisdictional waters/wetland boundaries on the impacted project site. <br />Wetlands will be defined using the Routine On-Site Determination <br />method as described in the 1987 "Corps of Engineers Wetlands <br />Delineation Manual". Depending on the type and extent of waters of the <br />L' - <br />