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Guide Fo~ Approximate Zone A Areas o):)~aiDinq '. BFBs FEMA regularly conducts restudies of flood hazards in an effort to keep Flood Insurance Studies accurate and up-to- date. As part of these restudies, detailed BFE data for approximate Zone A areas may be developed. During the time that elapses between FEMA obtaining restudy data and the incorporation of BFEdata areas into a revised Flood Insurance Study, a community may reasonably use the BFE data from the restudy in approximate Zone A areas in accordance with Subparagraph 60.3(b) (4). In addition, flooding sources restudied by FEMA may often impact several communities. FEMAmay be unable to immediately update the Flood Insurance Study for every community impacted due to funding constraints. Therefore, BFEs may have been developed for streams within a community that have not yet been incorporated into. the Flood Insurance Study. It is also possible that a previous request to revise flood hazards along a stream or lake may be on file with FEMA, and that BFEs, which may be applicable to other areas of the same stream or lake, may have been computed for that request. FEMA data should be sought when trying to obtain or determine BFEs for an approximate Zone A area, so that ifBFEs have already been determined for an approximate Zone A area, then otherBFE determinations in the same area can be based on the same methodology. However, if it is determined that a more scientifically or technically accurate determination than that which is available in FEMA's back-up data is warranted, then a more detailed methodology, such as. those described in Section V, should be utilized. Data requests should be directed to the appropriate FEMA technical evaluation contractor at the address listed on the following page: J IV-2