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Chapter 2 How To Use This Guide As indicated by the descriptions of appeals, map revisions, conditional map revisions, and map amendments in Chapter 1, the appropriate process for changing a specific NFIP map is determined by the type of map, the status of the map (e.g., effective, in a statutory 90-day appeal period), and the types of changes to be made. For example, for changes to proposed BFEs during a statutory 90-day appeal period, the appeal process would be appropriate; for changes to the BFEs shown on an effective NFIP map, the map revision process would be appropriate. Therefore, to determine which of the three processes for changing NFIP maps is applicable to your needs, you should follow the two steps outlined in this chapter. In Step 1, you answer the following questions: . What type of NFIP map is to be changed? . What is the status ofthat map? . What types of changes are to be made? The information you need to answer those questions is provided below. In Step 2, you use the answers from Step 1 to choose the appropriate process. The detailed information provided in Step 2 concerning the conditions under which each process is applicable will enable you to make that determination. Once you have identified the appropriate process, you can refer to the chapter in which that process is discussed for additional information concerning procedures and supporti ng data. Step 1--Determining Map To Be Changed and Changes Needed Type of map to be changed. Changes can be made to FHBMs, FIRMs, and FBFMs; however, because the regulations, processing procedures, and required supporting data vary according to the type of map to be changed, it is important that you identify the type of map in question and understand how the information presented on the map was developed. The descriptions of FHBMs, FIRMs, and FBFMs in Chapter 1 and the sample map title blocks shown in Figure 1 will hel p you. Status of the map. When an initial or revised FHBM, FIRM, or FBFM is prepared for a community, it must be reviewed in preliminary form by that community before being published and becoming effective. The status of the map is the stage in the review and publication process that the map has reached. An FHBM presented less information than a FIRM and FBFM, and the information that is presented is the result of analyses that are less rigorous than those employed in the preparation of the FIRM and FBFM. Therefore, the NFIP regulations that apply to a community for which only an FHBM had been issued are less comprehensive, and the ordinances that were adopted by the community were less complex, than those required after a FIRM and FBFM had been issued. Consequently, the review periods and processing procedures varied according to map type. A more lengthy and complex procedure is followed for the community review of a FIRM or a FIRM accompanied by an FBFM. Preliminary copies of the FIRM, and FBFM as necessary, are sent to the community for an initial review. The review is followed by a formal coordination meeting at which community officials and residents may comment on the FIRM and/or FBFM. After any significant problems identified at the meeting are resolved, a notice of the BFEs shown on the FIRM is published in a local newspaper and in the Federal Reqister. At that point, the BFEs are considered proposed. As discussed in Chapter 3, NFIP regulations require that when BFEs are established or changed for a community, the community must be given a statutory 90-day appeal period, during which community officials or property 5