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5050.4 3/21/80 6 An opportunity shall be provided for early public review of base floodplain encroachments. This may be accomplished through existing public involvement procedures as indicated in paragraphs 45, 48e, and 49. Any public bearing presentations shall include identification of encroach- ments. If one or more of the alternatives under consideration include significant floodplain encroachments, any public notices, notices offering, the opportunity for a public hearing, public hearing notices, and notices of the availability of environmental assessments shall make reference to that fact. (h) If no significant encroachment within a base floodplain is involved as defined in subparagraph (g)3 above, it may be assumed that there would be no significant floodplain impact. No further analysis and no special floodplains findings are necessary. (i) If a significant encroachment is involved which could result in either loss of life or substantial future damage or both but would not result in notable adverse impacts on natural and beneficial floodplain values, these circumstances do not by themselves require the preparation of an environ- mental impact statement. CEQ 1508.14 states that "...economic or social effects are not intended by themselves to require preparation of an environ- mental impact statement." While further consideration on the floodplains aspects of the proposed action would be prudent on the part of the sponsor and the FAA before proceeding, a finding of no significant impact is the appropriate action choice in this circumstance assuming there are no other significant environmental impacts associated with the action. The findings delineated in paragraph 94b(6) would be required for the project decision. (j) If a significant encroachment is involved which would result in notable adverse impacts on natural and beneficial floodplain values, this would require the preparation of an environmental impact statement and further analysis as described in paragraph 85.1. (13) Coastal Zone Management Program. (a) Detailed procedures for determining Federal consistency with approved coastal zone management programs are contained in the National Oceanic and Atmospheric Administration (NOAA) Regulations (15 C.F.R. Part 930). The sections most relevant to airport actions are subpart D, Consistency for Activities Requiring a Federal License or Permit, and subpart F, Consistency for Federal Assistance to State and Local Governments. If there is no approved state program, the instructions below do not apply. However, the environmental assessment shall in any case consider impacts on coastal areas. This may be done through analyses performed under other impact categories (e.g., water quality, biotic communities, construction impacts) as appropriate, using the thresholds established under these respective categories. If thresholds of significance are exceeded, a more detailed coastal area and/or marine analysis may be necessary in an environmental impact statement. Coastal areas may also be designated as wetlands and require the special treatment described in paragraph 47e(11) above. Chap 5 Par 47