Agenda - 02-23-2009 - C1 - Laserfiche WebLink

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Attachment 4 27 MEMORANDUM To: Laura Blackmon, County Manager Board of County Commissioners From: Craig N. Benedict,Planning Director Glenn R. Bowles, CFM, AICP Date: January 5, 2009 Subject: 2006 to 2008 (Calendar Year) Summary of Floodplain Management Activities The BOCC approved the funding to provide elevation certificate surveying services for the 2007 fiscal year to property owners affected by the new flood maps. The firm of Greenhorne and O'Mara of Raleigh was selected to provide the elevation certificate surveying. We have received seventy-nine (79) elevation certificates. Seventy-eight (78) certificates were part of the flood elevation certificate surveying program. This activity also resulted from four (4) Letters of Map Amendment. The spreadsheet below summaries the elevation certificate surveying activities. Summary of the Status of Surveyed Structures Now in Always in Not Total SFHA@ SFHA in SFHA* Post-FIRM Houses 12 8 4 0 19 13 35 21 Post-FIRM Acc. Buildings 4 4 6 14 Pre-FIRM Houses 6 4 15 7 22 21 43 32 Pre-FIRM Acc. Buildings 2 8 1 11 Total Houses 18 12 19 7 41 34 78 53 Total Accessory Buildings 6 12 7 25 * The structures were erroneously mapped as being within the floodplain in 1981, but are now outside of the floodplain. @ Structures now within the floodplain because of the new maps. As a result of this mapping we can now state there are now only thirty(30) houses and forty-eight (48) accessory buildings involved within the special flood hazard area(SFHA). Three (3) of these houses are within the mapped floodways, only one (1) residential property is completely involved in the SFHA and six (6)homes have some occupied floor space below the base flood elevation. Other situations, which are related to FEMA flood mapping activities, happened during the 2007-08 fiscal year. They include the following items: 1. Summary of Map Actions (SOMA) for Map Panel 9890. The activities in question occurred entirely within the Town of Chapel Hill. The Town Council has acted correctly on the matter. The action changed the Map Panel suffix from "K" to "L" and the effective date of Map Panel 9890 and the County FIRM Index from February 2, 2007 to May 16, 2008. 2. Letters of Map Revision (LOMR). Four (4) LOMRs have been approved. The first involved the decommissioning and removal of the Eno River dam near the Pleasant Green Road crossing. The second involved a driveway to the Lutz residence on Buckwater Creek. The third involved the Cates Creek Parkway crossing over Cates Creek. The forth involved the Berryman Boulevard crossing over Stroud's Creek in the Fourth Phase of the Churton Grove Subdivision.