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Supplemental Environmental Assessment for Diamondhead Waste Water Treatment Plant Sewer Line and Outfall Structure, Hancock County, Mississippi (December 2012)

The Diamondhead Water and Sewer District (District) in Hancock County, Mississippi has applied to the Federal Emergency Management Agency (FEMA) for assistance with construction of a 30-inch-diameter underground sewer line that would connect the District’s proposed Wastewater Treatment Plant (WWTP), north of Interstate 10 (I-10) to the outflow structure located on the Jourdan River, south of I-10.  This project is part of an overall plan to relocate the District’s existing WWTP and improve the District’s services.  On August 29, 2005, Hurricane Katrina struck the Mississippi Gulf Coast, causing a storm surge that reached nearly 25 ft and devastated large portions of the District’s service area, which includes approximately 4,300 customers. District facilities, including the Diamondhead WWTP, were severely damaged by the storm’s wind and floodwaters. The WWTP will be relocated to higher elevations, outside of the floodplain, to increase reliability and minimize future damages and service disruptions. In accordance with 44 Code of Federal Regulations (CFR) for FEMA, Subpart B, Agency Implementing Procedures, Part 10.9, this SEA has been prepared pursuant to Section 102 of the National Environmental Policy Act (NEPA) of 1969, as implemented by the regulations promulgated by the President’s Council on Environmental Quality (CEQ; 40 CFR Parts 1500 1508).