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SWG-2011-00561 Port Isabel Public Improvement District, Cameron County

Published June 26, 2012
Expiration date: 7/27/2012

Full Public Notice    Project Plans

The applicant proposes to bulkhead and fill areas along West Tarpon

Avenue, West Bass Avenue, as well as an undeveloped portion of Oyster Cove that is included

within the Port Isabel Improvement District. The purpose of this project is to develop the area for

residential lots. The project will include the installation of a bulkhead, placement of associated

backfill, installation of infrastructure, and roadway improvements. The project will result in the

permanent filling of 4.955 acres of jurisdictional area, including 0.455 acres of wetlands, 0.13 acres

of shallow water habitat, and 4.37 acres of area classified as sand tidal flat. To account for

jurisdictional area not delineated as wetlands, the applicant included the low lying areas (elevations

below 2.0 feet MSL) as sand tidal flat habitat. The 6,953 feet of bulkhead (3,856 feet along West

Tarpon Avenue, 2,705 feet along West Bass Avenue, and 392 feet along Oyster Cove) will be

constructed along historic shoreline boundaries using ultra composite sheet piling. Upon installation

of the bulkhead, the area between the seawall and the existing mean high tide line would be

backfilled with native soil, thereby bringing the properties to an elevation consistent with the

bulkhead. It is anticipated that the backfill will be placed from the bulkhead to at least 1 foot above

sea level. The proposed bulkhead alignment will be located on or inland of the jurisdictional line

along Oyster Cove, thus no impacts to jurisdictional waters are anticipated. The applicant

anticipates temporary impacts during the construction of the bulkhead, which will extend 5 feet

waterward from the location of the bulkhead, due to the method of construction involving driving

the sheetpile. This will result in temporary wetland impacts to 0.32 acres on West Tarpon Avenue

and 0.15 acres on West Bass Avenue.