Lynnhaven River Basin Phase II Reef

The purpose of this acquisition is to construct the Lynnhaven River Basin Phase II Reef. The reef will be constructed with a targeted height of 12 inches off the river bottom, with the alternative base substrate layer (Size 2 crushed stone) being approximately 6 inches thick and the top fossil oyster shell layer being approximately 6 inches thick. For the fossil shell layer, the Project requires transporting the shell from an existing pile on Craney Island prior to placement within the project boundaries. The shell must also be sorted, clean from debris and fine sediments. All reef substrates will be placed by mechanical clamshell from a barge and recorded by GPS system to ensure proper placement. As-built surveys will be required between substrate layer placement to ensure targeted height is being reached. Reef substrate will be installed per the plan drawings and specifications on the project site in water depths ranging from approximately 7.0? MLLW to 8.3? MLLW. The construction period of performance will be approximately 720 days from issuance of the NTP.