SANDYLAND SHORELINE PROTECTION PROJECT

The proposed Project would repair and restore the 1983 design of the existing 3,700-foot-long Sandyland Seawall (shoreline protection in the form of a rock revetment) located between Sand Point Road residences and the coastline. Specifically, the proposed Project would involve repairing the revetment by placing up to 15,000 tons of 3- to 5-ton armor rocks to achieve the 1983 design of the revetment with a 16.4-foot crest elevation (relative to NAVD88 vertical datum), a 2:1 (horizontal:vertical) seaward slope, and a crest width of 10 feet. The repair would involve minor re-working of the revetment, using new (imported) armor rocks to fill voids in the revetment, correct low points and reduced width in the revetment crest, and address areas where existing armor stone has been dislodged. Where possible, existing displaced armor rock would be salvaged and re-used. In addition, the proposed Project would provide dune vegetation enhancement along the landward splash wall. Existing non-native vegetation would be removed and native dune vegetation would be planted to create additional habitat area. Construction of the dune feature may require the import of a small amount of sand for dune vegetation establishment in locations where sand cover does not exist. Lastly, of the 23 existing private access stairways constructed along the revetment to serve residents of Sand Point Road, under the proposed Project, 12 private access stairways would be demolished, and the design rock revetment would be restored in their place. The remaining 11 existing access stairways would be rebuilt.