It will be built out of Redi-Rock, an interlocking wall system made of natural materials. Northwoods Engineering, based in Saranac Lake, designed the new structure.
The 3-to-4-foot height meets building codes and is designed to reduce future flooding potential, Darrah explained.
“Since the retaining-wall site is located in a hamlet, this is not a Rivers (Act) project.”
In addition, the flood-protection project allows 400 square feet of stone riprap to be placed along the river side of the wall to prevent scour damage.
APA held a public hearing on the proposed wall on Sept. 24 in Harrietstown.
No one from the public attended the meeting, Darrah said, and no comment letters were received by APA in the review process.
The River Walk boardwalk that winds against the waterfront will remain in place outside of the retaining wall.
The flood-protection device is located on property owned by Harrietstown. The Town Hall also houses Village of Saranac Lake offices.
APA staff said proper storm-water-control systems would be used during construction to protect the Saranac River.
Harrietstown also needs final permits from the U.S. Army Corps of Engineers, the State Department of Transportation and the State Department of Environmental Conservation to complete the work.
Darrah told commissioners the town is working hard to obtain the permits and that construction would likely begin next spring.
The Regulatory Programs Committee voted unanimously to approve the variance, and the project met full board approval Thursday.
The town is waiting for a revised cost estimate from FEMA to put the project in motion.
Harrietstown appealed the original cost estimate made by FEMA .
Insurance did not cover flood damage to the retaining wall.
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