HomeMy WebLinkAboutPresentation 5.1.20251
Great Island Homeowners Association
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NOI for Coir Fiber Roll
Array & Sand Nourishment
for Sections of Coastal
Dune Along Great Island
Road
Storm Damage - Winter 2023
•Areas of significant damage
•Further damage threatened loss of
vehicle access to island for year-
round residents and emergency
services
•Yarmouth Cons Comm issued an
Emergency Certification for
geotextile sand bags with sand
cover
Emergency Work
•Bags installed Jan. 8-12
•Sand cover placed Feb. 6-8
•After the fact NOI filed Apr.
2025
•OOC issued Oct. 2024
810 ft
110 ft
OOC Special Conditions
•#17 – replace south area of
geotextiles with fiber rolls
•#18 – submit protocol for
replacing north area of
geotextiles
810 ft
110 ft
Completed March 2025
Current Proactive NOI
•Fiber rolls and dune
nourishment along edge of
road on an as needed basis
only
•Up to 3,400 linear ft
•Trigger for installation is
erosion of dune to within 5
ft of road
•Notice to Cons Comm
regarding intent to install
fiber roll arrays & pre-
construction onsite
•Post-construction as-built,
photographs, and memo
Fiber Roll Array and Nourishment Design
Resource Area Impacts
If entire 3,400 linear feet of
shoreline is protected resource
area impacts would include:
•Primary Coastal Dune –
13,700 sq ft
•Coastal Beach – 48,102 sq ft
•Barrier Beach, Estimated
Habitats of Rare Wildlife &
Land Subject to Coastal
Storm Flowage – 92,633 sq
ft
Ongoing Maintenance
•Maintain fiber rolls for short -
term (3-5 years), while more
resilient solution for Great Island
access can be designed,
permitted, and constructed
•Monitor regularly for dune
erosion and exposure of fiber
rolls
•Renourish as necessary up to 3x
per year to keep fiber rolls
covered with up to 4,000 cy of
beach compatible material
•TOY for nourishment before Apr.
1 or after Aug. 31
Engineering Plans – SW Portion of Site
Existing
Engineering Plans – Central Portion of Site
Engineering Plans – NE Portion of Site