Salt Marsh Habitat Restoration through Thin Layer Application â The ...
Salt Marsh Habitat Restoration through Thin Layer Application – The Design Process Mary Paist-Goldman, P.E. Princeton Hydro [email protected] 908-237-5660 x. 116
pH PrincetonHydro.com
Project Partners
pH PrincetonHydro.com
Two demonstration sites
Avalon Project Site – Thin-layer placement spread over 5 cells Fortescue Project Site – Thin-layer placement spread over two cells. Additional activities include beach restoration and dune reconstruction
pH PrincetonHydro.com
pH PrincetonHydro.com
From idea to implementation
Establish a tide range
Set biobench marks & complete topo survey
Conduct soils analysis
Develop design plans
Submit permits
Receive approval
Place material
pH PrincetonHydro.com
Establishing a Tide Range Typical sources for tide ranges include: • NOAA VDATUM • NOAA Tide gauges •
•
NJ Tide Telemetry System •
•
https://tidesandcurrents.noaa. gov/map/ https://tidesandcurrents.noaa. gov/map/
Tide range data collection onsite
pH PrincetonHydro.com
Biobenchmarks and Topographic Survey Biobenchmark Process • Identify vegetation type (Spartina patens, Spartina alterniflora, Distichlis spicata) • Note vegetation vigor • Survey elevation at which vegetation exists Topgraphic survey • Aerial • Land
pH PrincetonHydro.com
Soils investigation
Dredge material investigation Physical testing Chemical testing Marsh material investigation Physical Chemical
pH PrincetonHydro.com
Placement plan
pH PrincetonHydro.com
Develop Engineering Plans: Key Design decisions
Target Elevation/Placement thickness Containment measures Dredge placement technique Planting plans
pH PrincetonHydro.com
Design Plans
pH PrincetonHydro.com
Setting the target elevations Select target community (i.e. high marsh, low marsh, mud flat)
Consider biobenchmark information
Estimate settlement rate of dredge material to be placed Review existing topographic information to determine material thickness pH PrincetonHydro.com
Containment Types
Coir logs Filtrexx FilterSoxx Curlex blocs Silt fence Haybales
pH PrincetonHydro.com
Containment
pH PrincetonHydro.com
Permits
NJDEP Coastal General Permit 24 – Living Shorelines Army Corps of Engineers Individual Permit
pH PrincetonHydro.com
Implementation
[
Active Material Placement
pH PrincetonHydro.com
Lessons Learned
Containment material type and placement is important Rate of consolidation plays a big role in placement Material sorting may have implications on marsh recovery
pH PrincetonHydro.com
Thank you! Mary Paist-Goldman, P.E. Princeton Hydro [email protected] 908-237-5660 x. 116
pH PrincetonHydro.com
pH PrincetonHydro.com
Project Partners
pH PrincetonHydro.com
Two demonstration sites
Avalon Project Site – Thin-layer placement spread over 5 cells Fortescue Project Site – Thin-layer placement spread over two cells. Additional activities include beach restoration and dune reconstruction
pH PrincetonHydro.com
pH PrincetonHydro.com
From idea to implementation
Establish a tide range
Set biobench marks & complete topo survey
Conduct soils analysis
Develop design plans
Submit permits
Receive approval
Place material
pH PrincetonHydro.com
Establishing a Tide Range Typical sources for tide ranges include: • NOAA VDATUM • NOAA Tide gauges •
•
NJ Tide Telemetry System •
•
https://tidesandcurrents.noaa. gov/map/ https://tidesandcurrents.noaa. gov/map/
Tide range data collection onsite
pH PrincetonHydro.com
Biobenchmarks and Topographic Survey Biobenchmark Process • Identify vegetation type (Spartina patens, Spartina alterniflora, Distichlis spicata) • Note vegetation vigor • Survey elevation at which vegetation exists Topgraphic survey • Aerial • Land
pH PrincetonHydro.com
Soils investigation
Dredge material investigation Physical testing Chemical testing Marsh material investigation Physical Chemical
pH PrincetonHydro.com
Placement plan
pH PrincetonHydro.com
Develop Engineering Plans: Key Design decisions
Target Elevation/Placement thickness Containment measures Dredge placement technique Planting plans
pH PrincetonHydro.com
Design Plans
pH PrincetonHydro.com
Setting the target elevations Select target community (i.e. high marsh, low marsh, mud flat)
Consider biobenchmark information
Estimate settlement rate of dredge material to be placed Review existing topographic information to determine material thickness pH PrincetonHydro.com
Containment Types
Coir logs Filtrexx FilterSoxx Curlex blocs Silt fence Haybales
pH PrincetonHydro.com
Containment
pH PrincetonHydro.com
Permits
NJDEP Coastal General Permit 24 – Living Shorelines Army Corps of Engineers Individual Permit
pH PrincetonHydro.com
Implementation
[
Active Material Placement
pH PrincetonHydro.com
Lessons Learned
Containment material type and placement is important Rate of consolidation plays a big role in placement Material sorting may have implications on marsh recovery
pH PrincetonHydro.com
Thank you! Mary Paist-Goldman, P.E. Princeton Hydro [email protected] 908-237-5660 x. 116
pH PrincetonHydro.com
