Real Estate Development Trends Create Alternative Sand Sources for our Beaches Florida Shore and Beach Preservation Association September 2015 1 Nicholas Zwemer, P.E.
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Real Estate Development Trends Create Alternative Sand Sources for our Beaches
Florida Shore and Beach Preservation AssociationSeptember 2015
1
Nicholas Zwemer, P.E.
The return of the cranes
• Improving economy, beautiful beaches = rising property values
Ho do de elopers ma imi e ROI?• How do developers maximize ROI?
• Going vertical with construction• Taller, denser structures • Deep foundation systems
• Vertical = more excavated sand
2
Why should cars have such great views?
• Buildings highly engineered
Ad anced constr ction methods• Advanced construction methods• Robotic lift systems• Water-proofing
• Parking structures can extend further below grade
• Valuable ocean views preserved
3
Previous Trend Current Trend
How much sand are we talking about?
Ocean• Many coastal development projects
can generate 10,000 - 30,000 CY
CCCL Ocean
• Where can the sand go?
• On-site or within immediate area
• …unless otherwise authorized by DEP
Excavation required to remain within immediate areaimmediate area
4
What is the CCCL?
T i l CCCL l i• CCCL – areas subject to influence of
100-yr storm events
Typical CCCL location
• Ensure reasonable use of private property
• Maintain sand within Coastal Cell
• Coastal Cell bounded by barriers to longshore transport
Haulover Inlet - Gov’t Cut
5
Opportunities for Strategic Beach Management
• Potential for free Native Florida beach sand
• Current JCP’s• Re-fill templates• Cool hot-spots
• Dune & back berm restoration
• Less environmental impact than truck-hault uc au
6
Hurdles?
• Stakeholders coordination
• Compatibility of sand• Compatibility of sand
• Quality Assurance / Quality Control
• Understanding and managing expectations - Public Opinion
7
Case Studies – Group A
City of Sunny Isles Beach
3 miles of shoreline• 3 miles of shoreline
• 7 coastal development projects ~ 60,000 CY (2012 – 2015)
• 3 future projects in permitting ~ 50,000 CY (2016)
1 398 CY 6 700 CY 5 300 CY 2 600 CY1,398 CY 6,700 CY 5,300 CY 2,600 CY
11,000 CY 2,000 CY 35,000 CY15,000 CY 20,000 CY 15,000 CY
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Case Studies – Group A
City of Sunny Isles Beach
Propert o nership concerns• Property ownership concerns
• Developers prefer placing sand in front of their own properties
6,70011,000
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Case Studies – Group A
City of Sunny Isles Beach
Coordination ith m nicipalities for area of greatest need• Coordination with municipalities for area of greatest need
Sand placement area Project site
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Case Studies – Group B
City of Fort Lauderdale
Sand from constr ction est of A1A• Sand from construction west of A1A
• Required meeting of the minds between Local and State officials
• City - preserve views State - beach habitat & storm resilience
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Case Studies – Group B
City of Fort Lauderdale
Lo profile egetation to preser e ie s• Low-profile vegetation to preserve views
• Provides buffer between beach & A1A.
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Case Studies – Group B
Town of Surfside
• 1 mile of shoreline• 1 mile of shoreline
• 17,000 CY - beach
• 6,000 CY - dune
• 5,000 CY - on-site
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Case Studies – Group B
Non-Compliance issues:
Debris fo nd on placed sand
Public Perception issues:
Color • Debris found on placed sand• Insufficient Documentation• Remediation required
• Color• Texture• Background arsenic levels
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Case Studies – Group B
• Remediation:• Turtle season – manual collection
Non t rtle season mechanical sifting• Non-turtle season – mechanical sifting
• Lessons Learned:• On-Site owner representative• Document, Document, Document…
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Case Studies – Group B
City of Miami Beach
P blic perception iss es color of sand• Public perception issues - color of sand
• Non-Compliance issues - debris (including glass)
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Case Studies – Group B
City of Miami Beach
20 000 CY placed along 0 7 miles of shoreline• ~20,000 CY placed along 0.7 miles of shoreline
• Placement not allowed below Seasonal High Water Line
• Attitudes have since shifted
17
Case Studies – Group C – Future Projects
• Cool erosion hotspots – where sand is most needed
Enhanced Sediment QA/QC similar to JCP projects• Enhanced Sediment QA/QC, similar to JCP projects
20,000 CY
20,000 CY
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Conclusions
• Economical sand sources are diminishing
M st take f ll ad antage of all a ailable beach q alit sand so rces• Must take full advantage of all available beach quality sand sources for sustainable and cost-effective beach management
• Case studies only involve excavation east of the CCCL (required by FDEP)
• Opportunity to also utilize sand excavated for coastal development west of the CCCL
19
Contact
Nicholas J. Zwemer, P.E.Project Manager
Danielle H. IrwinDirector
Penny CuttDirector
Coral Gables Officeh h
Tallahassee Officell
Palm Beach Officek464 South Dixie Highway
Coral Gables, Florida 33146t 305‐661‐3655
310 W. College Ave., Suite 211Tallahassee, Florida 32301t 850‐765‐4520
2047 Vista Parkway, Suite 101West Palm Beach, Florida 33411,t 561‐478‐1004
20www.CoastalSystemsInt.com
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