MIAMI HARBOR DEEP DREDGE PROGRAM IN PARTNERSHIP WITH US ARMY CORPS - PowerPoint PPT Presentation

MIAMI HARBOR DEEP DREDGE PROGRAM IN PARTNERSHIP WITH US ARMY CORPS OF ENGINEERS

PortMiami Statistics Economic Impact: Over $18 Billion • Supports 180,000 jobs directly and indirectly •“Cargo Gateway of the Americas” •Approximately 907,607 TEUs •Top Trading Partners: China, Hong Kong, Honduras, Dominican Republic, & Germany •Top Imports: tiles, textiles, fruits, & vegetables •“Cruise Capital of the World” •More than 4 million passengers •Homeport for 31 cruise ships (including Azmara Club Cruises, Carnival Cruise Line, Royal Caribbean Cruise Line, MSC, Costa Cruises, Norwegian Cruise Line, Disney Cruise Line, Celebrity Cruises, Regent Seven Seas Cruises & Oceania Cruises)

Where We Are Today Miami Harbor, Florida

Navigation Improvement Plan Selection • Plan formulation Iteration • Optimize widths – Identify, avoid & minimize impacts to resources • Additional simulations, meetings with Pilots, Resource Agencies, Community Stakeholders, etc…

DE DE E E P DR P DR E E DGE DGE PL PL AN AN E xisting F e de ral Channe l COMPONE NT 3 COMPONE NT 1 COMPONE NT 5 COMPONE NT 2 Component 1: Component 2: Component 3: Component 5: I nc re ase F ishe r I sland Add turn wide ne r at the E xpand be rthing are a Wide n se award po rtio n turning basin fro m 1200 by 60 fe e t and wide n o f Cut-1 fro m 500 to 800 so uthe rn inte rse c tio n o f to 1500 fe e t; trunc ate NE so uthe rn e dge o f fe e t; de e pe n Cut-1 and Cut-3 with F ishe rman’s se c tio n o f the turning F ishe rman’ s Channe l 40 Channe l and de e pe n Cut-2 fro m 44 to 52 fe e t basin to minimize ft; re duc e L ummus I sland to 50 fe e t se agrass impac ts; turning basin to a 1500 ft de e pe n fro m 42 to 50 dia.; de e pe n fro m 42 to fe e t 50 ft

Project Scope Request for Proposal – Approximately 5,000,000 CY of dredging • EPA designated offshore site • Rock material for artificial reef habitat • Borrow sites for seagrass mitigation – Estimate 4,000,000 CY of Rock – Confined Blasting will be Allowed – All Environmental Permits are in Place

Mitigation for Unavoidable Hardbottom Impacts Artificial Reef Creation – 9.28 acres • • Coral Relocation • All hard corals >25cm • Up to 1300 hard corals between 10 and 25 cm

Artificial Reef Mitigation Areas Reef Mitigation Sites have capacity of 40 acres OFFSHORE ARTIFICIAL REEF MITIGATION AREAS ADJACENT SUCCESSFUL ARTIFICIAL REEF MITIGATION SITE

Julia T uttle Se agr ass Mitigation Ar e a  Se agr ass Mitigation Site  L oc ation is pr e vious dr e dge mate r ial bor r ow site for c ause way c onstr uc tion (pr e 1925)  Sur r ounde d by he althy se agr asse s  T ur bidity Cur tains will sur r ound the r e stor ation site  R e stor ation of 16.6 ac r e s of se agr ass, 7.15 ac r e s to be plante d F ishe rman’ s Channe l

N EPA Designated Offshore Disposal Area Miami OFFSHORE DREDGED Miami Beach MATERIAL Miami Harbor, DISPOSAL SITE Port of Florida Miami Virginia Key Government Cut Legend EXISTING ARTIFICIAL Cape Florida REEF SITES

Construction Monitoring • Turbidity Monitoring • Sedimentation Monitoring • Secondary Impacts • Hardbottom and Corals • Seagrass Beds Natural Turbidity in the Bay Typical Sedimentation Station

Confined Blasting Overview

Confined vs Unconfined Blasts 7 pounds of explosives 3000 pounds of UNCONFI NED explosives (old school) CONFI NED (proposed)

Monitoring Zones Average Zone Configuration erage Zone Configuration for for Miami Harbor Miami Harbor Phase II Phase II Confined Blasti Confined Blasting ng R R = 260 (cube r = 260 (cube root W) W) R2 = Safety R2 = Safety Radiu dius W = W W = Weight ight of e of explosi plosives • Dange Danger Zone R r Zone Radiu dius = = 260 (lbs/delay) 260 (lbs/del ay) Ra Radius • Safety Z Zone Ra Radius = = Configurati Configur ation n 520 (lbs/del 520 (lbs/delay) ay) Fo Formula • Wa Watch Z Zone R Radius = 3[260 (lbs/de 3[260 (lbs /delay)]

Project Schedule • Summer 2012 Design and Permitting Compete • Fall 2012 Advertise • Winter 2013 Award Contract • Spring 2013 Commence Work • Spring 2015 Complete Work & OPEN for Deeper Draft Vessels!

Thank You For more information www.miamidade.gov/portofmiami www.saj.usace.army.mil