• Dredging
  • Economic Development
  • Greenways
  • Stormwater
  • Urban Infill
COMMITTEE WORKING GROUP | ERIC BUERMANN, CHAIR
 Dredging

THE CLOSING CEREMONY for the last dredging scoop took place Oct. 15 at the mouth of the Miami River on the publicly accessible riverwalk trailhead on the north shore’s confluence with Biscayne Bay.

The effort took 36 years of vision, more than 10 years of hard work, $89 million in local, state and federal money, a 21/2-year temporary demobilization, discovery of buried World War II munitions, and the dedication, patience, persistence and creativity of hundreds of citizens, elected officials and stakeholders in the river.

The dredging and environmental cleanup project successfully restored the river’s federal navigable channel to its allotted 15-foot depth, which allows vessels to fill cargo to full capacity and traverse regardless of tides. In addition, larger megayachts and now able to access the river’s boatyards for service. Overall, the completed project has increased international trade, commerce and local employment, and has improved the natural environment of the Miami River, its tributaries and Biscayne Bay by removing the contaminated sediments that had accumulated on the river’s bottom following decades of neglect.

The Dredging Subcommittee is focused on completing the following goals:

• Seeking non-guaranteed reimbursements from the federal government for $21 million advanced in 2007-2008 by the Florida Legislature ($15 million); South Florida Water Management District ($3 million), and the Florida Inland Navigational District ($3 million).

Dredging Seybold Canal and Wagner Creek, contaminated with dioxins and other pollutants.

Finishing the Miami River Greenway
On the reimbursement, we are optimistic that at least $10 million in potential refunds – already approved by President Bush, the House and the Senate
before the election suspended the Conference Committee’s work – will come back to our state and local governments in 2009.

 

Dredging Benefits

1. The River has been environmentally restored and further degradation to Biscayne Bay has been prevented
2. The shipping industry has expanded as ships are now less dependent on high tide sailings and can traverse at most times of the day and night. An estimated $4 billion dollars of goodsare  now being transported via the river and the economy along the river has improved
3. The dredging project will be a catalyst for explosive economic development of under utilized properties along the river and in the adjacent neighborhoods.
4. Benefits to the State, County and City include: enhancement of the environmental quality of the River and downstream areas of Biscayne Bay, improvement of brownfields redevelopment programs, improvement of the "Eastward Ho" initiatives, expansion of commerce and international trade, and better utilization of empowerment zones.
5. Dredging or "cleaning" of the River has improved the live-ability  of River communities by enhancing riverwalks, greenways and parks for citizens and tourists.
6. Dredging has eliminated the classification of the river as a "cesspool" by the two Grand Jury reports and brought about a revitalization of this distressed urban waterfront area similar to other major cities like Baltimore, Jacksonville and Washington, D.C.
7. Dredging has increased jobs. The trade journal "Florida Shipper" notes that one small coastal freighter carrying 100 containers creates 77 jobs (indirect and direct) on shore. River dredging has allowed the average river freighter to increase their cargo capacity from 160 containers to 240 containers. In 1998 alone, over 4000 cargo vessels called on the Miami River.

Dredging FAQs

What types of polllutants are in the sediments?
Are all of the sediments polluted? The most common types of pollutants in Miami River sediments are heavy metals, such as lead, copper, zinc, cadmium, and mercury. These metals concentrations are ten to one hundred times above what would be expected for natural sediments. They also contain trace amounts of petroleum-related compounds and some types of pesticides. Contamination occurs throughout the navigable section of the River, however the highest concentrations are from Wagner Creek to the mouth of the River. Contaminants are associated primarily with the fine-grained silt and mud which has accumulated in the channel.
Is the sediment considered "hazardous waste"?
No. "Hazardous waste" is a designation under state and federal law pertaining to substances that could pose a significant threat to human health or the environment if the substance is disposed of, treated or handled improperly. Although the sediments are contaminated, they do not have high levels of pollutants or other properties that pose a significant threat to human health as defined by "hazardous waste".
Which pollutant causes the toxicity?
The concentrations of the metals, as well as the petroleum-based substances, exceed levels believed to cause biological effects. The toxicity is probably the combined result of several of the pollutant.

Mission Possible

MISSION POSSIBLE. The Barredor del Rio, a dredger specially buiot by Weston Solutions and Bean Environmental for the Miami River dredging project, digs the first scoop of sediment at the official launching of the Miami River dredging project Oct. 27, 2004

Estimated Dredging Budget
Appropriated vs. Needed Funds in millions

APPROPRIATED:
US Congress: $42.08 million
Florida Legislature: $17.64 million
FIND (Florida Inland Navigational District): $6.68 million
Miami-Dade County: $3.7 million
City of Miami: $2.9 million
SFWMD (South Florida Water Management District): $3 million
TOTAL SO FAR:  $76 million
NEEDED TO COMPLETE: $10 million*
* Figure is approximate. All dredging work so far has been on time and within budget.

 

C/O Robert King High1407 NW 7 Street, Suite D, Miami, FL 33125305-644-0544Fax: 305-642-1136Contact us email