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Florida Lake Management Society Annual Conference, Naples, Florida, June 4 – 7, 2007

Results and Conclusions

Results from the successful completion of the multi-year Lake Maggiore restoration project will be presented. During the project a total of approximately 500,000 dry tons of sediment (over 60,000 truck loads) were hydraulically removed from the lake, separated into sand and fine fractions by screening and hydrocycloning, thickened and dewatered using belt filter press technology to produce dry stackable materials ready for hauling off site to a distant disposal area. Return water was monitored and shown to be non-toxic, clear / non-turbid, and meeting background water quality. The conclusions support that hydraulic dredging integrated with mechanical sediment dewatering to be a technically, environmentally safe, and economically feasible approach to lake sediment removal, particularly in an urban setting where area development precludes traditional sediment disposal techniques, and open land for sediment processing is limited.

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NOTES

Session 8A – Page 5

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