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News on the Onondaga Lake cleanup

— Periodically, I receive updates from Honeywell on the lake clean-up effort. Below is a recent article from Honeywell’s newsletter that discusses some of the work that will take place this summer. I will do my best to pass along information to keep the public as up-to-date as possible. If you would like to receive current project updates from Honeywell, sign up for their E-Newsletter at lakecleanup.com/newsletters/.

Hydraulic dredge arrives in Syracuse in preparation for lake cleanup operations

As preparations continue for Onondaga Lake dredging and capping, another milestone is being reached this week with the arrival of the large hydraulic dredge that will remove material from the lake bottom. The dredge will be assembled over the next several weeks. Deliveries of additional barges, watercraft, office trailers, smaller dredges, and equipment also began this week and will continue in the coming weeks.

Dredging will be conducted from barges on the lake. The dredged material will be transported via a double-walled pipe through non-residential areas to the lined consolidation area in Camillus where it will be pumped into geotextile tubes for drying and safe, long-term isolation. The “closed system” will prevent lake material from being exposed to the open environment. The dredge has state-of-the-art electronic systems, including a global positioning system (GPS), computerized tracking software, and automated control system, as well as a 16-inch pump. Once assembled, the dredge, which measures nearly 40 feet by 104 feet, will be launched. The complete system — including the dredge, pipeline, processing equipment, and water treatment plant — will then be tested. Later this summer, water will be used to test the system before the lake material is introduced. A limited amount of material will be processed initially before increasing operations to full capacity.

At the consolidation area, the lake material will be separated from the water using geotextile tubes. The water will be collected and treated to meet New York State Department of Environmental Conservation (DEC) standards. A high-strength liner has been placed on a clay layer at the bottom of the consolidation area. Once the lake cleanup is complete, an additional high-strength liner will be placed above the geotextile tubes. Above this liner, layers of clean soil will be added and vegetation will be planted. During dredging operations, B20 biodiesel fuel will be used instead of standard diesel fuel. In addition, during the Onondaga Lake cleanup, green electric booster pumps and hydraulic dredging will help reduce greenhouse gas (GHG) emissions by the equivalent of removing 12,700 cars from the highway for one year.

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