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Onondaga Lake Sediment Management Final Design- September 2011

Introduction

The Onondaga Lake Sediment Management Final Design (dated September 2011), including comments and responses to those comments, has been submitted by Honeywell and reviewed by the New York State Department of Environmental Conservation (NYSDEC) and the United States Environmental Protection Agency (EPA). This document provides design information on the management of sediments to be dredged as part of the Onondaga Lake remedy.

Sediment Management Intermediate Design Submittal for the Onondaga Lake Bottom Site

The Onondaga Lake remediation plan was separated into four designs in order to advance critical design components so that dredging activities can begin as scheduled in May 2012.

This design document describes how the dredged lake-bottom sediments will be pumped through a double-walled pipe up to the Sediment Consolidation Area (SCA) located on Wastebed 13, how the sediments will be managed within the SCA, and how water that drains from the sediments will be collected and transported to the SCA Water Treatment Plant. Comprehensive efforts to protect the public's health and safety are an important part of the work to restore Onondaga Lake. Health and safety plans are reviewed by the NYSDEC and the New York State Department of Health and are incorporated in to every stage of the restoration.

The design team will continue to work with the community to ensure that the health and safety of the surrounding community and environment is maintained throughout the remedy. A dredging and SCA operations health and safety plan has been completed and includes:

Site Security & Community Health and Safety Plan
Air Quality Monitoring and Mitigation Plan
Spill Contingency Plan

Components of the Onondaga Lake remedy that are discussed in the Sediment Management Final Design include:

  • Transport of sediments in a slurry (sediment/water mixture) from the shoreline through a double-walled pipe to the Sediment Consolidation Area (SCA)
  • Pre-processing of the sediment slurry prior to being pumped into the geotextile tubes (e.g., screen of larger material, sand separation, addition of polymer to aid in the dewatering of the sediment slurry within the geotextile tubes)
  • Use of geotextile tubes for dewatering of sediment slurry
  • Management of stormwater and water draining from geotextile tubes
  • Management of debris removed from the lake to facilitate dredging and capping
  • Traffic Management Plan
  • Noise Abatement Plan

Water draining from the geotextile tubes will be collected and pumped to the Sediment Consolidation Area Water Treatment Plant that will also be located in close proximity to the SCA. Dredging debris management will consist of recycling, placing the debris within the SCA, or disposing the material off-site depending on the nature of the debris.

Onondaga Lake Sediment Management Final Design (PDF)- (219 pages, 3.5 mB)

Note: Appendices A, C, D, E, F, and G, are not provided on this web page at this time, but can be reviewed at the document repositories. Repositories are listed below.

Atlantic States Legal Foundation
658 West Onondaga Street
Syracuse, NY 13204
Phone: (315) 475-1170
Please call for an appointment.

Camillus Town Hall
4600 West Genesee Street
Room 100
Syracuse, NY 13219
Phone: (315) 488-1234

Liverpool Public Library
310 Tulip Street
Liverpool, NY 13088
Phone: (315) 457-0310

Moon Library
SUNY ESF
1 Forestry Drive
Syracuse, NY 13210
Phone: (315) 470-6712

NYSDEC
625 Broadway
Albany, NY 12233-7016
Phone: (518) 402-9676
Please call for an appointment.

NYSDEC, Region 7
615 Erie Blvd. West
Syracuse, NY 13204-2400
Phone: (315) 426-7400
Please call for an appointment.

Onondaga County Public Library - Central Library at the Galleries
447 South Salina Street
Syracuse, NY 13202
Phone: (315) 435-1800

Solvay Public Library
615 Woods Road
Solvay, NY 13209
Phone: (315) 468-2441


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    Albany, NY 12223
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