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Draft Onondaga Lake Dredging, Sediment Management and Water Treatment Initial Design Submittal

Fact Sheet and Draft Plan

Draft Onondaga Lake Dredging, Sediment Management & Water Treatment Initial Design Submittal Available for Review

Onondaga Lake Bottom Site (#7-34-030) Onondaga County - May 2009 Introduction

The draft Onondaga Lake Dredging, Sediment Management and Water Treatment Initial Design Submittal (IDS) report has been prepared by Honeywell International Inc., in accordance with the Remedial Design Work Plan (RDWP) which was approved in March 2009, and has been reviewed by NYSDEC and EPA. The purpose of this IDS report is to present initial-design information on the Onondaga Lake remedy including the dredging, transportation, and dewatering of sediments from the lake, and treatment of construction water generated during the process. Furthermore, this IDS report is a first step in the design process that allows the public an opportunity to review information associated with the initial stages of the remedial design and provide feedback prior to the finalization of the remedial design. Along with the draft IDS report, the NYSDEC and USEPA are also releasing the regulatory agencies' comments (13 page PDF, 55 Kb) that were generated as a result of their review of the draft IDS report.

Dredging, Sediment Management & Water Treatment IDS

As detailed in the RDWP, the remedial design includes the preparation of four IDS reports:

  • Dredging, Sediment Management and Water Treatment IDS;
  • Sediment Cap and Dredge Volume IDS;
  • Sediment Consolidation Area (SCA) Civil and Geotechnical IDS; and
  • Thin-Layer Capping, Nitrate Addition/Oxygenation, and Monitored Natural Recovery (Sediment Management Unit 8) IDS.

Separating the design into four submittals allows some activities to proceed faster (e.g., SCA and water treatment) in order to meet the schedule for starting the remedial action consistent with the Consent Decree.

The Dredging, Sediment Management and Water Treatment IDS report includes the conceptual design of how the sediments will be dredged, transported and dewatered as part of the remedial activities. It also addresses the treatment of dredge water generated as part of this process

Certain critical elements of the operations discussed in the IDS include:

  • utilizing a hydraulic dredge;
  • transporting sediment to the SCA via a pipeline along the Ninemile Creek corridor; and
  • dewatering sediment using geotextile tubes.

This is the first of the IDS reports to be submitted; therefore several critical details pertaining to topics which are inherently associated with another IDS report may not be fully developed. For example, the establishment of final dredging volumes, including areas and depths, will be developed as part of the Sediment Cap and Dredge Volume IDS. This first IDS report is organized into seven sections and nine appendices. The seven sections include:

  1. Site description and design process overview
  2. Community protection and general project requirements
  3. In-lake site characterization
  4. Engineering analysis and design
  5. Subcontracting strategy
  6. Design submittal and construction schedule
  7. References

As stated previously, the NYSDEC and EPA have reviewed the IDS and have generated numerous comments based on their review of the document. These comments will be responded to in a letter from Honeywell and will be addressed in future design submittals.

Future Design Submittals and Next Steps

The sequencing of events and interrelations of design and construction activities to assure the process is efficient and completed on schedule is critical to the success of the lake remedy. Section 6 of this IDS report outlines the schedule milestones established to accomplish the remedy consistent with the Consent Decree. This schedule of milestones, and its relationship with other aspects of the remedial design, is still under review by NYSDEC and EPA. The other three IDS reports will discuss future design submittals associated with the respective IDS report.

Location of Reports and Information

The Onondaga Lake Dredging, Sediment Management & Water Treatment Initial Design Submittal is available for review at all of the locations listed below. Furthermore, the complete Administrative Record file, which contains information including the Consent Decree, Record of Decision, Statement of Work, Explanation of Significant Differences, SCA siting, Remedial Investigation/Feasibility Study, Human Health Risk Assessment, and the Baseline Ecological Risk Assessment, is available at the asterisked locations listed below. The other listed locations contain key documents, but do not contain the entire administrative record.

Atlantic States Legal Foundation*
658 West Onondaga Street
Syracuse, NY 13204
Phone: (315) 475-1170
Please call for hours of availability

Liverpool Public Library
310 Tulip Street
Liverpool, NY 13088
Phone: (315) 457-0310
Hours: M - Th, 9:00 a.m.- 9:00 p.m.;
Fri, 9:00 a.m. - 6:00 p.m.;
Sat, 10:00 a.m. - 5:00 p.m.;
Sun, 12:00 p.m. - 5:00 p.m.

NYSDEC, Region 7*
615 Erie Blvd. West
Syracuse, NY 13204-2400
Phone: (315) 426-7400
Hours: M - Fri, 8:30 a.m. - 4:45 p.m.
Please call for an appointment

Onondaga County Public Library
Syracuse Branch at the Galleries
447 South Salina Street
Syracuse, NY 13202
Phone: (315) 435-1800
Hours: M, Th, Fri, Sat, 9:00 a.m. - 5:00 p.m.;
Tu, W, 9:00 a.m. - 8:30 p.m.

Moon Library
SUNY ESF
1 Forestry Drive
Syracuse, NY 13210
Phone: (315) 470-6712
Hours: check www.esf.edu/moonlib/

Camillus Town Hall
4600 West Genesee Street, Room 100
Syracuse, NY 13219
Phone: (315) 488-1234
Hours: M-Fri, 8:30 a.m. - 4:30 p.m.

NYSDEC*
625 Broadway
Albany, NY 12233-7016
Phone: (518) 402-9676
Hours: M - Fri, 8:30 a.m. - 4:45 p.m.
Please call for an appointment

This fact sheet provides you with information on the draft Dredging, Sediment Management & Water Treatment Initial Design Submittal for the Onondaga Lake Bottom Site, a sub site of the Onondaga Lake Superfund Site. If you have any questions or comments about this project, please contact:

Mr. Timothy Larson, P.E.
Project Manager
625 Broadway, 12th Floor
Albany, New York 12233-7013
(518) 402-9676
Email to Timothy Larson, P.E.

With respect to Citizen Participation inquiries, please contact:

Ms. Diane Carlton or
Ms. Stephanie Harrington
Citizen Participation Specialists
615 Erie Boulevard West
Syracuse, New York 13204-2400
(315) 426-7403
Email: Info.R7@dec.ny.gov

For site-related health questions, contact the New York State Department of Health (NYSDOH) at the following:

Mr. Mark Sergott
Project Manager
547 River Street
Troy, New York 12180-2216
(800) 458-1158, Ext. 27860
E-mail: beei@health.state.ny.us

Draft Onondaga Lake Dredging, Sediment Management and Water Treatment Initial Design Submittal Plan


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