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Wastebeds 1-8 Integrated IRM Comments Letter and Work Plan -August 2011

A work plan for the Wastebeds 1-8 Site has been prepared in accordance with the requirements of the Administrative Consent Order entered into by Honeywell International, Inc. (Honeywell), and the New York State Department of Environmental Conservation (NYSDEC) dated January 22, 2004. The objective of this IRM is to mitigate the discharge of contaminants in groundwater and seeps to Onondaga Lake and Ninemile Creek, and erosion of exposed Solvay waste from the Site to Onondaga Lake. In addition to the remedial elements of the IRM, mitigation wetlands and a hydraulic control system adjacent to Onondaga Lake Remediation Area A will be designed and constructed. The objective of the mitigation wetlands is to compensate for the loss of wetland functions and values from locations on and off site by providing a diverse wetland complex comprising aquatic habitat connected to Onondaga Lake as well as inland wetlands. The objective for the hydraulic control of groundwater adjacent to Remediation Area A is to reduce groundwater upwelling velocities that may impact the cap to be placed in Remediation Area A area in Onondaga Lake. Collectively referred to as the Integrated IRM, these measures will address contaminant discharge and groundwater upwelling from the Site to Onondaga Lake and Nine Mile Creek, mitigate erosion of exposed Solvay waste, and enhance the habitat along the Onondaga Lake shoreline.

This document describes the project overview, deliverables, and schedule associated with the design of the Integrated IRM. Background information is presented in Section 1 of this Work Plan. The project overview and description of the key elements of the design are described in Section 2. Section 3 presents the submittals that will be provided to document the design as it progresses. Regulatory and permit requirements, project organization, reporting, and schedule considerations are provided in sections 4, 5, 6, and 7, respectively.

Wastebeds 1-8 Integrated IRM Comments Letter and Work Plan- August 2011

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