The hydrological situation is changing. Are you considering remediation strategies with respect to sea-level rise, which could affect groundwater on the site?

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Evergreen will detail its approach to remediation of the facility in future Cleanup Plans and will consider climate changes predicted to occur within the anticipated timeframe to completion. Evergreen will also incorporate climate change into future modeling. Response addresses the similar questions: "Are you considering your remediation strategies with respect to sea level rise, which could affect groundwater and... read more

Can you please go over your plan to clean up lead and other toxic contaminants at the site? And your plan to provide a sufficient analysis of and a plan for effectively and safely cleaning up contaminants in the deep aquifer below the site. I urge you to use the strictest possible health-based standard to clean up toxics in both of these and all other cases.

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All plans for cleaning up contamination in both soil and groundwater will be included in the Act 2 Cleanup... read more

How long will this take and when will the cleanup start?

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Evergreen’s cleanup, when talking about subsurface remediation (extraction of petroleum and impacted groundwater from the subsurface), has been ongoing for quite some time and is expected to continue for several years until removal of petroleum and impacted groundwater is no longer necessary). The need for any additional remediation systems to address pre-2012 impacts will be detailed in future Act 2 Cleanup... read more

It seems like many of the RIRs are still pending despite Hilco’s plans to start construction in 2021. 1) What AOIs are planned to be clear to build in 2021 and 2) what are the states of their RIR and Remedial Action Reports such that building can occur so soon. 3)If they are starting in the North, AOI 8 has an identified benzene plume that exceeds the site boundary to the north. There is a sample point in the lower aquifer on the boundary that is outside of the active and inactive remediation boundaries. What are the remediation activities that need to be done prior to construction to address these needs?

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Hilco Redevelopment Partners’ construction schedule is not dependent on completion of Evergreen’s remediation activities.  Operation of Evergreen’s remediation systems in the North Yard (AOI 8) and in other areas of the site will continue during and after Hilco Redevelopment Partners’ decommissioning, demolition, and redevelopment activities. Hilco Redevelopment Partners and Evergreen have been and will... read more

In today’s presentation, the presenter described the topic of “source removal” as a remediation approach, summarizing it as “get rid of it.” It is understood that this is a plain-word explanation for a more involved process. What percentage of this project is proposed to be source removal, and where is the material to be removed going? What is the line of custody for such removal, at what stage are the applicable permits? Are the byproducts of such processes contaminants themselves, and does the proposal comply with regulations and standards for such byproducts?

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These are all questions that are generally addressed in a Cleanup Plan.  The Cleanup Plan(s) will be submitted subsequent to Remedial Investigation... read more

When will we get information comparing all the available remediation methods in terms of cost, effectiveness, and community impacts (such as air emissions from the remediation process itself)?

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Evaluation of current and potential remedial options is ongoing.  Cleanup Plans will be submitted upon completion of all Remedial Investigation activities, which will consist of identification and evaluation of remedial alternatives, selection of proposed remedies, and plans for the development, construction, and initial operation of the proposed remedy and/or documentation of interim remedial actions already in... read more

Does the remediation process create an odor or smell? What kind? Will it be all the time, or at certain times?

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Emissions from Evergreen’s systems are all treated in some fashion.  Groundwater and LNAPL pumping systems are closed loop systems from which vapors are extracted from the system components themselves (no vapors are extracted from the subsurface) and are treated with either granular activated carbon or catalytic oxidation.  The sewer vapor extraction systems both use biofilter beds to treat air that is removed... read more