Client: USACE Alaska
Location: Umnak, AK
Completion Year: 2021
Scope of Work:
- Engineering Evaluation and Cost Analysis
Brice completed an engineering evaluation/cost analysis (EE/CA) process for four projects within the Fort Glenn Formerly Used Defense Sites (FUDS) on Umnak Island, Alaska. The goal of each EE/CA was to determine a removal action alternative to address known contamination at the Fort Glenn FUDS property. Sampling to date indicated that unacceptable risk exists; however, there are limited receptors at the site, allowing for planning of more than 6 months and indicating that a non-time-critical removal action (NTCRA) is appropriate for the site.
The NTCRA for the site is intended as one of a series of response actions, since a completed remedial investigation (RI) is available, the nature and extent of contamination and the risk presented by the site have been determined, and additional remedial action in the future may be warranted after the removal action described in the EE/CA documents has been conducted. Each EE/CA focused on the analysis of appropriate alternatives and provide reference to existing information on the nature and extent of contamination and risks for each of the four projects.
We developed specific objectives for each EE/CA document. In general, the intent of the removal actions are to protect human health by removing source soils associated with site features for each project. The primary objective will be to remove contaminants that exceed the EPA RSLs (and other identified ARARs as applicable), while protecting and documenting archaeological and historic resources on the island. A qualified archaeologist performed the EE/CA cultural resources evaluation. For each of the proposed actions and alternatives presented in the EE/CA documents, the archaeologist performed a cultural resource impacts analysis and recommended measures and cost to avoid, minimize, or mitigate potential adverse effects.
Brice will produce three separate, stand-alone EE/CA documents. Each will have the following sections: Executive Summary, Site Characterization, Conceptual Site Models, Cultural Resource Evaluation, Identification of Removal Action Objectives, Identification and Analysis of Removal Action Alternatives, Comparative Analysis of Removal Action Alternatives, Recommended Removal Action Alternative.
EE/CA documents generated will be available as part of the Administrative Record prior to the public notice of availability and will be available during the entire public review and comment period in the first half of 2021. The public will have a full 30 days to provide comments on each EE/CA document, during which time public meetings will be held to explain the contents of each of the EE/CA documents. A total of two virtual public meetings will be held. Comments received during the public review period will be addressed in a Responsiveness Summary that will be included in each Final EE/CA report.
Following development of each Final EE/CA report, an Action Memorandum will be prepared to document the preferred alternative and intended NTCRA approach. Subsequent work after this contract ends will then implement that approach.