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USACE, MMRP, Removal Action, Former Fort Glenn

Client: USACE Alaska

Location: Umnak, AK

Scope of Work:

  • Munitions
  • Removal Action

Brice completed a surface removal and focused subsurface removal of munitions of explosive concern (MEC) and munition debris (MD) at the former Fort Glenn open burn/open detonation (OB/OD) area. We performed the surface removal over the entire 337 acres, along with a focused subsurface removal to the depth of detection over ~15 acres, and implementation of administrative and institutional LUCs to increase awareness of potential risks. This achieved the Remedial Action Objective (RAO) of reducing the potential for direct contact with MEC by human receptors, considering the current and future land use.

The first intrusive removals were completed by two 7-person dig teams. DGM data collection at both focus areas was also completed, and all geophysical data was processed and dig lists generated. Any areas inaccessible to the EM61 underwent removal using an analog mag-and-dig approach. All recovered items underwent an explosive hazard (MPPEH) inspection process to determine if it was material documented as safe (MDAS) or MEC. If acceptable and safe to move, MEC was stored until a consolidated demolition was conducted. If the item was determined unacceptable to move, it was blown in place (BIP). The material left from demolition was re-inspected, and operations were performed until all items were confirmed to be MDAS. MPPEH underwent a 100% inspection and a 100% re-inspection to determine that it was safe from an explosives perspective. MPPEH was segregated from other waste and stored in sealed and locked containers to maintain a chain of custody from discovery to final disposal. Brice developed and implemented a Land Use Control Plan that included four heavy-duty, wind-resistant warning signs to inform visitors of the presence of MEC.

In 2020, Brice partially demobilized with an anticipated return in 2021 to complete the work using a robotic excavator.

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