Current Activities
Site-Wide Remedy
Design and construction of the site-wide remedy as described in the Record of Decision issued by the U.S. Environmental Protection Agency (USEPA) is underway.
- Construction of the bedrock and overburden groundwater containment, extraction, treatment, and reinjection system, a major component of the site-wide remedy, is complete and the system is fully operational. Periodic maintenance and facility upgrades will be performed as needed.
- WH is implementing the site-wide soils remediation program in a phased approach. Remediation of Impoundments 13 and 24 was completed in 2024.
Impoundments 1 and 2
WH is working with the USEPA under an Administrative Order on Consent for remedial design and engineering and a Consent Decree for remedial action implementation for Operable Unit 8 (OU8), commonly referred to as Impoundments 1 and 2.
- Remedy demonstration trials were successfully performed in 2020, 2021, 2022, 2023, and early 2024 providing important information on the process and procedures incorporated into the remedial design.
- On September 24, 2024, USEPA approved the Remedial Design Report for the removal of acid tar materials from Impoundments 1 and 2 and on September 25, 2024, USEPA approved the Remedial Action Work Plan. These are two significant milestones allowing the project to officially transition from Remedial Design into Remedial Action. Material removal activities resumed in October 2024 and will continue seasonally (April-Dec) for several years.