2026-19637NoticeWallet

ExxonMobil Ditches Slow Barrier for Liquid Superfund Cleanup Fix

Published Date: 9/25/2026

Notice

Summary

Exxon Mobil is switching up how they clean up groundwater pollution at a Superfund site in West Virginia. Instead of a slow, maintenance-heavy barrier, they'll use a faster, more effective liquid treatment. This change, approved by EPA in 2026, updates the original 2019 cleanup plan and invites the public to comment before it’s finalized.

Analyzed Economic Effects

1 provisions identified: 1 benefits, 0 costs, 0 mixed.

Groundwater cleanup changed to liquid treatment

Exxon Mobil will use Liquid Alkaline Injection instead of a permeable reactive barrier to clean groundwater at the Sharon Steel/Fairmont Coke Works Superfund Site. The Record of Decision (ROD) for the Site (original ROD dated December 19, 2017) was amended by EPA in 2026, and the Department of Justice lodged a proposed modification to the 2019 consent decree on September 22, 2026 to require the new treatment. The notice says Liquid Alkaline Injection can remediate contaminated groundwater more quickly and more effectively than the reactive barrier, and that the reactive barrier would have required perpetual maintenance.

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Key Dates

Published Date
9/25/2026

Department and Agencies

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