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The Environmental Protection Agency (EPA) is reviewing the US Ecology’s request for a site-specific variance for a new Land Disposal Restrictions (LDR) treatment technology that stabilizes elemental mercury extracted from high-level mercury-containing wastes through a process of conversion to mercuric sulfide followed by double encapsulation and monofil disposal. Upon completion of its review, the EPA provides public notice in the Federal Register of the intent to approve or deny a petition and provide for public comment. If approved, EPA would propose revisions to the regulations. Due to the Mercury Export Ban Act (MEBA) and, subsequently, section 10 of the Lautenberg Act, the LDR treatment standard for high level mercury-containing wastes no longer reliably results in returning recovered mercury to the marketplace. The treatment technology described in the variance request would offer a permanent disposal solution for the expanding stores of elemental mercury wastes across the U.S.