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1.
Federal Register. Proposed Rules. Proposed rule. RIN 2040-AF26. Wednesday, October 22, 2014.
...EPA is proposing technology-based pretreatment standards under the Clean Water Act (CWA) for discharges of pollutants into publicly owned treatment works (POTWs) from existing and new dental practices that discharge dental amalgam. Dental amalgam contains mercury in a highly concentrated form that is relatively easy to collect and recycle. Dental offices are the main source of mercury discharges to POTWs. Mercury is a persistent and bioaccumulative pollutant in the environment with well-documented neurotoxic effects on humans. Mercury pollution is widespread and comes from many diverse sources such as air deposition from municipal and industrial incinerators and combustion of fossil fuels. Mercury easily becomes diffuse in the environment and mercury pollution is a global problem. Removing mercury from the waste stream when it is in a concentrated and easy to handle form like in waste dental amalgam is an important and commonsense step to take to prevent that mercury from being released back into the environment where it can become diffuse and a hazard to humans. The proposal would require dental practices to comply with requirements for controlling the discharge of mercury and other metals in dental amalgam into POTWs based on the best available technology or best available demonstrated control technology. Specifically, the requirements would be based on the use of amalgam separators and best management practices (BMPs). Amalgam separators are a practical, affordable and readily available technology for capturing mercury and other metals before they are discharged into sewers and POTWs. EPA is also proposing to amend selected parts of the General Pretreatment Regulations to streamline oversight requirements for the dental sector. EPA expects compliance with this proposed rule would reduce the discharge of metals to POTWs by at least 8.8 tons per year, about half of which is mercury. EPA estimates the annual cost of the proposed rule would be $44 to $49 million. More Information
2.
Federal Register. Rules and Regulations. RIN 2040-AF26. Monday, June 26, 2017.
... ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 441 [EPA-HQ-OW-2014-0693; FRL-9957-10-OW] RIN 2040-AF26 Effluent Limitations Guidelines and Standards for the Dental Category Correction In rule document 2017-12338, beginning on page 27154, in the issue of Wednesday, June 14, 2017, make the following correction: Sec. 441.20 General definitions ... More Information
3.
Federal Register. Rules and Regulations. Final rule. RIN 2040-AF26. Wednesday, June 14, 2017.
...The Environmental Protection Agency (EPA) is promulgating technology-based pretreatment standards under the Clean Water Act to reduce discharges of mercury from dental offices into municipal sewage treatment plants known as publicly owned treatment works (POTWs). This final rule requires dental offices to use amalgam separators and two best management practices recommended by the American Dental Association (ADA). This final rule includes a provision to significantly reduce and streamline the oversight and reporting requirements in EPA's General Pretreatment Regulations that would otherwise apply as a result of this rulemaking. EPA expects compliance with this final rule will annually reduce the discharge of mercury by 5.1 tons as well as 5.3 tons of other metals found in waste dental amalgam to POTWs. More Information
4.
Federal Register. Rules and Regulations. RIN 2040-AF26. Wednesday, July 5, 2017.
... ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 441 [EPA-HQ-OW-2014-0693; FRL-9957-10-OW] RIN 2040-AF26 Effluent Limitations Guidelines and Standards for the Dental Category Correction In rule document C1-2017-12338, beginning on page 28777, in the issue of Monday, June 26, 2017 make the following corrections: Sec. 441.30 Pretreatment standards for... More Information
5.
Federal Register. Proposed Rules. Proposed rule; extension of comment period. RIN 2040-AF26. Friday, December 19, 2014.
...EPA received requests for an extension of the period for providing comments on the proposed rule entitled, ``Effluent Limitations Guidelines and Standards for the Dental Category,'' published in the Federal Register on October 22, 2014. EPA is extending the comment period from December 22, 2014 to February 20, 2015. More Information

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