The Department of Environmental Services proposed to amend Env-Wq 306, Management of Mercury Containing Amalgam. The rules, which implement a state law that requires the use of environmentally appropriate equipment and methods to dispose of mercury in dental amalgam waste, are set to expire May 28, 2013. Amendments would readopt the rules. There will be a public hearing April 22, 2013, and the deadline for comments is April 29. See http://www.gencourt.state.nh.us/rules/register/2013/march-14-13.pdf (pp. 1-2).