Section Env-Wq 306.04 - Amalgam Separator(a) Before any dental practice discharges wastewater containing mercury-containing amalgam residues into a sewer system or to a subsurface disposal system, the owner of the practice shall ensure that such wastewaters are treated by an amalgam separator that: (1) Subject to (d), below, is certified by the manufacturer as meeting International Organization for Standardization (ISO) 11143:2008(E) standards; and (2) Is designed and constructed for the expected volume and flow rate of discharge from the dental practice it serves. (b) The owner of the practice shall ensure that the amalgam separator is installed, operated, and maintained at the dental practice in accordance with the manufacturer's requirements.(c) Waste amalgam collected by an amalgam separator or by any other filter, trap, or other method shall be managed as hazardous wastes in accordance with the hazardous waste rules. (d) A dental practice that was in operation prior to the 2013 effective date of this part that uses an amalgam separator installed pursuant to Env-Ws 905 which meets the ISO 11143:1999(E) standards may continue to use that separator until such time as the separator is replaced, at which time a separator that meets the 2008 standard shall be installed. (e) For purposes of (d), above, replacement of a collection container or other part, such as a filter, that is considered routine maintenance shall not require replacement of the entire system. (f) Notwithstanding (d) above, when a federal requirement relative to standards for mercury amalgam separators that is more stringent than the 1999 standard becomes effective, which currently is scheduled to occur on June 14, 2027 under 40 CFR 441.30(a)(1)(iii), a separator that meets the federal standard shall be installed. N.H. Code Admin. R. Env-Wq 306.04
(See Revision Note at part heading for Env-Wq 306) #10346, eff 5-22-13
Amended by Volume XLI Number 49, Filed December 9, 2021, Proposed by #13287, Effective 12/1/2021, Expires 12/1/2031