Section Env-Dw 717.04 - Compliance Dates; Monitoring Requirements(a) Subject to (b), below, no later than the compliance deadline, the O/O of a groundwater system where chlorine is added for disinfection or other water treatment purposes, or where the water is disinfected using ultraviolet radiation, ozonation, or any other chemical or non-chemical technique, shall: (1) Demonstrate that: a. The disinfection process being used meets 4-log treatment, as demonstrated in accordance with Env-Dw 717.13(a) and (b); orb. Investigative monitoring has been conducted as specified in Env-Dw 717.09(b) and shows that the source water is free from fecal contamination; or(2) Affirm in writing to the department that the O/O will undertake monitoring as specified in Env-Dw 717.09(c)(2).(b) The O/O of a groundwater system that provides disinfection shall not be required to conduct investigative monitoring under (a)(1)b. or (a)(2), above, if:(1) The disinfection process was installed after January 1, 2006; and(2) The O/O demonstrates that all bacteria sampling required under Env-Dw 709 has been free of any coliform for at least 3 years prior to the date of installation of the disinfection process.(c) If the O/O of a groundwater system is a political subdivision that does not vote to fund investigative monitoring, the department shall not require investigative monitoring to be done unless the state pays the costs of such monitoring.(d) The O/O of a groundwater system where the water is disinfected who fails to make the demonstration required by (a)(1), above, who is not exempt from investigative monitoring under (b), above, shall undertake monitoring in accordance with Env-Dw 717.09(c)(2).(e) After the compliance deadline, the O/O of a groundwater system where 4-log treatment is provided shall conduct compliance monitoring in accordance with Env-Dw 717.13 through Env-Dw 717.17.(f) After the compliance deadline, the O/O of a groundwater system where 4-log treatment is not provided shall conduct triggered monitoring as described in Env-Dw 717.11.N.H. Admin. Code § Env-Dw 717.04
Amended by Volume XXXVIII Number 23, Filed June 7, 2018, Proposed by #12525, Effective 6/1/2018, Expires 6/1/2028.