Section Env-Dw 717.18 - Compliance Monitoring Reporting Requirements(a) The O/O of a groundwater system that provides 4-log treatment of viruses using inactivation, removal, or a department-approved combination of 4-log virus inactivation and removal shall report the information specified in (c) through (e), below, as applicable, monthly to the department by the 10th day of the month immediately following the month for which the report is being provided.(b) The O/O of a groundwater system that provides 4-log treatment shall notify the department as soon as possible, but in no case later than the end of the next business day, any time the system fails to meet any of the requirements established for the system for greater than 4 hours, including, but not limited to, minimum residual disinfectant concentration, membrane operating criteria or membrane integrity, and alternative treatment operating criteria.(c) The O/O of a groundwater system that provides 4-log treatment using chlorine disinfection shall report the following information: (1) For each day, the lowest measured residual disinfectant concentration, in milligrams per liter (mg/L), in water entering the distribution system;(2) The daily residual disinfectant concentration, in mg/L, in water measured at the approved sampling location at or before the first service connection;(3) The disinfectant contact time (CT), in minutes, associated with the calculated peak flow rate for the system used for calculating the CT value;(4) The daily measurement of pH of disinfected water following the point of chlorine disinfection;(5) The daily measurement of water temperature, in degrees Celsius, following each point of disinfection;(6) The daily CT value calculated for each treatment plant before or at the first customer; and(7) The daily determination of whether disinfection achieves at least 4-log treatment.(d) The O/O of a groundwater system that provides 4-log treatment using membrane filtration shall report the information specified in the department's approval of the alternative treatment in accordance with Env-Dw 717.16.(e) The O/O of a groundwater system that provides 4-log treatment using alternative treatment shall report the information specified in the department's approval of the alternative treatment in accordance with Env-Dw 717.17.N.H. Admin. Code § Env-Dw 717.18
Amended by Volume XXXVIII Number 23, Filed June 7, 2018, Proposed by #12525, Effective 6/1/2018, Expires 6/1/2028.