Section Env-Dw 712.16 - Monitoring for Endrin(a) The O/O of a CWS or NTNC shall conduct monitoring for the pesticide endrin for purposes of determining compliance with the MCL in accordance with this section.(b) The O/O shall collect samples to be analyzed for endrin if endrin has been used: (1) In the watershed of the surface water, for a system using surface water alone or in combination with groundwater; or(2) Within the recharge area of the system's well or wells, for a system using only groundwater.(c) Samples shall be taken and analyzed during June through September, when contamination by pesticides is most likely to occur, at the intervals specified in the sampling schedule established pursuant to Env-Dw 708.01, which shall be no less frequently than at 3-year intervals.(d) If the level of endrin exceeds the MCL, the O/O shall:(1) Report the exceedance to the department within 7 days; and(2) Conduct 3 additional analyses within one month.(e) If the average of the original result and the 3 results obtained pursuant to (d), above, rounded to the same number of significant figures as the MCL, exceeds the MCL, the O/O shall:(1) Report to the department pursuant to Env-Dw 719; and(2) Give notice to the public pursuant to Env-Dw 800.(f) After giving public notification pursuant to (e)(2), above, the O/O shall continue to monitor for endrin until the MCL has not been exceeded in 2 successive samples or until a monitoring schedule as a condition to a variance, exemption, or enforcement action becomes effective.N.H. Code Admin. R. Env-Dw 712.16
(See Revision Note #1 at chapter heading for Env-Dw 700) #9700, eff 5-1-10
Amended by Volume XXXVIII Number 50, Filed December 13, 2018, Proposed by #12668, Effective 1/1/2019, Expires 1/1/2029.