N.H. Admin. Code § Env-Dw 710.08

Current through Register No. 2, January 9, 2025

Section Env-Dw 710.08 - Reduced Monitoring for Radionuclides

(a) The monitoring frequency for radionuclides shall be based on the average of the results of the initial monitoring required pursuant to Env-Dw 710.06, as specified in Table 710-1 below:

Table 710-1: Monitoring Frequency Based on Radionuclide Concentrations

Compliance Gross Alpha (pCi/L)

Average Monitoring Result	Frequency
13.5 to 15	Yearly
7.6 to 13.4	Every 3 years
3 to 7.5	Every 6 years
less than 3	Every 9 years

Radium 226 plus Radium-228 (pCi/L)

Average Monitoring Result	Frequency
4.5 to 5	Yearly
2.6 to 4.4	Every 3 years
1.0 to 2.5	Every 6 years
less than 1.0	Every 9 years

Uranium (µg/L)

Average Monitoring Result	Frequency
26.5 to 30	Yearly
15.5 to 26.4	Every 3 years
1 to 15.4	Every 6 years
less than 1	Every 9 years

(b) Subsequent sample results shall be used to establish future sampling schedules using the frequencies in Table 710-1.

(c) Based on review of the submitted results, the department shall modify the system's schedule in accordance with Table 710-1 and notify the CWS O/O in writing of the new monitoring requirements.

N.H. Admin. Code § Env-Dw 710.08

(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.