Section Env-Dw 303.15 - Source Evaluation for Sources Using External Force For any source where external force will be used to collect water, the source evaluation shall be conducted in accordance with the pumping test requirements for large community water system wells specified in Env-Dw 302, except as altered by the following:
(a) For a spring water source or artesian water source, the following shall apply: (1) The source evaluation shall address both the natural high flow conditions and the natural low flow conditions of the source; and(2) Low flow conditions shall be: a. Evaluated by conducting the source evaluation during a low flow period; orb. Predicted using hydrogeologically-valid methods provided that a monitoring program is designed and implemented to evaluate the potential for adverse impacts as described in RSA 485-C:21, V-c; (b) For a spring where a borehole will be used to collect water, the source evaluation shall include the measurement of flows from the spring's natural orifice at least as often as water levels are measured in the borehole, after the first 10 minutes of initiating and concluding pumping; and(c) Water quality sampling shall be conducted in accordance with Env-Dw 302, and additional samples shall be collected and analyses performed if necessary to establish a contamination control program in accordance with Env-Dw 303.23.N.H. Code Admin. R. Env-Dw 303.15
(See Revision Note at part heading for Env-Dw 303) #8998, eff 9-29-07
Amended by, Volume XXXVI Number 14, Filed April 7, 2016, Proposed by #11059, Effective 4/1/2016, Expires 4/1/2026.