Section Env-Dw 303.24 - Source Design and Construction(a) When the new source is a well, the applicant shall: (1) Engage a New Hampshire-licensed water well contractor to install the well in compliance with applicable rules, currently We 100-800 as adopted by the New Hampshire water well board pursuant to RSA 482-B; (2) In addition to any construction standards included in (1), above, undertake the following: a. To prevent surface water from channeling along the well casing, the void area outside the well casing shall be filled with cement grout, bentonite grout, or a cement-bentonite grout mixture to within at least 6 feet of the ground surface from: 1. For bedrock production wells, the bottom of the pilot hole; and 2. For overburden production wells, an appropriate depth determined by the NH-licensed water well contractor based on well design and the type of unconsolidated material encountered when installing the well; and b. Extend the well casing: 1. At least 18 inches above the ground surface, for wells that are not installed within the 100-year flood zone; or 2. At least 3 feet above the base flood elevation or highest known flood elevation, whichever is higher, for production wells that are installed within the 100-year flood zone; and (3) Submit a well completion report prepared in accordance with applicable requirements, currently We 800. (b) When the source is not a well, the applicant shall submit a design and specification plan for the water collection structure to the department for review prior to construction. The department shall approve the design if the applicant demonstrates that the structure will protect the source against contamination from surface sources of pollutants.N.H. Code Admin. R. Env-Dw 303.24
(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.