N.H. Code Admin. R. Env-Sw 1105.08
(b) Regular operating hours outside of the normal 6:00 a.m. to 6:00 p.m. window specified by (a) above shall be allowed only if:
(1) Approved by the department in the terms and conditions of the permit based on information provided in an application which demonstrates:
Source. #6619-B, eff 10-29-97; (See Revision Note at chapter heading for Env-Sw 1100); ss by #8459, eff 10-28-05 (formerly Env-Wm 2805.08); ss by #10598, eff 7-1-14; ss by #14108, eff 11-13-24, EXPIRES: 11-13-34