N.H. Code Admin. R. Rev 506.01
(b) Any excavation on public lands or a public right-of-way, where the earth excavated will be used exclusively in the construction or alteration of the public land or public right-of-way, shall be exempt from the excavation tax provided that the excavated earth is:
(2) Under the ownership and jurisdiction of:
Source. #7381, eff 10-24-00; ss by #7860, eff 3-31-03, EXPIRED: 3-31-11 New. #9926, eff 5-18-11 (from Rev 507.01); ss by #12834, eff 7-25-19