RSA 155-E:2 Permit Required.

No owner shall permit any excavation of earth on his premises without first obtaining a permit therefor, except as follows:
I.
Existing Excavations. The owner of an excavation which lawfully existed as of August 24, 1979, from which earth material of sufficient weight or volume to be commercially useful has been removed during the 2-year period before August 24, 1979, may continue such existing excavation on the excavation site without a permit, subject to the following:
(a) Such an excavation site shall be exempt from the provisions of local zoning or similar ordinances regulating the location of the excavation site, provided that at the time the excavation was first begun, it was in compliance with such local ordinances and regulations, if any, as were then in e