"Sand and gravel source" means any source at which drying, mixing, conveying, sizing, or blending of rock, sand, or gravel products is conducted, and includes all equipment and auxiliaries used to dry, mix, convey, size, or blend such materials. The term does not include any equipment or activities related to grinding or crushing.
N.H. Admin. Code § Env-A 2802.05
#9793, eff 10-1-10