N.H. Code Admin. R. Env-Or 605.10
When a discharge from an unknown source is discovered adjacent to a facility as defined in RSA 146-A:2, IX, RSA 146-C:1, V, or RSA 147-A:2, IV, the owner of such facility shall conduct an initial site characterization in accordance with Env-Or 605.07.
Source. (See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07; ss by #10831, eff 6-1-15; ss by #14419, eff 11-4-25, EXPIRES: 11-4-35