The purpose of this chapter is to establish emissions standards for particulate matter and visible emissions from ferrous and non-ferrous foundries, smelters, and investment casting operations.
N.H. Admin. Code § Env-A 2401.01
#6428-B, eff 1-18-97 (formerly Env-A 1206); ss by #8214, eff 11-24-04; ss by #10315, eff 4-23-13