N.H. Code Admin. R. Env-A 2404.04 – Visible Emission Standards for Non-Ferrous Foundries, Smelters, or Investment Casting Operations

(a) The owner or operator shall not cause or allow visible fugitive emissions or visible stack emissions for any non-ferrous foundry, smelter, or investment casting to exceed an average of 20 percent opacity for any continuous 6-minute period.
(b) Opacity shall be determined in accordance with Env-A 807.
Source. #10315, eff 4-23-13 (from Env-A 2405.03); ss by #13694, eff 7-22-23
Appendix
Provision of the Rule
Specific State or Federal Statutes or Regulations which the Rule is Intended to Implement
Env-A 2401
RSA 125-C:6, II
Env-A 2402
RSA 125-C:6, II
Env-A 2403
RSA 125-C:6, II
Env-A 2404
RSA 125-C:6, II