N.H. Code Admin. R. Env-A 2103.02 – Visible Emission Standards

(a) The owner or operator shall not cause or allow visible emissions from any stationary source or device subject to this part 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. #6428-B, eff 1-18-97 (formerly Env-A 1203); ss by #8215, eff 11-24-04 (formerly Env-A 2107); ss by #10314, eff 4-23-13
APPENDIX
Provision of the Rule
Specific State or Federal Statutes or Regulations which the Rule is Intended to Implement
Env-A 2101
RSA 125-C:6, II
Env-A 2102
RSA 125-C:6, II
Env-A 2103
RSA 125-C:6, II