N.H. Code Admin. R. Env-A 1310.04
For wallboard dryers, calcining mills, calciners, and gypsum rock dryers firing fuel oil, the NOx RACT requirements shall be as follows:
(a) When firing No. 2 fuel oil:
(b) When firing No. 4, No. 5, or No. 6 fuel oil:
Source. (See Revision Note at chapter heading for Env-A 1300) #9803, eff 10-31-10; ss by #12584, eff 8-15-18