N.H. Code Admin. R. Saf-C 306.07
(a) Pursuant to RSA 259:58-b, conversion rates for motor fuel equivalent gallons shall be as follows:
Source. #10753, INTERIM, eff 1-1-15, EXPIRED: 6-30-15 New. #10890, eff 7-16-15; ss by #13186, eff 4-7-21 (See Revision Note #3 at Chapter Heading for Saf-C 300)