N.H. Code Admin. R. Saf-C 302.20
“Gallon” means a liquid measure that is not corrected for temperature and that contains 231 cubic inches or the equivalent of 4 1/4 pounds of propane or 100 cubic feet of natural gas. The term includes “gross gallons”.
Source. (See Revision Notes #1 and #2 at Chapter Heading for Saf-C 300) #10032, eff 11-22-11; renumbered by #10753 (formerly Saf-C 302.15); ss by #13186, eff 4-7-21 (formerly Saf-C 302.18) (See Revision Note #3 at Chapter Heading for Saf-C 300)