How have courts interpreted a statute that prohibits the unreasonable waste of natural gas?

[6 Cal.App.3d 698] People v. Associated Oil Co., 211 Cal. 93, 108, 294 P. 717, 720: The court interpreted a statute which prohibited 'the unreasonable waste of natural gas.'

Petersen v. Friedman, 162 Cal.App.2d 245, 247, 328 P.2d 264: In question was an easement to have an unobstructed view to the extent that said view will be enjoyed by limiting any structures or trees on the property. (Obviously this easement would have to be enforced by the rule of reason.) A television antenna was found to have obstructed the view in violation of the condition.