Service is normally limited to natural gas of approximately 1000 BTU cubic foot heat content and approximately 0.6 specific gravity as referred to air, and at a normal pressure of 6 inches water column above atmosphere. The gas department reserves the right to furnish substitute or supplemental gas of different heat content and/or specific gravity either in the event of emergency or for other reasons. Pressure specified herein is nominal pressure and the gas department does not guarantee actual pressure.
(1970 Code, § 13-202)