the meaning defined at section 1.193–1(b)(2) of title 26, Code of Federal Regulations. (6) Facility The term facility means any physical property, plant, building, structure, source, or stationary equipment located on one or more contiguous or adjacent properties in actual physical contact or separated solely by a public roadway or other public right-of-way and under common ownership or common control, that emits or may emit any greenhouse gas. (7) Fossil fuel The term fossil fuel means coal, petroleum products, or natural gas. (8) Greenhouse gas The term greenhouse gas means carbon dioxide, nitrous oxide, methane, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. (9) Greenhouse gas effects The term greenhouse gas effects means the adverse effects of greenhouse gasses on health or welfare caused by the greenhouse gas’s heat-trapping potential or its effect on ocean acidification. (10) Lifecycle greenhouse gas emissions The term lifecycle greenhouse gas emissions has the meaning given that term in section 211 of the Clear Air Act ( 42 U.S.C. 7545(o)(1)(H) ). (11) Natural gas The term natural gas means any fuel consisting in whole or in part of natural gas, including components of natural gas such as methane and ethane