Southwest Gas Corporation is engaged in the business of purchasing, distributing and transporting natural gas in Arizona, Nevada and California. The Company has two business segments: natural gas operations and construction services. The Company operates two pipeline transmission systems: a system, including a liquefied natural gas (LNG) storage facility owned by Paiute extending from the Idaho-Nevada border to the Reno, Sparks, and Carson City areas and communities in the Lake Tahoe area in both California and Nevada and other communities in northern and western Nevada, and a system extending from the Colorado River at the southern tip of Nevada to the Las Vegas distribution area. The natural gas operations segment includes acquiring and arranging delivery of natural gas to its system. The construction services segment consists of Centuri, which includes NPL Construction Co., Link-Line Contractors, W.S. Nicholls Construction and Brigadier Pipelines.