XTO Energy Inc., a subsidiary of ExxonMobil, announced today the startup of a facility in southwestern Pennsylvania to recover marketable liquids from the natural gas produced in Butler County. The 340-acre facility is the first of its kind for XTO in the Appalachia region and includes 40 miles of connecting pipeline. Two gas compressor stations feed the facility, which is designed to treat approximately 125 million cubic feet of natural gas per day. “The facility will add value to XTO and Butler County,” said Tim McIlwain, senior vice president, production operations for XTO. “It allows valuable liquids to be separated from natural gas and provides economic growth in southwestern Pennsylvania.” At the peak of construction, 170 local and regional contractors were on site each day. XTO will employ 15 permanent employees to run the operation. Butler County is a vital part of XTO’s Appalachia division. In the past four years, 50 wells have been drilled over 46,000 net acres in the county. About XTO Energy XTO Energy Inc., a subsidiary of ExxonMobil, is a leading natural gas and oil producer in the U.S. with expertise in developing tight gas, shale gas, coal bed methane and unconventional oil resources. XTO has operations in all major U.S. producing regions, and holds more than 417,000 acres in Pennsylvania. In 2012, ExxonMobil paid more than $9 million in taxes to the state of Pennsylvania, and invested more than $3.3 million in higher education, medical care, environmental research and arts and civic organizations in Pennsylvania. CAUTIONARY STATEMENT: Expectations, business plans, and other statements of future events or conditions in this release are forward-looking statements. Actual future results, including project plans and timing and production rates, could differ materially due to changes in market conditions affecting the oil and gas industry or long-term oil and gas price levels; the timing and terms of regulatory approvals and other regulatory developments; the outcome of commercial negotiations; reservoir performance; technical or operating factors; and other factors discussed under the heading "Factors Affecting Future Results" in the Investors section of ExxonMobil’s website ( www.exxonmobil.com) and in Item 1A of ExxonMobil’s most recent Form 10-K. References to quantities of oil and gas in this release include volumes that are not yet classified as proved reserves but that we believe will be produced in the future.