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Acknowledgments US Department of Transportation - BTS

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KEY: N = data do not exist; R = revised.aTotal does not sum from components due to the omission <strong>of</strong> a line from source table for depreciation and other noncash expenses.bFigures obtained by addition / subtraction and may not appear directly in data source.cIndustry total includes integrated and combination company totals in addition to distribution and transmission company totals.dNumber <strong>of</strong> employees in investor-owned companies is the sum <strong>of</strong> employees in distribution, transmission, integrated and combination companies.eBeginning in 1991 the number <strong>of</strong> interstate natural gas pipeline companies is calculated using the Federal Energy Regulatory Commission's FASTR database, which contains a listing by year <strong>of</strong>pipeline companies that are regulated and, therefore, required to pay tariff duties to the federal government. Data for the years prior to 1991 were collected from the Energy InformationAdministration's discontinued publication Statistics <strong>of</strong> Interstate Natural Gas Pipeline Companies. Data from the two sources may not be comparable.NOTESNumbers may not add to total due to independent rounding.Gas utility industry totals include employees <strong>of</strong> privately owned companies.Pipeline mileage data for 1990 and later years are obtained from the Pipeline and Hazardous Material Safety Administration and data for these years are not comparable with prior years or withnumbers published in the previous NTS reports.SOURCES1 1960-70: American Gas Association, Gas Facts, 1979 (Arlington, VA: 1980), table 134. 1980-2009: Ibid., Gas Facts, (Washington, DC: Annual Issues), table 11-2 and similar tables in earliereditions.2 1980: American Gas Association, Gas Facts, 1979 (Arlington, VA: 1980), table 134. 1990-2009: Ibid., Gas Facts, (Washington, DC: Annual Issues), table 11-1 and similar tables in earliereditions.3 1980-2009: American Gas Association, Gas Facts, (Washington, DC: Annual Issues), tables 11-1, 11-2, 11-3, and 11-4 and similar tables in earlier editions.4 1960-70: American Gas Association, Gas Facts, 1979 (Arlington, VA: 1980), table 44. 1980: Ibid., Gas Facts (Washington, DC: Annual Issue), tables 5-1 and 5-3.41990-2009:U.S. <strong>Department</strong> <strong>of</strong> <strong>Transportation</strong>, Pipeline and Hazardous Materials Safety Administration, Office <strong>of</strong> Pipeline Safety, available at http://ops.dot.gov/stats.htm as <strong>of</strong> July 14, 2011.5 1960-80: American Gas Association, Gas Facts, 1979 (Arlington, VA: 1980), table 153.5 1990-2009: Ibid., Gas Facts, (Washington, DC: Annual Issues), table 13-2 and similar tables in earlier editions.6 1960-90: U.S. <strong>Department</strong> <strong>of</strong> Energy, Energy Information Administration, Statistics <strong>of</strong> Interstate Natural Gas Pipeline Companies (Washington, DC: Annual Issues), preface. 1991-98: FederalEnergy Regulatory Commission, FERC Automated System for Tariff Retrieval (FASTR database), available at http://www.ferc.gov/industries/gas/gen-info/fastr/index.asp as <strong>of</strong> Feb. 18, 2004.6 1990-2009: Federal Energy Regulatory Commission, Office <strong>of</strong> External Affairs, personal communication, Aug. 8, 2011.7 1960-95: U.S. <strong>Department</strong> <strong>of</strong> Energy, Energy Information Administration, Natural Gas Annual, 1998 (Washington, DC: October 1999), table 98. 1996-2009: Ibid., Natural Gas Annual,(Washington, DC: Annual Issues), table 1, available at http://www.eia.doe.gov/oil_gas/natural_gas/data_publications/natural_gas_annual/nga.html as <strong>of</strong> July 14, 2011.8U.S. <strong>Department</strong> <strong>of</strong> <strong>Transportation</strong>, Pipeline and Hazardous Materials Safety Administration, Office <strong>of</strong> Pipeline Safety, available at http://ops.dot.gov/stats.htm as <strong>of</strong> July 14, 2011.

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