Table of Contents For the years ended December 31, Increase/ Increase/ 2018 (Decrease) 2017 (Decrease) 2016 Natural Gas  (Bcf) Northeast Appalachia 459  16% 395  13% 350  Southwest Appalachia 105  24% 85  37% 62  Fayetteville Shale  (1) 243  (23%) 316  (16%) 375  Other – (100%) 1  0% 1  Total 807  1% 797  1% 788  Oil  (MBbls) Southwest Appalachia 3,355  51% 2,228  9% 2,041  Other 52  (47%) 99  (34%) 151  Total 3,407  46% 2,327  6% 2,192  NGL  (MBbls) Southwest Appalachia 19,679  39% 14,193  15% 12,317  Other 27  (48%) 52  (5%) 55  Total 19,706  38% 14,245  15% 12,372  Production volumes by area: (Bcfe) Northeast Appalachia 459  16% 395  13% 350  Southwest Appalachia  (2) 243  33% 183  24% 148  Fayetteville Shale  (1) 243  (23%) 316  (16%) 375  Other 1  (67%) 3  50% 2  Total 946  5% 897  3% 875  Production percentage:  (Bcfe) Natural gas 85%  88%  91%  Oil 2%  2%  1%  NGL 13%  10%  8%  Total 100%  100%  100%  (1) The Fayetteville Shale assets and associated reserves were sold on December 3, 2018. (2) Approximately 240 Bcfe, 179 Bcfe and 148 Bcfe for the years ended December 31, 2018, 2017 and 2016, respectively, were produced from the Marcellus Shale formation. · Production volumes for our E&P segment increased by 49 Bcfe for the year ended December 31, 2018, compared to the same period in 2017, as increased production volumes from Northeast and Southwest Appalachia more than offset decreased natural gas production volumes in the Fayetteville Shale, which reflects only eleven months of production in 2018 as a result of its sale in December 2018. · E&P segment production volumes increased 22 Bcfe for the year ended December 31, 2017, compared to the same period in 2016, as increased natural gas production volumes in Northeast and Southwest Appalachia more than offset decreased production volumes in the Fayetteville Shale. Commodity Prices The price we expect to receive for our production is a critical factor in determining the capital investments we make to develop our properties. Commodity prices fluctuate due to a variety of factors we cannot control or predict, including increased supplies of natural gas, oil or NGLs due to greater exploration and development activities, weather conditions, political and economic events, and competition from other energy sources. These factors impact supply and demand, which in turn determine the sales prices for our production. In addition to these factors, the prices we realize for our production are affected by our hedging activities as well as locational differences in market prices, including basis differentials. We will continue to evaluate the commodity price environments and adjust the pace of our activities in order to not exceed our fully- funded 2019 capital investment program. 52 Production Volumes Index to Financial Statements