Natural Resources & Environment
(by Gary Steinbauer and Kevin Garber)
Unconventional natural gas development in the Marcellus and Utica shale plays has seen unprecedented growth since 2012. Ohio, Pennsylvania, and West Virginia are now among the top gas-producing states, with Pennsylvania emerging as the second-largest natural gas producer in 2018, behind Texas. U.S. Energy Information Administration, Natural Gas Marketed Production, www.eia.gov/dnav/ng/ng_prod_sum_a_EPG0_VGM_mmcf_a.htm (last visited Aug. 8, 2019). The historic rise in production comes with increased volumes of produced water and waste streams that must be managed by natural gas operators. Produced water is naturally occurring brine brought up to the surface from the hydrocarbon reservoir during extraction of natural gas. Although the volume of produced water varies by well and formation, produced water is by far the largest water source by volume generated in the gas production process. U.S. Environmental Protection Agency (EPA), Management of Exploration, Development and Production Wastes: Factors Informing a Decision on the Need for Regulatory Action (Apr. 2019), at 3–11, www.epa.gov/sites/production/files/2019-04/documents/management_of_exploration_development_and_ production_wastes_4-23-19.pdf. Many unconventional natural gas operators treat, reuse, and recycle produced water to increase their water usage efficiency, cut down on the costs of disposal, and recover valuable materials.
Implementing the most effective strategy for produced water management requires compliance with a complex web of interrelated federal and state laws, which include state oil and gas-related laws, local laws and ordinances, and environmental laws. This article explores the most commonly used management strategies for produced water in the Marcellus and Utica shale plays in these three states and analyzes the federal and state environmental regulatory regimes governing such management alternatives. It begins by examining the chemical characteristics and volume of produced water from an unconventional natural gas well. It then analyzes the federal and state environmental regulatory landscape for the most common ways that produced water is managed: (1) reuse or recycling within or outside the gas field; …