Comments of Robert J. Walters re the Atlantic Coast Pipeline Project under PF15-6.

ADDENDUM TO ENVIRONMENTAL REVIEW DOCUMENTS CONCERNING EXPORTS OF NATURAL GAS FROM THE UNITED STATES MAY 29, 2014 U.S. DEPARTMENT OF ENERGY This page intentionally left blank. ADDENDUM TO ENVIRONMENTAL REVIEW DOCUMENTS CONCERNING EXPORTS OF NATURAL GAS FROM THE UNITED STATES DRAFT REPORT May 29, 2014 This page intentionally left blank. Table of Contents List of Tables ............................................................................................................................................... I List of Figures.............................................................................................................................................. I List of Acronyms and Abbreviations ..................................................................................................... III Introduction ................................................................................................................................................. 1 Purpose 3 Public Comments 3 Unconventional Natural Gas Production Activities in the United States 4 Water Resources ....................................................................................................................................... 10 Water Quantity 10 Water Quality 13 Construction 13 Drilling 13 Hydraulic Fracturing Fluids 14 Flowback and Produced Waters 18 Conclusions 19 Air Quality ................................................................................................................................................. 20 Regulations 20 Emission Components and Sources 22 Conclusions 32 Greenhouse Gas Emissions from Upstream Natural Gas Industry ..................................................... 33 GHGs Associated with Upstream Natural Gas Industry 35 Sources of Emissions 36 Phases of Industry Activity and GHG Sources 37 Estimates of GHG Emissions 39 Projections of Future GHG Emissions 42 Regulatory Issues 42 Conclusions 43 Induced Seismicity Associated with Unconventional Gas and Oil Activities ...................................... 45 Seismicity 46 Causes of Induced Seismicity Associated with Oil and Gas Industry Activities 49 Industry Practices and Regulations 51 Opportunity for Harm 53 Assessment of Environmental Impacts 53 Land Use Impacts ..................................................................................................................................... 55 Description of Disturbances 55 Traffic and Roadway Impacts 64 References .................................................................................................................................................. 67 Appendix .................................................................................................................................................... 75 List of Tables Table 1: U.S. Natural Gas Production by Source (Trillion scf) .................................................................... 6 Table 2: Water Intensity.........................................