Lodging of DOE Env. Addendum and NETL natural gas production report, part one and comments under CP09-6.

ADDENDUM TO ENVIRONMENTAL REVIEW DOCUMENTS CONCERNING EXPORTS OF NATURAL GAS FROM THE UNITED STATES AUGUST 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 August 2014 This page intentionally left blank. Table of Contents List of Tables ............................................................................................................................................... I List of Figures............................................................................................................................................. II List of Acronyms and Abbreviations ......................................................................................................IV 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 40 Projections of Future GHG Emissions 42 Regulatory Issues 43 Conclusions 44 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 52 Opportunity for Harm 54 Assessment of Environmental Impacts 55 Land Use Impacts ..................................................................................................................................... 56 Description of Disturbances 57 Traffic and Roadway Impacts 66 References .................................................................................................................................................. 69 Appendix A: Calculations from Greenhouse Gas Section..................................................................... 78 Appendix B: Public Comments................................................................................................................ 79 Air Quality 81 This page intentionally left blank. III List