Hanford Site National Environmental Policy Act (NEPA) - Pacific ...

Table of Contents
Preface ..................................................................................................................................................iii
Acknowledgements ................................................................................................................................ v
Acronyms, Abbreviations, and Symbols ..............................................................................................vii
Glossary...............................................................................................................................................xiii
4.0 Affected Environment ............................................................................................................... 4.1
Introduction ......................................................................................................................................... 4.1
4.1 Climate and Meteorology .......................................................................................................... 4.5
4.1.1 Wind.......................................................................................................................... 4.8
4.1.2 Temperature and Humidity ..................................................................................... 4.12
4.1.3 Precipitation ............................................................................................................ 4.12
4.1.4 Fog and Visibility.................................................................................................... 4.13
4.1.5 Severe Weather ....................................................................................................... 4.13
4.2 Air Quality............................................................................................................................... 4.15
4.2.1 Atmospheric Dispersion.......................................................................................... 4.15
4.2.2 Nonradiological Air Quality.................................................................................... 4.16
4.2.2.1 Prevention of Significant Deterioration ..................................................... 4.17
4.2.2.2 Emissions of Nonradiological Pollutants ................................................... 4.19
4.2.2.3 Offsite Monitoring...................................................................................... 4.19
4.2.2.4 Background Monitoring ............................................................................. 4.19
4.2.2.5 Onsite Monitoring ...................................................................................... 4.20
4.2.3 Radiological Air Quality ......................................................................................... 4.21
4.2.3.1 Radiological Emissions .............................................................................. 4.21
4.2.3.2 Dose Assessments ...................................................................................... 4.21
4.2.3.3 Environmental Monitoring......................................................................... 4.23
4.3 Geology ................................................................................................................................... 4.25
4.3.1 Physiography........................................................................................................... 4.25
4.3.2 Stratigraphy ............................................................................................................. 4.26
4.3.2.1 Stratigraphy of Rocks Older than the Columbia River Basalt Group ........ 4.29
4.3.2.2 Columbia River Basalt Group .................................................................... 4.29
4.3.2.3 Post-Columbia River Basalt Stratigraphy .................................................. 4.30
xv