Hanford Site National Environmental Policy Act (NEPA) - Pacific ...
Hanford Site National Environmental Policy Act (NEPA) - Pacific ...
Hanford Site National Environmental Policy Act (NEPA) - Pacific ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
4.3.3 Clastic Dikes ........................................................................................................... 4.34<br />
4.3.4 Structure and Tectonics........................................................................................... 4.35<br />
4.3.5 Geology Specific to the Major <strong>Hanford</strong> <strong>Site</strong> Areas................................................. 4.37<br />
4.3.5.1 Geology of the 100 Areas............................................................................ 4.37<br />
4.3.5.2 Geology of the 200 Areas............................................................................ 4.38<br />
4.3.5.3 Geology of the 300 Area ............................................................................. 4.39<br />
4.3.6 Soils......................................................................................................................... 4.39<br />
4.3.7 Seismicity................................................................................................................ 4.42<br />
4.4 Hydrology................................................................................................................................ 4.49<br />
4.4.1 Surface Water.......................................................................................................... 4.49<br />
4.4.1.1 Columbia River ........................................................................................... 4.49<br />
4.4.1.2 Water Quality of the Columbia River.......................................................... 4.52<br />
4.4.1.3 Yakima River............................................................................................... 4.55<br />
4.4.1.4 Springs and Streams .................................................................................... 4.55<br />
4.4.1.5 Columbia Riverbank Springs....................................................................... 4.55<br />
4.4.1.6 Runoff and Net Infiltration.......................................................................... 4.57<br />
4.4.1.7 Flooding....................................................................................................... 4.58<br />
4.4.1.8 Non-Riverine Surface Water ....................................................................... 4.64<br />
4.4.2 <strong>Hanford</strong> <strong>Site</strong> Vadose Zone ...................................................................................... 4.66<br />
4.4.2.1 Vadose Zone Contamination ....................................................................... 4.67<br />
4.4.3 <strong>Hanford</strong> <strong>Site</strong> Groundwater ...................................................................................... 4.68<br />
4.4.3.1 Basalt-Confined Aquifer System................................................................. 4.69<br />
4.4.3.2 Unconfined Aquifer System ........................................................................ 4.69<br />
4.4.3.3 Limitations of Hydrogeologic Information ................................................. 4.72<br />
4.4.3.4 Groundwater Travel Times.......................................................................... 4.72<br />
4.4.3.5 Groundwater East and North of the Columbia River .................................. 4.73<br />
4.4.4 Groundwater Quality............................................................................................... 4.73<br />
4.4.5 100 Areas Hydrology .............................................................................................. 4.75<br />
4.4.6 200 Areas Hydrology .............................................................................................. 4.75<br />
4.4.7 300 Area Hydrology................................................................................................ 4.81<br />
4.4.8 North Richland Area Hydrology ............................................................................ 4.81<br />
xvi