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Facility Design Requirements ........................................................................................................33 <br />U. S. District Courts and Magistrates .................................................................................... .33 <br />U. S. Bankruptcy Court ......................................................................................................... .33 <br />U. S. Congress ....................................................................................................................... .33 <br />U. S. Court of Appeals ........................................................................................................... .34 <br />U. S. Attorney .....................................................................................................................:...34 <br />Pretrial Services ..............................................................................................:.......................34 <br />Probation Office ......................................................................................................................34 <br />U. S. Marshals Service ............................................................................................................35 <br />General Services Administration ............................................................................................ 35 <br />Office of Federal Public Defender .......................................................................................... 35 <br />U. S. Trustee Program ............................................................................................. 36 !' <br />Shared-Use Facilities .............................................................................................................. 36 <br />Timing of Construction .................................................................................................................. 37 <br />Part 3-Affected Environment, Impacts, and Mitigation <br />Geology, Soils, and Seismic Conditions ........................................................................................39 <br />Affected Environment ............................................................................................................39 <br />Project Location and Topography .................................................................................39 <br />Geology and Soils .........................................................................................................39 <br />Seismic Conditions ............................................:.......................................................... 40 <br />Significant Adverse Impacts ................................................................................................... 43 <br />All Development Alternatives ....................................................................................... 43 <br />No-Action Alternative ................................................................................................... 43 <br />Potential Mitigation Measures ................................................................................................ 43 <br />Significant Unavoidable Adverse Impacts ............................................................................. 43 <br />Water Resources .......: .................................................................................................................... 45 <br />Affected Environment ............................................................................................................ 45 <br />Hydrologic Conditions .................................................................................................. 45 <br />Flooding ........................................................................................................................ 45 <br />Stormwater Runoff Quality ........................................................................................... 45 <br />Willamette River Water Quality ............................... ................................................ <br />.... 47 <br />Ground Water Conditions ............................................................................................. 47 <br />Ground Water Quality ................................................................................................... 48 <br />Significant Adverse Impacts ................................................................................................... 48 <br />Short-Term Construction Impacts ...........................:.......:............................................. 48 <br />Long-Term Operational Impacts ................................................................................... 50 <br />Potential Mitigation Measures ................................................................................................ 51 <br />Significant Unavoidable Adverse Impacts ............................................................................. 53 <br />Biological Resources ..................................................................................................................... 55 <br />Affected Environment ............................................................................................................ 55 <br />Existing Wildlife and Vegetation ...............................................:.................................. 55 <br />Alternative 1, Options A and B ..................................................................................... 56 <br />iv <br />