FINAL SITE INSPECTION REPORT Camp Abbot Deschutes County, OR FUDS Property No
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U.S. Army Corps of Engineers Omaha District FINAL SITE INSPECTION REPORT Camp Abbot Deschutes County, OR FUDS Property No. F10OR0041 Site Inspections at Multiple Sites, NWO Region Formerly Used Defense Sites Military Munitions Response Program Contract No. W912DY-04-D-0010 Delivery Order No. 003 June 2007 Shaw Environmental, Inc. 9201 E. Dry Creek Rd. The views, opinions, and/or findings contained in this report are those of the author(s) and should not be construed as official department of the Army position, policy, or decision, unless so designated by other Centennial, CO 80112 documentation. FINAL SITE INSPECTION REPORT Camp Abbot FUDS Property No. F10OR0041 Formerly Used Defense Sites Military Munitions Response Program June 2007 Submitted to: U.S. Department of the Army U.S. Army Corps of Engineers, Omaha District Prepared by: Shaw Environmental, Inc. 9201 E Dry Creek Road Centennial, Colorado 80112 Contract No. W912DY-04-D-0010 Delivery Order No. 003 Prepared/Reviewed by: Shaw Technical Lead: Dale Landon Shaw Project Chemist: Tim Roth Shaw Quality Control: Paul Sadowski Shaw Project Manager: Peter Kelsall The views, opinions, and/or findings contained in this report are those of the author(s) and should not be construed as an official Department of the Army position, policy, or decision, unless so designated by other documentation. Table of Contents________________________________________________ List of Figures................................................................................................................................................ v List of Tables .................................................................................................................................................vi List of Appendices ........................................................................................................................................vii List of Acronyms..........................................................................................................................................viii Glossary of Terms ......................................................................................................................................... x Executive Summary................................................................................................................................. ES-1 1.0 Introduction.....................................................................................................................................1-1 1.1 Project Authorization ............................................................................................................1-1 1.2 Site Name and Location .......................................................................................................1-1 1.3 Purpose, Scope, and Objectives of the Site Inspection........................................................1-2 1.4 Munitions Response Site Prioritization Protocol ...................................................................1-4 2.0 Property Description and History ....................................................................................................2-1 2.1 Historical Military Use...........................................................................................................2-1 2.2 Munitions Information ...........................................................................................................2-2 2.3 Ownership History ................................................................................................................2-2 2.4 Physical Setting....................................................................................................................2-2 2.4.1 Topography and Vegetation ....................................................................................2-2 2.4.2 Land Use.................................................................................................................2-2 2.4.3 Nearby Population...................................................................................................2-2 2.4.4 Climate ....................................................................................................................2-3 2.4.5 Area Water Supply ..................................................................................................2-3 2.4.6 Geologic and Hydrogeologic Setting .......................................................................2-3 2.4.6.1 Geology.....................................................................................................2-3 2.4.6.2 Hydrogeology............................................................................................2-3 2.4.7 Sensitive Environments...........................................................................................2-4 2.5 Previous Investigations for MC and MEC.............................................................................2-4 2.5.1 Archives Search Report...........................................................................................2-4 2.5.2 ASR Supplement.....................................................................................................2-4 2.5.3 Other Investigations ................................................................................................2-5 2.6 Other Land Uses that May Have Contributed to Contamination...........................................2-5 2.7 Past Regulatory Activities.....................................................................................................2-5 2.8 Previous MEC Finds.............................................................................................................2-5 3.0 Site Inspection Tasks......................................................................................................................3-1 3.1 Technical Project Planning...................................................................................................3-1 3.2 Additional Records Research ...............................................................................................3-3 3.2.1 Coordination with State Historic Preservation Office ...............................................3-3 3.2.2 Coordination Regarding Natural Resources............................................................3-3 3.2.3 Historical Aerial Photographs ..................................................................................3-4 3.2.4 Environmental Database Search.............................................................................3-4 3.2.5 Rights of Entry.........................................................................................................3-4 3.3 Field Work ............................................................................................................................3-4 3.4 Lab Analysis and Data Quality Review.................................................................................3-5 Camp Abbot Final SI Report.doc i Contract No. W912DY-04-D-0010, Delivery Order No. 003 June 2007 Table of Contents (Cont.) _________________________________________ 3.5 Variances from the SSWP....................................................................................................3-5 3.6 Third TPP Meeting................................................................................................................3-5 4.0 Munitions and Explosives of Concern.............................................................................................4-1 4.1 Field Observations................................................................................................................4-1 4.1.1 Range Complex No. 1 .............................................................................................4-1 4.1.2 Explosive Munitions Ranges (Anti-Tank Range, Demolition Area, and Mortar Range) .........................................................................................................4-2 4.1.3 Grenade Courts.......................................................................................................4-2 4.1.4 Burial Pit..................................................................................................................4-3 4.1.5 Chemical Training Area...........................................................................................4-3 4.2 MEC Risk Assessment.........................................................................................................4-3 4.2.1 Range Complex No. 1 .............................................................................................4-3 4.2.2 Explosive Munitions Ranges ...................................................................................4-4 4.2.3 Grenade Courts.......................................................................................................4-4 4.2.4 Burial Pit..................................................................................................................4-5 4.2.5 Chemical Training Area...........................................................................................4-5 5.0 Munitions Constituents Sampling and Analysis...............................................................................5-1 5.1 General Setting ....................................................................................................................5-1 5.2 Screening Values .................................................................................................................5-1 5.2.1 Determination of Background