3r {)1 Mt...l.Jt+~ pi e. {) n:t:f"J-VYJDJe JDT "~i-t7$ ' -=====-:.=---=-==._ I I Draft Qzudity • lutegrit)' • Creativity •· ResjJattsiveness Corrective Measures Study Report I ,. I I I Fort McCoy, Wisconsin I I Prepared for I I I U.S. Army I Corps of Engineers Omaha District I I March 1996 I I I J Rust Environment I & Infrastructure I Fort McCoy Draft Co"ective Measures Study Report I TABLE OF CONTENTS I Section I 1.0 INTRODUCTION .................................................. 1-1 1.1 PROJECT OVERVIEW ....................................... 1-1 1.2 PURPOSE AND ORGANIZATION OF CMSR .................... 1-1 I 1.3 FACILITY BACKGROUND . 1-2 2.0 CLOSED LANDFILL NO. 2, CLOSED LANDFILL NO. 3, AND I GRIT AREA ....................................................... 2-1 2.1 INTRODUCTION ........... : ............................... 2-1 2.2 DESCRIPTION OF CL2 AND CL3 .............................. 2-1 I 2.3 WASTE MANAGEMENT ACTIVITIES ......................... 2-1 2.4 PHYSICAL SITE CHARACTERISTICS ......................... 2-1 2.4.1 Site Setting . 2-1 I 2.4.2 Topography and Drainage .............................. 2-2 2.4.3 Surficial Soils ....................................... 2-2 2.4.4 Geology ............................................ 2-3 I 2.4.5 Hydrogeology ....................................... 2-3 2.5 SITE CONCEPTUAL MODEL ................................. 2-3 I 2.6 NATURE AND EXTENT OF CONTAMINATION ................. 2-4 2.7 CONTAMINANT FATE AND TRANSPORT ..................... 2-5- 2.8 DEVELOPMENT OF CORRECTIVE ACTION OBJECTIVES ....... 2-5 I 2.8.1 Introduction ......................................... 2-5 2.8.2 Federal Regulations and Permits ......................... 2-6 2.8.3 Wisconsin Regulations and Permits ................ ·...... 2-7 I 2.8.4 Local Regulations and Permits . 2-8 · 2.8.5 Hwnan Health and Environmental Assessment ............. 2-8 2.8.6 Soil Objectives ....................................... 2-9 I 2.8. 7 Groundwater Objectives .............................. 2-10 2.9 CORRECTIVE MEASURES TECHNOLOGIES .................. 2-11 2.9.1 Introduction ........................................ 2-11 I 2.9.2 Identification of Applicable Source Material Technologies ... 2-11 2.9.3 Identification of Applicable Groundwater Technologies ..... 2-15 I 2.10 CORRECTIVE MEASURES ALTERNATIVES .................. 2-20 2.1 0.1 Introduction ........................................ 2-20 2.10.2 Site-Specific Factors Affecting Development of Alternatives . 2-21 I 2.10.3 Description and Evaluation of Corrective Action Alternatives . 2-21 2.1 0.4 Recommended Alternative . • . 2-40 t 3.0 FIRE TRAINING BURN" PIT 1· ...................................... 3-1 3.1 DESCRIPTION OF FIRE TRAINING BURN PIT 1 ................ 3-1 I 3.2 WASTE MANAGEMENT ACTIVITIES ......................... 3-1 I D:IFTMCcorJIPIXMSJ\TOC. March 1996 I Fort McCoy Draft Co"ective Measures Study Report I Section lw 3.3 PHYSICAL SITE CHARACTERISTICS ......................... 3-1 I 3.3 .1 Site Setting . 3-1 3.3.2 Topography and Drainage .............................. 3-1 3.3.3 Surficial SQils ....................................... 3-1 I 3.3.4 Geology ........................................· .... 3-2 3.3.5 Hydrogeology ....................................... 3-2 3.4 SITE CONCEPTIJAL MODEL ................... ·..... : ........ 3-2 I 3.5 NATIJREANDEXTENTOFCONTAMINATION ................. 3-2 3.6 CONTAMINANT FATE AND TRANSPORT ..................... 3-3 3.7 DEVELOPMENT OF CORRECTIVE ACTION OBJECTIVES ....... 3-3 I 3.7.1 Introduction ...................... ; .................. 3-3 3.7.2 Federal Regulations and Permits ........................ 3-4 3.7.3 Wisconsin Regulations and Permits ...................... 3-4 I 3.7.4 Local Regulations and Permits .......................... 3-5 3.7.5 Human Health and Environmental Assessment ............. 3-5 I 3.7.6 Soil Objectives ....................................... 3-7 3.7.7 Groundwater Objectives ............................... 3-7 3.8 CORRECTIVE MEASURES TECHNOLOGIES ................... 3-8 I 3.8.1 Introduction ......................................... 3-8 3.8.2 Identification of Applicable Source Material Technologies .... 3-8 3.8.3 Identification of Applicable Groundwater Technologies ..... 3-12 I 3.9 CORRECTIVE MEASURES ALTERNATIVES .................. 3-16 3.9.1 Introduction ........................................ 3-16 3.9.2 Site-Specific Factors Affecting Development of Alternatives . 3-16 I 3.9.3 Description and Evaluation of Corrective Action Alternatives . 3-17 3.9.4 Recommended Alternative ............................ 3-31 I 4o0 FIRE TRAINING BURN PIT 2 oo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o oo o o oo o 4-1 4.1 DESCRIPTION OF FIRE TRAINING BURN PIT 2 ................ 4-1 4.2 WASTE MANAGEMENT ACTIVITIES ......................... 4-1 I 4.3 PHYSICAL SITE CHARACTERISTICS ......................... 4-1 4.3.1 Site Setting .......................................... 4-1 I 4.3.2 Topography and Drainage ........................ ,. 4-1 4.3.3 Surficial Soils ....................................... 4-1 4.3.4 Geology ............................................ 4-2 I 4.3.5 Hydrogeology ....................................... 4-2 4.4 SITE CONCEPTIJAL MODEL ................................. 4-2 4.5 NATIJRE AND EXTENT OF CONTAMINATION ................. 4-2 I 4.6 CONTAMINANT FATE AND TRANSPORT ..................... 4-3 4. 7 DEVELOPMENT OF CORRECTIVE ACTION OBJECTIVES ....... 4-3 4.7.1 Introduction ......................................... 4-3 a 4.7.2 Federal Regulations and Permits ........................ 4-4 4. 7.3 Wisconsin Regulations and Permits .............. , ....... 4-5 I D:IFTMCCOY IIPDCMSII7DC. ;; March 1996 I I Fort McCoy Draft Corrective Measures Study Report I Section I 4.7.4 Local Regulations and Permits .......................... 4-6 4.7.5 Human Health and Environmental Assessment ............. 4-6 4.7.6 Soil Objectives ....................................... 4-6 I 4.7.7 Groundwater Objectives ............................... 4-7 4.8 CORRECTIVE MEASURES TECHNOLOGIES ................... 4-8 4.8.1 Introduction ......................................... 4-8 I 4.8.2 Identification of Applicable Groundwater Technologies ...... 4-8 4.9 CORRECTIVE MEASURES ALTERNATIVES .................. 4-13 4.9.1 Introduction ........................................ 4-13 I 4.9.2 Site-Specific Factors Affecting Development of Alternatives . 4-13 4.9.3 Description and Evaluation ofCorrectiveAction Alternatives . 4-14 I 4.9.4 Recommended Alternative ............................ 4-20 5.0 CLOSED LANDFILL 4 ............................................ 5-l 5.1 DESCRIPTION OF CL4 ...................................... 5-1 I 5.2 WASTE MANAGEMENT ACTIVITIES ......................... 5-1 5.3 PHYSICAL SITE CHARACTERISTICS ......................... 5-1 I 5.3.1 Site Setting .......................................... 5-1 5.3.2 Topography and Drainage .............................. 5-1 5.3.3 Surficial Soils ....................................... 5-1 I 5.3.4 Geology ............................................ 5-2 5.3.5 Hydrogeology ....................................... 5-2 5.4 SITE CONCEPTUAL MODEL ................................. 5-2 1. 5.5 NATURE AND EXTENT OF CONTAMINATION ................. 5-2 5.6 CONTAMINANTFATEANDTRANSPORT ..................... 5-3 5.7 DEVELOPMENT OF CORRECTIVE ACTION OBJECTIVES ....... 5-3 I 5.7.1 Introduction ......................................... 5-3 5.7.2 Federal Regulations and Permits ......................... 5-4 5.7.3 Wisconsin Regulations and Permits ...................... 5-4 I 5.7.4 Local Regulations and Permits .......................... 5-5 5.7.5 Human Health and Environmental Assessment ............. 5-5 I 5.7.6 Soil Objectives ....................................... 5-7 5.7.7 Groundwater Objectives ............................... 5-7 5.8 CORRECTIVE MEASURES TECHNOLOGIES ................... 5-8 I 5.8.1 Introduction .......................................... 5-8 5.8.2 Identification of Applicable Source Material Technologies .... 5-8 5.8.3 Identification of Applicable Groundwater Technologies ..... 5-11 I 5.8.4 Identification of Applicable Landfill Gas (LFG) Technologies 5-16 5.9 CORRECTIVE MEASURES ALTERNATIVES .................. 5-16 5.9.1 Introduction ........................................ 5-16 I 5.9.2 Site-Specific Factors Affecting Development of Alternatives . 5-16 5. 9.3 Description and Evaluation of Corrective Action Alternatives . 5-17 I 5.9.4 Recommended Alternative ............................ 5-30 I D:IFTMCCOY JIPDCMSI\TOC. iii March 1996 Fort McCoy I Draft Co"ective Measures Study Report I Section ~ 6.0 PESTICIDE DISPOSAL SITE (PDS) ••..••••.•••••••••.......•....... 6-1 ,. 6.1 DESCRIPTION OF PESTICIDE DISPOSAL SITE ................. 6-1 I 6.2 WASTE MANAGEMENT ACTIVITIES ......................... 6-1 6.3 PHYSICAL SITE CHARACTERISTICS ......................... 6-1 I. 6.3 .1 Site Setting .. ·. 6-1 6.3.2 Topography and Drainage .............................. 6-1 6.3.3 Surficial Soils ....................................... 6-2 I 6.3.4 Geology ............................................ 6-2 6.3.5 Hydrogeology ....................................... 6-2 6.4 SITE CONCEPTUAL MODEL ................................. 6-2 I 6.5 NATUREANDEXTENTOFCONTAMINATION ................. 6-2 6.6 CONTAMINANT FATE AND TRANSPORT ..................... 6-3 6.7 DEVELOPMENT OF CORRECTIVE ACTION OBJECTIVES ....... 6-3 I 6.7.1 Introduction ......................................... 6-3 6.7.2 Federal Regulations