| | Closure Plan Open Burn/Open Detonation Site Former Atlantic |
| | 5,28 | | MB | Fleet Weapons Training Facility Vieques, Puerto Rico |
| | 126 | | stron |
| | 5428 | | ID | CH2M Hill |
| | 2005 | | rok |
| | Contents |
| | Abbreviations and Acronyms. iv |
| | 1 Introduction . 1-1 |
| | 2 Facility Description. 2-1 |
| | 2.1 Facility Location 2-1 |
| | 2.2 Facility Operation . 2-1 |
| | 2.3 OB/OD Site Description 2-7 |
| | 2.4 Waste Treated at OB/OD Site 2-11 |
| | 2.5 Environmental Setting . 2-11 |
| | 2.5.1 Climate 2-11 |
| | 2.5.2 Topography 2-11 |
| | 2.5.3 Surface Water. 2-11 |
| | 2.5.4 Geology. 2-17 |
| | 2.5.5 Groundwater 2-17 |
| | 3 Closure Plan Approach 3-1 |
| | 3.1 Closure Performance Standard 3-1 |
| | 3.2 Partial Closure and Final Closure Activities 3-2 |
| | 3.3 Closure Activities . 3-2 |
| | 3.3.1 Topographic Survey 3-2 |
| | 3.3.2 Geophysical Survey. 3-2 |
| | 3.3.3 Surface Clearance of MEC 3-5 |
| | 3.3.4 Subsurface Removal of Munitions 3-5 |
| | 3.3.5 Treatment and Disposal of Munitions 3-5 |
| | 3.3.6 Soil and Groundwater Sampling. 3-6 |
| | 3.3.7 Closure Cleanup Goals . 3-11 |
| | 3.3.8 Interim Closure Report/Revised Closure Plan. 3-11 |
| | 3.3.9 Site Cleanup, Inventory Removal, and Disposal of Decontamination Equipment 3-12 |
| | 3.3.10 Final Closure Report and Closure Certification 3-13 |
| | 3.3.11 Closure Cost Estimate. 3-13 |
| | 3.3.12 Financial Assurance Mechanism for Closure 3-14 |
| | 3.3.13 Post-Closure Plan 3-14 |
| | 3.3.14 Post-Closure Use of Property 3-14 |
| | 3.3.15 Post-Closure Care 3-14 |
| | 3.3.16 Post-Closure Security 3-14 |
| | 3.3.17 Post-Closure Contact 3-14 |
| | 3.3.18 Monitoring Plan. 3-15 |
| | 3.3.19 Post-Closure Notices. 3-15 |
| | 4 Closure Schedule 4-1 |
| | 4.1 Schedule for Closure 4-1 |
| | 4.2 Extensions for Closure Time. 4-2 |
| | 5 Closure Procedures5-1 |
| | 5.1 Surface Clearance of MEC and Setting Up Staging Area5-1 |
| | 5.2 Surveying of Grids for Geophysics 5-1 |
| | 5.3 Geophysical Survey 5-2 |
| | 5.3.1 Geophysical Prove Out .5-2 |
| | 5.3.2 Geophysical Data Collection 5-2 |
| | 5.4 Removal Of Subsurface Metallic Items5-4 |
| | 5.4.1 Hand Excavation5-5 |
| | 5.4.2 Munitions Identification .5-5 |
| | 5.4.3 Disposal of Recovered Scrap 5-6 |
| | 5.4.4 Processing of Inert MEC Items.5-6 |
| | 5.5 Surface Soil Sampling.5-6 |
| | 5.6 Soil Borings 5-8 |
| | 5.7 Subsurface Soil Sampling.5-8 |
| | 5.8 Monitoring Well Installation .5-9 |
| | 5.8.1 Monitoring Well Construction.5-9 |
| | 5.8.2 Monitoring Well Development5-10 |
| | 5.9 Groundwater Sampling from Monitoring Wells5-10 |
| | 5.10 Sampling Equipment Decontamination Procedures .5-11 |
| | 5.11 IDW Management.5-11 |
| | 5.12 Sample Analysis and Validation.5-15 |
| | 5.12.1 Sample Analysis.5-15 |
| | 5.12.2 Field Quality Control Procedures5-15 |
| | 5.12.3 Data Validation 5-16 |
| | 5.13 Health and Safety Procedures.5-17 |
| | 5.14 MEC Hazard Analysis for Unexploded Ordnance Activities 5-18 |
| | 5.15 MEC Hazard Controls5-20 |
| | 5.16 Approach For Establishing Cleanup Goals.5-22 |
| | 5.16.1 Identification of Contaminants of Potential Concern .5-23 |
| | 5.16.2 Exposure Assessment5-23 |
| | 5.16.3 Toxicity Assessment 5-24 |
| | 5.16.4 Risk Characterization 5-25 |
| | 5.16.5 Background Analysis 5-25 |
| | 5.17 Ecological Risk Assessment Approach 5-25 |
| | 5.18 Evaluation Of Remedial Alternatives 5-25 |
| | 6 References .6-1 |
| | Appendixes |
| | A UXO Avoidance Survey Procedures |
| | B Risk Assessment Screening Criteria |
| | C Geophysical Investigation Plan |
| | D Form 2-1 |
| | E ORS Metal Collection and Inspection Procedures |