RECORD OF DECISION (RODS) - Superfund Records · PDF fileEPA/ROD/R09-99/046 1999 € EPA...

EPA/ROD/R09-99/0461999
EPA Superfund
Record of Decision:
CAMP PENDLETON MARINE CORPS BASEEPA ID: CA2170023533OU 03CAMP PENDLETON, CA02/11/1999

46612
MARINE CORPS BASE CAMP PENDLETON, CALIFORNIA
RECORD OF DECISIONOPERABLE UNIT 3
FINAL11 FEBRUARY 1999

iSCI/1 -98/WPC/Pendleton/R0D12199.wpd
Table of Contents
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
List of Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
List of Abbreviations/Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
1.0 Declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Site Name and Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Statement of Basis and Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3 Assessment of Operable Unit 3 Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.4 Description of the Selected Remedy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4.1 Description of Selected Remedy for Sites 1A, 1D, 1E, 1F, and 2A . . . . . . . . . 1-4
1.4.2 Description of Selected Remedy for Site 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.4.3 Description of Selected Remedy for Sites 1B, 1C, 1I, 2C, 2D, 2F,
2G, 10, 16, 17, 18, 27, 32, 34, 35, 36, 37, 38, 39, 40, 41, and 42 . . . . . . . . . . 1-5
1.5 Statutory Determinations for Sites 1A, 1D, 1E, 1F, 2A, and 7 . . . . . . . . . . . . . . . . . . 1-6
1.6 Declaration Statement - No Action Necessary for Protection for Sites 1B, 1C,
1I, 2C, 2D, 2F, 2G, 10, 16, 17, 18, 27, 32, 34, 35, 36, 37, 38, 39, 40, 4 1, and 42 . . . 1-6
2.0 Decision Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Site Name, Location, and Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Highlights of Community Participation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3 Scope and Role of Operable Unit 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Remedial Action Selected for Sites 1A, 1D, 1E, 1F, and 2A . . . . . . . . . . . . . . . . . . . . 2-2
2.4.1 Site 1 - Refuse Burning Grounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4.1.1 Site Name, Location, and Description - Sites 1A, 1D, 1E, and 1F . . 2-3
2.4.1.2 Site History and Enforcement Activities - Sites 1A, 1D, 1E, and 1F 2-4
2.4.1.3 Summary of Site Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.4.1.3.1 Site 1A - Refuse Burning Ground in 14 Area . . . . . . . . 2-5
2.4.1.3.2 Site 1D - Refuse Burning Ground in 20 Area . . . . . . . . 2-8
2.4.1.3.3 Site 1E - Refuse Burning Ground in 32 Area . . . . . . . 2-10
2.4.1.3.4 Site 1F - Refuse Burning Ground in 43 Area . . . . . . . . 2-13
2.4.1.4 Summary of Site Risks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.4.1.4.1 Site 1A -Refuse Burning Ground in 14 Area . . . . . . . . 2-19
2.4.1.4.2 Site 1D - Refuse Burning Ground in 20 Area . . . . . . . 2-24

iiSCI/1 -98/WPC/Pendleton/R0D12199.wpd
Table of Contents(Continued)
2.4.1.4.3 Site 1E - Refuse Burning Ground in 32 Area . . . . . . . 2-26
2.4.1.4.4 Site 1F - Refuse Burning Ground in 43 Area . . . . . . . . 2-28
2.4.2 Site 2A - Grease Disposal Pit in 14 Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
2.4.2.1 Site Name, Location, and Description . . . . . . . . . . . . . . . . . . . . . . 2-31
2.4.2.2 Site History and Enforcement Activities . . . . . . . . . . . . . . . . . . . . 2-32
2.4.2.3 Summary of Site Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.4.2.3.1 Geology and Hydrogeology . . . . . . . . . . . . . . . . . . . . 2-33
2.4.2.3.2 Soil Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
2.4.2.4 Summary of Risks Associated with Site 2A . . . . . . . . . . . . . . . . . . 2-34
2.4.2.4.1 Human Health Risk Characterization . . . . . . . . . . . . . 2-34
2.4.2.4.2 Ecological Risk Assessment . . . . . . . . . . . . . . . . . . . . 2-35
2.4.3 Description of Alternatives - Sites 1A, 1D, 1E, 1F, and 2A . . . . . . . . . . . . . . 2-37
2.4.3.1 Alternative 1: No Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
2.4.3.2 Alternative 2: Excavation/Removal and On-Base Disposal . . . . . . . 2-38
2.4.3.3 Alternative 3: Excavation/Removal and Off-Base Disposal . . . . . . 2-39
2.4.4 Summary of Comparative Analysis of Alternatives - Sites 1A, 1D, 1E,
1F, and 2A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
2.4.4.1 Threshold Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
2.4.4.1.1 Overall Protection of Human Health and the
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
2.4.4.1.2 Compliance with ARARs. . . . . . . . . . . . . . . . . . . . . . . 2-40
2.4.4.2 Primary Balancing Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
2.4.4.2.1 Long-Term Effectiveness and Permanence . . . . . . . . . 2-41
2.4.4.2.2 Reduction of Toxicity, Mobility, and Volume
Through Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
2.4.4.2.3 Short-Term Effectiveness . . . . . . . . . . . . . . . . . . . . . . 2-41
2.4.4.2.4 Implementability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2.4.4.2.5 Cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2.4.4.3 Modifying Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.4.4.3.1 State Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.4.4.3.2 Community Acceptance . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.4.5 Selected Remedy for OU3 Sites 1A, 1D, 1E, 1F, and 2A. . . . . . . . . . . . . . . . 2-43

Table of Contents (Continued)
iiiSC1/1-98/WPC/Pcndleto/R0D12199.wpd
2.4.6 Statutory Determinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
2.4.6.1 Protection of Human Health and the Environment . . . . . . . 2-47
2.4.6.2 Compliance with Applicable or Relevant and Appropriate
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
2.4.6.3 Cost-Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
2.4.6.4 Use of Permanent Solutions and Alternative Treatment
Technologies to the Extent Practicable . . . . . . . . . . . . . . . 2-47
2.5 Remedial Action Selected for Site 7 - Box Canyon Landfill . . . . . . . . . . . . . . 2-48
2.5.1 Site Name, Location, and Description - Site 7 . . . . . . . . . . . . . . . . . . 2-48
2.5.2 Site History and Enforcement Activities . . . . . . . . . . . . . . . . . . . . . . 2-49
2.5.3 Summary of Site Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
2.5.3.1 Geology and Hydrogeology . . . . . . . . . . . . . . . . . . . . . . . . 2-50
2.5.3.2 Soil Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
2.5.3.3 Groundwater Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
2.5.3.4 Ambient Air and Soil Gas Results . . . . . . . . . . . . . . . . . . . 2-55
2.5.4 Summary of Site Risks - Site 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
2.5.4.1 Human Health Risk Characterization . . . . . . . . . . . . . . . . . 2-56
2.5.4.2 Ecological Risk Assessment . . . . . . . . . . . . . . . . . . . . . . . 2-57
2.5.5 Description of Alternatives - Site 7 . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
2.5.6 Summary of Comparative Analysis of Alternatives - Site 7 . . . . . . . . 2-58
2.5.6.1 Overall Protection of Human Health and the Environment and
Compliance with ARARs . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
2.5.6.2 Long-Tenn Effectiveness and Permanence . . . . . . . . . . . . . 2-58
2.5.6.3 Reduction of Toxicity, Mobility, and Volume Through
Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
2.5.6.4 Short-Term Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
2.5.6.5 Implementability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
2.5.6.6 Cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
2.5.6.7 State Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.5.6.8 Community Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.5.7 Selected Remedy for Site 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.5.8 Statutory Determinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Date post:	20-Mar-2018
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