10.2.5d_-_2012_-_Combined_Sect_3_4_5.pdf
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Legend Sample Station Location !( U-Total < 65 pCi/g !( U-Total > 65 pCi/g
Isoconcentration (Uranium Total) U-Total > 65 pCi/g (0-4 ft. bgs) U-Total > 65 pCi/g (4-8 ft. bgs) Drainage Ditch Former Building
AOC 1
p
Uranium Total Isoconcentrations in Soil for AOC 1
Sept 2011 Figure 3-1
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE- FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Note:
1. Aerial Photo taken in September 2005
0 30 6015 Feet
Cabrera Services, Inc 1106 N. Charles St Suite 300 Baltimore, MD 21201
Legend Sample Station Location !( U-Total < 65 pCi/g !( U-Total > 65 pCi/g
Drainage Ditch Isoconcentration (Uranium Total)
U-Total > 65 pCi/g (0-4 ft. bgs) U-Total > 65 pCi/g (4-8 ft. bgs) U-Total > 65 pCi/g (8-12 ft. bgs) Former Building
AOC 2
p
Uranium Total Isoconcentrations in Soil for AOC 2
Sept 2011 Figure 3-2
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE- FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Note:
1. Aerial Photo taken in September 2005
0 30 6015 Feet
Cabrera Services, Inc 1106 N. Charles St p
Uranium Total Isoconcentrations in Soil for AOC 6
Sept 2011 Figure 3-3
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE- FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Note:
1. Aerial Photo taken in September 2005
0 60 12030 Feet
Cabrera Services, Inc 1106 N. Charles St Suite 300 Baltimore, MD 21201
Legend Sample Station Location !( U-Total < 65 pCi/g !( U-Total > 65 pCi/g
Isoconcentration (Uranium Total)
Drainage Ditch Former Building
AOC 6
U-Total > 65 pCi/g (0-4 ft. bgs) U-Total > 65 pCi/g (4-8 ft. bgs) CPT Sounding Locations at Background#
Sept 2011
U.S. ARMY CORPS
OF ENGINEERS
q
Assumed Excavation Cutlines for OU 1
FEASIBILITY STUDY
USACE- FUSRAP
DuPont Chambers Works Deepwater, New Jersey
0 70 14035 Feet
Notes:
1. Aerial Photo taken in September 2005
Cabrera Services, Inc.
1106 N. Charles St Suite 300 Baltimore, MD 21201
4,000 cubic yards
9,000 cubic yards 0 300
270240210180150120906030
Surface Vertical Exaggeration - 25x
Distance in feet
De pth in fe et
Coal Tar Impacted Zone
FUSRAP Waste
A A'
Drain Pipes (Vertical Ex. 25x)
A A'
Figure 4-1
Former Drainage Ditch Location Current Drainage Ditch Location
Excavation Extent Contours Uranium Total > 65 pCi/g
Extent of Excavation 4 ft. bgs 8 ft. bgs 12 ft. bgs
Sept 2011
U.S. ARMY CORPS
OF ENGINEERS
q
Assumed Excavation Cutlines AOC 6
FEASIBILITY STUDY
USACE- FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Notes:
1. Aerial Photo taken in September 2005
Cabrera Services, Inc.
1106 N. Charles St Suite 300 Baltimore, MD 21201
B
B'
C C'
1201101009080706050403020100
De pth in fe et
Distance in feet
Vertical Exaggeration - 2x
Surface
C C'
130 140 150 160 17010
0 60 12030 Feet 825 cubic yards - in situ
Figure 4-2
Excavation Extent Contours Uranium Total > 65 pCi/g
Extent of Excavation 4 ft. bgs 8 ft. bgs
1201101009080706050403020100De pth in fe et
Distance in feet
Vertical Exaggeration - 2x
Surface
B B'
130 140
3,500 cubic yards - in situ
AOC 6
AOC 1
AOC 2
Railroad Tracks
Soil Processing Area (Expanded View Below)
Soil Processing Area i
Screen
Rejects Crush
Hot Soil
Clean Soil
Backfill
Excavated Soil and Rubble
Drainage Ditch i Gondola Cars
Segmented Gate System Soil Loading Area
Dump Truck
Figure 4-3
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Soil Excavation Location and Treatment Diagram for OU 1
Cabrera Services, Inc 1106 N. Charles St
Excavated Material
Rock Crusher
Cleaned Materials Returned to Site
Array of Gamma Ray
Detectors
Automated Gates
Hot Particles Diverted
Through Gates
Contaminated Soil Storage
Further Treatment and/or Disposal
Figure 4-4
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Schematic of Soil Sorting with Segmented Gate System
Cabrera Services, Inc 1106 N. Charles St
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1 ug/l
1 ug/l post Excavation Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Between 1-30 = 14,471
Post Excavation Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Between 1-30 = 4,478
2-MW-03
(B - Aquifer) Uranium Total 29560 ug/l 2-MW-05
(B - Aquifer) Uranium Total 167 ug/l
1-MW-10
(A - Aquifer) Uranium Total 109 ug/l
1-MW-18
(A - Aquifer) Uranium Total 1091 ug/l
1-MW-08
(A - Aquifer) Uranium Total 26316 ug/l
30 ug/l
100 ug/l
30 ug/l
100 ug/l
1,000 ug/l
Soil Cutlines Area (Sq. Ft.) = 5,335 Circumference (Ft.) = 271
Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Inside 1 ug/l = 9,837 Inside 30 ug/l = 5,577 Inside 100 ug/l = 3,923 Between 1-30 = 4,543 Between 30-100 = 1,654
Post Excavation (A-Aquifer) Groundwater Plume Area (Sq. Ft.)
Between 30-100 ug/l = 868 Between 100-1,000 = 249 Total Area = 1,117
Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Inside 1 ug/l = 33,252 Inside 30 ug/l = 15,430 Inside 100 ug/l = 8,196 Inside 1,000 ug/l = 2,258 Between 1-30 = 17,822 Between 30-100 = 7,234 Between 100-1,000 = 5,938
Soil Cutlines Area (Sq. Ft.) = 25,185 Circumference (Ft.) = 606
Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Inside 1 ug/l = 35,911 Inside 30 ug/l = 23,682 Inside 100 ug/l = 15,889 Inside 1,000 ug/l = 1,551 Between 30-100 = 7,793 Between 100-1,000 = 14,338 p
0 40 8020
Scale (feet)
Legend Sample Station Location !( Uranium Total < 65 pCi/g !( Uranium Total > 65 pCi/g
Monitoring Well Location !A U-Total < 30 ug/l !A U-Total > 30 ug/l
1946 Drainage Ditch Current Drainage Ditch Former Building
AOC 1
Excavation Extent Contours Uranium Total > 65 pCi/g
Extent of Excavation 4 ft. bgs 8 ft. bgs 12 ft bgs
Contour Groundwater Isopleth (U-Total)
Figure 4-5
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Mass Balance Evaluation AOC 1
Cabrera Services, Inc 1106 N. Charles St
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2-MW-03
(B - Aquifer) Uranium Total 29560 ug/l 2-MW-05
(B - Aquifer) Uranium Total 167 ug/l
2-MW-12
(A - Aquifer) Uranium Total 163 ug/l
2-MW-15
(A - Aquifer) Uranium Total 331 ug/l
2-MW-02
(A - Aquifer) Uranium Total 14027 ug/l
30 ug/l
100 ug/l
1,000 ug/l
1,000 ug/l
1 ug/l
Soil Cutlines Area (Sq. Ft.) = 39,029 Circumference (Ft.) = 967
Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Inside 1 ug/l = 35,911 Inside 30 ug/l = 23,682 Inside 100 ug/l = 15,889 Inside 1,000 ug/l = 1,551 Between 30-100 = 7,793 Between 100-1,000 = 14,338
Post Excavation Groundwater Plume (A-Aquifer) Area (Sq. Ft.)
Between 1-30 ug/l = 7,783 Between 30-100 ug/l = 3,638 Between 100-500 = 2,941 Total Area = 14,362 p
0 40 8020
Scale (feet)
Legend Sample Station Location !( Uranium Total < 65 pCi/g !( Uranium Total > 65 pCi/g
Monitoring Well Location !A U-Total < 30 ug/l !A U-Total > 30 ug/l
1946 Drainage Ditch Current Drainage Ditch Former Building
AOC 2
Excavation Extent Contours Uranium Total > 65 pCi/g
Extent of Excavation 4 ft. bgs 8 ft. bgs 12 ft bgs
Contour Groundwater Isopleth (U-Total)
Figure 4-6
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Mass Balance Evaluation AOC 2
Cabrera Services, Inc 1106 N. Charles St
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1 ug/l
30 ug/l 100 ug/l
Post Excavation Groundwater Plume (B-Aquifer) Area (Sq. Ft.)
Between 1-30 ug/l = 5,245 Between 30-100 ug/l = 207 Inside 100 = 75 Total Area = 5,527
Groundwater Plume (B-Aquifer) Area (Sq. Ft.)
Between 1-30 ug/l = 8,624 Between 30-100 ug/l = 1,661 Inside 100 ug/l = 1,273 Total Area = 11,558
Soil Cutlines Area (Sq. Ft.) = 12,182 Circumference (Ft.) = 402
Soil Cutlines Area (Sq. Ft.) = 7,757 Circumference (Ft.) = 352
6-MW-01
(B - Aquifer) Uranium Total 509 ug/l p
0 40 8020
Scale (feet)
Legend Sample Station Location !( Uranium Total < 65 pCi/g !( Uranium Total > 65 pCi/g
Monitoring Well Location !A U-Total < 30 ug/l !A U-Total > 30 ug/l
1946 Drainage Ditch Current Drainage Ditch Former Building
AOC 6
Excavation Extent Contours Uranium Total > 65 pCi/g
Extent of Excavation 4 ft. bgs 8 ft. bgs 12 ft bgs
Contour Groundwater Isopleth (U-Total)
Figure 4-7
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Mass Balance Evaluation AOC 6
Cabrera Services, Inc 1106 N. Charles St
AOC 1
Railroad Tracks
AOC 2
A = "A" Aquifer remediation well (3) B = "B" Aquifer remediation well (1) GW = Location of GW Treatment System (Note: Near power and drainage ditch for discharge of treated effluent. Also near roadway, Glycerine St. for truck access).
Can be set up with no conflict with excavation of soil.
A
A
GW B, A
Drainage Ditch
Soil Processing Area
Ion Exchange
Raw Water (From Wells or from Dewatering Excavations)
Sludge/ Spent Filters
Waste Brine (Containing
Uranium) Regenerant*
Treated Water
Solids Removal (Settling or Filtration)
Ion Exchange
Pre-treatment with GAC to remove LNAPL
Spent Canisters
* if disposable ion exchange columns are used, no waste stream will be generated
Figure 4-8
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Conceptual Layout and Process Flow Groundwater Treatment OU 1
Cabrera Services, Inc 1106 N. Charles St
AOC 6
Road
Ditch
Bldg
Bldg
Bldg
AOI 4 AOI 6
6-MW-01BEast Road
Treatment Area
Raw Water (From Wells or from Dewatering Excavations)
Treated Water
Solids/Sludge/ Spent Filters
Waste Brine (Containing
Uranium)
Regenerant*
* if disposable ion exchange columns are used, no waste stream will be generated
Solids Removal (Settling or Filtration)
Ion Exchange
Figure 4-9
U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE - FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Sept 2011
Groundwater Treatment AOC 6
Cabrera Services, Inc.
1106 N. Charles St
OVERALL PROTECTION
OF HUMAN HEALTH
AND THE ENVIRONMENT
COMPLIANCE WITH ARARs
How Alternative Provides Human Health and Environmental Protection Compliance with Chemical-Specific ARARs
Compliance with Action-Specific ARARs Compliance with Location-Specific ARARs Compliance with Other Criteria, Advisories, and Guidances
LONG TERM
EFFECTIVENESS
AND PERMANENCE
REDUCTION OF TOXICITY
MOBILITY, AND VOLUME
THROUGH TREATMENT
SHORT-TERM
EFFECTIVENESS IMPLEMENTABILITY COST
Magnitude of Residual Risk
Adequacy and Reliability of Controls
Treatment Process Used and Materials Treated
Amount of Hazardous Materials Destroyed or Treated Degree of Expected Reductions in Toxicity, Mobility, and Volume Degree to Which Treatment is Irreversible Type and Quanity of Residuals Remaining After Treatment
Protection of Community During Remedial Actions Protection of Workers During Remedial Actions Environmental Impacts Time Until Remedial Action Objectives are Achieved
Ability to Construct and Operate the Technology
Reliability of the Technology
Ease of Undertaking Additional Remedial Actions, if Necessary
Ability to Monitor Effectiveness of Remedy Ability to Obtain Approvals from Other Agencies Coordination with Other Agencies Availabilty of Offsite Treatment, Storage, and Disposal Services and Capacity Availability of Necessary Equipment and Specialist Availability of Prospective Technologies
Capital Costs
Operating and Maintenance Costs
Present Worth Cost
STATE*
ACCEPTANCE
COMMUNITY*
ACCEPTANCE
*Assessed following comment on RI/FS and PP.
Detailed Anaysis Criteria for the Evaluation of Remedial Alternatives Figure 5-1U.S. ARMY CORPS
OF ENGINEERS
FEASIBILITY STUDY
USACE-FUSRAP
DuPont Chambers Works Deepwater, New Jersey
Cabrera Services, Inc 1106 N. Charles St
| Figure 3-1 |
| Figure 3-2 |
| Figure 4-3 |
| Figure 4-4 |
| Figure 4-8 |
| Figure 4-9 |
| Figure 4-10 |
| Figure 4-11 |
| Figure 4-12 |
| Figure 5-1 |
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