Asbestos Survey Report Table 1. Asbestos Inventory Summary Riverbank Army Ammunition Plant Riverbank, CA Ahtna Environmental, Inc. Page 4 of 4 Begin End Asbestos PLM Asbestos Point Count Asbestos Debris? Building No. Name Year Built Area (ft2) Survey Dates Number of Samples Asbestos? Friable? Non- Friable? Damaged ACM? 165 Shed, Former Pesticide Storage 1975 196 6/6/2018 6/6/2018 12 0 Yes No Yes Yes No 166 Paint Pumping Building 1976 480 6/21/2018 6/21/2018 6 0 Yes No Yes No No 168 Security Lighting Emergency Generator 1978 176 6/7/2018 6/7/2018 0 0 Yes No Yes No No 169 Paint Spraying Facility 1978 800 6/8/2018 6/8/2018 12 0 Yes No Yes No No 170 Pesticide Facility 1978 600 6/7/2018 6/7/2018 12 0 Yes No Yes No No 171 Austemper Facility - Furnace Room 1978 5,376 6/12/2018 7/19/2018 33 0 Yes No Yes No No 172 Former Fire Department 1982 3,600 6/26/2018 6/26/2018 74 2 Yes No Yes No No 173 Environmental Test Facility 1982 992 6/7/2018 6/7/2018 51 0 Yes No Yes No No 175 Generator Building 1984 187 6/12/2018 6/12/2018 6 0 Yes No Yes No No 176 Switching Station 1985 90 7/19/2018 7/19/2018 0 0 Yes NA NA NA No 177 Equipment Wash Facility 1985 1,440 6/7/2018 6/7/2018 6 0 No NA NA NA No 178 Lubrication System Facility 1985 389 6/6/2018 6/6/2018 15 0 Yes Yes Yes Yes No 180 Chrome Reduction Facility 1991 576 7/6/2018 7/6/2018 12 0 No NA NA NA No 181 Phosphate Facility 1992 4,000 6/12/2018 6/12/2018 21 0 Yes No Yes No No 182 Groundwater Treatment Facility 1992 10,000 7/11/2018 7/11/2018 33 0 Yes No Yes No No 184 Flammable Storage Warehouse 1992 144 7/19/2018 7/19/2018 6 0 No NA NA NA No 185 Air Compressor Building 1994 104 6/5/2018 6/5/2018 9 0 No NA NA NA No 187 Haz-Bin Storage Containment Structure 1995 172 7/19/2018 7/19/2018 9 0 No NA NA NA No 188 Haz-Bin Storage Containment Structure 1995 172 7/19/2018 7/19/2018 9 0 No NA NA NA No 192 US Army Commander's Representative Office Unknown 968 7/19/2018 7/19/2018 27 0 No NA NA NA No Notes: ft2: square feet PLM: Polarized Light Microscopy ACM: asbestos containing material (asbestos >1.0%) NA: not applicable
Appendix C
Table 1 from LBP Inspection Report: LBP Inventory Summary
Lead Survey Report Table 1. Lead-Based Paint Inventory Summary Riverbank Army Ammunition Plant Riverbank, CA Ahtna Environmental, Inc. Page 1 of 4 Begin End 1 Former Production Line Area 1951 34,201 7/11/2018 7/12/2018 9 Yes Yes 2 Former Production Line Area 1951 34,201 7/12/2018 7/12/2018 9 Yes Yes 3 Former Production Line Area 1951 34,201 7/13/2018 7/13/2018 9 Yes Yes 4 Former Production Line Area 1951 34,201 7/16/2018 7/16/2018 9 Yes Yes 5 Former Production Line Area 1951 34,201 7/13/2018 7/13/2018 10 Yes Yes 6 Former Production Line Area 1951 34,201 7/16/2018 7/16/2018 6 Yes Yes 7 Former Production Line Area 1951 71,622 7/17/2018 7/17/2018 13 Yes Yes 8 Former Production Line Area 1951 48,225 7/17/2018 7/18/2018 13 Yes Yes 9 Machine Shop Offices 1951 37,800 7/3/2018 7/4/2018 16 Yes Yes 10 Crib/Warehouse/Office National Guard 1951 20,338 6/27/2018 6/28/2018 14 Yes Yes 11 Paint & Oil Storage, Recycling & Transport 1951 12,451 7/3/2018 7/4/2018 12 Yes Yes 12 Former Boiler House - Now Tenant Occupied 1951 6,240 6/26/2018 6/26/2018 12 Yes Yes 13 Production Line - Rectifier House 1951 38,000 6/28/2018 6/29/2018 14 Yes Yes 14 Security Office & Locker Rooms 1951 10,888 7/2/2018 7/2/2018 9 Yes Yes 15 Transformer Servicing Facility 1951 3,200 6/27/2018 6/27/2018 7 Yes Yes 16 Office and Gate House 1951 3,740 7/3/2018 7/4/2018 6 Yes Yes 17 Administrative Office 1951 7,308 7/3/2018 7/4/2018 10 Yes Yes 18 Cafeteria and Offices 1951 2,819 7/2/2018 7/2/2018 7 Yes Yes 19 Production Restrooms 1951 501 6/19/2018 6/19/2018 5 Yes No 20 Empty Barrel Storage 1951 14,800 6/5/2018 6/5/2018 1 Yes Yes 21 Plant Cafeteria 1951 6,916 7/9/2018 7/9/2018 10 Yes Yes 22 Aisleway and Office 1951 1,976 6/20/2018 7/9/2018 6 Yes Yes 23 Aisleway and Office 1951 2,652 6/20/2018 6/20/2018 5 Yes Yes 24 Aisleway and Gage Laboratory 1952 1,976 7/9/2018 7/9/2018 8 Yes Yes 25 Aisleway and Accounting Storage Area 1952 2,652 6/13/2018 6/19/2018 5 Yes Yes 26 Aisleway and Instrument Storage Area 1951 1,976 6/18/2018 6/18/2018 10 Yes Yes 27 Restroom and Passage 1951 1,053 7/9/2018 7/9/2018 6 Yes Yes 28 Restroom and Passage 1951 1,053 7/9/2018 7/9/2018 7 Yes Yes 29 Restroom 1951 1,053 6/19/2019 6/19/2019 7 Yes No 30 Restroom and Passage 1951 1,053 6/13/2018 6/20/2018 9 Yes Yes 31 Restroom and Passage 1951 1,053 6/20/2018 6/20/2018 5 Yes Yes 32 Restroom and Passage 1951 1,053 7/5/2018 7/5/2018 7 Yes Yes 33 Passage and Distribution PNL 1951 1,520 6/21/2018 6/21/2018 7 Yes Yes 34 Passage and Office 1952 1,539 7/5/2018 7/6/2018 8 Yes Yes 35 Passage and Emergency Generator #7 1952 1,539 7/5/2018 7/6/2018 8 Yes Yes 36 Passage 1952 1,053 6/21/2018 6/21/2018 7 Yes Yes 37 Passage and Office 1952 1,539 7/5/2018 7/6/2018 8 Yes Yes 38 Passage 1951 1,539 6/21/2018 6/21/2018 7 Yes Yes 39 Central Salvage Area 1952 2,112 7/5/2018 7/6/2018 8 Yes Yes 43 Acid Neutralization/Cyanide Lab 1952 1,558 6/6/2018 6/6/2018 3 Yes Yes Building No. Name Year Built Lead-Based Paint? Damaged? Area (ft2) Survey Dates Number of Lead Bulk Samples
Lead Survey Report Table 1. Lead-Based Paint Inventory Summary Riverbank Army Ammunition Plant Riverbank, CA Ahtna Environmental, Inc. Page 2 of 4 Begin End Building No. Name Year Built Lead-Based Paint? Damaged? Area (ft2) Survey Dates Number of Lead Bulk Samples 44 Acid Neutralization/Cyanide Destruction 1952 12,240 6/7/2018 6/7/2018 4 Yes Yes 45 Production Line 1952 7,293 7/10/2018 7/18/2018 6 Yes Yes 46 Production Line 1952 8,200 7/10/2018 7/18/2018 7 Yes Yes 47 Production Line and Emergency Gen #2 1952 8,360 7/10/2018 7/18/2018 9 Yes Yes 48 Production Line and Office 1952 8,400 7/10/2018 7/18/2018 6 Yes Yes 49 Production Line and Emergency Gen #4/5 1952 10,548 7/11/2018 7/18/2018 10 Yes Yes 50 Production Line and Emergency Gen #6 1952 10,420 7/11/2018 7/18/2018 6 Yes Yes 51 Laboratory Chemical and Metallurgical 1952 3,800 6/19/2018 6/19/2018 9 Yes Yes 52 Transformer Area - Substation #10 1951 700 6/4/2018 6/4/2018 0 Yes Yes 53 Transformer Area - Substation #5 1952 1,200 6/4/2018 6/4/2018 0 Yes Yes 54 Transformer Area - Substation #13 1952 1,200 6/4/2018 6/4/2018 0 Yes Yes 55 Transformer Area - Substation #9 1952 1,868 6/4/2018 6/4/2018 0 Yes No 56 Transformer Area - Substation #7 1952 600 6/4/2018 6/4/2018 0 Yes No 57 Transformer Area - Substation #12 1952 600 6/4/2018 6/4/2018 0 Yes No 58 Transformer Area - Substation #8 1952 600 6/5/2018 6/5/2018 0 Yes Yes 59 Transformer Area - Substation #6 1952 600 6/5/2018 6/5/2018 0 Yes Yes 60 Transformer Area - Substation #11 1952 564 7/10/2018 7/10/2018 0 Yes No 61 Cooling Tower Control House 1952 300 6/11/2018 6/18/2018 4 Yes Yes 73 Tuff Shed Unknown 455 7/19/2018 7/19/2018 3 No NA 74 Compressor House, Propane Storage Area 1951 1,240 6/8/2018 6/8/2018 3 No NA 75 Propane Storage Area 1952 83,400 6/8/2018 6/8/2018 2 Yes Yes 76 Fuel Oil Storage Area, Water Tanks (2) 1951 1,600 6/5/2018 6/5/2018 4 No NA 77 Sulfuric Acid and Caustic Soda Storage 1952 1,591 6/6/2018 6/6/2018 0 No NA 78 Oil Room Building 1951 1,100 6/20/2018 6/20/2018 6 Yes Yes 79 Scale House 1952 66 6/25/2018 6/25/2018 3 Yes Yes 80 Varnish Stripping Building 1953 2,211 7/5/2018 7/5/2018 10 Yes Yes 81 Production Line 1953 11,001 7/10/2018 7/10/2018 9 Yes Yes 82 Tocco Generator & Emergency Gen #9 1953 1,638 7/10/2018 7/19/2018 7 Yes Yes 83 Plating Rack Repair Area 1951 714 6/13/2018 6/13/2018 5 Yes Yes 84 Loading Dock with Canopy 1951 764 7/5/2018 7/6/2018 3 Yes Yes 85 Transformer Oil Pump Building 1951 169 6/6/2018 6/6/2018 2 Yes Yes 87 Storage Building 1951 270 6/28/2018 6/28/2018 1 Yes Yes 95 Transformer Area - Substation #1 1951 280 6/4/2018 6/4/2018 0 Yes No 96 Transformer Area - Substation #2 1952 540 6/4/2018 6/4/2018 0 Yes Yes 97 Transformer Area - Substation #3 1952 1,050 6/4/2018 6/4/2018 0 Yes No 98 Transformer Area - Substation #4 1953 400 6/5/2018 6/5/2018 0 Yes Yes 99 Transformer Area - Substation #14 1953 600 6/4/2018 6/4/2018 0 Yes No 100 Transformer Area - Substation #15 1952 600 6/5/2018 6/5/2018 0 No NA 101 Transformer Area - Substation Spare 1953 600 6/4/2018 6/4/2018 0 Yes Yes 102 Water Well #1 1951 64 6/6/2018 6/6/2018 5 Yes Yes
Lead Survey Report Table 1. Lead-Based Paint Inventory Summary Riverbank Army Ammunition Plant Riverbank, CA Ahtna Environmental, Inc. Page 3 of 4 Begin End Building No. Name Year Built Lead-Based Paint? Damaged? Area (ft2) Survey Dates Number of Lead Bulk Samples 106 Water Well #5 1951 199 6/8/2018 6/8/2018 5 Yes Yes 107 Covered Passage 1951 178 7/6/2018 7/6/2018 9 Yes Yes 108 Main Transformer Substation #1 1951 8,050 6/4/2018 6/4/2018 0 Yes Yes 109 Main Transformer Substation #2 and 3 1951 9,650 6/4/2018 6/4/2018 0 No NA 109A Transformer Substation Unknown 900 6/4/2018 6/4/2018 0 No NA 110 Terminal House 1951 270 6/4/2018 6/4/2018 0 Yes Yes 114 Tank Water Storage 100,000 Gallons 1951 NA 6/6/2018 6/6/2018 1 Yes Yes 117 Cooling Tower, Main Plant 1952 NA 6/11/2018 6/11/2018 0 No NA 120 Former Steam Plant & Emergency Generator #10 1953 58,066 6/25/2018 6/25/2018 19 Yes Yes 120H Addition to Building 120 2006 28,000 6/22/2018 6/22/2018 7 No NA 121 Loading Dock, Steel Plant 1953 420 6/25/2018 6/25/2018 2 Yes Yes 122 Crane Runway and Steel Storage Area 1953 18,332 6/25/2018 6/25/2018 3 No NA 125 Unloading Station No. 1 Propane 1951 8 6/8/2018 6/8/2018 4 Yes Yes 126 Unloading Station No. 2 Propane 1951 48 6/8/2018 6/8/2018 4 Yes Yes 127 Storage Sewage Disposal Plant 1951 160 7/19/2018 7/19/2018 1 No NA 130 Garage 1954 2,280 6/27/2018 6/25/2018 4 Yes Yes 131 Process Water Tank & System 1953 441 6/12/2018 6/12/2018 4 Yes Yes 133 Aisleway from Building 10 to Line 7 1951 183 6/27/2018 6/28/2018 10 Yes Yes 134 Restroom at Line 7 1953 82 7/6/2018 7/6/2018 5 Yes No 135 Storm Drain Station 1953 108 6/7/2018 6/7/2018 3 Yes Yes 137 Pump House - Sprinkler System 1956 400 6/11/2018 6/11/2018 3 Yes Yes 138 Transformer Substation No. 16 1956 120 6/7/2018 6/7/2018 0 Yes No 139 Tank Water Storage 1,000,000 Gallons 1952 2,739 6/11/2018 6/11/2018 4 Yes Yes 145 Transformer Substation #17 1967 1,321 6/4/2018 6/4/2018 0 Yes Yes 146 Transformer Substation #18 1967 406 6/4/2018 6/4/2018 0 Yes Yes 147 Transformer Substation #19 1967 960 6/13/2018 7/19/2018 4 Yes Yes 148 Cooling Tower Building 13 1966 368 6/6/2018 6/6/2018 4 Yes Yes 150 Compressor Air 1969 150 6/6/2018 6/6/2018 3 Yes Yes 151 Compressor Air 1969 150 6/28/2018 6/28/2018 4 Yes Yes 152 Motor Generator Housing 1967 636 6/28/2018 6/28/2018 4 Yes Yes 154 Compressor Air 1969 168 6/13/2018 6/13/2018 4 Yes No 155 Compressor Air 1969 150 6/11/2018 6/11/2018 3 Yes No 156 Production Building - Heat Treat 1970 5,286 6/18/2018 6/18/2018 10 Yes Yes 157 Compressor Air 1969 725 6/12/2018 6/12/2018 6 Yes Yes 158 Water Well #6 1969 240 6/11/2018 6/11/2016 4 Yes No 159 Sandblast Building 1972 144 6/5/2018 6/5/2018 0 No NA 160 Covered Storage Building 1969 21,033 7/16/2018 7/16/2018 5 Yes Yes 162 Autodin A.B. Terminal Building 1971 1,036 6/12/2018 6/12/2018 3 Yes Yes 163 Incinerator 1971 27 6/6/2018 6/6/2018 1 No NA 164 Paint Pumping Building 1974 506 7/11/2018 7/11/2018 3 No NA
Lead Survey Report Table 1. Lead-Based Paint Inventory Summary Riverbank Army Ammunition Plant Riverbank, CA Ahtna Environmental, Inc. Page 4 of 4 Begin End Building No. Name Year Built Lead-Based Paint? Damaged? Area (ft2) Survey Dates Number of Lead Bulk Samples 165 Shed, Former Pesticide Storage 1975 196 6/6/2018 6/6/2018 2 No NA 166 Paint Pumping Building 1976 480 6/21/2018 6/21/2018 7 Yes Yes 168 Security Lighting Emergency Generator 1978 176 6/7/2018 6/7/2018 5 Yes Yes 169 Paint Spraying Facility 1978 800 6/8/2018 6/8/2018 4 No NA 170 Pesticide Facility 1978 600 6/7/2018 6/7/2018 4 Yes No 171 Austemper Facility - Furnace Room 1978 5,376 6/12/2018 7/19/2018 7 Yes Yes 172 Former Fire Department 1982 3,600 6/26/2018 6/26/2018 5 No NA 173 Environmental Test Facility 1982 992 6/7/2018 6/7/2018 6 Yes No 175 Generator Building 1984 187 6/12/2018 6/12/2018 1 No NA 176 Switching Station 1985 90 7/19/2018 7/19/2018 0 No NA 177 Equipment Wash Facility 1985 1,440 6/7/2018 6/7/2018 0 No NA 178 Lubrication System Facility 1985 389 6/6/2018 6/6/2018 7 Yes No 180 Chrome Reduction Facility 1991 576 7/6/2018 7/6/2018 3 No NA 181 Phosphate Facility 1992 4,000 6/12/2018 6/12/2018 11 Yes Yes 182 Groundwater Treatment Facility 1992 10,000 7/11/2018 7/11/2018 10 Yes No 184 Flammable Storage Warehouse 1992 144 7/19/2018 7/19/2018 1 No NA 185 Air Compressor Building 1994 104 6/5/2018 6/5/2018 2 No NA 187 Haz-Bin Storage Containment Structure 1995 172 7/19/2018 7/19/2018 2 No NA 188 Haz-Bin Storage Containment Structure 1995 172 7/19/2018 7/19/2018 2 No NA 192 US Army Commander's Representative Office Unknown 968 7/19/2018 7/19/2018 3 No NA Notes: ft2: square feet NA: not applicable
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 1 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
AOC 5, Former
Windrowed Area
Contamination in soil
No waste was stored in this area. NFA status concurrence received from DTSC in June 1996 (as detailed in the April 15, 1996, Revision 2 of the RFI Phase 1 Work Plan - CH2M HILL, 2002).
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD1. See RBAAP-03 (ECP Study Section 3) for updates.
North Utilities
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plui me; however, the
groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
RBAAP04/SWMU12,
IWTP Effluent
Sewer Line Break
Contamination in soils 1994 ROD documented NFA required. DTSC concurred with NFA status (October 30, 1995, version of the RFI Phase 1 Work Plan) and ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
42 Sanitary
Wastewater
Settling
Ponds/Sludge
Beds (RBAAP10/SWMU 22)
Contamination in soil
Sampling completed in 1991. The site wide ROD (USAEC, 1994) documented NFA for this site. Based on concerns raised about potential data gaps, the Army is evaluating additional investigation at this site.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 2 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
42 Building 42,
Sewage Disposal
Plant
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however. the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
West Open
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Open Land
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Open Land No contamination No known releases.
North Railroad
area
No contamination No known releases.
Open Space
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Open Space
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is above the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Percolation/Evapo
ration Ponds (E/P
PCBs, Metals and TPH
in soil
The ROD documented zinc-contaminated soil. This removal action and concluded that no further action was necessary at the ponds (USAEC, 1994).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 3 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Ponds) (RBAAP11/ SWMU 23)This area continues to be used for discharge of treated water related to RBAAP-03 and is regulated under WDRs. The WDRs require ongoing groundwater monitoring at the E/P Ponds. See RBAAP-03 (ECP Study Section 3) for updates.
This site was investigated for PCBs in the Galbestos investigation. None of the sediment samples in the E/P ponds contained PCBs exceeding the TSCA criteria (USACE, 2011).
In 2019 a risk assessment was finalized to document that there is no risk to human health, but the regulatory agencies have raised additional concerns. A screening level ecological risk assessment is planned for FY26.
AOC 10, Former
Solid Waste Pile
(Southeast
Corner)
PCBs in soil Investigations determined PCB contamination was present in the soil in this area.
PCB soil remediation actions are completed. Awaiting final documentation.
South Open
Storage PCBs in soil Investigations determined PCB contamination was present in the soil.
PCB soil remediation actions are completed. Awaiting final documentation.
South Parking
(Remainder of
Parcel 1)
PCBs in soil Investigations determined PCB contamination was present in the soil.
PCB soil remediation actions are completed. Awaiting final documentation.
South Parking PCBs in soil Investigations determined PCB contamination was present in the soil.
PCB soil remediation actions are completed. Awaiting final documentation.
South Parking
(remainder of
Parcel 1A)
PCBs in soil Investigations determined PCB contamination was present in the soil.
PCB soil remediation actions are completed. Awaiting final documentation.
Chromium
groundwater
This area is within the chromium contaminated groundwater plume. Data from the 3rd Quarter 2020 and subsequent sampling indicate that the groundwater on the
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 4 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
northeast corner of this parcel is above the ROD action levels. The groundwater contours indicate that groundwater within this parcel is above ROD action levels.
NW of
Railroad
Wood Debris Pile
(Northwest corner
of railroad tracks)
Contamination in soil During the site reconnaissance, a debris pile was observed. The debris appears to be treated railroad ties. Railroad ties were removed from the site.
PCB
Contamination
Area south of
Building 6
PCBs in soils
Due to deteriorated Galbestos panels, the soils to the area south of Building 6 was found to have elevated PCBs within the soil. A TCRA was completed and approved in 2018. The removal actions were completed in 2017.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Plastic Waste
South of Building
6 PCB in waste
A large stockpile of plastic waste has been stored south of Building 6 on a concrete slab. The plastic was characterized and properly disposed of in 2023. Sampling of the concrete below the waste indicated the risk are below RSLs. This area will be closed out in the planned Parcel A ROD.
Landfill
RBAAP-01,
Landfill
SWMU 10, Landfill
(Southern Portion)
SWMU 11, Landfill
(Northern Portion)
Cyanide and chromium
groundwater
contamination
The landfill was investigated during the RI/FS (completed in 1993). The RI concluded that it was a major source of cyanide and a minor source of chromium contamination to the groundwater. The landfill underwent formal closure in 1996 and received formal “Construction Complete” certification on October 30, 1995.
There are land use controls in place to maintain the cap and conduct groundwater monitoring as required by the 1994 site-wide ROD.
Groundwater continues to be monitored. All cyanide results are below ROD levels but lowered hexavalent chromium levels and some total chromium levels are above MCLs in the northern portion of the landfill at MW-65 and 124 A’.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 5 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
161
RBAAP-02, Waste
Salt Disposal Pit
(Located near
Building 161)
Contamination in soil NFA determination documented in 1994 Site Wide ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
RBAAP-03,
Groundwater
Contamination
Chromium
groundwater
contamination
ROD signed in 1994 developed the remedial goals for this groundwater contamination.
This remains a Category 5 due to the ongoing pump and treat system, and as well the in-situ injections. Groundwater monitoring wells have been abandoned in accordance with the approved groundwater plan from 2017. The rebound study began in April 2020. The tracer study began in 2021 and continues along with groundwater monitoring. Additional in-situ treatment activities are underway. 13 RBAAP-05 -
Building 13,
Chromium
Pretreatment
RBAAP -07/AOC7 Phosphate Spill
SWMU 5
Chromium
Reduction Unit
(Building 13)
Contaminants in soil
RBAAP-05: NFA status documented in site wide ROD.
RBAAP-07/AOC-7: NFA status documented in letter from DTSC dated June 5, 1996, and is detailed in the April 15, 1996, Revision 2 of the RFI phase I Work Plan. PA/SI completed for this area in May 2018. No further action.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
ECP Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 6 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
RBAAP-06, IWTP
H2SO4 Spill
Sulfuric Acid in soil
This spill was given NFA Status based on investigative results. Documented in closure certifications.
The locations within SWMU 1 boundary. The required remediation actions at SWMU 1 (IWTP) were completed in 2015.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going but levels in the area are no longer above the MCL. See RBAAP-03 for updates. 135
RBAAP-08/
SWMU 21
Southeast Storm
Reservoir and
Storm drain basin
Chromium and cyanide
in soils NFA status of chromium and cyanide in soils documented in 1994 Site Wide ROD.
PCBs in soils
This area collects storm water runoff from the facility. After soils and storm water conveyance system was cleaned, this area was sampled and remediated as necessary and in accordance with the TCRA. Pending final documentation. 135 AOC 16,
Substation 5
PCBs in soil
Soil contaminated with PCBs (Arochlor-1260) at concentrations greater than IPRGs has been successfully removed from the gravel and soil areas surrounding Substation 5 and the storm water discharge basin. Confirmation samples collected in 2003 from the excavation were non-detect. Excavated soils were disposed of properly. A ROD to properly document these actions and decisions will be completed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
127 RBAAP-09,
Northwest Storm
Chromium and cyanide
in soils NFA documented in 1994 Site Wide ROD.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 7 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Reservoir/ SWMU
20, Northwest
Storm Reservoir PCBs in soils
This area collects storm water runoff from the facility. After soils and storm water conveyance system is cleaned, the area was remediated under a TCRA and impacted soils removed.
RBAAP-001-R-01,
Former Pistol
Range
Metals in soil NFA based on the results of the 2008 SI changed to Category 1. The area was remediated under a TCRA and impacted soils removed.
PCBs in soils
This area is adjacent to the storm water reservoir ponds which collected runoff from the facility. After soils and storm water conveyance system was cleaned, this area was sampled and remediated as necessary and in accordance with the TCRA.
IWTP Area
SWMU 1,
Industrial
Wastewater
Treatment Plant
(IWTP)
SWMU 4
SWMU 7
SWMU 8
SWMU 19
RCRA Permit Closure Originally, Category 7 based on location within SWMU 1 boundary. The required remediation actions at SWMU 1 (IWTP) were completed in 2015/2016. Closure granted from DTSC in August 2016. See closure reports.
Galbestos Panels Building 43 was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded Chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
174
SWMU 2,
Hazardous Waste
Storage Area
(Drum Storage
Facility)
RCRA Permit Closure
Site is the subject of the Closure Certification Report Hazardous Waste Management Unit #3 Chromium Reduction Unit – Batch Process RCRA Hazardous Waste Facility Permit Closure, RBAAP, 2013. Required actions completed in 2015/2016. DTSC granted closure in August 2016.
Chromium
groundwater
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going but are no longer above the MCL. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 8 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
20 SWMU 3, Empty
Drum Storage
Area (Railroad Car
Off-Loading Area)
VOCs and metals in
soil
Investigated during RI as potential source area. Soil and soil gas samples collected.
No metals above background in soil samples. Soil gas results area unlikely source of VOC contamination. NFA documented in 1994 site wide ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past but are no longer above the MCL. Groundwater remediation is on-going. See RBAAP-03 for updates.
1 SWMU 6,
Chromium
Reduction Unit
(Building 1)
RCRA permit closure Site closed under RCRA permit. See closure reports. NFA.
Galbestos Panels Building 1 was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
177
SWMU 9,
Equipment Wash
Facility (Building
177 Triple Rinse
Area)
RCRA permit closure Site closed under RCRA permit. See closure reports. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
123 Contamination in soils No reported releases. PA/SI completed for this area in May 2018. NFA.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 9 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
SWMU 13,
Incinerator
(Building 123)
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
163
SWMU 14,
Incinerator
(Building 163)/
Incinerator
Contamination in soils No reported releases. PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
11 SWMU 15,
Pesticide Storage
Area (West of
Building 11)
Pesticides in soils PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
165
SWMU 16,
Pesticide Storage
Area (Building
165)
Pesticides in soils Samples previously collected indicate that no contamination was detected above residential levels. PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
170 SWMU 17,
Pesticide Storage
Pesticides in soils
Concrete sump removed and chlordane contaminated soil remediated in 1994 with Stanislaus County Environmental Resources Department oversight. A ROD to properly document these actions and decisions will be completed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 10 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Area (Building
170) Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
N/A
SWMU 24,
Industrial Waste
Pipe Leak
Contamination in soils
Soil excavated to repair the IWPT pipe leak was disposed of offsite. Site investigated as part of the 1991 RI; no contamination detected. Documented in Site Wide 1994 NFA ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 1, 2, 3, 4,
5, 6, 7, 12,
15, 77,
137, 170
SWMU 25, Former
Underground
Storage Tanks 1,
6, 11A, 12, 12A,
12B, 15A, 15B,
22, 23, 24, 25, 26,
27, 28, 29, 30, 31,
32, 33, 36, 37,
T77, T137
UST abandonment Tanks 11A, 24, 25, 26, 27, 28, 29, 30, 31, and 32 were removed or closed in-place.
NFA status based on closures.
Galbestos Panels Buildings 1, 2, 3, 4, 5, 6, 7, 12 and 15 was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
4 AOC 1, Mortar
Line Accumulation
Area (Building 4)
Contamination in soil After closure of unit, the concrete pad that it was on was in good condition. No sampling required. PA/SI completed for this area in May 2018. NFA.
Galbestos Panels Building 4 was identified to have Galbestos panels. The panels have been removed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 11 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 9 AOC 2, Machine
Shop
Accumulation
Area (Building 9)
Contamination in soil After closure of unit, the concrete pad that it was on was in good condition. No sampling required. PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
15 AOC 3, Vehicle
Maintenance
Accumulation
Area (Building 15)
Contamination in soil After closure of unit, the concrete pad that it was on was in good condition. No sampling required. PA/SI completed for this area in May 2018. NFA.
Galbestos Panels Building 15 was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
N/A
AOC 4, Grenade
Line Accumulation
Area
Contamination in soil After closure of unit, the concrete pad that it was on was in good condition. No sampling required. PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 12 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
75 AOC 8A,
Horizontal
Aboveground
Storage Tanks -
Propane Storage
Tanks
Propane in soils ASTs were not used for waste. Only propane was stored within the tanks. No further action required.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
85 AOC 8B,
Horizontal
Aboveground
Storage Tanks -
Transformer Oil
Storage Tanks
(including the
Transformer Oil
Distribution
System)
PCBs in soil
ASTs were cleaned and removed. The lines were drained, cleaned and capped (filled with a cement slurry). Known releases. A ROD to properly document these actions and decisions will be completed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 76 AOC 9A, Vertical
Aboveground
Storage Tanks –
Fuel Oil Storage
Tanks
AST Removal
ASTs were removed. Prior to removal, the tanks were cleaned and visually inspected. The tanks showed no signs on leaks. NFA status based on investigation results.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
139 AOC 9B, Vertical
Aboveground
Storage Tanks -
No releases No release or disposal of hazardous substances or petroleum products has occurred.
Does not fall within the area of groundwater contamination.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 13 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Fire Sprinkler
Storage Tank
125, 126
AOC 11A, Loading
Racks – Propane
Farm
Loading/Unloading
Propane in soil
NFA because the physical characteristics of propane would cause it to vaporize if there were a release. There is no potential for soil or groundwater to be contaminated.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
137
AOC 11B, Loading
Racks – Fire
Sprinkler Pumping
Station
POL in soil Category 2 based on small lens of petroleum contaminated soil remaining beneath Building 137, associated with UST T137.
Prod. Area
and IWTP
AOC 12, Industrial
Wastewater
Collection System
Contamination in soil
Soil investigations involving collection of soil samples from within and adjacent to the sumps and trenches associated with production lines 2, 3, 4 and 5 were completed in accordance with DTSC-approved work plans. Soil samples were collected from both the production line trenches and sumps. The investigations did not identify contaminants at elevated concentrations in the soil samples. A ROD to properly document these actions is in production.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
178
AOC 13, Draw
Lube System
(Building 178)
POL in soils
In March 1993, during layaway activities in Building 13, contamination was discovered on the south side of Building 178. Thirteen soil samples were collected and elevated oil and grease concentrations were detected at two locations. Soil excavation took place to remove the contamination, an area 6-feet wide by 16-feet
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 14 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
long was excavated immediately adjacent to Building 178. A ROD to properly document these actions and decisions is in development.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded Chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Prod. Area
and IWTP
AOC 14, ZincCyanide
Wastewater
Collection System
Cyanide in soils
Soil samples previously collected below and near sump 6-11 at depths of 11 to 13 feet did not identify elevated cyanide contaminant concentrations. The soil investigation completed for the portions of the cyanide wastewater collection system near production lines 2 through 5 did not identify any significant elevated concentrations. A ROD to properly document these actions and decisions is in development.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
13 AOC 15, Building
13 Temporary
Wastewater Line
Temporary wastewater
line
The temporary wastewater line was removed from Building 13 and is capped outside the building. There is no documentation of any spills or releases associated with this unit. PA/SI completed for this area in May 2018. NFA.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 1 Production Line PCBs in soils
An ESCA was executed to investigate and remove PCBs and Galbestos in the main production buildings located in Parcel A. Remedial actions will be delineated in the forthcoming ROD for Parcel A.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 15 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates
2 Production Line
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
3 Central and
Eastern portion of
Production Line 3
Sumps: 3-1, 3-2,
3-3, 3-6, 3-7, 3-8,
3-9, 3-10, 3-11
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
3 Western portion of
Production Line 3
Sumps: 3-1, 3-2,
3-3, 3-6, 3-7, 3-8,
3-9, 3-10, 3-11
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the western area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 16 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
4 Central and
Eastern portion of
Production Line 4
Sumps: 4-1, 4-2,
4-3, 4-4, 4-5, 4-6,
4-7, 4-8, 4-9, 4-10,
4-11
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
4 Western Portion of
Production Line 4
Sumps: 4-1, 4-2,
4-3, 4-4, 4-5, 4-6,
4-7, 4-8, 4-9, 4-10,
4-11
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the western area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 5 Central and
Eastern portion of
Production Line 5
Sumps: 5-1, 5-2,
5-3, 5-5, 5-6, 5-8,
5-10, 5-11
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
5 Western portion of
Production Line 5 Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 17 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Sumps: 5-1, 5-2,
5-3, 5-5, 5-6, 5-8,
5-10, 5-11
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the western area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 6 Production Line
PCBs in soil
An ESCA was executed to investigate and remove PCBs and Galbestos in the main production buildings located in Parcel A. Remedial actions will be delineated in the forthcoming ROD for Parcel A.
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Groundwater contamination within the western area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation ongoing. See updates related to RBAAP-03 (ECP study Section 3). 6 Building 6: Zinc
Plater Cyanide
Sump
PCBs in soil
An ESCA was executed to investigate and remove PCBs and Galbestos in the main production buildings located in Parcel A. Remedial actions will be delineated in the forthcoming ROD for Parcel A.
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Groundwater contamination within the western area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation ongoing. See updates related to RBAAP-03 (ECP study Section 3). 7 Building 7: Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 18 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Production Line Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
8 Building 8:
Production Line –
Press Room
Production Line
Sump
4500 Ton Press
Pit (Building 8)
PCBs in soil
An ESCA was executed to investigate and remove PCBs and Galbestos in the main production buildings located in Parcel A. Remedial actions will be delineated in the forthcoming ROD for Parcel A.
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
9 Building 9 -
05Machine
Shop/Offices
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
10 Crib/Warehouse/O
ffices, Former
National Guard
TPH in soil
Samples were collected in 2018 (FOSET Data gap Report). The maximum result for TPH-diesel was 5.7 mg/kg, and the maximum result for TPH as motor oil was 38 mg/kg. All results were below commercial/industrial worker risk screening levels of 600 mg/kg (diesel) and 2,200 mg/kg (motor oil). No action is recommended for this area. Documentation is pending.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 19 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
11 Paint and Oil
Storage, Oil
Recycling and
Transport See
EBS 1998
(Building 11)
PCBs and TPH in soils
Was originally Category 7 based on soil samples that identified Aroclor-1260 at concentrations ranging from 0.4 mg/kg to 1 mg/kg (above the Industrial PRG of 0.74 mg/kg).
Samples were completed in 2018 (FOSET Data gap). There was one area with the PCB concentrations above 1 mg/kg (7.4 mg/kg PCBs). The TPH sample results were less than the commercial/industrial worker risk levels. The recommendation for this area is to excavate soil that has PCB concentrations above 1 mg/kg that is not covered by hardscape. It is recommended to put a land use control on the areas that exceed 1 mg/kg but are currently under hardscape or near railroad tracks. The Uniform Federal Policy QAPP was approved in June 2020 (Weston, 2020). Removal action completed in 2020, and pending final documentation.
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
12 Boiler House TPH, Metals and PCBs
in soil
Was previously Category 7 based on soil samples that identified chromium in one sample at a concentration of 144 mg/kg (above the industrial PRG of 64 mg/kg).
Samples were collected in 2018 (FOSET Data gap Report). One sample for TPH as diesel exceed the screening criteria, and the averages do not exceed the screening levels. PCBs within this area are above 1 mg/kg PCBs (maximum is 5.2 mg/kg) in two locations (Sample locations B012S02 and B012S04). The average for metals within the soil does not exceed the risk-based screening levels. The recommendation is to excavate the area with PCB contamination above 1 mg/kg PCBs (near sample B012S02), and to place a land use restriction on the area near B012S04 due to the impracticability of excavating the contaminated soil. The
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 20 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Uniform Federal Policy QAPP was approved in June 2020 (Weston, 2020). Removal action completed in 2020, and pending final documentation.
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
13 Production Line
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 14 Dispensary/
Locker Rooms,
Security Office
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
16 Offices and Gate
House
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
17 Administrative
Offices
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 21 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
18 Cafeteria and
Offices
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
19 Production
Restrooms
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
21 Plant Cafeteria
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
22 Aisleway and
Office (within Bldg.
160)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
22A
Training Room
(within Bldg. 160)
(between Building
1 and 2)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 22 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
2 and 3
Courtyard
between Buildings
2 and 3
PCB contamination in
concrete
In February 2019, a technical memo detailed all the sampling efforts that have taken place within the courtyard areas. It recommended that concrete with PCB results greater than 0.94 mg/kg PCBs be removed (Weston, 2019. The are six areas that had PCB results above action levels, and they are located between Building 7 and 1, and 1 and 2 need to have concrete removed. This work was integrated into the same work plan as other PCB remediation activities on site. The Uniform Federal Policy QAPP that includes this work was approved in June 2020 (Weston, 2020). It detailed that the areas that needed PCB removal actions would have concrete removed 10 feet by 20 feet, in half inch intervals until the action levels are achieved. The activities were completed in 2020 and are pending final documentation.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
23 Aisle way and
Office
(between Building
3 and 4)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates
24 Aisleway and
Gage Laboratory
(between Building
4 and 5)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 23 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
4 and 5
Courtyard
between Buildings
4 and 5
PCB contamination in
concrete
In February 2019, a technical memo detailed all the sampling efforts that have taken place within the courtyard areas. It recommended that concrete with PCB results greater than 0.94 mg/kg PCBs be removed (Weston, 2019). The are six areas that had PCB results above action levels, and they are located between Building 7 and 1, 2 and 3 and 4 and 5 need to have concrete removed. This work was integrated into the same work plan as other PCB remediation activities on site. The Uniform Federal Policy QAPP that includes this work was approved in June 2020 (Weston, 2020). It detailed that the areas that needed PCB removal actions would have concrete removed 10 feet by 20 feet, in half inch intervals until the action levels are achieved.
The activities were completed in 2020 and are pending final documentation.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
25 Aisleway and
Acctg Storage
Area
(between Building
5 and 6)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
26 Aisleway and
Instrument
Storage Area
(South of Building
6)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 24 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
27 Restroom and
Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
28 Restroom and
Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
29 Restroom
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
30 Restroom and
Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 25 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
31 Restroom and
Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
32 Restroom and
Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
33 Passage and
Distribution PNL –
S.S. No. 1
(West passage
between Building
7 and 1)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates
34 Passage and
Office (West
passage between
Buildings 1 and 2)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 26 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
35 Passage and
Emerg. Gen No. 7
(West passage
between Buildings
2 and 3)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
ECP Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 36 Passage
(West passage
between Buildings
3 and 4)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3) 37 Passage and
Office
(West passage
between Buildings
5 and 6)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 38 Passage
(West passage
between Buildings
6 and 7)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 27 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
39 Central Salvage
Area
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 45 Production Line
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
46 Production Line
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
47 Production Line
and Emerg. Gen
No. 2 (Generator
Removed)
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 based on groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation is on-going. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 28 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
48 Production Line
and Office
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
49 Production Line
and Emerg. Gen
No. 4 and 5
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
50 Production Line
and Emerg. Gen
No. 6
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
51 Laboratory,
Chemical and
Metallurgical
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
52 Transformer Area
– Substation No.
10 Chromium
groundwater
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 29 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
53 AOC-16;
Transformer Area
– Substation No. 5
PCBs in soil
Soil contaminated with PCBs (Arochlor-1260) at concentrations greater than IPRGs has been successfully removed from the gravel and soil areas surrounding Substation 5 and the storm water discharge basin. Confirmation samples collected in 2003 from the excavation were non-detect. Excavated soils were disposed of properly. The final RFI recommended NFA for AOC 16b (CH2M HILL 2005a). DTSC concurred by approving the Final RFI Report. ROD to properly capture PCB remediation to be completed. The transformers have been removed from Substation
5. Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
54 Transformer Area
– Substation No.
13 Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
55 Transformer Area
– Substation No. 9
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
56 Transformer Area
– Substation No. 7
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 30 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
57 Transformer Area
– Substation No.
12 Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
58 Transformer Area
– Substation No. 8
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
59 Transformer Area
– Substation No. 6
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
60 Transformer Area
– Substation No.
11 Galbestos Panels The building where this substation is located was identified to have Galbestos panels.
The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
61 Cooling Tower
Control House
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
62 Facilities Eng.
Store House
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 31 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
64 Fuel Oil Unloading
Serv. Bldg.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded Chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
73 Hose Cart House
No. 1, Storage
Contaminants in soil This area is within the boundary of SWMU 1 (IWTP). The required remediation actions at SWMU 1 were completed in 2015/2016.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded Chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
74 Compressor
House, Propane
Storage. Area
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
75 Propane Storage
Area
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
77 Sulfuric Acid and
Caustic Soda
Storage
Contaminants in soil This area is within the boundary of SWMU1. The required remediation actions at SWMU 1 (IWTP) were completed in 2015/2016.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 32 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
78 Oil Room Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
80 Varnish Stripping
Building
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going.
See updates related to RBAAP-03 (ECP study Section 3).
81 Production Line
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
82 Tocco Generator
and Emergency.
Generator No. 9
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
83 Plating Rack
Repair Area Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 33 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going.
See updates related to RBAAP-03 (ECP study Section 3).
84 Loading Dock with
Canopy
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
85 Transformer Oil
Pump Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
87 Storage Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
95 Transformer Area
– Substation No. 1
PCBs in soil
This area was excluded from further sampling, as this area is an active outdoor electrical substation. The area is fenced, secured and marked. Previous soil sample results from 2008 had a maximum concentration of 0.26 mg/kg PCBs. These levels are below any action level. The area will remain secured and marked (Weston, 2018d). The recommendation is to leave this area as an electrical substation and maintain the area as such. This recommendation is pending regulatory concurrence.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 34 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
96 Transformer Area
– Substation No. 2
PCBs in soil
During the site reconnaissance, western transformer was within this Substation was found to be leaking (weapage). The PCB concentration of the leaking transformer was 3.6 mg/kg PCBs. The transformer was taken offline and the area remediated.
Remedial actions will be delineated in the forthcoming ROD for Parcel A.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates
97 Transformer Area
– Substation No. 3
TPH and PCBs in soil
Category 6 based on potential for PCBs to have impacted the soil adjacent from two transformers (PCB concentrations of 64 mg/kg and 33 mg/kg).
As part of the FOSET Data gap report effort, this area underwent further PCB and TPH analysis to determine the extent of contamination. The maximum concentration for TPH as diesel was 6,600 mg/kg. The PCB concentrations in both the soil and concrete transformer pad were above 1 mg/kg PCBs. This transformer is inactive, and due to the PCB levels above 1 mg/kg PCBs, it was recommended that the remaining equipment be removed, as well as the contaminated soil and concrete pad (Weston, 2018d). The Uniform Federal Policy QAPP was approved in June 2020 (Weston, 2020). Removal action completed in 2020 and is pending final documentation in the Parcel A ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
The groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates 98 Transformer Area
– Substation No. 4
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 35 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
99 Transformer Area
– Substation No.
14 Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
100
Transformer Area
– Substation No.
15 Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
PCBs in soil
PCB contaminated soil was discovered in a May 2020 sampling event. Concrete and soil remediation was completed in 2024, and further action will be included in the Parcel A ROD.
101
Transformer Area
– Substation
Spare
PCBs in soil
In 2018 as part of the FOSET Data gap effort, this area underwent further PCB analysis to determine the extent of PCB contamination. The transformers are no longer present. The concrete was sampled, and the results for PCBs were
6.8 mg/kg. The soil concentrations ranged from 0.074 mg/kg to 1.9 mg/kg PCBs.
Because this area is no longer used and has elevated levels of PCBs, it is recommended that the pad and contaminated soil be removed. The Uniform Federal Policy QAPP was approved in June 2020 (Weston, 2020). Removal action completed in 2020, and further action will be included in the Parcel A ROD.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
The groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates. 102 Water Well No. 1
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 36 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
103 Water Well No. 2
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This is the area of a former potable water well. This well was abandoned.
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
104 Water Well No. 3
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This is the area of a former potable water well. This well was abandoned.
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
105 Water Well No. 4
Well This is the area of a former potable water well. This well was abandoned.
PCBs in soil
Originally Category 4 based on location with AOC 8B.
ASTs were cleaned and removed. The lines were drained, cleaned and capped (filled with a cement slurry). No known releases. A ROD to properly document these actions and decisions will be completed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCL as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 106 Water Well No. 5
PCBs in soils
This area represents a used potable water well.
This is within the area of the PCB- contaminated soils due to deteriorated Galbestos panel. A TCRA was completed and approved in 2018. The removal actions were completed in 2018. Awaiting final documentation.
Chromium
groundwater
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 37 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
107 Covered Passage
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates
108 Main Transformer
Subst. No. 1
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 109 Main Transformer
Subst. No. 2 and 3
PCBs in soil
Originally a Category 7 based on potential for PCBs to have impacted the soil adjacent from two transformers.
Transformers are currently not leaking. Historical dielectric sampling for these transformers indicate that these are non-PCB containing transformers.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
The groundwater contamination within this area currently exceeds chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
110 Terminal House PCBs in soil
Originally a Category 4 because of its location within AOC 8B. ASTs were cleaned and removed. The lines were drained, cleaned and capped (filled with a cement slurry). Known releases. A ROD to properly document these actions will be completed.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 38 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 114
Tank, Water,
Storage, 100,000
Gallons
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
117 Cooling Tower,
Main Plant
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
118 Cooling Tower,
Boiler House
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
119 Cooling Tower,
Steel Plant
Contaminants in soil Originally Category 7 based on location within SWMU 1 boundary. The required remediation actions at SWMU 1 (IWTP) were completed in 2015.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
120
Steel Plant and
Emerg. Gen. No.
10 Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 39 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
121 Loading Dock,
Steel Plant
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
122
Crane Runway
and Steel Storage
Area
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
127 Storage Sewage
Disposal Plant
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
130 Garage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
131 Process Water
Tank and System
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
133 Aisleway from
Bldg. 10 to Line 7
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 40 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
134 Restroom at Line
7 Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
145 Transformer
Substation No. 17
PCBs in Soil
Originally Category 7 based on potential for PCBs to have impacted the soil adjacent from two transformers (PCB concentrations of 28 mg/kg and 134 mg/kg).
This area was excluded from further sampling, as this area is an active outdoor electrical substation. The area is fenced, secured and marked. Previous soil sample results from 2008 had a maximum concentration of 9.5 mg/kg PCBs. Although these results are above RSLs, it is below the TSCA action levels. The area will remain secured and marked (Weston, 2018d).
During the site reconnaissance in 2019 and then confirmed by the RLRA in 2020, one transformer was within this substation was found to be leaking (weapage).
Historical dielectric fluid sampling indicates that easternmost transformer is PCB contaminated, and the other two are non-PCB containing. The transformer pad was double rinse washed. Additional remediation activities will be incorporated into the Final ROD for Parcel A.
This area is now ECP Category 5 due to its proximity to the groundwater contamination plume.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates. 146 Transformer
Substation No. 18
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 41 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
147 Transformer
Substation No. 19
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going.
See updates related to RBAAP-03 (ECP study Section 3).
148 Cooling Tower,
Building 13
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going.
See updates related to RBAAP-03 (ECP study Section 3).
150 Compressor, Air
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
151 Compressor, Air
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
152 Motor Generator
Housing
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
154 Compressor, Air
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 42 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
155 Compressor, Air
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
156
Production
Building – Heat
Treat
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
157 Compressor, Air
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
158 Water Well No. 6
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area represents a used potable water well.
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
159 Sandblast Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
160 Covered Storage
Warehouse
Galbestos Panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 43 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
162
Autodin A.B.
Terminal Bldg. -
Training Rm
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
164 Paint Pumping
Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
166 Paint Pumping
Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
167 Air Compressor
No. 8
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
169 Paint Spraying
Facility
VOCs in soil Samples collected in 2018 (FOSET Data gap): BTEX compounds were found in the results, but all results were below screening levels.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 44 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
13 Austempter
Facility – Furnace
room
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3). 172 Former Fire
Department
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
175 Generator Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
176 Switching Station
(Electrical)
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
177
Equipment Wash
Facility, Sump, Oil
water separator.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. S ee RBAAP-03 for updates.
181 Phosphate Facility
PCBs in soils
This is within the area of the PCB contaminated soils due to deteriorated Galbestos panel. A TCRA was completed and approve in 2018. The removal actions were completed in 2018 and further action will be included in the Parcel A ROD.
Chromium
groundwater
The groundwater within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 45 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
contamination from
IRP Site RBAAP-03
182 Ground Water
Treatment Facility
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
184
Flammable
Storage
Warehouse
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
185 Air Compressor
Building
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
186
Haz-Bin Storage
Containment
Structure
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
187
Haz-Bin Storage
Containment
Structure
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
188
Haz-Bin Storage
Containment
Structure
No contamination No release or disposal of hazardous substances or petroleum products has occurred.
Does not fall within the area of groundwater contamination.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 46 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
189
Land Vehicle Fuel
Disp Sta
Gas/Diesel
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
190 Land Vehicle Fuel
Disp Sta Propane
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
192
Ground Water
Treatment Plant
Office
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
195 Transformer
Substation No. 20
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
196 Transformer
Substation No. 21
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
West Parking
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 47 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
South Parking
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume, and the northwestern portion of this location is within an area that has exceeded chromium MCLs. See RBAAP-03 (ECP Study Section 3) for updates.
West Utilities
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
East Utilities
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Southeast Utilities No contamination No release or disposal of hazardous substances or petroleum products has occurred.
Does not fall within the Area of groundwater contamination.
Southeast Utilities
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
South Utilities
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going.
See updates related to RBAAP-03 (ECP study Section 3).
North Open
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 48 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
Central Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
North Warehouse
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
West Warehouse
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Water Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
South Warehouse
Storage
PCBs in soils
This is within the area of the PCB contaminated soils. The soils are contaminated with PCBs due to deteriorated Galbestos panels. A TCRA was completed and approved in 2018. The removal actions were completed in 2018. Final actions will be included in the forthcoming ROD for Parcel A.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the chromium contaminated groundwater plume; however, the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 49 of 50
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
West Railroad
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within the area of this study section currently exceeds the chromium MCLs as defined by the ROD. Groundwater remediation on-going. See updates related to RBAAP-03 (ECP study Section 3).
East Railroad
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
This area is within the Chromium contaminated groundwater plume, however the groundwater is below the MCLs as defined by the ROD. See RBAAP-03 (ECP Study Section 3) for updates.
Fuel Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Hazardous Waste
Storage
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Administration
Open Area
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Medical Open
Area
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
7 Production Open
Area (courtyard
PCB Contamination in
Concrete In February 2019, a technical memo detailed all the sampling efforts that have taken place within the courtyard areas. It recommended that concrete with PCB results
Lease No. DACA05-1-21-508
Exhibit F-1
Notification of Hazardous Storage, Release, or Disposal 50 of 50
i The Maximum Contaminant Level (MCL) for chromium used in this exhibit is for total chromium as stated in the signed 1994 Record of Decision (ROD). This MCL will be updated for hexavalent chromium in the forthcoming Explanation of Significant Differences (ESD).
Location
(Building or
Feature #)
Site
Name/Identifier
Constituent
(potential and
confirmed)
Remedial actions
area within
Building 7)
greater than 0.94 mg/kg PCBs be removed (Weston, 2019). The are six areas that had PCB results above action levels, and they are located between Building 7 and 1, and 1 and 2 need to have concrete removed. This work was integrated into the same work plan as other PCB remediation activities on site. The Uniform Federal Policy QAPP that includes this work was approved in June 2020 (Weston, 2020). It detailed that the areas that needed PCB removal actions would have concrete removed 10 feet by 20 feet in half-inch intervals until the action levels are achieved. The activities were completed in 2020 and are pending final documentation in the Parcel A ROD.
Galbestos panels This building was identified to have Galbestos panels. The panels have been removed.
Chromium
groundwater
contamination from
IRP Site RBAAP-03
Category 5 because groundwater contamination within this area has exceeded chromium MCLs in the past. Groundwater remediation is on-going. See RBAAP-03 for updates.
Transformer Location
Transformer
Volume (Gallons)
Manufacture
Date
Containing Oil
During Operation
(Yes/No)
Condition
(Good/Poor)
Laboratory Results (mg/L)
(Year Sampled)
Main #1 1,633 Unknown Y G 10 (1996); 14 (2001)*; 18 (2002)* Main #2 1633 Unknown Y G 7 (1996)
Main #3 1633 Unknown Y G 13 (1996)
SUB 1 450 Unknown Y G 125 (1996)
SUB 2 East 450 Unknown Y G 3 (1996)
SUB 2 West 450 Unknown Y P 14 (1996) SUB 2 West leakng.
SUB 4 East 129 Unknown Y G Unknown
SUB 4 Center 129 Unknown Y G Unknown
SUB 4 West 129 Unknown Y G Unknown
SUB 6 600 1986 Y G 50 (2002)*; 44.6 (2016)
SUB 7 680 Unknown Y G Unknown
SUB 8 680 1954 Y G 4.2 (2016)
SUB 9 Unknown Unknown Y G Unknown
SUB 10 680 1954 Y G 7 (2002)*; 5.8 (2016)
SUB 11 unknown unknown Y G Unknown
SUB 12 975 1952 Y G 2.1 (2016)
SUB 13 West 800 1952 Y G 60 (1996); 53 (2002)*
SUB 13 Center 750 1952 Y G 57 (1996); 46 (2002)*
SUB 13 East 750 1952 Y G 443 (1996); 363 (2002)*
SUB 14 West 145 Unknown Y G 3 (1996)
Sub 14 Center 145 Unknown Y G <1 (1996)
Sub14 East 145 Unknown Y G <1 (1996)
SUB 16 210 Unknown Y G 73 (1996)
SUB 17 Center 750 Unknown Y P 44 (1996); 34 (2001)*; 38 (2002)* SUB 17 is leaking.
SUB 17 West 750 Unknown Y P 196 (1996); 163 (2001)*; 187 (2002)* SUB 17 is leaking.
SUB 17 East 750 1952 Y P 50 (1996); 30 (2001)*; 33 (2002)* SUB 17 is leaking.
SUB 18 966 Unknown Y G 5246.5 (2016)
SUB 19 Unknown Unknown Y G Unknown
SUB 20 Not Oil Containing Unknown N G ------
SUB 21 Not Oil Containing Unknown N G ------
SUB 22 536 2004 Y G 3.4 (2016)
SUB 8 12 Unknown Y P Unknown 1 Pothead
SUB 9 12 Unknown Y P Unknown 1 Pothead
SUB 10 12 Unknown Y P Unknown 1 Pothead
SUB 12 12 Unknown Y P Unknown 1 Pothead
Former Sub 15 (Building 1) 12 Unknown Y P Unknown 1 Pothead Building 8 12 Unknown Y P Unknown 1 Pothead
Building 13 12 Unknown Y P Unknown 2-Potheads
Exhibit G-1: Riverbank AAP Transformers and Other PCB-Containing Equipment Comment
Potheads
Lease No. DACA05-1-21-508
Exhibit G-1
11 Units located within
Building 8 100 each (1,100 total) Unknown Y Unknown
Each oil reservoir tank stores approximately 100 gallons of oil. Equipment no longer in use and oil has been drained.
This equipment is stored inside. They will be disposed of offsite.
SUB 3 450, 450 Unknown Y ------ Unknown
SUB 5 1250, 1250, 1250 Unknown Y ------ 24 (2016)
When operational, had three transformers within this
substation. All have been removed.
SUB 15 680, 680 Unknown Y ------ Unknown
Note: The table was taken from the 2019 ECP Update Report. During the 2019 ECP Update, a full inventory of transformers and other electrical equipment was completed.
Sources:
2016 = Applied Power Testing Inspection Lab Sheets
2001 and 2002 *= SD Meyers Inspection Report Data
1996 = Norris Industries Transformer Inpsection Lab data * Source does not have Labsheets. Data came from Lab Inspections from SD Meyers 2005 Transformer Equipment Removed from RBAAP
Oil Reservior Tanks
Property Management Plan
For
Land Use Controls
Riverbank Army Ammunition Plant
Prepared By
Office of the Deputy Assistant Secretary of the Army
Environment, Safety and Occupational Health
Base Realignment and Closure
January 2026
ii
Table of Contents
Acronyms…………… ……………………………………………………………………………..……………………………………iii
1.0 INTRODUCTION................................................................................................................... 1
1.1 PMP Performance Objectives......................................................................................... 1
2.0 SITE NAME, LOCATION AND DESCRIPTION......................................................................... 2
2.1 RBAAP-01: Landfill .......................................................................................................... 3
2.2 RBAAP-03: Contaminated Groundwater ........................................................................ 3
2.3 SWMU 1: IWTP................................................................................................................ 5
2.4 RBAAP 14: Galbestos Panel Removal (and other removal actions) on Parcel A ............ 6
2.5 Parcel 1 and 1A on post PCB remediation ...................................................................... 8
2.6 Evaporation/Percolation Ponds...................................................................................... 8
3.0 RBAAP LAND USE CONTROLS.............................................................................................. 9
3.1 On-Post Land Use Restrictions and Requirements......................................................... 9
4.0 REPORTING ....................................................................................................................... 11
5.0 DOCUMENTATION OF RESTRICTIONS............................................................................... 11
5.1 Signage.......................................................................................................................... 11
5.2 Map of LUC Locations................................................................................................... 12
6.0 ENFORCEMENT ................................................................................................................. 12
7.0 TERMINATION OF LAND USE CONTROLS.......................................................................... 12
8.0 REFERENCES...................................................................................................................... 13 Figures
Figure 1: RBAAP Location
Figure 2: RBAAP Parcels Use Restrictions
Figure 3: General Historic Land Use
Figure 4: RBAAP Landfill Location
Figure 5: Well Location Map (Main Production Area)
Figure 6: Well Location Map (E/P Ponds)
Figure 7: RBAAP Former IWTP Site
iii
Acronyms
µg/L micrograms per liter
BMP Best Management Practice
BRAC Base Realignment and Closure
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CRUP Covenant to Restrict the Use of Property
DTSC Department of Toxic Substances Control
E/P evaporation/percolation
EPA United States Environmental Protection Agency
ESD Explanation of Significant Differences
FFA Federal Facility Agreement
FOSET Finding of Suitability for Early Transfer
GWTP Groundwater Treatment Plant
GWTS Groundwater Treatment System
HWMU Hazardous Waste Management Unit
IC Institutional Control
IRP Installation Restoration Program
IWTP Industrial Wastewater Treatment Plant
LUC Land Use Controls
LUCC LUC Compliance
LUCRD Land Use Control Remedial Design
MCL Maximum Contaminant Limit
mg/kg milligrams/kilogram
NCP National Oil and Hazardous Substances Pollution Contingency Plan NPL National Priorities List
NWSWR Northwest Stormwater Reservoir
PCB polychlorinated biphenyl
PMP Property Management Plan
ppm Part Per Million
QAPP Quality Assurance Project Plan
RBAAP Riverbank Army Ammunition Plant
RCRA Resource Conservation and Recovery Act
RI/FS Remedial Investigation/Feasibility Study
RLRA Riverbank Local Redevelopment Authority
ROD Record of Decision
RWQCB Central Valley Regional Water Quality Control Board SWMU Solid Waste Management Unit
TCRA Time Critical Removal Action
TPH Total Petroleum Hydrocarbons
TSCA Toxic Substance and Control Act
USACE United States Army Corp of Engineers
1 1.0 INTRODUCTION
This Property Management Plan (PMP) for the implementation of Land Use Controls (LUCs) describes the LUCs that apply to activities, site access, and reuse of the former Riverbank Army Ammunition Plant (RBAAP). Some of the LUCs have been or will be selected in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)(42 U.S.C. §9601 et. seq.) site-wide Record of Decision (ROD) (Army, 1994) and Explanation of Significant Differences (ESD) #1 (Army, 2013), for the former RBAAP, and others are selected and incorporated as industry best management practices (BMPs). The 1994 ROD selected individual unit-based LUCs specific to the landfill while also relying on an industrial/commercial reasonably foreseeable reuse without specifying that reuse as LUC component of the final remedy. Subsequent remedial investigations, environmental response actions, and the closure and subsequent leave of the site have necessitated additional LUCs described herein. There is a second ESD (ESD #2) that will be finalized in 2026. The purpose of ESD #2 is to select the reasonably foreseeable reuse of industrial/commercial as a LUC, thus prohibiting residential exposure at the site. In the interim, the LUCs are being documented in Environmental Protection Provisions (EPPS) in the lease documents. The LUCs are specifically related to the following cleanup sites:
• RBAAP-01: Landfill
• RBAAP-03: Contaminated Groundwater
• Solid Waste Management Unit (SWMU)1: Industrial Wastewater Treatment Plant (IWTP) Area
• RBAAP 14: Galbestos Panel Removal (and other Parcel A removal actions) • RBAAP-17: Parcel 1 and 1A on-post removal
The majority of the LUCs specified herein were chosen in accordance with CERCLA and, to the extent practicable, the National Oil and Hazardous Substances Pollution Contingency Plan (NCP)(40 CFR Part 300). The LUCs are intended to be protective of human health and the environment under the current and reasonably anticipated future land use of each site and to prevent unacceptable human health risks from exposure to contaminated soils or groundwater.
1.1 PMP Performance Objectives
The objective of this PMP is the preservation of controls put in place to protect human health and the environment at those sites where contamination remains above levels allowable for unrestricted use. These sites include areas encompassing groundwater contamination resulting from the former IWTP operations, the landfill site, SWMU 1 (IWTP) addressed under the former Resource Conservation and Recovery Act (RCRA) Permit and industrial operation areas where contaminants in soil remain above levels allowing for unrestricted use. The sites will remain subject to CERCLA as long as the contaminants present a threat to human health and the environment. The controls described in this document shall be implemented to achieve the following objectives:
2 • The continued compliance with all terms and conditions of the 1994 ROD, the planned Parcel A ROD, the ESD #1 and future ESD #2, and the Environmental Protection Provisions of the lease in accordance with CERCLA and with the requirements of the former RCRA Permit;
• Ensure that activities at a site or future uses remain in compliance with the restrictions outlined in the implementation plan for that site or environmental media;
• Prevent excavation and construction that would compromise the integrity of any protective structures such as the landfill cap or pavement in the vicinity of the IWTP with the exception of Army and agency authorized activities; • Prohibit the human consumption of groundwater on-post that exceeds Federal Maximum Contaminant Levels (MCLs);
• Provide landowners in the vicinity of the off-post groundwater contamination via Stanislaus County Department of Environmental Resources with annual notifications regarding the status of the cleanup efforts and advised use restrictions; and
• Ensure that routine maintenance activities required to ensure the integrity of the landfill cap and groundwater treatment/monitoring are performed, including inspections and maintenance to prevent damage or unauthorized modifications.
2.0 SITE NAME, LOCATION AND DESCRIPTION
RBAAP is located at 5300 Claus Road, Riverbank, Stanislaus County, California, one mile south of the Stanislaus-San Joaquin County border and approximately five miles northeast of the city of Modesto (Figure 1). Prior to closure, RBAAP occupied a total of 168 acres of land and consists of two noncontiguous areas represented by the main plant area (approximately 139.2 acres) and the Evaporation/Percolation (E/P) ponds. After closure, RBAAP was subdivided into parcels, with the intent of accelerating property transfer as each parcel was prioritized for environmental remediation. The current intent is to transfer the entire RBAAP under a Finding of Suitability of Early Transfer (FOSET), thus negating the need to prioritize the subdivided parcels; however, the parcel identification nomenclature is still used to designate specific LUCs and areas distinct from adjacent parcels. This PMP applies to the Main Plant area, which is Parcels A, 1, 1A, 2 and 2A (including the NW Stormwater Reservoir (NWSWR). See Figure 2 for a map of these parcels and Figure 3 for the historical land use at RBAAP.
Parcel A is approximately 77.68 acres and includes most of the industrial buildings and facilities on RBAAP. The NWSWR is approximately 3.25 acres and receives stormwater from Parcel A. Parcel 1 is 8.46 acres and Parcel 1A is 4.37 acres. Parcels 1 and 1A are south of and adjoining to Parcel A. The parcels were used for employee parking while RBAAP was operational. Parcel 2 is 19.563 acres, has no known releases of hazardous substances or pollutants and contaminants requiring a remedial action, and is mostly open space. Parcel 2 is north of and adjacent to Parcel A and the NWSWR.
3 Parcel 2A is approximately 3.25 acres and is adjacent to the western side of Parcel A. Parcel 2A is leased to the Riverbank Local Redevelopment Authority (RLRA) and is used for the storage of mobile homes and recreational vehicles.
Studies indicated that there was chromium and cyanide in the groundwater above state and federal MCLs under some areas of the property and some down gradient off site areas due to historical industrial activities. This contamination led to RBAAP being placed on the National Priorities List (NPL) on February 21, 1990. In June 1990 a Federal Facility Agreement (FFA) was signed for RBAAP under CERCLA Section 120. The FFA established the framework for CERCLA response actions. In 1994 a site-wide ROD was finalized and signed by the United States Environmental Protection Agency (EPA), California EPA-Department of Toxic Substances Control (DTSC), the California EPA- Central Valley Regional Water Quality Control Board (RWQCB) and the U.S. Army. The ROD established the remedial activities for several environmental sites, discussed below.
The Army published ESD #1 in January 2013 to change the groundwater remedy for chromium in the 1994 ROD to add in situ treatment for chromium to the groundwater remedy.
The FFA Parties plans to finalize ESD #2 to clarify and select LUCs as part of the final remedy and to incorporate the connection to the municipal water system. There are other planned future RODs related to releases, but the LUCs selected in the future RODs will align with ESD #2.
2.1 RBAAP-01: Landfill
RBAAP-01 is approximately 4.5 acres and is located in the northern section of the main plant near the eastern boundary. The landfill location is shown in Figure 4. The landfill was the site of surface and trench disposal and burning from 1942 to 1966. The disposal operations in this area consisted of two discrete disposal trenches and a surface disturbance area. According to records from 1942 to 1966, the landfill at the RBAAP was used for the incineration and disposal of paper, dunnage, oils, grease, solvents, hospital wastes, construction debris, and industrial sludges (Weston, 1991). In 1966, onsite disposal operations were discontinued, and the area was filled with dirt and construction rubble. The Army installed and maintained a clay cap at the landfill as required by the final Site-Wide 1994 ROD. The 20-year maintenance period for the landfill is complete, however, due to the ongoing groundwater treatment and potential ongoing chromium and cyanide source at the landfill, it is recommended that the landfill cover continue to be maintained until no unacceptable risk to human health and the environment is found in the vicinity of the landfill (USACE, 2022).
2.2 RBAAP-03: Contaminated Groundwater
The Installation Restoration Program (IRP) Site RBAAP-03 contains chromium and cyanide groundwater contamination that was initially suspected to result from leakage associated with the original IWTP. The original IWTP at RBAAP was constructed to treat the wastewaters generated from the electroplating, cleaning, and metal finishing processes that operated onsite. The original storage and equalization tanks used for the IWTP were made of redwood.
4 From 1973 to 1980, the IWTP was upgraded and the redwood tanks were replaced with concrete tanks (Weston, 1991).
The original IWTP redwood tank area was initially identified as the major source of chromium contamination. However, results from investigations at the IWTP show that this area is not the source of chromium contamination. High concentrations of chromium or cyanide were not detected in shallow soils in the area, detections from 20 feet to 60 feet were present but not at concentrations that would support the idea that the source area of the groundwater chromium or cyanide contamination was the former redwood tank area. The suspected source of the contamination is the general industrial operations of the plant.
The groundwater contamination was addressed in the site-wide ROD (U.S. Army, 1994).
The ROD required expansion of the interim Groundwater Treatment System (GWTS). The expanded system began operation in 1997 and removes contamination from the extracted water by means of ion exchange. The cleanup goals for chromium and cyanide were established in the ROD and are 50 micrograms per liter (μg/L) and 150 μg/L, respectively. The treated groundwater is discharged to the E/P Ponds under discharge permit 5B50NC00012. The cleanup goals since the 1994 ROD have been updated to reflect current day requirements. The original ROD cited a MCL of 200 μg/L for cyanide, but the California MCL for cyanide has since been reduced to 150 μg/L. Additionally, ESD #2 will memorialize the change of the chromium remedial goal from the prior State MCL of 50 micrograms per liter (µg/L) to the revised State MCL of 10 µg/L for hexavalent chromium.
The Army also conducted an in-situ pilot test of ferrous iron and carbon injection to determine if this could result in an alternative treatment of chromium in the groundwater. The results of the in-situ pilot test demonstrated that reductant injections rapidly reduced dissolved chromium concentrations by precipitating chromium (AGSC, 2009a, 2009b).
In 2013, the Army finalized ESD #1 to conduct in-situ treatment to address chromium in groundwater (U.S. Army, 2013). In 2014, the EPA and DTSC approved a Geochemical Fixation In Situ Treatment Work Plan (AES, 2013). The Central Valley RWQCB issued a Notice of Applicability R5-2008-0149-053 to cover the remedial activities implemented under the work plan. The post-injection data showed that the dissolved and hexavalent chromium concentrations were either non-detect or significantly lower than the starting concentrations at the points of injection (AES, 2016).
In January 2017, EPA and DTSC concurred with Addendum 1 to the In Situ Treatment Work Plan to address the potential source of chromium contamination near the main production facilities on the southern end of the parcel (AES, 2017). The Central Valley RWQCB issued Notice of Applicability R5-2015-0012-031 to cover the remedial activities implemented under the addendum. Army completed the installation of the injection wells in September 2017Initial results indicated that the treatment had lowered dissolved chromium concentrations (AES, 2019). However, subsequent monitoring results suggested that the in-situ Phase I reduction zone at the Building 13 Area had diminished (AES, 2019). The Army completed supplemental
5 injections in accordance with Addendum 2 to the Geochemical Fixation In-Situ Treatment Work Plan (Ahtna Global, LLC [AGL], 2019).
The Army is implementing additional in-situ treatment activities. Although previous phases have shown substantial decreases in dissolved and hexavalent chromium concentrations near the treatment areas; the effects have been localized and additional action is necessary to address the Building 13 Area chromium plume. The field efforts for this work began in November 2025 (Ahtna, 2025).
The Army is implementing a Remedial Investigation/Feasibility Study (RI/FS) related to PFAS releases caused by the Army. The LUCs related to PFAS releases, if required, are anticipated to remain the same as those documented in the EPPs and future ESD #2.
Remedial actions at RBAAP-03 will continue until remedial goals have been reached. The Army will retain responsibility for all remediation activities associated with the groundwater contamination.
Due to groundwater contamination, the proximity of parcels, and out of abundance of caution, groundwater use restrictions have been placed on Parcels A, 1, 1A, 2, 2A and NWSWR.
The site-wide groundwater restriction is required under the future ESD #2. Figure 2 depicts the area of on-post groundwater use restrictions.
The GW remediation and monitoring is on-going, so the LUCs for all parcels include the restriction of any activity that may interfere with the remedial efforts and monitoring systems.
Figure 5 shows the well locations for the Main Production Area and Figure 6 shows the well locations at the E/P Ponds.
2.3 SWMU 1: IWTP
RBAAP held a RCRA Part B Hazardous Waste Facility Permit (Permit No. CA7210020759) for the treatment and storage of hazardous waste. In August 2016, the RCRA permit, which included the IWTP facility, was closed in accordance with the closure requirements of that RCRA permit and State approval. The location of the IWTP is shown on Figure 7.
The IWTP was a treatment facility for industrial wastewater generated at the installation from electroplating, cleaning, and metal finishing processes. The primary treatment technologies were coagulation, flocculation, and clarification. The former IWTP was located to the immediate north of the production plant at the installation. Treated effluent water was discharged to the E/P Ponds via underground piping.
The IWTP was built after the Army acquired the facility in 1951. From 1952 to 1954, production lines 5 and 6 produced zinc-plated shells for the Navy. Because the zinc was electroplated from a cyanide solution, a separate system was required to treat waste from this area. Cyanide solutions were diverted to a special tank in the IWTP where chlorine was added
6 for neutralization. The neutralized cyanide waste joined the normally treated waste and both were transported to the E/P Ponds. The cyanide treatment tanks have not been in use since 1954. A Phase I RI was conducted between January 1987 and November 1998. However, in a letter dated July 27, 1998, DTSC recommended discontinuation of the investigation. DTSC believed that, due to the presence of existing system components, additional characterization of the IWTP should wait until Permit closure.
In 2012, the Army began the decommissioning, investigation, and remediation of the IWTP in accordance with the closure requirements of the RCRA Permit. The Army issued the Closure Certification Report Hazardous Waste Management Unit #1 Industrial Waste Treatment Plant RCRA Hazardous Waste Facility Permit Closure, RBAAP, California in 2013, which details the sampling conducted in the IWTP as part of the RCRA closure. Soil borings were advanced next to several of the IWTP sub-units and soil samples were collected and analyzed at these locations.
In February 2014, the Army submitted Closure Certification Reports for the 13 Hazardous Waste Management Units (HWMUs) to the DTSC for various areas of the Property as part of the larger RCRA Permit closure. Closure activities for the IWTP continued throughout 2014-2016.
On August 1, 2016, the Army obtained closure certification for the RCRA Permit including all 13 HWMUs and the IWTP from DTSC.
The entire IWTP area is now covered with concrete or asphalt. The groundwater under the IWTP is being addressed under the site RBAAP-03 under CERCLA.
2.4 RBAAP 14: Galbestos Panel Removal (and other removal actions) on Parcel A
2.4.1 Parcel A - Galbestos Panel Removal and associated soil contamination: Polychlorinated biphenyl (PCBs) were detected in Galbestos® panels on Buildings 1-8, 11, 12, 15, 33-39, 43, 45- 50, 80-83, 107, 133 and 160 and attached structures (USACE, 2011). Galbestos® is a galvanized sheet metal siding with a layer of asbestos felt on one side which had been dipped in an asphaltic coating containing PCBs. Over the years, the Galbestos® siding weathered, allowing a non-liquid form of PCBs to be released. Sampling results detected a release of PCBs from the Galbestos® panels above Toxic Substance and Control Act (TSCA) criteria as well as EPA Regional Screening Levels in several locations adjacent to buildings in the main plant area (Parcel A) and the NWSWR and Southeast Storm Water Reservoir [United States Army Corps of Engineers (USACE), 2013].
The Galbestos® panels were removed and appropriately disposed of offsite during 2018. All actions are complete and pending final documentation (final report was submitted to EPA in 2020).
Due to the deterioration of the Galbestos® panels, the soil south of Building 6 was contaminated with PCBs. A Time Critical Removal Action (TCRA, 40 CFR 300.415(b)) was conducted to remove contaminated soil. This soil contamination was characterized and
7 remediated in 2018. The actions for this area were completed as described by the TCRA Action Memo and Work Plan (Weston, 2018a and Weston, 2018b). During the remediation effort, the soil was excavated to approximately one to four feet below ground surface. All confirmatory samples were below the industrial action level of 0.95 parts per million (ppm) PCBs. As part of the same effort, the soil and sediment in the Northwest and Southeast stormwater reservoirs were sampled for PCBs and the stormwater conveyance system was flushed and cleaned of any soil contamination. These actions were completed in accordance with the TCRA Action memo and associated work plan (Weston, 2018a and Weston, 2018b). Site investigations and a final CERCLA remedy will be completed through the RI/FS, Proposed Plan and ROD process. The related documentation is currently under review, including additional requested sampling and analysis in several areas. It is unlikely the additional data will change the LUCs required to prevent residential uses.
2.4.2. Parcel A – Building 11, Paint and Oil Storage area: This area was sampled for PCBs and total petroleum hydrocarbon (TPH) compounds. There was one area with the PCB concentrations above 1 ppm (7.4 ppm PCBs). The TPH sample results were less than the commercial/industrial worker exposure risk levels, but above residential levels. Through the TRCA work plan associated with the Galbestos® panels (Weston, 2020), the soil that contained PCB concentrations above 1 ppm was excavated. LUCs will be formally documented in the upcoming ESD #2.
2.4.3. Parcel A – Structure 95, Substation No. 1: Previous soil sample results from 2008 yielded a maximum concentration of 0.26 ppm PCBs. These levels are below any action level. The area will remain secured and marked (Weston, 2018c). It is recommended to leave this area as an electrical outdoor substation. LUCs will be formally documented in the upcoming ESD #2.
2.4.4 Parcel A - Structure 97, Substation No. 3: This area underwent PCB and TPH analysis to characterize the extent of contamination. The maximum concentration for TPH as diesel was 6,600 mg/kg. The PCB concentrations in both the soil and concrete transformer pad were above 1 ppm PCBs. This transformer is inactive, and due to the PCB levels above 1 ppm PCBs, the remaining equipment was removed, and the contaminated soil was removed. LUCs will be formally documented in the upcoming ESD #2.
2.4.5 Parcel A – Structure 101, Substation Spare: This area underwent PCB analysis to characterize the extent of contamination. The transformers are no longer present. The concrete was sampled, and yielded results of 6.8 ppm of PCBs. The soil concentrations ranged from 0.074 ppm to 1.9 ppm PCBs. Due to the fact that this area is no longer used and has elevated levels of PCBs, the pad and contaminated soil was removed as part of the TRCA work.
The work plan received approval in June 2020 (Weston, 2018c). The Uniform Federal Policy Quality Assurance Program Plan (QAPP) was approved in June 2020 to help delineate remedial actions (Weston, 2020). LUCs will be formally documented in the upcoming ESD #2.
8 2.5 Parcel 1 and 1A on post PCB remediation
Parcels 1 and 1A were used for employee parking while RBAAP was operational. The presence of PCBs in surface soils was confirmed during an investigation in 2013 (USACE, 2015).
Following the 2013 investigation, a cleanup of PCB impacted soils on Parcels 1 and 1A was conducted from November 2015 through June 2017. The remedial action goals established were 0.99 milligrams/kilogram (mg/kg) for soil and 0.22 mg/kg PCBs for sediments. After excavation of grids established for the TCRA, the fencing at the south and east boundaries of the two parcels was restored and an elevated soil berm was placed in the areas where the fence was restored to arrest off-post migration of precipitation. A RI/FS and ROD are being completed to select LUCs specific to residual soil contamination at Parcels 1 and 1A. Additional sampling and removal actions are planned, however the LUCs are not anticipated to change.
The remedies selected under the Site-Wide ROD, ESD #1 and ESD #2 outline restrictions on future use of the property, including the prohibition of residential use and the requirement to utilize an approved soil management plan when undergoing soil disturbance activities in specific areas. These remedies are implemented by the Army through the LUC Remedial Design (LUCRD) and deed restrictions, as described in the Environmental Protection Provisions, and are meant to protect human health and the environment. They are further implemented outside of the CERCLA process by the State of California in the Covenant to Restrict the Use of Property (CRUP). The dual layers of protection provide the best use of administrative controls to protect the public health and welfare, and the environment but only the LUCRD is considered an enforceable CERCLA remedial design document. The general responsibilities of the Army and potential future property owners and/or lessees are described in the Subsections below, i.e., LUC implementation, notification, and inspection reporting and enforcement for the LUCs.
2.6 Evaporation/Percolation Ponds
The E/P Ponds are identified as SWMU-23 in the June 2002 Corrective Action Consent Order (DTSC, 2002). The unlined ponds were constructed in 1952 for the disposal of treated industrial wastewater generated at RBAAP and continue to be used for that purpose. The four ponds are on land owned by the U.S. Army adjacent to the Stanislaus River. The ponds are operated independently based upon the volume of effluent flow. A sediment removal action was completed in 1993 to address elevated zinc in sediments. The E/P Ponds were determined to require no further remedial action in the 1994 ROD but undergo quarterly groundwater monitoring as specified in the Waste Discharge Requirements Order No. 5-01-200.
The Army is preparing to conduct an ecological risk assessment to determine if the 1993 Removal Action eliminated the unacceptable risk to the ecological receptor.
9 3.0 RBAAP LAND USE CONTROLS
3.1 On-Post Land Use Restrictions and Requirements
The LUCs for RBAAP are identified below and consist of soil and groundwater restrictions, residential use restrictions, deed restrictions, and environmental covenants. These LUCs will be incorporated into the RLRA Master Development Plan. Declaration of Covenants, Conditions, and Restrictions provide additional layers of protection and are described in further detail in the subsections. The expected LUC duration is until the concentration of hazardous substances in the soil and/or the groundwater have been reduced to levels that allow for unlimited use and unrestricted exposure. Figure 2 shows the areas at RBAAP subject to land use restrictions.
The Army is responsible for implementing, maintaining, reporting on, and enforcing the LUCs. Although the Army intends to transfer these procedural responsibilities to another party by contract, property transfer agreement, or through other means, the Army shall retain responsibility for remedy integrity. Any activity that is inconsistent with the institutional controls (IC) objectives or use restrictions, or any other action that may interfere with the effectiveness of the ICs will be addressed by the Army as soon as practicable, but in no case will the process be initiated later than ten days after the Army becomes aware of the breach. The Army will notify EPA and the State as soon as practicable but no longer than ten days after discovery of any activity that is inconsistent with the IC objectives or use restrictions, or any other action that may interfere with the effectiveness of the ICs. The Army will notify EPA and the State regarding how the Army has addressed or will address the breach within ten days of sending EPA and the State notification of the breach. Prior to seeking approval from the EPA and the State, the recipient of the property must notify and obtain approval from the Army of any proposals for a land use change at a site inconsistent with the use restrictions and assumptions described in the 1994 ROD, ESD #1 and the future ESD #2. The Army shall not modify or terminate LUCs, implementation actions, or modify land use without approval of EPA and concurrence of the State, as set forth in the FFA for RBAAP. The Army shall seek prior concurrence before an anticipated action that may disrupt the effectiveness of the LUCs or an anticipated action that may alter or negate the need for LUCs.
The Land Use Controls for Parcels A, 1, 1A, 2, 2A and the NWSWR includes the following:
3.1.1 On-Post Residential Use Restriction: Parcels A, 1, 1A, 2, 2A and the NWSWR shall be used solely for commercial or industrial activities and not for residential purposes. “Residential” includes, but is not limited to:
(a) A residence, including any mobile home or factory-built housing, constructed or installed for use as residential human habitation.
(b) A hospital for humans.
(c) A public or private school for persons under 18 years of age. (d) A day care center for children.
10 3.1.2 On-Post Groundwater Use Restriction. Groundwater on Parcel A, 1, 1A, 2, 2A and the NWSWR shall not be accessed or used for any purpose. For the purpose of this restriction, groundwater shall have the same meaning as in §101(12) of CERCLA. This restriction does not apply to removal actions, remedial actions, or any remediation efforts. Prohibited activities include:
(a) Drilling for any water, oil, or gas, without the prior written consent of the FFA Parties.
(b) Extraction or removal of groundwater without the prior written consent of the FFA Parties
(c) Exception. This section does not apply to three wells (I1, I5 and I6) that are currently permitted under RWQCB Water System No. CA5000211.
3.1.3. On-Post Restriction on the Interference with Remedial Efforts and Monitoring Systems.
Activity on Parcels A, 1, 1A, 2, 2A and the NWSWR that may alter, interfere with, or otherwise affect the integrity or effectiveness of, or the access to, any investigative, remedial, monitoring, operation or maintenance system (e.g., cap, vapor extraction system, monitoring system, groundwater extraction system and infrastructure, groundwater wells, groundwater well heads, in situ treatment systems, etc.) is prohibited without prior written approval of the FFA Signatories.
3.1.4. Restriction on Access, Excavation and Other Soil Disturbing Activities on the Landfill on Parcel A. The Owner or Occupant shall not conduct or permit others to conduct any excavation activities (including but not limited to digging, drilling, or any other excavation or disturbance of the land surface or subsurface) on the landfill as described in Figure 4, or any other activities that may damage the landfill soil cover and liner. The Owner or Occupant shall not construct, make, or permit any alterations, additions, or improvements to the landfill in any way without prior written approval of FFA Signatories.
3.1.5. Restricting Soil Disturbances for Parcels A, 1, 1A and the NWSWR. No activities that will disturb the soil (including but not limited to digging, drilling, or any other excavation or disturbance of the land surface or subsurface) shall be allowed on Parcels A (not including the landfill that is covered under Section 3.2.4 above), A, 1, 1A and the NWSWR without a Soil Management Plan pre-approved by the FFA Signatories in writing. This restriction does not apply to removal actions, remedial actions, or any remediation efforts.
Any soil brought to the surface by grading, excavation, trenching, or backfilling shall be managed in accordance with all applicable provisions of state and federal law.
3.1.6. Best Management Practices for Soils within Parcels 2 and 2A. While there is no CERCLA remedy specific to a known release on Parcels 2 and 2A, the unimproved land is adjacent to parcels with known contamination. SWMU 22 (Sanitary Wastewater Settling Ponds) were located on Parcel 2 and was properly closed under the RCRA Permit. SWMU 22 was then further investigated under the Corrective Action Consent Agreement. No release of a hazardous substance, pollutant, or contaminant was identified. Due to the potential for
11 adjacent releases, Parcels 2 and 2A is subject to the best management practice of sampling for contaminants of concern whenever earthmoving activities disturb one-half acre or more of soil.
The soil management plan should describe the contaminants to be sampled, the method of sampling, and the contingency activities that will be required if contamination is identified (i.e., accumulation areas, personal protective equipment, and off-post disposals).
3.1.7 The area defined as the E/P Ponds is currently used as a discharge basin for treated water from the groundwater treatment plant (GWTP) at RBAAP. The ponds receive water from RBAAP via a 3.4-mile underground pipe. Discharge to the ponds is conducted in accordance with the RWQCB Waste Discharge Requirements Order No. 5-01-200 (RWQCB, 2001). The E/P ponds will continue to be maintained for this purpose until no longer needed for the GWTP operations.
This use will be maintained until the conclusion of the ecological risk assessment to determine if further restrictions are necessary.
4.0 REPORTING
Beginning upon approval of the PMP and continuing until the effective date of property conveyance, the Army will provide to EPA, DTSC and the RWQCB an annual LUC Compliance Report. Following property conveyance, either the Army or new property owner will continue to provide annual LUC Compliance (LUCC) Reports as will be determined in the terms of the transfer and documented in the deed.
As the basis for the LUC Compliance Report, the LUCC or designee shall inspect the sites to evaluate compliance with required restrictions. The compliance report will be submitted annually as a letter report containing the following information:
• Identification of the site and associated restrictions; • A summary of the physical site inspections at each site; • Information on any violations. Should any violation or deficiency be found during a site inspection, the Army will provide a written explanation describing the deficiency and what efforts or measures have or will be undertaken to correct the deficiency;
• Identification any corrective actions found to be necessary as a result of changes in site conditions;
• Any proposed changes to inspection and reporting frequency.
5.0 DOCUMENTATION OF RESTRICTIONS
5.1 Signage
Information signs will be upgraded and placed at the landfill site informing people accessing
12 these areas that there are use restrictions. The signs will indicate that the area is subject to land use controls and will identify the organization to contact regarding questions or concerns.
5.2 Map of LUC Locations
Maps showing the locations of sites with land use controls will be provided to all users of the property.
6.0 ENFORCEMENT
A site will continue to be subject to regulations under CERCLA until such time that it is shown that the remedy is complete, or the site conditions no longer represents a threat to human health or the environment.
Should a site be transferred, the Army shall include all existing regulatory restrictions on the transfer deed in the form of restrictive covenants or deed restrictions. The deed provisions will include requirements for the Army or future owner to enforce, maintain, and annually inspect the sites and associated controls.
7.0 TERMINATION OF LAND USE CONTROLS
Land Use Controls will be maintained until the concentration of hazardous substances in the soil and groundwater are at such levels to allow for unrestricted use. The following options are available with regulatory concurrence should the Army or future property owner decide that the land use controls at a site need to be modified:
• A new evaluation of the site. The evaluation may include an evaluation of historical data against current standards. The evaluation could find that contamination levels are below the protective standard values. • Performance of additional remediation such that use restrictions would no longer be required.
13 8.0 REFERENCES
Ahtna Engineering Services, LLC (AES), 2013. Geochemical Fixation In-Situ Treatment Work Plan, Riverbank Army Ammunition Plant, Riverbank, California (In Situ Work Plan). November.
AES, 2016. Annual In Situ Treatment Status Report (2015 First through Fourth Quarter), Riverbank Army Ammunition Plant, Riverbank, California. March.
AES, 2017. Addendum 1 to the Geochemical Fixation In-Situ Treatment Work Plan, Riverbank Army Ammunition Plant, Riverbank, California. May.
AES, 2019. 2018 Annual Status Report, In-Situ Treatment, Phase IA, Riverbank Army Ammunition Plant, Riverbank, California. December.
Ahtna Global, LLC (AGL), 2019. Addendum 2 to the Geochemical Fixation In Situ Treatment Work Plan, Riverbank Army Ammunition Plant, Riverbank, California. October.
Ahtna Government Services Corporation (AGSC), 2009a. Geochemical Fixation In-Situ Pilot Draft Final Report, Riverbank Army Ammunition Plant, Riverbank, California. February.
AGSC, 2009b. Rebound Study Draft Final Report, Riverbank Army Ammunition Plant, Riverbank, California. February.
Ahtna Solutions (Ahtna), 2025. Addendum 3 to the Geochemical Fixation In-Situ Treatment Work Plan, Riverbank Army Ammunition Plant, Riverbank, CA. Final. October.
U.S Army, 1990. Federal Facilities Agreement Under CERCLA Section 120 In the Matter of: The U.S. Department of the Army, Riverbank Army Ammunition Plant. April.
U.S. Army, 1994 Record of Decision, Riverbank Army Ammunition Plant. March.
U.S. Army, 2013. Explanation of Significant Differences #1 to the Riverbank Army Ammunition Plant Record of Decision. January.
USACE. 2011. Draft Final Galbestos Investigation Report, Riverbank Army Ammunition Plant, Riverbank, California. March.
USACE. 2013. Draft Final EDC Property & Sale Parcels 2 and 2A Soil Investigation Report.
January.
USACE, 2015. Final Southern Parcels 1&1A and OID Drainage Ditch Soil Data Gap Investigation Report, Riverbank Army Ammunition Plant, California. May.
14 USACE, 2022. Final Fifth Five Year Review for Riverbank Army Ammunition Plant. Riverbank Army Ammunition Plant, March.
Weston. 1991. Riverbank Army Ammunition Plant Remedial Investigation Report. Prepared for U.S. Army Toxic and Hazardous Materials Agency, Aberdeen Proving Ground, Maryland 21010- 5401. July.
Weston, 2018a. Final Action Memo Parcel A Soil/Sediment Time-Critical Removal Action.
Former Riverbank Army Ammunition Plant, California. January.
Weston, 2018b. Final Work Plan Parcel A Soil/Sediment Time-Critical Removal Action. Former Riverbank Army Ammunition Plant. February.
Weston, 2018c. Draft Final Finding of Suitability Early Transfer (FOSET) Data Gap Sampling Report, October.
Weston, 2020. Uniform Federal Policy – Quality Assurance Project Plan FOSET Datagap and Courtyard Remediation. May.
Figures
FIGURE 1
RBAAP Location
Riverbank Army Ammunition Plant
Riverbank, California ³
SOURCE: USACE, 2006
0 600 1,200Feet
LEGEND
RBAAP PROPERTY
BOUNDARY
PARCEL 2
PARCEL
2A
LANDFILL
NW
STORM WATER
RESERVOIR
PARCEL A
PARCEL 1
PARCEL 1A
PARCEL B
No longer owned by the Army
Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community Path: D:\Riverbank\Riverbank\GIS\GIS_Projects\Parcel_UseRestrictions\RBAAP_Parcel_UseRestrictions.mxd Riverbank Parcel
Use Restrictions
Riverbank Army Ammunition Plant
Riverbank, California
Stanislaus County
0 100 200 300 400 500
Feet
Coordinate System: State Plane California 3
Projection: Lambert Conformal Conic
Datum: North American 1983
The data depicted in these GIS layers are the result of digital analyses performed on a database consisting of information from a variety of governmental and other credible sources. The accuracy of the information presented is limited to the collective accuracy of the database on the date of the analysis. This information is believed accurate, and reasonable efforts have been made to ensure the accuracy of the data.
However, the U.S. Army Corps of Engineers, Sacramento District GIS Unit expressly disclaims responsibility for damages or liability that may arise from using this data.
This product is the property of the U.S. Army Corps
of Engineers, Sacramento District GIS Team, and this product's use is thereby restricted.
Restriction on the Interference with Remedial Efforts
and Monitoring Systems
Residential Use Restriction
Groundwater Use Restriction
Excavation Restriction on Landfill
Restricting Soil Disturbance (other than landfill)
Legend
Railroad
Parcel Boundary
Landfill
Carve Out
1111111111111111 I I II I I I II I I II I I lll!!!!I !JI llll 11111111 -� I ---- Open Space ----ll l
r
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, ,-
/,,
/j' /1
r I
�I
�I
Grazing
Area
Hetch Hetchy
Aquiduct
EPPonds
Landfill
I I I II I II I I I I II I I I I I II I II I I I I II I II I I II I II I I I I 1111111111111111 l I LEGEND:
1111111111 Approximate RBAAP Boundary
- Grazing Area
□
□
Buildings used for production,
administration and industrial lease
Evaporation Perculation Ponds
Production Area, Industrial Leased
Building, Open Storage
- Landfill
·-
.�_,-=::.
, .. _ Figure 3
General Historic
Land Use
EXHIBIT F Landfill Survey
EXHIBIT"E"
Legal Description
Landfill Parcel
All that portion of the west half of Section 31, Township 2 South, Range 10 East, M. D. B. & M., described as follows:
COMMENCING at the northwest corner of said Section 31 at the intersection of Claus Road and Kentucky Avenue; thence South 31
° 17'51" East along a tie line, 2288.85 feet to the Point of Beginning, said point being 10 feet easterly from the center line of the set of main railroad tracks; thence southerly, 1 O feet easterly from and parallel with said railroad tracks the following courses and distances:
1. South 00°
22'50" East, 136.84 feet
2. a curve concave to the east, having a radius of 592.36 feet, a central angle of 8 °
18'15",
and an arc length of 85.85 feet;
3. South 08°
41'05" East, 609.91
4. a curve concave to the northeast having a radius of 992.36 feet, a central angle of 11 °
58'02", and an arc length of 207 .27 feet;
5. South 20°
39"07" East, 118.16 feet;
6. a curve concave to the west having a radius of 337.64 feet, a central angle of 2 °
02'02"
and an arc length of 11. 98 feet, to a point that bears North 31 °33'27" East, 2560.85 feet from the southwest corner of said Section 31; thence leaving said parallel line North 89°
29'32" East, 71.56 feet to an existing cyclone fence, said fence being 9 feet west of the west line of property described in Grant Deed Document Number 2008-0012789, Official Records of Stanislaus County; thence along said fence line North 00° 29'58" West,
parallel with and 9 feet west of said west line of Grant Deed, 1148. 76 feet to the northeast corner of said cyclone fence; thence continuing along said fence South 89° 32'28" West,
259.43 feet to the Point of Beginning.
Containing 5.17 acres
APN: 062 031 005 (portion)
The above described Parcel being subject to all easements and rights of way of record including, but not limited to overhead power lines and also rights for drainage using existing facilities along the western boundary line. Said existing drainage facilities may be in use by others and may be nonexclusive in nature.
Min iear
Ave
Reich Ln
MW122C
MW122A�MW122
MW122B
MW121A'._,MW121C MW121B
Townsend Ave
C _,
1?
3 ;:B
QJ
u
C
·.:::
Prince-Andrew Dr
MWlllC
,��uw
MWllOA' IMW110B
MW152A' & MW152B MW153B MW153A'
• • Claribel Rd • •
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•MW119A'
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eMW41A
I
11 @
Building 13
Area
.... i,,;.-.---.1-- Groundwater Treatment
Plant (GWTP)
MW5A� ■
MWSB• •
Mwsc•
.
•
.
Riverbank
0.25 Miles
-
Notes:
0 225
O" 1/2"
450 Feet
l"
Well Location Map
Figure
5 MW145A' & MW145B ••
Monitoring Well
Extraction Well
Inaccessible Monitoring Well
Inaccessible Extraction Well
Injection Well
Production Well
Streets
Highways
RBAAP Boundary
Landfill Boundary
Parcel 2
Parcel 2A
APN 075023007
APN 075023005
We bste r R d
Ce ntral Ave
Autre y Ct
Pa
ved
Acce ss R oad
Me sa Dr
Ad am s Grave l Plant R d
Sne d igar R d
State Hw y 108
Figure
0 150 300 Fe e t
³6
0" 1/2" 1"
Evaporation/Percolation Pond Map
Pond 4
Pond 1
Pond 2
Pond 3
MWP-2
MWP-3
MWP-5
MWP-1
MWP-4
Monitoring Well
Highways
Streets
Evaporation/Percolation
Pond Boundary
(approximate; not a
product of survey)
Notes:
FIGURE 7
RBAAP Former IWTP Site
Legend:
Approximate Boundary of the IWTP Site (SWMU-1) Defining Area Subject to ROD contingency and RCRA Part B Permit Buildings
IWTP AREA
Lease No. DACA05-1-21-508
Exhibit J-1
1 of 8
EXHIBIT J-1
ENVIRONMENTAL PROTECTION PROVISIONS
1. USE OF THE PROPERTY
The sole purpose for which premises and improvements thereon may be used, absent written approval from the Lessor for any other use, is for commercial/industrial use.
2. SUBSEQUENT TRANSFERS
The Lessee shall neither transfer nor assign this lease or any interest therein or any property on the leased premises, nor sublet the leased premises or any part thereof or any property thereon, nor grant any interest, privilege, or license whatsoever in connection with this lease without the prior written consent of the Lessor. Such consent shall not be unreasonably withheld or delayed. Every lease or sublease shall contain the environmental protection provisions contained herein.
3. REGULATORY OR ENVIRONMENTAL PERMITS
The Lessee shall be solely responsible for obtaining at its own cost and expense any regulatory or environmental permits required for its operation under the lease, independent of any existing Riverbank Army Ammunition Plant (“RBAAP”) permits. The Lessee shall also be required to obtain its own EPA Identification Number, if applicable.
Permits that may be required include Stormwater Pollution Prevention Plans or permits under the National Pollutant Discharge Elimination System, construction permits, or other Federal, State, or local permits.
4. LESSEE COMPLIANCE
The Lessee shall comply with all lawful statutes, regulations, permits, or orders affecting the activity hereby authorized when such are issued by the Environmental Protection Agency; the California Department of Toxic Substances Control (“DTSC”); the Regional Water Quality Control Board Central Valley Office (“RWQCB”); or any other Federal, State, interstate, or local government agency having jurisdiction to abate or prevent pollution. The disposal of any toxic or hazardous materials within the leased premises by the Lessee or any sublessee is prohibited.
5. INTERFERENCE WITH ON-GOING ENVIRONMENTAL REMEDIATION The Lessee shall not disrupt, inflict damage, obstruct, or impede on-going environmental restoration work on the leased premises or anywhere else on RBAAP. The Lessee shall indemnify the Government for any costs incurred as a result of Lessee’s breach of this provision.
Lease No. DACA05-1-21-508
Exhibit J-1
2 of 8
6. LESSOR ACCESS CLAUSE
The Lessor’s rights under this Lease specifically include the right of the Lessor to inspect, upon reasonable notice, the Leased Premises for compliance with environmental, safety, and occupational health laws and regulations, whether or not the Lessor is responsible for enforcing them. Such inspections are without prejudice to the right of duly constituted enforcement officials to make such inspections. The Lessor normally will give the Lessee twenty-four (24) hours prior notice of its intention to enter the leased premises unless it determines the entry is required for safety, environmental, operations, or security purposes. The Lessee shall have no claim against the United States or any officer, agent, employee, or contractor thereof on account of any entries.
7. FEDERAL FACILITY AGREEMENT AND HAZARDOUS WASTE FACILITY PERMIT The Lessor acknowledges that the RBAAP is on the National Priorities List (“NPL”) under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (“CERCLA” 42 U.S.C. §9601 et. seq.), as amended. The Lessor also acknowledges that RBAAP had been issued a Hazardous Waste Facility Permit by the DTSC. The Lessee acknowledges that the Lessor has provided a copy of the RBAAP Federal Facility Agreement (“FFA”), dated April 5, 1990, the Hazardous Waste Facility Permit, dated May 6, 2006, and any subsequent modifications to both documents. For so long as the Property remains subject to the FFA and any permits, the Lessee, its successors and assigns, agree that they will not interfere with the United States Department of the Army activities required by the FFA and any permits. In addition, should any conflict arise between the FFA and any permits, as they presently exist or may be amended, and the lease provisions, the FFA provisions shall take precedence.
The Lessee further agrees that notwithstanding any other provision of the Lease, the Lessor assumes no liability to the Lessee should implementation of the FFA or any permits interfere with the Lessee’s use of the Leased Premises. The Lessee shall have no claim on account of any such interference against the United States or an officer, agent, employee or contractor thereof, other than for abatement of rent.
8. CERCLA ACCESS CLAUSE
The Lessor and its officers, agents, employees, contractors, subcontractors, and state and federal regulatory officials shall have the right, upon reasonable notice to the Lessee, to enter upon the Leased Premises in any case in which a response or corrective action is found to be necessary, or is in progress on the Leased Premises, or such access is necessary to carry out a response or corrective action on adjoining property. Right of access includes, without limitation, the right to perform any environmental investigation, survey, monitoring, sampling, testing, drilling, boring, coring, test-pitting, installing monitoring or pumping wells, or other treatment facilities, response action, corrective action, or any other action necessary for the Lessor to meet its responsibilities under applicable laws and as provided for in this Lease.
9. LESSEE COMPLIANCE DURING RESPONSE OR CORRECTIVE ACTION The Lessee agrees to comply with the provisions of the appropriate health or safety plan in effect during the course of any of the above-described actions. Any inspection, survey, investigation, or other corrective or response action will, to the extent practicable, be coordinated with representatives designated by the Lessee or any sublessees. The
Lease No. DACA05-1-21-508
Exhibit J-1
3 of 8
Lessee and sublessees shall have no claim, on account of such entries, against the United States or any officer, agent, employee, contractor, or subcontractor thereof. In addition, the Lessee and any sublessees shall comply with all the applicable Federal, State, and local occupational safety and health regulations.
10. ENVIRONMENTAL COMPLIANCE PLANS
The Lessee shall submit to the Lessor, and maintain thereafter, an Environmental Compliance Plan which describes, in detail, the program for environmental management and method of compliance, by the user of any portion of the Leased Premises, whether Lessee, with all Lessor, Federal, State, and local laws and regulations for the use, management, generation, storage, treatment, and disposal of all hazardous waste, hazardous materials, and hazardous substances. Each Environmental Compliance Plan for a portion of the Leased Premises, or request for waiver of the requirement for a plan due to the non-hazardous nature of the proposed use, must be submitted and approved in writing by the Lessor prior to occupancy of the intended portion of the Leased Premises. Thereafter, each such Environmental Compliance Plan shall be incorporated in the Lease, and shall be included as an exhibit in the relevant sublease(s). the Lessee shall be responsible for the overall compliance of its operations. The Lessee shall be responsible for ensuring the preparation of all documents, records, and reports associated with the environmental compliance of its operation. No liability or responsibility shall attach to the Leased Premises or the Lessor as a result of the Lessor’s review and approval of the Environmental Compliance Plan under this paragraph.
The Lessee further agrees that in the event of any assignment or sublease of the Leased Premises, it shall provide to the EPA Region 9, the DTSC, and the RWQCB Central Valley Office a copy of the assignment or sublease of the Leased Premises, by certified mail, within fourteen (14) days after the effective date of such transaction. The Lessee may delete the financial terms and any other propriety information from the copy of any assignment or sublease furnished pursuant to this condition.
11. LAND USE RESTRICTIONS
a. The United States Department of the Army has undertaken careful environmental study of the Leased Premises and concluded that the land use restrictions set forth below are required to ensure protection of human health and the environment. The Lessee shall not undertake nor allow any activity on or use of the Leased Premises that would violate the land use restrictions contained herein.
i. Residential Use Restriction. The Lessee shall not use the Leased Premises for residential purposes. For purposes of this provision, residential use includes, but is not limited to: single family or multi-family residences; childcare facilities; nursing home or assisted living facilities; and any type of educational purpose for children/young adults in grades kindergarten through 12.
ii. Groundwater Restriction. Lessee is hereby informed and acknowledges that the groundwater under the Leased Premises has contamination consisting of hexavalent chromium, total chromium (all
Lease No. DACA05-1-21-508
Exhibit J-1
4 of 8
valence states) and cyanide at levels exceeding the remediation level State Drinking Water Maximum Contaminant Level. The Lessee shall not access or use groundwater underlying of the Leased Premises for any purpose without the prior written approval of the United States Department of the Army, the U.S. EPA Region 9, the DTSC, and the RWQCB Central Valley Region. For the purposes of this restriction, “groundwater” shall have the same meaning as in §102(12) of CERCLA. iii. Notice of Groundwater Monitoring Wells. The Lessee is hereby informed and does acknowledge the presence of approximately 150 groundwater monitoring wells, injection wells, and extraction wells on the Leased Premises. The Lessee shall not disturb or permit others to disturb the wells on the Leased Premises without prior written approval from the Lessor, the U.S. EPA Region 9, the DTSC, and the RWQCB Central Valley Region. Upon the Lessor’s determination that a well is no longer necessary, the Lessor will close such well at the Lessor’s sole cost and expense in accordance with applicable laws, regulations, and ordinances. iv. Excavation and Development Restrictions. The Lessee shall not conduct or permit others to conduct any excavation activities (i.e. digging, drilling, or any other excavation or disturbance of the land surface or subsurface) at the former Industrial Wastewater Treatment Plant (“IWTP”), or any other activities that may damage the IWTP cover, without prior written approval of the Lessor, the U.S. EPA Region 9, the DTSC, and the RWQCB Central Valley Region. The IWTP is a closed former Resource Conservation and Recovery Act site. The regulatory prescribed remedy at the IWTP (cover) shall remain in place. Any damage to this cover shall be promptly repaired. Any proposed alteration to the cover requires Lessor approval prior to execution of the alteration. No subsurface activities shall be permitted within the IWTP area. v. Landfill Restriction. The Lessee shall not conduct or permit others to conduct any excavation activities (i.e. digging, drilling, or any other excavation or disturbance of the land surface or subsurface) at the landfill, or any other activities that may damaged the RBAAP Landfill soil cover and liner. The Lessee or any approved contractor, shall not construct, make, or permit any alterations, additions, or improvements to the landfill in any way that may violate this restriction. The Lessor will be notified of any breach of the landfill cover within twenty-four (24) hours.
The Lessee and any sublessee will take immediate steps to control access to such breach and begin corrective measures to restore the landfill cover.
b. Modifying Restrictions. Nothing contained herein shall preclude the Lessee from undertaking, in accordance with all applicable laws and regulations and without any cost to the Lessor, such additional action necessary to allow for other less restrictive use of the Leased Premises. Prior to such use of the Leased Premises, the Lessee shall consult with and obtain the prior written approval of the Lessor, the U.S. EPA, the DTSC, and the RWQCB Central Valley Region.
Upon the Lessee’s obtaining these approvals, the Lessor agrees to revise the lease.
Lease No. DACA05-1-21-508
Exhibit J-1
5 of 8
c. Submissions. The Lessee shall submit any requests for modifications to the above restrictions to the Lessor, the U.S. EPA, the DTSC and the RWQCB Central Vally Region, by first class mail, postage prepaid, and addressed as follows:
i. Lessor: 1325 J Street, Sacramento, California 95814
ATTN: Chief, Real Estate Division
ii. U.S. EPA Region IX: 75 Hawthorne Street, (SFD-8-3); San Francisco, CA 94105
Attn: Xuan-Mai Tran
iii. DTSC: 8800 Cal Center Drive; Sacramento, CA 95826-3200 Attn: Shahid Mahmood
iv. CV-RWQCB: 11020 Sun Center Drive, Suite 200; Rancho Cordova, CA 95670-6114
Attn: Nate Manley
12. HAZARDOUS WASTE MANAGEMENT
The Lessee is only authorized to store hazardous materials on the Leased Premises in accordance with the February 2, 2026 Authorization of Waiver to Store Non-Department of War Owned Hazardous Materials at the Former Riverbank Army Ammunition Plant Per 10 U.S.C. $2692(b)(9). The Lessee shall strictly comply with hazardous waste management requirements under RCRA and the State of California Hazardous Waste Management Rules, including proper hazardous waste characterization, labeling, storage, disposal, and documentation requirements. Except as specifically authorized by the Lessor in writing, the Lessee must provide, at its own expense, such hazardous waste management facilities, as needed to maintain compliance with all laws and regulations. Lessor hazardous waste management facilities shall not be available to the Lessee.
13. EXISTING HAZARDOUS WASTE
The Lessee shall not use RBAAP hazardous waste accumulation points. Neither shall the Lessee permit its hazardous wastes to be commingled with the Lessor’s hazardous waste.
14. LESSEE RESPONSE PLAN
The Lessee shall submit to the Lessor, and maintain thereafter, a plan for responding to hazardous waste, fuel, and other chemical spills prior to commencement of operations on the Leased Premises. Such plan shall be independent of the Lessor’s Spill Contingency Plan and, except for initial fire response and/or spill containment, shall not rely on use of RBAAP installation personnel or equipment. Should the Lessor provide any personnel or equipment, whether for initial fire response and/or spill containment, or otherwise on request of the Lessee, or because the Lessee was not, in the opinion of the Lessor, conducting timely cleanup actions, the Lessee agrees to reimburse the Lessor for its response costs.
Lease No. DACA05-1-21-508
Exhibit J-1
6 of 8
15. ALTERATIONS, ADDITIONS AND IMPROVEMENTS TO THE LEASED PREMISES The Lessee shall not construct, make or permit any alterations, additions, or improvements to the Leased Premises in any way which may adversely affect the Lessor’s investigations, restoration, or human health or the environment without prior written consent of the Lessor. Such consent may include a requirement to provide the Lessor with a performance and payment bond and such other requirements as may be deemed necessary to protect the interests of the Lessor. Except as such written approval shall expressly provide otherwise, all such approved alterations/additions/modifications shall become the Lessor’s property when annexed to the Leased Premises.
16. NOTICE OF THE PRESENCE OF ASBESTOS AND COVENANT
a. The Lessee is hereby informed and does acknowledge that friable and nonfriable asbestos or asbestos-containing materials (“ACM”) have been found on the Leased Premises, as described in the Asbestos Recertification Survey Report, Riverbank Army Ammunition Plant, Riverbank, California. Prepared for U.S. Army Corps of Engineers, Sacramento District, Sacramento, CA by Ahtna Global, LLC, Pleasant Hill, CA 94523. To the best of the Lessor’s knowledge, the ACM on the Leased Premises does not currently pose a threat to human health or the environment.
b. In addition to the Lessee’s general indemnity contained in Condition No. 16, titled “Indemnity and Hold Harmless,” above, the Lessee covenants and agrees that its use and occupancy of the Leased Premises shall comply with all applicable laws relating to asbestos and ACM. The Lessee similarly covenants and agrees that the Lessor assumes no liability for future remediation of asbestos, or for damages for personal injury, illness, disability, or death of the Lessee, its sublessees, successors or assigns, or any other person, including members of the general public, arising from, in incident to, the lease, transportation, removal, handling, use, disposition, or other activity causing or leading to contact of any kind whatsoever with asbestos on the Leased Premises during the duration of the Lease and to be responsible for any future remediation or abatement of any asbestos hazard found to be necessary on the Leased Premises. c. The Lessee acknowledges that it has inspected or has had the opportunity to inspect the Leased Premises as to its asbestos and ACM content and condition, and any hazardous or environmental conditions relating thereto. The Lessee shall be deemed to have relied solely on its own judgement in assessing the overall condition of all or any portion of the Leased Premises, including, without limitation, any asbestos or ACM hazards or concerns.
17. NOTICE OF THE PRESENCE OF LEAD-BASED PAINT AND COVENANT AGAINST
THE USE OF THE PROPERTY FOR RESIDENTIAL PURPOSES
a. The Leased Premises do not contain residential housing and are not being leased for residential purposes. The Lessee is notified that the Leased Premises contain buildings built prior to 1978 that contain lead-based paint (“LBP”).
Exposure to lead from LBP may place young children at risk of developing lead
Lease No. DACA05-1-21-508
Exhibit J-1
7 of 8
poisoning. Lead poisoning in young children may result in permanent neurological damage, including learning disabilities, reduced intelligence quotient, behavioral problems, and impaired memory. A risk assessment or inspection by Lessee for possible LBP hazards is recommended prior to its execution of this lease.
b. Information concerning known LBP and/or LBP hazards, a list of the location of LBP and/or LBP hazards, and a chart showing the condition of painted surfaces are contained in the Environmental Condition of Property Update (2026), attached hereto as Exhibit E-1 and previously provided to the Lessee.
Additionally, the Lessee has been provided a copy of the federally-approved pamphlet on lead poisoning prevention. The Lessee hereby acknowledges receipt of all the information described in this paragraph. c. The Lessee acknowledges that it has had the opportunity to conduct a risk assessment or inspection for the presence of LBP and/or LBP hazards prior to execution of this Lease.
d. The Lessee shall not permit use of any existing buildings or structures on the Leased Premises for residential habitation.
18. PCB NOTIFICATION AND COVENANT
a. The following PCB-Containing equipment is located on the Leased Premises:
electrical transformers and large industrial presses. This equipment is in operation, properly labeled in accordance with federal and state regulations, but have been determined to be in poor condition. A list of electrical transformers containing PCBs in excess of 50 parts per million (“ppm”) is presented in Exhibit G-1 hereto. In addition, PCBs are present in the paint and coating on the exterior siding of several buildings.
b. Sampling results have detected PCBs above Toxic Substance Control Act (“TSCA”) criteria in several locations within and adjacent to buildings in the main plant area of the RBAAP facility and within the soils of Parcels 1 and 1A. The Lessor and Lessee are undergoing remediation to address these PCB releases. c. If the Lessee causes, creates or exacerbates a release of PCBs from any equipment located within the Leased Premises the Lessee agrees to undertake any and all necessary abatement or remediation costs at its sole expense.
19. “AS IS”
The Lessee acknowledges that it has inspected or has had the opportunity to inspect the Leased Premises and accepts the condition and state of repair of the Leased Premises.
The Lessee understands and agrees that the Leased Premises and any part thereof is leased “AS IS” without any representation, warranty, or guarantee by the Lessor as to quantity, quality, title, character, condition, size, or kind, or that the same is in condition or fit to be used for the purpose(s) intended by the Lessee, and no claim for allowance or deduction upon such grounds will be considered.
Lease No. DACA05-1-21-508
Exhibit J-1
8 of 8
No warranties, either express or implied, are given with regard to the condition of the Leased Premises, including, without limitation, whether the Leased Premises does or does not contain asbestos, lead-based paint, or PCB-containing equipment. The Lessee shall be deemed to have relied solely on its own judgment in assessing the overall condition of all or any portion of the Leased Premises, including, without limitation, any asbestos, lead-based paint, PCB-containing equipment or other conditions on the Lease Premises. The failure of the Lessee to inspect, or to exercise due diligence to be fully informed as to the condition of all or any portion of the Leased Premises, will not constitute grounds for any claim or demand against the Lessor.
Nothing in this “AS IS” provision will be construed to modify or negate the Lessor’s obligation under CERLCA or any other statutory obligations.
20. HOLD HARMLESS
To the extent authorized by law, the Lessee, its successors and assigns, covenant and agree to indemnify and hold harmless the Lessor, its officers, agents, and employees from: (1) any and all claims, damages, judgments, losses, and costs, including fines and penalties, arising out of the violation of the Environmental Protection Provisions in this Lease by the Lessee, its successors and assigns; and (2) any and all claims, damages, and judgments arising out of, or in any manner predicated upon, human exposure to asbestos, lead-based paint, PCB-containing equipment, or other condition on any portion of the Leased Premises after the Effective Date of this Lease.
The Lessee, its successors and assigns, covenant and agree that the Lessor shall not be responsible for any costs associated with modification or termination of the Environmental Protection Provisions in this Lease, including without limitation, any costs associated with additional investigation or remediation of asbestos, lead-based paint, PCB-containing equipment or other condition on any portion of the Property.
Nothing in this Hold Harmless provision will be construed to modify or negate the Lessor’s obligation under CERCLA or any other statutory obligation.
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Water System Details
Water System No. : CA5000211 Federal Type : NTNC
Water System Name : RIVERBANK LRA State Type : NTNC
Principal County
Served : STANISLAUS Primary Source : GW
Status : A Activity Date : 03-22-
1979
Distribution System
Classification : D1 Max Treatment PlantClassification : TD Water System Contacts
Type Address Phone Email - Web Address
Physical
Location
Contact
CA5000211-
RIVERBANK LRA
5300 CLAUS RD
STE 1
RIVERBANK CA 95357
There
is no
phone
There is no email address.
There is no web address.
Administrative
Contact 6707 Third Street
RIVERBANK CA 95367
209-
869-
7128
[email protected]
Division of Drinking Water District / County Health Dept. Info Name Phone Email Address
DISTRICT 10 -
STOCKTON
209-948-
7696 [email protected]
31 E. CHANNEL STREET
ROOM 270 STOCKTON CA
95202
Annual Operating Periods &
Population Served Service Connections
Start
Month
Start
Day
End
Month
End
Day
Population
Type
Population
Served
1 10 12 31 NT 156
TypeCountMeter
Type
Meter
Size
Measure
AG 0 ME 0
AG 0 UM 0
CM 0 ME 0
CM 0 UM 0
IN 8 ME 0
IN 16 UM 0
RS 0 ME 0
RS 0 UM 0
Sources of Water Service Areas
11/19/25, 11:39 AM Water System Details
https://sdwis.waterboards.ca.gov/PDWW/JSP/WaterSystemDetail.jsp?tinwsys_is_number=5547&tinwsys_st_code=CA&wsnumber=CA5000211 1/3 Lease No. DACA05-1-21-508
EXHIBIT "K-1"
Name Type
Code
Status
WELL
NO. 01 -
STANDBY
WL A
WELL
NO. 05 WL A
WELL
NO. 06 WL A
Seller
Water
System
No.
Water System
Name
Seller
Facility
Type
Seller State
Asgn ID No.
Buyer
Facility
Type
Buyer State
Asgn ID No.
Code Name
NT INDUSTRIAL/AGRICULTURAL
Water Purchases
11/19/25, 11:39 AM Water System Details
https://sdwis.waterboards.ca.gov/PDWW/JSP/WaterSystemDetail.jsp?tinwsys_is_number=5547&tinwsys_st_code=CA&wsnumber=CA5000211 2/3
11/19/25, 11:39 AM Water System Details
https://sdwis.waterboards.ca.gov/PDWW/JSP/WaterSystemDetail.jsp?tinwsys_is_number=5547&tinwsys_st_code=CA&wsnumber=CA5000211 3/3