Superfund Information Systems: Site Profile

Superfund Site:

HILL AIR FORCE BASE
HILL AFB, UT

Operable Units

Below, EPA has provided a list of the remedial actions selected pertaining to each operable unit.

EPA issues Records of Decision (RODs) to explain which cleanup methods will be used at Superfund National Priorities List sites. EPA has two primary documents that it may use to identify changes to the remedies selected in RODs. EPA uses a ROD Amendment when it needs to make a fundamental change to the remedy. EPA publishes an Explanation of Significant Differences (ESD) for significant changes.

During cleanup, complex sites may be divided into several distinct areas to make the response more efficient. These areas, called operable units (OUs), may address geographic areas, specific problems, or medium (e.g., groundwater, soil) where a specific action is required.

EPA is working to improve data quality. The information presented on this page is undergoing review for accuracy and completeness, and may be subject to change.

OU ID Name Decision Document Cleanup Technologies Selected
in the Decision Document
00 SITEWIDE No decision document
01 LF 3&4,CP 1&2,FTA 1&2 Record of Decision
September 29, 1998
Centralized Waste Treatment Facility (onsite)
Containment (other, NOS, onsite)
Dewatering
Discharge (surface water/NPDES discharge)
Disposal (offsite)
Excavation
Extraction (recovery/vertical well)
Institutional Controls
Monitored Natural Attenuation
Monitoring
Monitoring (NAPL)
Operations & Maintenance (O&M)
Treatment (other, NOS, exsitu, onsite)
Treatment (other, NOS, offsite)
01 LF 3&4,CP 1&2,FTA 1&2 Explanation of Significant Differences
September 26, 2006
Discharge (POTW)
01 LF 3&4,CP 1&2,FTA 1&2 Explanation of Significant Differences
September 16, 2015
ESD/Amd - Cleanup/Performance Standard Change
ESD/Amd - Significant Cleanup Time Change
ESD/Amd - Treatment Area Change
02 CP-3 Record of Decision
September 30, 1991
Air Stripping (P&T, exsitu)
Discharge (POTW)
Discharge (surface water/NPDES discharge)
Disposal (offsite)
Extraction (recovery/vertical well)
Free Product Recovery (active or passive, excluding MPE and bioslurping)
Incineration (offsite)
Monitoring
Oil Water Separation (P&T, exsitu)
02 CP-3 Record of Decision
September 30, 1996
Cap (engineered cap)
Discharge (surface water/NPDES discharge)
Institutional Controls
Monitoring
Soil Vapor Extraction (insitu)
Treatment (other, NOS, exsitu, onsite)
02 CP-3 Explanation of Significant Differences
November 04, 2009
ESD - Nonfundamental Change (other)
03 IWTP Record of Decision
September 25, 1992
Cap (engineered cap)
03 IWTP Record of Decision
September 28, 1995
Cap (engineered cap)
Soil Vapor Extraction (insitu)
04 LF 1&2 Record of Decision
June 14, 1994
Air Stripping (P&T, exsitu)
Cap (engineered cap)
Carbon Adsorption (liquid phase, P&T, exsitu)
Discharge (POTW)
Discharge (other, NOS)
Extraction (recovery/vertical well)
Institutional Controls
Monitoring (soil gas)
Off-gas Treatment (other, NOS)
Soil Vapor Extraction (exsitu)
Vapor Intrusion Mitigation (other, NOS)
04 LF 1&2 Explanation of Significant Differences
September 26, 2006
Discharge (POTW)
Monitoring (ambient air)
04 LF 1&2 Record of Decision Amendment
September 25, 2017
Data not available
05 TOOELE RAIL SHOP Record of Decision
September 12, 2006
Air Sparging (physical treatment, insitu)
Institutional Controls
Monitored Natural Attenuation
Monitoring
Vertical Engineered Barrier (slurry wall)
06 OU6 Record of Decision
September 30, 1997
Air Stripping (P&T, exsitu)
Discharge (surface water/NPDES discharge)
Institutional Controls
Monitored Natural Attenuation
Monitoring
Off-gas Treatment (other, NOS)
Treatment (other, NOS, exsitu, onsite)
06 OU6 Explanation of Significant Differences
September 18, 2007
ESD/Amd - ARAR(s) Change
ESD/Amd - Remedy Component Removal
ESD/Amd - Remedy Element Addition/Modification
Pumping
Treatment (other, NOS, offsite)
06 OU6 Explanation of Significant Differences
February 19, 2014
Discharge (POTW)
ESD/Amd - Remedy Component Removal
07 OU7 Record of Decision
September 28, 1995
Institutional Controls
Monitoring
No Action
08 OU8 Record of Decision
September 30, 1997
Data not available
08 OU8 Record of Decision
August 05, 2005
Extraction (recovery/vertical well)
Hydraulic Control (containment)
Institutional Controls
Monitored Natural Attenuation
Monitoring
08 OU8 Explanation of Significant Differences
August 23, 2010
ESD - Nonfundamental Change (other)
09 800 AREA, 1100 AREA, GOLF COURSE, PONDS Record of Decision
September 23, 2015
Bioremediation (anaerobic, insitu)
Bioremediation (bioaugmentation, insitu)
Disposal (offsite)
Excavation
Institutional Controls
Monitored Natural Attenuation
10 WEST GATE AREA PLUMES Record of Decision
September 23, 2015
Bioremediation (anaerobic, insitu)
Institutional Controls
Monitored Natural Attenuation
11 BASE GAS STATION Record of Decision
July 21, 2015
Air Stripping (P&T, exsitu)
Carbon Adsorption (liquid phase, P&T, exsitu)
Discharge (POTW)
Extraction (recovery/vertical well)
Filtration (P&T, exsitu)
Free Product Recovery (active or passive, excluding MPE and bioslurping)
Institutional Controls
Monitored Natural Attenuation
Monitoring (NAPL)
Monitoring (groundwater)
Treatment (other, NOS, insitu)
12 ROY PLUME Record of Decision
September 30, 2008
Cover (soil)
Disposal (offsite)
Excavation
Hydraulic Control (containment)
Institutional Controls
Monitored Natural Attenuation
Monitoring
Permeable Reactive Barrier (chemical reactive wall, passive treatment wall, etc.)
13 PCB Record of Decision
April 15, 2014
Disposal (offsite)
Excavation
Institutional Controls
14 MMRP No decision document
15 INDOOR AIR PROGRAM No decision document

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