Appendix M: Installation Narrative Summaries - denix

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In 1995, the BRAC Commission recommended realignment of
Sierra Army Depot (AD). The 2005 BRAC Commission also
recommended Sierra AD for realignment. The Army and EPA
signed a federal facility agreement (FFA) in May 1991. The
Army identified approximately 64,996 acres as excess.
Contamination at the depot originated from burn trenches,
explosives leaching beds, landfills, burial sites, spill sites,
sewage lines, underground storage tanks, sumps, and fire
training areas. Primary contaminants in soil and groundwater
include trichloroethylene (TCE), petroleum products, and
explosives. Investigations identified 23 sites; 12 sites required
no further action (NFA). In FY96, the installation formed a
BRAC cleanup team. The latest version of the BRAC cleanup
plan was published in FY97. In FY97, the installation
established a Restoration Advisory Board (RAB). The
installation completed 5-year reviews in FY02 and FY06.
To date, Records of Decision (RODs) address 21 sites.
Ongoing operations include groundwater enhancement at four
sites and a soil vapor extraction system at the Defense
Reutilization and Marketing Office (DRMO) Trench Area. The
installation completed a property transfer in FY99, to the
Federal Bureau of Prisons. The Herlong Parcel, Honey Lake,
and the ordnance and explosives (O&E) clean portion of the
Airfield and East Shore parcels were transferred in FY03. The
Susanville Road, Cross Depot Access parcels, and 885
additional acres were transferred in FY04. The installation
transferred 136 acres of the East Shore area in FY05. The
Army has transferred approximately 62,636 acres to date. The
cleanup progress at Sierra AD for FY02 through FY05 is
detailed below.
In FY02, the Army completed the 5-year review of monitored
natural attenuation (MNA) at the TNT area and completed
bioventing at the Diesel Spill Area. The Army initiated an
inventory of closed, transferred, and transferring (CTT) ranges
and sites with unexploded ordnance, discarded military
munitions, or munitions constituents. The Army completed a
draft engineering evaluation and cost analysis (EE/CA) project
design for the BRAC East Shore and Airfield parcels.
In FY03, the installation completed the vegetation survey of
Honey Lake and a protocol survey for the Carson Wandering
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Skipper on two BRAC parcels (Cross Depot Access and Honey
Lake). The installation received concurrence from the U.S. Fish
and Wildlife Service and the State Historic Preservation Office
to transfer all BRAC parcels. The Army transferred the Herlong
Parcel, Honey Lake, and the O&E clean portion of the Airfield
and East Shore parcels. The Army awarded a guaranteed
fixed-price remediation (GFPR) contract that addressed all
open restoration sites at Sierra AD. The Army completed the
CTT range and site inventory for both the BRAC and active
sites, identifying 5 BRAC Military Munitions Response Program
(MMRP) sites and 11 active/closed MMRP sites at Sierra AD.
The RAB met three times to review the findings of suitability to
transfer for the Herlong Parcel, the O&E clean portion of the
Airfield and East Shore, and Honey Lake, the finding of
suitability to lease for the clean portion of Honey Lake, and the
Environmental Baseline Survey addendums for Susanville
Road and the Cross Depot Access Parcel.
In FY04, the installation completed the EE/CA and the
munitions and explosives of concern response action on 885
acres of the East Shore, Airfield, and North Cross Depot
Access parcels. The Army transferred the property with
completed response actions and the Susanville Road and the
Cross Depot Access parcels. The installation drafted the EE/CA
for the Honey Lake Demolition Area. The GFPR contract for all
active sites began. The Army initiated the MMRP site inspection
(SI).
In FY05, the installation completed a ROD for the Upper
Burning Grounds, Old Popping Furnace, and Building 79 Yard.
Biological enhancements were injected into the groundwater at
four sites. The Army completed the Honey Lake Demolition
Area EE/CA and the response action at the East Shore area,
and transferred the remaining 136 acres. The pump-and-treat
system and the soil vapor extraction (SVE) system continued
operations. The Army completed the MMRP SI for all inactive
sites, with the exception of the recently identified Upper Burning
Grounds Area. The installation renewed its RAB charter.
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The installation constructed two corrective action management
units at Hansen's Hole and the Old Popping Furnace. Sierra AD
conducted enhanced dechlorination at four sites and continued
SVE system operations. Sierra AD also completed soil removal
action at Building 79. The Army also completed 5-year reviews
at the DRMO site, and of MNA at the TNT area. The Army
received regulatory approval of the remedial action plan for the
Honey Lake Demolition Range. The cost of completing
environmental restoration has changed significantly due to
regulatory issues.
The regulators approved the Army's temporary discontinuance
of the operation of the pump-and-treat system to characterize
groundwater contaminant and plume movement.
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The installation completed the SI for seven MMRP active sites,
two of which required NFA.
Programmatic issues delayed the SI at the Upper Burning
Grounds Area.
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Plan of action items for Sierra Army Depot are grouped below
according to program category.
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0 Complete feasibility study for the Abandoned
Landfill in FY07.
0 Construct pilot SVE system at Building 210 in
FY07.
0 Complete ROD for the Abandoned Landfill in
FY08.
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0 Conduct SI at the Upper Burning Grounds Area
in FY07.
M-183