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Solid Waste Management Unit B-24
Chronology of Actions/Investigations
Year
Month
Action/ResultsAction
Performed ByProject
NumberUnknown
Unknown
Four trenches used to dispose of spent ammunition, small spent rockets, and other metal scrap.
CSSA
NA
1993
September
Area visually identified during field survey.
Parsons ES
Order 71
1995
March
EM geophysical survey performed on March 8 and 10; three anomalies found (four disposal trenches).
Parsons ES
Order 67
1997
March-September
UXO recovery work conducted. To remove UXO, material in four trenches was excavated and sifted. Approximately 5,485 cubic yards of soil was sifted and stockpiled onsite.
Parsons ES
UXBRL33
June
Preliminary soil sample collected to identify contaminants at the site. Analytical results are currently in question due to ITS Laboratory practices.
Parsons ES
UXB
ITSRL33
Work Plan for B-24 Investigation submitted.
Parsons ES
RL33
1999
January
Addendum to Work Plan for interim measures submitted.
Parsons ES
RL74
April
EPA memorandum indicated analytical results obtained from ITS are not usable.
EPA
NA
November
Submitted work plan for resampling to replace analytical chemistry data generated by ITS Laboratory.
Parsons ES
NA
2000
March
Advanced 5 soil borings and collected 15 soil/rock samples for VOCs, SVOCs, metals and explosives.
Parsons ES
APPL, Inc.
Data ChemRL33
April
Collected 10 sift samples for VOCs, SVOCs, metals and explosives analysis.
Parsons ES
APPL, Inc.
Data ChemRL33
Collected 18 sift samples for VOCs, SVOCs, metals and explosives (3 samples) and metals only (15 samples).
Parsons ES
APPL, Inc.
Data ChemRL83
2001
January
Three additional soil samples collected from stockpiled soils were analyzed for the leachability of contaminants.
Parsons
RL33
2002
May
Final RCRA Facility Investigation Report submitted.
Parsons
NA
2008
June
Collected 14 surface soil samples for arsenic, cadmium, copper, nickel, zinc, barium, chromium, mercury, and lead analysis.
Parsons
DY01
2009
April
Site mowed to allow access for geophysical equipment. Geophysical survey preformed, numerous anomalies found over entire site.
Parsons
DO11
2010
April
Conducted MEC Hazard Assessment to evaluate the relative degree of hazard associated with the current site condition and for use in evaluating potential site closure options.
Parsons
DO50
June
Performed XRF analysis at the site to determine the extent of metals in surface soils.
Parsons
DO50
December
Performed XRF survey. Parsons
NA
2011
February
Collected samples from soil overage pile and sifted through overage pile for MEC. Parsons
NA
March
Moved overage pile to East Pasture berm and collected surface soil samples at site. Parsons
NA
2012
February
SWMUs B-2, B-8, B-20/21, and B-24 were combined with RMU-1 as part of the active firing range. These sites will be investigated, remediated, and closed when the firing range is no longer active. USEPA Memorandum dated February 29, 2012.
USEPA
NA