Appendix M: Installation Narrative Summaries - denix

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In 1941, the Army constructed the Iowa Army Ammunition Plant
(AAP) to load, assemble, and pack various conventional
ammunition and fuzing systems. During operations, industrial
process wastewater and by-products were disposed at the
installation. Site types include surface impoundments,
production areas, landfills, and a fire-training pit. Soil and
groundwater contamination resulted primarily from disposal of
explosives and heavy metal-containing wastes directly onto the
soil. The installation also identified small amounts of
contamination by volatile organic compounds (VOCs). The
installation has three operable units (OUs): soil (OU 1),
groundwater (OU 3), and overall (OU 4). EPA placed Iowa AAP
on the NPL in August 1990, and the installation signed an
interagency agreement (IAG) in December 1990. Restoration
activities through FY00 included closing one cell in the inert
landfill, removing aboveground treatment tanks, removing
lead-contaminated soil from a production line, and cleaning up
an abandoned coal storage yard. The Army excavated and
incinerated pesticide-contaminated soil off-site, excavated
explosives-contaminated sumps, removed contaminated soil,
and capped five landfill cells. The installation funded a project
connecting local residences to a public water supply.
Contaminated soil was removed from around production
buildings at Lines 5A/5B and the West Burn Pads Area.
Evaluations related to past Atomic Energy Commission
activities have been conducted. The installation was placed in
the NPL in August 1990, and signed an interagency agreement
(IAG) in December 1990. The installation formed a Restoration
Advisory Board (RAB) in FY97. The Army completed a 5-year
review in FY05.
Environmental studies have identified 52 sites at the
installation. Of those sites, 42 require further action. To date,
the installation has completed one interim Record of Decision
(ROD) and one final ROD to address soil contamination. Three
Atomic Energy Commission sites have been accepted into
Formerly Utilized Sites Remedial Action Program (FUSRAP).
The cleanup progress at Iowa AAP for FY02 through FY05 is
detailed below.
In FY02, the Army removed soil contaminated with VOCs from
the former fuel station. Congress designated the installation for
inclusion into the FUSRAP to address impacts from former
Army
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Atomic Energy Commission industrial activities. Funds were
provided to conduct an aerial radiological survey. The Army
continued to study off-post groundwater and prepared the
remedial investigation (RI) activities for the Line 800 pink water
lagoon. The Army completed the metals treatment for soil from
the west burn pads area.
In FY03, the installation continued the off-post groundwater
characterization and completed a supplemental soil removal at
the fire-training pit. The Army initiated an inventory of closed,
transferred, and transferring (CTT) ranges and sites with
unexploded ordnance, discarded military munitions, or
munitions constituents.
In FY04, the Army awarded a performance-based contract to
address the entire Installation Restoration Program (IRP) effort
at Iowa AAP. The Army resolved the formal dispute with EPA.
The installation removed soil contaminated with VOCs from the
former fuel station and received a NFA certificate from the State
of Iowa. The Army completed the Phase IV soil removal at Line
9. The installation determined that Lines 4A/B, Line 8, and the
Roundhouse Polychlorinated Biphenyls (PCBs) Site required
NFA during Phase IV soil efforts. The Army released the
proposed plan for off-post groundwater for public review and
also submitted the draft ROD to regulators. The Army
completed the CTT range and sites inventory. The Army has
identified three Military Munitions Response Program (MMRP)
sites at this installation. The installation's RAB received training
on hydrogeology, radiological contaminants, and ecological risk
assessments (ERAs).
In FY05, the installation completed the remedial design (RD) for
OU 1 and supplemental RI sampling for OU 4. Additionally, the
installation conducted the off-site groundwater pilot study and
began the on-site groundwater treatability study. The Army
completed the first 5-year review. The installation's RAB
received training on endangered species, well monitoring, and
the CERCLA process. The RAB also reviewed project activities.
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Iowa AAP continued soil treatment at Site IAAP 020 and
completed the on-site groundwater treatability study. The
baseline ERA was also completed. The Army implemented
Bush Creek point source controls.
Technical issues delayed the RD for off-installation
groundwater. Regulatory issues delayed the supplemental RI
for OU 4 soils. Scheduling issues delayed soil removals at OU
1.
The RAB reviewed project activities and provided stakeholder
input.
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Iowa AAP initiated site inspections (SIs) at three MMRP sites.
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Plan of action items for Iowa Army Ammunition Plant are
grouped below according to program category.
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0 Complete OU 1 soil removal in FY07.
0 Complete RD for OU 3 off-site groundwater in
FY07.
0 Implement RA for OU 3 off-site groundwater in
FY07.
0 Complete explanation of significant
differences to merge OU 4 soils into OU 1 in
FY07.
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0 Continue SIs at three MMRP sites in FY07.
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