[Federal Register Volume 60, Number 151 (Monday, August 7, 1995)]
[Notices]
[Pages 40170-40171]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-19395]
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DEPARTMENT OF ENERGY
Floodplain/Wetland Involvement Notification and Statement of
Findings for a Proposed Removal Action at the Weldon Spring Site, St.
Charles Co., Missouri
AGENCY: Office of Environmental Management, Department of Energy (DOE).
ACTION: Notice of floodplain/wetland involvement and statement of
findings.
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SUMMARY: The U.S. Department of Energy (DOE) is proposing to conduct a
removal action at the Weldon Spring site to remove radiologically
contaminated soil from a vicinity property within a floodplain and
wetland located within the heavily used State of Missouri Weldon Spring
Conservation Area. The proposed action will eliminate any potential
risk to the health of recreational users of the conservation area. In
accordance with 10 CFR Part 1022, DOE has prepared a floodplain and
wetlands assessment. The proposed action will be performed in a manner
so as to avoid or minimize
[[Page 40171]]
potential harm to or within the floodplain and wetland. Because of the
location of the contaminated soil, there is no practicable alternative
to the location of this action within the floodplain and wetlands.
Because of the potential risk to human health and the environment, the
DOE has combined the Notice of Involvement with the Statement of
Findings in this Federal Register Notice.
FOR FURTHER INFORMATION ON THIS PROPOSED ACTION OR TO COMMENT ON THE
ACTION CONTACT: Mr. Steve McCracken, U.S. Department of Energy, Weldon
Spring Site Remedial Action Project, 7295 Highway 94 South, St.
Charles, MO 63304, (314) 441-8978.
FOR FURTHER INFORMATION ON GENERAL DOE FLOODPLAIN/WETLAND ENVIRONMENTAL
REVIEW REQUIREMENTS CONTACT: Carol M. Borgstrom, Director, Office of
NEPA Policy and Assistance, EH-42, U.S. Department of Energy, 1000
Independence Ave., SW., Washington, DC 20585, (202) 586-4600 or (800)
472-2756.
SUPPLEMENTARY INFORMATION: The DOE is conducting response actions at
its Weldon Spring Site under the direction of the DOE Office of
Environmental Management. The Weldon Spring site is located in St.
Charles County, Missouri, approximately 48 km (30 miles) west of St.
Louis. As part of the overall cleanup of the Weldon Spring Site, the
DOE is proposing to conduct a removal action at an area referred to as
Vicinity Property 9 (VP 9). VP 9, which contains a small wetland area
no larger than 1.5 acres, occurs within the 100-yr floodplain of the
Missouri River, and is located within the heavily used State of
Missouri Weldon Spring Conservation Area.
The proposed action is necessary to remove radioactively
contaminated soils within VP 9 that poses a potential risk to the
health of recreational users of the conservation area. Because of the
urgency to conduct this removal and in order to optimize resources that
are immediately available (i.e., equipment and crew currently are
conducting bulk waste removal in the immediate vicinity) in the nearby
quarry area, the DOE has waived the 15-day public comment period for
this notice of involvement, as permitted under Section 1022.18c of 10
CFR 1022. Further information is available from the DOE at the address
shown below.
In accordance with the DOE regulations for compliance with
floodplain/wetlands environmental review requirements (10 CFR 1022),
the DOE has prepared a floodplain and wetland assessment describing the
effects, alternatives, and measures designed to avoid or minimize
potential harm to or within the floodplain and wetland, and has
determined that the proposed removal action will not impact floodplain
storage. Impacts to the wetland will be temporary and will not affect
long term wetland function. Further information on the floodplain and
wetland assessments is available from the DOE at the address shown
below.
The DOE proposes to remove radiologically contaminated soils from
VP 9 by excavating soils to a depth of approximately 1 ft from an area
of approximately 180 ft x 380 ft (1.5 acres) in size. Prior to
excavation, vegetation at the area would be cleared by grubbing, and a
temporary excavation equipment access ramp to VP 9 would be installed.
Good engineering practices such as hay bales and silt fences would be
employed to control sedimentation and erosion to nearby surface waters
and adjacent floodplain areas. Excavation would be accomplished using
standard excavation equipment (e.g., backhoe), and the contaminated
soils would be transported to the Weldon Spring chemical plant area for
treatment and subsequent disposal. Following completion of the proposed
action, the equipment access ramp would be removed and all excavated
areas would be backfilled with clean fill, graded to original contours,
and revegetated with native species previously occurring at the site.
The no-action alternative with institutional controls was also
evaluated. The no-action alternative is not acceptable because (1) The
potential risk to human health from the contaminated soils would return
in the event of loss of institutional control, (2) recreational
activities at the conservation area would be disrupted, (3) potential
risk to the environment would be largely unaffected by institutional
controls, and (4) natural flood events could transport the contaminated
soils to other portions of the floodplain and conservation area.
Because of the potential risk to human health and to the environment,
the DOE finds that there is no practicable alternative to the location
of the removal action in the floodplain and wetland, and wishes to
expedite the proposed removal of the contaminated soil and complete the
removal action in as timely a manner as possible.
The proposed action would conform to applicable federal, state, and
local floodplain and wetland protection standards. Impacts to the
floodplain and wetland would be minimized by the avoidance (to the
extent practicable) of adjacent floodplain and wetland areas, and
through the use of good engineering practices for sediment and erosion
control. No impacts are anticipated to the 100-yr floodplain of the
Missouri River. The removal of contaminated soils from VP 9 would not
impact the storage capacity of the Missouri River floodplain. No
permanent structures that could displace flood storage capacity would
be constructed as part of the proposed action. Potential impact to the
wetland would be restricted to removal of hydrophytic vegetation
species that would be replaced following completion of the removal
action. Upon completion of the action, the equipment access ramp would
be removed and the excavated area would be backfilled and graded to
original contours to restore the pre-excavation flood-storage capacity
of the area.
Robert W. Poe,
Assistant Manager for Environment, Safety, and Quality.
[FR Doc. 95-19395 Filed 8-4-95; 8:45 am]
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