New Creek 14, Dam Rehabilitation Project
May 2012 Update
Crews are working around the clock at the New Creek Site 14 Dam
Rehabilitation Project. The current work includes: replacement of the reinforced
concrete riser intake structure, realignment and reinforcement of the auxiliary
spillway utilizing roller compacted concrete (RCC), and flattening of the
upstream and downstream slopes. The RCC placement occurs during the night shift
in an attempt to reduce concrete temperatures during placement.
The USDA Natural Resources Conservation Service (NRCS) awarded
the rehabilitation contract to Heeter Construction, Inc., from Spencer, WV, in
September 2010 funded under the American Recovery and Reinvestment Act of 2009 (ARRA).
Fifty to sixty workers are currently employed at the project. The contract value
to complete the rehabilitation work is approximately $10 million. Federal
funding (65%) for the project was provided to NRCS through ARRA. Local funding
(35%) was provided by the state and local sponsors—the West Virginia State
Conservation Committee and the Potomac Valley Conservation District. The City of
Keyser assisted NRCS with the reservoir drawdown prior to the start of
The contractor has installed erosion and sediment control
measures, surface and subsurface dewatering measures, the majority of the
downstream toe and chimney drainage system; flattened the downstream slope,
extended the downstream end of the principal spillway pipe 60 feet; completed
the subsurface grouting in the auxiliary spillway location; completed a
significant portion of the required excavation for the auxiliary spillway
improvements; removed most of the existing intake riser structure; placed two
pours on the new intake riser structure; and placed the majority of the rock
fill on the upstream slope of the embankment. Construction is estimated to be
completed late in 2012.
||The roller compacted concrete (RCC) delivery system is shown in this
picture. The on-road trucks deliver material to the site and unload the
material into a Gomaco rubber tracked belt placer. The Gomaco belt
placer then transfers the material to a Putzmeister Telebelt (telescopic
belt conveyor) which delivers the material to the placement location.
The contractor is utilizing this delivery system for the RCC placement
during the night shift and the fine and coarse aggregate placement
during the day shift.
||Workers apply water to the roller compacted concrete (RCC) surface
for proper curing of the concrete. Fine and coarse aggregates are placed
on the slope to provide drainage beneath the RCC.
||Air photo of New Creek 14 site. Photo by Tim Ridley.
On March 23, 2012 a prescribed, or controlled, burn at New Creek Site 14 was
conducted. The burn was part of the dam rehabilitation project mitigation plan
compensating for impacts to wetlands downstream of the dam. Most of the 9.1
acres of wetland are infested with reed-canary grass (Phalaris arundinacea)
and Autumn olive (Elaeagnus umbellate). Reed-canary grass commonly
infests wetland areas resulting in the displacement of native wetland plants and
the decline of wetland habitats.
The first construction year for the New Creek Site 14 Dam rehabilitation
project has recently ended. In September 2010 the rehabilitation contract was
awarded by USDA-NRCS-WV to Heeter Construction, Inc., from Spencer, WV. The
Notice to Proceed was issued in January 2011. Federal funding (65%) for the
project was provided to NRCS through the American Recovery and Reinvestment Act
of 2009. Local funding (35%) was provided by the state and local sponsors—the
West Virginia State Conservation Committee and the Potomac Valley Conservation
District. The city of Keyser assisted NRCS with the reservoir drawdown prior to
the start of construction.
||The Pendleton County Emergency Services assisted the City of Keyser
with the operation of the reservoir drawdown gate at New Creek Site 14
on Thursday, February 3, 2011. Pendleton County Emergency Services was
asked to assist in transporting a City of Keyser employee across the
frozen lake surface.
The drawdown gate was opened slightly on that day to continue the
reservoir drawdown to facilitate the dam rehabilitation.
||Subsurface investigation of Rehabilitation of New Creek Site 14
Dam. From left to right: Auxiliary spill way (ASW) foreground, top
of dam and barge mounted drill rig near intake riser.
||Drill rig on barge near intake riser doing subsurface
investigation of Rehabilitation of New Creek Site 14 Dam.
These document requires
Final Supplemental Watershed Plan – Environmental
Assessment For the Rehabilitation of New Creek Site 14 (5.33 MB)
For additional information in West Virginia
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