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Example
Projects - Civil
Construction |
Selected Project List:
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Levee Bank Repairs at Colusa Basin Drain -
Yolo County, CA |
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Repairs to Pier 23 at the Army Reserve Command
Facilities - Tacoma, WA |
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Levee and Detention
Pond Construction at Tres Rios Phase 1A - Phoeinix, AZ |
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Napa River/Creek Flood
Protection Project - Napa, CA |
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Dam Safety Improvements at Mud Mountain Dam -
Enumclaw
, WA |
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Levee Renovations,
Pedestrian Walkways, and Pedestrian Bridges at Smith Island - Everett, WA |
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Closing of Drug
Tunnels Along CA and AZ / Mexican Border - CA and AZ |
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Padres National Forest - Santa Ynez, CA |
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Levee and Detention
Pond Construction at Tres Rios Phase 1B - Phoeinix, AZ
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Levee
Bank Repairs at Colusa Basin Drain - Selena, CA
The
project consisted of performing levee bank protection as well as
establishment of habitat areas along five miles of the Colusa Basin Drain
in Yolo County, California. This project was the first of it's kind,
introducing a new and innovative bank-protection design features to meet
the needs of both the State of California Department of Water Resources
and US Fish and Wildlife Service.
The major design concerns associated with this project were the need to
provide bank protection from erosion caused by wavewash and high flood
conditions and also to provide a habitat for the Giant Garter Snake. The
five-mile section of the levee bank in question has been historically
damaged by erosion. A USACE contract to place riprap was halted via legal
action by the US Fish and Wildlife Service the previous year. There are
two known populations of Giant Garter Snake located to the south and north
of the Colusa levee site. Placement of riprap along the bank was
considered limiting to snake migration because of exposure to predators.
The new design called for placement of the riprap and then installation
appropriate snake habitat over the riprap. The habitat, consisting of soil
and a seeded plant community, also had to be able to withstand forces due
to wave action during high water levels.
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Repairs to Pier 23 at the Army
Reserve Command Facilities - Tacoma, WA
This
contract provided
renovations to Army Reserve Command Facilities at Pier 23, Tacoma, WA.
The project scope was to remove an existing sea wall, pilings, debris and
contaminated soils along the shoreline and then install a new sheetpile
seawall. Riprap and fish mix were placed on the exterior of the seawall and the interior of the seawall
was backfilled with imported soil to extend the shoreline and roadway. Site restoration included landscaping, asphalt and concrete areas.
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Levee
Construction at Tres Rios Phase 1A - Phoeinix, AZ
The scope of services for this project consisted of construction of a
1.4 mile compacted earth fill levee; armoring with 15-inch stone and
2" rock mulch protection; 3' aggregated base course operation and
maintenance roads; invert access ramps; 1.3 miles of trapezoidal
reinforced concrete channel; reinforced concrete box culverts; grouted
stone; a 14 acre foot catch basin; agricultural side drain connections;
guide dykes; four-wire right-of-way fence and gates; removal and disposal
of debris and incidentals; excavation, compacted fill and disposal of
excess or unsuitable/spoil material to mandatory disposal sites. |
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Napa
River/Creek Flood
Protection Project - Napa, CA
The scope of services for this
project consisted of excavation of marsh plain and flood plain terraces in
the east overbank of the Napa
River
from Imola Avenue
to New Tulocay Creek (approximately 1,300 linear feet (LF)).
This entailed excavating approximately 206,000 cubic yards (CY) of
material. Existing riverbank
stone protection and concrete rubble were removed.
Approximately 2,400 LF of new levee was constructed.
A portion of excavated material (75,000 CY) had elevated levels of
chromium and other metals and required special handling during on-site
disposal. The remaining
excavated material (131,000 CY) was used to construct levee embankment or
be disposed at the Gasser Disposal Area and the Ghisletta Area.
The excavated material below elevation 5 foot NGVD was within the
daily tidal range of the
Napa
River
and required special care and methods of excavation.
A portion of the excavated material was old fill and contained
construction debris that was screened and separated out.
Final excavated grades were seeded with native grass seed.
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Dam Safety Improvements at Mud Mountain Dam -
Enumclaw
, WA
This project was
for implementing
dam safety improvements along the right bank of Mud Mountain Dam on the
White River
near Enumclaw,
Washington.
The project
provides dam safety improvements along the right bank of the dam. The
work required drilled caisson wall, concrete retaining wall and concrete
lined ditch and road work, excavation and grading along a crib wall and
drainage pipe work and rock fall slope protection fencing.
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Levee
Renovations,
Pedestrian Walkways, and Pedestrian Bridges at Smith Island - Everett, WA
This
project entailed levee
renovations, pedestrian walkways, and pedestrian bridges for USACE
properties. The construction area is located on
Smith
Island
in the
Snohomish
River
delta, approximately 2 miles northeast of the City
of Everett, WA.
The
project limits are defined by area contained within 4 levees; the north,
south, east and west levees. The east levee (also called the union slough
pathway) borders the slough and will receive three breaches to accommodate
pedestrian bridges. The east levee will be raised to variable
elevations (above mean sea
level) per specification/design and will receive an asphalt top course. There will be no work
done to the eastern slope of the levee. The western slope will be graded
according to the plans and will receive 18” thick loose riprap to an
elevation of 9.5’. There is a ditch that runs along the east levee that
will be filled with appropriate fill material to an elevation of 5’. An
access ramp will be installed at the intersection of the east and north
levee. The north levee will be raised to a uniform elevation of 14.25’
and will receive a crushed stone top course. A two foot deep drainage
ditch will be installed along the north levee to the limits and lines of
the plans.
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Closing of Drug
Tunnels Along CA and AZ / Mexican Border - CA and AZ
This
project called for furnishing all labor,
material, equipment, supervision, transportation, permits, fees, licenses,
and all else necessary as required in connection with the construction of
the Southern Border Tunnel Filling FY2007 Task Order.
Work included, but was not limited to, site access holes, drill
holes, dewatering, and pumping of flowable fill into seven tunnels in
various locations in
California
and
Arizona
. Work included significant collaboration with
Customs and Border Protection officials.
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Los
Padres National Forest - Santa Ynez, CA
The project scope of work called for road construction
in the Los Padres National Forest.
Specifically the work included construction of four river crossings
of the Santa Ynez River along the Santa Ynez River Road.
Tasks included water diversion, excavation, and placement of
concrete stemwalls, backfilling, placement of concrete roadways, placement
of up and downstream grouted riprap and placement of asphalt.
Other activities included screening of materials from on-site
borrow sources to obtain required materials, coordination with government
wildlife biologists and dam operators regarding in-water field activities,
extensive stormwater preparation and maintenance during winter months,
disposal of waste materials, traffic control and protection of endangered
species.
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Levee and Detention
Pond Construction at Tres Rios Phase 1B -
Phoeinix, AZ
The scope of services for this project consists of construction of approximately
1.0 mile of
modification to the existing Holly Acres Levee with compacted earth
fill on 3H:1V landside slope and
2” rock mulch slope
protection, including 3”
aggregated base course operation and maintenance roads,
2 compacted earth-fill guide dikes, 27” diameter rip rap, gabion
mattresses, 3 invert access ramps, an approximate 1.0
mile of trapezoidal reinforced concrete channel,
one reinforced concrete box culvert,
several agricultural tail water irrigation canal connections,
grouted stone, asphalt, four
wire right-of-way fence; removal and disposal of debris and
incidental. Earthwork consists
of excavation, compacted fill and disposal of excess or
unsuitable/spoils material to mandatory disposal sites.
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