Arrowhead offers client's a diversified staff of professionalswith extensive experience across the complete spectrum of civil construction. In addition to traditional site preparation and utility installations, we have also supported the emerging missions of the U.S. Army Corps of Engineers and possess a diverse portfolio of assignments ranging in scope from restoration of critical wildlife habitat along the Missouri River, to the installation of state-of-the-art dam failure warning systems and security upgrades at large flood control reservoirs.
Arrowhead’s Civil Construction experience includes:
Under a NAVFAC Prime Contract, Arrowhead was awarded a fixed-price subcontract to implement construction activities associated with the restoration of the Truman Annex Refuse Disposal Area (IR-1 Landfill), located at Naval Air Station (NAS) Key West in Florida.
Located at the southwest end of Key West, the IR-1 Landfill covers approximately seven acres and one-quarter mile of shoreline. The area is currently utilized as a Navy antenna and communications facility. Hurricane Wilma, which struck Key West in October 2005, caused extensive damage to the landfill, including erosion of portions of the of the landfill cap, deep gouges that exposed buried waste materials, deposition of storm sediment on top of the landfill, wash out of the access roadway, displacement of rip rap from shoreline erosion control system, and destruction of the security fence. The work completed by Arrowhead restored the site to its pre-hurricane condition.
Construction activities included: removal and disposal of damaged fence debris, removal and relocation of sediment (deposited/displaced during the storm) from the top of the landfill, placement and compaction of 3,500 cubic yards of crushed limestone to construct new road sub base, placement of 30,000 square feet of geotextile beneath the new roadway, repairs to rip rap embankment along the one-quarter mile long shoreline, and placement and compaction of fill material to restore landfill cap. Arrowhead achieved the Navy's fast-track schedule to ensure that repairs were in-place prior to the start of the 2006 hurricane season. In addition, all work was performed under high-security conditions and required careful navigation of construction equipment around numerous above- and below-ground appurtenances (antennas, guy wires, satellite dish, observatory, sewer line, and cable trays).
In partnership with the Winnebago Indian Tribe of Nebraska, Arrowhead constructed a Wetlands Restoration and Fish & Wildlife Mitigation project at Glovers Point on the Missouri River. This project was performed as a firm-fixed price task order under contract with the USACE Omaha District.
The primary feature of this project was the construction of a 2.5-mile long pilot channel, which intermittently feeds a backwater oxbow adjacent to the Missouri River. Scope quantities included excavation of over 500,000 cubic yards of soil by mechanical excavators and hydraulic dredge. Placement of over 9,000 cubic yards of rip rap, 320 linear feet of 84-inch diameter RCP, clearing and grubbing 6 acres and re-seeding over 50 acres.
The project was located on the Winnebago Indian Reservation and executed in partnership with Tribally-Owned Ho Chunk Construction, Inc. Upon completion, the renovated wetland will ensure a safe haven and spawning habitat for the endangered Pallid Sturgeon, Sturgeon chub, and Lake Sturgeon.
As a Team Member under an AFCEE Prime Contract, Arrowhead was awarded a firm-fixed price subcontract to construct erosion control improvements at Whiteman AFB, Missouri.
The area in and around the construction site includes Brewer Branch Creek (an active creek channel serving a 275-acre watershed), the base hospital, and residential housing. The site represents an area used to dump material collected from flightline shops during the 1960s and 1970s.
The work completed by Arrowhead provided the Air Force with engineering controls to prevent future erosion of cover materials associated with Site LF-34 due to water flow through Branch Brewer Creek. The project entailed removal of existing dense vegetation, regrading of side slopes (which required relocation of waste material within the landfill limits), realignment and widening of 600 linear feet of the creek channel, installation of 20,000 square feet of Armorflex concrete revetment matting along the length of the creek and landfill embankment, restoration of eroded portions of landfill cap, placement of over 4,000 square yards of erosion control blanket material, and site restoration (including re-vegetation with native switch grass and live stakes). To facilitate construction activities, Arrowhead installed a temporary pipeline to divert water flow around the construction area for a three-month period.
NAS Key West
Glover Point Wetland Restoration
The primary feature of this project was the construction of a 2.5-mile long pilot channel, which intermittently feeds a backwater oxbow adjacent to the Missouri River. Scope quantities included excavation of over 500,000 cubic yards of soil by mechanical excavators and hydraulic dredge. Placement of over 9,000 cubic yards of rip rap, 320 linear feet of 84-inch diameter RCP, clearing and grubbing 6 acres and re-seeding over 50 acres.
