The work on this construction project consisted of the ...read more »removal of an existing bridge constructed with large timber components and the construction of a large cast in place retaining wall, structural fill and new roadway to take the place of the existing bridge. The project site was located downstream of the Hoover Dam adjacent to the Colorado River. Due to the fact that the existing bridge was critical to allowing access to the Colorado River for local concessionaires, careful planning and coordination was required to allow continuous access throughout the removal of the existing bridge and construction of the new features. Permanent construction required excavation of existing rock features, construction of reinforced concrete slope protection steps, construction of a reinforced concrete retaining wall up to 25' tall, construction of a reinforced concrete roadway, installation of drainage structures, installation of precast vehicle barriers and placing and compacting aggregate base and surfacing materials. The site is approximately 8 miles northeast of Boulder City, Nevada and 32 miles southeast of Las Vegas, Nevada in Clark County. « read less
The project consisted of erosion work at Mead substation whi...read more »ch sustained erosion damage throughout the site near Boulder City, NV. Site Work Solutions installed a drainage system as well as bringing in additional material, riprap and compaction. Removal of existing temporary rip rap and soil were implemented before new rip rap and soil were installed. The existing fence was removed and replaced with new fencing. A delapidated cable trench was removed and replaced with new cable trench. Erosion repair of the existing flow line was successfully implemented.
During construction of the erosion repairs at Mead Substation, WAPA modified the original scope of work to include emergency repairs to the water line servicing the substation. Repairs included replacement of an existing section of leaking transite pipe with ductile iron, replacement of failing pressure reducing valves, along with replacement of over 3,000 feet of PVC water line. « read less
This task order includes road linear grading and maintenance...read more » and rehabilitation work on roads, campgrounds, and trailhead parking areas on the Boulder Ranger District. The task order will work through a priority list and work will proceed as far as time and materials allow. Work items will be marked on a map, on the ground, and/or directed by the engineer. Typical maintenance items include but are not limited to: linear grading, filling potholes, pulling ditches, lead-out ditches, re-establishing drainage (rolling dips and grade dips), constructing new drainage (rolling dips), hauling and placing road base, hauling and placement of stockpiles barrier rocks, excavation for bog areas, furnishing and placement of geotextile materials. Barrier rocks will be government furnished items. « read less
This task order includes road linear grading and maintenance...read more » and rehabilitation work on roads, campgrounds, and trailhead parking areas on the Boulder Ranger District. The task order will work through a priority list and work will proceed as far as time and materials allow. Work items will be marked on a map, on the ground, and/or directed by the engineer. Typical maintenance items include but are not limited to: linear grading, filling potholes, pulling ditches, lead-out ditches, re-establishing drainage (rolling dips and grade dips), constructing new drainage (rolling dips), hauling and placing road base, hauling and placement of stockpiles barrier rocks, excavation for bog areas, furnishing and placement of geotextile materials. Barrier rocks will be government furnished items. « read less
Project Description:
The scope of work for the project incl...read more »uded concrete spall repair at eleven large and three small damaged areas of the face of fourteen panels of the retaining walls. Repaired six damaged buttresses along both sides of the road that had been damaged due to corrosion and vehicular damage. Repaired twelve damaged W6x12 beams along both sides of the road. W6x12 beams are primary structural components of the buttresses that extend vertically from the tops of buttresses to support the guard rail system due to vehicular damage. Replaced 1000 feet of guardrails due to vehicular damage. Repaired 1300 linear feet of top portion of retaining walls due to corrosion and vehicular damage. « read less
This project consists of the design and construction of a fi...read more »xed fishing pier at Contact Point on Lake Havasu. Contract requirements specified a handicap accessible prefabricated aluminum fishing pier with shoreline concrete abutment, gangway, custom fishing pier deck, support piles, guardrails and handrails. Pile driving and placement of prefabricated pier sections was performed with a mobile barge. « read less
1.01 SCOPE OF WORK: Furnish all labor, materials, equipment,...read more » and supervision necessary to repair the wastewater disposal system for the Lake Area restroom facilities off south Pennsylvania Avenue on USCG TRAINING CENTER Petaluma. The work includes, but not limited to the following:
Scope of work included installation of a new duplex grinder pump lift station and pipeline to transfer sewage from the Teen Center (building 813) and Lake Area Restrooms (building 811) to the nearest existing sewer manhole. A small fenced enclosure was constructed around the pump facility and a new electrical power source was created. The new sewer line was adjacent to various utilities in the area, crossed a large RCP culvert which required shallow burial of the forced sewer line, a 2” water line which required deeper burial and use of a sleeve, a CMP culvert that required deeper burial to pass under the culvert, and a 30” RCP culvert that was within 7 feet from the manhole. After the last culvert, the 2” HDPE forced line transitioned to 4” PVC sewer pipe to be graded to a drop leg to be installed inside the manhole. Along Pennsylvania Ave. the line ran parallel to 12Kv power, a street light circuit, and phone and cable ducts. Once completed and startup of the new lift station was conducted, the old septic tank (structure 814) shall was exposed, rinsed and pumped out. The inflow and outflow pipes and risers were disposed of and the concrete shell was filled with sand and then covered with soil from excavation graded to match surrounding slopes. « read less
This project consisted of emergency erosion control pro...read more »tection along the natural channel banks between the existing access roads and the Glen Canyon Switchyard slopes located near Page, AZ. Erosion repairs consisted of engineered fill, structural gabion basket retaining walls, culvert installation, precast traffic barrier installation, protection of exposed utilities with PVC sleeves, repair of security fencing, placement of concrete drainage inlets and headwalls, placement of rip-rap slope protection, and replacement of 330 lineal feet of 2" HDPE water pipe. « read less
Exira Repeater Metal Building and Asbestos Removal Job 82
Project consisted of removing and disposing one 12&rsqu...read more »o; x 12’ metal building and all building contents and debris including asbestos containing material (ACM). The Asbestos containing material consisted of black mastic around the HVAC vents, black base cove and associated glue in the interior of the building, black joint sealant in the roof joints, gray exterior HVAC backing, black seam sealant between the concrete slab and the metal building (visible around the exterior of the building), and brown penetration sealant around the exterior penetrations. « read less
Work performed under this Design-Build contract includes mul...read more »tiple parts in order to increase security of a high voltage WAPA switchyard and adjacent maintenance facility. Major work activities include reconfiguring the main entry to the Tracy Maintenance Facility (TMF), installation of vehicle cable barrier along the fence lines, Installation of three new crash rated pivot gates and one new crash rated sliding gate, installation of a new guard booth as well as all utility upgrades required to service the new security measures.
« read less
The work on this project consisted of the construction of a ...read more »cast in place concrete foundation and the installation of a solar light pole at the NIST Boulder Campus. In order to complete the work a 3' diameter hole was augered in an existing landscaped planter area adjacent to a parking lot and heavily trafficked walking path. Once the hole was augered, a rebar cage and anchor bolt assembly was anchored in place along with footing formwork. Concrete was placed and finished, and once cured the solar light pole was set in place and fastened to the anchor bolts. « read less
The project consisted of the following general sco...read more »pe of work:
Provide all labor, tools, materials, supervision, coordination, and work plans necessary to:
Upgrade the STC rating of the East and South walls of room 174 and the south walls of rooms 183,188, & 189, remove existing modular furniture and send to storage, provide six new modular cubicles and six new stand up work stations.
The Government requested for the schedule to be compressed as much as possible to minimize disruption of government operations.
Work on site consisted of decommissioning and removal of the existing CO2 suppression system from room 174 and associated locations. Providing design planning and layout services for the configuration of the new standup work stations and cubicles. The designer collaborated with each end user for optimal cubical layouts. Data, phone, and electrical service were disconnected and then reconnected after cubicle layout modification using the same circuits. A large window panel, door and frame were removed and filled in with gypsum board to better optimise the workstation layout. Moving support services were provided to move storage racks, stored products, cubicles and cubicle contents as necessary to perform the work of the project. Barrier protection around construction area was installed to prevent the escape of dust, dirt and debris from the construction area into the adjacent spaces. All walls affected by construction were patched, textured and painted to match existing walls. « read less
Work performed under this contract consisted of multiple par...read more »ts and phases including distinctly different scopes of work, as follows:
1. Re-commissioning of an existing vehicle wash station including the design and installation of a closed loop washing system that would include pumps, controls, filtration, rain controls, alarms, and piping. This new system is able to completely recycle and filter 100% of water used for washing vehicles and equipment, rather than disposing of wash water in a septic system. As the system can be filled by rain water run-off, the impact on the municipal water supply is almost completely eliminated by this new system.
2. Removal of three (3) existing power operated chain link gates and operators and providing three new crash rated gates with hydraulic pivot operators.
3. Removal and replacement of failed maintenance facility asphalt paving and base course and construction of site drainage enhancements.
4. Repair and recoating of the roof of the Elverta Substation control building and tech shop, which consists of the removal of existing roofing materials (including built-up roof sections, EPDM roof sections, and tin perimeter top caps), coating of entire roof surface with a multi part silicone waterproof sealant followed by the installation of new perimeter caps and trim. « read less
The scope of work for the project included removal and ...read more »reinstallation of conductors, conductor insulator assemblies, overhead ground wires, and overhead ground wire assemblies on the Tracy-Los Banos transmission line between the 500-kV approach tower and 500-kV take-off structure type II. All of this work was required to replace and or repair the structural steel members of the take off structure and approach tower.
The existing beam on the 500-kV take-off structure type II was removed and replaced with a Government-furnished repair beam. The existing column leg weld defects were repaired and Government-furnished gusset plates were welded to the take off structure as well as the approach tower to ensure structural integrity.
Magnetic particle testing was conducted on all of the existing welds on the 500-kV take-off structure and approach tower to confirm that they were all structurally sound. Areas that were determined to not be structurally sound or corroded on the 500-kV take-off structure and approach tower were wire brushed, welded and then painted with zinc rich paint.
After all of the welding and repairs were complete, insulators were added to the 500-kV take-off structure type II insulator assemblies, the jumpers were replaced and extended from the transmission line to the substation bus at the take-off structure as well as from the transmission line to the surge arrestors at the take-off structure. Extension hardware was also added to the south side 500-kV approach tower insulator assemblies and jumpers at the south side of the 500-KV approach tower were replaced. When the added vibration dampeners were installed to the span between the take-off structure and the approach tower and all other assemblies were in place, the lines were restrung. After close inspection by SWS, subcontractor and WAPA inspectors it was deemed safe to reenergize the line.
The completion date for this project was requested to be accelerated by approximately three weeks and with the cooperation of all parties the project was able to complete ahead of schedule without any additional cost to the end user. « read less
The Engineering, Maintenance and Support Services Division (...read more »EMSS) of NIST has a requirement to replace circuit breakers in Buildings 3A, 11, 22 (Option), 23, 24 (Option), 25, 26, 27, and the Upper Site Switchboard. It is a goal of this contract to provide continued 24/7/365 day operation of our laboratories with zero interruption and down time to our technical program requirements. Normal business hours are Monday through Friday, between the hours of 7:00 am and 5:00 pm. « read less
