The work covered by this subcontract is located on the U.S. Department of Energy’rsquo;s Oak Ridge National Laboratory Spallation Neutron Source construction site and adjacent to the Oak Ridge National Laboratory East Campus Parking Lot, Roane-Anderson counties, in the state of Tennessee. The work, among other activities, consisted of installation of electrical and telecommunications ductbank systems; installation of water distribution systems; installation of natural gas distribution system; installation of sanitary sewer system; installation of a new sanitary sewer lift station; installation of manholes and other structures; relocation of an existing 24” water line main and reconnection to tie-in points along the exiting system; systems start-up; and the backfilling of installed utilities and structures.
Avisco, Inc. was contracted through Heery International, Inc. to perform the final site grading and development third phase of construction on the Tennessee Office Building located on the U.S. Department of Energy's Oak Ridge National Laboratory (ORNL) campus in Oak Ridge, Tennessee. As part of ORNL’s modernization plan and through an innovative public-private partnership, UT-Battelle, LLC selected Colliers Keenan and Heery International, Inc. to design and construct the Tennessee Office Building for future ORNL occupancy. Avisco’s overall scope of work included final site grading, roadway construction, backfilling the perimeter of the building structure, installation of sanitary sewer lines and structures, installation of storm drainage and structures, and seeding and mulching for the Tennessee Office Building site.
Avisco, Inc. was awarded a contract by Caddell/Blaine Joint Venture to perform building backfill, utility installations and final site grading for the Y-12 National Security Complex’s new uranium storage facility, the Highly Enriched Uranium Materials Facility (HEUMF). As part of Y-12 National Security Complex’s modernization plan, Avisco’s overall scope of work on this phase of the HEUMF project consisted of sequenced foundational stone backfill of the deep building foundation excavation; installation of sanitary sewer lines and structures; installation of storm sewer lines and structures; sequenced trench excavations, bedding, and backfill of chilled water supply and return lines, heated water supply and return lines, telecommunication and electrical ductbanks, water and fire distribution systems, and process piping systems; access road construction; final site grading; security fence installations; and installation of permanent vegetation.
Spallation Neutron Source Conventional Facilities - The U.S. Department of Energy (DOE) Office of
Science has funded the construction of a new, accelerator-based neutron source, the Spallation
Neutron Source (SNS), which will provide the most intense pulsed neutron beams in the world for
scientific research and industrial development.
This project consists of the complete installation of intricate series of site utilities for the entire SNS project. Avisco’s overall scope of work included installation of erosion control; massive trench excavations; chilled water supply and return lines, heated water supply and return lines, and process piping; domestic water distribution system; fire water distribution system; water pump station; natural gas distribution system and natural gas facility installation; deep sanitary sewer lines and structures; sanitary sewer lift station; deep storm sewer lines and structures; electrical and telecommunication distribution systems and connections; systems testing and start-up; and the backfilling of installed utilities and structures.
The work on this project was divided into three categories: 1.) Demolition of concrete foundations and removal of contaminated soil, 2.) Construction of underground utilities, and 3.) Construction of roads and final restoration. Avisco performed the installation of 10,850 LF of sanitary sewer pipeline, 8,600 LF of storm sewer pipeline, 12,400 LF of water main, 11,000 LF of electric duct, and 11,000 LF of communication duct. All materials (33,850 LF of pipe, 42,000 Tons of road base, etc.) were brought in to this residential area under the strict traffic control regulations and logistical requirements of the Base Commander.
Avisco provided site preparation for a future storage facility consisting of six 100,000 gallon stainless steel storage tanks in a containment vault at the X-10 Plant of the Department of Energy. The work consisted of foundation excavation, transportation of clean soil as well as radioactive contaminated soils, storm drainage, fire water and potable water lines, foundation drain piping, electrical duct bank excavation, and permanent erosion control systems.
Avisco, Inc. cleared, grubbed and disposed of the debris on this project which consisted of approximately 920 acres. The contract performance period for Avisco was six months. The actual performance period was five months which provided the prime contractor with an early start on major portions of the work without weather delays.
Avisco developed the entire site for a new chemical plant which included clearing and grubbing, excavation, access road construction, extensive site grading, a storm drainage system, water and sewer systems, railroad spurs, erosion control and seeding, and modifications to an existing water treatment plant.
This project required clearing and all site preparation for the extension of an existing runway at Knoxville’s McGhee Tyson Airport. Avisco poured and formed the concrete for a paved ditch, built a retaining wall, several large headwalls and seeding and mulching for erosion control.
Avisco provided support to Nicholson/Hayward Baker Joint Venture for the installation of the Target Building Micro Piles. Avisco’s scope of work included removal of drill/grout spoil material, installation of geotextile and placement of stone work mat and removal of the same after pile installation, construction of an access road 30“ deep, 300' long and 50' wide, and construction of a stone mat for the plant area. Avisco also provided approximately 40,000 gallons of non-potable water per day to a storage tank.
Avisco performed the excavation of the egress stairwell adjacent to the LINAC Tunnel, excavation and placement of fiber reinforced pipe, and backfill as required for the complete installation of the transfer pipe chases from the south side of the LINAC tunnel to the CHL facility. Included in the scope of work was the placement of 225 cubic yards of stone for the bedding and backfill of the pipes.