Precision Contracting

Larger Completed Projects

MOHAVE GENERATING STATION

Precision Contracting

Southern California Edison was the operator of the Mohave Generating Station (MOGS) in Laughlin, Nevada and managed the plant decommisisoning. MOGS was a 1,580 megawatt coal-fired electric power generation facility situated on 2,500 acres adjacent to the Colorado River. The facility contained 217 acres of storage ponds, evaporation ponds and a 300-acre landfill.

The scope of services included asset recovery, asbestos abatement, hazardous material collection and disposal, demolition, relocation of the pond contents to the onsite landfill and closure of the landfill. Asbestos abatement included the removal of friable and non-friable materials including boiler, tank and pipe insulation, floor tile and mastic, roofing transiteand other materials.

Precision Contracting

Hazardous material collection included the collection and disposal of machine oil, hydraulic fluids, PCB oil, mercury switches, light tubes, ballasts, batteries and other classified wastes. Pond closure included the relocation of 1.4MM CY of material to the on-site landfill and grading of the pond berms to match the surrounding grade.

Landfill closure included constructing a buttress, grading the area to meet the required slopes, installing back drains and surface drainage swales and placing a two foot drip cap over the entire landfill. The landfill closure also required the redesign of the closure documents to reflect an early closure of the landfill prior to reaching from a 10 foot high, 5,000 square foot building to a 180 foot high steel boiler structure with a footprint of 50,000 square feet.

Precision Contracting

Demolition included the removal of the two 790MW steam turbine units, a single 500’ tall 25’ diameter concrete and brick chimney, two 180’ tall power boiler structures and all associated equipment. Support structures included fifteen buildings totaling 100,000 square feet, six evaporation ponds covering 217 acres, eight marconaponds containing 24MM cubic feet, two 200’ diameter 20 foot tall clarifloculators, two 500,000 gallon condensate tanks, eight 60’ tall cooling towers totaling 64,000 square feet and various other lube oil and miscellaneous water tanks.

The demolition also included the removal of the slabs and foundations of all structures other than the power block, cooling water channel; 330’ of 14’ diameter underground cooling water pipes; as well as backfill and compaction required to restore the site to its natural contours.

Precision Contracting

The project generated over 40,000 tons of ferrous scrap materials which were sorted, sized, and shipped by truck to local scrap recycling facilities. Additionally 1,200 tons of non-ferrous metals were recovered and shipped to various buyers directly from the site.

This project required approximately 275,000 man-hours to complete, with the crew peaking at approximately 60 workers.

GENEVA STEEL PLANT

Precision Contracting

Geneva Steel was an “integrated” steel mill located in Vineyard, Utah. The project involved the asbestos abatement, hazardous materials remediation, and structural demolition of the idled mill.

Over one million square feet of asbestos transitesiding was removed from building roofs and walls. The transitewas removed using mechanical means, with wet methods and engineering controls. The Utah Department of Environmental Quality (DEQ) approved the means and methods, which also met NESHAP regulations. The crew used long-reach excavators, bobcats, lifts and various mechanical equipment to remove the asbestos transitesiding and roofing material.

Other environmental work included the hazardous cleaning of various pits, tanks and structures, and the transportation and disposal of much of the hazardous materials to the onsite landfill.

Precision Contracting

Post-abatement work involved the demolition of the 1,800-acre plant in 12 zones including the removal of Coke Ovens, Blast Furnaces, Hearths, Powerhouses and Switch Buildings, a Sewage Treatment Center, several Administrative Buildings, a Landfill, and other ancillary structures. The total area of buildings and structures demolished was approximately 4.5 million square feet.

Many unusual items were recycled and salvaged such as 80 miles of railroad ties and track. The crew also cleaned and removed over 400 tanks, recycled over 400 rail carts, and salvaged 13 locomotives, as well as several large machines and equipment. All wood materials were recycled for reuse.

The project was completed in 30 months with a crew of 40 to 50 laborers and operators, and the project was performed at no cost to the client.

Value: $53.0 million

MOSS LANDING POWER PLANT

Precision Contracting

This project involved the abatement, hazardous waste remediation, and demolition of several boiler structures at an active and occupied power plant facility owned and operated by Duke Energy located in Moss Landing, California.

Abatement activities included the removal and disposal of asbestos containing insulation and transitecladding from eight external power boilers ranging from 120-ft to135-ft in height, as well as from one 600 x150-ft turbine generating building that included five 100-mw generating units and all associated equipment. Trenches, piping and associated equipment was also cleaned of hazardous waste and disposed in accordance with local, state, and federal regulations.

Precision Contracting

Demolition services included the removal of the eight power boiler structures and all associated equipment including two 20,000-BBL primary fuel oil tanks, ten 8,000-gallon lube oil tanks, and six 10,000-gallon secondary fuel oil tanks, various other condensate supply and return tanks, and miscellaneous water tanks. The crews also stripped out a multi-story turbine station, leaving the floors, walls and lights for the client to use as a storage facility. Due to limited space and the close proximity of active structures to the work zone, all dismantling operations were performed using cutting and picking techniques. The vibration of all removal operations was also closely monitored as much of the work was performed in close proximity to active gas tanks.

Approximately 15,000 tons of scrap metals were prepared and shipped for recycling and restoration of the site. All services were performed on-time, on-budget, incident-free and without citation.

OAKLAND NAVAL HOSPITAL

Precision Contracting

Abatement of asbestos containing materials, universal wastes and stabilization of delaminating lead based paint from 89 buildings throughout the former Oak Knoll Naval Hospital.

Project highlights include demolition of approximately 350,000 square feet of barracks, recovery buildings and other ancillary support structures and features located on the Oak Knoll Campus. This work was performed in close proximity to sensitive streams and creeks. The 750,000 square foot, 9-story hospital building was explosively demolished.

Precision Contracting

The demolition entailed working around buildings that remained occupied by tenants, live utilities, historic buildings and existing environmentally sensitive waterways immediately adjacent to select buildings and sensitive residents immediately adjacent to the work area.

Precision Contracting

Over 100,000 tons of concrete generated by demolition activities were crushed on site and used for new construction. Approximately 85% of non-regulated waste was recycled. An overall recycling rate of over 95% was achieved.

EL TORO MARINE BASE

Precision Contracting

The scope of work entailed the demolition and abatement of over 300 buildings totaling approximately 3,000,000 square feet throughout this former Marine Corps Air Station.

Demolition was limited to the removal down to slab only to mitigate risks of soil contaminants to be performed as part of a future phase. The structures demolished included military housing, barracks, airport facility buildings, mess halls, military exchange structures, auditoriums, office buildings, supply warehouses, aircraft maintenance hangars, other ancillary structures and support features.

Asbestos abatement included the removal of stucco, flooring, pipe lagging, roofing, transite, acoustic material, fireproofing and other miscellaneous materials. The crews collected, packaged and disposed of universal wastes including mercury switches, light tubes, ballasts, and refrigerant gasses. Over 200,000 tons of concrete were crushed and recycled on-site for future development. Asphalt areas were pulverized in place and used as fill materials at non-structural areas. The project exceeded the City of Irvine’s 75% recycling requirements, effectively recycling approximately 90% of demolished materials.