This US Army Corps of Engineers, Seattle District (USACE) military construction contract required the removal of 12 buildings, including: six one-story buildings, five two-story barracks buildings, and one gymnasium for a total of 48,951 sf. Five 1000 to 1500-gallon diesel fuel oil underground storage tanks and four 300-galon diesel fuel oil above ground storage tanks were removed, as well. Incentives for reaching construction demolition material diversion levels above 51% were offered as part of the project. MCS designed a building removal strategy to recover the highest yield of reusable materials. Several innovative manual and mechanical techniques were used to improve recovery and efficiency. As a result, the project was completed on time, within budget, and with no change orders. The total cost of the project was equivalent to the costs associated with traditional demolition (crush and haul) in the Northwest. At completion, MCS diverted 100% of the 3583 tons of potential demolition debris and realized a transportation and disposal cost avoidance of an estimated $300,000.
MCS recovered 215 tons of materials for resale in local markets. By using local recycling and salvage contractors, much of the energy it took to grow, harvest, process and transport the original materials was preserved, and less energy was spent on transporting the materials to new markets. Lumber, flooring, trusses, porcelain bathroom fixtures, aluminum, steel, brick and siding were segregated on-site before transport to reuse markets. The total estimated value of these products was $207,000. The use of local subcontractors also created jobs, resulting in $80,000 in economic impact.
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