Summitville Mine Reclamation Superfund Site Colorado Department of Public Health San Luis, CO The Summitville Mine located in the San Juan Mountains of southwest Colorado is 11,500 feet above sea level and approximately 20 miles southwest of Del Norte, Colorado. Gold and silver mining activities began in 1870 and large-scale open pit mining began in the mid 1980's. [...]

Backfill Services Master Task Agreement Hanford Site Richland, WA DelHur was awarded a master task order agreement to reclaim previously remediated waste sites at the U.S. Department of Energy’s Hanford Site.  The scope included transporting and backfilling approximately 883,013 CY of material from stockpile and borrow sites and recontouring the backfilled sites to a [...]

Monticello Millsite Stream Stabilization/Wetland Complex City of Monticello Monticello, Utah From 1940 through the early 1960s, U.S. Department of Energy (DOE) predecessor agencies actively mined palladium and uranium and processed it in the Montezuma Creek Valley in southeastern Utah near the city of Monticello for use throughout the DOE weapons complex. Since the site's closure, [...]

Group 4 100-K and 100-F Remediation Department of Energy / Bechtel Hanford, Inc. Hanford Nuclear Site, Richland, Washington The Group 4 100-K and 100-F remediation sites are located adjacent to the 100-K East and West nuclear reactors and the 100-F reactor at the Hanford site. The 100-K reactors were operational from 1955 to 1971 and [...]

116-N-1 Crib and Trench Backfill Department of Energy / Washington Closure Hanford LLC Hanford Nuclear Site, Richland, Washington The 116-N-1 treatment, storage, and disposal unit was the primary liquid waste disposal facility for the N Reactor at the Hanford Site and operated from 1963 to 1985. The "crib" was part of the 116-N-1 unit [...]