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Demo and Debris Removal <br /> The water treatment plant (WTP), office trailer, parking apron, concrete containment basins, and <br /> miscellaneous site debris in the valley were demolished and disposed of in the Minnesota audit <br /> during the summer of 2018 (Figure 2). Prior to demolition the WTP was relocated to the mesa, <br /> and the sumps were rerouted so that onsite operations would not be disrupted during demolition <br /> work. Demolition was completed so that the underlying contaminated soils could be removed <br /> Figure 2.March 2018,Alluvial Valley Before Demolition Work Figure 3. November2018,Alluvial Valley During Demolition Work <br /> and disposed of onsite (Figure 3). <br /> The work required for the"Demo and Debris Removal" scope has been completed. <br /> Consequently, CLL is requesting that the $246,400 included in the current bond be released. <br /> Excavate, Haul, and Place <br /> In preparation for excavation <br /> #, work, CLL widened and improved <br /> the haul road to the Minnesota <br /> a <br /> Adit in Spring 2018. This <br /> allowed contractors to safely haul <br /> radionuclide-impacted soils up the <br /> ss one-lane road, and stage the <br /> Al material outside of the Minnesota <br /> audit for disposal in the Glory <br /> Hole. From the haul road, <br /> materials are trammed <br /> n underground o skid-steers for <br /> Figure 4.September 2020,Alluvial Valley Excavation Progress final disposal. <br /> Excavation work began in the summer of 2018, in accordance with Technical Revision 14 (TR- <br /> 14) (Figure 4). Once the Minnesota Adit is filled, soil will be disposed of in the former Black <br /> Forest mine underground. To date, 56,000 cubic yards of material have been placed in the <br /> Minnesota Adit. The Black Forest will be able to hold up to an additional 15,000 cubic yards <br /> which will accommodate removal of the remaining alluvial material. This disposal work is <br />