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Ponds 1, 2 and 3 and constructing a soil-bentonite cutoff wall around Treiber A, which were <br /> completed in 2012 and 2013, respectively. Additional phases of reclamation are on-going. <br /> 1.2 Site Description <br /> The site description below contains information relevant to this portion of the system design. <br /> Ponds/Pits outside of the current design are not described. Additional information about the <br /> ponds in this project can be found in Section 4. <br /> Overland Ponds Pond 1 is located at the upstream end of the system. Currently, water is <br /> conveyed into Overland Ponds Pond 1 from the New Mercer Ditch at a maximum flow rate <br /> of approximately 10 cubic feet per second (cfs). Future inflows from the Pleasant Valley <br /> Pipeline or other sources will likely also contribute to the Overland Ponds Pond 1 inflows. <br /> There is one existing culvert in Overland Ponds Pond 1, a 24-inch inner diameter steel <br /> reinforced polyethylene (SRPE) low level interconnect pipe located through the berm <br /> between Overland Ponds Ponds 1 and 2. Topographic information for Overland Ponds <br /> Pond 1 was obtained by Civil Arts in 2011. <br /> Overland Ponds Pond 2 is located downstream of Overland Ponds Pond 1 and upstream of <br /> Overland Ponds Pond 3 and Treiber A. An existing 26-inch inside diameter(ID) high- <br /> density polyethylene (HDPE) pipe is located through the berm between Ponds 2 and 3. The <br /> interior slope of Overland Ponds Pond 2 pit was reclaimed in 2012 by placing and <br /> compacting a clay slope liner at a 3H:1V (horizontal:vertical) grade extending into bedrock. <br /> The slope liner is keyed to a maximum of 5 feet into bedrock, as shown on design drawing <br /> C-1 in Appendix C. Topographic information for Overland Ponds Pond 2 was obtained by <br /> King Surveyors, Inc., in November, 2013 <br /> Overland Ponds Pond 3 is located downstream of Overland Ponds Pond 2 and upstream of <br /> the future Overland Ponds Pond 4. Overland Ponds Pond 3 is currently undergoing <br /> reclamation and is lined with a combination slope liner/slurry wall system. There currently is <br /> not an outlet for water from Overland Ponds Pond 3. Topographic data were not provided to <br /> GEI for Overland Ponds Pond 3. <br /> Treiber A is located downstream of Overland Ponds Pond 1 and Overland Ponds Pond 2 and <br /> upstream of Treiber B. An existing high level culvert of unknown size/capacity connects <br /> Overland Ponds Pond 1 and Treiber A. There currently is not an outlet for water from <br /> Treiber A. Topographic information for Treiber A was obtained by King Surveyors, Inc. in <br /> June 2014 <br /> Treiber A is lined with a soil-bentonite cutoff wall extending approximately 4 feet into <br /> bedrock. The interior slopes within Treiber A are currently being constructed by placing and <br /> compacting fill to a 3H:1 V slope, with liner construction completion anticipated in early <br /> November 2014 prior to construction of the interconnects. <br /> GEI Consultants, Inc. Introduction 12 <br />