Agenda - Economic Development Authority - 01/12/2017

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Due to the short section of roadway proposed, it was assumed that the electrical and irrigation components needed for control and operation will be part of a larger system within the development and was not included with this scope of work. To serve the proposed development, sanitary sewer was assumed to be required along the majority of Yolite Street and connect to an existing sanitary stub from the main on Sunwood Drive NW. One manhole with a new casting will be installed where the new sewer dead ends. A chimney seal is proposed to prevent inflow and infiltration. Eight inch service stubs were included in each direction from the manhole(capped at end)for future property owners to connect. The proposed water main work includes looping the existing water main between Veterans Drive and Sunwood Drive NW with 8"ductile iron pipe. The proposed service to the west was assumed to be an 8-inch pipe (large lot) and the site to the east a 6-inch along with a gate valve for each service stub. A hydrant was also included along Yolite Street. Proposed storm sewer installation includes two catch basins located at a low point in the new street and reinforced concrete pipe to connect these new structures to existing storm sewer on Sunwood Drive NW. It is also suggested that perforated PVC drain tile be placed behind the curb at the new structures if a sand subbase is installed. The storm sewer pipe was sized only for runoff within the street; a larger pipe may be required to convey runoff from the adjacent sites. The estimate also did not include costs for permanent stormwater management. Cost Estimates A detailed opinion of cost for the project area can be found attached to this memorandum. The opinions of cost incorporate estimated 2017 construction costs and include a 10% construction contingency factor. Indirect costs are projected at 25% of the construction cost and include engineering,legal, financing, and administrative costs. Summary of Estimated Project Costs Total Surface Improvements $186,800 Streetscape Improvements $93,600 Sanitary Improvements $37,800 Water Main Improvements $52,000 Storm Improvements $24,700 TOTAL $394,900 It was assumed that the project as estimated will be bid and constructed as a stand-alone project. If the project is constructed in conjunction with other site improvements, costs may be less due to economy of scale. Information pertaining to project funding or construction schedules were not provided by the City. ` Page 2