Agenda - Council - 06/14/2005 - Laserfiche WebLink

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Will the project involve the physical or hydrologic alteration, such as dredging, filling, stream diversion, outfall structure, diking, and impoundment, of any surface waters such as a lake, pond, wetland, stream or drainage ditch? If yes, identify water resource affected and give the DNR Protected Waters Inventory number(s) if the water resources affected are on the PWl. Describe alternatives considered and proposed mitigation measures to minimize impacts. E~ bio · Yes DNR Protected Waters Inventory Number(s). __NA__ This project proposes to fill 0.36 acres of wetland. This would occur for access and public safety concerns, An easement will be placed over all created and presei'ved wetlands to protect them from future disturbance. Wetland fill areas will be as small as practical for construction and will occur at narrow points and farm road locations. See the DNR Protected Waters Inventory on Figure 3. Alternate plans that do not require wetland fill were investigated. These plans were generally a system ofde~'d-end roadways. Street connections across wetlands were required to allow safe traffic flow patterns. The street linkages between the uplands have been located to take advantage of narrow areas in the wetlands. The reduced length of the crossing reduces the area of wetland affected. The project will involve an increase in volume, sediment and nutrients in storm water runoff. In order to minimize impact to the adjacent wetlands, downstream ponding areas will be constructed on non-wetland areas of the site to control both the rate and quality of surface runoff. The storm water will be released at the pre-developed rate. The stomn water will be treated in the basins to improve the water quality flowing to the existing ditches and wetlands,, which will minimize impacts to the natural water resources. Best Management Practices will be employed to prevent impacts to existing wetlands. In areas of wetland impact, such as crossings of wetlands for street construction, proposed grades will be as low as possible to minimize filling. Culverts will be installed and sized to maintain existing water levels in the wetlands. Will the project involve installation or abandonment of any water wells, connection to or changes in any public water supply or appropriation of any ground or sudace water (including dewatering)? If yes, as applicable, give location and purpose of any new wells; public supply affected, changes to be made, and water quantities to be used; the source, duration, quantity and purpose of any appropriations; and unique well numbers and DNR appropriation permit numbers, if known. Identi¢ any existing and new wells on the site map. If there are no wells known on site, explain methodology used to determine. ~ No ~ Yes Cm-rently, tlmre is a well on the existing G~ Club site. ~e well pe~it numb~ is not ~own. (From looking at th~ County Well Index it could possibly be t69486.) ~is well will b~ s~led in accordanc~ with Minnesota Departmgnt of Health regulations when the Club is demolished per Minnesota D~pa~nt of Health guidelines. Any mmxpected wells encountered on site ~ill. be seale.d in:accordance with Minnesota D~pa~nt of Health requirements. Watermain will b~ installed with the internal str~ts tbr fire protection and domestic service. B~ed on 162 ~its, with a population of 2.75 people/home, th~ projected se~ic~ area population will b~ 446 p~opl~. Water ~ ~om this development is projected to be 66,900 gallons/day average use (at 150 gallons per day p~r person). Pe~ water