05-12-1997 Council Packet - Laserfiche WebLink

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BONESTROO AND ASSOCIATES © 612 6361311 05/05/97 09:58 0 :02/03 N0:775 Mr. Mike Gaffron, City of Orono Page -2- May 6,1997 red berried elder, nannyberry and pagoda dogwood will help to ensure that the newly opened forest edges do not becoine dominated by common buckthorn and tatanan honeysuckle. In a similar way, establishing a mixture of wet meadow/wet prairie grasses and forbs along wetland edges will help to minimize competition with nonnative species such as purple loosestrife and reed canary. Water Quality General Comments: • Reducing the amount of fertilizers, fungicides, and herbicides applied to the turf will reduce the probability to negatively impact water quality. Therefore, the choice of a low maintenance fairway turfgrass such as kentucky bluegrass would be an improvement over a high maintenance turfgrass such as bent grass. • The plans show a buffer around all the wetlands. This will protect the water quality of the wetlands by filtering sediments, increasing infiltration, and increasing plant uptake. However, the plans do not show what type of plants are being used in the buffer strips or how the buffer strips are going to be maintained. • Putting greens require the most chemical and water inputs, and all putting greens (and sometimes tee boxes) have a subsurface drainage system that quickly discharges excess water. This water has the potential to contain high concentrations of dissolved chemicals. The plans do not show where each green’s subsurface drainage system outlets. On holes with greens near wetlands, the drainage system typically discharges directly into the adjacent wetland which negatively impacts the wetland’s water quality and plant community. Treating green discharge will protect water quality. Water Quality Hole*By-Hole Comments: Holes #i. 4.7,11.16,17. & 18: • OK Hole #2; • Extend silt fence north to protect erosion created by tee construction. Hole #3; • Storm sewer from parking lot and entrance road is short-circuited. • Where is the green subsurface drainage outletting? Hole #5; • Extend silt fence to southeast comer of wetland 4 to protect from cart path construction. • Extend silt fence around southern border of NURP pond 2. • Where is green subsurface drainage outletting? Hole #6: • Extend sill fence along southwestern side of NURP pond #1 to protect ditch from erosion. Hole #8; • Add silt fence between cart path and wetland. Hole #9: • Add silt fence between tee and ditch along Tamarack Drive behind tee boxes. • Where is green subsurface drainage outletting?