01-16-1996 Planning Packet - Laserfiche WebLink

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M. A .^4 t / •• *# -^5- -w PROJECT REQUEST ■0 PRESENT SITUATION: During an August rainstorm, the taller portion of a 120' timber retaining wall collapsed. The wooden wall, constructed in 1982, sharply increases in height from one foot on the east end to eight feet on the west end. Further south from the wall, upland ends in type 1 & 3 wetland (see attached wetland data). Type 3 wetland is a plant mixture of 40% purple loosestrife, 40% lake sedge and 20% cattail. Wetland on this property is part of a 30 acre wetland comple.x. DESCRIPTION OF PROJECT; Through consultation with individuals in the landscape and land restoration business, the following project was designed not only to solve the retaining wall problem but also to enhance the natural value of the property. The plan entails excavating a small pond within the current wetland and using the fill to create a more natural slope from the house. The slope would be seeded with a mixture of native grasses, wildflowers and shrubs with no increase in turf grass area. The creation of a natural slope from the house would eliminate the present hazard of the sudden 8' drop-off that now exists in the backyard. Exposing the water table adds more wildlife diversit>‘ to the area and helps to restore cattails and other native wetland plants at the expense of the non- indigenous, noxious purple loosestrife. CONSTRUCTION SCHEDULE AND DETAILS: Excavation and rough grading to be done in late February over frozen ground to facilitate moving heavy equipment. Final grading to be completed in April or May. Plant seeding to be done late May or early June. Seed mixture will contain little bluestem, Canada wild rye, side oats grama and Indian grass. Wildflower mix to include red milkweed, common ox-eye, black-eyed susan and purple coneflower. Silt fencing will be in place for erosion control after excavation. \