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short section of existing storm sewer may also have to be encased to satisfy this requirement, 2) Permanent utility easements must be dedicated, 3) It may be wise to place restrictions on the building of decks and other structures which could be built within the utility easements. 4) Many areas within the development are proposed to have slopes that will be steeper than 4:1, which is the steepest slope that can be easily maintained. Some are as steep as 2.5:1, We recommend that the grades be revised to meet City code or minimum maintenance standards (4:1). Grades, as proposed, foretell ongoing erosion problems. STREETS The cul-de-sac that was proposed on the south side of Minnesota Street has been replaced by a short loop street. Our comments area 1) * The new configuration of the loop street presents the issue of maintaining whatever is placed within the very large island. It is in the City's best interest to ensure that this is privately -Mair tail aeai. 2) * The loop street does not meet turning radius standards for 30 mph. However, this street will function as a driveway and therefore public street standards are not necessarily applicable, 3) * The widening of Minnesota Street for an entrance to the development may present snow plowing problems. It is in the City's best. nterest rto�;ensure that this portion of the street is privately ma.tt,di 4) The proposed 50 foot radius cul-de-sac to the north of Minnesota Street is smaller than the City's standard 60 foot radius for multi -unit housing, From an engineering standpoint, we recommend that the City require a 60 foot radii to provide adequate room for turning movements of school buses, snow removal vehicles and fire trucks. A 50 foot radius is workable, but difficult. 9 As I understand, Masterfiece Homes is proposing a substandard cul-de-sac radius primarily in an effort to save a raw of large trees to the east of the development? Because of the steep (3:1) existing slopes along the east edge of the development, it appears that a full 60 foot radius sac would require that a much larger area be cleared, taking numerous mmature trees. The City's position regarding the protection of existing mature tree stands will be the deciding factor in this issue. 5) The possibility of extending Minnesota Street to Viking Drive in the future, eliminating the awkward intersection of nice Street and Viking Drive, will be negated with approval of this development concept. We recommend that this issue be considered before approval. ce: Dave Harris Kathy Glanzer £0°d 'OSSd '3 00alS9N09 TT£T 929 zT9 ZT:TT b66T-9Z-ET