08-18-1979 Planning Packet - Laserfiche WebLink

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Mr. Michael P. Gaffron City of Orono Page -2- June II, 1997 to Lot 4 from Lyman Avenue wMl likely exceed acceptable grades even Aith a “tuck under" garage. A grading, drainage and erosion control plan should be prepared that shows both the existing and proposed contours, building pad elevations, driveway locations, and erosion control measures to be used during construction. Plans should be prepared for ihe street construction. 3. Drainage: Approximately one third of the property drains directly to the manmade pond at the center of the subdivision. It is likely that this pond would be classified as a wetland and protected under the current State and Federal laws. The property may have as many as five separate wetland areas, none of which are regulated by the DNR. A wetland investigation and delineation should be conducted on the property to determine the wetland limits. It appears that the development of Lot 2 will impact a portion of one of the wetland areas. Existing drainage ways along the west and north lines of Lot 2 should be defined and improved. A culvert will be required under the driveway to Lot 2. The plans shor'- ' be submitted to the Minnehaha Creel Watershed District for their review. The development will likely need to provide some type of storm water pond to meet the MCWD rules. If the manmade pond is determined to be exempt from the wetland regulations, it would be ideal for this purpose. An outlet structure should be constructed to control the pond levels and outflow s. 4. Easements: The platting should include a dedicated right-of-way for Lyman Drive and the cul-de-dac. The cul-de-sac will require a lot split/combination, or easement from the adjacent property. Drainage and utility easements should be provided 5 feet wide along all interior lot lines and 10 feet wide along the roadway right-of-ways. Drainage easements should be provided across all wetland, drainage way and pond areas. 5. Financial Guarantee: VVT.en the plans have been completed we will prepare an estimate of the total cost for the site improvements to determine the amount of the financial guarantee required. Please contact me at this office if you have any questions regarding this matter. Yours very truly, BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC. Shawn D. Gustafson, P.E. Cc: Greg Gappa, City of Orono