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4' #?%) 0.i 7O O CITY of ORONO 0, ,- I aC' rte/- S 1, ,�n ti Municipal Offices 'el f T,4v,--,`'"f4)) N��6 Street Address: Mailing Address: xESTrIO¢ 2750 Kelley Parkway P.O. Box 66 Orono, MN 55356 Crystal Bay, MN 55323-0066 May 16, 2001 Pat Doherty 2790 White Oak Circle - G �� Long Lake, MN 55356 Re: Drainage Concerns Dear Mr. Doherty: As you are aware, the recent heavy rains have been challenging to Orono property owners. The ponding problem in your back yard is no exception, and we share your concerns regarding inundation of your septic system. We understand the immediate solution to the ponding problem was to pump the water from your property to a drainageway. However,the high noise levels created by the large pump created a major disturbance for those living near the pump. The noise levels significantly exceeded the levels established by City ordinance, particularly during the evening hours. City staff are attempting to maintain a balance between the need for emergency measures to protect properties, with the need to maintain peace and quiet throughout our residential neighborhoods. In the absence of a long term solution to the ponding problem,you will need to use a pumping system with a noise level that is within City code requirements. A copy of the City's noise ordinance is enclosed. We will assist in whatever way we can to help you meet the provisions of the noise ordinance, and we do appreciate your cooperation. The City would also like you to consider a long-term solution to this drainage problem so that pumping will not be necessary in the.future. Attached is a topographic map of your area,which clearly depicts the problem-there is no apparent outlet to the low point in your back yard. In the extreme circumstance the water level will rise to elevation 963.8'before it flows southeastward through the Kling property,or if that route is blocked for some reason,it will rise to 964.9'before it outlets eastward via the shallow ditch along the south side of the Luce Line Trail. Based on the map, your basement floor elevation appears to be at an approximate elevation of 965' and your septic system drainfield is at approximately 963' at the surface, or probably 960-61' at the bottom of the trenches. Telephone(952)249-4600 • Fax(952)249-4616 www.ci.orono.mn.us