Historical data referencing swale

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� � To: Mayor Callahan and Orono Councilmembers Ron Moorse, City Administrator I+�om: Jeanne A. Mabusth, Building & Zoning Administrator Date: October 21, 1994 - Subject: #1970 Scott Michael Wold, 3026 Casco Point Road - Conditional Use Permit - Resolution Zoning District: LR-1C requiring 1/2 acre in area. The property consists of 26,771± s.f.. Additional Exhibits O - Andrew and Kristen Ronningen Letter of 10/13/94 P - Amended Grading Plan Brief Review of Application � For more background on this review, please refer to the attached staff inemo of October 12, 1994. The applicant was advised to file a conditional use permit for filling activities that can not be authorized under a building permit issued for new residential construction. Refer to Elchibit I, note elevation changes are proposed within the neighboring property to the west. Applicant plans to construct a new residence on Lot 2 of the Kelly Second Addition on Casco Point. Soil borings for new construction call for the removal of approximately 450 cubic yards of poor soils and replacement with suitable granular material fill. The spoils will be stored to the southeast of the proposed residence until an appropriate stage in construction with the restoration of yard. Review Elchibit H. Gustafson did not accept the original grading and drainage plan that proposed an underground tile at west lot line conveying drainage to drainageway at east lot line. Engineer was concerned that walkout design garage on property to the west would not be protected from flooding during the 100-year storm event. Review Exhibit P. Applicant has submitted a revised grading plan showing a drainage swale to east. Gustafson has approved the amended plan and once again noted caution with the organic clays found at soil boring #2 noting potential settlement problems for a foundation. Applicant plans to consult another engineer. Please review Exhibit O, the neighbors to the east voiced concem with the original grading plan. The amended plan addresses all concems related to drainage. The moving of the house closer to street will not resolve the need to excavate poor soils for building pad. The City would not want to grant street setback variances for a lot created in a recent subdivision when there is no real hardship. The applicant advised at a Planning Commission meeting that his engineer had recommended the creation of a swale to assure natural drainageway is maintained to east. The applicant has agreed to grant a drainage easement over the drainageway. Engineer's amended plan has included a legal description for the drainage easement. Gustafson has approved the legal description for the drainage easement.