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Agreement on Alternate Surface Water Ponding Design August 14, 1997 This agreement between Fairview H.A. and the City of Roseville is set forth to define the purpose and responsibilities of the two parties regarding an on-site surface water ponding area within property owned by John Allen at 2555 Fairview Avenue, Roseville, Minnesota. The concerns include placement on the site, size, capacity, design, construction techniques, fencing, future renovation/redesign, and indemnity. L Background 1.1 It is understood that Rice Creek Watershed has issued necessary permits to John Allen for the development located at 2555 Fairview Avenue to store water derived from surface run off on the site in conformance with the Rice Creek Watershed requirements. 1.2 The City of Roseville also has certain additional policies used to guide the safe and efficient use of storm water ponding area. A portion of those policies require ponds to be constructed to a 3H: I V slope within the first _ feet of the pond. The purpose of this slope is to provide a gentle slope to preclude intruders from being immediately immersed in deep water. 1.3 The City of Roseville has adopted a policy as part of the Tower Place Master Plan which states that if possible, small on-site ponding areas are less efficient and less desirable than subregional and regional ponding areas that handle storm run-off from multiple sites. The Allen property is located within the Tower Place Master Plan area. 1.4 In 1997, the City of Roseville placed a temporary moratorium on new surface water contributions to the regional pond serving the Allen site (James Addition Pond). Because of this temporary moratorium, the Allen development was required to construct an alternative ponding site on the Allen property to store all surface water run off created by the impervious surfaces on the Allen property. I