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12 203267v1 EXHIBIT E TO STORMWATER AND RECREATIONAL FACILITIES OPERATION, MAINTENANCE AND EASEMENT AGREEMENT Engineering standards Stormwater facilities within the City of Arden Hills shall be designed in accordance with the Minnesota Stormwater Manual prepared under the guidance of the Minnesota Pollution Control Agency. The City Engineer shall assist applicants with applying the standards and recommendations from the Minnesota Stormwater Manual during site specific design. Recreation equipment and trail installation plans shall be reviewed and approved by Arden Hills City staff prior to installation. Equipment shall be installed in accordance with manufacturer’s recommendations. Trail shall be installed in accordance with the City’s standard specifications. Annual Inspections The Owner, at its expense, shall be responsible for the inspection and maintenance of stormwater drainage and management facilities (Drainage Facilities) located on the Property or directly associated with the property improvements to ensure Facilities function properly. Owner shall inspect the Drainage Facilities at least annually and submit a written inspection report to the Arden Hills City Engineer for review. Owner shall promptly complete maintenance and repairs to the Drainage Facilities based on finding from the annual inspection or as directed by the City Engineer. Inspections shall be completed by a qualified person with formal training and education in the design and maintenance of stormwater management practices. A summary of inspector qualifications shall be provided with the annual report. Annual inspections shall include, but are not limited to, the following items. 1. Access: Adequate access is provided for inspection, maintenance, and landscaping upkeep, including the ability to access areas by appropriate equipment and vehicles. 2. Sediment Removal: Accumulated sediment is removed every seven years or after 40 percent of total forebay or permanent pool capacity has been lost. 3. Vegetation: Mowing of the pond buffer, shoreline or base elevation, and the embankment is completed a minimum of once per year. All areas of bare soil and erosive gullies are repaired and stabilized. All noxious weeds are treated and/or removed from the Facility area. 4. Debris: All trash, litter and debris is removed from within the 100-year high water level of the facility, including fallen trees, limbs and other floatable materials. 5. Infiltration: The surface of infiltration areas are free of accumulated sediment and continue to provide the design infiltration and permeability rates in accordance with the original hydraulic design. Standing water does not exist after 24 hours following a rain event. Subsurface drainage pipes are free of debris and are not clogged with material. 6. Conveyance and Outlet Works: Inlet pipes, outlet pipes, outlet control devices and emergency overflow paths are free of debris or other potential blockages. Pipes and structures are secured and show no signs of significant deterioration or damage. Trash guards are secured and free of blockage. Rip rap and energy dissipation items are maintained in proper working order in accordance with design requirement.