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3 | P a g e City Hall Parking Lot Final Design PROJECT UNDERSTANDING The existing parking lot pavement at Arden Hills City Hall is in poor condition and needs to be replaced for structural capacity and safety. The existing handicap parking stalls and sidewalks need to be replaced to meet PROWAG standards, and the lighting needs to be replaced. The City of Arden Hills has requested that HR Green provide consulting engineer services regarding planned improvements to the parking lot. The goal of our proposed work is to provide design services to the City of Arden Hills for construction of features that will improve the parking lot pavement and design loading structural capacity, improve the pedestrian facilities to be ADA compliant, and will improve the striping, lighting, and drainage of the parking lot. DELIVERABLES HR Green will provide the following deliverables: 1. Topographic survey of Arden Hills City Hall parking lot a. Termini of area to be surveyed includes entrance driveway from 15’ north of Hwy 96, includes one panel of the concrete driveway entrance, to 5’ outside of the back of curb on the north side of the parking lot; and includes the sidewalk at the building entrance to the rip rap at the curb cuts on the east end of the parking lot. b. Gopher State One Call c. Topo survey within the area of including: i. Existing sidewalk, crosswalk, and pedestrian ramps including storm and sanitary sewer structures, all visible utilities, underground utilities that have been marked per the Gopher State One Call, signs, sidewalks, curbs (straight-ways, corners and curves), pedestrian ramps, large vegetation (trunks greater than 4 inches), landscaping edges, and retaining walls (shots taken at low ground in front of and at high ground in back of retaining wall), fences. ii. The spacing of survey shots on the gutter line, top back of curb, center line of road and ground shots for surface elevations shall not exceed 25 feet. iii. For large parking lot spans, shots will be taken in a grid every 50 ft. and also at any obvious grade breaks as determined by the surveyor. d. Construction staking i. All staking will be one-time staking, wrecked or ruined stakes are re- staked at cost of the contractor. ii. Staking includes curb and gutter, parking lot, entrance roadway, and pedestrian ramps at the City Hall parking lot. iii. Parking lot staking every 50’ and at grade breaks as necessary iv. Surveyor mobilization is assumed to mobilize a maximum of three times to the project site for staking e. Coordinate Reference System i. Mapping data will utilize the Ramsey County Coordinate System, NAD83 (2011 adjustment). Published MNDOT Geodetic Stations and Public Land Survey corners as noted and published by the Ramsey County Survey