04-17-2000 Planning Packet - Laserfiche WebLink

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TV PROJECT NARRATIVE mJscjam . -r. .) r\ «.t1,<C4> HENNEPIN COUNTY MAINTENANCE FACILITY PROPOSED SALT STORAGE BUILDING COUNTY PROJECT 9990072 The Hennepin County Transportation Department is proposing to construct a Hi-Arch Gambrel type salt storage building at the Hennepin County maintenance facility located at 3880 Shoreline Drive in the City of Orono. The current zoning for the property is LR-IC (One Family Lakeshore Residential District) which would need to be amended to allow highway/road usage in a residential zone. A conditional use permit would be required for the property to be used for highway/road usage. The property would be used to store veirious materials used tor highway maintenance. Five variances would need to be acquired for hardcover, accessory building size, building height, grading widiin a wetland, and grading in excess of 500 C. Y. The Building (See Typical Structure) The proposed building would be located in the northeast comer of the property with its long dimension running west to east and having one entrance on the south side. The building dimensions would be 70' W X 112' L X 42’ H with 12 ’ high retaining crib walls and one gable end roof t>-pe entra -c with dimensions of 24' W X 30’ H. The roof material would be asphalt shingles with a contir lous skylight made of corrugated translucent fiberglass panels. The framing would consist of pressure treated columns and braces with 3/8" embossed painted siding panels. Typical footings would be poured concrete 2' W X 12 ’ L X 2’ H in dimension with footing bottom located 4' below grade with a 3,000 PSI soil bearing capacity and perpendicular to the building at each crib wall support. The floor would consist of 6" thick bituminous material sloped to the entrance for drainage. The finished floor elevation would match the existing buildings floor elevation of 944.3' (NAD 1983). The interior working height would be 30'. The electrical consists of an outside service panel and Outlet located on the south end of the west wall and the source of power would be an electrical panel in the existing building located 120’ west of the storage building. Interior and exterior lighting would be provided with a motion detector photocell light fixture above the entrance and a flood light on the southwest and 'itheast building corners. The exterior lighting would be positioned and aimed as to not become a point source for the surrounding neighborhood. Building Usage The propose'^ building has approximately 7.840 square feet with a storage capacity of 2.000 tons. 1,000 ton anf* storage amount and l.OOO ton salt/sand mix amounting to approximate!) one third of the ar.nurl nixed usage. The building size would provide for interior mixing and loading ot materials eliminating the current exterior storage requirements and operations thus reducing noise to the surrounding neighborhoods and eliminating the salt/sand transported by stormwater runoff to the adjacent wetlands. The building capacity would eliminate approximately 60 round trip truck runs a year by allowing direct delivery and storage during the da^ime hours. The stored materials would provide the southwestern cities of Hennepin County with improved snow and ice control by having the materials readily available in demand quantities in the proximity ot usage.