5.6. PCSR 08-23-2005 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I WWW.RYANCOMPANIES.COM RYAN COMPANIES US, INC. 50 South Tenth Street, Suite 300 Minneapolis, MN 55403- 2012 BUILDING LASTING R!I.ATIONSHIPS IYAN 612-492-4000 tel 612-492-3000 fax In addition to the main power feeds, Elk River Municipal Utilities will also run a feed for temporary power to be used for construction activities. This power source will be maintained indefinitely to power the life safety circuits within the building and for the street light on 182nd Street. Elk River Municipal Utilities is in process of determining whether they can meet the temporary service demand for commissioning with their existing infrastructure. They have determined that in order to meet the ultimate demands, they will have to add a new electrical substation. This is a substation that they have been recendy considering, and the revenue from the Target facility (along with existing demand) is expected to generate adequate revenue to support such a facility. Water Main The Technology Center has a total demand (excluding irrigation) of 116,100 gallons per day. The peak flow demand is 223 GPM, or average flow of 80 GPM (115,000 gallons per day) to the cooling towers. The domestic use for occupants will require a peak flow of 103 GPM and an average flow of 900 gallons per day. Target's fire flow requirements are 1420 GPM peak flow with activation of a dry sprinkler system and a hose to extinguish a fire. There is an existing 10" Water Main that runs east west just north of the proposed north property line of the Target site that was recendy constructed. Hydrant flow tests recendy taken indicate that the flow demands can be met by the municipal system, but a private fire pump on the interior of the building will be required to meet the required pressures. The utility plan proposes an 8" public water main loop around the perimeter of the building with public fire hydrants within a 20' wide public drainage and utility easement. The building services will be private and will not be within easements. Sanitary Sewer The sanitary sewer requirements for the facility are 148 GPM peak flow, or 44,100 gal/day average. The 12" PVC Sanitary Trunk Main that runs east west just north of the proposed north property line of the Target site provides more than adequate capacity for this loading. The City Engineering Department has said that the treatment plant can easily handle this flow, and the flow will actually help justify a recendy constructed lift station near the Business Park that is currently running under capacity. Storm Sewer The Target Technology Center development proposes to construct a network of manholes and concrete reinforced storm sewer pipes to collect on-site stormwater runoff. The storm sewer and the on-site pond are also proposed to be sized to handle runoff from the proposed public