Agenda - Council - 06/25/2013 - Laserfiche WebLink

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Enterprise Park to Crooked Lake 115 kV Transmission Line March 2012 Environmental Assessment with the School District, city of Anoka, and Anoka County Highway Department's development plans for this area. The requested route widths are intended to allow flexibility to work with landowners on the alignment and to accommodate environmental concerns. The rights -of -way will typically be 25 to 35 feet from the centerline of the transmission line. In special circumstances, wider rights -of -way may be needed. The route width of Route Segment Alternative A is 400 feet. The right-of-way will be typical of the Applicant's proposed route, varying from 25 to 35 feet from the transmission line centerline. 3.6. Project Costs The total estimated cost of the Project, as proposed by the Applicant, is approximately $11.71 million (2010 dollars.) The total estimated cost of the project, incorporating Route Segment Alternative A, is approximately $12.16 million. Cost estimates for the proposed transmission line and substations include expenditures for permitting, surveying (land and cultural resources),right-of-way acquisition, right-of-way clearing and right-of- way restoration, materials, relocation or underbuild for distribution facilities, and construction for both the transmission line and substation modifications. Transmission line costs vary depending on easement costs, permitting costs, the structure type, the number of structures per mile (i.e., span length), the height and diameter of the wood poles or steel poles, labor and hardware costs, and any modifications to existing distribution infrastructure. The line construction costs include the cost of structures, foundations, insulators, conductor, bird flight diverters where necessary, and labor as well as any costs of equipment that will be used to construct the new line and modify the existing substations. The single -pole 115-kV transmission line costs for a 795 ACSS conductor (the conductor proposed for this Project) in a developed area are approximately $1,503,000 per mile. Annual operating and maintenance costs associated with 115-kV transmission lines in Minnesota currently average about $600 per mile. Storm restoration, annual inspections and ordinary replacement costs are included in these annual operating and maintenance costs. The estimated annual cost of right-of-way maintenance is between $500 and $750 per mile of transmission line. Operation and maintenance costs associated with the Crooked Lake and Enterprise Park substations will be minimal Operation and maintenance costs include weed control inside the substations. 12