The process of siting and building transmission lines is sensitive to potential impacts on the environment, wildlife and agriculture. Potential impacts are fully evaluated and documented as part of the comprehensive regulatory review process.

In fact, state and federal laws regulate all aspects of siting and building transmission lines. Transmission lines can only be built if they adequately protect the environment.

Consider the Facts:

• A variety of environmental issues are considered during the location and construction process - sensitive natural resources such as woodlands, wetlands and threatened or endangered species; cultural resources; existing and planned land use; and electric and magnetic fields.
• Farm disease prevention practices will be developed and implemented to prevent the transmittal of livestock, plant and other diseases between farms during the construction of the line.
• ATC is funding a National Park Service environmental impact study of the Arrowhead- Weston transmission project crossing the Namekagon River. ATC and the NPS will use the results of the study to determine the best way in which to cross the river with the least amount of environmental impact.
• The siting of transmission lines utilizes as many existing right-of-way corridors as possible.
• Once a primary transmission line route is identified, a proposed construction plan - including engineering studies and environmental impact data - is submitted to the appropriate state and federal regulatory agencies for approval.
• When a transmission line is finalized, but before construction can begin, a Construction and Mitigation Plan will be developed and approved by the Public Service Commission of Wisconsin. The plan must provide specific information about environmentally sensitive resources on the proposed routes and steps to be taken to avoid or minimize adverse impacts on those resources.
• Transmission line structures are typically located near areas such as property lines, fence lines or crop lines, to minimize impact on land use. Landowners’ preferences for location are accommodated when possible.
• Structures are located to allow unrestricted and undisturbed passage and movement of wildlife.
• Independent environmental inspectors reporting to the PSCW will be hired to identify environmentally sensitive sites that need protection during construction, monitor construction and ensure compliance with regulatory requirements.
• Alternate construction methods are used when working in environmentally sensitive areas. The work in those areas is often performed during the winter months to prevent or minimize ground disturbances that may affect plants.
• Relevant state and federal regulatory requirements related to planning, siting, construction and public health and environmental concerns must be met before power lines can be built.