About the Data

What are route segments?
  • A route segment is a discrete section of a potential transmission line.
  • Route segments follow existing road right-of-way and for analysis were placed in the center of the roadway.
  • The identified route segments maintain general progress between Murden Cove and Winslow Substation.
What are route options?
  • A route option is a pathway between two identified terminal points that link route segments together.
What are criteria?
  • A set of factors by which route options will be assessed

The Analysis

Analysis Data
Analysis Corridor
Analysis Metrics

The Criteria

Criteria are broken into three broad categories:

Criteria related to existing land use and regulatory aspects of development. Metrics include the presence/absence or quantity of the criteria within a 120-foot analysis area along the route options. Criteria metrics are not a representation of project related impacts.
Parks and Recreation BI Metro Parks and Recreation properties (and other agency parks, if present).
Trails BI Metro Parks and Recreation trails (and other agency trails, if present).
Community Gathering Spaces Identification of community spaces such as schools (public and private), religious facilities, libraries, museums, granges, etc.
Shoreline This information is an indicator of permitting complexity. Above ground transmission lines are prohibited in the shoreline environment.
Zoning Identification of City of Bainbridge Island Zoning Designations. Zoning designations indicate permitted uses.
Land Use Identification of present land uses and activities.
Scenic Byways Washington State Route SR305 is part of the Scenic and Recreational Highway System.
Parcels Identifies the number of properties along a segment.
Conservation Properties Identification of properties include conservation easements. This information is not all publicly available and may not be accessible until route option alternatives are established. Specific conservation easement language may not permit establishment of a new transmission line.
Historical Identification of properties containing above-ground historic (architectural) resources that are documented on a local or state register. This information could indicate permitting complexity and need for local agency or DAHP coordination.
Cultural Confidential, not publicly available: Identification of known cultural resources. This information could indicate permitting complexity and need for Tribal/DAHP coordination.
Criteria related to existing environmental resources, condition or character. These criteria typically have a regulatory component. Metrics include the presence/absence or quantity of the criteria within a 120-foot analysis area along the route options. Criteria metrics are not a representation of project related impacts.
Category I Wetlands Identification of mapped Category I wetlands. Category I wetlands are high functioning wetlands with high habitat scores and are generally rare. New Primary Utilities are prohibited in Category I wetlands.
Category II Wetlands Identification of mapped Category II wetlands. Category II wetlands are high functions wetlands with high habitat scores. New Primary Utilities are prohibited in Category II wetlands.
Category III Wetlands Identification of mapped Category III wetlands. Impacts to Category III wetlands require compensatory mitigation.
Category IV Wetlands Identification of mapped Category IV wetlands. Category IV wetlands are the lowest functional class of regulated wetlands. Impacts to Category IV wetlands require compensatory mitigation.
Type S Streams Identification of mapped Type S streams. Type S streams are subject to shoreline regulations and could support salmonids.
Type F Streams Identification of mapped Type F streams. Type F streams are fish-bearing streams that could support salmonids.
Type N Streams Identification of mapped Type N streams. Type N streams are non-fish bearing.
Priority Habitats Identification of mapped state and local designated habitats for conservation priority.
Canopy Cover Approximate canopy cover as an indicator of existing trees.
Steep Slope Hazards Identification of mapped steep slope areas.
Floodplain Hazards Identification of mapped floodplains.
Liquification Hazards Identification of mapped liquefaction hazard areas.
Criteria related to engineering design considerations. Metrics include the presence/absence or quantity of the criteria within a 120-foot analysis area along the route options. Criteria metrics are not a representation of project related impacts.
Buildings Identification of mapped building data on parcels.
Collocated With Distribution Identification of areas where existing overhead distribution lines are present.