Maps

This page shows the routes developed through the Community Advisory Process (CAP). Based on community feedback and input, Idaho Power selected a proposed route and alternate routes for the state and federal review processes. Visit the Maps page to view maps developed following the CAP.

Proposed Route | Route Alternatives | Revised Route Maps | Revised Routes - Detailed Evaluation | Initial Proposed Routes | Siting Criteria

Throughout the CAP Idaho Power worked with the communities to identify community criteria, develop a range of possible routes and recommend proposed and alternate routes. The maps shown below are categorized based on their mapping and/or analysis stage.

In June 2010, Idaho Power submitted the eastern route alternative as its proposed route in its revised right of way application (SF-299) to the Bureau of Land Management (BLM). Idaho Power also used this proposed route when it submitted the Notice of Intent to the Oregon Department of Energy (ODOE). The BLM and ODOE are proceeding with their separate application review processes. The proposed route and route alternatives are subject to change during the course of the state and federal review process.

Use the map below to review the proposed route.

• Proposed Route Overview (June 2010)
• Proposed Route Overview (April 2010)

The maps below are detailed segments of the proposed route and alternatives that Idaho Power submitted to the BLM and ODOE-EFSC.

Use the maps below to review the proposed and alternate routes.

County Key Map

During the March 2010 Project Advisory Team (PAT) meetings, Idaho Power presented three route alternatives and requested PAT feedback. Section level maps of the three alternatives can be found below.

• Route Alternatives Overview
• Route Alternatives – Section Level Map 1
• Route Alternatives – Section Level Map 2
• Route Alternatives – Section Level Map 3
• Route Alternatives – Section Level Map 4
• Route Alternatives – Section Level Map 5
• Route Alternatives – Section Level Map 6

Revised Route Maps

Following a preliminary evaluation, Idaho Power’s technical team revised the initial proposed routes to improve their potential permissibility. These revised routes are shown below.

• Revised Routes Overview	• Revised Route 4
• Revised Route 1	• Revised Route 5
• Revised Route 1A	• Revised Route 6
• Revised Route 2
• Revised Route 3

Revised Routes - Detailed Evaluation

Permitting, Constructability, Mitigation Cost | Region Overview | Analysis by Region | Region Maps

Idaho Power’s technical team conducted a detailed analysis of each of the revised routes to further evaluate their potential permitability, constructability and mitigation costs.

The maps below show a summary of the permitting, constructability and mitigation cost analysis for the revised routes.

• Revised Routes – Permitting Analysis
• Revised Routes – Constructability Analysis
• Revised Routes – Mitigation Cost Analysis

Idaho Power divided the revised routes into 14 regions for detailed analysis.

• Revised Routes – Region Overview
• Constraints Crossed – Permitting Difficulty: This table shows all of the constraints crossed by the various revised routes and the level of permitting difficulty associated with each constraint.

Each revised route was analyzed based on:

• Permitting difficulty: The relative difficulty of obtaining necessary permits from federal, state and local governments.
• Construction difficulty: The relative difficulty associated with building the line in a given route. Considerations include terrain, road construction, equipment movement and tree removal.
• Mitigation cost: The relative cost associated with mitigation actions required by permitting authorities necessary to permit a route.

As part of the analysis, Idaho Power identified which routes are considered to be the most reasonable for each region.

Idaho Power also prepared a mileage summary table and data table for each region.

• The mileage summary table identifies the number of miles that have:
• Permitting difficulty (low, moderate, high and exclusion)
• Construction difficulty (low, moderate and high)
• Mitigation costs (low, moderate and high)
• The data table summarizes the number of miles of regulatory and community criteria that apply to the route. (In addition to regulatory criteria, Project Advisory Teams identified community criteria that they wanted considered when determining a route. The “Community Siting Criteria” is described below.)

The analysis results, including the mileage summary table and data table, are shown below for each of the 14 regions. Please note that some regions may be located in more than one PAT area.

North PAT	Grant County PAT
• Boardman	• Blue Mountain
• Morgan – Ione	• Onion Creek
• Pilot Rock	• Southwest Region
• Umatilla National Forest
• West of National Forest Utility Corridor	Harney County PAT
	• Southwest Region
Central PAT
• Blue Mountain	South PAT
• Burnt River	• Burnt River
• Interpretive Center	• Snake River Valley
• Lime	• Southwest Region
• Onion Creek	• West of Vale
• Weatherby

Initial Proposed Route Maps and Preliminary Evaluation

The initial proposed routes were developed by the PATs during mapping sessions held in fall 2009. Idaho Power’s technical team then evaluated each of the routes for potential permitability.

The PAT initial proposed routes map designates a number for each route. The route numbers are organized by the north, central and south areas.

• PAT Initial Proposed Routes Map (PDF, 1.9 MB)

The PAT initial proposed routes and preliminary evaluation criteria are shown below. Refer to the map index to locate the designated route number.

Map	Preliminary Evaluation Criteria
North
• Route N4	Route N4 Preliminary Evaluation
• Route N6	Route N6 Preliminary Evaluation
• Route N7	Route N7 Preliminary Evaluation
• Route N8	Route N8 Preliminary Evaluation
• Route N9	Route N9 Preliminary Evaluation
• Route N10	Route N10 Preliminary Evaluation
• Route N11	Route N11 Preliminary Evaluation
• Route N16	Route N16 Preliminary Evaluation
• Route N24	Route N24 Preliminary Evaluation
• Route N26	Route N26 Preliminary Evaluation
• Route N28	Route N28 Preliminary Evaluation
• Route N29	Route N29 Preliminary Evaluation
• Route N30	Route N30 Preliminary Evaluation
• Route N31	Route N31 Preliminary Evaluation
• Route N32	Route N32 Preliminary Evaluation
Central
• Route C3	Route C3 Preliminary Evaluation
• Route C4A	Route C4A Preliminary Evaluation
• Route C4B	Route C4B Preliminary Evaluation
• Route C4C	Route C4C Preliminary Evaluation
• Route C6	Route C6 Preliminary Evaluation
• Route C8A	Route C8A Preliminary Evaluation
• Route C8B	Route C8B Preliminary Evaluation
• Route C8C	Route C8C Preliminary Evaluation
• Route C8D	Route C8D Preliminary Evaluation
• Route C8E	Route C8E Preliminary Evaluation
• Route C8F	Route C8F Preliminary Evaluation
• Route C9	Route C9 Preliminary Evaluation
• Route C11	Route C11 Preliminary Evaluation
• Route C13	Route C13 Preliminary Evaluation
• Route C17A	Route C17A Preliminary Evaluation
• Route C17B	Route C17B Preliminary Evaluation
• Route C18	Route C18 Preliminary Evaluation
• Route C21	Route C21 Preliminary Evaluation
• Route C24	Route C24 Preliminary Evaluation
• Route C25	Route C25 Preliminary Evaluation
• Route C40	Route C40 Preliminary Evaluation
• Route C41	Route C41 Preliminary Evaluation
South
• Route S6	Route S6 Preliminary Evaluation
• Route S7	Route S7 Preliminary Evaluation
• Route S9	Route S9 Preliminary Evaluation
• Route S13	Route S13 Preliminary Evaluation
• Route S17	Route S17 Preliminary Evaluation
• Route S18	Route S18 Preliminary Evaluation
• Route S19	Route S19 Preliminary Evaluation
• Route S20	Route S20 Preliminary Evaluation
• Route S21	Route S21 Preliminary Evaluation
• Route S23	Route S23 Preliminary Evaluation
• Route S25	Route S25 Preliminary Evaluation
• Route S29	Route S29 Preliminary Evaluation
• Route S30A	Route S30A Preliminary Evaluation
• Route S30B	Route S30B Preliminary Evaluation
• Route S96	Route S96 Preliminary Evaluation
• Route S107	Route S107 Preliminary Evaluation
• Route H7	Route H7 Preliminary Evaluation
• Route H8	Route H8 Preliminary Evaluation
Grant County
• Initial Proposed Routes – Grant County

The PATs and the public identified community, natural, cultural and physical resources that should be considered by Idaho Power when siting the transmission line route. Idaho Power reviewed these resources and identified additional siting criteria. The siting criteria shown below were used in the development and analysis of the initial proposed routes.

• Community Siting Criteria - Opportunities and Constraints
• Community and Idaho Power Siting Criteria - Opportunities and Constraints*

*Community-identified resources are highlighted in blue.

This website is the joint Boardman to Hemingway Transmission Line Project site. Information contained on this site is approved for posting by Idaho Power. Visit the Idaho Power website.