Map Archive

This page provides information related to the early phases of the CAP routing process. Visit the Maps page to view the current CAP proposed routes.

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

This Web site 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 Web site.