CASE FILE NUMBER: CACA-50661
DOCUMENT NUMBER: CA-670-2009-082

Imperial Irrigation District has submitted a right-of-way (ROW) application to construct, operate, and maintain a 230 kV transmission line (referred to as the ID Line) and substation improvements between the Imperial Valley (IV) and Dixieland Substations.

The Proposed Action consists of the construction and operation of the electrical transmission line that would connect from the Dixieland Substation to the Imperial Valley substation with Dixieland substation improvements. The transmission line would be located within a new 140-foot-wide right-of-way (ROW) through both federal and nonfederal lands.

The transmission line would consist of single-monopole structures. Depending on the final route chosen, span lengths will generally be 650 to 900 feet. In addition to a new transmission line, IID is proposing to construct a new 230-kV substation approximately 400 or 1,276 feet north of the IV Substation (proposed Liebert Substation).

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Environmental Assessment

Cover - Chapter 1 Cover, Table of Contents, Executive Summary and Introduction; 2.7Mb

Chapter 2 Proposed Action and Alternatives; 6.8Mb

Chapter 3 Affected Environment, Impacts and Mitigation; 8.7Mb

Chapter 4 Cumulative Analysis; 1.7Mb

Chapter 5 Consultation and Coordination; 0.1Mb

Chapter 6 References; 0.1Mb

Appendix A CEQA Initial Study Checklist; 0.1Mb

Appendix B IID Scope of Work; 0.8Mb

Appendix C Air Quality Calculations; 0.1Mb

Appendix D HAZMAT Database Search; 0.2Mb

Appendix E Biological Resources Technical Report; 20Mb

Appendix F Cultural Resources Technical Report (Confidential)

Appendix G Mitigation Monitoring and Reporting Program; 0.2Mb