Coachella U1 Turbine Repairs Project (No. 10635858)


SCH Number
Public Agency
Imperial Irrigation District
Document Title
Coachella U1 Turbine Repairs Project (No. 10635858)
Document Type
NOE - Notice of Exemption
Document Description
On the basis of evidence found during recent inspections and tests of the Coachella U1 turbine: rust and debris on the inlet floor, damage to the leading edges of multiple first stage buckets (a turbine bucket includes a leading edge, a trailing edge, a root portion and a tip portion), damage to the exhaust baffles. Repairs of the turbine were indicated. The repairs consist of: turbine disassembly, hot gas path inspection, performance of leak test procedure on assembled nozzles, turbine case removal, removal and replacement of first stage buckets and row one nozzles, installation of turbine case and unit startup. The gas turbines are a key part of the IID resource portfolio by providing energy and ancillary services to the IID Balancing Authority. The repairs will result in reduced life cycle costs and increased reliability of the unit for restoration of IID’s bulk electric system in the event of a partial or total blackout of the IID system.

Contact Information

Donald Vargas
Agency Name
Imperial Irrigation District
Job Title
Environmental Compliance Administrator
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project


Citywide, Countywide
Other Location Info
Northeast corner of Shady Lane and Bagdad Avenue in Coachella, California.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Sec.15302 (Class 2)
Reasons for Exemption
The project is exempt under Section 15302 (Class 2 exemption) for the reason that it entails the replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced, this exemption includes but is not limited to the replacement or reconstruction of existing utility systems and/or facilities involving negligible or no expansion of capacity.
County Clerk


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