Niland Chiller Compressor B Replacement Project (No. 200294)


SCH Number
Public Agency
Imperial Irrigation District
Document Title
Niland Chiller Compressor B Replacement Project (No. 200294)
Document Type
NOE - Notice of Exemption
Document Description
The Niland Generating Station gas turbines Units 1 and 2 are critical for providing IID’s System Operations Center with voltage support, spin and non-spin reserve capacity and reactive regulation. The gas turbines are a key part of the IID resource portfolio by providing energy and ancillary services to the IID Balancing Authority. The Niland combustion gas turbines require an inlet air cooling system to reduce their temperature to below ambient when operating during high ambient temperature conditions. In July 2022, compressor B (one of two) ailed during operation. Upon inspection the compressor would not rotate due to extensive metal transfer from the tow rotors to the main rotor body casing causing severe damage and major impairment to various internal components. By replacing compressor B, IID increases the Niland plant’s inlet air cooling chiller system reliability and ensures the CGT units are capable of responding during high ambient temperature conditions demands.

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
402 East Beal Road in Niland, California, 92257

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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