G3 Modification to Existing Geothermal Power Plant [Mammoth Pacific / Ormat]

Summary

SCH Number
2014028074
Lead Agency
Great Basin Air Pollution Control District
Document Title
G3 Modification to Existing Geothermal Power Plant [Mammoth Pacific / Ormat]
Document Type
NOE - Notice of Exemption
Received

Document Description
In-kind replacement of this equipment and fluid; Turbines, Heat exchangers, Air cooling bundles (tubes), Piping, and changing out the Corken Unit for a proprietary Ormat Vapor Recovery Maintenance Unit (OVRMU), both devices emit ambient air that has entered the working fluid, and changing the "working" fluid from isobutane to n-butane [both VOCs, neither GHGs or HAPs]. No change in; emissions, Megawatts produced, Brine usage, Wells used, No new facilities or structures, and No change in height or elevation or footprint of plant.

Contact Information
Theodore D. Schade
Great Basin Air Pollution Control District
157 Short Street
Bishop, CA 93514-3537

(760) 872-8211

Location

Cities
Mammoth Lakes
Counties
Mono

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15301
Reasons for Exemption
The in-kind replacement of equipment at the G3 geothermal power plant will cause no change in emissions, megawatts, brine usage, wells used, no new facilities or structures and no change in height or elevation or footprint of the plant, and will have no significant effect on the environment.
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