NOTICE OF PRELIMINARY DECISION BY

THE IMPERIAL COUNTY AIR POLLUTION CONTROL DISTRICT TO

ISSUE AN AUTHORITY TO CONSTRUCT PERMIT TO

ORMAT NEVADA, INC. HEBER GEOTHERMAL COMPLEX,

FOR THE INSTALLATION OF A NEW 25-MEGAWATT

ORMAT ENERGY CONVERTER UNIT

Permit:

2217A-8

Company:

ORMAT NEVADA, INC. HEBER GEOTHERMAL COMPLEX

Closing Date:

06/22/2026

Pursuant to Rule 206 of Imperial County Air Pollution Control District (ICAPCD) Rules and Regulations, the Air Pollution Control Officer (APCO) has made a preliminary decision to grant an Authority to Construct permit to Ormat Nevada, Inc. Heber Geothermal Complex facility, for the installation of a new 25-megawatt Ormat Energy Converter Unit. The project described herein will be conducted at the facility located at 855 Dogwood Road, Heber CA. Authority to Construct Permit No. 2217A-8 will include conditions to ensure that all ICAPCD requirements will be satisfied.

 

The Public has an opportunity to submit comments on the proposed project. Written comments regarding the proposed decision will be received by the ICAPCD for a period of thirty (30) days after publication of this notice. The closing date for comments will be June 22, 2026. Please direct your comments to the attention of Jesus Ramirez, by mailing them to

Imperial County Air Pollution Control District, 150 South Ninth Street, El Centro, CA 92243, or via e-mail at jesusramirez@co.imperial.ca.us. Draft ATC 2217A-8, the permit application, and supporting documentation may be examined at the Imperial County Air Pollution Control District Office, located at 150 South Ninth Street, El Centro, CA 92243, and online at apcd.imperialcounty.org/public-notices/.

 

If you have any questions or would like to receive additional information about this matter, please contact Victor H. Mendez, APC Engineer or Jesus Ramirez, APC Division Manager, at (442) 265-1800.

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NOTICE OF PRELIMINARY DECISION / AVISO DE DECISION PRELIMINAR

District Hearing Board Notices

TIME

NOTICE OF DISTRICT HEARING

Hearing Date

12:00pm

District Hearing Board – Western Mesquite Mines, Inc. (Appeal Hearing 05-24APL)

12/31/2026

Hearing Information

County of Imperial

Air Pollution Control District Hearing Board Hearing

Appeal Hearing 05-24APL

CONTINUED UNTIL FURTHER NOTICE

NOTICE IS HEREBY GIVEN that the public hearing originally scheduled to be held on Wednesday, November 12, 2025, at 12:00 pm at the Imperial County Air Pollution Control District office located at 150 South 9th Street, El Centro, CA 92243 has been continued until further notice. The purpose of this hearing is to consider an appeal (05-24APL) by Western Mesquite Mines, Inc. located at 6502 E. Hwy. 78, Brawley CA 92227. The appeal is for denial by the Air Pollution Control Officer regarding the interpretation of Rule 206 and Rule 211 for an application for modification of Permit to Operate No. 1920C-7.

 

Documentation of this request is on file at the Air District office, located at 150 South 9th St., El Centro, CA 92243.

 

All interested persons desiring to present evidence on this term may appear at the hearing, and upon being sworn, may provide testimony. For additional information, contact the Imperial County Air Pollution Control District at (442) 265-1800.

THE HEARING BOARD OF THE

IMPERIAL COUNTY AIR POLLUTION

CONTROL DISTRICT

By: Cassi Justice

Clerk of the Hearing Board

Date: November 4, 2025

Related Links

District Hearing Board Notices

TIME

NOTICE OF DISTRICT HEARING

Hearing Date

12:00pm

District Hearing Board – Western Mesquite Mines, Inc. (Appeal Hearing 04-24APL)

11/12/2025

Hearing Information

County of Imperial

Air Pollution Control District Hearing Board Hearing

Appeal Hearing 04-24APL

CONTINUED UNTIL FURTHER NOTICE

NOTICE IS HEREBY GIVEN that the public hearing to be held on Wednesday, November 12, 2025, at 12:00 pm at the Imperial County Air Pollution Control District office located at 150 South 9th Street, El Centro, CA 92243 has been continued until further notice. The purpose of this hearing is to consider an appeal (04-24APL) made by Western Mesquite Mines, Inc. located at 6502 E. US Hwy. 78, Brawley, CA 92227. The appeal is for denial by the Air Pollution Control Officer regarding the removal of all “motor vehicles” from Permit to Operate No. 1920C-7, as per Imperial County Air Pollution Control District Rule 202.E.2.a, detailed below:

 

RULE 202-EXEMPTIONS

E.2 – Vehicles

E.2.a – Motor Vehicles as defined by the Vehicle Code of the State of California but not including any article, machine, equipment, or other contrivance mounted on such vehicle that would otherwise require a permit under the provisions of these rules and regulations.

 

Documentation of this request is on file at the Air District office, located at 150 South 9th St. El Centro, CA 92243.

 

All interested persons desiring to present evidence on this term may appear at the hearing, and upon being sworn, may provide testimony. For additional information, contact the Imperial County Air Pollution Control District at (442) 265-1800.

THE HEARING BOARD OF THE

IMPERIAL COUNTY AIR POLLUTION

CONTROL DISTRICT

By: Cassi Justice

Clerk of the Hearing Board

Date: November 4, 2025

Related Links

PUBLIC HEARING

Changes in ambient concentrations are displayed by the Air Quality Index as moderate or unhealthy.

TIME

NOTICE OF PUBLIC HEARING

Hearing Date

Not Schedule

NO SCHEDULED PUBLIC HEARINGS

12/31/2024

Public Hearing Information

There are no scheduled meetings at this time.

Related Links

NOTICE OF AVAILABILITY

RULE 310 OPERATIONAL DEVELOPMENT FEE

ANNUAL ACCOUNTABILITY REPORT FY 2023-2024

On November 6, 2007, the Imperial County Air Pollution Control District Board of Directors adopted Rule 310 Operational Development Fee as a mechanism to help mitigate air impacts resulting from the operation of new commercial and residential developments in Imperial County. Redistribution of collected funds during a given fiscal year provide a sound method for emission reduction projects throughout Imperial County.

 

Section E.7 of Rule 310 requires the ICAPCD to prepare and publish on August 1st of each calendar year an annual accountability report which discloses the total

amount of off-site fees received; total monies spent; total monies remaining; a list of all projects funded; total emissions reductions realized; and the overall cost-effectiveness factor for the projects funded. The published report covers fiscal year 2023-2024. 

 

You may view a hard copy of the Rule 310 accountability report by visiting the main air pollution control office at 150 S 9th Street in El Centro, CA.

For information regarding the request for proposal for mitigation projects funded by the Rule 310 program visit our Request for Proposal webpage.

Related Links

NOTICE OF AVAILABILITY

High winds have the potential to suspend particulate matter into the air potentially causing significant changes in ambient concentrations that may pose a health concern. When high winds cause an exceedance of the National Ambient Air Quality Standard for particulate matter of less than 10 microns and certain meteorological conditions exist that allow for the classification of a meteorological event, seasonal or otherwise, evidence may demonstrate that the exceedance was caused by an Exceptional Event.

For questions or concerns please contact Monica Soucier at monicasoucier@co.imperial.ca.us.

NOTICE OF AVAILABILITY OF THE OCCURRENCE OF AN EXCEPTIONAL EVENT DEMONSTRATIONS

The Imperial County Air Pollution Control District (Air District) has prepared seven Draft Exceptional Event (EE) Demonstrations which support the requested exclusion of the measured 24-hour concentrations at the Air District air monitoring sites. Listed below by date, site and concentration as measured by a continuous Federal Equivalent Method monitor (FEM) are the seven Draft EE’s prepared by the Air District.

April 11-12, 2018; Niland-191 ug/m3; Brawley-183 ug/m3; Calexico-182 ug/m3; El Centro-159 ug/m3

April 16, 2018; Brawley-407 ug/m3; Calexico-407 ug/m3; El Centro-173 ug/m3; Niland-222 ug/m3; Westmorland-351 ug/m3

April 19, 2018; Brawley-334 ug/m3; Calexico-178 ug/m3; Westmorland-186 ug/m3

April 29, 2018 to May 1, 2018; Brawley-310 ug/m3; Niland-243 ug/m3; Westmorland-206 ug/m3; Brawley-270 ug/m3; Niland-162 ug/m3; Westmorland-207 ug/m3; Brawley-157 ug/m3

May 11, 2018; Brawley-335 ug/m3; El Centro-166 ug/m3; Niland-215 ug/m3; Westmorland-414 ug/m3

May 25, 2018; Brawley-159 ug/m3; Calexico-156 ug/m3

June 17, 2018; Brawley-168 ug/m3

The public and all interested parties are encouraged to review and comment on the seven Draft EE’s for listed above. These demonstrations provide the supporting evidence that on the days indicated for 2018 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The seven Draft EE’s provide the scientific justification for the requested exclusion. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is October 20, 2019 by close of business.

To view hard copies of the Draft EE demonstrations, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier

The Imperial County Air Pollution Control District (Air District) has prepared seven Draft Exceptional Event (EE) Demonstrations which support the requested exclusion of the measured 24-hour concentrations at the Air District air monitoring sites. Listed below by date, site and concentration as measured by a continuous Federal Equivalent Method monitor (FEM) are the seven Draft EE’s prepared by the Air District.

June 23, 2018; Niland-163 ug/m3

June 28, 2018; Niland-173 ug/m3

July 9, 2018; Brawley-230 ug/m3; Calexico-307 ug/m3; El Centro-256 ug/m3; Niland-181 ug/m3; Westmorland-186 ug/m3

August 20, 2018; El Centro-162 ug/m3

October 3, 2018; Westmorland-169 ug/m3


October 6, 2018; Brawley-181 ug/m3

November 29, 2018; Niland-331 ug/m3; Westmorland-296 ug/m3

The public and all interested parties are encouraged to review and comment on the seven Draft EE’s for listed above. These demonstrations provide the supporting evidence that on the days indicated for 2018 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The seven Draft EE’s provide the scientific justification for the requested exclusion. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is October 20, 2019 by close of business.

To view hard copies of the Draft EE demonstrations, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier

Date of Notice

Closing Date

Related Links

NOTICE OF AVAILABILITY

High winds have the potential to suspend particulate matter into the air potentially causing significant changes in ambient concentrations that may pose a health concern. When high winds cause an exceedance of the National Ambient Air Quality Standard for particulate matter of less than 10 microns and certain meteorological conditions exist that allow for the classification of a meteorological event, seasonal or otherwise, evidence may demonstrate that the exceedance was caused by an Exceptional Event.

For questions or concerns please contact Monica Soucier at monicasoucier@co.imperial.ca.us.

NOTICE OF AVAILABILITY OF THE OCCURRENCE OF AN EXCEPTIONAL EVENT DEMONSTRATIONS

The Imperial County Air Pollution Control District (Air District) has prepared three Draft Exceptional Event (EE) Demonstrations, which support the requested exclusion of the measured 24-hour concentrations at the Air District air monitoring sites. Listed below by date, site and concentration as measured by a continuous Federal Equivalent Method monitor (FEM) are the three Draft EE’s prepared by the Air District.

January 20, 2018; Brawley-163 ug/m3; Calexic -225 ug/m3

February 11, 2018; Calexico-172 ug/m3

February 19, 2018; Brawley-224 ug/m3; Calexico-182 ug/m3; El Centro-230 ug/m3; Niland-193 ug/m3

The public and all interested parties are encouraged to review and comment on the three Draft EE’s listed above. These demonstrations provide the supporting evidence that on the days indicated for 2018 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The three Draft EE’s provide the scientific justification for the requested exclusion. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is October 10, 2019 by close of business.

To view hard copies of the Draft EE demonstrations, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier

Date of Notice

Closing Date

Related Links

NOTICE OF AVAILABILITY

High winds have the potential to suspend particulate matter into the air potentially causing significant changes in ambient concentrations that may pose a health concern. When high winds cause an exceedance of the National Ambient Air Quality Standard for particulate matter of less than 10 microns and certain meteorological conditions exist that allow for the classification of a meteorological event, seasonal or otherwise, evidence may demonstrate that the exceedance was caused by an Exceptional Event.

For questions or concerns please contact Monica Soucier at monicasoucier@co.imperial.ca.us.

NOTICE OF AVAILABILITY OF THE OCCURRENCE OF AN EXCEPTIONAL EVENT DEMONSTRATIONS

The Imperial County Air Pollution Control District (Air District) has prepared six Draft Exceptional Event (EE) Demonstrations which support the requested exclusion of the measured 24-hour concentrations at the Air District air monitoring sites. Listed below by date, site and concentration as measured by a continuous Federal Equivalent Method monitor (FEM) are the six Draft EE’s prepared by the Air District.

July 23, 2017; Calexico – 159 ug/m3

September 2, 2017; El Centro-158 ug/m3

September 13-14, 2017; Brawley-155 ug/m3 and 163 ug/m3; El Centro-164 ug/m3; Westmorland-186 ug/m3 and 175 ug/m3

September 21, 2017; Calexico-273 ug/m3

October 20, 2017; Brawley-424 ug/m3; Calexico-319 ug/m3; El Centro-187ug/m3; Niland-236 ug/m3; Westmorland-337 ug/m3

December 20, 2017; Brawley-158 ug/m3; Westmorland-169 ug/m3

The public and all interested parties are encouraged to review and comment on the six Draft EE’s for listed above. These demonstrations provide the supporting evidence that on the days indicated for 2017 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The six Draft EE’s provide the scientific justification for the requested exclusion. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is October 3, 2019 by close of business.

To view hard copies of the Draft EE demonstrations, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier

Date of Notice

Closing Date

Related Links

NOTICE OF AVAILABILITY

High winds have the potential to suspend particulate matter into the air potentially causing significant changes in ambient concentrations that may pose a health concern. When high winds cause an exceedance of the National Ambient Air Quality Standard for particulate matter of less than 10 microns and certain meteorological conditions exist that allow for the classification of a meteorological event, seasonal or otherwise, evidence may demonstrate that the exceedance was caused by an Exceptional Event.

Changes in ambient concentrations are displayed by the Air Quality Index as moderate or unhealthy.

NOTICE OF AVAILABILITY OF THE OCCURRENCE OF AN EXCEPTIONAL EVENT DEMONSTRATIONS

The Imperial County Air Pollution Control District (Air District) has prepared four Draft Exceptional Event (EE) Demonstrations which support the requested exclusion of the measured 24-hour concentrations at the Air District air monitoring sites. Listed below by date, site and concentration as measured by a continuous Federal Equivalent Method monitor (FEM) are the four Draft EE’s prepared by the Air District.

February 17, 2017; Niland – 247 ug/m3

March 30, 2017; Brawley – 180 ug/m3; Calexico-167 ug/m3; El Centro-196 ug/m3; Niland-227 ug/m3; Westmorland-214 ug/m3

May 6, 2017; Brawley-449 ug/m3; Calexico-409 ug/m3; El Centro-268 ug/m3; Niland-345 ug/m3; Westmorland-297 ug/m3

May 15, 2017; Brawley-190 ug/m3; Westmorland-246 ug/m3

May 25, 2017; Brawley-164 ug/m3

The public and all interested parties are encouraged to review and comment on the four Draft EE’s for listed above. These demonstrations provide the supporting evidence that on the days indicated for 2017 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The four Draft EE’s provide the scientific justification for the requested exclusion. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is September 6, 2019 by close of business.

To view hard copies of the Draft EE demonstrations, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier

Date of Notice

Closing Date

Related Links