Permit Issuance Notices Pursuant to Rule 1302(D)(3)(a)(i) and (ii)

The permit issuance actions listed below are being posted on this website for public notice and comment, pursuant to District Rule 1302 - Procedure. These notices will be posted for thirty (30) days after issuance. The permit application and all supporting information (including preliminary decision documents if any) will be provided upon request. Any person may request additional information regarding any permit issuance action, information on possible Hearing Board appeals or information on rejected comments, or information regarding how to request a public hearing on an action (if applicable). To make such a request contact the District by email at permittingapps@mdaqmd.ca.gov or in writing to MDAQMD, Attention: Executive Director, 14306 Park Avenue, Victorville CA 92392. Please note that public notices as required by Rule 1302(C)(7)(a) and (b) (such as Federal Operating Permit, Emission Reduction Credit consumption, significant health risk, major Modification, major Prevention of Significant Deterioration or Federally Significant issuances) are noticed separately on the District website and in newspapers of general circulation; please contact the District if you are looking for information on specific permitting actions or need assistance regarding the commenting process (there is a contact email link and a website link at the bottom of this page).

Facility ID Facility Description Facility Location Permit Number Permit Title Proposed Permitting Action Date Issued
4708 San Bernardino Sustainability Park 17900 Sheep Creek Road, Adelanto, CA 92301 DCP000231 DUST CONTROL PLAN (RULE 403(C)(6)(a) CONSTRUCTION/DEMOLITION) To obtain a Dust Control Plan Authorization in response to the submission of a complete DCP application package. 07/02/2026
4609 Crimson Solar Project Phase 2 - Cobalt 23895 Power Line Road, Desert Center, CA 92239 B015586 DIESEL IC ENGINE, GENERATOR Obtain an Authority to Construct permit for a new, stationary, diesel-fired ICE powering an electric generator for prime use. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum operating hours of 24 hours per day up to 8760 hours per year. The PTE for this permit unit is below the 25 tpy offset threshold. BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 07/02/2026
4679 NTC - Combined Heat and Power Plant Bldg. 602, 5th Street, Fort Irwin, CA 92310 DCP000230 DUST CONTROL PLAN (RULE 403(C)(6)(a) CONSTRUCTION/DEMOLITION) To obtain a Dust Control Plan Authorization in response to the submission of a complete DCP application package. 07/02/2026
4367 Lockhart Solar Project 43880 Harper Lake Rd., Hinkley, CA 92347 DCP000229 DUST CONTROL PLAN (RULE 403(C)(9) SOLAR PHOTOVOLTAIC PROJECT) To obtain an updated Dust Control Plan Authorization in response to the submission of a complete DCP application package. 07/02/2026
4700 Liberty Yermo - Helbro Well 04 0.24 Miles N of Yermo Rd on Nuggest Rd, Yermo, CA 92398 E015566 DIESEL IC ENGINE, EMERGENCY GENERATOR Obtain an Authority to Construct permit for a new, stationary, emergency, diesel-fired Internal Combustion Engine (ICE). This Permit Unit has a Nonattainment Air Pollutant PTE less than 25 pounds per day and less than 25 tons per year for NOx and VOC, and less than 15 tons per year for PM10, based on usage rates of 24 hours per day and 50 hours per year; therefore, BACT is not required pursuant to District Rule 1303(A). 07/02/2026
4704 VVUHSD - Transportation 14801 South Mojave Drive, Victorville, CA 92392 T015556 TANK, WASTE OIL STORAGE Obtain Authority to Construct (ATC) permit for operation of a waste oil storage tank. This waste oil tank was installed at least 10 years ago and has been in use ever since. 06/30/2026
4675 Harris Exploration - Stronghold Silver USA 8mi NE of Barstow, 4mi NW of Yermo, 1mi W of Calico Ghost Town, Barstow, CA 92311 B015512 DIESEL IC ENGINE, PORTABLE DRILLING EQUIPMENT Obtain an Authority to Construct permit for a new, portable, diesel-fired ICE powering the mechanical workings of a portable drill. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible use of 24 hours per day. The PTE for this permit unit is below the 25 tpy offset threshold based on a use of 8,760 hours annually. BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. NOTE: This unit is being permitted under the assumption there is not a superseding permit from any other governing agency. The operator was unable to give confirmation of any existing permits through PERP or DOORS. 06/30/2026
4705 Haynes Generating Station - Power Const. & Maint. District Wide, MDAQMD, CA 92392 C015559 HEPA VACUUM Issue a permit for HEPA Equipment (air pollution control device) to be used at various locations within the MDAQMD for Asbestos and Lead Abatement. Initial Location is 16800 Aster Rd, Adelanto, CA 06/24/2026
4705 Haynes Generating Station - Power Const. & Maint. District Wide, MDAQMD, CA 92392 C015558 HEPA VACUUM Issue a permit for HEPA Equipment (air pollution control device) to be used at various locations within the MDAQMD for Asbestos and Lead Abatement. Initial Location is 16800 Aster Rd, Adelanto, CA 06/24/2026
4705 Haynes Generating Station - Power Const. & Maint. District Wide, MDAQMD, CA 92392 C015557 HEPA VACUUM Issue a permit for HEPA Equipment (air pollution control device) to be used at various locations within the MDAQMD for Asbestos and Lead Abatement. Initial Location is 16800 Aster Rd, Adelanto, CA 06/24/2026
4205 Exquadrum - Victorville 13490 Forge Street, Victorville, CA 92392 B015540 HYPERGOLIC FUEL TEST STAND Obtain an Authority to Construct for the operation of a new rocket thruster test stand. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible operational hours of 24 hours per day, 8,760 hours per year. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/24/2026
4205 Exquadrum - Victorville 13490 Forge Street, Victorville, CA 92392 C015541 VAPOR SCRUBBING SYSTEM Obtain an Authority to Construct for the operation of a new rocket thruster test stand and associated scrubber system. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible operational hours of 24 hours per day, 8,760 hours per year. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/24/2026
589 NTC Training Mission Bldg. 602, 5th street, Fort Irwin, CA 923105085 B015554 HOT WATER BOILER, LPG/PROPANE (BLDG 298) Obtain an Authority to Construct for the operation of a new liquid propane gas (LPG) fired boiler. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible operational hours of 24 hours per day, 8,760 hours per year. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/22/2026
589 NTC Training Mission Bldg. 602, 5th street, Fort Irwin, CA 923105085 B015553 HOT WATER BOILER, LPG/PROPANE (BLDG 299) Obtain an Authority to Construct for the operation of a new liquid propane gas (LPG) fired boiler. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible operational hours of 24 hours per day, 8,760 hours per year. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/22/2026
2931 Verizon Wireless - Big Maria 9 miles North of, Blythe, CA 92225 E015539 LPG/PROPANE ICE, EMERGENCY GENERATOR Obtain an Authority to Construct permit for a new, stationary, LPG-fired ICE powering an electric generator for emergency use. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on 24 hours per day operation. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 C015547 SXS/SXT HCL ADSORBER #2 The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 C015546 SXS/SXT HCL ADSORBER #1 The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 C015545 SXS/SXT VOC ADSORBER #2 The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 C015544 SXS/SXT VOC ADSORBER #1 The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 B015543 SXT CIRCUIT (HEAVIES SEPARATION) The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
364 Mountain Pass Mine 67750 Bailey Road, Mountain Pass, CA 92366 B015542 SXS CIRCUIT (HEAVIES SEPARATION) The proposed processes are solvent extraction circuits that extract specific heavy rare earth elements present in the process stream from SXH under permit B011316 and prepare them for further processing. The proposed new equipment units are sources of VOC and HCl which is a HAP/TAC. HCl is present in the liquor received from SXH and the SXS and SXT processes utilize organic solvents which are a source of VOC to extract the desired rare earth minerals. The SDS for the organic solvents used indicate no HAP/TAC content therefore the only HAP/TAC emitted would be HCl. SXS and SXT equipment with the potential to emit VOC or HAP/TAC are vented to two VOC adsorbers and two HCl adsorbers with the following emission rates: VOC adsorber 1 PPMV VOC adsorber 1 PPMV HCl adsorber 5 PPMV HCl adsorber 5 PPMV Emission rates will be confirmed a photo-ionization detector (PID), flame-ionization detector (FID), or other method approved in writing by the Air Pollution Control Officer which is consistent with permits for like equipment held by this facility. 06/22/2026
1896 Chevron Stations #207815 3260 Wagon Train Road, Phelan, CA 92371 G005173 GASOLINE DISPENSING FACILITY CHEVRON IS PROPOSING THE FOLLOWING: - NEW 12K DIESEL TANK o NEW DIESEL VENT RACK o NEW TANK TOP SUMPS, PUMPS AND EQUIPMENT - REPLACE VEEDER ROOT TLS 350 MONITORING PANEL WITH NEW VEEDER ROOT TLS 450 - REPLACE ALL DISPENSERS, FLEX HOSES, SPANNERS - REPLACE ALL UDCS (DOUBLE WALL) o NEW 208 SENSORS, FLEX HOSES, BRAVO PENETRATION FITTINGS o ADDITIONAL CONDUIT PENETRATION - EXISTING 87 AND 91 TANK SCOPES: o INSTALL NEW SPILL BUCKETS o REPLACE ALL 209 SENSORS o INSTALL NEW FL-90 MP LIDS ON BOTH PRODUCTS o INSTALL NEW 32" TRASHCAN LIDS ON STP SUMP TOP HATS o ADJUST STP HEIGHTS. o ALL STP SUMPS: NEW FLEX KITS AND BALL VALVES o MOVE ATG FROM FILL SUMP TO STP SUMP o INSTALL NEW TANK TAGS - ADDITIONAL SCOPE: o ADD A NEW EMERGENCY SHUT-OFF NEAR AIR/WATER IN LANDSCAPE AREA o UPGRADE EXISTING EMERGENCY SHUT-OFF SWITCH NEAR C-STORE ENTRANCE o NEW POP, TRASH VALET, COLUMN CLADDING, DISPENSER FLAGS 06/18/2026
589 NTC Training Mission Bldg. 602, 5th street, Fort Irwin, CA 923105085 B014190 DIESEL IC ENGINE, PORTABLE* GENERATOR (RELOCATABLE COMBAT SUPPORT) To modify this existing permit in order to increase the operational hours and assign it to a permanent support location, in lieu of as a portable engine. This engine is requested to be permitted as a stationary unit with the ability to operate at the C1 and C2 facilities and is prohibited by permit condition from operation elsewhere within the NTC. 06/18/2026
4703 L3000 MP 0.99 - 3.04 Span End repair I-40 and Park Moabi Rd, Needles, CA 92363 DCP000228 DUST CONTROL PLAN (RULE 403(C)(6)(a) CONSTRUCTION/DEMOLITION) To obtain a Dust Control Plan Authorization in response to the submission of a complete DCP application package. 06/17/2026
4205 Exquadrum - Victorville 13490 Forge Street, Victorville, CA 92392 C015549 VAPOR SCRUBBING SYSTEM Obtain an Authority to Construct for the operation of a new rocket thruster test stand and associated scrubber system. This Permit Unit has a PTE less than 25 pounds per day of any Nonattainment Air Pollutant, based on the maximum possible operational hours of 24 hours per day, 8,760 hours per year. This Facility also has a PTE less than 25 tons per year of any Nonattainment Air Pollutant; therefore, BACT is not required, per District Rule 1303(A). See Applicable Rules for further discussion of NSR/T-NSR. 06/17/2026