Facility Info

364
Mountain Pass Mine

67750 Bailey Road
Mountain Pass, CA 92366
Phone: 760-856-7664
Fax: N/A
10/17/07 Rec'd a change of owner applications for all the permits currently under Union Oil Molycorp. The change is going from Union Oil Molycorp to Chevron Mining, Inc. The company/facility numbers will be staying the same. (005/0364) Barbara Weese 08-08-2017 Moved Companies From Molycorp Minerals, LLC(5) to MP Mine Operations LLC(2349)

Permit Number Permit Description Equipment Description Issue Date Expiration Date Action
B004035 LEAD CINDER/FLY ASH STABILIZATION PROCESS N/A 04/01/1999 02/29/2000 Download Permit
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B004088 CERIUM 90 LEACH CIRCUIT Feed Slurry Tank, with agitator @ 0.3 hp 3 Leac... 04/09/2001 02/28/2002 Download Permit
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B004090 No. 2 SODA ASH FEED PROCESS Soda Ash Storage Bin, 10,000 gal Total hp = 10.... 02/15/2011 02/29/2012 Download Permit
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B004093 WASTEWATER TREATMENT SYSTEM N/A 04/09/2001 02/28/2002 Download Permit
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B004100 LEACH RESIDUE (CERIUM-96 PLANT) CIRCUIT N/A 02/10/2026 02/28/2027 Download Permit
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B004325 AQUA AMMONIA (15%) SYSTEM a Storage Tank for 15% Aqua Ammonia, 30 ft diame... 04/09/2001 02/28/2002 Download Permit
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B004333 YTTRIUM PRECIPITATION - SPECIALTY PLANT N/A 02/15/2011 02/29/2012 Download Permit
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B004489 STABILIZED LEAD/IRON REINTRODUCTION PROCESS N/A 02/15/2011 02/29/2012 Download Permit
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B004664 RIBBON BLENDER DRYER a skid mounted unit, 4 ft diameter by 15 ft long... 02/10/2026 02/28/2027 Download Permit
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B004923 SPECIALTY PLANT No. 1 NEODYMIUM DRYER N/A 02/10/2026 02/28/2027 Download Permit
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B004924 SPECIALTY PLANT No. 2 NEODYMIUM DRYER N/A 02/10/2026 02/28/2027 Download Permit
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B004933 LEACH CIRCUIT - FLOATATION PLANT N/A 02/15/2011 02/29/2012 Download Permit
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B007791 PORTABLE IMPACT CRUSHER a Crush Boss (TM) 6356 Horizontal Shaft Impactor... 04/14/2000 02/28/2001 Download Permit
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B008263 FLOTATION REAGENT HANDLING SYSTEM Granular Ultrazine reagent unloading, handling a... 02/15/2011 02/29/2012 Download Permit
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B008294 Temporary Rare Earth Packaging System a Gap-Vax HV-57 truck and trailer mounted cyclon... 03/13/2002 02/28/2003 Download Permit
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B008344 ALTERNATE TEMPORARY RARE EARTH PACKAGING SYSTEM Stationary Screen (3" x 3"), and packaging hoppe... 03/19/2002 02/28/2003 Download Permit
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B008348 TEMPORARY LANTHANUM PACKAGING SYSTEM CEC Series II truck mounted screening plant (fee... 04/04/2002 02/28/2003 Download Permit
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B008794 TEMPORARY PACKAGING SYSTEM Stationary grizzly screen and hopper (serving sl... 02/13/2012 02/28/2013 Download Permit
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B011111 COMBUSTION TURBINE GENERATOR #1 14.5 MW Solar Model Titan 130, 156 MMBtu/hr natu... 03/04/2026 02/28/2027 Download Permit
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B011112 COOLING TOWER #1 One-two cell cooling tower, manufacturer and mod... 02/25/2020 02/28/2021 Download Permit
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B011184 COMBUSTION TURBINE GENERATOR #2 14.5 MW Solar Model Titan 130, 156 MMBtu/hr natu... 03/04/2026 02/28/2027 Download Permit
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B011177 COOLING TOWER #2 One-two cell cooling tower, manufacturer and mod... 02/25/2020 02/28/2021 Download Permit
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B011185 COMBUSTION TURBINE GENERATOR #3 12.3 MW Solar Model Titan 130, 143 MMBtu/hr natu... 08/08/2017 02/28/2018 Download Permit
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B011186 COMBUSTION TURBINE GENERATOR #4 12.3 MW Solar Model Titan 130, 143 MMBtu/hr natu... 01/17/2013 02/28/2014 Download Permit
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B011248 CRACK PHASE 1A PROCESS EQUIPMENT N/A 02/10/2026 02/28/2027 Download Permit
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