R9UIC-CA1-FY16-1: San Joaquin Refining Company Inc., Bakersfield, CA

Documents relating to EPA's issuance of a federal Underground Injection Control (UIC) Class I Non-hazardous Industrial Waste Disposal Well Permit to San Joaquin Refinery Company Inc. (SJR), located in Bakersfield, CA.

The permit authorizes SJR to continue operating one (1) active, existing well: WD-1, and potentially install one (1) proposed additional well: WD-2. The UIC Class I Permit authorizes injection of non-hazardous waste generated from the San Joaquin Refinery into the Santa Margarita Formation, at depths ranging between 4,020’ to 4,225’ below ground surface, over a ten (10) year period.

• Fact Sheet: Draft Modification to Permit No. R9UIC-CA1-FY16-1 issued to San Joaquin Refining Company Inc. (pdf) (294.67 KB, October 2026)
  Fact sheet for a draft modification to the Underground Injection Control (UIC) Class I Non-hazardous Industrial Waste Disposal Well Permit No. R9UIC-CA1-FY16-1 issued to San Joaquin Refining Company Inc. in May 2020. The purpose of this fact sheet is to briefly describe the draft permit modification and the public comment process associated with the permit modification.
• DRAFT Modification to Permit No. R9UIC-CA1-FY16-1 issued to San Joaquin Refining Company Inc. (pdf) (214.91 KB, October 2026)
  In accordance with 40 C.F.R. § 144.39, the UIC Class I Permit No. R9UIC-CA1-FY16-1 for the San Joaquin Refining Company Inc., effective on May 4, 2020, is hereby modified at the Permittee’s request to change the Step-Rate Test (SRT) requirements.
• Minor Modification to Permit No. R9UIC-CA1-FY16-1 MASIP: San Joaquin Refining Company Inc. (pdf) (270.38 KB, March 10, 2025)
  Minor modification to UIC Class I Permit No. R9UIC-CA1-FY16-1, issued to San Joaquin Refining Company Inc., Bakersfield, CA. This minor modification reflects an updated maximum allowable surface injection pressure for WD-1 and WD-2.
• Minor Modification to Permit No. R9UIC-CA1-FY16-1: San Joaquin Refining Company Limited (pdf) (374.7 KB, December 19, 2023)
  Underground Injection Control (UIC) permit no. R9UIC-CA1-FY16-1 issued to San Joaquin Refining Company Limited is hereby modified to reflect changes in the well construction of WD-2. Specifically, the modification revises the approved perforated injection intervals of the well. Portions of Part II.B.6 of the Permit and figures of WD-2 in Appendix B are revised to incorporate the above changes.
• Major Modification to UIC Permit No. R9UIC-CA1-FY16-1: San Joaquin Refining Company Limited (pdf) (374.43 KB, June 2, 2022)
  This major modification reflects a revised method for calculating the maximum allowable surface injection pressure for Well San Joaquin Refining Company WD-1 stipulated in Part II, Section D.3.a. of the Permit.
• UIC Class I Permit No. R9UIC-CA1-FY16-1: San Joaquin Refining Company Limited (pdf) (342.96 KB, May 4, 2020)
  Final Underground Injection Control (UIC) Class I Permit for injection operations for San Joaquin Refining Company Limited., Bakersfield, CA.
• EPA Fact Sheet: UIC Class I Permit No. R9UIC-CA1-FY16-1; San Joaquin Refining Company Limited (pdf) (193.41 KB, January 2020)
  Facts and considerations related to the issuance of UIC permit No. R9UIC-CA1-FY16-1 to San Joaquin Refining Company Limited, including background information, facility description, and permit conditions.
• Appendices: UIC Permit R9UIC-CA1-FY16-1; San Joaquin Refining Company Limited (pdf) (3.4 MB, May 4, 2020)
  Appendices A-H to the Final Underground Injection Control (UIC) Class I Non-hazardous Industrial Waste Disposal Well Permit for San Joaquin Refining Company Limited, Bakersfield, CA.