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Underground Injection Control (UIC)
Contact Us

UIC Class I Permit No. R9UIC-CA1-FY17-4: Chalk Cliff Limited, Maricopa, CA

Contact

Yenhung Ho (ho.yenhung@epa.gov)
(415) 972-3262

Return to: UIC Permits in Region 9

UIC Class I non-hazardous waste injection well facility with one (1) existing injection well, known as Well Chalk Cliff WD-2, located at the Chalk Cliff Power Plant in Maricopa, California.

If you experience a problem reading a document with assistive technology, please contact us.

  • Major Modification to UIC Permit No. R9UIC-CA1-FY17-4 (pdf) (315.79 KB, June 2, 2022)
    This major modification reflects a revised method for calculating the maximum allowable surface injection pressure for Well Chalk Cliff WD-2 stipulated in Part II, Section D.3.a. of the Permit.
  • Minor Modification to UIC Permit No. R9UIC-CA1-FY17-4 (pdf) (224.26 KB, April 23, 2021)
    This minor modification addresses specific financial assurance conditions stipulated in Paragraph II.G of Permit No. R9UIC-CA1-FY17-4 issued to Chalk Cliff Limited, Well Chalk Cliff WD-2, Maricopa, California.
  • Notice of Final Permit Decision (pdf) (172.39 KB, September 29, 2020)
    Formal notice of the permit decision, explanation of the appeals process, and the final permit effective date for Class I Non-Hazardous Permit No. R9UIC-CA1-FY17-4 issued to Chalk Cliff Limited.
  • Response to Comments (pdf) (141.67 KB, September 28, 2020)
    Provides a summary of the comment received during the public comment period and response to the comments concerning Class I UIC Permit No. R9UIC-CA1-FY17-4 for Chalk Cliff Limited.
  • Class I UIC Permit No. R9UIC-CA1-FY17-4 for Chalk Cliff Limited (pdf) (412.97 KB, September 29, 2020)
    Final Class I Non-hazardous Industrial Waste Injection Well Permit No. R9UIC-CA1-FY17-4 for injection operations at Chalk Cliff Limited, Maricopa, CA.
  • EPA Fact Sheet: UIC Permit No. R9UIC-CA1-FY17-4 for Chalk Cliff Limited (pdf) (246.8 KB, September 29, 2020)
    This Fact Sheet describes the principal facts and considerations for UIC Permit No. R9UIC-CA1-FY17-4 for Chalk Cliff Limited, including background information, facility description, and information on permit conditions.
  • Appendices: UIC Permit No. R9UIC-CA1-FY17-4 for Chalk Cliff Limited (pdf) (2.86 MB, August 13, 2020)
    Appendices A-I to the Final Class I Non-hazardous Industrial Waste Disposal Well Permit No. R9UIC-CA1-FY17-4 for injection operations at Chalk Cliff Limited, Maricopa, CA.
  • Underground Injection Control Home
  • Class I Industrial and Municipal Waste Disposal Wells
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  • Class III Injection Wells for Solution Mining
  • Class IV Shallow Hazardous and Radioactive Injection Wells
  • Class V Wells for Injection of Non-Hazardous Fluids into or Above Underground Sources of Drinking Water
  • Class VI Wells Used for Geologic Sequestration of CO2
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on June 9, 2022
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