Liquid Management System Timeline of Events


  • May 2009 - Zero Liquid Discharge Options Report completed
  • August 2010 - Phase 1 Deep Well Injection Feasibility Study completed
  • October 2010 - City Council approves Phase 2 Deep Well Injection Feasibility Study
  • March 2011 - Worley Parsons and Electric Department staff recommend drilling a test borehole to obtain geologic data at proposed well site
  • April 2011 - City Council approves test bore contract and funds
  • June 2011 - Test bore work completed and data analyzed
  • September 2011 - Electric Department staff notified Roseville City Council and Roseville Public Utilities Commission (RPUC) that findings indicate the Liquid Management System (LMS) utilizing deep well injection technology is feasible on all counts
  • June 2012 - RPUC recommends proceeding with LMS permitting process
  • July 2012 - Roseville City Council approves proceeding with LMS environmental permitting and awards Worley Parsons the contract to provide project management support


  • January 2013 – Worley Parsons provides draft EPA application to Electric Department staff for review and approval
  • February 2013 - Worley Parsons submits permit application package to the EPA
  • March 2013 - EPA provides initial feedback on application, Worley Parsons produces draft California Energy Commission (CEC) application
  • April 2013 - Worley Parsons submits permit application to the CEC and responds to initial feedback
  • May 2013 - CEC and EPA sponsored public outreach begins
  • July 2013 - Petition RPUC for recommendation and to proceed with project, and obtain Roseville City Council approval to proceed with project 
  • March 2014 - Construction begins on LMS tank, piping, and electrical
  • May 2014 - Well construction and testing begins
  • June 2014 - LMS is permitted and begins operation