Meet Gei's

Rodney Fricke, PG, CHg, CEG

Senior Hydrogeologist

Rodney is a California-Certified Hydrogeologist and Professional Geologist specializing in the evaluation of groundwater resources and groundwater remediation. Over the course of his career, he has worked as a consultant and was a client who hired groundwater experts. His early career focused on evaluation and development of groundwater resources for potable water supply and for the mining industry and then groundwater contamination. More recently, he has focused on water supply and the management of groundwater resources, including aquifer storage and recovery (ASR) pilot tests and compliance with regulations of the Sustainable Groundwater Management Act (SGMA). Rodney has worked with state and federal regulatory agencies in achieving compliance in soil and groundwater cleanup projects, evaluating alternative water supplies for impacts to municipal resources and delisting/entitlement processes for land development. His experience also includes the design and implementation of groundwater monitoring plans and field investigations of soil and groundwater, interpretation of geophysical logs for well design and aquifer characterization, aquifer testing, development of site-specific conceptual hydrogeologic models, and interpretation of water quality data.

Rodney has a MS in Geology from the University of Nevada-Reno and a BS in Geology from Southern Illinois University-Carbondale.

… pleasure working with you over the past 20+ years. You are a professional and I always trusted you in telling the truth.
- Alex MacDonald, Senior Engineer, California Regional Water Quality Control Board

Sacramento, California


  • Licensed Professional Geologist: CA
  • Certified Hydrogeologist: CA
  • Treasurer for of the Groundwater Resources Association (GRA) of California and for the Sacramento Branch
  • Editor of the GRA HydroVisions, a quarterly on-line publication