Phyllis Stanin

Vice President and Principal Geologist

Photo of Phyllis


Ms. Stanin has been a professional geologist for 30 years with expertise in hydrogeology and groundwater basin management. She became Principal Geologist and Vice President with Todd Groundwater in 2002. Phyllis has consulted on numerous projects involving regional hydrogeologic assessments with emphasis on sustainable groundwater management, managed aquifer recharge, and conjunctive use.

Prior to passage of the Sustainable Groundwater Management Act (SGMA) of 2014, Ms. Stanin had successfully completed several groundwater management plans. She has been deeply involved in assisting local agencies with SGMA compliance, including preparation of a successful Alternative Plan for Livermore Valley, formation of Groundwater Sustainability Agencies (GSAs), basin boundary modifications, and successful applications for grant funding to support GSP preparation. She has been actively involved in GSP preparation for GSAs in the Central Valley, including provision of basin-wide modeling. She also is serving as the Watermaster Engineer for the Antelope Valley Watermaster and has provided key technical guidance to establishment of rules, regulations, and procedures. She has also managed water resource monitoring, tracking of groundwater production, well permitting, documentation of groundwater quality, and annual reporting for the Watermaster.

Ms. Stanin has recognized expertise in managed aquifer recharge involving numerous recharge methods (spreading basins, canals, vadose zone wells, and injection wells) and recharge water sources (e.g., recycled water, imported water). She has served as project manager and principal in charge for the Pure Water Monterey project involving IPR — indirect potable recharge — with vadose zone and injection wells. She is versed in the California Recycled Water Policy and has led the preparation of Salt and Nutrient Management Plans.

Phyllis also has significant experience in groundwater development including hydrogeologic characterization, well siting and design, geophysical logs, and field testing programs. Her expertise includes fate and transport of contaminants in groundwater including emerging compounds; she has served as expert witness or a court-appointed consultant on seven cases involving alleged groundwater contamination.

Professional Credentials and Academic Background:

Professional Geologist California, No. 5311
Certified Engineering Geologist California, No. 1899
Certified Hydrogeologist California, No. 482
Registered Geologist Arizona, No. 45605

MS, Environmental Management, Hydrogeology thesis, University of San Francisco, 1999
BS, Geology, University of North Carolina, 1978