Page 240 - _ 180314 Special Yucaipa GSA Packet

Dennis Williams, PhD, PG, CHG
Technical Advisor
Years of Experience: 45+
Years with GEOSCIENCE: 39
Education:
BS, Geology, University of Redlands
MS, Groundwater Hydrology, New Mexico
Institute of Mining and Technology
PHD, Hydrology, New Mexico Institute of
Mining and Technology
Professional Registrations:
California Professional Geologist (No. 461)
Certified California Hydrogeologist
(No. 139)
Certified Groundwater Hydrogeologist
(American Institute of Hydrogeology,
No. 355)
What Dennis brings to the project...
• Worldwide reputation in well design—provide
new ideas and perspectives
• Experience with all injection well barriers in
Southern California—help identify solutions
• Experienced Technical problem solver—help
maximize well performance
• Daily interaction with staff on well projects—
help keep project schedule and budget on-track
50+
Dennis has authored more than
50 publications
45+
Years of experience supporting
groundwater modeling and
well design
Yucaipa Groundwater Sustainability Agency - March 14, 2018 - Page 212 of 226
Dennis Williams, is the founder and president of
GEOSCIENCE. He has 47 years of experience in ground water
hydrology and has directed more than 2,000 hydrogeologic
investigations and groundwater models, and overseen
design and construction for more than 1,000 deep large-
scale water supply wells. Dennis has been a consultant to
the United Nations and several foreign governments, is a
research professor at the University of Southern California’s
Civil and Environmental Engineering Department, and
has taught graduate level courses in hydrogeology and
ground water modeling since 1980. He has authored more
than 50 publications on ground water and wells and was
the principal author of the Handbook of Ground Water
Development (John Wiley & Sons, 1990), chief reviewer for
the American Society of Civil Engineers (ASCE) Hydraulics
of Wells (2014), and author of Ch 13 (Slant Wells) in the
book Intakes and Outfalls for SWRO Desalination Facilities
(Springer 2015).
Dennis has been on the forefront of groundwater
sustainability for the past 47 years and has helped
develop some of the methods and studies used to
determine sustainable yield and water budgets. His depth
of experience will help our team identify and address
key issues in the final GSP to provide the county and
stakeholders within the San Luis Rey Valley a clear road-map
to sustainably manage groundwater resources.
Selected Project Experience
San Bernardino Valley Municipal Water District: Santa Ana
River Integrated Model
Dennis is providing executive oversight to our team in an
effort to use existing groundwater and surface water models
to develop an integrated watershed model for the upper
Santa Ana River. The resulting Upper SAR Integrated Model
(or Integrated SAR Model), will be used to determine what
factors may contribute to declines SAR flows, and assess
cumulative effects on SAR surface flows and groundwater
levels. This is a multi-agency effort and includes Riverside
Public Utilities and surrounding water districts.
San Bernardino Valley Municipal Water District: Bunker Hill
Basin Conjunctive Use Project
Dennis was the Principal-in-Charge for an evaluation to
determine optimal extraction well locations and evaluate
proposed spreading grounds. Our team determined
locations, and potential well capacities.
Yucaipa Valley Water District: Recycled Water Use
Evaluation using the Gateway Sub-basin Focused
Groundwater Model
Dennis served as the Principal-in-Charge for the
construction of a groundwater model used to predict the
impacts of recycled water spreading on groundwater quality
and to downstream municipal wells.