Page 185 - Yucaipa Sustainable Groundwater Management Agency - Yucaipa SGMA

Edwin H. Lin, PG, CHG
Principal Hydrogeologist

EDUCATION

MS, Groundwater Hydrology, Flinders University (Australia), 2006
BS, Geological and Environmental Sciences, Stanford University, 1998

REGISTRATIONS

Professional Geologist California, No. 8312
Certified Hydrogeologist California, No. 907

PROFESSIONAL SUMMARY

Mr. Lin has 20 years of experience in groundwater basin management, including managed
aquifer recharge (MAR) evaluations, hydrogeologic conceptual model development, and
water supply and demand analysis. Mr. Lin has published papers on well clogging mechanisms
and pre‐treatment options for Aquifer Storage and Recovery (ASR) in cooperation with the
Australian Commonwealth Scientific and Industrial Research Organisation. Mr. Lin has also
been responsible for the design and construction of municipal water supply and monitoring
wells using a variety of drilling methods, and analysis of aquifer pumping tests. He is skilled in
Geographical Information Systems (GIS), database development, geochemical analyses, and
application of advanced environmental statistics. A few recent projects are described below
demonstrating Mr. Lin’s expertise with emphasis on MAR projects.
Mojave Salt and Nutrient Management Plan, Mojave Water Agency
As project hydrogeologist, Mr. Lin developed a Salt and Nutrient Management Plan (SNMP)
for the Mojave Region Integrated Regional Water Management (IRWM) plan area, which
2
includes 36 groundwater basins covering a 16,000‐mi area. His responsibilities included
compiling and managing an extensive data set including data from more than 1,000
monitoring and production wells, characterizing total dissolved solids and nitrate distribution,
and documented current and potential salt and nutrient (S/N) loading sources. Mr. Lin
completed an assimilative capacity analysis that involved the evaluation of S/N loading
sources for 22 analysis subregions using a dynamic water quality mixing model combining
existing USGS MODFLOW model outputs with S/N estimates. He also was responsible for an
anti‐degradation analysis, development of a monitoring and reporting plan, and preparation
of the SNMP. The SNMP process was folded into the MWA IRWM process, and as such, Mr.
Lin was responsible for communicating project status and key findings at IRWM technical
advisory committee (TAC) meetings, and also coordinated with two Regional Water Quality
Control Boards (RWCBs) to ensure plan compliance. The SNMP revealed that recharge of State
Water Project water improves and/or stabilizes groundwater quality with respect to S/Ns, and

2490 Mariner Square Loop, Suite 215 | Alameda, CA 94501 | 510 747 6920 | toddgroundwater.com
Yucaipa Sustainable Groundwater Management Agency - August 9, 2018 - Page 182 of 208