Edwin H. Lin

Principal Hydrogeologist

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Expertise:

Mr. Lin has over 20 years of experience in groundwater basin management, including groundwater supply exploration and development and basin conceptual model refinement. He has a specialty in managed aquifer recharge projects including evaluation of technical feasibility, water level/quality impacts, and regulatory compliance of projects involving local stormwater, imported water, and recycled water. Mr. Lin has expertise on physical clogging mechanisms and pre-treatment options prior to Aquifer Storage and Recovery and has published papers in cooperation with the Australian Commonwealth Scientific and Industrial Research Organization (CSIRO) on these topics. Mr. Lin also has extensive experience in construction of municipal water supply and monitoring wells using a variety of drilling methods and in design and implementation of aquifer pumping and injection tests. He is skilled in Geographical Information Systems (GIS) database development and spatial analysis, groundwater flow and vadose zone modeling, geochemical analysis techniques, and application of advanced environmental statistics.

Major projects for which Edwin has held key responsibilities include the Pure Water Monterey Groundwater Replenishment Project that involves recharge of recycled water through deep injection and shallow vadose zone wells. Mr. Lin has been responsible for management of two injection wellfield construction programs and preparation of hydrogeologic sections of documents to satisfy recycled water recharge regulations. Edwin has also managed a multi-year on-call hydrogeological services contract with the Coachella Valley Water District. Projects have included municipal production well design and well rehabilitation services, technical evaluations of proposed and existing groundwater replenishment projects. Mr. Lin also completed a multi-year hydrogeologic study for the Mojave Water Agency that illuminated relationships between groundwater production and discharge and recharge along the Mojave River.

Edwin has also completed several salt/nutrient management plans in accordance with the SWRCB Recycled Water Policy that included stakeholder participation, basin characterization, salt loading analysis and calibration, development of a monitoring plan and implementation measures, and definition of goals and objectives.

Academic Background and Professional Credentials:

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

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