Page 204 - Yucaipa Sustainable Groundwater Management Agency - Yucaipa SGMA

Chad N. Taylor, PG, CHG

tool that can be used by local parties to evaluate the impacts of banking on other water users
in the area.
Feasibility Study for Recycled Water Recharge, Temescal Valley Water District (formerly Lee
Lake Water District)
Mr. Taylor assembled available data for a little studied subbasin of the Elsinore Groundwater
Basin, the Bedford Subbasin, and synthesized a hydrogeologic conceptual model. This
conceptual model was used to evaluate the potential for recharge of recycled water in the
subbasin. The entire 6.5 square mile subbasin was evaluated to locate the most appropriate
areas for the application of recharge water. These areas were then independently evaluated
using analytical modeling techniques to simulate the effects of recharge upon local and
regional groundwater elevations. The study concluded that there is adequate unsaturated
aquifer capacity to allow for the managed application of recycled recharge water at the
selected locations.
Managed Aquifer Recharge and Pumping Feasibility Study, City of Palo Alto, CA
Mr. Taylor is currently the project hydrogeologist for hydrogeologic studies portions of a
Recycled Water Strategic Plan assessing the potential for managed recharge of recycled water
in the City of Palo Alto. The study includes a complete reevaluation of the basin hydrogeologic
conceptual model, refinement of a numerical modeling tool, assessment of increased
groundwater extraction and recycled water recharge via spreading basins and injection wells,
and a recharge feasibility evaluation.
Groundwater Monitoring for Water Recycling, City of Hollister
Mr. Taylor served as project manager for the design and construction of the City of Hollister's
recycled water irrigation groundwater monitoring network. As part of the California
Environmental Quality Act (CEQA) documentation and requirements by the Central Coast
Regional Water Quality Control Board (CCRWQCB), the City was required to install monitoring
wells at each site where recycled water will be used for irrigation. Mr. Taylor evaluated the
hydrogeology of each site through a thorough review of construction and testing information
from existing wells and published hydrogeologic conditions, then identified monitoring well
locations for each site. Mr. Taylor prepared detailed specifications for the drilling and
construction of the monitoring well network and oversaw the drilling and construction of the
wells. Several of the locations include nested wells for depth‐discrete monitoring of near‐
surface groundwater and the shallow aquifer.
Managed Aquifer Recharge (MAR) Feasibility Study, Turlock Irrigation District, Stanislaus and
Merced Counties, CA
Mr. Taylor was one of the project hydrogeologists on the team that developed a regional
evaluation of recharge methods, strategies, and favorable areas for enhancing recharge in the
Turlock Subbasin. Recharge feasibility was assessed by mapping and evaluating soils
(including vertical hydraulic conductivity), restrictive barriers (including hardpan and lithic
soils), and depth to groundwater. This information was developed into spatial datasets in a
Geographic Information System (GIS) database, which allowed identification of target areas
for various managed aquifer recharge (MAR) strategies. Four strategies for conceptual
projects were identified including centralized infiltration basins, de‐centralized
trenches/canals, in‐stream recharge in natural drainages, and urban stormwater recharge.

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Yucaipa Sustainable Groundwater Management Agency - August 9, 2018 - Page 201 of 208