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sequencing to reduce overall field time and, in turn, minimize labor, material, and
equipment rental costs, (3) a robust, automated manifold and basin‐tree system to
maintain required flow and test basin water levels and provide real‐time alerts to project
personnel via telemetry, and (4) appropriate traffic controls and site security fencing to
ensure public safety for the duration of the project.

The proposed Todd Groundwater‐DRE team combines decades of experience in recharge
feasibility evaluation and installation and operation of field data acquisition and telemetry
systems. Our company profiles are included in the Appendix to this proposal. I am also
pleased to offer Edwin Lin as Project Manager. He is an accomplished quantitative
hydrogeologist with a specialty in MAR projects. He has recently completed similar field‐
infiltration tests for the Mojave Water Agency and Santa Clara Valley Water District. He has
carefully considered the needs of Valley District and developed an appropriate scope of
work that will ensure successful execution of the Work Plan and collection of essential data
for reliable estimation of site recharge capacity. David Drewelow, Vice President of DRE,
will construct the water conveyance and flow control systems and supervise all field
construction and monitoring activities. David has over 25 years of experience in design,
installation, and operation of environmental monitoring and remediation systems and
designed the custom manifold and basin‐tree system specified in the Work Plan. DRE is
conveniently located in Escondido, CA, a relatively short driving distance to the Yucaipa
Basin Area.

On behalf of the team, I appreciate the opportunity to assist Valley District with high‐
quality hydrogeologic and field engineering consulting. Recognizing the importance of
sustainable groundwater resources for the Yucaipa Basin Area, we would be proud to
contribute to the future expansion of your regional conjunctive use program.

Thank you,

Phyllis Stanin, PG, CHG CEG
Vice President

TODD GROUNDWATER

Yucaipa Groundwater Sustainability Agency - March 14, 2018 - Page 166 of 226