Page 188 - _ 180314 Special Yucaipa GSA Packet

January 17, 2018

Aaron Jones

Assistant Engineer
San Bernardino Valley Municipal Water District
380 East Vanderbilt Way
San Bernardino, CA 92408

Re: Proposal: Infiltration Testing Implementation for Thirteen Sites

in Yucaipa Basin Area, Yucaipa Basin Recharge Study

Dear Mr. Jones:

San Bernardino Valley Municipal Water District (Valley District) and its partner water
agencies and water retailers are taking the necessary and appropriate steps to manage
water supply conjunctively across the Yucaipa Basin Area. The successful completion of
field‐scale infiltration testing at thirteen potential recharge sites is a critical step for
developing a managed aquifer recharge (MAR) program using State Water Project (SWP)
water, local storm runoff, and recycled water supplies to satisfy basin management
objectives. Information collected from infiltration testing will allow Valley District to
prioritize potential sites, estimate long‐term groundwater banking potential, and support
concept‐level design of future recharge facilities.

Todd Groundwater, in partnership with Drewelow Remediation Equipment, Inc. (DRE), is
pleased to submit this proposal to support Valley District in implementing the field
infiltration testing Work Plan to determine the infiltration capacity of vadose zone
sediments underlying the thirteen proposed sites. Our proposed scope of work leverages
the knowledge gained from developing the Work Plan with Valley District staff, which
included in‐field assessment of site access, physical constraints, and the preferred water
source(s) for each location. Additionally, from conversations with San Bernardino County
Flood Control District (SBCFCD) staff and review of environmental permit requirements, we
are aware of the field management standards expected at each site.

Our proposal carefully considers key test implementation factors, including (1) a pre‐
construction meeting and project status meetings with Valley District and SBCFCD staff to
review and refine (if needed) testing schedules and procedures, (2) optimal test

2490 Mariner Square Loop, Suite 215 | Alameda, CA 94501 |510 747 6920 | toddgroundwater.com
Yucaipa Groundwater Sustainability Agency - March 14, 2018 - Page 165 of 226