Page 15 - Yucaipa Valley Water District

Director Memorandum 19-057

Date: June 4, 2019

Prepared By: Joseph Zoba, General Manger

Subject: Amendment No. 1 to Recharge Testing to Evaluate the Long-Term
Infiltration Rates in the Western Portion of the Beaumont Basin - Calimesa
Lake and Spreading Basin

Recommendation: That the Board authorize the General Manager to execute a contract for
Amendment No. 1 with Geoscience for a sum not to exceed $101,464.

Like most water agencies in the arid southwest, the
Yucaipa Valley Water District is confronted with
increased drinking water demands due to the increased
population and limited local water supplies. The Yucaipa
Valley Water District is somewhat unique given the strict
regulatory requirements that necessitate desalination of
recycled water supplies to protect local groundwater
basins pursuant to the 2004 Regional Water Quality
Control Basin Plan for the Santa Ana Region.

To address a wide range of regional issues, the District
has developed the Yucaipa Valley Regional Water
Supply Renewal Project to accomplish the following
objectives:

REGIONAL BENEFITS:
 Provide the Yucaipa Valley with a renewable
water resource that will be a reliable water supply
in the upper Santa Ana Watershed.
 Protect and enhance the regional groundwater quality by exporting concentrated salt brine
that would normally accumulate in the groundwater supplies impacting future uses.
 Reduce the critical overdraft of the Yucaipa, Beaumont, and San Timoteo basins by
augmenting the historic freshwater production from the local groundwater supplies.
 Encourage economic and environmental growth of the region by balancing water
demands.

WATERSHED BENEFITS:
 Equip the Wochholz Regional Water Recycling Facility with advanced treatment including
reverse osmosis to achieve an advanced, pure, and renewable water resource.
 Protect water quality in the Santa Ana Watershed by maintaining high quality water in the
upper watershed as the water of the upper basins eventually flows to the downstream
basins.

Yucaipa Valley Water District - June 4, 2019 - Page 15 of 237