Page 109 - Yucaipa Sustainable Groundwater Management Agency - Yucaipa SGMA

Groundwater Resources Technical Report Belden Barns Farmstead and Winery, County of Sonoma.
Prepared groundwater resources investigation for the Sonoma County Permit and Resource
Management Department to evaluate whether proposed uses on the site would have adverse
impacts regarding depletion of groundwater in storage, interference with neighboring wells,
adjacent surface water depletion, and/or groundwater quality. Researched site’s geology and
groundwater conditions, performed inventory of water wells on site and adjacent parcels,
conducted 24-hour pump test and groundwater level monitoring, evaluated water balance, well-
interference, and impacts of pumping on surface water sources.

Hexavalent Chromium Study and Municipal Water Wells Installation Project, Santa Ynez River Water
Conservation District, Santa Ynez, California. Project manager for design and implementation of a
well profiling study to evaluate the potential for naturally occurring hexavalent chromium [Cr(VI)] to
impact the water quality at Upland Basin production wells owned and operated by the Santa Ynez
River Water Conservation District. The Santa Ynez River Water Conservation District operates 12
groundwater wells in the Upland Basin located north of Santa Ynez in the Alamo Pintado Creek
Watershed. Cr(VI) concentrations exceeded the California maximum contaminant level for Cr(VI) of 10
micrograms per liter (µg/L) in half of the Upland Basin wells. The Santa Ynez River Water
Conservation District sought to identify potential discrete zones of naturally occurring Cr(VI)
concentrations that exceed the maximum contaminant level. Preliminary flow data and depth discrete
water quality samples indicated vertical variation of Cr(VI) concentrations in aquifer. Dudek used the
results of the well profiling study to develop a plan to improve the quality of water supplied by the
wells. Dudek designed an inflatable packer with Baski Inc., to selectively pump from aquifer zones
with lower Cr(VI) concentrations to reduce the wellhead concentration of Cr(VI) without wellhead
treatment. For wells that will require wellhead treatment, Dudek is working with a multi-consultant
team to evaluate potential treatment alternatives. As site geologist, supervised installation of four
municipal production wells and one monitoring well in the Upland Basin. Conducted aquifer pump
tests, logged lithology of boreholes and assisted with well design. Currently assisting the Santa Ynez
River Water Conservation District with locating and design of replacement water wells.

Hydrogeology, Engineering and Project Management Services, Jacumba Community Services District,
Jacumba Hot Springs, California. Worked in collaboration with Jacumba Community Services District
and Jacumba Solar LLC to develop Water Supply Agreement for the Jacumba Solar Farm. Project
manager for subsurface geophysical survey, well locating, design and drilling oversight of the new
Highland Center Well completed in October 2016. Implemented a groundwater level monitoring and
water quality testing program for the Jacumba Valley Groundwater Basin to evaluate pumping and
localized historical groundwater contamination from a gas station. Prepared Preliminary Engineering
Report and assisted with U.S. Department of Agriculture Rural Development grant application for
Manganese Treatment System Water Supply Wells No. 7 and 8, Photovoltaic Solar Array and Pipeline
Replacement. Successfully assisted the Jacumba Community Services District obtain a grant totaling
$1.671 million from U.S. Department of Agriculture Rural Development.

Well Screen Liner Design, Well Rehabilitation Master Planning and Groundwater Supply Drought
Planning, Goleta Water District, Goleta, California. Led team of engineers and hydrogeologists for
design and installation of unique combination Muni-Pak pre-packed screen and traditional well screen
with filter pack design to line well damaged due to casing embrittlement. Increased well yield and
eliminated sanding issues. Well liner was featured in the August 2015 issue of Water Well Journal.
Hydrogeology lead for well rehabilitation master planning of seven water wells. Conducing aquifer
testing, mechanical and chemical redevelopment, water quality sampling, and analysis of historical
water levels and production. Optimizing pump intake depth, and pump and motor sizing to allow for
sustained production from basin during drought.

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