Page 198 - Yucaipa Sustainable Groundwater Management Agency - Yucaipa SGMA

Michael P. Maley, PE, PG, CHG, CEG

groundwater banking, and irrigation water demand for developing local and basin‐wide water budgets for
the GSP. Working with local water districts to compile data.
GSP, Cawelo Water District, Kern County, CA
Mr. Maley is the project manager and lead hydrogeologist to develop GSP to meet SGMA requirements
to meet long‐term sustainability. He is working with District to develop the GSP following DWR guidelines.
GSP, James Irrigation District, Fresno County, CA
Mr. Maley is the project manager and lead hydrogeologist to develop GSP to meet SGMA requirements
to meet long‐term sustainability. He is working with District to develop GSP following DWR guidelines.

Palms Recharge Project, Buena Vista Water Storage District, Kern County, CA
Mr. Maley evaluated groundwater impacts to support CEQA compliance for the recharge project. He
applied a MODFLOW superposition model based on USGS CVHM to assess potential groundwater impacts
associated with recovery operations for the Palms Project to neighboring banking operations and overall
basin conditions.
Expanded Water Banking Project, North Kern Water Storage District, Kern County, CA.
Mr. Maley evaluated groundwater impacts to support CEQA compliance for a proposed groundwater
banking expansion project. He applied a MODFLOW superposition model based on USGS CVHM to assess
potential groundwater impacts associated with recharge and recovery operations.

Groundwater Recharge Feasibility Study, Palmdale Water District, CA
Mr. Maley conducted detailed hydrogeologic evaluations to evaluate potential groundwater recharge
sites along Little Rock Wash utilizing recycled and State Water Project (SWP) water. He adapted the latest
version of the USGS Antelope Valley MODFLOW model to evaluate bank operations, water quality issues,
and mounding to support the feasibility study and engineering design. Developed well spacing criteria
based on land subsidence modeling.
Groundwater Banking and Blending Study, Antelope Valley‐East Kern Water Agency, Palmdale, CA
Mr. Maley conducted detailed hydrogeologic evaluations at multiple sites in the Antelope Valley to
support feasibility studies to use groundwater banking to increase local groundwater supply. He adapted
the latest version of the USGS Antelope Valley MODFLOW model to evaluate recharge/extraction
operations, water quality issues, mounding and land subsidence to support engineering design and CEQA
evaluation of banking and blending alternatives.
Whittier Narrows Groundwater Modeling, Water Replenishment District of Southern CA
Mr. Maley used an existing FEFLOW groundwater flow model to evaluate the travel time of injected
recycled water at the Advanced Water Treatment (AWT) facility recycled water for recharge to nearby
potable supply wells to assess compliance with Division of Drinking Water recharge regulations. The model
evaluated mounding near the wells and potential discharge of recycled water to the nearby San Gabriel
River. The modeling demonstrated that adequate separation exists between injection and nearby potable
supply wells to meet the required Response Retention Time underground and that injection well
groundwater mounding was not significant, and recycled water would not discharge to the river.
Groundwater/Salt and Nutrient Management Plans, Twentynine Palms Water District, CA
Mr. Maley conducted a comprehensive study of the Mesquite Lake Groundwater Basin to evaluate
geology, water budget, groundwater recharge, and groundwater storage change. He developed a basin‐
wide MODFLOW model to evaluate shifting groundwater pumping to improve long‐term water supply. He
updated the Groundwater Management Plan with basin management objectives, a monitoring plan and
stakeholder meetings. He prepared a Salt and Nutrient Plan to assess potential groundwater quality

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