Page 70 - Yucaipa Sustainable Groundwater Management Agency - Yucaipa SGMA

Los Angeles County: Raymond Basin Ground Water Flow Model - Leo performed a regression analysis
on Arroyo Seco spreading based on annual and monthly flow data from City of Pasadena, Devils’ Gate
Dam, and precipitation.
Castaic Lake Water Agency: Santa Clara River Valley East Sub-basin Salt and Nutrient Management
Plan - Leo developed and calibrated for the salt loading model for the period from 2001 to 2011. He
provided assistant with determining surface water, groundwater and salt balance and incorporating
proposed mitigation projects for the salt and nutrient management plant. Leo then ran predictive model
runs for the period of 2012 through 2035, and analyzed modeling results under No Project, Single
Project and, All Project conditions.
Western Municipal Water District: TDS and Nitrate Lumped-Parameter Model for the Riverside and
Arlington Groundwater Basins - Leo updated Groundwater Flow Model input packages to incorporate
recharge and discharge components (i.e., flux terms) measured during the period from January 1965
through December 2007. He developed a lumped-parameter model for the period from 1965 to 2007
and calibrated through varying the anthropogenic return flow mass loading and initial TDS and nitrate
concentration. Leo then developed and ran predictive model runs for the period of 2015 through 2034
under four different scenarios.

Yucaipa Sustainable Groundwater Management Agency - August 9, 2018 - Page 69 of 208