Summary of Brenda SEZ Model Files and Future Use Modeling was performed using GMS version 9.0 (64-bit) with a build date of March 25, 2013. The files are packaged in several zip files. When unzipped, they may be usable by older or newer versions of GMS or by other commercial graphical user interfaces; however, functionality cannot be guaranteed. Within GMS, the project explorer includes MODFLOW-related items under the 3D Grid Data. For the Brenda work, the solution file sets include the following: • brendav9-2013-0516a is the pre-development, steady-state model with parameter estimation for K and recharge. • brendav9-2013-0517a is the transient model including agricultural development pumping, consisting of an initial steady-state model of pre-development conditions, followed by approximate agricultural pumping for 40 years. • brendav9-2013-0517b is the model of the effect of high-demand SEZ pumping. It includes an initial steady-state stress period of pre-development conditions, a 20-year transient period of agricultural development, and a 20-year period of agricultural pumping and high-demand SEZ pumping. • difference at 40yr is a data set within brendav9-2013-0517b created using the GMS Data Set Calculator tool to determine the difference in drawdown between the 0517b results at the 40-year mark (20 years agricultural plus high-demand SEZ pumping) and 0517a results at the 40-year mark (40 years of agricultural pumping). • Images is a folder containing visual information called for when each GMS file is opened.