This document describes a discrete event simulation model of transuranic waste production and storage at Los Alamos National Laboratory. It lists different types of transuranic waste, storage areas, and assumptions used in the model. The model was built in ExtendSim software with a Microsoft Excel interface to allow users to easily change variables and scenarios. The model can be used to understand how changes to variables like damage ratios, storage capacities, and waste generation rates may impact when storage space is exceeded.