After having defined the species The chemical (or non-chemical, such as bacterial or viral) constituents that are stored and transported through an environmental system in a contaminant transport model. In GoldSim, the Species element defines all of the contaminant species being simulated (and their properties). and media Materials (such as water, sand, clay, air) that constitute (are contained within) transport pathways. GoldSim provides two types of elements for defining media: Fluids and Solids., you can start to build the network of transport pathways through which the species will be transported.
Because there are a variety of transport pathways that you
may wish to simulate, GoldSim provides five different pathway elements that you
can use interchangeably to build a pathway network. The two most commonly
used pathway elements are discussed briefly in the