Summary of the scaling equations describing the risk of intrusion.

The intruded volume is predicted to scale by the ratio listed in the table when the system’s: supply duration (t), pressure head (H), or EOA (A) is changed from a baseline (0) to an improved state (*). Each column assumes that some intruded volume is present in the baseline scenario (i.e., ).当系统的供水时长（t）、压头（H）或EOA（A）从基准状态（0）调整至优化状态（*）时，侵入体积预计将按照表格所列比例进行缩放。各表格列均假设基准工况下已存在一定量的侵入体积（即）。