3.9.3 UNDERGROUND STORAGE CHAMBERS

Underground storage chambers are typically designed to store larger volumes of water and are often used for quantity control. Underground storage chambers have large void spaces and typically have open bottoms allowing the system to infiltrate into the surrounding soils. VO offers generic LID options with standard default parameters and automatically calculates how much storage is required and provided. Certain brand LID manufacturers have also been listed with their unit design specifications. Underground storage chambers are designed with an overflow, an outflow, and an optional sub-drain feature. The diagram below shows key features of the underground storage chamber designs.