− | Infiltration chambers are an ideal technology for installing below any type of surface or landscape suitable for receiving and infiltrating large volumes of stormwater. Components typically include proprietary chamber system parts that provide large water storage volume per unit area, [[Reservoir aggregate| clear stone aggregate]] to construct base and embed chambers, [[Geotextile| geotextile]], [[Pretreatment| pretreatment devices]], and structures to access inlets, outlets, pretreatment devices and the chambers themselves for operation and maintenance. <br> | + | Infiltration chambers are an ideal technology for installing below any type of surface or landscape suitable for receiving and infiltrating large volumes of stormwater. Components typically include proprietary chamber system parts that provide large water storage volume per unit area, [[Reservoir aggregate| clear stone aggregate]] to construct base and embed chambers, [[Geotextile| geotextile]], [[Pretreatment| pretreatment devices]], and structures to access inlets, outlets, pretreatment devices and the chambers themselves for operation and maintenance. Optional components include a flow restrictor to control the release rate of the facility, and surface drains to safely convey flows in excess of the storage capacity of the design.<br> |
| Design and operation and maintenance program assumptions used to generate cost estimates are based on tool default values and the following STEP recommendations: | | Design and operation and maintenance program assumptions used to generate cost estimates are based on tool default values and the following STEP recommendations: |