Reuse Facility: Rapid Infiltration System

01. Criteria. Plans and specifications submitted to the Department for review and approval must demonstrate compliance with the following design criteria: (4-6-23) a. Design the system to allow complete infiltration of recycled water into the soil followed by subsurface soil percolation where applied recycled water is transmitted down and away from the infiltration basins, without excessive mounding; (4-6-23) IDAHO ADMINISTRATIVE CODE IDAPA 58.01.17 Department of Environmental Quality Recycled Water Rules Section 607 Page 20 b. Ensure the system consists of either two (2) or more cells that can be alternately loaded and rested, or one (1) cell preceded by an effluent storage or stabilization pond system. Where only one (1) cell is provided, ensure the storage and stabilization pond(s) have sufficient capacity to allow intermittent loading of the rapid infiltration systems; (4-6-23) c. Design the rapid infiltration system to provide even distribution of the recycled water and prevent erosion; and (4-6-23) d. Design the system to ensure proper operation during cold weather conditions. (4-6-23) 02. Requirements. Loading to a rapid infiltration system may not exceed the hydraulic, organic, nitrogen, suspended solids, or other limits specified in the permit or plans and specifications developed pursuant to a permit requirement. The Department will consider past operating performance, ability of the soils to treat the pollutants in the recycled water, hydrogeologic characteristics of the site such as permeability and infiltration rates, and other relevant information when determining discharge limitations. (4-6-23)