Planning level Infiltration Potential - NOT FOR ENGINEERING DESIGN. A starting point to determine if a Seattle modified PIT test should be considered for a site under development that is considering infiltration using green stormwater infrastructure or low impact development techniques. See PIT test information in the 2009 Stormwater Directors' Rule - Volume 3: Stormwater Flow Control and Water Quality Treatment Appendix E: City of Seattle Modified Procedure for Conducting a Pilot Infiltration Test. 

Uses data from UTIL.UW_INFILTRATION, symbolized based on PERMEABILITY field.