Step 7 - Tracking IC reduction/disconnection
If you’ve done a good job mapping and characterizing your IC in Steps 1 and 2, keeping track should be relatively easy. As implementation projects proceed at the site level, the overall area of IC removed or disconnected can be tracked. Remember also that any impervious cover added by new development must be added to your tally—this is a major incentive to have your land use process encourage LID for both new development and redevelopment, with a goal of minimizing or eliminating the addition of any connected IC.
Here’s a simple spreadsheet we developed as an example.