Proximity Factor Tool – Out of Basin Compensatory Mitigation
The proximity factor tool is utilized to determine the amount of compensatory mitigation required to offset unavoidable impacts to waters of the United States in areas outside the impact 8-digit Hydrologic Unit Code (HUC), ecoregion, or approved mitigation bank and in-lieu fee service areas, etc.
The use of an out-of-basin mitigation bank may be considered if there are no federal credits available within the basin/HUC.
A mitigation bank’s MBI must contain language that states they may be used to offset impacts outside their service area on a case-by-case basis.
In 2017, the MBI template language changed, and the newer banks do not have this “out of basin” language.
;
