Abstract
Fifteen highway sites in eastern North Carolina were evaluated for anticipated bottomland hardwood wetland losses resulting from roadway construction. Wetland takings were expressed in acres of HEP (habitat evaluation procedures) units for comparative purposes. Debits were withdrawn from the North Carolina Department of Transportation's (NCDOT's) Company Swamp mitigation bank. Acre-for-acre transactions were found to provide only one third of the functional value replacement when compared to HEP unit debiting. In addition, an analysis of accrued habitat unit values for the 15 sites over the 90-year study period revealed negligible differences. Study findings demonstrated that similar systems evaluated under similar circumstances over similar periods of time may result in similar accrued HEP values.
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