2. Development of BMP Cost-Effectiveness Values
We have used BMP cost data specific to the Tar-Pamlico basin.
We have accounted for operation and maintenance costs and the SCS life
expectancy of
evaluated effectiveness and cost-effectiveness relative to typical
preexisting practices.
Equations for Calculating.Cost-Effectiveness
2.2.3.1
The following equation was used to estimate yearly per-hectare cost for a
practice:
$ Farmer $
+ Yearly Operation and Maintenance
Life Expectancy
cost
Hectares Benefitted
hectare- year
The sources for the parameters in the above equation are discussed in Section
2.2.1.
Cost-effectiveness values presented in this report are calculated according to one
of two equations. If effectiveness values were reported in terms of kilograms
reduced per hectare-year, then the following equation is used:
reduced
kilogram reduced hectare-year
hectare- year
The effectiveness of certain in-field practices (e.g., vegetated filter strips) are
reported as percent reductions. In these cases, it was necessary to convert the
percentages to an estimated load reduction. This process, discussed in Section
2.2.2, uses the following
hectare- year
kilogram reduced
percent reduction x range of loading factors
Previous Page
