2. Development of BMP Cost-Effectiveness Value:
Table 2-19. Effectiveness Estimates for Terracing
Using the cost and effectiveness data presented in Tables 2-l 8 and 2-19,
effectiveness values were estimated for terracing (with winter cover) in the
Pamiico basin (Figure 2-4). Casman's percent reduction figures were converted
to load reductions using conventional
loading factors from the Chesapeake
Bay Model for ecoregions 63 arid.65
Figure 2-4. Terracing cost-effectiveness
Phosphorus
60
63..
65
2.3.7
Vegetated Filter Strips
Field Borders
Stripcropping
Vegetated filter strips
are bands of vegetation placed between pollutant
source areas and receiving waters to remove suspended sediments and other
pollutants from surface runoff. The major mechanisms for nutrient removal in
are (1) plant uptake and (2) soil adsorption /binding. The filter strip decreases flow
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