more parameters, the entire area is a nonwetland. If only a portion of 

 the area presently or normally has wetland indicators for all three 

 parameters, PROCEED TO STEP 17. 



• STEP 17 - Determine Wetland-Nonwetland Boundary. Mark each plant 

 community type on the base map with a W if wetland or an N if nonwet- 

 land. Combine all wetland plant communities into one mapping unit and 

 all nonwetland plant communities into another mapping unit. The 

 wetland-nonwetland boundary will be represented by the interface of 

 these two mapping units. 



Areas Greater Than 5 Acres in Size 



• STEP 18 - Establish a Baseline. Select one project boundary as a 

 baseline. The baseline should parallel the major watercourse through 

 the area or should be perpendicular to the hydrologic gradient (Fig- 

 ure 15) . Determine the approximate baseline length. PROCEED TO 

 STEP 19. 



• STEP 19 - Determine the Required Number and Position of Transects. 

 Use the following to determine the required number and position of 

 transects (specific site conditions may necessitate changes in 

 intervals) : 



Baseline length, miles 



^0.25 

 >0. 25-0. 50 

 >0. 50-0. 75 

 >0. 75-1. 00 

 >1. 00-2. 00 

 >2.00-A.00 



>4.00 



* Transect intervals should not exceed 0.5 mile. 



Divide the baseline length by the number of required transects. Estab- 

 lish one transect in each resulting baseline increment. Use the 



63 



