512.40(a) 



construction limits, 

 effectiveness, and 

 contractors. 



Part 512 - Wetland Conservation 



i. Use of notes in case files, 



ii. Field borings to define original 



iii. Aerial photos to verify location and 



iv. Data provided by landowners or 



V. Field surveys 



vi. Depth of ponding in potholes or playas. 



(b) Documented prior drainage facilities may or may not meet SCS 

 standards and specification criteria, but in either case the person 

 may reconstruct or maintain the original system. However, a 

 redesigned system is appropriate only as long as it is within the 

 sccppe and effect of the original system. If the person would rather 

 reinstall a more permanent or lower-maintenance-cost system in line 

 with present farming operations, a modified proposal can be designed. 



(c) Maintenance only or reconstruction having the saune scope and 

 effect as original drainage activities is appropriate for third party 

 drainage. 



(d) A person may maintain, improve, replace, or install new 

 drainage systems on prior converted croplands (PC) and artificial 

 wetlands (AW), including irrigation-induced wetlands, because prior 

 converted croplands and artificial wetlands are not subject to the 

 wetland provisions of the FSA. Drainage facilities may be installed 

 on commenced conversion (CC) or minimal effect (MW) areas as may be 

 stipulated on a site-specific basis. 



(e) Abandonment applies to the land area involved and not to the 

 drainage or other system that caused the prior conversion. Therefore, 

 drainage systems can be reinstalled or maintained to the original 

 extent and scope as installed prior to the FSA, providing the land 

 area has not been abandoned. 



(f) Maintenance of the removal of woody vegetation is allowed to 

 the condition prior to December 23, 1985. 



512-60 



(180-V-NFSAM, Second Ed., Amend. 6, May 1991) 



