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Silvicultural activities should be modified to reflect the limitations 

 and hazards of the specific site, as well as the entire watershed. Such 

 modifications may include changes in location and construction of road 

 systems, harvesting technique, size and location of cutting units, timing 

 of activity, and subsequent land use. In cases where severe impacts to 

 water quality are anticipated (or already exist), silvicultural activities 

 may necessarily be completely avoided. 



D. Changes In Silvicultural Practices 



Changes in silvicultural practices that could lead to additional water 



quality problems without proper controls include: 



1. Using harvesting, road construction, slash treatment or other 

 methods that create more soil disturbance. 



2. Harvesting areas where volumes/acre are low (for example, to harvest 

 1 million board feet in an area averaging 50,000 board feet/acre would 

 involve 20 acres; to harvest 1 million board feet in an area averaging 

 10,000 board feet/acre would involve 100 acres - generally sites with 

 lower volumes per acre are harder and slower to revegetate). In some 

 cases, however, more productive sites have greater potential for problems 

 because of higher annual precipitation. 



3. Practices in critical areas. 



4. Intensifying management to include large scale applications of 

 herbicides, pesticides, and fertilizers, 



5. Failing to revegetate areas (this is especially critical in some 

 private lands where landowners sell their timber without provisions for 

 revegetation). 



