2.3 Mitigation Measures of Alternative B: Harvest 



2.3.1 Watershed and Soil Related Mitigation 

 Recommendations 



• Operations conducted in or near draw features and on steeper slopes have a 

 higher risk of impacting soil resources and water quality. The following 

 recommended mitigation measures would help minimize risk of impacts 

 during the proposed activities. These mitigation measures are standard 

 practices that may be applied to all harvest activities associated with the 

 proposed harvest. 



2.3.2 General Road Design Mitigation Recommendations 



• Plan, design and improve existing road systems to meet long-term access 

 needs and to fully comply with current BMPs. 



• Construct drain dips, roll grades and construct other drainage features where 

 necessary and practical to insure adequate road surface drainage. Install and 

 maintain all road surface drainage concurrent with harvest activities, 

 reconstruction, and reconditioning. Drain dips constructed on sustained road 

 grades greater than 8% may require gravel surfacing to function properly. 

 Sustained road grades greater than 10% may require installation of water 

 diverters. 



• Grass seed newly constructed or reconstructed road cut and fills immediately 

 after excavation. 



• Leave temporary or abandoned roads in a condition that would provide 

 adequate drainage and would not require future maintenance. Partially 

 obliterate roads that are abandoned through ripping and seeding. Scatter slash, 

 where it is available, across the ripped road surface. Install water bars at 

 regular intervals to facilitate surface drainage. 



• Construct additional drainage features on all approaches to draw and stream 

 crossings to avoid concentrating runoff at crossing sites. Locate drainage 

 features close enough to the crossing to minimize the size of the area 

 contributing runoff, but at an adequate distance away from the crossing to 

 provide for effective sediment filtering. 



• Filter ditches with direct delivery to streams or ephemeral draws at the outlet 

 by using slash or filter fabric and straw bales. 



• Incorporate slash filter windrows at all draw and stream crossings requiring 

 fills that are more than 2 feet deep. 



Deadman Gulch Timber Sale Environmental Assessment 2-6 



