• 



Rock armor both the inlet and outlet of all CMP installations. Install energy 

 dissipaters at outfall of all CMP installations. Rock used for armoring should 

 average 12 inches in diameter and not less than 6 inches in diameter. 



When excavating material in and around stream and draw crossings (i.e. 

 installing new CMPs, cleaning inlets and outlets, constructing ditches, etc.) 

 take special care so as not to cause an excessive amount of disturbance to the 

 stream channel or area immediately adjacent to the crossing site. Dispose of 

 excess or waste material at a location where it would not erode directly into 

 the stream or draw bottom. 



Limit road use and hauling to dry, frozen or snow covered conditions. 

 Suspend operations when these conditions are not met before rutting occurs. 



Where feasible, rip, seed, water bar and slash any non-system roads within the 

 sale area concurrent with construction activities. 



2.3.3 Site-Specific Design and Mitigation Recommendations 



• Following harvest activities, install water bars above and below the draw 

 crossing on Middle Spur Road. 



• For new road construction on side slopes greater than 55%, construct % bench 

 road segments. Round off the cutslope edge (top) to 1: 1 and construct the 

 main cutslope (lower) to help prevent slumping and subsequent erosion. 



• Some locations within the sale area (particularly the E V2 of Section 16 and the 

 W V2 of Section 15) contain slopes greater than 45% (as noted on map). Do 

 not ground skid these areas with tracked equipment. Where these steeper 

 slopes occur in larger areas, designate with clearly marked equipment 

 restriction zones (ERZs) and use winch lines to pull the wood either up or 

 down the slope. 



2.3.4 Harvest Unit General Design Mitigation 

 Recommendations 



• Implement Forestry Best Management Practices (BMPs) as the minimum 

 standard for all operations with the proposed timber sale. 



• Protect all ephemeral draws, springs and wet areas with marked ERZs. If 

 absolutely necessary, designate locations for skid trail crossings. Minimize 

 number of crossings and space 200 feet apart where feasible. This should 

 minimize soil disturbance within the vicinity of the draws. Use designated 

 crossings only under dry or frozen conditions. 



Deadman Gulch Timber Sale Environmental Assessment 2-7 



