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7. Use the steepest slopes possible on cut and fill slopes commensurate 

 with the strength of the soil and bedrock material as established 



by an engineering geologist or other specialist in soil mechanics. 

 Benching cut slopes in areas of weak or erodible bedrock (e.g. 

 weathered granites) into a series of properly drained terraces 

 provides opportunity for vegetation establishment and may even 

 require less excavation. 



8. Deposit excess material in stable locations well above the high 

 water level and never into any stream channel. Do not allow any 

 material, including sidecast soil, stumps, logs or other material 

 to be deposited into a stream. 



9. When building across slump areas, do not dispose excess material 

 on the slump, as added weight may cause further slumping. 



10. Desigh fill at an angle less than the normal angle of repose. 



11. A thorough job of clearing is required to insure proper 

 construction of fills. Overcasting onto brush and timber 

 or incorporating brush and timber into the fill material can 

 lead to serious surface and mass erosion problems. In addition, 

 provide a good base for fills and assure proper compaction as fills 

 are constructed. 



12. Where possible, the cleared vegetation should be spread evenly over 

 the soil surface beneath the toe of the road fill. The vegetation 

 material should be cut up or somehow crushed into the surface to 

 assure close contact with the soil. This practice should enhance 

 the buffering qualities of the slope beneath the road. ■ 



13. Do not permit earth moving activities when soils are saturated. 

 Disturb roadside vegetation only the necessary width to maintain 

 slope stability and serve traffic needs. 



