Surface disturbance. 



U-7P Seismic activities shall be conducted in such a manner as to 



create a minimum disruption of soil horizons and, unless other- 

 wise specifically authorized by the land manager, all such soil 

 disturbances shall be confined within the seismic easement. 



Vehicle movement. 



LI-3P Unless otherwise specifically authorized by the land manager, 

 all vehicular activity shall be confined within the boundaries 

 of the staked seismic easement. 



U-6P Entrance to and travel within the refuge shall be over estab- 

 lished routes of travel or as otherwise designated by the land 

 manager, and such travel shall be restricted to that required 

 for installation and operation of seismic tests. No additional 

 service roads shall be constructed unless specfically author- 

 ized in writing by the land manager. 



Shot hole treatment. 



LI-2 The shot holes shall be thoroughly filled and plugged after 

 drilling. 



Cleanup and restoration. 



U-3M Any damage to existing surface vegetation, water channels, or 

 other physical features will be restored to original site con- 

 ditions immediately upon the completion of the seismic survey. 

 Restoration shall include, but is not limited to: grading to 

 return original site contours and drainages, discing or plowing 

 to restore former soil structure, and revegetation with native 

 species to replace damage flora. 



U-5P Following completion of the seismic survey, the land manager 



may conduct an on-site inspection to verify that restoration or 

 mitigation of any environmental damages has been satisfactorily 

 completed and may, at that time, require additional measures 

 necessary to satisfy permit requirements. 



U-8P If it becomes necessary to remove topsoil while bulldozing a 

 seismic corridor, the topsoil shall be separated from other 



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