APPROACH 



The main factors considered in the geotechnical evaluation were site 

 selection, access, operation, and rehabilitation. Primary information re- 

 viewed for each site included mining plan information from permitting agen- 

 cies, aerial photographs, ground photographs, and field notes taken by 

 the project hydro I og i sts. 



Early in the review effort, a geotechnical fact sheet and evaluation 

 form were developed and filled out for each site. The purpose of these 

 forms was to assemble relevant information, to draw out observations of 

 project personnel who had visited the sites, and to general ly focus the 

 review effort. Although the geotechnical data base was very limited at 

 a number of the study sites, it was bel ieved to be sufficient overal I to 

 allow certain meaningful judgments to be drawn. 



The following sections contain geotechnical discussions related to 

 gravel removal during principal stages in the life of a material site. 



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