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Geotecttnical Investigation • The surface upon which the exploration activities will occur is owned by Cyprus Western Ooat Ooag,~any. Twentymile has the legal riot to enter the property to corduc-t its explcrcatia~n activities. Site Description -Sites 1 and 5 are located within an area that has been disturbed previously by CYOC's surface minim activities. It should be noted that site 1 is located within a bowl release area. Sites 2 thrax~i 4 are located on undisturbed areas adjacent to the above referenced surface mine. In reference to Sites 1 and 5, topsoil was salvaged prior to mining the area and then reapplied during the reclamation. In reference to sites 2 through 4, apprr+Yi~tely 12 to 18 inches of soil exists within the area. The reclaimed area has been seeded to a pastureland mixture, while the undisturbed area can be characterized as rangeland dominated by sagebrush. Any areas disturbed during the site investigation will be reclaimed and seeded with CYOC's approved pastureland seed mixture. • The site investigation area is located within the Foidel GYeek drainage. Given the fact that all surface runoff drains to Pond D, no impacts are anticipated far Foidel GYeek. The borings will be into spoil and adjacent bedrock, and except for arty of the borings that may be wnverted to monitoring wells, the borisgs will be grouted or backfilled upon cwtq~letion of the irnestigation. No impacts are anticipated to the Wadge Overbuzdert aquifer. The site investigation will minimize disturbance by conducting the field activities during periods of favorable weather and field conditions. Therefore, unless adverse field or weather oortditions are encountered, topsoil will not be salvaged from access ranter into the boring or test pit sites. If an area needs to be leveled to aoco4mtodate the auger or backhoe the available topsoil will be salvaged aryl placed adjacent to the site. The auger site will be a~rx *-~+yi~++~tely 30' x 30' , and for sites located on reclaimed areas this would rec~,i re salvaging arnrr~Yimately 33 CY of topsoil per site. Sites located on the adjacent undisturbed area would require salvaging approx;mately 83 CY of topsoil per site. Upon ooaq~letion of the activities the topsoil will be redistributed over the . site. For sites that will ~,;~ minor leveling the material will be retained within the pad and the pad regraded to blend in with the surrourdirg topography upon oa~q~letion of the boring. MR 92-75 780-38 (e) Revised 05/08/92