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Dudash, Joe <br />From: Walker, Byron <br />Sent: Wednesday, March 03, 2004 3:56 PM <br />To: Dudash.JOe <br />Cc: Hernandez, Dan; Brown, Sandy <br />Subject: RE: Rockfall <br />Joe, Jim Stover asked me to reconsider the requirement for a stability analysis as the movement of materials <br />unloaded the upper area, and placed these materials lower on the section. I agree, the overall threat should be <br />reduced, but it does not address the specific cut slope and berm foundation areas. I coordinated the request with <br />Jon White (March 3, 2004, 15:30). He and I looked at sheet 2 of 4 of the Rock Catchment Design, and noted that <br />paragraph 3 indicates a global FS greater than 1.3. Foundation materials were included. Thus we don't have the <br />analysis, but we have the results. Jon and I agree that any small Bluffs in the cut slope above would be a minor <br />nuisance, requiring maintenance. Also, a minor slip of the wall foundation could be repaired. Either failure is not <br />likely to be a safety concern at the lower portal bench. So, I suggest we honor Jim Stover's request, and consider <br />that we have enough. I withdraw my request for additional stability analysis, upon receipt of page 2 of 4 over a PE <br />stamped certification. Please see me if you have any questions. Byron <br />-----Original Message----- <br />From: Dudash, ]oe <br />Sent: Wednesday, March 03, 2004 2:22 PM <br />To: Walker, Byron <br />Cc: Brown, Sandy <br />Subject: FW: Rockfall <br />As promised. Please let me know what you think. Thanks! <br />-----Original Message----- <br />From: ]im Stover (mailto:jestover@bresnan.net] <br />Sent: Wednesday, March 03, 2004 2:05 PM <br />To: Joe Dudash <br />Subject: Rockfall <br />Joe: <br />Here's a drawing that shows the area where the berm is to be constructed has and effective slope of <br />3H:1 V. Please pass this along to Byron. <br />A full scale map is being transmitted to you via FedEx. <br />Jim Stover <br />3/3/2004 <br />