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<br />."."'" 0 <br />t. J 1. C> <br /> <br />3 <br /> <br />1 <br /> <br />INTRODUCTION' <br /> <br />On November 161 1977, I was asked by ~~e U.S. 9ureau of <br /> <br />Recl~ation, Denver Office, to make an independent review of the <br /> <br />preliminary analysis of tne safety of t.."e ~larro"'s Dam, Pick-Sloan <br /> <br />Missouri Basin Program. Colorado. <br /> <br />The review is to deteDnine if a sate foundation exists and it <br /> <br />a safe earthfil.l structure ca.... be constructed upon it. The report is <br /> <br />to cover the foundation c;eology and the foundation seepage conditions. <br /> <br />particularly at the end of the p~oposed slurry trench in t.."te rig:et <br /> <br />abutment, and shall include an evaluation of the adequacy of the <br /> <br />proposed maximum ~ankment section. <br /> <br />In Denver, on December 5, 1977, a briefing was given on previous <br /> <br />work on the site. A list of all materials provided for this review is <br /> <br />included as Appendix A of this report. <br /> <br />On December 6, 1977, an ir.spe:ction trip was made to the Narrows <br /> <br />Dam site. to exa."':I.ine rock and soil outcJ:ops, make a quick inspection by <br /> <br />air reconnaissance over the dam and reservoir sites. and see some of <br /> <br />the places designated as sources of material for the embankment. 0.5. <br /> <br />Bureau of Reclamation pe:!'sonnel from the Ft. Morgan field office, <br /> <br />together with representatives from the Denver office, served as guides <br /> <br />tor this inspection trip. <br /> <br />The plan was to present the result.s of this review orally in <br /> <br />Denver on January 10, 1978 and to submit a written report on January 16, <br /> <br />1978. <br /> <br />^' <br />