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soil nail launcher 9702455001 p.l <br /> <br />Soil Nail launcher, Inc. <br />549 South Broadway 11488 Nuda <br />Grand hrrdion, CO 81503 Gornmerte City, CO 80022 <br />Phone 970 270 4624 fax 970 245 5001 email bbarrett33t~aOl.com <br />www.soilnailfauncher.com <br />October 3, 2003 <br />Mr. Kent Whitmer, President <br />East Fork Mutual Irrigation Company <br />Box 38 <br />• Hot Sulphur Springs, CO 80451 <br />Dear Mr. Whitener, <br />Soil Nail Launcher, Inc. installed arrays of Launched Nails in two landslide <br />headscarps along the East Fork Ditch in May of this year. These nails are <br />designed to stop or slow the progress of those slides into the ditch line proper. <br />The two active landslides are quite large and rem~liation will be difficult. We did <br />nothing to mitigate the damage they have caused downslope nor did we do <br />anything to affect them either positively or negatively. The immediate problem <br />we addressed was the concern that steep scarps under your ditch road bank <br />would "calve off' and cause damage to your road and ditch. <br />The Launched Soil Nails are intended to intercept a local "Rankine-type" failure in <br />the unfailed soil slope. They seem to be performing as intended. The concern for <br />this local solution would be a major expansion of the downsk~pe slides that would <br />include a major portion of the hillside and ditch. It is difficult to predict the long- <br />term prognosis for those slides. <br />Please I-et me know if you have questions or comments. <br />~ Since I <br />y yours, <br />~l~ / <br />o ert K. Barrett, President <br />Cc: Brian Lenn, NWCC <br /> <br />