Laserfiche WebLink
through the colluvial material occurring before the large <br />storm event and, likewise, is not responsible for these <br />gullies and headcuts after the May, 1993 storm event that <br />exceeded the design requirements of Rule 4. <br />2. The May, 1993 storm event was of such tremendous size <br />that the flow of material and water down these natural <br />drainages would have occurred regardless of Colowyo's <br />presence in the area. Local residents have noted that <br />similar storm events and resultant erosion and sediment <br />deposition near the highway is very common. The <br />existence of colluvial fans at the outlet of each <br />drainage along Goodspring Creek is clear evidence that <br />these natural geologic forces have always been and always <br />will occur in the region. <br />3. Colowyo has, on numerous occasions, indicated to the <br />Division a willingness to provide some additional work on <br />the two areas of concern. Various proposals have been <br />discussed and no firm resolution has been made. Colowyo <br />firmly believes that given the fact that the gullies and <br />erosion of the drainage bottoms were pre-existing <br />conditions, Colowyo has no liability. Furthermore, we <br />are concerned that the Division might expect Colowyo to <br />correct deficiencies originally caused during highway <br />construction by the DOT. Colowyo would not be interested <br />in designing, constructing, inspecting and accepting long <br />term liability for a problem we inherited from the State <br />of Colorado. <br />With the above discussion in mind, Colowyo is prepared to <br />implement the following steps to provide a resolution and closure <br />to this issue. <br />1. We agree the north area appears to need little additional <br />work and we do not propose to intervene at this time. <br />2. Colowyo will utilize a dozer to reestablish the southern <br />drainage bottom to a condition at least similar in <br />function to the pre-existing channel. <br />3. The channel bottom will be graded to prevent future <br />headcutting as much as possible. <br />4. To enhance the stability of the regraded channel, the <br />local source of scattered rock material will be used to <br />armor the channel bottom. <br />5. The slope of the vertical scarp will be reduced to <br />control erosion and promote stability. <br />6. The disturbed area will be scarified and seeded this fall <br />to a perennial, cool season seed mixture. <br />