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<br />• CONCLUSIONS <br />Based on the subsurface information obtained during this investigation, it appears that the use of <br />this property as a gravel mine will have very little affect on the high pressure gas line and <br />overhead electric line which cross the subject site, as long as the recommendations outlined in <br />this report aze followed for the construction of the gravel pit excavations and haul roads. <br />Based on the results of the field and laboratory investigations, the proposed construction and the <br />slope stability analyses completed by our firm, it appears that the cut slopes constructed during <br />[he mining of the gravels at the subject site, which are designed with a 1.25 (horizontal) to l <br />(vertical) slope configuration, will exhibit adequate factors of safety against sliding and should <br />be stable on a short term basis, if they are properly dewatered. Permanent cut slopes should be <br />constructed to a 2 horizontal) : 1 (vertical) or flatter configuration. <br />Further discussions of the geotechnical considerations related [o construction of the proposed <br />cut/fill slopes and haul roads are outlined herein. <br />PURPOSE AND SCOPE OF STUDY <br />• This report presents the results of a geotechnical investigation and slope stability evaluation for the proposed <br />Camilletti River Pit to be constructed within the SE 1/4 of Section 15, Township 6 North, Range 86 Wes[ in <br />Roust Counry, Colorado. The approximate location of the project site is shown in Figure JII. <br />A field exploration program was conducted to obtain general information on the subsurface conditions <br />encountered at the this site and to obtain samples of the soils for laboratory testing. The material samples <br />obtained during the subsurface investigation were tested in the laboratory to provide data on the strength, <br />classification and engineering characteristics of the on-site soils. The results of the field and laboratory <br />investigations are presented herein. <br />This report has been prepazed to summarize the data obtained and to present our conclusions and <br />recommendations based on the proposed construction and the subsurface conditions encountered. A discussion of <br />geotechnical engineering considerations and site conditions related to construction of the proposed cut/fill slopes <br />and haul roads are included. <br />PROPOSED CONSTRUCTION <br />Based on the plans provided by the client, it appears that the portion of the property which is to be trained is <br />. situated between the Yampa River to the north and Trout Creek to the south. The site generally lies within the <br />southern portion of [he Yampa River floodplain azea. The eastern edge of the [nine area is roughly defined by <br />Job No. 00-4304 Northwest Colorado Consultants, Inc. Page 1 <br />