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1.0 INTRODUCTION <br />This report summarizes the work performed by Sunrise Engineering (SEI) to comply with <br />the United States Forest Service (USFS) and the Colorado Division of Minerals and <br />Geology (CDMG) regulations to upgrade the existing Sylvester Gulch Road on Mountain <br />Coal Company's (MCC) property and extend the road to the existing West Flat Iron Road <br />on USFS property. This road is designed to meet the requirements of CDMG regulations <br />for mine access roads on MCC's property from Station 82+51.53 to approximately <br />Station 108+00. The remainder of the road is on USFS property to its end at Station <br />150+76.22 and was designed to meet both CDMG and USFS design criteria. Overall, the <br />entire length of the road upgrade and extension is 1.29 miles. <br />The proposed plans for the upgrade and extension can be found in Appendix A of this <br />report. The proposed special provision specifications can be found in Appendix B of this <br />report. A summary of the design criteria utilized for this road design is summarized in <br />Table 1.0. <br />The significant work needed for this design were the following: <br />1.0 A field geotechnical, geological, and seismic investigation of the proposed roadway <br />alignment and borrow sources to obtain soil samples of the foundation and borrow <br />soils, geologic mapping of existing landslides, and determine the depth to bedrock in <br />• critical locations. <br />2.0 Laboratory testing program to obtain strength and classification properties of both <br />foundation soils and proposed roadway fill. <br />3.0 The performance of a detailed slope stability analysis of selected roadway cross <br />sections and the proposed borrow source to verify slope stability factors of safety are <br />met for both CDMG and USFS. <br />4.0 The performance of a hydrology and hydraulics study to obtain 100 year flood flows <br />and to adequately design all required culverts and ditch conveyances to CDMG and <br />USFS requirements. <br />5.0 The determination of a suitable stockpile location for the excavated unused topsoil. <br />6.0 The development of roadway plans and special provisions meeting the requirements <br />of CDMG and USFS. <br />7.0 The development of construction monitoring requirements to ensure the roadway will <br />be built according to the plans and specifications. <br />8.0 The development of a proposed reclamation plan to reclaim the land once the road is <br />no longer in use by MCC. <br />This report will discuss in detail each one of these significant works in the following <br />sections and appendices. <br /> <br />