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f~ • • <br />,~ <br />1.0 INTRODUCTION <br />Regrading at Energy Fuels Mining Company's (EFMC) Raton Creek Mines (Permit # C82-055) was <br />completed in early 1994. Previously stockpiled soil materials were spread to a nominal depth of 4 to 6 <br />inches over the surface of the coal refuse pile. With the exception of the surface of Borrow Source 1 and <br />a portion of the disturbed slopes west of the "Mine 1 Portals", which consist of soil materials, the surface 4 <br />feet of graded material overlying the remaining disturbed acreage is composed of overburden and allied <br />•~ geologic materials. In addition, overburden materials were used to "cap" the coal refuse pile to a depth of <br />~ 4 feet prior to the reapplication of stockpiled soils. <br />Given that no additional soil exists for reapplication to the disturbed area, EFMC proposes to use <br />overburden material as a topsoil substitute on regraded areas not subject to resoiling practices. EFMC <br />wishes, in addition, to further confirm the suitability of overburden material as the required 4-foot cover for <br />ti <br />the coal refuse pile. To this end, EFMC undertook an extensive soil/overburden sampling program in July <br />of 1994 to determine the suitability of graded overburden as a topsoil substitute material and as a cap for <br />~.>, the coal refuse pile. This report presents the results of this sampling program. <br />r~ <br />` ; This report is divided into five sections, including the Introduction. Section 2.0 discusses the <br />'~2 <br />methods employed to complete the July sampling program and lists the soil and overburden sampling <br />) studies conducted previously at this mine site. Section 3.0 presents a detailed analysis of the analytical <br />',J data resulting from the July sampling program as well as a summary of the results of previous sampling <br />studies listed in Section 3.0. Section 4.0 presents a summary of the results of this study as well as <br />recommendations, based on the discussion in Section 3.0, with respect to seedbed material handling and <br />(~ revegetation practices which can be employed on site to increase the potential for reclamation success. <br />I~`.• ~ Literature cited in this report is Listed in Section 5.0. Appendices 1 and 2 contain copies the field sample <br />~.~ <br />forms completed for each of the selected sampling sites and the results of the laboratory analysis <br />r~ conducted on soil and overburden samples collected at the project site in July, respectively. Appendix 3 <br />contains the Wyoming topsoil substitute suitability criteria used to evaluate the results of the laboratory <br />analyses conducted on the samples collected in July. Map SP, included in the map pocket, depicts the <br />~'^, <br />IrSJ <br />locations of the 10 points at which samples were taken during the most recent sampling program. <br />1 <br />1"~, <br />f"?. <br />``~•, <br />Lt. <br /> <br />f ~~ 1 <br />t-'~ <br />