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M03106GE <br />- The field study included obtaining a sample of the current gob <br />pile material for laboratory strength tests. <br />- The laboratory study included tests of select soil samples <br />obtained during the field study to help assess: <br />the soil strength potential (internal friction angle and <br />cohesion) of samples tested, <br />the swell and expansion potential of the samples tested, <br />the settlement/consolidation potential of the samples <br />tested, <br />the moisture content and density of samples tested, and <br />the moisture cohtent-dry density relationship (Proctor) test <br />of the coal gob sample tested. <br />- This report presents our geotechnical engineering comments, <br />suggestions and recommendations for planning and design of site <br />development. <br />- Our comments, suggestions and recommendations are based on the <br />subsurface soil and ground water conditions encountered during . <br />our site and laboratory studies. <br />- Our study did not include any environmental or geologic hazard <br />issues. <br />2.0 SITE CHARACTERISTICS <br />Site characteristics include observed existing and pre-existing <br />site conditions that may influence the geotechnical engineering <br />aspects of the proposed site development. <br />2.1 Site Location <br />The proposed gob pile is located at the Bowie Number 2 Mine <br />located about four (4) miles east of Paonia, Colorado. A project <br />vicinity map is presented on Figure 1. <br />2.2 Site Conditions <br />At the time of our field study the proposed gob pile site was <br />vacant. The proposed site slopes down to the south at an inclina- <br />tion of about two (2) to one (1) (horizontal to vertical) and <br />flatter. Several drainage channels cross the site in a southerly <br />direction with small ridges between the drainages. The proposed <br />gob pile site contains a medium dense cover of native dryland <br />ground type vegetation and juniper and pinion trees. <br />. 2 <br />~tam6ert and ~~,~aeiate~ <br />CONSULTING GEOTECNNICAL ENGIN EENS ANO <br />MATEPIAL TESTING <br />