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M03030GE <br />• - This report presents our geotechnical engineering comments, <br />suggestions and recommendations with respect to the existing <br />reclamation slope theoretical calculated stability. <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 reclamation site is located at the West Mine Portal bench at <br />the Bowie Number T Mine located about two (2) miles north of <br />Paonia, Colorado. A project vicinity map is presented on Figure 1. <br />2.2 Site Conditions <br />{~ At the time of our field study the proposed portal site was <br />} vacant. The reclamation site contained an existing man made slope <br />which slopes down to the east at an inclination of about three (3) <br />~ to one (1) (horizontal to vertical). Roatcap Creek is located <br />along the eastern edge of the reclaimed area. <br />2.3 Subsurface Conditions <br />The subsurface exploration consisted of observing, describing and <br />sampling the soil materials encountered in two (2) auger advanced <br />test borings. The approximate locations of the test borings are <br />shown on Figure 2. The logs describing the soil materials encoun- <br />tered in the test borings are presented in Appendix A. <br />The soil materials encountered in the test borings consisted <br />generally of man placed fill .to depths of about thirty (30) to <br />fifty-five (S5) feet. The man placed fill material consisted of <br />sandy and gravelly clay material with cobbles and boulders. <br />Formational material was encountered in the test boring 1 at a <br />depth of about fifty-five (55) feet. The formational material was <br />a very hard sandstone. Auger refusal was encountered in the <br />formational material at a depth of about fifty-seven (57) feet. No <br />• <br />2 <br />~tambert anD ~,saociate,~ <br />GO NGUITING GEOTEGN NIGI~E ENGINEERS AND <br />M•TER1111 TESTING <br />