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M05003MT <br />I - We visited the site on January, l8 and February 1 and 4, 2005 to • <br />obtain samples of the in-place coal gob embankment material. <br />- The laboratory study included tests of soil samples obtained <br />during our site visits and was performed on remolded specimens <br />to help assess: <br />_ the soil strength potential (internal friction angle and <br />{ cohesion) of remolded samples tested, <br />. the natural moisture content of samples tested, and <br />. the moisture-density relationship of soil samples tested. <br />-~ - Our comments, suggestions and recommendations are ',based on the <br />.~ soil strength parameters encountered during our laboratory <br />study, discussions with Mr. Stover and Mr. Bear and the <br />subsurface soil and ground water conditions encountered during <br />=~ our 10 November 2003 Geotechnical Engineering Study and the <br />proposed gob pile geometry. <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 site is located at the Bowie Number 2 Mine located <br />approximately 4 miles east of Paonia, Colorado. <br />2.2 Site Conditions <br />At the time of our site visits the gob pile was constructed to <br />near one hundred (100) feet vertical height with an approximately <br />two to one (2:1) (horizontal to vertical) slope face. <br />2.3 Subsurface Conditions <br />The subsurface conditions encountered during our previous study <br />for the gob pile foundation are described in our 10 November 2003 <br />2 ~ • <br />~Lam6ert a'nD ~s',ooriate~s <br />GONSVLTING GEOTECNNICAL ENGINEEFS AND <br />NATERUL TESTING <br />