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`~tzrt~r ttzt~ ~s.a~cttf~s <br /> <br />CONSULTING GEOTECH NICAL ENGINEERS AND MATERIAL TESTING <br />APPENDIX A <br />February 17, 1999 <br />~ J <br /> <br />Bowie Resources <br />P.O. Box 483 <br />Paonia, Colorado 81428 <br />Attention Mr. William Bear, Jr. <br />Subject: Geotechnical Engineering Field <br />The Coal Mine Waste (GOB) Pile <br />Bowie Number 2 Mine, East of <br />Paonia, Colorado <br />Mr. Bear: <br />This letter presents the results of our field and laboratory <br />study for density tests of the lower portion of the Bowie Number 2 <br />coal mine waste (GOB) pile. The field study consisted of <br />observing, describing and sampling the materials encountered in <br />three (3) auger advanced test borings at or near locations <br />determined by Mr. J. E. Stover. The approximate location of the <br />test borings are shown on Figure 1. The logs describing the <br />material encountered in the test borings are presented on Figures <br />2 through 8. <br />The field study included obtaining samples of the gob material <br />below an elevation of about 6005 feet. The elevation was <br />determined by Mr. Stover. The samples were obtained with thin wall <br />tube samplers until sufficient resistance was encountered to cause <br />damage to the tubes. When sufficient resistance was encountered to <br />cause damage to the thin wall tube samplers the samples were <br />obtained with a modified California Barrel sampler. The borings <br />were advanced and frequent samples were continually obtained in the <br />test boring until natural soil materials were encountered below the <br />bottom of the gob pile. The samples were returned to our <br />laboratory for moisture content and dry density tests. <br />Revised February 24, 1999 <br />PN: M99012GE <br />and Laboratory Study for <br />at the <br />The laboratory study consisted of performing moisture content and <br />dry density tests and Moisture Content-Dry Density Relationship <br />(Proctor) tests. It should be noted that samples obtained using <br />thin wall tube samplers and modified California barrel samplers may <br />experience some disturbance during the sampling operations. The <br />test results obtained using these samples are used only as <br />indicators of the in situ material characteristics. <br />P. O. BO% 3986 <br />GRAND JUNCTION, CO 81502 <br />(970) 2154506 <br />FAX: (970)268.9759 <br />P. O. BOX 0065 <br />MONiRO5E,C0 81402 <br />(970)249-2154 <br />FA%: (970(269.7262 <br />216 BODO DR. <br />DURANGO. CO 91001 <br />(970)259-5095 <br />FA%: (9701782-2515 <br />