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<br />Colorado Yampa Coal Company <br />June 24, 1985 <br />T0: Mike Kondelis <br />FROM: Rick Hofmann <br />SUBJECT: FIELD - DENSITY TESTING OF TCC ACCESS HAULROAD (CYCC PROTION <br />The field-density testing has been completed on the small (Approx. 120') <br />stretch of road connecting Twenty Mile Coal Company with our main haul road. <br />Three separate tests were conducted using the balloon method and equipment <br />which conform to ASTM D-2167-66. A sketch of the area and test-hole locations <br />are provided on attachment "A". <br />• For the purpose of calculating percent proctor values, I referenced the <br />curve determined last March by Randall & Associates, Inc. (sample No. 4) for <br />Twenty Mile Coal Company. Richard Wright and Michael Astuto of TCC provided a <br />copy of this report which is included here as attachment "B". <br />TEST RESULTS: <br />TEST HOLE DRY DENSITY (pef) <br />1 146.6 <br />2 146.4 <br />3 141.5 <br />Average: 144.8 <br />/]~-~M~1.-~ <br />R <br />ATTACHh1ENTS <br />PERCENT OF PROCTOR <br />104% <br />104% <br />101% <br />103% <br />cc: Engineering File <br />• <br />