Laserfiche WebLink
' Western Slope Carbon, Inc. Page 3 <br />December 15, 1981 <br />undisturbed and disturbed (bulk) samples of the site <br />' materials for laboratory testing. A monitoring well <br />was to be installed in one or two test holes and water <br />' samples were to be collected for full environmental <br />testing. <br />' 4. Based on the above developed data, evaluate the <br />stability of the existing embankment under both <br />' static and pseudo-static (seismic) conditions. <br />5. Evaluate the potential for leachate generation and <br />' seepage, and consequent environmental damage. <br />6. Recommend appropriate grading criteria for embankment <br />' stabilization, continued GOB placement and compaction, <br />and construction of perimeter surface water diversion <br />' ditches. <br />7. Prepare a report summarizing the results of our in- <br />vestigation and recommendations for continued operation <br />of the disposal site. <br />' SERVICES PERFORMED <br />' One of our engineering geologists reviewed available pertinent publications <br />and examined the disposal site and vicinity. He then positioned and logged <br />five, hollow-stem, auger borings up to 27 feet deep. The borings were drilled <br />with truck-mounted equipment at the locations shown on the Plot Plan. Twenty- <br />' five undisturbed drive samples were attempted, using a 140 lb. drop hammer. <br />Twenty-three undisturbed samples, one grab sample, and two bulk samples of <br />the materials encountered were obtained for laboratory testing. Slotted <br />plastic pipe was inserted in Borings 2 and 5 for subsequent groundwater/leachate <br />measuring and sampling. Additional bulk samples were obtained of the coal process <br />' waste (GOB) presently being hauled to the site and of the native surface topsoil. <br />Subsurface materials encountered in the borings are described on Plates 3A <br />' through 3C, Boring Logs (preliminary). The system used to describe the materials <br />encountered is explained on Plate 4, Method of Soil Classification, and Plate 5, <br /> <br /> <br />