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<br />by Shell Oil in the 1960s as discussed in Prats' et al. (1977). A test cavity was <br />developed under similar conditions to that proposed by American Soda and <br />characterized after mining had been completed. <br />6. After commercial operations begin, American Soda well 20-6 will no longer be <br />used. Until that time, well 20-6 will continue to be used for underground <br />injection during test mine operations and through construction of the <br />commercial project. <br />7. The requested information regarding final reclamation of the 13-acre <br />evaporation pond will be submitted as a technical revision to the 112 Permit <br />Application prior to initiation of pond construction. It should be noted that it is <br />unlikely that the material would have hazardous components or other <br />characteristics that would require landfill disposal. <br />The 1-acre stormwater retention pond is a single-lined pond with a maximum <br />volume of 9,075 cubic yards. Assuming about 30 percent of the pond volume <br />may contain silt and sediments at the time of final reclamation, burial of 2,723 <br />cubic yards of residue will be required. The single liner for this pond has an <br />estimated volume of 11.1 cubic yards. The contents of the pond and the liner will <br />be buried on site. <br />8. a) The plant site and the evaporation pond will be fenced with 8-foot-high <br />wire mesh fence, installed in two 4-foot rolls. The fence will be stretched tight <br />during installation to ensure that all segments of the fence will be flush with the <br />ground. Because the area where the fence will be installed will be graded, there <br />will not be significant gaps between the fence and the ground. Wood posts on <br />10-foot centers would be used for support. <br />b) As indicated in the Migratory Birds section of the Yankee Gulch Project <br />Wildlife Mitigation Plan (Steigers Corporation, April 1999), American Soda will <br />net the evaporation pond to exclude waterfowl and other birds prior to <br />discharging process fluids to the pond. The stormwater retention pond would <br />not constitute a threat to birds because it will not contain process water, and this <br />pond will not need to be netted. <br />c) The Yankee Gulch Project Soil Conservation, Erosion and Sedimentation <br />Control, Reclamation, and Revegetation Plan (Reclamation Plan) (Water and <br />Earth Technologies, Inc. and Habitat Management, Inc., April 1999) has recently <br />been finalized in consultation with the BLM. In addition, a Wildlife Mitigation <br />'Prats, M., P. J. Closmann, A. T. Arisen and G. Drinkard (1977), "Soluble-Salt Processes <br />for In-Situ Recovery of Hydrocarbons from Oil Shale," Journnl of Petroleum Technology, <br />pp. 1078-1088, September. <br />111 •pplrl~ MqurY Mpos <br />Y.nMGuY~ Ytlnm Mu~rtlJmRt <br />•mnv~ sd~ LLl' <br />