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• The geotechnical analysis completed by C"fL/Thompson, Inc., concluded that the Streeter <br />Fill, as built by Colowyo meets the stability requirements of OSM regulations. <br />The fill did not, however, meet the design criteria: requirement of the OSM Interim <br />Regulations and therefore was still in violation. To resolve the issue, OSM agreed to <br />withdraw the Notice of Violation conditioned upon the agreement that Colowyo submit an <br />application for qualifying the Streeter Fill under the Experimental Practices Program referred <br />to in 30CFR, Section 785.13; see Hearing for Review of Notice of Violation No. 79-V-1-4, <br />August 7, 1979 in Exhibit 12, Experimental Practice Information. <br />Subsequent to the hearing, Colowyo filed an application for an experimental practice on <br />September 4, 1979, (see Exhibit 12, Experimental Practice Information) and receipt of the <br />application was acknowledged in a letter from Walter N. Heine, Director of OSM, on <br />September 28, 1979 (see Exhibit 12, Experimental Practice Information). <br />To date, there have been no final approvals or denials of the Experimental Application by <br />OSM or the Division. <br />In correspondence dated October 11, 1979, OSM requested the Division recommend <br />approval of the experimental practice designation for Colowyo's Streeter Fill. In a letter <br />dated February 13, 1980 the Division replied to OSM that approval of the experimental <br />practice could not be given until certain questions were resolved. A copy of the <br />correspondence from the Division, the February 6, 1980 letter from Mr. Jim Pendleton <br />• commenting on the Slope Stability Analysis of Colowyo's Streeter Fill, and the February 13, <br />1980 letter from Mr. Fred Banta to Mr. Donald Crane requesting Clarification Before <br />Approval of Colowyo's Streeter Fill is included in Exhibit 12, Experimental Practice <br />Information. On March 24, 1980, CTL/Thompson, Inc, responded to the concerns of the <br />Division (see Exhibit 12, Experimental Practice Information, March 24, 1980, letter from <br />CTL/Thompson, Inc. to OSM commenting on Questions Raised by Division Concerning <br />Colowyo's Streeter Fill). <br />C J <br />2.06-5 <br />