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2. STREETER FILL SURVEY MONUMENTS <br />• <br />Requirement <br />As per Rule 2.06 Special Categories, Colowyo is required to <br />monitor, quarterly, the 12 survey monuments on the face of <br />Streeter Fill. <br />Response <br />Two monuments are located at approximate 100' intervals <br />from the 6700' level to the 7200' level on the Fill. Refer to <br />the 1991 Annual Report Map for details regarding the specific <br />location of each monument. A printout of the survey data is <br />shown in Exhibit 9. Streeter Fill Surve y Monument Data. The <br />resulting diagrams derived from this data are contained in <br />Exhibit 10. Streeter Fill Survey Monument Diagrams. <br />This data indicates that the trends of the past years are <br />• continuing: <br />1. The settling of the fill material remains stabilized. <br />After initial settling during the first four or five <br />years, monitoring indicates no significant changes. <br />Overall settlement ranges from 1.5 to 3.6 feet which is <br />minimal considering the depth of the fill at the upper <br />elevations. <br />2. Similar to settling, lateral movement also appears to <br />have stabilized. Lateral movement has stabilized at <br />generally less than two feet and, with the exception of <br />the 6700 level, in an easterly direction. <br />n <br />U <br />4 <br />