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IIIIIIIIIIIIIII IIII ~~` <br />999 <br />r,;~~~--d Holsa: <br />Silt Co.,81652 <br />R7F-2947 <br />Eastside Coal Mine <br />P.0. Box 161 <br />Silt Co. 61652 <br />Re: Subsidence Monitoring <br />I certify that on February 13, 1990 I conducted a field <br />survey to monitor the position of Subsidence Monument No. 1'. <br />Listed .below are the results of that survey: - .-.- <br />North Coordinate 8574.896, East Coordinate 9269.108 <br />Elevation 6411.33. <br />The survey is based on coordinates of N 8725.513, E 8958.266 <br />at the backsight point (Rebar & Cap) named Mine. This point <br />is also the benchmark for vertical control having an <br />elevation of 6347.00. Coordinates for the setup point (iron <br />stake near tire) are N 8683.647, E 8275.055. <br />This survey meets or exceeds Second Order, Class II survey.. <br />standards. <br />Richard L. Ho <br /> ;' <br /> <br /> <br /> S <br />1 <br />i <br /> <br /> <br /> <br />- - <br />