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Various surface cracks in the topsoil resulting from <br />minor topsoil settling have previously been noted and <br />monitored, but no evidence of surficial slope failure has been <br />noted. In summary, no significant changes have occurred in <br />2992. <br />4. CERTIFIED INSPECTION REPORTS AND ANNUAL SEDIMENT SURVEYS - <br />SEDIMENT PONDS <br />Re~c uirement <br />"In order to clarify specific regulatory obligations regarding <br />sediment pond certification and maintenance, as well as to <br />provide documentation on runoff and sediment generation, the <br />permittee has committed to: <br />A. Inspect the condition of all sediment pond embankments, <br />spillways and dewatering devices quarterly and, <br />B. Survey the sediment ponds to determine the actual volume <br />of sediment in each pond once a year after spring runoff. <br />The information will be submitted to the Division in an annual <br />report.." Excerpted from Colowvo Findings and Proposed <br />Decision to Approve Permit. File No. C-019-81, September 28, <br />1982. <br />Response <br />The Sediment Pond Inspection Reports are found in Exhibit <br />4 which satisfies requirement A. The reports indicate the <br />ponds are operating in accordance with certified designs. All <br />embankments, spillways, and other outlet structures are in <br />good operating condition. There is no evidence of potential <br />failure at any of the ponds. <br />In 1992, Colowyo again contracted an independent <br />surveying firm to perform a complete topographical survey of <br />all ponds. From this survey, new contour maps were generated <br />for each pond and then pond volumetrics were calculated. <br />6 <br />