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• the mining operations that occurred in the 1972 to 1975 time period. The <br />original survey of Pond 002 was presented in the C-80=005 mining permit in <br />1980 and shown on the original Exhibit 7-8. Pond 002 was next surveyed in <br />the fall 1987; therefore, approximately seven years had elapsed between <br />surveys. On the average, this would translate into approximately 11.5 <br />ac-ft/year of sediment inflow. In all likelihood there might have been <br />more sediment generated in the early years and less sediment runoff in <br />later years as the mining disturbance and associated reclamation <br />activities advanced away from the pond. The 80.18 ac-ft of sediment <br />inflow occurred over a minimum time period of seven years. <br />• <br /> <br />