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COMMENT 4 <br />Finally, Peabody proposes to implement a sediment level monitoring schedule of every 3 <br />years. Familiarity with the mine site requires the Division to impose a monitoring <br />schedule of once a year until it can be shown that the numbers presented in the 1985 <br />survey are consistent. The southeast pond had a large open pit upstream which collected <br />most of the sediment generated until last year. Sediment yield measured in this pond is <br />most likely not reflective of future sediment yields. <br />RESPONSE: <br />PCC will revise their pond survey schedule and comply with an annual pond survey until <br />it can be shown that the numbers presented in the 1985 survey are consistent. <br />• <br />J <br />4 <br />