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,.-. <br />Mr. Jim Lunan - 2 - August 25, 1987 <br />In correspondence received from Peabody on November 5, 1985, an estimate of <br />0.38 acre-feet/year is provided for the annual sediment yield for Pond 004. <br />From the data provided by the annual survey and reported in appendix G, an <br />actual value of 1.29 acre-feet was evident at Pond 004 during 1986. This <br />discrepancy illustrates the usefulness of actual data obtained on an annual <br />basis. The problem noted in the discussion on the accuracy of surveying <br />methods and registration of the survey grid also points to the need for annual <br />information. <br />If you have any questions or comments, please contact me. <br />Sincerely, <br />Steven G. Renner <br />Hydrologist <br />SGR/srs <br />cc: Michael Savage <br />1952E <br />