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Annually, by March 15 of each year, Trapper will provide the Division a brief report, with an as-built <br />~~ postmine contour map showing the approximate postmine position of drainageways. However, the best <br />resolution which may be obtained is a 10-toot contour interval, and so the location shown on the annual <br />map will be only accurate to ±50 feet laterally. The report will also describe where drainageway sections <br />have failed, and what actions were taken to repair the failed section. The points of failure will be shown <br />on the annual postmine contour map. Failure will be defined as the loss of erosion control treatment and <br />excessive channel cutting. Appendix W will be updated to contain each years report and map. <br />Also, in order to estimate the impact of runoff events on reestablishing drainageway treatments, Trapper <br />will provide the Division measurable peak flows from Coyote drainage as part of the annual report (see <br />Appendix W). Data will be provided from April 1 through September 30 each year, starting in 1988 and <br />ending in 1991. <br /> <br />,~ <br />4-183b <br />$Ityl9o <br />