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-8- <br />All water quality data obtained from sampling of the Colorado River (as <br />required in Section V of the April 8, 1985 Findings) should be <br />submitted to the Division. <br />8. Powderhorn Coal Company should submit to the Division three copies of a <br />revised hydrologic monitoring map which accurately shows the labeled <br />locations of all wells, piezometers, water quality sample points <br />(Colorado River), surface water gage sites, sediment ponds, and NPDES <br />discharge points. These maps should be submitted no later than July 1, <br />1986. In addition, this map should be updated as monitoring points are <br />added or deleted from the permit requirements. <br />9. NPDES reports and sediment pond inspections should continue to be <br />reported on a quarterly basis. It is recommended that no other <br />hydrologic data be submitted quarterly unless special circumstances <br />exist. Rather, Powderhorn Coal Company should tabulate and submit all <br />hydrologic data in one Annual Hydrologic Report. This annual report, <br />which should be based on a water year (October 1 through September 30), <br />should be submitted to the Division by January 30 of the following <br />year. The Annual Hydrologic Report should include, along with the <br />tabulated data, a discussion of the hydrologic systems at the mine, <br />identify any quality or quantity trends mainfesting themselves in these <br />systems, and an update to the Hydrologic Consequences of Mining section <br />of the permit application, if necessary. <br />srs <br />0147E <br />