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<br />B. MONITORING REQUIREMENTS <br />Part I <br />Page lk of 19 <br />Permit No.: CO-0032751 <br />12. Additional Monitorinc• Instream Plow Measurements and Total Hardness <br />Nonitorino <br />In order to verify the assumptions made for determining the limitations <br />of this permit, the permittee shall install a flow measuring device in <br />Coon Track Creek at an adequate point above the Croae Hine and Caribou <br />Mine discharges. The permittee shall also monitor for Total Hardness <br />(ae CaC03) in Coan Track Creek at a point below the discharge from the <br />Croae Mine where adequate inetream mixing of the discharge occurs. The <br />permittee shall work with the Division in defining these two monitoring <br />locations before they are established, and the final locations shall be <br />submitted to the Division in a facility diagram. Total Hardness shall <br />ba monitored on a monthly basis for at least one year. The instream <br />flows shall be monitored routinely on a weekly basis, preferably during <br />non-etormwater event periods, but at least 16 hours after any rainfall <br />events. In addition, the annual low instream flow shall be determined <br />one time during December, as based upon several measurements of daily <br />flow taken during the week. The individual details of this one-time <br />annual low flow determination will need to be established with the <br />Division prior to this study being initiated. <br />Code: i - 11 Date: 1-84 <br />