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Peak Settleable <br /> Impoundment Rainfall Event Solids (ml/1) Freeboard (ft) <br /> No-Name #2 10-year, 24-hour 0.00 - <br /> 25-year, 24-hour - 2.5 <br /> No-Name #4 10-year, 24-hour 0.00 - <br /> 25-year, 24-hour - 2.0 <br /> No-Name#511 10-year, 24-hour 0.00 - <br /> 25-year, 24-hour - 1.8 <br /> The system, as modeled, meets the requirements of the applicable regulations. <br /> The following supporting documentation is included with this submittal: <br /> • I-Pit and J-Pit Drainage and Sediment Control Plan - Map <br /> • Impoundment SEDCAD reports for a 10-year, 24-hour rainfall event <br /> • Impoundment SEDCAD reports for a 25-year, 24-hour rainfall event <br /> • Diversion SEDCAD reports for a 10-year, 24-hour rainfall event <br /> ENGINEER'S CERTIFICATION <br /> I, James M. Mattern, a Registered Professional Engineer in the State of Colorado, certify that I <br /> am familiar with the Trapper Mine drainage and sediment control plan and that, to the best of <br /> my knowledge and information, the results shown on the attached documents meet the <br /> requirements of current CDRMS regulations. <br /> 7 �00'L/C <br /> O Ca l l l I Z v <br /> rd <br /> James M. Mattern 20537 r ate <br /> CO P.E. No. 20537 <br /> FSSZONAL �� <br />