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103 ?2UNeCASeneca Coal Compan <br />January 3, 2011 <br />Colorado Department of Health <br />WQCD-PE-B2 <br />4300 Cherry Creek Drive South <br />Denver, CO 80246-1530 <br />RE: Quarterly Discharge Monitoring Report for Permit CO-0000221 <br />Dear Sir or Madam: <br />Pursuant to the quarterly reporting requirements contained in Colorado <br />Discharge Permit CO-0000221 for the Seneca Mine Complex, enclosed find <br />the fourth quarter 2010 discharge monitoring reports for Outfalls 005, <br />006 and 008 to 017. In this quarter, no discharges were observed at <br />Outfalls 005, 009, 011, 013 and 014. <br />For Outfall 015, deep snow on this long, narrow road prevented safe <br />access, even with a snowmobile, in December. Winter time monitoring <br />exemptions exists for this site (CPDS permit, Part I, page 20). <br />No excursions of effluent limits occurred this quarter. Please contact <br />me at 970-276-5209 if you have any questions. <br />Sincerely <br />;) 'Q? o--? <br />Dennis Jones <br />Hydrologist I <br />cc: Ms. Susan Burgmaier <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203-2273 <br />Seneca Coal Company o P.O. Box 670 • Hayden, Colorado 81639 <br />Telephone (970) 276-5217 • FAX (970) 276-5222