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Permit No. COG-850000 <br />Facility No. COG-850044 <br />Page I c <br />Groundwater Contamination <br />cif groundwater contamination is encountered then the permittee is to contact the Division, cease all discharges, and if appropriate, <br />ontact the owner of the collection system receiving the discharge. Since the discharge of contaminated groundwater is not <br />covered under this permit, the permittee shall immediately apply for a groundwater remediation certification, which will include <br />appropriate requirements for additional discharge monitoring and on-site environmental response capabilities. <br />Sampling <br />Sampling shall occur at a point after treatment, or after the implementation of any Best Management Practices (BMPs). If BMPs or <br />treatment are not implemented, sampling shall occur where the discharge leaves control of the permittee, and prior to entering the <br />receiving stream or prior to discharge to land. Samples must be representative of what is entering the receiving stream. <br />Monitoring and Reporting <br />Discharge Monitoring Reports (DMR) must be submitted quarterly as long as the certification is in effect. The permittee shall provide <br />the Division with any additional monitoring data on the permitted discharge collected for entities other than the Division. This will be <br />supplied to the Division within 48 hours of the receipt of the data by the permittee. <br />Best Management Practices <br />The permittee shall implement and maintain the Best Management Practices (BMP) for the prevention of erosion and the control of <br />solid. and liquid pollutants due to the discharge. BMPs include various options, such as: modification of the pipe discharge structure to <br />disperse flows; containment of water by hay bales or other comparable structures; the use of geocloth, filter fabric, or plastic sheeting <br />for protection of containment structures; rip-rap; and/or any other approved methods. <br />The General Permit and Rationale for Coal Mining is attached and the permittee should review this permit for familiarity with all of the <br />permit requirements. If the permittee has questions related to this certification that cannot be answered by a review of the permit, the <br />permit writer should be contacted. <br />Permit Writer <br />Andrew J. Neuhart <br />303-02-3655 <br />06/16/08