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Permit :Vo. COG-850000 <br />FaciiiryNo. COG-8~001~t <br />Page t b <br />ALTERNATE LIMITATIONS FOR POST-MINING RECLAMATION AREAS <br />Any discharge or increase in the volume of a discharge from a reclamation area, caused by precipitation within any 24-hour <br />period greater than the 10-vear 24-hour precipitation event (or snowmelt of equivalent volume) may substitute the following <br />limitations for these specific parameters only, subject to burden of proof requirements described in Part I.B.6 of the permit. <br />_.._.,._ . _ ~. ~ ,Limitations ~.--~. ~ ~ ; . ", ,~ . lionitorm ~''' lc <br /><< . <br />~Paramzter. '' ~ 30 Day ~ y7 Da}- Daily Ratlonal~ ~:,+.~ gi.~??P <br />r '~ ~~` y: r, . ~, , ., ~ ~ 2 ,Frequency, Type, .~ ., <br />Federal Effluent Limitation Guidelines <br />Settleable Solids, nil/1 Report NA Report Federal ELG Weekly Grab <br />Sediment Control Plan -Applicable to Reclamation Areas Served by Outfalls 001 and 002. <br />The Sediment Control Plan requirements in Part I.B.3.b. of the permit apply to the reclamation areas at this facility. The permittee <br />shall prepare and submit a Sediment Control plan by July 1, 2009. The Division will review the Sediment Control Plan and approve <br />it. Once approved by the Division, the Sediment Control Plan will become a part of this permit certification by reference. <br />Compliance Schedule for Sediment Control Plan for Reclamation Areas <br />Code 12505 A Sediment Control Plan shall be prepared and submitted by July 1, 2009 for the Reclamation Areas as required under <br />Part I.B.3.b. of the CDPS General Permit for Coal Mining Facilities and 40 CFR 434.82. The plan required by this compliance <br />schedule shall be directed to the Industrial Unit of the Permits Section for fmal review. <br />,ode'' Event ':Description 't;' <br />Part LB.3.b. 07/01/09 <br />t-- <br />~. ~ ~: <br />'er:mit Citation''~~ueDate <br />12505 Submit Plan Submit Sediment Control Plan <br />r Conditions <br />Antidegradation <br />Antidegradation review does not apply to this permit because limitations based on Water Quality Standards are not applied in this <br />certification. <br />Groundwater Contamination <br />If groundwater contamination is encountered, then the permittee is to contact the Division, cease all discharges, and if appropriate, <br />contact the owner of the collection system receiving the discharge. Since the discharge of contaminated groundwater is not <br />covered under this permit, the perrnittee 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 />Sa plinS <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 pennittee 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 />' erse flows; containment of water by hay bales or other comparable structures; the use of geocloth, filter fabric, or plastic sheeting <br />protection of containment structures; rip-rap; and/or any other approved methods. <br />The General Permit for Coal Mining is attached and the permittee should review this permit for familiarity with all of the permit <br />requirements. If the permittee has questions related to this certification that cannot be answered by a review of the permit, the permit <br />writer should be contacted. <br />Andrew J. Neuhart <br />303-692-3655 <br />06/16/08 <br />