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Pernrit.No. COG8S0000 <br />Facility No. COG850019 <br />Page la <br />Outfal1001 shall be the discharge of final treated water prior ro entering the Harvey Gap Drainage. EBIuent limitations <br />arc specfed below and in Part I. B.1.6) and c). <br />Parameter .:. :.. Limitatibn Rationale ..: <br />Flaw, MGD Report Design Capacity <br />Settleable Solids, mQ/l 0.5* c/ Federal BAT <br />pH, s. u. 6.5-9.0 a/ Winer Quality Standards <br />Oil and Grease, mg/1 10 c/ State EjJluent Regulations <br />Total Dissolved Solids, mg/l Report CO River Salinity Regulations <br />a/ Minimum-Maximum <br />b/ 30-Day Average/Daily Maximum <br />~/ Daily Maximwn <br />* The discharge may be eligible for an exemption from this limitation if it is demonstrated that the discharge occurred <br />as a result of precipitation greater than the associated 10 year, 24 Iwur event. See permit, Pan /.B. I.dJ. <br />71re petmittee is encouraged to read the general rationale for an understanding of how this permit was developed and to <br />read the permit to see wlwt requirements exist. Within the body of the permit iuelf, monitoring requirements are specified <br />in Part I.B.3.b), the Stormxater Management Plan requirements are specified in Part I.B.2. and notfication requirements <br />for ejjluent violations are addressed in Part II.A. <br />Salinity (TDS) monitoring ojthe discharge wiU be requtrcd, as shown in the table above. Phosphorus monitoring of <br />the discharge will not be required. <br />Certification: Based on the above information, Eastside Coal Company, Inc. is certified to discharge from the Easuide <br />Mine under the general permit for coal mining, identified as permit number COG-850000. A[l correspondence relative <br />to this facility should reference the specific facility number, COG850019. <br />!on C. Kubic <br />May 6, 1997 <br />