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Permit No. COG-BSOOLIO <br />Facility No. COG-850027 <br />Page la <br />OutfalLs 001 and 002 shall be the discharges of final treated water prior to entering Carbon Junction Canyon and REA <br />Canyon, respectively. E,Qluent limitations are specked below and in Part I.B.I.aJ and cJ. <br />,Parameter:.:::::.:;.`::: .::';:::..:.. ::. ,...:..Limitation ,Ratioitble.` <br />Flow, MGD Report <br />Total Suspended Solids, mg/e 35/70* b/ <br />Total /son, mg/P 3.0/6.0* b/ <br />Senleable Solids, me/e 0.5** c/ <br />pH, s. u. 6.5-9.0 a/ <br />Oi! and Grease, mg/P 10 c/ <br />Total Dissofved Solids, mg/e Report <br />Design Capacity <br />Federal BAT <br />Federal NSPS <br />Federal BAT <br />Water Quality Standards <br />State EJjluent Regulations <br />CO River Salinity Regulations <br />a/ Minirmtm-Maximum <br />b/ 30-Day Average/Daily Maximum <br />c/ Daily Maxi»wm <br />The discharge may be eligible for an uemption from this limitation :f it is demonstrated that the discharge occurred <br />as a result of precipitation (ess than or equal to the associated 10 year, 24 hour event. See permit, Part LB.I.dJ. <br />++ The discharge may be eligible far an exemption from this limitation if it is demonstrated that the discharge occurred <br />as a resuh of precipitation greater than the associated 10 year, 24 hour event. See permit, Part LB.I.dJ. <br />The perniiaee is encouraged to read the general rationale for art understanding of how this permit was devefoped and to <br />read the permit to see xfiat requirements exist. Within the body of the permit itself, monitoring requiremenu are specked <br />in Part I. B.3. aJ, the Stormwnter Management Plan requirements are specified in Part I. B. 2. and notification requiremenu <br />for e,~luent violations are addressed in Partll.A. <br />Salinity (TDS) monitoring ajthe discharge wiU be required, as shown in the table above. Phosphorus monitoring of <br />the discharge will not be required. <br />Certification: Based on the above information, Oabidge Energy it certified to discharge from the Carbon Juution Mine <br />under the general permit for coal mining, identified as permit number COG-850000. AU correspondence relative to this <br />facility should reference the specifu jaci[ity number, COG-850027. <br />Jon C. Kubic <br />May 7, 1997 <br />