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PARTI <br />Page No. 8 <br />Permit No.: CO-0042161 <br />DEFIMTION OF EFFLUENT LIMITATIONS <br />5. Post-Mining Areas <br />Commencing at the time active mining has ceased and surface areas have been returned to the required contour all <br />applicable discharges may be eligible for limitations other than those specified in Part I.A.1. These post-mining <br />limitations shall remain in effect until bond release. The permittee shall notify the Division upon cessation of active <br />mining so that consideration of appropriate permit modifications can be made. <br />B. MONITORING REQUIREMENTS <br />1. Frequency and Sample Type <br />In order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified <br />in Part I.A.1, the permittee shall monitor all effluent parameters at the following frequencies. Such monitoring will <br />begin immediately and last for the life of the permit unless otherwise noted. The results of such monitoring shall be <br />reported on the Discharge Monitoring Report form (See Part I.E.). <br />a. Outfall 001 <br />. Parajiieter Monitorirrg'Frequency Sample Type <br />Flow, MGD Weekly Instantaneous <br /> or Continuous <br />Total Suspended Solids, mg/P Monthly Grab <br />Oil and Grease, mg/P Weekly Visual a/ <br />• <br />pH, s.u. (Minimum-Maximum) Weekly In-Sim <br />Total Dissolved Solids, mg/P Quarterly Grab <br />Total Ammonia as N, mg/P Montlily Grab <br />Total Recoverable Iron, mg/P Monthly Grab <br />Whole Effluent Toxicity, Chronic Quarterly 3 Composites/Test' <br />Lethality <br />The permittee may collect two composite samples when discharge is intermittent, with samples collected on <br />consecutive days of discharge. <br />b. Outfa11002 <br />Effluents eter - : ,;, Momtorirtg-Frequency - ~ a ~ ~ Sample ,Type, • > . , <br /> _ <br />Flow, MGD Weekly Instantaneous <br /> or Continuous <br />pH, s.u. (Minimum-Maximum) Weekly In-Situ <br />5-Day Biochemical Oxygen Monttily Grab <br />Demand (BODS), mg/P <br />Total Suspended Solids, mg/P Monthly Grab <br />Fecal Coliform, No./100 mP Monthly Grab <br /> <br />