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' • P~ I <br />Page lb of 19 <br />Permit No. CO-0000132 <br />• A. TERMS AND CONDITIONS <br />1. Effluent Limitations - Discharge points 007, 009, 010 and 012 (continued) <br />c) Alternate Limitations - Apply to outfalls 007, 009, 010 and 012 (continued) <br />Any discharge or increase in volume of a discharge caused by precipitation within <br />any 24-hour period greater Chen Che 10-veer. 24-hour event (or series of storms or <br />snowmelt of equivalent volume) ma comply with the following limitations subject <br />to burden of proof requirements described in Part I.A.2. <br />Flow, MCD - Monitoring only per Part I.B.1. <br />Total Dissolved Solids - Monitoring only per Part I.B.1. <br />pH, standard 41t~its (minimum-maximum): 6.5-9,0 J <br />Oil and Grease, mg/Y (No visible sheen): 10 J <br />d) Additional Conditions - effective at all times - Apply to outfalls 007, 009, 010 <br />and 012 ... <br />There shall be no discharge of floating solids or visible foam in other than trace <br />amounts. The discharge shall not contain any sanitary wastewaters from toilets or <br />related facilities, or other pollutants not associated with active mining <br />operations. There shall be no land application of wastewater, other than for dust <br />control, without the previous authorization of a specific discharge point. <br />• 2. Burden of Proof Requirements - Discharge points 007, 009, 010 and 012 <br />The permittee has the burden of proof when requesting relief from total suspended <br />solids (TSS), total iron and/or settleable solids (SS) limitations. <br />For rainfall. to waive TSS and total iron limitations, it is necessary to prove that <br />discharge occurred within 48 hours after measurable precipitation has stopped. In <br />addition, to waive settleable solids limitations, it is necessary to prove that <br />discharge occurred within 48 hours after precipitation greater than the LO-year, <br />24-hour event has stopped. <br />For snowmelt. to waive TSS and total iron limitations, it is necessary co prove chat <br />discharge occurred within 48 hours after pond inflow has stopped. In addition, co <br />waive settleable solids limitations, it is necessary to prove that discharge occurred <br />within 48 hours after pond inflow volume greater than the LO-year, 24-hour event has <br />stopped. <br />The Division shall determine the adequacy of proof, See Part I.B.3. <br />• See Part I.C. for Footnotes <br />Amendment 1 Issued 03/10/93 Effective 05/01/93 <br />Corrected n~i~sro_ <br />