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---------------------Federal Effluent Limitation Guidelines-------------- _-- ___----- _ - -_.. <br />Total Suspended Solids, mg/I Report NA Report Federal ELG <br />Total Manganese, mg/1 Report NA Report Federal ELG <br />Total Iron, mg/I <br />Existing Sources (before 5/4/84) Report NA 7.0 Federal ELG <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, ml/1 Report NA 0.5 Federal ELG <br />ALTERNATE LIMITATIONS FOR ACID OR FERRUGINOUS MINE DRAINAGE <br />(except as covered below under coal refuse piles or mountaintop removal) <br />PART I <br />Page No. 9 <br />Permit No. COG - 850000 <br />Any discharge or increase in the volume of a discharge from an above ground mine (or underground mine where the <br />effluent is commingled with other categorical wastewater prior to discharge), caused by precipitation within any 24 <br />hour period less than or equal to the 2 -year, 24 -hour precipitation event (or snowmelt of equivalent volume) may <br />substitute the following limitations for these specific parameters only, subject to burden of proof requirements <br />described in Part I.B.6. <br />Weekly <br />Weekly <br />Grab <br />Grab <br />Weekly Grab <br />Weekly Grab <br />Any discharge or increase in the volume of a discharge from an above ground mine (or underground mine where the <br />effluent is commingled with other categorical wastewater prior to discharge), caused by precipitation within any 24 <br />hour period greater than the 2 -year, 24 -hour precipitation event, but less than or equal to the 10 -year, 24 -hour <br />precipitation event (or snowmelt of equivalent volume) may substitute the following limitations for these specific <br />parameters only, subject to burden of proof requirements described in Part I.B.6. <br />Total Suspended Solids, mg/1 <br />Total Manganese, mg/I <br />Total Iron, mg/1 <br />Federal Effluent Limitation Guidelines--------------------------- - - - - -- <br />Report NA Report Federal ELG <br />Report NA Report Federal ELG <br />Existing Sources (before 5/4/84) Report NA Report Federal ELG <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, m1/1 Report NA 0.5 Federal ELG <br />Weekly Grab <br />Weekly Grab <br />Weekly Grab <br />Weekly Grab <br />Any discharge or increase in the volume of a discharge from an above ground mine (or underground mine where the <br />effluent is commingled with other categorical wastewater prior to discharge), caused by precipitation within any 24 <br />hour period greater than the 2 -year, 24 -hour precipitation event, but greater than the 10 -year, 24 -hour precipitation <br />event (or snowmelt of equivalent volume) may substitute the following limitations for these specific parameters only, <br />subject to burden of proof requirements described in Part I.B.6. <br />------------------------ -- - - -- Federal Effluent Limitation Guidelines------------------- - - - - -- <br />Total Suspended Solids, mg/I Report NA Report Federal ELG <br />Total Manganese, mg/1 Report NA Report Federal ELG <br />Total Iron, mg/1 <br />Existing Sources (before 5/4/84) Report NA Report Federal ELG <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, rn1/1 Report NA Report Federal ELG <br />Weekly Grab <br />Weekly Grab <br />Weekly Grab <br />Weekly Grab <br />