Laserfiche WebLink
PART II <br />Page No. 9 <br />Permit No. COG-850000 <br />ALTERNATE LINIITATIONS FOR ACID OR FERRUGINOUS MINE DRAINAGE <br />(except as covered below under coal refuse piles or mountaintop removal) <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 /> <br />Parameter Limitations <br />30-Day <br />7-Day <br />Daily <br />Rationale Monitoring <br />Fre <br />uenc <br />1 Sample <br />T <br /> <br />Avg.. <br />Avg. <br />Max. q <br />y ype <br />____~________M____________~_Federal Effluent Limitation Guidelines--------------- ---_~~_______~_ <br />Total Suspended Solids, mg11 Report NA Report Federal ELG Weekly Grab <br />Total Manganese; mg/1 Report NA Report Federal ELG Weekly Grab <br />Total Iron, mg/1 <br />Existing Sources (before 5/4/84) Report NA 7.0 Federal ELG Weekly Grab <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, ml/] Report NA 0.5 Federal ELG Weekly Grab <br />Any discharge or increase in the volume of a dischazge 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 ofproofrequirements described in Part I.B.6. <br />`.. ~ Limitations <br />Parameter 30-Day ;; , ,7-Day Daily Rationale Monitoring Sample- <br />;'Avg. _ Avg:, Max.. Frequency :Type. <br />_______w__~_______________Federal Effluent Limitation Guidelines---______~__________________~ <br />Total Suspended Solids, mg/1 Report NA Report Federal ELG Weekly Grab <br />Total Manganese, mg/1 Report NA Report Federal ELG Weekly Grab <br />Total Iron, mg/1 <br />Existing Sources (before 5/4/84) Report NA Report Federal ELG Weekly Grab <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, ml/1 Report NA 0.5 Federal ELG 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 /> <br />` ~ <br />Parameter <br />Limitations <br />30-Day <br /> <br />7-Day <br /> <br />~ Daily <br />~ ~° ~ ~ ~ ~ ~~~ <br />Rationale <br />Monitoring <br />Fre <br />uenc <br />i ~. <br />Sample <br />T <br /> <br />Avg. <br />Avg. <br />Max. q <br />y <br />. ype <br />-----------------------------------Federal Effluent Limitation Guidelines-----------------_____ M~_____ <br />Total Suspended Solids, mg/1 Report NA Report Federal ELG Weekly Grab <br />Total Manganese, mg/1 Report NA Report Federal ELG Weekly Grab <br />Total Iron, mg/1 <br />Existing Sources (before 5/4/84) Report NA Report Federal ELG Weekly Grab <br />New Sources (after 5/4/84) Report NA Report <br />Settleable Solids, ml/1 Report NA Report Federal ELG Weekly Grab <br />• <br />