NPDES Permit No. IL0061247

Notice No. 5617c

Public Notice Beginning Date: October 13, 2010

Public Notice Ending Date: November 12, 2010

National Pollutant Discharge Elimination System (NPDES)

Permit Program

Draft Reissued and Modified NPDES Permit to Discharge into Waters of the State

Public Notice/Fact Sheet Issued By:

Illinois Environmental Protection Agency

Bureau of Water, Division of Water Pollution Control

Permit Section

1021 North Grand Avenue East

Post Office Box 19276

Springfield, Illinois 62794-9276

217/782-0610

Name and Address of Discharger: Name and Address of Facility:

Springfield Coal Company, L.L.C. Springfield Coal Company, L.L.C.

3008 Happy Landing Industry Mine

Springfield, IL 62711 5 miles Southwest of Industry, Illinois

(McDonough and Schuyler Counties)

The Illinois Environmental Protection Agency (IEPA) has made a tentative determination to issue an NPDES permit to discharge into

waters of the state and has prepared a draft permit and associated fact sheet for the above named discharger. The Public Notice 

period will begin and end on the dates indicated in the heading of this Public Notice/Fact Sheet. Comments will be accepted until 

the Public Notice period ending date indicated above, unless a request for an extension of the original comment period is granted by 

the Agency. Interested persons are invited to submit written comments on the draft permit to the IEPA at the above address. 

Commentors shall provide his or her name and address and the nature of the issues proposed to be raised and the evidence 

proposed to be presented with regards to those issues. Commentors may include a request for public hearing. The NPDES permit 

and notice number(s) must appear on each comment page.

The application, engineer's review notes, Public Notice/Fact Sheet, draft permit, comments received, and other documents are 

available for inspection and may be copied at the IEPA between 9:30 a.m. and 3:30 p.m. Monday through Friday when scheduled 

by the interested person.

As provided in Section 309.115(a) of the Act, any person may submit a request for a public hearing and if such written comments or 

requests indicate a significant degree of public interest in the draft permit, the permitting authority may, at its discretion, hold a public 

hearing. The Agency shall issue public notice of such hearing no less than thirty (30) days prior to the date of such hearing in the 

manner described by Sections 309.109 through 309.112 of the Act for public notice. The Agency's responses to written and/or oral 

comments will be provided in the Responsiveness Summary provided when the final permit is issued.

The applicant operates an existing surface mine (SIC 1221). Mine operations result in the discharge of acid mine drainage, alkaline 

mine drainage, reclamation area discharges and stormwater discharges.

Public comments are invited on the following proposed modifications incorporated into this renewal:

Permit is being transferred from Freeman United Coal Mining Company to Springfield Coal Company, L.L.C.

The incorporation of 18.2 additional acres to conduct surface mining activities.

The changing of reclamation area drainage points 020, 021, 022 and 027 to stormwater drainage points, the changing of 

alkaline mine drainage points 029 and 030 to reclamation area drainage points, and the release of stormwater drainage 

points 004, 005, 006, 007, 008, 010, 011 and 017.

The consideration of ponds 4 and 5 as small depressions within and adjacent to a post-mining land use of Forest, the 

consideration of pond 7 as a small depression within and adjacent to a post-mining land use of herbaceous wildlife and the 

consideration of pond 8 as small depression in and adjacent to a post mining land use of pasture.

Incorporation of Coal Combustion Waste (CCW) disposal previously approved under Subtitle D Permit Nos. 1997-MD-2392, 

1997-MD-2392-1, 1997-MD-2392-2, 1997-MD-2392-3, 1997-MD-2392-4 and 1997-MD-2392-5. 
Public Notice/Fact Sheet - Page 2 - NPDES Permit No. IL0061247

This facility has seventeen (17) existing discharges which are located in McDonough and Schuyler Counties, Illinois. The following 

information identifies the discharge points, receiving streams, and stream classifications:

Receiving Latitude Longitude Stream

Outfall Stream (North) (West) Classification

002 Unnamed tributary to 40° 17’ 45” 90° 43’ 07” General Use

Grindstone Creek

003 Unnamed tributary to 40° 18’ 00” 90° 43’ 15” General Use

Grindstone Creek

009 Willow Creek 40° 18’ 22” 90° 42’ 53” General Use

018 Unnamed tributary to 40° 17’ 40” 90° 43’ 49” General Use

Grindstone Creek

019 Unnamed tributary to 40° 17’ 55” 90° 44’ 06” General Use

Grindstone Creek

020 Unnamed tributary to 40° 17’ 45” 90° 44’ 47” General Use

Grindstone Creek

021 Unnamed tributary to 40° 17’ 43” 90° 45’ 06” General Use

Grindstone Creek

022 Unnamed tributary to 40° 17’ 17” 90° 45’ 13” General Use

Camp Creek

024W Willow Creek 40° 16’ 14” 90° 42’ 55” General Use

026 Willow Creek 40° 16’ 20” 90° 43’ 03” General Use

027 Willow Creek 40° 15’ 54” 90° 43’ 19” General Use

029 Unnamed tributary to 40° 16’ 22” 90° 45’ 08” General Use

Willow Creek

030 Unnamed tributary to 40° 16’ 16” 90° 44’ 51” General Use

Willow Creek

031 Unnamed tributary to 40° 18’ 11.5” 90° 43’ 33.6” General Use

Grindstone Creek

032 Unnamed tributary to 40° 18’ 11.5” 90° 43’ 10.6” General Use

Grindstone Creek

033 Unnamed tributary to 40° 18’ 24.5” 90° 43’ 01.9” General Use

Grindstone Creek

035 Unnamed tributary to 40° 17’ 46.8” 90° 42’ 55.9” General Use

Grindstone Creek

The stream segment DGIA-03 of Grindstone Creek receiving the flow from the unnamed tributaries into which Outfalls 002, 003, 

018, 019, 020, 021, 031, 032, 033 and 035 discharge is on the 2006 and the partially approved 2008 Illinois Integrated Water 

Quality Report and Section 303(d) list of impaired waters. The following parameters have been identified as the pollutants causing

impairment:

The following parameters have been identified as the pollutants causing impairment on the 2006 303(d) list:

Outfall Potential Causes Designated Uses

002, 003, 018 Aquatic Life Sulfates, Total Dissolved Solids

019, 020, 021

031, 032, 033

035
Public Notice/Fact Sheet - Page 3 - NPDES Permit No. IL0061247

The following parameters have been identified as the pollutants causing impairment on the 2008 303(d) list:

Outfall Potential Causes Designated Uses

002, 003, 018 Aquatic Life Sulfates

019, 020, 021

031, 032, 033

035

The stream segment DGZH of Willow Creek receiving the discharge from Outfalls 009, 024W, 026 and 027 is not on the 2006 or the 

partially approved 2008 303(d) list of impaired waters.

The stream segment DGZH of Willow Creek receiving the flow from the unnamed tributaries into which Outfalls 029 and 030 

discharge is not on the 2006 or the partially approved 2008 303(d) list of impaired waters.

The stream segment DGI-01 of Camp Creek receiving the flow from the unnamed tributary into which Outfall 022 discharges is not 

on the 2006 or the partially approved 2008 303(d) list of impaired waters.
Public Notice/Fact Sheet - Page 4 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 002

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Mercury Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2369 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2369 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2369 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2369 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County, in which Outfall 002 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 002, being approved prior to July 27, 1987, are subject to a 30-day average effluent limitation for Iron 

of 3.5 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 5 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 003

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Mercury Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 003 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 003, being approved prior to July 27, 1987, are subject to a 30-day average effluent limitation for Iron 

of 3.5 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 6 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 009, 018

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor 

Only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor 

Only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor 

Only

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor 

Only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.45 inches for Schuyler County and 4.93 inches for McDonough County in 

which Outfalls 009 and 018 are located, respectively.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfalls 009 and 018, being approved prior to July 27, 1987, are subject to a 30-day average effluent 

limitation for Iron of 3.5 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 7 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 024W, 026

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.45 inches for Schuyler County in which Outfalls 024W and 026 are 

located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfalls 024W and 026, being approved after July 27, 1987, are subject to a 30-day average effluent limitation 

for Iron of 3.0 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 8 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 031

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 813 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 813 500 Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 813 500 Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 813 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 031 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 031, being approved after July 27, 1987, are subject to a 30-day average effluent limitation for Iron of 

3.0 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 9 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 032

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 1950 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 1950 500 Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 1950 500 Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 1950 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 032 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 032, being approved after July 27, 1987, are subject to a 30-day average effluent limitation for Iron of 

3.0 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit
Public Notice/Fact Sheet - Page 10 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 033

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 916 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 916 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 916 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 916 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 033 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 033, being approved after July 27, 1987, are subject to a 30-day average effluent limitation for Iron of 

3.0 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 11 - NPDES Permit No. IL0061247

The alkaline mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 035

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 744 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 744 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 744 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 744 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 035 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for alkaline mine discharges are contained in 35 Ill. Adm. 

Code 406.110.

(3) Effluent standards for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 035, being approved after July 27, 1987, are subject to a 30-day average effluent limitation for Iron of 

3.0 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limit.
Public Notice/Fact Sheet - Page 12 - NPDES Permit No. IL0061247

The acid mine discharge from this facility shall be monitored and limited at all times as follows:

Outfall: 019

Discharge

Condition

Parameters

Total

Suspended Solids

(3)

(mg/l)

Iron (total)

(3) (4)

(mg/l)

pH

(3)

(S.U.)

Alkalinity/

Acidity

(3)

Sulfate

(1)

(mg/l)

Chloride

(mg/l)

Mn

(total)

(mg/l)

Hardness

(5)

Mercury Flow

(MGD)

Settleable

Solids

(2)

(ml/l) 30 day

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 1-year, 24-hours precipitation event, but less than or equal to the 10-

year, 24 hour precipitation event (or snowmelt or equivalent volume) shall comply with the indicated limitations instead of those 

in 35 Ill. Adm. Code 406.106(b). The 1-year, 24-hour precipitation event for this area is considered to be 2.79 inches for 

McDonough County in which Outfall 019 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in volume of a discharge caused by precipitation 

within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) shall comply 

with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour precipitation event for this 

area is considered to be 4.93 inches for McDonough County in which 019 is located.

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

(1) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).

(2) Settleable solids are monitored only as a result of a discharge due to precipitation events which exceed a predetermined 24-

hour duration or snowmelt total. Settleable solids effluent limitations for acid mine drainage discharges are contained in 35 Ill. 

Adm. Code 406.110(b), (c), and (d).

(3) Effluent limitations for mine discharges are contained in 35 Ill. Adm. Code 406.106.

(4) Discharges from Outfall 019, being approved prior to July 27, 1987, are subject to a 30-day average effluent limitation for Iron 

of 3.5 mg/l. Daily maximum effluent concentrations are calculated as twice the 30-day average.

(5) Hardness monitoring is required to determine the appropriateness of the sulfate permit limitation.
Public Notice/Fact Sheet - Page 13 - NPDES Permit No. IL0061247

The reclamation area discharges from this facility shall be monitored and limited at all times as follows:

Outfall(1): 029

Discharge

Condition

Parameters

pH

(S.U.)

Sulfate(2)

(mg/l)

Chloride

(mg/l) Hardness

Settleable

Solids

(ml/l)

I 6.5-9.0 500 500 Monitor

only 0.5

II 6.0-9.0 500 500 Monitor

only 0.5

III 6.0-9.0 500 500 Monitor

only -

IV 6.5-9.0 500 500 Monitor

only 0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.45 inches for Schuyler County in which Outfall 029 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

(1) Effluent limitations for reclamation area discharges are contained in 35 Ill. Adm. Code 406.109.

(2) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).
Public Notice/Fact Sheet - Page 14 - NPDES Permit No. IL0061247

The reclamation area discharges from this facility shall be monitored and limited at all times as follows:

Outfall(1): 030

Discharge

Condition

Parameters

pH

(S.U.)

Sulfate(2)

(mg/l)

Chloride

(mg/l) Hardness

Settleable

Solids

(ml/l)

I 6.5-9.0 826 500 Monitor

only 0.5

II 6.0-9.0 826 500 Monitor

only 0.5

III 6.0-9.0 826 500 Monitor

only -

IV 6.5-9.0 826 500 Monitor

only 0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24 hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.45 inches for Schuyler County in which Outfall 030 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

(1) Effluent limitations for reclamation area discharges are contained in 35 Ill. Adm. Code 406.109.

(2) Sulfate water quality standards and effluent limitations determined in accordance with 35 Ill. Adm. Code 302.208(h).
Public Notice/Fact Sheet - Page 15 - NPDES Permit No. IL0061247

The stormwater discharges from this facility shall be monitored and limited at all times as follows:

Outfall(1): 020, 021, 022, 027

Parameters

pH

(S.U.)

Settleable Solids

(ml/l)

6.0-9.0 0.5

(1) Stormwater effluent limitations for all Discharge Conditions are established pursuant to 40 CFR 122.26, and IEPA 

correspondence to the industry dated July 31, 1992, with sample frequency for stormwater discharges being once per year.

To assist you in identifying the location of the discharges, please refer to the attached map. The permit area for this facility is 

located in Sections 23, 24, 25, 26, 27, 28, 33, 34, 35 and 36, Township 4 North, Range 3 West, and Sections 19 and 30, Township 4 

North, Range 2 West, 4th P.M., McDonough County and Sections 2, 3 and 10, Township 3 North, Range 3 West, 4th P.M., Schuyler 

County, Illinois.



NPDES Permit No. IL0061247

Illinois Environmental Protection Agency

Division of Water Pollution Control

1021 North Grand Avenue, East

P.O. Box 19276

Springfield, Illinois 62794-9276

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM

Reissued and Modified NPDES Permit

Expiration Date: Issue Date:

Effective Date:

Name and Address of Permittee: Facility Name and Address:

Springfield Coal Company, L.L.C. Springfield Coal Company, L.L.C.

3008 Happy Landing Industry Mine

Springfield, IL 62711 5 miles Southwest of Industry, Illinois

(McDonough and Schuyler Counties)

Discharge Number and Classification: Receiving waters

002 Alkaline Mine Drainage Unnamed tributary to Grindstone Creek

Discharge from Preparation Plant

003 Surface Alkaline Drainage Unnamed tributary to Grindstone Creek

018 Alkaline Mine Drainage Unnamed tributary to Grindstone Creek

019 Surface Acid Mine Drainage Unnamed tributary to Grindstone Creek

020, 021 Stormwater Discharge Unnamed tributary to Grindstone Creek

009, 024W, 026 Surface Alkaline Drainage Willow Creek

022 Stormwater Discharge Unnamed tributary to Camp Creek

029, 030 Reclamation Area Drainage Unnamed tributary to Willow Creek

027 Stormwater Discharge Willow Creek 

In compliance with the provisions of the Illinois Environmental Protection Act, Subtitle C and/or Subtitle D Rules and Regulations of 

the Illinois Pollution Control Board, and the Clean Water Act, the above-named permittee is hereby authorized to discharge at the 

above location to the above-named receiving stream in accordance with the standard conditions and attachments herein.

Permittee is not authorized to discharge after the above expiration date. In order to receive authorization to discharge beyond the 

expiration date, the permittee shall submit the proper application as required by the Illinois Environmental Protection Agency (IEPA) 

not later than 180 days prior to the expiration date.

Ronald E. Morse, Manager

Mine Pollution Control Program

Bureau of Water

REM:LDC:jkb/5617c/09-07-10
Page 2

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 002t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

***

Mercury

see

Special

Condition

No. 14

Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-

9.0 Alk.>Acid 2369 500 1.0 Monitoronly

Monitor

Only

Measure

When

Sampling

-

II - - - -

6.0-

9.0 - 2369 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - -

6.0-

9.0 - 2369 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-

9.0 Alk.>Acid 2369 500 1.0 Monitoronly

Monitor

Only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 002 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the

discharges from Outfall 002 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t Discharge from Outfall 002 is subject to the requirements and limitations of Special Condition No. 15. 
Page 3

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 003t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

***

Mercury

see

Special

Condition

No. 14

Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

Only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

Only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 003 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the

discharges from Outfall 003 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 003 is subject to the requirements and limitations of Special Condition No. 15.
Page 4

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 009t, 018t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

***

Flow

(MGD) Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.45 inches for Schuyler County and 4.93 inches for McDonough County in 

which Outfalls 009 and 018 are located, respectively.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfalls 009 and 018 and Willow Creek and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfalls 009 and/or 018 is subject to the requirements and limitations of Special Condition No. 15.
Page 5

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 024Wt, 026t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

*** Flow

(MGD)

Settleable

Solids

30 day (ml/l)

Average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.45 inches for Schuyler County in which Outfalls 024W and 026 are 

located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the

discharges from Outfalls 024W and 026 and Willow Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 024W and 026 is subject to the requirements and limitations of Special Condition No. 15.
Page 6

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 031y (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

*** Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 813 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 813 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 813 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 813 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 031 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no 

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the

discharges from Outfall 031 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 031 is subject to the requirements and limitations of Special Condition No. 15.
Page 7

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 032t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

*** Flow

(MGD)

Settleable

Solids

30 day (ml/l

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 1950 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 1950 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 1950 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 1950 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 032 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 032 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 032 is subject to the requirements and limitations of Special Condition No. 15.
Page 8

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 033t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

*** Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 916 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 916 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 916 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 916 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 033 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 033 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 033 is subject to the requirements and limitations of Special Condition No. 15.
Page 9

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 035t (Alkaline Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

*** Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 744 500 1.0 Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 744 500 -

Monitor

only

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 744 500 -

Monitor

only

Measure

When

Sampling

-

IV 35 70 3.0 6.0 6.5-9.0 Alk.>Acid 744 500 1.0 Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(a), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour 

precipitation event for this area is considered to be 4.93 inches for McDonough County in which Outfall 035 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 035 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 035 is subject to the requirements and limitations of Special Condition No. 15.
Page 10

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 019t (Acid Mine Drainage)

Discharge

Condition

Parameters

Total

Suspended Solids

(mg/l)

***

Iron (total)

(mg/l)

***

pH**

(S.U.)

***

Alkalinity/

Acidity

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Mn

(total)

(mg/l)

***

Hardness

***

Mercury

see

Special

Condition

No. 14

Flow

(MGD)

Settleable

Solids

30 day (ml/l)

average

daily

maximum

30 day

average

daily

maximum

I 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

II - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

0.5

III - - - - 6.0-9.0 - 2000 500 -

Monitor

only -

Measure

When

Sampling

-

IV 35 70 3.5 7.0 6.5-9.0 Alk.>Acid 2000 500 1.0 Monitor

only

Monitor

only

Measure

When

Sampling

-

I Dry weather discharge (base flow or mine pumpage) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.110(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 1-year, 24-hour precipitation event, but less than or equal to the 10-

year, 24-hour precipitation event (or snowmelt or equivalent volume) shall comply with the indicated limitations instead of those 

in 35 Ill. Adm. Code 406.106(b). The 1-year, 24-hour precipitation event for this area is considered to be 2.79 inches for 

McDonough County in which Outfall 019 is located.

III In accordance with 35 Ill. Adm. Code 406.110(d), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.106(b). The 10-year, 24-hour precipitation 

event for this area is considered to be 4.93 inches for McDonough County in which Outfall 019 is located.

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For outfalls which have no

allowed mixing, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I 

to which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method.

*** There shall be a minimum of nine (9) samples collected during the quarter when the pond is discharging. Of these 9 samples, a 

minimum of one sample each month shall be taken during either Discharge Condition I or IV should such discharge condition occur. 

A "no flow" situation is not considered to be a sample of the discharge. In the event that Discharge Conditions II and/or III occur, 

grab sample of each discharge caused by the above precipitation events (Discharge Conditions II and/or III) shall be taken and 

analyzed for the parameters identified in the table above during at least 3 separate events each quarter. For quarters in which there 

are less than 3 such precipitation events resulting in discharges, a grab sample of the discharge shall be required whenever such 

precipitation event(s) occur(s). Should a sufficient number of discharge events occur during the quarter, the remaining three (3) 

quarterly samples may be taken during any of the Discharge Conditions described above.

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 019 and the unnamed tributary to Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

t

 Discharge from Outfall 019 is subject to the requirements and limitations of Special Condition No. 15. 
Page 11

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 029 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 500 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 500 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 500 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 500 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.45 inches for Schuyler County in which Outfall 029 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 029 and the unnamed tributary of Willow Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 12

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfall*: 030 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 826 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 826 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 826 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 826 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.45 inches for Schuyler County in which Outfall 030 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 030 and the unnamed tributary of Willow Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 13

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 002 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 2369 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 2369 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 2369 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 2369 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.93 inches for McDonough County in which Outfall 002 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 002 and the unnamed tributary of Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 14

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 003, 009, 018, 019, 024W, 026 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 2000 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 2000 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 2000 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 2000 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.45 inches for Schuyler County in which Outfalls 009, 024W and 026 are located and 4.93 inches for McDonough County in 

which Outfalls 003, 018 and 019 are located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not 

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfalls 003, 009, 018, 019, 024W and 026 and Willow Creek and the unnamed tributaries of Grindstone Creek 

receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 15

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 031 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 813 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 813 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 813 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 813 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.93 inches for McDonough County in which Outfall 031 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not 

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 031 and the unnamed tributary of Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 16

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 032 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 1950 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 1950 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 1950 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 1950 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.93 inches for McDonough County in which Outfall 032 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not 

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 032 and the unnamed tributary of Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 17

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 033 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 916 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 916 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 916 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 916 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.93 inches for McDonough County in which Outfall 033 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 033 and the unnamed tributary of Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 18

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition 9 and approval from the Agency, the effluent of the following discharge shall be monitored 

and limited at all times as follows:

Outfall*: 035 (Reclamation Area Drainage)

Discharge

Condition

Parameters

pH**

(S.U.)

***

Sulfate

(mg/l)

***

Chloride

(mg/l)

***

Hardness

***

Flow

(MGD)

Settleable

Solids

(ml/l)

***

I 6.5-9.0 744 500 Monitor

only

Measure

When

Sampling

0.5

II 6.0-9.0 744 500 Monitor

only

Measure

When

Sampling

0.5

III 6.0-9.0 744 500 Monitor

only

Measure

When

Sampling

-

IV 6.5-9.0 744 500 Monitor

only

Measure

When

Sampling

0.5

I Dry weather discharge (base flow, if present) from the outfall.

II In accordance with 35 Ill. Adm. Code 406.109(b), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period less than or equal to the 10-year, 24-hour precipitation event (or snowmelt or equivalent 

volume) shall comply with the indicated limitations. The 10-year, 24-hour precipitation event for this area is considered to be 

4.93 inches for McDonough County in which Outfall 035 is located.

III In accordance with 35 Ill. Adm. Code 406.109(c), any discharge or increase in the volume of a discharge caused by 

precipitation within any 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) 

shall comply with the indicated limitations instead of those in 35 Ill. Adm. Code 406.109(b).

IV Discharges continuing 24 hours after cessation of precipitation event that resulted in discharge. For reclamation area 

discharges, monitoring requirements and permit limitations of Discharge Condition IV are identical to Discharge Condition I to 

which the outfall discharge has reverted.

Sampling during all Discharge Conditions shall be performed utilizing the grab sampling method. A "no flow" situation is not

considered to be a sample of the discharge.

*** One sample per month (1/month) shall be collected if and/or when a discharge occurs under either Discharge Condition I, II or 

IV and analyzed for the parameters identified in the table above. In addition, at least three (3) grab samples shall be taken each 

quarter from separate precipitation events under Discharge Condition III and analyzed for parameters indicated in the above table. 

For quarters in which there are less than 3 such precipitation events, a grab sample of the discharge shall be required whenever 

such precipitation event(s) occur(s).

The water quality standards for sulfate and chloride must be met in discharges from the above referenced outfall as well as in the 

receiving stream.

_________________________________________________________________________________________________________

* The Permittee is subject to the limitations, and monitoring and reporting requirements of Special Condition No. 12 for the 

discharges from Outfall 035 and the unnamed tributary of Grindstone Creek receiving such discharges.

** No discharge is allowed from any above referenced permitted outfall during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.
Page 19

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

From the effective date of this Permit until the expiration date, the effluent of the following discharge shall be monitored and limited 

at all times as follows:

Outfalls: 020, 021, 022, 027 (Stormwater Discharge)

Parameters

pH*

(S.U.)

**

Settleable Solids

(ml/l)

**

6.0-9.0 0.5

Stormwater discharge monitoring is subject to the following reporting requirements:

Analysis of samples must be submitted with second quarter Discharge Monitoring Reports.

If discharges can be shown to be similar, a plan may be submitted by November 1 of each year preceding sampling to propose 

grouping of similar discharges and/or updated previously submitted groupings. If updating of a previously submitted plan is not 

necessary, a written notification to the Agency, indicating such is required. Upon approval from the Agency, one representative 

sample for each group may be submitted.

Annual stormwater monitoring is required for all discharges until Final SMCRA Bond is released and approval to cease such 

monitoring is obtained from the Agency.

________________________________________________________________________________________________________

* No discharge is allowed from any above referenced permitted outfalls during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

** One (1) sample per year shall be collected and analyzed for the indicated parameter; however, such sampling and analysis is 

required only if and/or when a discharge occurs from the individual Outfall(s) identified above.
Page 20

NPDES Coal Mine Permit

NPDES Permit No. IL0061247

Effluent Limitations and Monitoring

Upon completion of Special Condition No. 10 and approval from the Agency, the effluent of the following discharge shall be 

monitored and limited at all times as follows:

Outfalls: 002, 003, 009, 018, 019, 024W, 026, 029, 030, 031, 032, 033, 035 (Stormwater Discharge)

Parameters

pH*

(S.U.)

**

Settleable Solids

(ml/l)

**

6.0-9.0 0.5

Stormwater discharge monitoring is subject to the following reporting requirements:

Analysis of samples must be submitted with second quarter Discharge Monitoring Reports.

If discharges can be shown to be similar, a plan may be submitted by November 1 of each year preceding sampling to propose 

grouping of similar discharges and/or updated previously submitted groupings. If updating of a previously submitted plan is not 

necessary, a written notification to the Agency, indicating such is required. Upon approval from the Agency, one representative 

sample for each group may be submitted.

Annual stormwater monitoring is required for all discharges until Final SMCRA Bond is released and approval to cease such 

monitoring is obtained from the Agency.

________________________________________________________________________________________________________

* No discharge is allowed from any above referenced permitted outfalls during "low flow" or "no flow" conditions in the receiving 

stream unless such discharge meets the water quality standards of 35 Ill. Adm. Code 302.204 for pH.

** One (1) sample per year shall be collected and analyzed for the indicated parameter; however, such sampling and analysis is 

required only if and/or when a discharge occurs from the individual Outfall(s) identified above.
Page 21

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

Authorization is hereby granted to the above designee to construct and operate the mine and mine refuse area described as follows:

A surface mine containing a total of 4,548 acres (OMM Permit Nos. 16, 180, 261, 305, 334, 341 and 357), located in Sections 23, 

24, 25, 26, 27, 28, 33, 34, 35 and 36, Township 4 North, Range 3 West, and Sections 19 and 30, Township 4 North, Range 2 West, 

4

th P.M., McDonough County and Sections 2, 3 and 10, Township 3 North, Range 3 West, 4th P.M., Schuyler County, Illinois.

The operations consist of strip mining, coal processing, support facilities, refuse disposal areas, and surface drainage control 

facilities.

The addition of 18.2 acres, as described in Log No. 8225-10 (OMM Permit No. 357) located in the Northwest corner of the permit 

area. Surface runoff will be controlled by diversion ditches ‘B’ and ‘F’. A portion of existing ditch ‘B’ has been relocated and ditch ‘F’ 

is a new diversion ditch. An additional 9.68 acres of watershed will report to Pond 031 and 17.08 acres of watershed will report to 

Pond 033. Two (2) small temporary sediment ponds 031A and 033A, will be built to receive the surface runoff, via ditches ‘B’ and 

‘F’. The impoundments will have a rip rap principal and emergency spillway. Runoff from this area shall be monitored in 

accordance with the stormwater monitoring requirements of this permit.

As proposed in IEPA Log No. 6193-02 and previously approved in Agency correspondence dated September 18, 2003, reclamation 

area drainage points 004, 005, 006, 007, 008, 010 and 011 are hereby reclassified as stormwater discharge points and acid mine 

drainage points 020, 021 and 022 are hereby reclassified as reclamation area drainage points.

As proposed in IEPA Log No. 8080-10, reclamation area drainage points 020, 021, 022 and 027 are hereby reclassified as 

stormwater discharge points, alkaline mine drainage points 029 and 030 are hereby reclassified as reclamation area drainage 

points, and stormwater discharge points 004, 005, 006, 007, 008, 010, 011 and 017 are hereby released from the permit.

As proposed in IEPA Log No. 0385-08 (OMM Permit No. 16, ISR No. 57), ponds 4 and 5 are hereby considered small depressions 

within and adjacent to a post-mining land use of Forest. Pond 7 is hereby considered a small depression within and adjacent to a

post-mining land use of herbaceous wildlife. Pond 8 is hereby considered a small depression in and adjacent to a post mining land

use of pasture.

As proposed and described in IEPA Log No. 4184-04, the modifications to the diversion designs are approved.

The discharge structure design for the final lake cut located on the south side of OMM Permit No. 341 may be modified as proposed 

and described in IEPA Log No. 4526-04.

The status of Pond 22 is hereby changed from temporary to permanent, as proposed in IEPA Log No. 4527-04. 

As proposed and described in IEPA Log No. 3327-05, the final cut lake for Pit No. 4 is hereby revised to an incised final cut lake with 

an open channel. The spillway is a single spillway that will act as both the principle and emergency spillway.

A vehicle and equipment parking area within OMM Permit No. 357 boundary may be developed as proposed and described in IEPA 

Log No. 2223-06.

As proposed and described in IEPA Log Nos. 1112-07, 1112-07-A and 1112-07-B, the post-mining land use changes for OMM 

Permit No. 261 are hereby approved.

Surface drainage control at this facility consists of seventeen (17) sedimentation basins with discharges designated and located as 

indicated below:

Location and receiving stream of the outfall at this facility is as follows:

Outfall

Number

Latitude Longitude

DEG MIN SEC DEG MIN SEC Receiving Water

002 40° 17’ 45” 90° 43’ 07” Unnamed tributary to Grindstone Creek

003 40° 18’ 00” 90° 43’ 15” Unnamed tributary to Grindstone Creek

009 40° 18’ 22” 90° 42’ 53” Willow Creek

018 40° 17’ 40” 90° 43’ 49” Unnamed tributary to Grindstone Creek

019 40° 17’ 55” 90° 44’ 06” Unnamed tributary to Grindstone Creek

020 40° 17’ 45” 90° 44’ 47” Unnamed tributary to Grindstone Creek

021 40° 17’ 43” 90° 45’ 06” Unnamed tributary to Grindstone Creek
Page 22

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

Outfall

Number

Latitude Longitude

DEG MIN SEC DEG MIN SEC Receiving Water

022 40° 17’ 17” 90° 45’ 13” Unnamed tributary to Camp Creek

024W 40° 16’ 14” 90° 42’ 55” Willow Creek

026 40° 16’ 20” 90° 43’ 03” Willow Creek

027 40° 15’ 54” 90° 43’ 19” Willow Creek

029 40° 16’ 22” 90° 45’ 08” Unnamed tributary to Willow Creek 

030 40° 16’ 16” 90° 44’ 51” Unnamed tributary to Willow Creek

031 40° 18’ 11.5” 90° 43’ 33.6” Unnamed tributary to Grindstone Creek

032 40° 18’ 11.5” 90° 43’ 10.6” Unnamed tributary to Grindstone Creek

033 40° 18’ 24.5” 90° 43’ 01.9” Unnamed tributary to Grindstone Creek

035 40° 17’ 46.8” 90° 42’ 55.9” Unnamed tributary to Grindstone Creek

As previously described and depicted in IEPA Log No. 2392-96-A and 2392-96-B and previously approved under Subtitle D Permit 

No. 1997-MD-2392, an eight acre CCW disposal area located in Section 35, Township 4 North, Range 3 West, McDonough County, 

is hereby incorporated into this permit.

All shale, sandstone, and coal faces at the highwall will be sealed with compacted clay. No pit pumpage is permitted unless 

prior approval is obtained from the Agency. Adequate dust control measures will be implemented to prevent airborne material 

from leaving the disposal area. If dust cannot be adequately controlled, disposal activities shall cease until more favorable 

conditions exist or modified operating procedures are proposed and approved by this Agency.

As previously proposed in IEPA Log No. 1155-97 and approved under Subtitle D Permit No. 1997-MD-2392-1, Midwest GenerationPowerton Bottom Ash is approved as an additional source for the current disposal operation.

As previously proposed in IEPA Log No. 0368-98-A and approved under Subtitle D Permit No. 1997-MD-2392-2, a 10.4-acre slurry 

cell located in OMM Permit No. 16 is approved for CCW disposal as proposed in Log Nos. 6182-92 and 6182-92-A. The site is 

located in Section 26, Township 4 North, Range 3 West, McDonough County.

Pumpage from the disposal area will be directed to the closed loop water system of the preparation plant. All disposal 

operations associated with this disposal activity will be confined to a 13.6 acre area described in the application.

The eight acre CCW disposal area located in Section 35, Township 4 North, Range 3 West, McDonough County shall be 

relocated as depicted in IEPA Log No. 0283-98 (OMM Permit No. 16, IPR No. 37, Addendum No. 1). All shall, sandstone and 

coal fines at the highwall will be sealed with compacted clay. No pit pumpage is permitted unless prior approval is obtained

from the Agency.

As previously proposed in IEPA Log No. 9399-99 and approved under Subtitle D Permit No. 1997-MD-2392-3, Midwest GenerationPowerton (boiler slag) and Western Illinois University (fly ash/bottom ash mixture) are approved as additional sources for the current 

disposal operation.

As previously proposed in IEPA Log Nos. 8203-00 and 8203-00-A and approved under Subtitle D Permit No. 1997-MD-2392-4, 

Ameren CIPS-Meredosia (ponded ash) is approved as an additional source for the current disposal operation.

As previously proposed in IEPA Log Nos. 8312-00 and 8369-00 and approved under Subtitle d Permit No. 1997-MD-2392-5, 

Marshall Utilities and Chillicothe Municipal Utilities are approved as additional sources for the current disposal operation.

Groundwater monitoring at this facility consists of Monitoring Well Nos. UG-1, UG-2, DG-1, DG-2, DG-3, IDG, W-11, W-24, W-25, 

SP0800 and SP1200. Monitoring of wells at this facility shall be performed in accordance with Condition No. 12.

Three (3) groundwater monitoring wells designated 12, 13 and 14 will be removed from the monitoring requirements for this 

facility as proposed and described in IEPA Log No. 6182-02.

Seven (7) groundwater monitoring wells designated as W-05, W16, W17, W20, W21, W22 and W23 will be removed from 

the monitoring requirements for this facility as proposed and described in IEPA Log No. 9368-09 and approved in Agency 

correspondence dated November 30, 2009.
Page 23

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

Coal combustion waste sources approved for disposal are as follows:

Coal Combustion Waste Source Sample Frequency

ADM-Cedar Rapids (fly ash) Quarterly

ADM-Cedar Rapids (bed ash) Quarterly

ADM-Clinton Quarterly 

ADM-Decatur (fly ash) Quarterly

ADM-Decatur (bottom ash) Annual

ADM-Des Moines Quarterly

ADM-Peoria Quarterly

A.E. Staley Quarterly 

Ameren CIPS-Meredosia (ponded ash) Quarterly

American Cyanamid (fly ash/bed ash mixture) Quarterly

Aqualon Annual

Chillicothe Municipal Utilities Quarterly

CILCO-Edwards Quarterly

Grain Processing Corp.-Muscatine Quarterly

Illinois Power-Hennepin Quarterly

John Deere-East Moline Quarterly

Marshall Utilities Quarterly

Midwest Generation-Powerton (fly ash) Quarterly

Midwest Generation-Powerton (boiler slag) Quarterly

Millennium-Tuscola Quarterly

Pekin Energy Annual

University of Iowa (FBC) Quarterly

Western Illinois University (fly/bottom ash mixture) Quarterly

Coal Combustion Waste disposal approved herein shall be subject to the requirements of Condition No. 13.

In accordance with information provided in IEPA Log Nos. 1374-07-7 and 1374-07-A this permit is hereby transferred from Freeman 

United Coal Mining Company to Springfield Coal Company, L.L.C. 

This Construction Authorization supersedes and replaces Construction Authorization No. 0368-98, Supplemental Construction 

Authorization Nos. 0368-98-1, 0368-98-2, 0368-98-3 and 0368-98-4 and Subtitle D Permit Nos. 1997-MD-2392, 1997-MD-2392-1, 

1997-MD-2392-2, 1997-MD-2392-3, 1997-MD-2392-4 and 1997-MD-2392-5 previously issued for the herein permitted facilities.

The abandonment plan shall be executed and completed in accordance with 35 Ill. Adm. Code 405.109.

All water remaining upon abandonment must meet the requirements of 35 Ill. Adm. Code 406.202. For the constituents not covered 

by Parts 302 or 303, all water remaining upon abandonment must meet the requirements of 35 Ill. Adm. Code 406.106.

This Authorization is issued subject to the following Conditions. If such Conditions require additional or revised facilities, satisfactory 

engineering plan documents must be submitted to this Agency for review and approval to secure issuance of a Supplemental 

Authorization to Construct.

1. If any statement or representation is found to be incorrect, this permit may be revoked and the permittee thereupon waives all 

rights thereunder.

2. The issuance of this permit (a) shall not be considered as in any manner affecting the title of the premises upon which the mine 

or mine refuse area is to be located; (b) does not release the permittee from any liability for damage to person or property 

caused by or resulting from the installation, maintenance or operation of the proposed facilities; (c) does not take into 

consideration the structural stability of any units or parts of the project; and (d) does not release the permittee from compliance 

with other applicable statutes of the State of Illinois, or with applicable local laws, regulations or ordinances.

3. Final plans, specifications, application and supporting documents as submitted by the person indicated on Page 1 as approved 

shall constitute part of this permit and are located in the records of the Illinois Environmental Protection Agency.

4. There shall be no deviations from the approved plans and specifications unless revised plans, specifications and application 

shall first have been submitted to the Illinois Environmental Protection Agency and a supplemental permit issued.
Page 24

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

5. The permit holder shall notify the Environmental Protection Agency (217/782-3637) immediately of an emergency at the mine 

or mine refuse area which causes or threatens to cause a sudden discharge of contaminants into the waters of Illinois and shall 

immediately undertake necessary corrective measures as required by 35 Ill. Adm. Code 405.111. (217/782-3637 for calls 

between the hours of 5:00 p.m. to 8:30 a.m. and on weekends.)

6. The termination of an NPDES discharge monitoring point or cessation of monitoring of an NPDES discharge is not authorized 

by this Agency until the permittee submits adequate justification to show what alternate treatment is provided or that untreated 

drainage will meet applicable effluent and water quality standards.

7. Initial construction activities in areas to be disturbed shall be for collection and treatment facilities only. Prior to the start of 

other activities, surface drainage controls shall be constructed and operated to avoid violations of the Act or Subtitle D. At such 

time as runoff water is collected in the sedimentation pond, a sample shall be collected and analyzed, for the parameters 

designated as 1M through 15M under Part 5-C of Form 2C and the effluent parameters designated herein with the results sent 

to this Agency. Should additional treatment be necessary to meet the standards of 35 Ill. Adm. Code 406.106, a Supplemental 

Permit must be obtained. Discharge from ponds is not allowed unless applicable effluent and water quality standards are met 

in the basin discharge(s).

8. This Agency must be informed in writing and an application submitted if drainage, which was previously classified as alkaline

(pH greater than 6.0), becomes acid (pH less than 6.0) or ferruginous (base flow with an iron concentration greater than 10 

mg/l). The type of drainage reporting to the basin should be reclassified in a manner consistent with the applicable rule of 35 

Ill. Adm. Code 406 as amended in R84-29 at 11 Ill. Reg. 12899. The application should discuss the treatment method and 

demonstrate how the discharge will meet the applicable standards.

9. A permittee has the obligation to add a settling aid if necessary to meet the suspended solids or settleable solids effluent 

standards. The selection of a settling aid and the application practice shall be in accordance with a. or b. below

a. Alum (Al2(SO4)3), hydrated slime (Ca(OH)2), soda ash (Na2CO3), alkaline pit pumpage, acetylene production by-product 

(tested for impurities), and ground limestone are acceptable settling aids and are hereby permitted for alkaline mine 

drainage sedimentation ponds.

b. Any other settling aids such as commercial flocculents and coagulants are permitted only on prior approval from the 

Agency. To obtain approval a permitted must demonstrate in writing to the Agency that such use will not cause a violation 

of the toxic substances standard of 35 Ill. Adm. Code 302.210 or of the appropriate effluent and water quality standards of 

35 Ill. Adm. Code parts 302, 304, and 406.

10. A general plan for the nature and disposition of all liquids used to drill boreholes shall be filed with this Agency prior to any such 

operation. This plan should be filed at such time that the operator becomes aware of the need to drill unless the plan of 

operation was contained in a previously approved application. After settling, recirculation water which meets the requirements 

of 35 Ill. Adm. Code 406.106 and 406.202, may be discharged. The use of additives in the recirculation water which require 

treatment other than settling to comply with the Act will require a revised permit.

11. Any of the following shall be a violation of the provisions required under 35 Ill. Adm. Code 406.202:

a. It is demonstrated that an adverse effect on the environment in and around the receiving stream has occurred or is likely 

to occur.

b. It is demonstrated that the discharge has adversely affected or is likely to adversely affect any public water supply.

c. The Agency determines that the permittee is not utilizing Good Mining Practices in accordance with 35 Ill. Adm. Code 

406.204 which are fully described in detail in Sections 406.205, 406.206, 406.207 and 406.208 in order to minimize the 

discharge of total dissolved solids, chloride, sulfate, iron and manganese. To the extent practical, such Good Mining 

Practices shall be implemented to:

i. Stop or minimize water from coming into contact with disturbed areas through the use of diversions and/or runoff 

controls (Section 406.205).

ii. Retention and control within the site of waters exposed to disturbed materials utilizing erosion controls, 

sedimentation controls, water reuse or recirculation, minimization of exposure to disturbed materials, etc. (Section 

406.206).
Page 25

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

iii. Control and treatment of waters discharged from the site by regulation of flow of discharges and/or routing of 

discharges to more suitable discharge locations (Section 406.207).

iv. Utilized unconventional practices to prevent the production or discharge of waters containing elevated contaminant 

concentrations such as diversion of groundwater prior to entry into a surface or underground mine, dewatering 

practices to remove clean water prior to contacting disturbed materials and/or any additional practices demonstrated 

to be effective in reducing contaminant levels in discharges (Section 406.208).

12. Groundwater monitoring requirements for Well Nos. UG-1, UG-2, DG-1, DG-2, DG-3, IDG, W-11, W-24, W-25, SP0800 and 

SP1200 are as follows:

a. Ambient background monitoring shall be performed for all referenced wells. Such ambient monitoring shall consist of six 

(6) samples collected during the first year (approximately bi-monthly) following well installation but no later than during the 

first year of operation or disturbance to determine ambient background concentrations. Background monitoring shall 

include the following list of constituents:

Aluminum Fluoride Sulfate

Antimony Iron (dissolved) Thallium

Arsenic Iron (total) Total Dissolved Solids

Barium Lead Vanadium

Beryllium Manganese (dissolved) Zinc

Boron Manganese (total) pH

Cadmium Mercury Acidity

Chloride Molybdenum Alkalinity

Chromium Nickel Hardness

Cobalt Phenols Water Elevation

Copper Selenium

Cyanide Silver

b. Following the ambient monitoring as required under 12(a) above, routine monitoring shall continue on a quarterly basis as 

follows:

i. Monitoring Well Nos. UG-1, UG-2, DG-1, DG-2, DG-3 and IDG shall continue to be monitored quarterly for the 

parameters identified in 12(a) above.

ii. Monitoring Well Nos. W-11, W-24, W-25, SP0800 and SP1200 shall be monitored quarterly as required by 

IDNR/OMM for the following list of constituents:

Iron (dissolved) Hardness

Iron (total) Acidity

Manganese (dissolved) Aklalinity

Manganese (total) pH

Sulfate Water Elevation

Total Dissolved Solids

c. Following completion of active mining and reclamation, post-mining monitoring of the above referenced wells shall consist 

of six (6) samples collected during a 12-month period (approximately bi-monthly) to determine post-mining concentrations. 

Post-mining monitoring shall include the list of constituents identified in Condition 12(a) above.

d. Groundwater monitoring reports shall be submitted to the Agency in accordance with Special Condition Nos. 3 and 5 of 

this NPDES permit.

e. A statistically valid representation of groundwater quality required under Condition Nos. 12(a) and (c) above shall be 

submitted utilizing the following method. This method shall be used to determine the upper 95 percent confidence limit for 

each parameter listed above.

Should the Permittee determine that an alternate statistical method would be more appropriate based on the data being 

evaluated, the Permittee may request utilization of such alternate methodology. Upon approval from the Agency, the 

alternate methodology may be utilized to determine a statistically valid representation of background water quality.
Page 26

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

This method should be used to predict the confidence limit when single groundwater samples are taken from each 

monitoring (test) well.

 

i. Determine the arithmetic mean 

X b

of each indicator parameter for the sampling period. If more than one well is 

used, an equal number of samples must be taken from each well.

 

n

X X X

X

1 2 n

b

...

Where:

 

Xb

= Average value for a given chemical parameter

n

X = Values for each upgradient sample

n = the number of samples taken

ii. Calculate the variance (Sb

2

) and standard deviation (Sb) for each parameter using the values (Xn) from each sample 

of the well(s) as follows:

 

n 1

(X X ) (X X ) ... (X X )

S

2

b

n

2

b

2

2

b

1

b

2

2

Sb Sb

iii. Calculate the upper confidence limit using the following formula:

 

CL X b t 1 1/n Sb

Where:

CL = upper confidence limit prediction

(upper and lower limits should be calculated for pH)

t = one-tailed t value at the required significance

level and at n-1 degrees of freedom from Table 1

(a two-tailed t value should be used for pH)

iv. If the values of any routine parameter for any monitoring well exceed the upper confidence limit for that parameter, 

the permittee shall conclude that a statistically significant change has occurred at that well.

v. When some of the values are less than the Method Detection Limit (MDL), a value of one-half (1/2) the MDL shall be 

substituted for each value that is reported as less than the MDL. All other computations shall be calculated as given 

above.
Page 27

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

If all the values are less than the MDL for a given parameter, the Practical Quantitation Limit (PQL), as given in 35 Ill. 

Adm. Code Part 724 Appendix I shall be used to evaluate data from monitoring wells. If the analytical results from any 

monitoring well exceed two (2) times the PQL for any single parameter, or if they exceed the PQLs for two or more 

parameters, the permittee shall conclude that a statistically significant change has occurred.

Table 1

Standard t-Tables Level of Significance

 t-values t-values 

Degrees of freedom (one-tail) (two-tail)* 

 99% 95% 99% 95%

4 3.747 2.132 4.604 2.776

5 3.365 2.015 4.032 2.571

6 3.143 1.943 3.707 2.447

7 2.998 1.895 3.499 2.365

8 2.896 1.860 3.355 2.306

9 2.821 1.833 3.250 2.262

10 2.764 1.812 3.169 2.228

11 2.718 1.796 3.106 2.201

12 2.681 1.782 3.055 2.179

13 2.650 1.771 3.012 2.160

14 2.624 1.761 2.977 2.145

15 2.602 1.753 2.947 2.131

16 2.583 1.746 2.921 2.120

17 2.567 1.740 2.898 2.110

18 2.552 1.734 2.878 2.101

19 2.539 1.729 2.861 2.093

20 2.528 1.725 2.845 2.086

21 2.518 1.721 2.831 2.080

22 2.508 1.717 2.819 2.074

23 2.500 1.714 2.807 2.069

24 2.492 1.711 2.797 2.064

25 2.485 1.708 2.787 2.060

30 2.457 1.697 2.750 2.042

40 2.423 1.684 2.704 2.021

Adopted from Table III of "Statistical Tables for Biological Agricultural and Medical Research" (1947, R.A. Fisher and F. 

Yates).

* For pH only when required.

13. Coal Combustion Waste disposal approved for this facility shall be subject to the following:

a. American Cyanide ash shall be thoroughly mixed and incorporated with other ash sources during the disposal operation. 

This ash shall not exceed 10% of the total ash disposed during the quarter.

b. Fugitive dust from the coal combustion waste material shall not leave the disposal area. Timely covering, incorporation 

and/or wetting shall be utilized as necessary to protect exposed surfaces from wind erosion. If during the disposal 

operations such procedures do not sufficiently control fugitive dust, disposal activities shall cease until such time that 

more favorable conditions exist or modified operation procedures are proposed and approved by the Agency.

c. A quarterly report shall be submitted to the Agency containing a weighted composite analysis of all CCW sources 

disposed during the quarter. This report shall include an analysis of individual CCW sources as appropriate based on the 

noted sample frequency. This quarterly report shall also include an estimate of the volume of each individual coal 

combustion waste source disposed during the quarter. All analysis required herein shall be performed in accordance with 

Condition No. 13(d) below.
Page 28

NPDES Permit No. IL0061247

Construction Authorization No. 5362-03

C. A. Date: August 26, 2010

d. A Toxicity Characteristics Leaching Procedure (TCLP) analysis shall be conducted on representative samples of the 

individual CCW sources and of the weighted composite CCW samples for the following contaminants:

Antimony Cobalt Nickel

Arsenic Copper Phenols

Barium Iron Selenium

Beryllium Lead Silver

Boron Manganese Thallium

Cadmium Mercury Vanadium

Chromium Molybdenum Zinc

An appropriate leaching procedure shall be conducted for the following contaminants:

Chloride Fluoride

Cyanide Sulfate 

An appropriate laboratory analysis on a slurry paste shall include the following:

Acidity (CaCO3 Equivalents)

Alkalinity (CaCO3 Equivalents)

pH

Total Dissolved Solids

Net Neutralization Potential

Should a new or revised leachate test method be approved by U.S. Environmental Protection Agency, such methodology 

shall be utilized for coal combustion waste (CCW) analysis in lieu of TCLP analysis required above.

e. Quarterly CCW analyses reports shall be submitted to the Agency in accordance with Special Condition Nos. 3 and 5 of 

this NPDES permit.
Page 29

NPDES Permit No. IL0061247

Special Conditions

Special Condition No. 1: No effluent from any mine related facility area under this permit shall, alone or in combination with other 

sources, cause a violation of any applicable water quality standard as set out in the Illinois Pollution Control Board Rules and 

Regulations, Subtitle C: Water Pollution.

Special Condition No. 2: Samples taken in compliance with the effluent monitoring requirements shall be taken at a point 

representative of the discharge, but prior to entry into the receiving stream.

Special Condition No. 3: All periodic monitoring and reporting forms, including Discharge Monitoring Report (DMR) forms, shall be 

submitted to the Agency according to the schedule outlined in Special Condition No. 4 or 5 below with one (1) copy forwarded to 

each of the following addresses:

Illinois Environmental Protection Agency Illinois Environmental Protection Agency

Division of Water Pollution Control Mine Pollution Control Program

1021 North Grand Ave., East 2309 West Main Street, Suite 116

P.O. Box 19276 Marion, Illinois 62959

Springfield, IL 62794-9276

Attn: Compliance Assurance Section

Should electronic filing be available and elected for any periodic monitoring and reporting requirements, the Agency shall be notified 

via correspondence or e-mail at such time that the electronic filing has been completed.

Special Condition No. 4: Completed Discharge Monitoring Report (DMR) forms and stream monitoring results, shall be retained 

by the Permittee for a period of three (3) months and shall be mailed and received by the IEPA at the addresses indicated in Special 

Condition No. 3 above in accordance with the following schedule, unless otherwise specified by the permitting authority.

Period Received by IEPA

January, February, March April 28

April, May, June July 28

July, August, September October 28

October, November, December January 28

The Permittee shall record discharge monitoring results on Discharge Monitoring Report forms (DMR's) using one such form for 

each applicable Discharge Condition each month.

Special Condition No. 5: Completed periodic monitoring and reporting, other than DMR's and stream monitoring (i.e., groundwater 

monitoring, coal combustion waste analysis reports, etc.), shall be retained by the Permittee for a period of three (3) months and 

shall be mailed and received by the IEPA at the addresses indicated in Special Condition No. 3 above in accordance with the 

following schedule, unless otherwise specified by the permitting authority.

Period Received by IEPA

January, February, March May 1

April, May, June August 1

July, August, September November 1

October, November, December February 1

Special Condition No. 6: If an applicable effluent standard or limitation is promulgated under Sections 301(b)(2)(C) and (D), 

304(b)(2), and 307(a)(2) of the Clean Water Act and that effluent standard or limitation is more stringent than any effluent limitation 

in the permit or controls a pollutant not limited in the NPDES Permit, the Agency shall revise or modify the permit in accordance with 

the more stringent standard or prohibition and shall so notify the permittee.

Special Condition No. 7: The permittee shall notify the Agency in writing by certified mail within thirty days of abandonment, 

cessation, or suspension of active mining for thirty days or more unless caused by a labor dispute. During cessation or suspension 

of active mining, whether caused by a labor dispute or not, the permittee shall provide whatever interim impoundment, drainage 

diversion, and wastewater treatment is necessary to avoid violations of the Act or Subtitle D.

Special Condition No. 8: Plans must be submitted to and approved by this Agency prior to construction of a sedimentation pond. 

At such time as runoff water is collected in the sedimentation pond, a sample shall be collected and analyzed for the parameters 

designated as 1M-15M under Part 5-C of Form 2C and the effluent parameters designated herein with the results sent to this 

Agency. Should additional treatment be necessary to meet these standards, a Supplemental Permit must also be obtained. 

Discharge from a pond is not allowed unless applicable effluent and water quality standards are met.
Page 30

NPDES Permit No. IL0061247

Special Conditions

Special Condition No. 9: The special reclamation area effluent standards of 35 Ill. Adm. Code 406.109 apply only on approval 

from the Agency. To obtain approval, a request form and supporting documentation shall be submitted 45 days prior to the month 

that the permittee wishes the discharge be classified as a reclamation area discharge. The Agency will notify the permittee upon 

approval of the change.

Special Condition No. 10: The special stormwater effluent standards apply only on approval from the Agency. To obtain approval, 

a request with supporting documentation shall be submitted 45 days prior to the month that the permittee proposes the discharge to 

be classified as a stormwater discharge. The documentation supporting the request shall include analysis results indicating the 

discharge will consistently comply with reclamation area discharge effluent standards. The Agency will notify the permittee upon 

approval of the change.

Special Condition No. 11: Annual stormwater monitoring is required for all discharges not reporting to a sediment basin until Final 

SMCRA Bond is released and approval to cease such monitoring is obtained from the Agency.

a. Each discharge must be monitored for pH and settleable solids annually.

b. Analysis of samples must be submitted with second quarter Discharge Monitoring Reports. A map with discharge locations 

must be included in this submittal.

c. If discharges can be shown to be similar, a plan may be submitted by November 1 of each year preceding sampling to propose 

grouping of similar discharges and/or update previously submitted groupings. If updating of a previously submitted plan is not 

necessary, a written notification to the Agency indicating such is required. Upon approval from the Agency, one representative 

sample for each group may be submitted.

Special Condition No. 12: Sediment Pond Operation and Maintenance (Outfalls 002, 003, 009, 018, 019, 024W, 026, 029, 030, 

031, 032, 033 and 035):

a. For discharges resulting from precipitation events, in addition to the alternate effluent (Discharge Condition Nos. II and III) 

monitoring requirements, as indicated on the applicable effluent pages of this Permit, discharges from Outfalls 002, 003, 009, 

018, 019, 024W, 026, 029, 030, 031, 032, 033 and 035 shall be monitored and reported for Discharge Rate, Sulfate, Chloride 

and Hardness.

b. The following sampling and monitoring requirements are applicable to flow in Willow Creek and the unnamed tributaries to 

Grindstone Creek and Willow Creek which receive discharges from Outfalls 002, 003, 009, 018, 019, 024W, 026, 029, 030, 

031, 032, 033 and 035.

i. All sampling and monitoring required under 12(b)(ii) and (iii) below shall be performed during a discharge and monitoring 

event from the associated outfall.

ii. Willow Creek and the unnamed tributaries to Grindstone Creek and Willow Creek shall be monitored and reported 

quarterly for Discharge Rate, Chloride, Sulfate and Hardness downstream of the associated outfall. This downstream 

monitoring shall be performed a sufficient distance downstream of the associated outfall to ensure that complete mixing 

has occurred. At such time that sufficient information has been collected regarding receiving stream flow characteristics 

and in-stream contaminant concentrations the permittee may request a re-evaluation of the monitoring frequency required 

herein for possible reduction or elimination. For the purpose of re-evaluating the downstream monitoring frequency of the 

receiving stream, "sufficient information" is defined as a minimum of ten (10) quarterly sampling events.

In the event that downstream monitoring of the receiving waters is eliminated during the term of this permit based on an 

evaluation of the quarterly data, a minimum of three (3) additional samples analyzed for the parameters identified above 

must be submitted with the permit renewal application a minimum of 180 days prior to expiration of this permit.

iii. Willow Creek and the unnamed tributaries to Grindstone Creek and Willow Creek which receive the discharges from 

Outfalls 002, 003, 009, 018, 019, 024W, 026, 029, 030, 031, 032, 033 and 035 shall be monitored and reported annually 

for Discharge Rate, Chloride, Sulfate and Hardness upstream of the associated outfall.

Special Condition No. 13: Data collected in accordance with Special Condition No. (SCNO) above will be utilized to evaluate the 

appropriateness of the effluent limits established in this Permit. Should the Agency's evaluation of this data indicate revised effluent 

limits are warranted; this permit may be reopened and modified to incorporate more appropriate effluent limitations. This data will 

also be used for determination of effluent limitations at the time of permit renewal.
Page 31

NPDES Permit No. IL0061247

Special Conditions

Special Condition No. 14: Mercury shall be monitored quarterly until a minimum of ten (10) samples have been collected. 

Samples shall be collected and tested in accordance with USEPA 1631E using the option at Section 11.1.1.2 requiring the heating 

of samples at 50°C for 6 hours in a BrCl solution in closed vessels. This test method has a Method Detection Limit (MDL) of 0.001

ug/l. The results of such testing must be submitted with the quarterly Discharge Monitoring Reports (DMRs). The Permittee may 

submit a written request to the Agency to discontinue quarterly Mercury monitoring if the sampling results show no reasonable 

potential to exceed the Mercury water quality standard.

Special Condition No. 15: Schedule of Compliance with Manganese Effluent Limitations.

Project Description: Permittee shall achieve compliance with the effluent limitations for Manganese as follows: 

Phase I Research and Design Treatment System

Phase II Construct Treatment System

Phase III Initiate and Obtain Treatment

Operational level must be obtained by the completion date of Phase III. If no technology is identified which would allow Permittee to 

comply with the limit, the Permittee may apply to the Illinois Pollution Control Board for an adjusted standard or a site specific rule 

change.

Unless a site specific rule change has been granted, the Permittee shall achieve compliance with the manganese limits as specified 

in this permit for discharges from Outfall Nos. 002, 003, 009, 018, 019, 024W, 026, 031, 032, 033 and 035 by completion of the 

project described above in accordance with the following compliance schedule:

ITEM COMPLETION DATE

Phase I Progress Report April 1, 2011

Final Phase I Report July 1, 2011 

Phase II Progress Report January 1, 2012

Final Phase II Report April 1, 2012

Final Phase III Report October 1, 2012

Reporting

The permittee shall submit a report no later than fourteen (14) days following the completion dates indicated for each item in the 

compliance schedule, indicating, a) the date the item was completed, or b) that the item was not completed, unless otherwise 

specified by the permitting authority. All reports shall be mailed and received by the IEPA at the addresses indicated in Special 

Condition No. 3 above.