Kentucky Utilities
Brown Station
April 26, 2017
Todd Hendricks, P.G.
Kentucky Division of Waste Management
Solid Waste Branch

 Inactive gypsum processing plant.

 

Pond at gypsum processing plant. The predecessor pond was considered a possible
source of groundwater pollution. It was clean-closed and lined as remedial measures.

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Pond at gypsum processing plant.

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Monitoring Well 

 

Monitoring Well MW-103,
installed pursuant to the
federal CCR Rule.

 

West Quarry, which was filled with soil and rock and vegetated to reduce
infiltration and potential groundwater flow into the Main Ash Pond / Landfill

 West Quarry, which was filled with soil and rock and vegetated to reduce
infiltration and potential groundwater flow into the Main Ash Pond / Landfill

 West Quarry, which was filled with soil and rock and vegetated to reduce
infiltration and potential groundwater flow into the Main Ash Pond / Landfill

 Waste being compacted in the landfill with a smooth roller. The landfill liner itself is intended to reduce
infiltration of water into the underlying Main Ash Pond Waste and the associated leaching of

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Auxiliary Pond. Looking north.

 

 

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Auxiliary Pond spillway.

 

 

Auxiliary Pond. Looking north.

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Solar generating facility. Looking south from Auxiliary Pond dam.



f-the federal CCR rule.

 

Power plant, looking north. HQ Inlet and Curd’s Inlet drainages are between
this point and the plant.

  

Auxiliary Pond dam.

 

 

Manhole for pipeline carrying Auxiliary Pond discharge to outfall to Curd?s Inlet.

 

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Manhole for pipeline carrying Auxiliary Pond discharge to outfallto Curd? IrIIet.

View inside manhole for pipeline carrying Auxiliary Pond discharge to outfall to
Curd?s Inlet.

 

iew inside manhole for pipeline carrying Auxiliary Pond discharge to outfall to
urd?s Inlet.

 

View inside manhole for pipeline carrying Auxiliary Pond discharge to outfall
to Curd?s Inlet.

 

 mc_v_oo._ .57: $830

 

 

Main Ash Pond toe drain cutoff wall wet well. Impoundment dam in
background.

 

 

 

Main Ash Pond toe drain cutoff wall wet well top slab.

Main Ash Pond toe drain cutoff wall wet well. Note sheen on water. This sheen
probably forms as a result of oxidation of reduced metals.

 Main Ash Pond toe drain
cutoff wall wet well. Note
sheen on water. This
sheen probably forms as a
result of oxidation of
reduced metals.

 Main Ash Pond toe
drain cutoff wall wet
well.

 



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Monitoring Well installed pursuant to the federal CCR rule.

 

 

Last manhole for pipeline from Auxiliary Pond before discharge to outfall to
Curd?s Inlet.

 

 

East Quarry. Note grayish discoloration of limestone.

Turtles in East Quarry.

 

Discharge of ef?uent from Auxiliary Pond to drainage way leading to Curd?s
Inlet.

 



 

 

 

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Paved road in Main Ash Pond Land?ll area.

Asphalt pavement in road
in Main Ash Pond / Landfill
area, between storm
water pond and leachate
pond.

 Leachat? pond. Leachate is pu: mped almost immediately to the Auxiliary Pond-.-

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\orm water pond_

Landfill containing waste. The black piles are bottom ash, which is emplaced
with each lift to form chimney drains to the leachate collection system.

 Landfill containing waste. The black piles are bottom ash, which is emplaced
with each lift to form chimney drains to the leachate collection system.

  

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Land?ll under construction.

 

Coal stockpile. This feature averages approximately 350 feet in width and
1000 feet in length. KU representatives indicated that the pile has no liner.

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Coal pile leachate pond on left. Water that drains from or comes in contact with coal (i.e., leachate)
flows into this unlined pond prior to being discharged to the Auxiliary Pond as a “uniquely associated

 Coal pile leachate pond. Water that drains from or comes in contact with coal flows
into this unlined pond prior to being discharged to the Auxiliary Pond as a “uniquely
associated waste” pursuant to 40 CFR 261.4(b).

  due to suspended particles of coa

 

Coal pile leachate pond.
Note black color due to
suspended particles of coal.
The suspended coal settles
out relatively rapidly, and
the color changes to shades
of brown, orange, and
yellow.

 Coal pile leachate pond. Note yellowish brown color of the leachate due to the
presence of oxidized iron.

 Coal pile leachate pond. Note yellowish brown color of the leachate due to the
presence of oxidized iron.

  

Spillway of coal pile leachate pond. Note the iron oxide precipitates.

Coal pile leachate pond. The leachate varied in color with location, with the more yellow
leachate

  

 

Coal pile on right. Looking south.

Google Earth image of power plant showing coal pile and coal pile leachate pond. Imagery
date 09-19-2016.

 Google Earth image showing coal pile
and coal pile leachate pond. Imagery
date 09-19-2016. Note yellow
precipitate in pond, adjacent to coal
pile. This probably reflects the
presence of iron (III) hydroxide. In acid
mine drainage (AMD) terminology, this
is known as “Yellow Boy”.
“Yellow Boy” forms from the oxidation
of iron sulfides, predominately pyrite
and marcasite (FeS2). Other sulfides
such as chalcopyrite (CuFeS2),
covellite (CuS), and arsenopyrite
(FeAsS) can be present in coal.
 
Various trace metals, including
selenium, may be present. According
to the US Office of Surface Mining,
Reclamation, and Enforcement,
“Selenium is a naturally occurring
widely distributed element, which
shows an affinity for sulfide minerals. It
combines with metals and non-metals
and may form both organic and
inorganic compounds. Selenium is the
most strongly enriched trace metal in

 Google Earth image of power plant showing coal pile and coal pile leachate pond.
Imagery date 10-09-2013. Note orange-brown color of leachate.