The Kalp and Melcroft AMD p Abatement Projects Rich Beam P.G. PA - - PowerPoint PPT Presentation

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The Kalp and Melcroft AMD p Abatement Projects Rich Beam P.G. PA - - PowerPoint PPT Presentation

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The Kalp and Melcroft AMD p Abatement Projects Rich Beam P.G. PA DEP Bureau of Abandoned Mine Reclamation PA DEP Bureau of Abandoned Mine Reclamation 2008 AMR Conference State College, PA August 12 2008 August 12, 2008 Kalp & Melcroft

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The Kalp and Melcroft AMD p Abatement Projects

Rich Beam P.G.

PA DEP Bureau of Abandoned Mine Reclamation PA DEP Bureau of Abandoned Mine Reclamation 2008 AMR Conference State College, PA August 12 2008 August 12, 2008

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Kalp & Melcroft Kalp & Melcroft

  • The project involved two abandoned underground mine sites with

significant water quality and public health and safety problems. Melcroft #1 Mine (Kalp site) and the Melcroft #3 Mine (Melcroft site) Melcroft #1 Mine (Kalp site) and the Melcroft #3 Mine (Melcroft site)

  • Kalp site was a significant priority 2 health and safety hazard,

because of its impact to adjacent homes, properties and public p j , p p p highways and its potential for a mine pool blowout.

  • Melcroft site was inundating a number of basements and

damaging homes in the nearby Village of Melcroft

  • Remediation efforts at both sites relied on in-seam directional

d illi f ili l f h i l d ll i f h drilling to facilitate control of the mine pools and collection of the mine discharges.

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K l & M l ft Kalp & Melcroft

  • Problem Areas PA 2767 and PA 0429
  • Problem Areas PA 2767 and PA 0429
  • Project Start/Completion Dates: July 9, 2005 – October 2007
  • PROJECT PARTNERS:
  • PA-DEP Bureau of Abandoned Mine Reclamation
  • USDA Natural Resources Conservation Service
  • Mountain Watershed Association, Inc.

U S D O I Office of Surface Mining

  • U.S.D.O.I. Office of Surface Mining
  • Foundation for PA Watersheds
  • Local Landowners
  • Local Landowners
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Kalp & Melcroft Historical Perspective Kalp & Melcroft Historical Perspective

I 1924 M l ft C l

  • In 1924 Melcroft Coal

Company and other mining companies were enjoined and restrained from allowing AMD restrained from allowing AMD discharges into the upper Indian Creek Watershed by the Fayette County Court of Fayette County Court of Common Pleas.

  • The lawsuit was brought against the various coal companies by the

Pennsylvania Railroad and several private water companies

  • In order to comply with the court, the mining companies constructed a mine

drainage “flume” to collect and convey mine drainage. g y g

  • The seven-mile system, originally constructed with wooden flumes provided

connections to and between existing mine workings.

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Kalp Site Aerial View

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Kalp Waterfall: AMD Discharge AMD Discharge Impacting Nine Miles of Indian Creek

The Kalp opening was the mine discharge location prior to project The Kalp opening was the mine discharge location prior to project implementation and also the original starting point for the flume system.

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K l Di h fl i i t th i t f I di C k Kalp Discharge flowing into the main stem of Indian Creek

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M l ft Sit A i l Vi Melcroft Site Aerial View

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Melcroft Mine Pool Impacts Melcroft Mine Pool Impacts

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Melcroft Mine Pool Impacts Melcroft Mine Pool Impacts

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Background Background

P j t I l d d Project Included:

– Discharge Relocation Discharge Relocation – Vertical Drilling – Horizontal Borings – Mine Pool Dewatering and Treatment Mine Pool Dewatering and Treatment – Mine Pool Stabilization – Mine Pool Monitoring

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Background Background

Issues or Items for Consideration – Availability of accurate mine – Availability of accurate mine mapping – Mine pool water quality – stratification – Site geology / hydrogeology C diti f i ki – Condition of mine workings

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Background Background

Issues or Items for Consideration (continued) Hydrologic conditions within the mine – Hydrologic conditions within the mine – Surface and mineral ownership – Future treatment plans Receiving Stream Water Quality – Receiving Stream Water Quality – Permitting

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Mi P l D t i Mine Pool Dewatering

Issues or Items for Consideration (continued) – Treatment Requirements – Treatment Requirements

  • Availability of Land for Treatment

Chemical Choices

  • Chemical Choices
  • Sludge Handling

M it i

  • Monitoring
  • Costs

– Safety

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Needed to secure easements from landowners whose property will be Needed to secure easements from landowners whose property will be affected by project. There were six in original plan.

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

  • Drill pad constructed at the
  • Drill pad constructed at the

downdip cropline

  • Two 8- inch directional borings
  • Two 8- inch directional borings

through the coal seam

  • 60 feet of pressure grouted 12-

60 feet of pressure grouted 12 inch casing per drill hole

  • Exploratory vertical boreholes into the abandoned mine provided

target coordinates and served as injection wells for water target coordinates and served as injection wells for water encountered during Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

Directional Boreholes Drill Pad Drill Pad

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Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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Kalp & Melcroft Directional Drilling

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K l & M l ft Di ti l D illi Kalp & Melcroft Directional Drilling

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Kalp & Melcroft Kalp & Melcroft

  • Directional drilling relocated the current discharges to areas

proximal to the proposed (phase 2) treatment systems.

  • Provided a mechanism to lower mine pool hydraulic head and

was a lower cost and minimal disturbance alternative to the construction of overland mine drainage pipelines construction of overland mine drainage pipelines

  • Approximately 30 feet of mine pool hydraulic head was

gradually and permanently removed at both project sites gradually and permanently removed at both project sites

  • Substantially less disturbance to properties, homes and public

roads located between the discharge areas and the treatment roads located between the discharge areas and the treatment system locations.

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Kalp & Melcroft Chemical Treatment Kalp & Melcroft Chemical Treatment

  • After completion of drilling activities BAMR released

two contracts to dewater and chemically treat the Kalp and Melcroft mine pools and Melcroft mine pools.

  • The objectives were to

The objectives were to expeditiously address health and safety concerns and to aid in the design and aid in the design and construction of the phase 2 treatment projects.

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Kalp & Melcroft Chemical Treatment

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K l & M l ft Ch i l T t t Kalp & Melcroft Chemical Treatment

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K l & M l ft Ch i l T t t Kalp & Melcroft Chemical Treatment

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K l & M l ft Ch i l T t t Kalp & Melcroft Chemical Treatment

  • Kalp site: 80,655,000 gallons of

mine pool water treated using 201 012 gallons 20% Caustic Soda 201,012 gallons 20% Caustic Soda

  • Melcroft site: 48,630,000 gallons

f i l t t t d i

  • f mine pool water treated using

48,208 gallons 20% Caustic Soda

  • Total Treatment cost at Kalp Site = $209,286.00

Total Treatment cost at Kalp Site $209,286.00

  • Total Treatment Cost at Melcroft Site = $98,961.00
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Mine Pool Drawdown Kalp Site Mine Pool Drawdown Kalp Site

1475 1480

)

1465 1470

ation (ft)

1450 1455 1460

Eleva

1445 1450

3/1/2006 3/31/2006 5/1/2006 6/1/2006 7/1/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006

Date

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Kalp Site Raw Water Quality Kalp Site Raw Water Quality

1000 1480 800 900 1000 1475 1480

Acidity (mg/l) pool elevation

600 700 m g /l) 1465 1470 v a tio n 400 500 A c id ity (m 1460 P

  • l E

le v a 100 200 300 1450 1455

3/1/2006 5/31/2006 8/31/2006 12/1/2006 3/3/2007 6/3/2007

Date 1445

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Kalp Site Raw Water Quality Kalp Site Raw Water Quality

300 350

1475 1480

Iron (mg/l) Aluminum pool elevation 200 250

(m g/l)

1465 1470

tion

150 200

C

  • ncentration

1460 1465

Pool Elevat

50 100

1450 1455

3/1/2006 4/30/2006 6/30/2006 8/30/2006 10/30/2006 12/30/2006 3/1/2007 5/1/2007 7/1/2007

Date

1445

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STARTING TO DIG OUT THE PONDS STARTING TO DIG OUT THE PONDS

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Making Rapid Progress

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Wetlands at the Site: Wetlands at the Site: Mitigation—Sure Hope It Grows

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Grow—Grow—Grow!!!

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Complete! p

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Design Flow 600 GPM Influent Effluent pH 3.1 6.8 Acid 224 mg/l 0 mg/l Fe 40.2 mg/l 1.4 mg/l Fe 40.2 mg/l 1.4 mg/l Mn 2.9 mg/l 2.8 mg/l Al 11.5 mg/l 0.6 mg/l

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K l & M l ft Kalp & Melcroft

  • CONSTRUCTION COST (Phase 1):
  • CONSTRUCTION COST (Phase 1):
  • AML Funds - $ 658,248.00
  • USDA NRCS Funds - $ 446,480.00
  • Total Project Cost - $1,104,728.00
  • CONSTRUCTION COST (Phase 2 Kalp system):
  • AML Funds - $ 1,300,000.00
  • USDA NRCS Funds - $ 427,000.00
  • Total Project Cost - $1,727,000.00
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Questions?