Historical Power Plant Closures

Jim Lingle Senior Project Manager

EPRI Plant Closure WorkshopNovember 12, 2009

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Lakeside Power Plant

• 1921: began operation with 20 boilers

• 1968: converted to natural gas• 1983: plant decommissioned• 1985: property sold, demo began • 1994: Environmental Assessment• 1996: Soil Closure Report for

petroleum area, Addendum to Site Investigation Report, Capping Plan for ash area on northern parcel

• 1997 Groundwater monitoring plan

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Lakeside Power Plant

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Lakeside Property

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Lakeside Environmental Issues

• Asbestos• Lead paint• PCB impacted equipment• Petroleum in fuel storage and truck unloading area• Ash in ponds• Ash in northern parcel• Coal and ash on western T-line & trolley property• PAHs in sediments in pond• Bluff stabilization

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Solutions to Environmental Challenges

• Power plant foundation used as a licensed landfill for asbestos and demo debris

• Paint dried and disposed of as a solid waste• Oil-filled equipment tested for PCBs, drained and disposed of

according to regulations• Petroleum containing soils excavated• EPRI ROAM modeling of PAH behavior in groundwater• Well point samples in lake showed SO4 and B not above standards

(sulfate reducing bacteria)• PAH in pond sediments from Milwaukee Harbor• Ash relocated and used as structural fill for parking lot• Coal deposits burned at another plant• Negotiations, negotiations, negotiations

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Demolition of the Lakeside Turbine Room

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Developer’s Plan for Substation Area

Figure from: www.mandelgroup.com

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Current Conditions

Northern Area Power Plant

Southern Area Substation

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Port Washington Power Plant

• 1935-1950: 6 unit 341 MW plant

• 2003 Unit 4, 5 & 6 demolished

• 2004 Unit 1, 2, & 3 demolished

• Recycle– 22,000 tons of

structural steel– 3000 tons of

specialty metals– 12,000 tons of

concrete• Landfill

– <10% land filled

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Environmental Issues

• Wastewater treatment ponds• Coal pile runoff basins • Asbestos (siding, window glazing, roofing, stack coating,

etc.)• Lead paint flaking from metal• Oil filled equipment• PCBs (switch house sump and transformer yard)• Exit signs (tritium)• Chromium containing firebrick

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Environmental Issues

• Lab chemicals• Paint• Coal pile runoff • Coal dock abandonment• Regulatory limits

– PCBs <1 ppm in soil– Trace metals in wastewater

• Be <0.11 ug/l• Hg <1.3 ng/l

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Solutions

• NR 213 evaluation of wastewater treatment ponds– Geoprobe soil samples, piezometer, and surface water

• PCB pre-treatment system• PCB soil excavation - EPA Self-Implementing Cleanup• Trailer for temporary PCB equipment storage• Baker tanks/micron filter bags for treatment of asbestos

containing wastewater• Hazardous waste disposal of firebrick• Coal dock soil excavation, capping, stormwater control• Inspection, inspection, inspection

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Switchyard Cleanup

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Demolition of Coal Crusher House

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Unit 1 Complete (545 MW Gas-fired)

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Potential Plans for Public Use of Coal Dock

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Completed Two-Unit Gas-Fired Plant