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Between A Rock and a Hard Place

Thomas Foley, PE Environmental Manager Vulcan Materials, Northern Concrete Division. Environmental Issues Affecting the Ready-Mix Concrete Industry. Between A Rock and a Hard Place. Concrete. Environmental Issues. Fly Ash Jobsite Truck Cleaning New MDE Permit Leftover Concrete

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Between A Rock and a Hard Place

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  1. Thomas Foley, PE Environmental Manager Vulcan Materials, Northern Concrete Division Environmental Issues Affecting the Ready-Mix Concrete Industry Between A Rock and a Hard Place Concrete

  2. Environmental Issues • Fly Ash • Jobsite Truck Cleaning • New MDE Permit • Leftover Concrete • Sustainability

  3. Fly Ash • What is Fly Ash • Non-combustible portion of Coal • Collected from power plant exhaust • Is a pozzolan, makes concrete stronger, more durable • Increased workability and durability in concrete

  4. Fly Ash • Fly Ash has a beneficial use in concrete • Concrete is a beneficial reuse for Fly Ash • No need to landfill • Fly Ash becoming increasingly important with LEED and Green building programs • Use of a recycled product • Reduce the amount of cement

  5. Fly Ash • December 22, 2008 • Tennessee Valley Authority’s Kingston Fossil Plant in Roane County, Tennessee • 84 Acre solid waste containment area • 1.1 Billion Gallons fly ash slurry released • Spill covered 300 acres • Will take years to clean up • Costs upward of $1Billion

  6. Fly Ash • Incident has aroused the public • Strong lobby to increase regulations surrounding Fly Ash • Regulating this as a hazardous waste would effectively end the ability to reuse in concrete

  7. Jobsite Truck Cleaning • Clean truck prior to leaving job • Roadway hazard, material falling from truck • Focus from MDOT roadside inspections • Cleaner truck, fewer inspections? • Trucks are public image

  8. Jobsite Truck Cleaning

  9. Jobsite Truck Cleaning • We rely on the contractor • Location and maintenance of wash down facilities • Becomes part of storm water plan • We rely on our drivers • Train on what is ok and not ok • Get sales or operations involved if needed • Can leave a lasting image on the site

  10. New MDE Discharge Permit • New requirements • Toxicity testing of our discharge • New raw materials (admixtures) may trigger testing, or renewed testing • Approval process through MDE • Increased benefit to operating no-discharge • Tightening of discharge limits

  11. Leftover Concrete • Perishable product • Short window for usability • Short loads vs leftover • Reclaimers • Recycled concrete aggregates • Additional processing • Competition with traditional aggregates

  12. Sustainability • Meet the needs of the present without compromising the ability of future generations to meet their own needs • Environmental – Economic - Social • Energy conservation • Zero waste stream

  13. Sustainability • Recycle water • Need to recycle water – in fresh concrete • Conflicts with some spec’s, need to work on that • Reduce regulatory burden • Increase our use of recycled aggregates • Collecting data • Work on spec’s

  14. Questions?

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