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Articles 6241 - 6270 of 52423
Full-Text Articles in Entire DC Network
Successful Practices To Accelerate Pond Closure With Beneficial Reuse Of Ccr, John Gartin, Dearl Tate, Tom Kierspe
Successful Practices To Accelerate Pond Closure With Beneficial Reuse Of Ccr, John Gartin, Dearl Tate, Tom Kierspe
World of Coal Ash Proceedings
Successful practices to accelerate pond closure with beneficial reuse of CCR Authors Mr. John Gartin - United States - Tetra Tech EC, Inc. Mr. Dearl Tate - United States - Tetra Tech EC, Inc. Mr. Tom Kierspe - United States - The SEFA Group, LLC Abstract Successful project implementation by the Duke Energy, SEFA Group, and Tetra Tech Team to achieve pond closure with beneficiation at the retired H.F. Lee Plant. Duke Energy is beneficially reusing ash from multiple basins at the site, providing a source of materials that helps cement producers meet their sustainability goals and compliance while ensuring …
Ccr Landfill Reclamation For Beneficial Use, Brian Owens
Ccr Landfill Reclamation For Beneficial Use, Brian Owens
World of Coal Ash Proceedings
CCR Landfill Reclamation for Beneficial Reuse – Lessons Learned and Practical Considerations Authors Mr. Brian Owens - United States - WSP USA Abstract It is not news that coal-fired power and the resulting coal combustion residual (CCR) generation is declining while the beneficial reuse demand remains strong. As this trend continues, energy companies are beginning to reclaim landfilled CCRs to supply the market with sellable-quality materials. Although reclaiming surface impoundment CCRs is also ongoing, reclamation of landfilled CCRs is expected to continue long after surface impoundments have been closed. The author will review lessons learned through reclaiming flue gas desulfurization …
Ccr Closure Cost Savings Through Nature-Based Solutions, John Watrous, Josh Running, Amanda Ludlow
Ccr Closure Cost Savings Through Nature-Based Solutions, John Watrous, Josh Running, Amanda Ludlow
World of Coal Ash Proceedings
Nature-based Solutions for CCR Closure Authors Mr. John Watrous - United States - Stantec Mr. Josh Running - United States - Stantec Ms. Amanda Ludlow - United States - Stantec Abstract Employing nature-based solutions (NbS) in CCR Unit closure can substantially reduce construction costs while supporting water treatment and management goals and investing in natural capital improvements. Real-world scenarios of natural capital development opportunities that support attaining carbon, biodiversity, and other environmental, social, and governance (ESG) goals are presented. Closure-by-Removal (CbR) is extremely expensive when compared to Closure-in-Place (CiP). The costs for CbR can be 400-1000% of CiP costs, which …
Navigating The Complexities Of Ccr Groundwater Assessment & Monitoring In Coastal Environments- A Technical Exploration, Stephen Wilson, Trenton Godwin, Kevin Stephenson
Navigating The Complexities Of Ccr Groundwater Assessment & Monitoring In Coastal Environments- A Technical Exploration, Stephen Wilson, Trenton Godwin, Kevin Stephenson
World of Coal Ash Proceedings
Navigating the Complexities of Coal Combustion Residual (CCR) Groundwater Assessment and Monitoring in Coastal Environments: A Technical Exploration Authors Mr. Stephen Wilson - United States - Resolute Environmental & Water Resources Consulting Mr. Trenton Godwin - United States - Resolute Environmental & Water Resources Consulting Mr. Kevin Stephenson - United States - Resolute Environmental & Water Resources Consulting Abstract Coastal environments pose distinctive challenges for the monitoring and assessment of Coal Combustion Residual (CCR) groundwater. Unlike their inland counterparts, coastal sites present complexities such as naturally-occurring brackish or saline groundwater containing elevated concentrations of Appendix III and IV constituents. These …
Construction And Mining Applications Of 60% - 100 % Portland Cement Replaced Ash-Based Concrete In South Africa, Cyril Attwell
Construction And Mining Applications Of 60% - 100 % Portland Cement Replaced Ash-Based Concrete In South Africa, Cyril Attwell
World of Coal Ash Proceedings
Construction and Mining applications of 60% - 100 % Portland cement replaced ASH-based concrete in South Africa Authors Mr. Cyril Attwell - South Africa - ARC Innovations Abstract Keywords: Alkali-activation, coal ash, shotcrete, ash stabilisation Abstract The growing adoption of AAM, (alkali-activated material), derived from coal combustion residue (coal ash), in international mining and construction industries stems from its adaptability to diverse project requirements. Key considerations include material application at extreme depths (4-5 km), exposure to rock temperatures exceeding 50°C, extended open time of mixed material (up to 30 days), high early strength, and effective energy absorption. Formulation challenges encompass …
Successful Beneficiation Strategies For Harvested Coal Ash Residuals (Ccr), Bill Fedorka
Successful Beneficiation Strategies For Harvested Coal Ash Residuals (Ccr), Bill Fedorka
World of Coal Ash Proceedings
Successful Beneficiation Strategies for Harvested Coal Ash Residuals (CCR) Authors Mr. Bill Fedorka, P.E. - United States - The SEFA Group, LLC Abstract The positive economic, environmental and technical benefits of utilizing coal ash as a replacement for cement in concrete has an extensive and successful history. However, the availability of current production coal ash for use as a supplementary cementitious material (SCM) in concrete has decreased dramatically. Harvested CCR from disposal and storage sites has proven to be a valuable resource. The SEFA Group has been beneficiating harvested coal ash on a commercial scale since 2015, and to date …
Tva Solar Installation On A Closed Ccr Unit, Steve Mayes, Kenneth Hughes, Shane Harris
Tva Solar Installation On A Closed Ccr Unit, Steve Mayes, Kenneth Hughes, Shane Harris
World of Coal Ash Proceedings
TVA Solar Installation on a Closed CCR Unit Authors Mr. Steve Mayes - United States - Watershed Geo Mr. Kenneth Hughes - United States - Watershed Geo Mr. Shane Harris - United States - TVA Abstract As the Tennessee Valley Authority (TVA) is endeavoring to reduce its carbon levels 80% by 2035 and aspiring to be net-zero by 2050, it is exploring the buildout of 1,000 Megawatts (MW) of renewable solar power on closed CCR units throughout the Tennessee Valley in a project known as Project Phoenix. To vet out this potential and push towards this robust solar initiative becoming …
Beneficially Using Bottom Ash As Landfill Protective Cover, Ryan Doyle
Beneficially Using Bottom Ash As Landfill Protective Cover, Ryan Doyle
World of Coal Ash Proceedings
The Overall Process of Beneficially Using Bottom Ash as Landfill Protective Cover, an Engineer’s Perspective Authors Mr. Ryan Doyle - United States - AECOM Abstract Using bottom ash as protective cover along the base of a landfill is one way to beneficially use coal combustion residuals (CCR). The bottom ash serves as a filter to prevent finer particles (e.g. fly ash) from clogging the geocomposite liner which transports leachate to the sump of the landfill cell. Understanding the gradation of the bottom ash and the material properties of the geocomposite are imperative to finding the right combination for an effective …
Post-Closure Responses In Groundwater Quality, Chris Lalonde, Jim Finley, Paul Thomas
Post-Closure Responses In Groundwater Quality, Chris Lalonde, Jim Finley, Paul Thomas
World of Coal Ash Proceedings
Post-closure - Responses in Groundwater Quality and Chemistry Authors Mr. Chris Lalonde - United States - Stantec Mr. Jim Finley - United States - Stantec Mr. Paul Thomas - United States - Tennessee Valley Authority Abstract Is there a meaningful and measurable improvement in groundwater quality following closure in place of a coal combustion residuals (CCR) unit by installation of a geosynthetic cover system? Using data collected at a closed CCR unit, we examined the response of pore water levels within the CCR material and groundwater quality along the downgradient edge of the CCR unit following closure in place that …
What The Phudge Is Going On, Alison O'Connor, Allie Wyman-Feravich, Shannon Zahuranec
What The Phudge Is Going On, Alison O'Connor, Allie Wyman-Feravich, Shannon Zahuranec
World of Coal Ash Proceedings
What the pHudge is Going On: Statistical and Geochemical Techniques for pH Alternative Source Demonstrations Authors Dr. Alison O'Connor - United States - Ramboll Dr. Allie Wyman-Feravich - United States - Life Cycle Geo, LLC Ms. Shannon Zahuranec - United States - Life Cycle Geo, LLC Abstract Regulation of wider lists of parameters which may trigger corrective action activities for coal combustion residuals units puts increasing weight on the importance of robust alternative source demonstrations (ASDs). Exceedances of pH, whether above or below a groundwater protection standard range, can be particularly challenging to attribute to alternative sources. We present the …
Sustainable Construction With Ccps - An Update For Europe -, Hans-Joachim Feuerborn, Fabrice Fayola
Sustainable Construction With Ccps - An Update For Europe -, Hans-Joachim Feuerborn, Fabrice Fayola
World of Coal Ash Proceedings
Sustainable construction with CCPs - an update for Europe - Authors Dr. Hans-Joachim Feuerborn - Germany - ECOBA Mr. Fabrice FAYOLA - France - Surschiste Abstract In Europe, the developments towards carbon neutrality by 2050 with impacts on fossil-fired production but also for construction materials and construction are finding it’s way. For fossil-fired energy and heat production this results in increased production by renewables and respectively discontinuous replacement production by coal power plants, and by this in availability issues for Coal Combustion Products (CCPs). For most member states phase-out dates have been published and some countries already phased-out. Although known …
Paper_Sustainable Construction With Ccps - An Update For Europe -, Fabrice Fayola, Joachim Feuerborn
Paper_Sustainable Construction With Ccps - An Update For Europe -, Fabrice Fayola, Joachim Feuerborn
World of Coal Ash Proceedings
In Europe, the developments towards carbon neutrality by 2050 with impacts on fossil-fired production but also for construction materials and construction are finding it’s way. For fossil-fired energy and heat production this results in increased production by renewables and respectively discontinuous replacement production by coal power plants, and by this in availability issues for Coal Combustion Products (CCPs). For most member states phase-out dates have been published and some countries already phased-out. Although known and used for decades, especially fly ash is subject of increasing interest for the production of carbon-reduced cement and concrete. The CCP production in coal-fired power …
Assessing Ccr Beneficiation Options For Pond Closures, Kelly Babichuk, Dale Evans
Assessing Ccr Beneficiation Options For Pond Closures, Kelly Babichuk, Dale Evans
World of Coal Ash Proceedings
Assessing CCR Beneficiation Options for CCR Pond Closures Authors Mr. Kelly Babichuk - United States - Ashcor Mr. Dale Evans - United States - RECON Abstract A fundamental tenet for waste regulation under RCRA was to reduce land disposal. Thus, the available provision for beneficial re-use of CCR using beneficiation processes represents a unique opportunity for utilities to off-set the life-cycle expense otherwise recognized for the associated regulatory liability tails. With the steadily declining production of fly ash, the increased prominence of using beneficiated ash has tremendous value across the construction industry. Specifically, single-source solutions have been developed that directly …
Fix Or Fight- Epa’S Part A And Part B Groundwater Deficiency Findings, Kevin Solie, Kaela Nerhus, Jim Aiken
Fix Or Fight- Epa’S Part A And Part B Groundwater Deficiency Findings, Kevin Solie, Kaela Nerhus, Jim Aiken
World of Coal Ash Proceedings
Fix or Fight: EPA’s Part A and Part B groundwater monitoring deficiency findings Authors Mr. Kevin Solie - United States - Barr Engineering Co. Ms. Kaela Nerhus - United States - Barr Engineering Co. Mr. Jim Aiken - United States - Barr Engineering Co. Abstract The EPA’s proposed and final CCR Rule Part A and Part B determinations are in essence denials, based largely on EPA’s evaluation of the adequacy of groundwater monitoring systems at the facilities. In almost all cases, EPA has found fault (often without accompanying supporting evidence) asserting various elements of the CCR Rule groundwater monitoring systems …
How Sustainable Is Your Coal Ash Cover System, Marc Theisen
How Sustainable Is Your Coal Ash Cover System, Marc Theisen
World of Coal Ash Proceedings
How Sustainable is Your Coal Ash Cover System? Authors Mr. Marc Theisen - United States - Profile Products LLC Abstract Robust cover designs are integral for successful coal ash closures to ensure regulatory compliance while minimizing construction, operational and maintenance costs. Moreover, owners, designers and other stakeholders must meet Environmental, Social and Governance (ESG) obligations. With these goals in mind, cover designs should include considerations for reducing greenhouse gas emissions and carbon footprints while offering environmental sustainability and resilience for the life of the project. A vexing issue facing coal ash site restoration is often the lack of available onsite …
Tricky Constituents- Issues With Leachate And Groundwater Constituents Of Concern, William Kennedy
Tricky Constituents- Issues With Leachate And Groundwater Constituents Of Concern, William Kennedy
World of Coal Ash Proceedings
Tricky Constituents – Issues with Leachate and Groundwater Constituents of Concern Authors Mr. William Kennedy - United States - Stantec Abstract Certain parameters in wastewater are more problematic to treat than others. Some constituents of concern such as arsenic and mercury are amenable to chemical precipitation, given the correct conditions. Others such as lithium, boron, and molybdenum are much more problematic – both in terms of cost and complexity. For waters from pump and treat systems that produce discharges to surface waters, it is important to correctly identify the appropriate discharge concentrations. Certain groundwater or leachate constituents of concern do …
Effectiveness Of Various Ccr Unit Closure Strategies, Cole Mayer, Pj Nolan, Mark Haney
Effectiveness Of Various Ccr Unit Closure Strategies, Cole Mayer, Pj Nolan, Mark Haney
World of Coal Ash Proceedings
Power utilities are increasingly challenged by regulatory agencies to implement remediation strategies that are able to anticipate long-term changes to groundwater quality in response to closure activities. However, unanticipated changes to site geochemistry during closure can have unforeseen impacts leading to groundwater impairments caused by leaching of coal combustion residual (CCR) constituents. In some cases, the cessation of recharge flux may even further inhibit the natural rehabilitation of a site by further shifting it from the pre-existing conditions. Here we present an evaluation of multiple closure scenarios where 3-D reactive geochemical modeling was used to evaluate constituent flux and concentration …
Demolition Of The Navajo Generating Station, Sunshine Pryor, Pete Everds, Michael O'Hare
Demolition Of The Navajo Generating Station, Sunshine Pryor, Pete Everds, Michael O'Hare
World of Coal Ash Proceedings
Demolition of the Navajo Generating Station Authors Ms. Sunshine Pryor - United States - Tetra Tech EC, Inc. Mr. Pete Everds - United States - Tetra Tech EC, Inc. Mr. Michael O'Hare - United States - Tetra Tech EC, Inc. Abstract Operation of the Navajo Generating Station (NGS), a 2,250 MW coal-fired power plant, in Northern Arizona ceased in 2019 with demolition starting soon after and restoration will be completed in early 2024. Decommissioning, decontamination, demolition and restoration (DDDR) activities included closure of the CCR landfill, closure of evaporation ponds and solid waste landfill, removal and disposal of the overhead …
Coal Ash Engineering: A Look Back At The Past And Peak Into The Future, Ramachandran Kulasingam
Coal Ash Engineering: A Look Back At The Past And Peak Into The Future, Ramachandran Kulasingam
World of Coal Ash Proceedings
Coal ash engineering has come a long way after jolted by the slide in Kingston in 2008 to closures of some of the largest and complex ash basins in the country underway in 2024. Research studies, field investigations, analyses, designs, dewatering, excavations, additional ash slides, and more forensic evaluations have all taken place. Engineering work has covered closures in place, closures by removal, hybrid closures, and landfills. Lessons have been learned, some forgotten, and some relearned. The merits of active versus passive dewatering, role of engineering in evaluating ash excavation stability versus pursuing a means and methods contractor experience approach, …
Improving Testing To Rapidly Identify High-Quality Pozzolanic, Lisa Burris, Prannoy Suraneni, Thomas Robl
Improving Testing To Rapidly Identify High-Quality Pozzolanic, Lisa Burris, Prannoy Suraneni, Thomas Robl
World of Coal Ash Proceedings
Improving Testing to Rapidly Identify High Quality Pozzolanic Supplementary Cementitious Materials Authors Dr. Lisa Burris - United States - The Ohio State University Dr. Prannoy Suraneni - United States - University of Miami Dr. Thomas Robl - United States - University of Kentucky Center for Applied Energy Research Abstract Coal ash has a long history of successful use in concrete mixtures as a pozzolanic material. Pozzolanic materials are aluminosiliceous or siliceous materials that participate in additional reactions with cement hydration products that densify the cementitious matrix and bind alkalis, increasing strength and durability of the concrete. However, with the reduction …
In Situ Remediation Of Multi-Metal Groundwater Plumes (Arsenic, Cobalt, Lithium, And Molybdenum)- Treatability Studies, Dimitri Vlassopoulos, Masa Kanematsu, Jason Stuckey, Grace Weatherford
In Situ Remediation Of Multi-Metal Groundwater Plumes (Arsenic, Cobalt, Lithium, And Molybdenum)- Treatability Studies, Dimitri Vlassopoulos, Masa Kanematsu, Jason Stuckey, Grace Weatherford
World of Coal Ash Proceedings
In Situ Remediation of Multi-Metal Groundwater Plumes (Arsenic, Cobalt, Lithium, and Molybdenum): Treatability Studies Authors Dr. Dimitri Vlassopoulos - United States - Anchor QEA Dr. Masa Kanematsu - United States - Anchor QEA Dr. Jason Stuckey - United States - Anchor QEA Ms. Grace Weatherford - United States - Anchor QEA Ms. Minna Carey - United States - Anchor QEA Abstract In situ injection for groundwater remediation at CCP sites could save millions of dollars compared to conventional technologies. Anchor QEA performed successful treatability studies with a wide range of reagents on groundwater samples from multiple sites with multiple constituents …
An Options Analysis –Final Waste Management, Breanne Kahnk, Todd Martin
An Options Analysis –Final Waste Management, Breanne Kahnk, Todd Martin
World of Coal Ash Proceedings
Final Waste Management Options Analysis Authors Ms. BreAnne Kahnk - United States - TRC Mr. Todd Martin - United States - TRC Abstract The recent trend of retiring coal-fired power plants in favor of gas-fired and renewable energy facilities has resulted in the need for a number of partially filled CCR landfills to be closed prematurely. In addition, forthcoming CCR rule changes designed to address legacy CCR material will be a driver for making additional closure decisions for many historical CCR landfills. The costs and labor burden associated with the long-term care of a prematurely closed or legacy CCR landfill …
Focused Constructability Review Process For Ash Pond Closures, Sean Rome
Focused Constructability Review Process For Ash Pond Closures, Sean Rome
World of Coal Ash Proceedings
Focused Constructability Review Process for Ash Pond Closures Authors Mr. Sean Rome - United States - Montrose Environmental Solutions Abstract CCR Impoundment Closures are large, complex remediation projects involving a complicated sequence of water management and material handling. Due to the nature and complexity of these projects, a traditional construction review may provide only nominal value to inform design, develop bid quality plans and specifications, and ultimately contribute to successful project execution. The Focused Constructability Review (FCR) process is a more detailed evaluation, performed from a different perspective, designed to identify and mitigate CCR project specific safety, environmental and construction …
Paper_The Occurrence Of Rare Earth Elements In South African Coal Ash- Identification And Characterisation, Nicola Wagner, Vhonani Rerani, Christopher Baiyegunhi, Sanki Biswas
Paper_The Occurrence Of Rare Earth Elements In South African Coal Ash- Identification And Characterisation, Nicola Wagner, Vhonani Rerani, Christopher Baiyegunhi, Sanki Biswas
World of Coal Ash Proceedings
The occurrence of rare earth elements in South African coal ash: identification and characterisation Authors Prof. Nicola Wagner - South Africa - University of Johannesburg Ms. Vhonani Rerani - South Africa - Mintek Prof. Christopher Baiyegunhi - South Africa - University of Limpopo Dr. Sanki Biswas - South Africa - University of Johnannesburg Ms. Happy Mabowa - South Africa - Mintek Abstract South Africa's coal-fired power generation results in significant amounts of ash. Coal ash is considered a potential secondary resource for rare earth elements (REEs). Thus, there is growing interest in researching the occurrence of REEs in South African …
Seismic Interferometry Technique For Characterization Of Loose Ccr Layers, Seda Gokyer Erbis, Allen Marr, Thomas Bardainne, Renaud Tarnus
Seismic Interferometry Technique For Characterization Of Loose Ccr Layers, Seda Gokyer Erbis, Allen Marr, Thomas Bardainne, Renaud Tarnus
World of Coal Ash Proceedings
Seismic Interferometry Technique for Characterization of Loose CCR Layers Authors Dr. Seda Gokyer Erbis - United States - Geocomp Inc Dr. Allen Marr - United States - Geocomp Inc Dr. Thomas Bardainne - France - Sercel Mr. Renaud Tarnus - France - Sercel Mrs. Ellen Money - United States - Tennessee Valley Authority Mr. Nicholas McClung - United States - Tennessee Valley Authority Mr. Matt Bishop - United States - Tennessee Valley Authority Mr. Jonathan Petsch - United States - Geocomp Inc Abstract The upcoming expansion of EPA’s coal combustion residuals (CCR) rule will have implications on CCR storage and …
Ongoing Novel Critical Metals Recovery From Coal Ash, Claudio Arato
Ongoing Novel Critical Metals Recovery From Coal Ash, Claudio Arato
World of Coal Ash Proceedings
Novel Critical Metals Recovery Techniques from Coal Ash Authors Mr. Claudio Arato - Canada - SonoAsh Abstract Abstract Summary This presentation will focus on the new and emerging areas of interest for SonoAsh. While Critical metals recovery has always been part of the SonoAsh process, this presentation will specifically focus on our new, patent pending methodology to extract Lithium ions from coal ash using a proprietary membrane grafting techniques developed in collaboration with Dr. Mohamad Al-Sheikhly’s at the University of Maryland, College Park. The technology is in the state of optimization and studies are being performed to determine the maximum …
Cutoff Walls For Groundwater Containment And Corrective Action, Dale Evans, Paul Schmall, Jeff Bean
Cutoff Walls For Groundwater Containment And Corrective Action, Dale Evans, Paul Schmall, Jeff Bean
World of Coal Ash Proceedings
Cutoff Walls for Groundwater Containment and Corrective Action Authors Mr. Dale Evans - United States - RECON Dr. Paul Schmall - United States - Keller Mr. Jeff Bean - United States - Keller Abstract With years of pond closure work already completed, there is a recent shift of focus that has been drawing significant attention to perimeter groundwater barriers for corrective action or for containing deep saturated ash below historic groundwater levels. The implementation of perimeter cut-offs is particularly challenging for CCR ponds because of the lack of space outside of these sites, the sensitive environment in which this work …
Design And Commissioning Of Coal Ash Filter Plant, James Keat, Jason Hamelehle, Casey Schmitt
Design And Commissioning Of Coal Ash Filter Plant, James Keat, Jason Hamelehle, Casey Schmitt
World of Coal Ash Proceedings
Design and commissioning of coal fly ash filter plant Authors Mr. James Keat - United States - Paterson & Cooke Mr. Jason Hamelehle - United States - Paterson & Cooke Mr. Casey Schmitt - United States - Paterson & Cooke Abstract Coal-fired power plants have come under stricter environmental regulations for their waste disposal with some requiring the stored fly ash slurry to not have any bleed water as measured by the paint filter test. Slurry at a solids concentration that passes this test is considered a paste by most definitions. Transporting this paste presents significant technical problems. Instead, some …
Low Carbon Concrete- Fair And Rapid Assessment Of Slowly Reacting Cement Concrete, Rod Jones
Low Carbon Concrete- Fair And Rapid Assessment Of Slowly Reacting Cement Concrete, Rod Jones
World of Coal Ash Proceedings
Fairly Assessing Slowing Reacting Cement for Low Carbon Concrete Authors Prof. Rod Jones - United Kingdom - University of Dundee Abstract Responding and reducing the climate emergency concrete construction must play a significant role worldwide. The main of most carbon-limiting technologies is to reduce the Portland clinker content to increasingly high levels, typically with secondary cementitious materials such as fly ash. While it may be possible to design such mixes for a particular strength there are implications for durability. Durability tests are carried out at the standard age of 28 days, however, fly ash is a slowly reacting cement and …
Pathways To Maximise Stored Coal Combustion Products (Ccps)- Partnership Between Nsw Government And Ash Development Association Of Australia, Craig Heidrich, Warren South
Pathways To Maximise Stored Coal Combustion Products (Ccps)- Partnership Between Nsw Government And Ash Development Association Of Australia, Craig Heidrich, Warren South
World of Coal Ash Proceedings
Pathways to maximise stored Coal Combustion Products (CCPS): Partnership between NSW Government and Ash Development Association of Australia Authors Mr. Craig Heidrich - Australia - Ash Development Association of Australia Dr. Warren South - Australia - Valkoviki Pty Ltd Abstract ABSRACT: With a background of accelerating change in the electricity market within New South Wales, forecast closures of all coal fired power stations is planned to occur by 2045 -- the issue of supply and management of coal combustion products, being a by-product of the combustion of coal within a coal fired powers station, has been identified as an emerging …