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Articles 6271 - 6300 of 52423
Full-Text Articles in Entire DC Network
Attenuation Of Metals And Inorganics- Insights From Laboratory Testing Approaches, Larissa Smith, Michael Healey, Jeff Roberts, Allison Kreinberg
Attenuation Of Metals And Inorganics- Insights From Laboratory Testing Approaches, Larissa Smith, Michael Healey, Jeff Roberts, Allison Kreinberg
World of Coal Ash Proceedings
Natural Attenuation of Metals and Inorganics: Insights from Laboratory Testing Approaches Authors Ms. Larissa Smith - Canada - SiREM Mr. Michael Healey - Canada - SiREM Mr. Jeff Roberts - Canada - SiREM Ms. Allison Kreinberg - United States - Geosyntec Consultants, Inc. Ms. Crystal Wilson - United States - Geosyntec Consultants, Inc. Mr. Lane Dorman - United States - Geosyntec Consultants, Inc. Mr. Andrzej Przepiora - Canada - Geosyntec Consultants, Inc. Abstract Laboratory treatability studies can be used to evaluate and optimize groundwater treatment options for contaminants found at coal combustion residual (CCR) sites. An important consideration in groundwater …
Paper_Attenuation Of Metals And Inorganics: Insights From Laboratory Testing Approaches, Larissa Smith, Michael Healey, Jeff Roberts, Allison Krienberg
Paper_Attenuation Of Metals And Inorganics: Insights From Laboratory Testing Approaches, Larissa Smith, Michael Healey, Jeff Roberts, Allison Krienberg
World of Coal Ash Proceedings
Laboratory treatability studies can be used to evaluate and optimize groundwater treatment options for contaminants of concern (COCs) found at coal combustion residual (CCR) sites. An important consideration in groundwater treatment selection is the suitability of monitored natural attenuation (MNA) as a treatment component or as a stand-alone passive treatment. This presentation will focus on the use of treatability testing to evaluate natural and enhanced attenuation treatment options for redox sensitive metals in CCR-impacted groundwater. In one demonstration, a comprehensive laboratory program was performed based upon the USEPA’s tiered approach to identify the natural attenuation processes, rates, attenuation capacities, and …
Paper_A Study On The Applicability Of Dry Bottom Ash As A Fine Aggregate For Lightweight Aggregate Concrete, Sangchul Shin, Jinman Kim, Hoonsik Hong
Paper_A Study On The Applicability Of Dry Bottom Ash As A Fine Aggregate For Lightweight Aggregate Concrete, Sangchul Shin, Jinman Kim, Hoonsik Hong
World of Coal Ash Proceedings
While wet bottom ash has been used as a lightweight aggregate for a long time, Research on a dry bottom ash emitted from thermal power plants is insufficient. Dry bottom ash has the potential to be used as an excellent lightweight aggregate in the field of construction materials. This study was performed to verify the applicability of dry bottom ash as a fine aggregate in lightweight aggregate concrete. As a result of the study, it was found that the slump loss was not significant up to 75% of the dry bottom ash replacement rate, and the use of dry bottom …
Ash Basin Excavation Under Strict Orders – A Measured Approach, Mark Taylor, Evan Andrews, Longde Jin, Naveen Ganji
Ash Basin Excavation Under Strict Orders – A Measured Approach, Mark Taylor, Evan Andrews, Longde Jin, Naveen Ganji
World of Coal Ash Proceedings
Ash Basin Excavation Under Strict Orders – A Measured Approach Authors Mr. Mark Taylor - United States - WSP USA, Inc. Mr. EVAN ANDREWS - United States - Sequoia Services Mr. Longde Jin - United States - WSP USA, Inc. Mr. Naveen Ganji - United States - WSP USA, Inc. Abstract A heavy civil contractor in the Southeast US was hired by a major electric utility to restore two retired ash basins to their original condition using the closure-by-removal approach, a 46-acre basin and an 86-acre basin containing about 2.5 and 5 million tons of CCR, respectively. Both basins had …
Groundwater Corrective Action Implementation Issues, Jeremy Hurshman, Dennis Connair
Groundwater Corrective Action Implementation Issues, Jeremy Hurshman, Dennis Connair
World of Coal Ash Proceedings
Implementation Issues, Groundwater Corrective Action, Laramie River Station, Basin Electric Power Cooperative Authors Mr. Jeremy Hurshman - United States - AECOM Mr. Dennis Connair - United States - AECOM Abstract Groundwater monitoring of an ash pond and landfill complex at the subject site identified the presence of lithium and molybdenum at statistically significant levels (SSLs) above the site-specific groundwater protection standards (GWPSs). Groundwater impact in the sandstone aquifer was delineated and found to be limited to an area of less than 10 acres. An assessment of corrective measures (ACM) was conducted and a public meeting open to interested and affected …
Separation Process And Mechanism Of Lithium And Gallium By Microwave Enhanced Leaching Of High-Alumina Coal Ash, Shenyong Li, Qian Wang, Shuai Kang, Wei Pang
Separation Process And Mechanism Of Lithium And Gallium By Microwave Enhanced Leaching Of High-Alumina Coal Ash, Shenyong Li, Qian Wang, Shuai Kang, Wei Pang
World of Coal Ash Proceedings
Separation process and mechanism of lithium and gallium by microwave enhanced leaching of high-alumina coal ash Authors Dr. SHENYONG LI - China - Hebei University of Engineering Ms. Qian Wang - China - Hebei University of Engineering Mr. Shuai Kang - China - Hebei University of Engineering Ms. Wei Pang - China - Hebei University of Engineering Mr. Longlong Hao - China - Hebei University of Engineering Prof. Shenjun Qin - China - Hebei University of Engineering Abstract With the increasing demand and supply shortage of rare metals, fly ash may become an ideal alternative source for strategic key metals …
Trimble County Ccr Pond Closures, Steven Turner, John Williams, Jarrett Beach
Trimble County Ccr Pond Closures, Steven Turner, John Williams, Jarrett Beach
World of Coal Ash Proceedings
The Closure of the Gypsum Storage Pond (GSP) by Removal and Use as Fill in the Bottom Ash Pond (BAP) at the Louisville Gas and Electric (LG&E) Trimble Generating Station Authors Mr. Steven Turner - United States - Tetra Tech, Inc. Mr. John Williams - United States - Louisville Gas and Electric/Kentucky Utilities Mr. Jarrett Beach - United States - LG&E and KU Abstract The GSP was a 40-acre gypsum depository for two pulverized-coal-fired units with a capacity of 514 and 760 megawatts respectively at LG&E Trimble Generating Station. Approximately 1.5MM cubic yards (CY) of gypsum was deposited in the …
A Study On The Applicability Of Dry Bottom Ash As A Fine Aggregate For Lightweight Aggregate Concrete, Sangchul Shin, Jinman Kim
A Study On The Applicability Of Dry Bottom Ash As A Fine Aggregate For Lightweight Aggregate Concrete, Sangchul Shin, Jinman Kim
World of Coal Ash Proceedings
A Study on the Applicability of Dry Bottom Ash as a Fine Aggregate for Lightweight Aggregate Concrete Authors Dr. Sangchul Shin - Korea, Republic of - Eco-friendly Concrete Research Center, Kongju National University Dr. Jinman Kim - Korea, Republic of - Department of Green Smart Architectural Engineering, Kongju National University Dr. Hoonsik Hong - Korea, Republic of - Korea Power plant Byproduct Recycling Association Abstract While wet bottom ash has been used as a lightweight aggregate for a long time, Research on a dry bottom ash emitted from thermal power plants is insufficient. Dry ottom ash has the potential to …
Ccr Closure- Best Practices In Project Management Through The Construction Life Cycle, Glen Toepfer
Ccr Closure- Best Practices In Project Management Through The Construction Life Cycle, Glen Toepfer
World of Coal Ash Proceedings
CCR Closure: Best Practices in Project Management that Provide Asset Protection Throughout Each Stage of the Construction Life Cycle by Reducing Liabilities, Ensuring Quality and Expediting Regulatory Acceptance. Authors Mr. Glen Toepfer - United States - CQA Solutions Abstract CCR closure can be performed by clean closure through CCR removal and disposal or by closure in place methods. Regardless of the closure method being used, the construction process will have defined stages. The construction cycle begins at conception and seemingly culminates in the completion of either the fieldwork or the operational stage. However, the owner’s liability remains for up to …
Dewatering System Installation Methods For Ash Dewatering And Deep Depressurization, Christopher Gee, Paul Schmall, Shawn Coughlin, Christopher Jones
Dewatering System Installation Methods For Ash Dewatering And Deep Depressurization, Christopher Gee, Paul Schmall, Shawn Coughlin, Christopher Jones
World of Coal Ash Proceedings
Dewatering System Installation Methods for Ash Dewatering and Deep Depressurization- A Case Study Authors Mr. Christopher Gee - United States - Dominion Dr. Paul Schmall - United States - Keller Mr. Shawn Coughlin - United States - Keller Mr. Christopher Jones - United States - Haley & Aldrich Inc. Abstract Hydrogeologic conditions of this project require a multi-faceted approach to facilitate not only CCR dewatering but also deep depressurization of underlying highly permeable soils. Previous construction experienced significant and sustained groundwater inflows from beneath the ponded ash because the pond was built over the pre-existing river bed in braided stream …
Evaluating Monitored Natural Attenuation Paired With Source Control, Kelly Ferri, Craig Eady, Kathy Webb
Evaluating Monitored Natural Attenuation Paired With Source Control, Kelly Ferri, Craig Eady, Kathy Webb
World of Coal Ash Proceedings
Effective Remedial Measure: Evaluating Monitored Natural Attenuation Paired with Source Control Authors Mrs. Kelly Ferri - United States - SynTerra Corporation Mr. Craig Eady - United States - SynTerra Corporation Mrs. Kathy Webb - United States - SynTerra Corporation Abstract Monitored natural attenuation (MNA) coupled with source control is a viable component of remedial technologies evaluated under an assessment of corrective measures for coal combustion product (CCP) units with Appendix IV constituent concentrations greater than groundwater protection standards (GWPSs) downgradient of the waste boundary. To demonstrate the effectiveness of source control and MNA, groundwater data and geochemical conditions from four …
Lessons Learned From Landfill Construction Inside Former Ash Basins, John Bove
Lessons Learned From Landfill Construction Inside Former Ash Basins, John Bove
World of Coal Ash Proceedings
Lessons Learned from Landfill Construction Inside Former Ash Ponds Authors Mr. John Bove - United States - AECOM Abstract Lessons Learned from Landfill Construction Inside Former Ash Ponds John Bove1 1AECOM, 6000 Fairview Road, Suite 200, Charlotte NC 28210 KEYWORDS: Landfill, Ash Pond ABSTRACT Former ash pond sites can be good candidates for siting engineered landfills to place excavated ash from closure by removal sites and future production ash from power plants. For closure in place ash will need to be excavated within an area before building a landfill. These sites offer cost advantages over greenfield landfills such as hauling …
Design And Modeling To Dewater A Partially Composite-Covered Ash Pond, Michael Thornbrue
Design And Modeling To Dewater A Partially Composite-Covered Ash Pond, Michael Thornbrue
World of Coal Ash Proceedings
DESIGN AND MODELING TO DEWATER A PARTIALLY CLOSED ASH POND Authors Mr. Michael Thornbrue - United States - Atlas Technical Consultants Abstract An Electrical Power Supplier in the Midwest retained Atlas Technical Consultants (Atlas) to design a system to dewater a partially closed ash pond and predict its performance over a period of five (5) years. Prior to January 2022, the client began closure of the ash pond and completed installation of a composite cover over about 40% of the pond’s area. Atlas investigated the pond’s geology and concluded that the bottom and perimeter embankments consist of lean clay (k≈5x10‑8 …
Epa’S Value Engineering Approach For Gypsum Stack Closure, Michael Ayers, Craig Zeller
Epa’S Value Engineering Approach For Gypsum Stack Closure, Michael Ayers, Craig Zeller
World of Coal Ash Proceedings
EPA’s Value Engineering Approach for Gypsum Stack Closure Authors Mr. Michael Ayers - United States - Watershed Geo Mr. Craig Zeller - United States - US EPA Abstract In February 2017, US EPA Region 4 assumed responsibility for water treatment and daily operations for an unlined and open 350-acre gypsum stack located in Pascagoula, Mississippi. The gypsum stack contains approximately 15M cubic yards of phosphogypsum with elevated levels of nutrients and acidic pH. To the immediate east of the facility is one of the most biologically productive estuarine ecosystems in the Gulf of Mexico region. An uncontrolled and untreated release …
Build To Last- Innovations For Water And Waste Water Conveyance Using Geosynthetic Cementitious Composite Mats (Gccms) Henry Miller Irrigation District - A Case History, Nathan Ivy
World of Coal Ash Proceedings
Emerging technologies for water conveyance and containment Authors Mr. Nathan Ivy - United States - Concrete Canvas Abstract GCCM’s represent the newest class of geosynthetics that can be used for water conveyance and containment applications. Since their initial introduction nearly 15 years ago, ASTM D8364-Standard Specification for Geosynthetic Cementitious Composite Mats (GCCM) Materials has been developed as the internationally recognized standard for testing and classifying GCCM as Type I, II or III. All products discussed herein meet or exceed all aspects of this standard – regardless of type. These products combine both a concrete – hard armor – top surface …
Updating Your Asset Retirement Obligations, Ron Hager
Updating Your Asset Retirement Obligations, Ron Hager
World of Coal Ash Proceedings
ASSET RETIREMENT OBLIGATIONS: UPDATING YOUR AROS BASED ON THE PROPOSED LEGACY CCR SURFACE RULE Authors Mr. Ron Hager - United States - Burns & McDonnell Abstract On May 18, 2023, EPA proposed regulatory requirements for inactive surface impoundments at inactive facilities. This proposal responds to the 2018 U.S. Court of Appeals for the District of Columbia Circuit ruling that vacated the exemption for legacy CCR surface impoundments from the CCR regulations. The USEPA contends that Legacy CCR surface impoundments are more likely to be unlined and unmonitored, making them more prone to leaks and structural problems than units at facilities …
Reactive Transport Modeling Of Closure-In-Place With Intersecting Groundwater And Remedial Actions Part Ii, Bruce Hensel, Jason James, Olivia Paradis, Rachel Kelly
Reactive Transport Modeling Of Closure-In-Place With Intersecting Groundwater And Remedial Actions Part Ii, Bruce Hensel, Jason James, Olivia Paradis, Rachel Kelly
World of Coal Ash Proceedings
Reactive Transport Modeling of Closure-in-Place with Intersecting Groundwater and Remedial Actions: Part II, Results and Meaning Authors Mr. Bruce Hensel - United States - Electric Power Research Institute Dr. Jason James - United States - Exponent Dr. Olivia Paradis - United States - Exponent Dr. Rachel Kelly - United States - Exponent Dr. Walter McNab - United States - Exponent Abstract This EPRI research project was initiated to better understand two objectives: • How is mobility of inorganic constituents affected by the intersection of groundwater with coal combustion product ponds and landfills under varying geologic and redox conditions? • How …
From Stockpile To En450 Atritor And St Equipment & Technology Demonstrate Simultaneous Drying And Sizing Of Harvested Fly Ash With Carbon Reduction, Scott Coley, Doug Widener, Frank Hrach, Lewis Baker
From Stockpile To En450 Atritor And St Equipment & Technology Demonstrate Simultaneous Drying And Sizing Of Harvested Fly Ash With Carbon Reduction, Scott Coley, Doug Widener, Frank Hrach, Lewis Baker
World of Coal Ash Proceedings
Fly Ash Harvesting: Simultaneous Drying, Sizing, and Carbon Reduction Demonstration Authors Mr. Scott Coley - United Kingdom - Atritor Ltd. Mr. Doug Widener - United States - Titan America Mr. Frank Hrach - United States - ST Equipment & Technology LLC Mr. Lewis Baker - United States - ST Equipment & Technology LLC Mr. Andrew Rigg - United Kingdom - Atritor Ltd. Abstract With commercial interest in harvesting fly ash from legacy stockpiles growing rapidly in response to increased demand and lack of supply of freshly produced fly ash, two leading companies in the fields of drying/ sizing, and electrostatic …
A Decade Of Automated Instrumentation Data – A Tva Story, Nicholas Mcclung, Matt Bishop, Nicole Walker, Chris Jones
A Decade Of Automated Instrumentation Data – A Tva Story, Nicholas Mcclung, Matt Bishop, Nicole Walker, Chris Jones
World of Coal Ash Proceedings
A Decade of Automated Instrumentation Data – A TVA Story Authors Mr. Nicholas McClung - United States - Tennessee Valley Authority Mr. Matt Bishop - United States - Tennessee Valley Authority Mrs. Nicole Walker - United States - Tennessee Valley Authority Mr. Chris Jones - United States - Stantec Abstract Nicholas McClung PE1, Matthew Bishop PE2, Nicole Walker3, Christopher Jones PE4 1,2,3Tennessee Valley Authority, 1101 Market St Chattanooga TN 37402 4Stantec, 3052 Beaumont Circle, Lexington, KY 40513 Performance monitoring of Coal Combustion Residuals (CCR) facilities has been paramount to the success of Tennessee Valley Authority’s (TVA) structural stability governance and …
Advanced Synthetic And Concrete Revetment System For Ccr Closure Applications, Bradford Cooley, Randy Thompson
Advanced Synthetic And Concrete Revetment System For Ccr Closure Applications, Bradford Cooley, Randy Thompson
World of Coal Ash Proceedings
ADVANCED SYNTHETIC AND CONCRETE REVETMENT SYSTEM FOR CCR CLOSURE APPLICATIONS Authors Mr. Bradford Cooley - United States - WatershedGeo Mr. Randy Thompson - United States - Watershed Geo Abstract The Advanced Synthetic and Concrete Revetment System (ASCR) stands as a groundbreaking geosynthetic solution, designed to safeguard earthen structures from significant erosive hydraulic forces. It is a flexible, fiber-reinforced concrete revetment consisting of a high-friction geomembrane overlain by engineered synthetic turf which is infilled with a high strength concrete. Typical ASCR applications in Coal Combustion Residuals (CCR) Closure projects, are dam embankments, shorelines, spillways, steep downchutes, and stormwater perimeter channels. Evaluating …
High Resolution Site Characterization To Increase Corrective Action Efficiency, Kathryn Farris, Margaret Gentile, Geoff Gay
High Resolution Site Characterization To Increase Corrective Action Efficiency, Kathryn Farris, Margaret Gentile, Geoff Gay
World of Coal Ash Proceedings
High Resolution Site Characterization to Increase Corrective Action Efficiency Authors Ms. Kathryn Farris - United States - Arcadis US, Inc. Dr. Margaret Gentile - United States - Arcadis US, Inc. Mr. Geoff Gay - United States - Arcadis US, Inc. Abstract Many Coal Combustion Residuals (CCR) sites regulated under the 2015 CCR Rule are entering the stage of implementation of corrective actions for Appendix IV constituents. Often, the data describing Appendix IV impacts above Groundwater Protection Standards are limited to monitoring well data from the compliance monitoring well networks established for CCR rule assessment and detection monitoring. Traditional monitoring well …
It’S Here Now!, Mark Rokoff
It’S Here Now!, Mark Rokoff
World of Coal Ash Proceedings
IT’S HERE NOW! SUMMARIZING KEY ELEMENTS IN THE NEW LEGACY CCR SI RULE Authors Mr. Mark Rokoff - United States - Burns & McDonnell Abstract Subject to a formal consent decree, the EPA has agreed to issue the final Legacy CCR Surface Impoundment Rules (Legacy Rule) by May 6, 2024, following the recent publication of the proposed version of the same rule on May 18, 2023. The EPA is intent on completing the Legacy Rule further documenting their intent in the “Fall Unified Agenda” where it states that the rule will be finalized in April 2024. The Legacy Rule is …
Ucc’S Innovative Ccr Dewatering, Morgan French
Ucc’S Innovative Ccr Dewatering, Morgan French
World of Coal Ash Proceedings
An Innovative and Economical Approach To Ash Dewatering Authors Mr. Morgan French - United States - UCC Environmental Abstract This paper presents an innovative and cost-effective approach for fly ash dewatering that is specifically designed to address a major challenge in coal ash pond closure projects. Fly ash dewatering is particularly difficult because of its fine particle size, typically less than 40 microns, and its hydrophilic nature, which makes it difficult to separate from water. The new technique employs a combination of chemical treatment and mechanical dewatering to achieve a significant reduction of fly ash moisture content. The chemical treatment …
Ash Recovery From Stock - Issues To Consider Based On Experience In France, Loic Danest
Ash Recovery From Stock - Issues To Consider Based On Experience In France, Loic Danest
World of Coal Ash Proceedings
Ash recovery from legacy stock – issues to consider based on experience in France Authors Mr. Loic Danest - France - Societe Surschiste Abstract In the 90s, Surschiste commissioned two drying facilities. The initial objective of these facilities was to reuse conditioned ashes for summer delivery when the power plant was stopped, creating a sustainable market. Over the years, as production decreased, the dryers were used for ashes from historic stockpiles. The main purpose of this presentation is to report on the methodology used to achieve consistency in the performance of dried ashes used as supplementary cementitious material. The first …
Paper_Successful Installation Of A Vertical Hydraulic Barrier At A Ccr Impoundment During In Place Closure, Jim Edwards, Sylvain Payne-Gagnon
Paper_Successful Installation Of A Vertical Hydraulic Barrier At A Ccr Impoundment During In Place Closure, Jim Edwards, Sylvain Payne-Gagnon
World of Coal Ash Proceedings
Successful Installation of a Vertical Hydraulic Barrier at a CCR Impoundment During In-Place Closure Authors Mr. Jim Edwards - United States - Forgen Mr. Sylvain Payne-Gagnon - United States - Forgen Abstract Forgen was contracted to install a cut-off wall as part of a Vertical Hydraulic Barrier System that will encircle the ash consolidation area for a CCR impoundment undergoing closure in-place. Forgen’s scope of work included mix design, installation of a test section, sampling of the hardened test section, and installation of the cutoff wall. The hardened backfill was required to achieves: • Hydraulic Conductivity ≤ 1 x 10-7 …
Reactive Transport Modeling Of Closure-In-Place With Intersecting Groundwater And Remedial Actions Part I, Jason James, Olivia Paradis, Rachel Kelly, Walter Mcnab
Reactive Transport Modeling Of Closure-In-Place With Intersecting Groundwater And Remedial Actions Part I, Jason James, Olivia Paradis, Rachel Kelly, Walter Mcnab
World of Coal Ash Proceedings
Reactive Transport Modeling of Closure-in-Place with Intersecting Groundwater and Remedial Actions: Part I, Model Creation and Execution Authors Dr. Jason James - United States - Exponent Dr. Olivia Paradis - United States - Exponent Dr. Rachel Kelly - United States - Exponent Dr. Walter McNab - United States - Exponent Mr. Bruce Hensel - United States - Electric Power Research Institute Abstract This EPRI research project was initiated to better understand two objectives: • How is mobility of inorganic constituents affected by the intersection of groundwater with coal combustion product ponds and landfills under varying geologic and redox conditions? • …
Life After Coal- Opportunities And Challenges At Decommissioned Coal-Fired Power Sites, Leslie Miller, Brian Owens, Stacey Vanbelleghem
Life After Coal- Opportunities And Challenges At Decommissioned Coal-Fired Power Sites, Leslie Miller, Brian Owens, Stacey Vanbelleghem
World of Coal Ash Proceedings
LIFE AFTER COAL? OPPORTUNITIES AND CHALLENGES AT DECOMMISSIONED COAL-FIRED POWER SITES Authors Ms. Leslie Miller - United States - WSP USA Mr. Brian Owens - United States - WSP USA Ms. Stacey VanBelleghem - United States - Latham & Watkins, LLP Abstract With substantial regulatory and public pressures, coal fired power plants are being retired and decommissioned at an accelerated rate. What does the future look like for these expansive sites? Many of these sites may be suited for conversion to natural gas or other renewable energy sources such as solar or battery storage by their current owners, but others …
Visualization Tools To Enhance Conceptual Site Models Throughout The Project Life Cycle, Darby Litz, Jason House
Visualization Tools To Enhance Conceptual Site Models Throughout The Project Life Cycle, Darby Litz, Jason House
World of Coal Ash Proceedings
Visualization Tools to Enhance Conceptual Site Models Throughout the Project Life Cycle Authors Mrs. Darby Litz - United States - TRC Mr. Jason House - United States - TRC Abstract The conceptual site model (CSM) provides value throughout the life cycle of CCR Rule compliance, from detection and assessment monitoring to corrective action and post-closure attainment of Groundwater Protection Standards (GWPS). Frequently revisiting the CSM is advantageous to facilitate an understanding of site conditions and address the unique needs of the current project stage for relevant stakeholders. At the onset of the CCR Rule, the initial CSM development was particularly …
Data Collection, Assimilation And Reporting Methods To Support Pond Closure – A Case Study, Katherine Warwick (Coco), Joseph Keller, Kirkland Broadwell
Data Collection, Assimilation And Reporting Methods To Support Pond Closure – A Case Study, Katherine Warwick (Coco), Joseph Keller, Kirkland Broadwell
World of Coal Ash Proceedings
Data Collection, Assimilation and Reporting Methods to Support Pond Closure – A Case Study Authors Ms. Katherine (Kat) Warwick (Coco) - United States - Haley & Aldrich, Inc. Mr. Joseph Keller - United States - Haley & Aldrich Inc. Dr. Kirkland Broadwell - United States - Haley & Aldrich Inc. Abstract An automated “go/no-go” reporting system was developed for use by project stakeholders (Owner, Owner’s Engineer, Contractor, and contractor’s engineer) in support of a large ash pond closure in the mid-Atlantic. This reporting system not only documents compliance with the Construction Contractor’s Monitoring Plan (CCMP) and project specifications, but also …
Paper_Performance Of Engineered Turf Cover System Under Extreme Weather Conditions, Thomas Orzech, Bradford Cooley, Ming Zhu, Bryan Scholl
Paper_Performance Of Engineered Turf Cover System Under Extreme Weather Conditions, Thomas Orzech, Bradford Cooley, Ming Zhu, Bryan Scholl
World of Coal Ash Proceedings
The engineered turf final closure system (ClosureTurf®) is installed or awaiting installation on over 4,000 acres (1,619 hectares) of waste containment facilities including coal combustion residual (CCR) units, industrial and municipal solid waste landfills. A significant benefit of the engineered turf cover system over traditional soil covers is performance and resiliency under extreme weather conditions. The engineered turf cover system performs well during high rainfall intensities and/or high winds by protecting the containment facility from erosion or damage to the closure system and underlying subgrade/waste. This leads to measurable improvement in stormwater runoff quality and reduction in post-closure maintenance costs. …