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Case Studies
The following case studies have been submitted to the EPA and are intended to be illustrations of coal combustion product applications that the Agency believes can be beneficial to the environment. These include ash stabilized in cement and concrete that is used in buildings, bridges, dams and highways; and ash in potentially more sensitive, loose applications such as highway embankments, road beds, and agriculture. It is important to note that, while the Agency believes these case studies to be fair and accurate descriptions of successful coal combustion products, coal ash can vary widely in its physical and chemical characteristics. The products in which coal ash may be used should be assessed to ensure that they meet applicable environmental and engineering regulations and standards, as well as product and professional codes and specifications.
The Agency welcomes questions and comments about these case studies, as well as additional submissions for potential publication on this web site. These may be directed to John Sager (sager.john@epa.gov).You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.
Case Study 01: Lewis & Clark Fort Mandan Visitor Services Center (PDF) (1 pg, 70K)
Case Study 01A: Lewis & Clark Visitor Services Center (PDF) (2 pp, 154K)
Case Study 02: Fly Ash Sub-Grade Stabilization and PPC Optimization, Washburn Municipal Airport (PDF) (1 page, 68K)
Case Study 03: Fly Ash Concrete Design for Chicago's 100-Year Road Structure (PDF) (2 pp, 155K)
Case Study 04: Fly Ash for California's Olivenhain Dam (PDF) (2 pp, 144K)
Case Study 05: Carbon Burn-Out for Fly Ash Beneficiation (PDF) (1 pg, 66K)
Case Study 06: Sherburne EnviRock and EcoBlend (PDF) (1pg, 67K)
Case Study 07: Construction Fill Sand Production from Bottom Ash at Mill Creek Station (PDF) (2 pp, 111K)
Case Study 08: HVFA in the Madera Project - A Green & Profitable Residential Community Development (PDF) (2 pp, 163K )
Case Study 09: Evaluation of Water Quality Conditions Associated with the Use of Coal Combustion Products for Highway Embankments (PDF) (10 pp, 957K)
Case Study 10: Fly Ash for Highway Construction and Site Development (PDF) (20 pp, 1.1MB)
Case Study 11: Ash Fuel Reburn and Beneficiation at We Energies (PDF) (5 pp, 267K)
Case Study 12: Developments in Utilization of CCPs in Ohio (PDF) (13 pp, 635K)
Case Study 13: Re-Use of Clean Coal Technology By-Products in the Combustion of Low Permeability Liners (PDF) (206 pages, 3.1MB)
Case Study 14: Wisconsin Public Service Corporation Power Plant Foundation Evaluation (PDF) (5 pp, 100K)
Case Study 15: Waukesha County Airport/Crites Field Waukesha, WI: Full Depth Reclamation [FDR] – A Rehabilitation Option for Deteriorated Hot Mix Asphalt [HMA] Pavements (PDF) (6 pp, 112K)
Case Study 16: A Novel Way to Upgrade the Coarse Part of a High Calcium Fly Ash for Reuse Into Cement Systems (PDF) (12 pp, 1.9MB)
Case Study 17: Follow the “Green” Brick Road? Bricks Made From Coal-Fired Power Plant Waste Pass Safety Test (PDF) (2 pp, 364K)
Case Study 18: Rehabilitating Asphalt Highways: Coal Fly Ash Used on Ohio Full Depth Reclamation Projects (PDF) (4 pp, 654K)
Case Study 19: PRB Tech Notes: AmerenUE Teams with Charah and Home Depot to Market Ash for Concrete Mix (PDF) (2 pp, 480K)
Case Study 20: Aardelite Technology: Turning a Residue into a Building Material (PDF) (14 pp, 2,036K)
Case Study 21: High-Volume Use of High-Carbon Fly Ash for Highway Construction (PDF) (5 pp, 1,000K)