The Only Problem with the Unencapsulated Beneficial Use Definition is the Word “Unencapsulated” In public debate over the best disposition of legacy coal ash (CCR), the phrase “uncapsulated beneficial use” is used. However, “uncapsulated” solutions, such as mixing loose CCR into soil or spreading large quantities as fill on construction sites without environmental safeguards, [...]
Slow Death of Cap-In-Place Over the years, methods to properly close legacy coal ash ponds (referred to “CCR units” by the EPA) have become a source of great debate. Most utilities have publicly stated that closure in place, commonly referred to “cap-in-place,” is a “safe and effective option” and it is being considered at a [...]
The 5 C’s of Legacy Coal Ash Beneficial Reuse When utilities are determining how to eliminate environmental hazards posed by legacy coal ash, the paramount goal should be to beneficially reuse much or all of it, if possible, with disposal being the last resort. We discussed methods of accomplishing this in Post 1: microencapsulation and [...]
Project Costs Matter When it comes to legacy CCR disposition (see Part 1), project costs need to be considered. The method deemed “most feasible” should not only reflect the science behind the decision, but also how project costs become a factor in the decision process. Whether a utility is regulated or not, costs passed on [...]
Three Solutions for Legacy Coal Ash Disposition When coal combustion residuals (CCR), such as coal ash, fly ash, bottom ash, gypsum and other solids produced by coal-fired power plants are improperly stored, they can contaminate surrounding soil and ground and surface water, causing a host of environmental problems. The most expedient way to deal with [...]
