Advanced and Hybrid Closures of CCR Impoundments: Methods for Faster and Less Expensive Alternatives to Standard Clean Close and Cap in Place

摘要

The CCR rule has provided guidance for two closure options which include clean closure or removal of all CCR or a cap–in-place approach which leaves the material in place if specific criteria are met.Great Lakes Environmental & Infrastructure(Great Lakes E&I)has been working with several clients and technical groups to provide the technical approach and different dewatering applications on the final placement.Great Lakes E&I has a wide arsenal of very specific skill sets that allow for an advanced clean closure,up to two times faster than standard dig and haul proposals and to provide a hybrid closure which effectively clean closes a large section of the impoundment and places the removed dewatered CCR onto a stabilized platform of the remaining CCR impoundment.Both the”Advanced Closure”and”Hybrid Approach”will meet or exceed the CCR rules requirement and due to our vast capacity to move and dewater materials,Great Lakes E&I can significantly decrease closure time(advanced closure)and complete closure with significant cost reductions.The benefits are significant to the utility and to the local residents as most or all CCR materials will not leave the site for final disposition.This competitive effective approach(s)reduces risk to the populace from environmental impacts of dusting,spills and accidents by truck or rail.This approach also provides significant protection against public relations concerns and litigation due to environment impact outside of the utility property.Hybrid and Advanced CCR Pond closure(consolidated approach)is a very favorable approach to large CCR pond closures as some limited companies such as GL E&I possess the complete turnkey skillsets required to perform these specialized applications and sequenced steps for closure.This method significantly faster than a dig and haul proposition and will save significant money for the utility and rate payers.