Location
Grand Rapids, Michigan
Start Date
15-5-2024 3:00 PM
End Date
15-5-2024 3:30 PM
Description
Evaluating Surface Impoundments Closure by Removal and Closure in Place Options Authors Mr. Rick Buffalini - United States - Civil & Environmental Consultants, Inc. Abstract The USEPA interpretation of the 2015 CCR Regulations is that closure in place requires that the CCR not be in contact with groundwater, that post-closure infiltration of groundwater from the subsurface be eliminated, and that free liquids be eliminated from the CCR. As a result, owners of surface impoundments that had previously intended to close in place are now evaluating other options to dewater the CCR or closure by removal. This presentation will address evaluations of closure by removal including siting, permitting and constructing a new landfill adjacent to or some haul distance from the surface impoundment. The siting and permitting addresses the requirements of both the USEPA regulations as well as state regulations including groundwater separation and other location restrictions. The costs of surface water management and leachate management systems are included. The evaluation includes the cost of relocating the CCR from the surface impoundment to the new landfill. The potential saturated condition of the CCR is addressed in the cost to excavate, transport and place the relocated CCR. Final closure of the new landfill and post-closure costs are also evaluated. Finally, the cost to close in place with CCR dewatering systems are compared to closure by removal costs.
Document Type
Event
Evaluating CCR Unit Closure Options – Closure in Place or Closure by Removal
Grand Rapids, Michigan
Evaluating Surface Impoundments Closure by Removal and Closure in Place Options Authors Mr. Rick Buffalini - United States - Civil & Environmental Consultants, Inc. Abstract The USEPA interpretation of the 2015 CCR Regulations is that closure in place requires that the CCR not be in contact with groundwater, that post-closure infiltration of groundwater from the subsurface be eliminated, and that free liquids be eliminated from the CCR. As a result, owners of surface impoundments that had previously intended to close in place are now evaluating other options to dewater the CCR or closure by removal. This presentation will address evaluations of closure by removal including siting, permitting and constructing a new landfill adjacent to or some haul distance from the surface impoundment. The siting and permitting addresses the requirements of both the USEPA regulations as well as state regulations including groundwater separation and other location restrictions. The costs of surface water management and leachate management systems are included. The evaluation includes the cost of relocating the CCR from the surface impoundment to the new landfill. The potential saturated condition of the CCR is addressed in the cost to excavate, transport and place the relocated CCR. Final closure of the new landfill and post-closure costs are also evaluated. Finally, the cost to close in place with CCR dewatering systems are compared to closure by removal costs.
