Liberty Utilities closed the Asbury coal plant in spring of 2020. An impoundment is located at the former Asbury site for coal combustion residuals (CCR). As required by the Environmental Protection Agency's CCR Rule, this page provides information related to compliance, inspections and actions regarding the impoundment.
Coal combustion residuals are the materials that remain after pulverized coal is burned to generate electricity. There are several different types of materials produced including:
Fly Ash - a very fine, powdery material composed mostly of silica which "flies" up into the stack with flue gases and is removed by electrostatic precipitators and fabric filter baghouses.
Bottom Ash and boiler slag - coarse particles that are too large to be carried up into the stack, so they settle to the bottom of the combustion chamber.
Flue Gas Desulfurization Material (FGD) - a material leftover from the process of reducing sulfur dioxide emissions from a coal-fired boiler.
These materials have a wide range of beneficial uses in the construction, manufacturing, environmental remediation and other industries. Those not recycled for beneficial use are stored in utility impoundments.
2015 Asbury CCR Fugitive Dust Control Plan
2016 Asbury Annual CCR Inspection
2016 Asbury CCR - History of Construction
2016 Asbury CCR - Initial Hazard Potential Classification
2016 Asbury CCR - Initial Inflow Design Flood Control Plan
2016 Asbury CCR - Initial Safety Factor Assessment
2016 Asbury CCR - Initial Structural Stability Assessment
2016 Asbury CCR - Liner Design Criteria
2016 Asbury CCR Impoundment Closure
2016 Asbury CCR Impoundment Post Closure
2017 - Asbury - CCR Emergency Action Plan
2017 - Groundwater Certification CCR
2017 Asbury Annual CCR Inspection
2017 Groundwater Monitoring Annual Report CCR
2018 – CCR Annual Fugitive Dust Report
2018 Asbury Annual CCR Inspection
2018 Asbury CCR Impoundment Closure
2018 Asbury CCR Location Restriction
2018 Groundwater Monitoring Annual Report CCR
2019 Annual CCR Emergency Action Plan Review
2019 Annual Report - Asbury CCR Impoundment GW Sampling
2019 Asbury Annual CCR Inspection
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