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Operating Criteria for CCR Units


 

 

The CCR Rule establishes operating criteria that address the day-to-day operations of CCR landfills and surface impoundments to reduce the risk of human health and environmental impacts from CCR units. The operating criteria include air criteria and periodic inspections for all CCR units, run-on and run-off controls for CCR landfills and hydrologic and hydraulic capacity requirements for CCR surface impoundments.

 

Air Criteria (40 CFR 257.80)

The air criteria addresses air pollution from fugitive CCR dust and requires owners and operators to minimize airborne CCR at the facility. Owners and operators are required to prepare a CCR fugitive dust control plan that identifies and describes dust control measures which must include procedures to emplace CCR as conditioned CCR (watering). The plan must also address procedures for logging citizen complaints related to CCR dust, as well as procedures to assess the effectiveness of the plan. For existing CCR units, the initial plan was due on October 19, 2015; for new CCR units, the plan must be prepared prior to the initial reception of CCR into the unit.

Additionally, CCR facilities are required to submit an annual CCR fugitive dust control report which includes dust control measures taken at the facility, a record of citizen complaints and a summary of corrective measures. This annual report is due no later than 14 months after completion of the initial CCR fugitive dust control plan and no later than every 12 months after the initial annual report submission.

 

Inspection Requirements (40 CFR 257.83 and 40 CFR 257.84)

For all CCR surface impoundments, weekly inspections for structural weaknesses and monthly monitoring of CCR unit instrumentation by a qualified person are required. For CCR surface impoundments that are 1.) twenty feet high or more or 2.) five feet high or more and have twenty acre feet or more of storage volume, annual inspections are required by a qualified professional engineer. The annual inspection is due no later than 14 months after the initial reception of CCR (or January 19, 2016 for existing CCR units) and no later than every 12 months after the initial annual inspection.

For all CCR landfills, weekly inspections for structural weaknesses by a qualified person and annual inspections by a qualified professional engineer are required. The annual inspection is due no later than 14 months after the initial reception of CCR (or January 19, 2016 for existing CCR units) and no later than every 12 months after the initial annual inspection.

 

Run-on and Run-off Controls for CCR Landfills (40 CFR 257.81) 

Owners and operators of new and existing CCR landfills are required to maintain run-on and run-off control systems able to handle water volumes resulting from a 24-hour, 25-year storm. Additionally, each CCR unit must maintain a run-on and run-off control system plan that must be updated every five years. The plan is due no later than October 17, 2016 for existing landfills and no later than the date of initial receipt of CCR for new landfills.

 

Hydrologic and Hydraulic Capacity Requirements for CCR Surface Impoundments (40 CFR 257.82)

The CCR Rule requires that all CCR surface impoundments maintain an inflow design flood control system that can safely handle flood flows. Requirements for the flood design system vary, based on the height and hazard potential classification of the CCR unit. Additionally, each CCR unit must maintain an inflow design flood control system plan that must be updated every five years. The plan is due no later than October 17, 2016 for existing landfills and no later than the date of initial receipt of CCR for new landfills.


 

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