landfill extended post closure care michigan case...
TRANSCRIPT
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Landfill Extended Post Closure Care Michigan Case Study
Al Taylor
Hazardous Waste Section
(517) 614-7335 | [email protected]
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Background
• Landfill accepted hazardous waste and solid waste from 1975 -1983
• Certified closed in 1992 by MDEQ (now EGLE)
• Facility would like to end post closure care in 2022
• Renewed Post Closure Operating License on 9/28/2018 for 10 years
• License contains a requirement for the owner to submit a Evaluation of Post Closure Care Plan (EPCC) for review and approval
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Background
• Single landfill unit – 61 acre cell on a 98 acre parcel
• Predates modern landfill design standards
– No engineered liner or leachate collection system
– Retrofitted passive leachate collection system installed as part of post closure
– Natural clay
• Cap is compacted clay with not geo-membrane
• Landfill gas extraction wells
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Background
• Groundwater and leachate monitoring programs
– Groundwater detection monitoring program
– To be evaluated for PFAS
• Surface water monitoring program
• Monitoring and maintenance programs
– Leachate collection system
– Landfill gas collection system
– Final cover
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Strategy
• Use “Guidelines for Evaluating the Post-Closure Care Period for Hazardous Waste Disposal Facilities under Subtitle C of RCRA”– December 15, 2015 from Barnes Johnson, Director ORCR
• Submit the Evaluation of Post Closure Care Plan (EPCC) for review and approval by EGLE.– Leachate Generation– Landfill Gas Migration and Emission– Landfill Gas Quality and Flow– Critical components monitoring and maintenance
• Leachate collection system• Final cover• Landfill Gas
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Strategy
• Use historic and new data to evaluate if changes to the monitoring and maintenance programs are warranted
– Reduction or increase in:
• environmental monitoring
• Critical component maintenance
• Financial assurance
– Provide necessary information to evaluate termination or extension of post closure care period
• EPCC Plan is currently under review
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Example Post Closure Cap Inspection Report
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August 2019 Cap Inspection
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Corrective Action Monitoring and Maintenance Inspection Report
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Michigan Department of
Environment, Great Lakes, and Energy
800-662-9278www.Michigan.gov/EGLE
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