Refuse Disposal Application for Tolson Rubble Landfill
Transcript of Refuse Disposal Application for Tolson Rubble Landfill
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Phase I Public Informational MeetingSeptember 10th, 2019Crofton, Maryland
Carrie Pendleton
Refuse Disposal Application forTolson Rubble Landfill Permit No. 2003-WRF-0580
Tolson And Associates, LLC
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Presentation Agenda
• Permit Application to Maryland Department of the Environment (MDE)– Rubble disposal in Anne Arundel County– Purpose and Technical Basis
• Landfill Control Systems and Environmental Responsibility– Groundwater Protection– Surface Water Protection– Gas Control
• Design Approach and Calculations Required• Summary
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Purpose of the New Landfill Application• There is a growing need for disposal of construction and demolition
debris (CDD or rubble) in and surrounding Anne Arundel County.
• Tolson is committed to continuing cost-effective and environmentally responsible rubble disposal services for residents and businesses
• To achieve this, Tolson intends to expand the existing landfill within the mining operation site
Purpose of the Landfill Application
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Site Layout
PROPERTY BOUNDARY
SITE BOUNDARY
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Site Layout
Site Boundary
Limit of Expansion
Currently Permitted Waste Boundary
Existing Screening Berm
Closed Cunningham Landfill
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• Preferable to developing a “greenfield” site in another location
• Site is already in use for sand and gravel operations and waste disposal– Waste disposal operation began in 2016– Location and routes are known to residents and haulers– Modern engineered landfill is considered a beneficial re-use of the
open mining area• Infrastructure is already in place
– Access roads and security controls– Disposal operation (scales, litter fences, screening berm, etc.)
• Extended environmental monitoring network in place– Monitoring at the TRL has been underway since early 1990s and
expanded for current landfill and again for proposed expansion• Screening
– A screening berm already exists along the eastern boundary– Site setback is one mile from Route 3
Why Expand the Existing Site?
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What will TRL look like?
Total area = 72.38 acres 118.5 acresVertical height increase from 230 ft msl 244 ft mslBase grades lowered from 122 ft msl 100 ft mslTotal disposal capacity = 6.8 MCY 16 MCY
Max. waste elevation = 240 ft-msl
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• Leachate is controlled by the landfill liner and leachate collection system
• Gas is controlled by the liner and gas management system
• Cover system serves to minimize leachate generation and gas emissions
Basis of Design = Environmental Protection
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Overview of Landfill Operations and Control Systems
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Natural Soil minimum3 ft
Groundwater
Construction Demolition Waste
Geocomposite Drainage Layer
Prepared Subbase 2 ft
Protective Sand Layer 1 ft
Geomembrane Barrier
Leachate Drainage Pipe
Landfill Liner System
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Liner System Construction (1)
ROLLING SUBBASE
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Liner System Construction (2)
GEOMEMBRANE
GEOMEMBRANE DEPLOYMENT
PREPARED SUBBASE
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Liner System Construction (3)
GEOCOMPOSITE DRAINAGE
LAYER
DEPLOYMENT ZIP-TIED
GEOCOMPOSITE DRAINAGE LAYER ANDGEOTEXTILE DEPLOYMENT
SEAMING GEOTEXTILE DEPLOYMENT
GEOTEXTILE AND GEOCOMPOSITE
IN PLACE
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Liner System Construction (4)
GEOCOMPOSITE DRAINAGE
LAYER
PROTECTIVE SAND LAYER
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Liner System Construction (5)
PIPING TO SUMP
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Leachate Management System
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Minimizing Leachate and Nuisances
Periodic Cover
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Minimizing Leachate and Nuisances
Periodic Cover
Construction and Demolition Waste
Soil Layer 0.5 ft
Clean runoff(stormwater)
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Construction and Demolition Waste
Soil Layer 1 ft
Minimizing Leachate and Nuisances
Intermediate CoverClean runoff(stormwater)
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Construction and Demolition Waste
Geocomposite Drainage Layer
Soil Layer 2 ft
Protective Soil Layer 18 in
Geomembrane Barrier
Topsoil 6 in
Landfill Final Cover System
Clean runoff(stormwater)
Geotextile
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Landfill Gas Control and Construction
Benefits
• Helps prevent odors
• Protects air quality
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• Liner System Is the liner strong enough? Will the ground sink? Will the landfill be stable?
• Leachate Management Are the pipes and tanks big enough? Are the collection pipes strong enough?
• Stormwater Management Are the ponds big enough to hold all the
water? Will the landfill cover be eroded or damaged?
• Gas Management Do we have enough gas collection wells? Are the pipes and flare big enough?
Design Calculations Required
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• Groundwater monitoring well network– Background and downgradient
• Gas migration monitoring well network– Entire perimeter
• Routine monitoring performed– Statistical analysis of data– Reports submitted to MDE
Environmental Monitoring
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• Landfill expansion will provide long-term economical rubble disposal for the Anne Arundel County community
• Environmental quality at the site will be protected
• Permit Application available to view: Crofton Community Library Branch of the Anne Arundel County Library System1681 Riedel Road Crofton, Maryland 21114
Closing Summary