Claremore Medical Office Building From Landfill to Medical Office Building A Brownfield Success...
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Transcript of Claremore Medical Office Building From Landfill to Medical Office Building A Brownfield Success...
![Page 1: Claremore Medical Office Building From Landfill to Medical Office Building A Brownfield Success Story THE GREEN SIDE OF BROWNFIELD REMEDIATION.](https://reader035.fdocuments.in/reader035/viewer/2022062519/56649c925503460f9494df0e/html5/thumbnails/1.jpg)
Claremore Medical Office Building
From Landfill to Medical Office Building
A Brownfield Success Story
THE GREEN SIDEOF BROWNFIELD REMEDIATION
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In 2002, Claremore Hospital initiated plans to develop a medical office building (MOB) adjacent to the hospital on a
vacant lot owned by the City of Claremore.
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Site located in a mixed commercial and residential area in Claremore
Claremore Regional Hospital adjacent site to the south.
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ESA Site Reconnaissance:Approximate 5.5 acre vacant, grass-covered lot with baseball fields.
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Previous report of “Subsurface Evaluation of the City of Claremore Abandoned Landfill” dated October 27, 1992 indicated the landfill was located on subject site and property currently occupied by public library. Report indicated the landfill began operations between 1941 and 1958, and was closed between 1958 and 1964.
A local resident stated that, as a child, he lived near the subject site and recalled a landfill on the site. He believed the landfill was approximately 30-40 feet deep.
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Site Investigation / Methane Evaluation
Borings and temporary monitor wells installed in February and June 2003– Arsenic, chromium, lead and mercury, and 1,4-
dichlorobenzene concentrations exceed MCLs in groundwater samples
July 2003, Claremore Regional Hospital:– Contracted with the ODEQ under the Oklahoma
Brownfields Voluntary Redevelopment Act (Memorandum of Agreement and Consent Order [MACO])
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Brownfield Process
Site Characterization completed in 2003– Data, Historical Summaries– Pathway/Receptor Assessment– Risk Assessment– Remedial Options
Preliminary landfill methane analysis in November 2003 and methane recovery system design in August 2004
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Cross Section
TRASH AND DEBRIS
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Brownfield Process
Public Notice of Draft Site Cleanup Plan (Dec. 14, 2004)
Final Site Cleanup Plan (Feb. 8, 2005)
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Elements of Site Cleanup Plan
Primary receptors:– Commercial workers exposed to methane and VOCs
via inhalation of vapors– Construction workers exposed to via dermal contact
and ingestion of impacted soil and GW
Remedial measures– Slab-on-pier building design– Segregation and disposal of contaminated soil
and GW– Methane monitoring/evacuation system
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Cleanup Plan Implementation
Risk Management Before Construction Operations– Pre-construction meeting (December 2004)
Risk Management During Construction Operations– Communications to workers about contaminant
exposure– Construction worker PPE– Management of wastes– Equipment decontamination– Limited access to construction site– Methane monitoring and ventilation system
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PPE for construction workers while drilling piers
Setting rebar for concrete piers
Construction Worker Exposure
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Solid Waste (Drill cuttings for piers)
Groundwater Waste (Pumped from piers)
Management of Wastes
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Finished Piers for Foundation
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Manifolded Gathering System
Perforated PVC Pipe
Methane and VOC Gathering System
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20-mil HDPE Geomembrane and Boots Around Piers, Elevator, Utilities and Other Penetrations
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Medical Office Building
PVCVentilationPipe Riser
Rooftop Vent Fan
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Sump for drainage from methane gathering system
Interior-Mounted Ultima X Gas
Methane Monitor & Alarm
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Cleanup Plan Implementation
Post-Construction Risk Management– Methane monitoring of building interior
Future Monitoring and Maintenance Requirements– Cover soil to prevent erosion– Construction worker protection during future
construction– Groundwater monitoring (Limited time)– Methane monitoring and ventilation system
maintenance
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Land Use Restrictions
No residential use of property No use of groundwater and no drilling of wells
other than for investigation or remediation No excavation below 2 feet without ODEQ
approval
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