department of the environment chemical metals industries, inc. (cmi) vapor intrusion issues at the...
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Department of the Environment
Chemical Metals Industries, Inc. (CMI)
Vapor Intrusion Issues at the First Removal Action Site
Site #2Site #1
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Agenda• Background
• Environmental Issues– Soil and Groundwater Contamination
– Vapor Intrusion
• Current Activities– MDE Actions
• Site #2 (2103 Annapolis Road)
• 2000 Block of Annapolis Road Homes)
– EPA Actions at Site #1 (2001 Annapolis Road)
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Background• 1981 - First Removal
Action in US
• 1997 to Present – Post Removal Investigations– Soil Investigations /
Removal
– Groundwater Investigations
– Vapor Intrusion investigations
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Site #2 – 2103 Annapolis Road
• Assessment Activities– Monitoring wells
installed to determine extent of subsurface contamination.
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Remediation Activities• Site #2 - 2103 Annapolis Road
Injections of Chemical Oxidation Soil Vapor Extraction System
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Remediation Activities (Cont’d)
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Indoor Air Sampling
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Vapor Intrusion Issues
2009 2011 2013
2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035 2037 2039 2041 2043 2045 2047
OwnerOccupied
OwnerOccupied
OwnerOccupied
CMI Site #1Plume
CMI Site #2Plume
34 PCE3.7 TCE0.089J VC
Soil Gas:350,000 PCE20,000 TCE
800 VC
19 PCE1.7 TCE 31/30 PCE
Soil Gas:410 PCE71 TCE
Soil Gas:1000 PCE540 TCE
Soil Gas:4800 PCE4900 TCE
1.4 PCE0.38 TCE
3.0 PCE1.6 TCE
2.1 PCE3.6 TCE
2.2 PCE0.55TCE
9.0 PCE10.0 TCE0.068 VC
3.1 PCE2.8 TCE
CM
I Site
#1
3.4 PCE0.38 TCE0.11 VC
21 PCE1.8 TCE 16 PCE CMI Site
#2
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Design Challenges for Vapor Intrusion Mitigation Systems
• 1920s Row Houses– Stacked Stone Foundation
– Dirt Floors And/Or Broken Concrete Floors
– Adequate Electrical Supply
Site #2
Site #1
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Summary• Site #1
– MDE To Provide Assistance As Needed By EPA
• Site #2– MDE To Monitor Effectiveness Of Remedy
– Inspect Operation Of Vapor Mitigation Systems
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For Further Information:
http://www.mde.state.md.us/Programs/LandPrograms/ERRP_Brownfields/ERRP_Superfund/index.asp
Controlled Hazardous Substance (CHS)Enforcement DivisionLand Restoration ProgramLand Management AdministrationMaryland Department of the Environment1800 Washington Boulevard, Suite 625Baltimore MD 21230(410) 537-3437