Transcript CMI Public Meeting PowerPoint Presentation

Department of the Environment
Chemical Metals
Industries, Inc. (CMI)
Vapor Intrusion Issues at the First Removal Action Site
Site #1
Site #2
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)
Background
• 1981 - First Removal
Action in US
• 1997 to Present – Post
Removal Investigations
– Soil Investigations /
Removal
– Groundwater
Investigations
– Vapor Intrusion
investigations
Site #2 – 2103 Annapolis Road
• Assessment
Activities
– Monitoring wells
installed to
determine extent
of subsurface
contamination.
Remediation Activities
• Site #2 - 2103 Annapolis Road
Soil Vapor Extraction System
Injections of Chemical Oxidation
Remediation Activities (Cont’d)
Indoor Air Sampling
Vapor Intrusion Issues
21 PCE
1.8 TCE
3.4 PCE
0.38 TCE
0.11 VC
Owner
Occupied
16 PCE
CMI Site #2
Owner
Occupied
2009
2011
Owner
Occupied
2013
2015
2017
2019
2021
2023
2025
2027
2029
2031
2033
2035
CMI Site #1
2.1 PCE
3.6 TCE
2037
2.2 PCE
0.55TCE
2039
2041
2043
2045
2047
3.1 PCE
2.8 TCE
34 PCE
3.7 TCE
0.089J VC
Soil Gas:
350,000 PCE
20,000 TCE
800 VC
Soil Gas:
1000 PCE
540 TCE
Soil Gas:
410 PCE
71 TCE
19 PCE
1.7 TCE
CMI Site #1
Plume
1.4 PCE
0.38 TCE
3.0 PCE
1.6 TCE
9.0 PCE
10.0 TCE
0.068 VC
Soil Gas:
4800 PCE
4900 TCE
31/30 PCE
CMI Site #2
Plume
Design Challenges for Vapor
Intrusion Mitigation Systems
Site #1
• 1920s Row Houses
– Stacked Stone Foundation
– Dirt Floors And/Or Broken
Concrete Floors
– Adequate Electrical Supply
Site #2
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
For Further Information:
Controlled Hazardous Substance (CHS)
Enforcement Division
Land Restoration Program
Land Management Administration
Maryland Department of the
Environment
1800 Washington Boulevard, Suite 625
Baltimore MD 21230
(410) 537-3437
http://www.mde.state.md.us/Programs/LandPrograms/ERRP_Brownfields/ERRP_Superfund/index.asp