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Department of the Environment Chemical Metals Industries, Inc. (CMI) Vapor Intrusion Issues at the First Removal Action Site Site #2 Site #1.

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Presentation on theme: "Department of the Environment Chemical Metals Industries, Inc. (CMI) Vapor Intrusion Issues at the First Removal Action Site Site #2 Site #1."— Presentation transcript:

1 Department of the Environment Chemical Metals Industries, Inc. (CMI) Vapor Intrusion Issues at the First Removal Action Site Site #2 Site #1

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)

3 Background First Removal Action in US 1997 to Present – Post Removal Investigations –Soil Investigations / Removal –Groundwater Investigations –Vapor Intrusion investigations

4 Site #2 – 2103 Annapolis Road Assessment Activities –Monitoring wells installed to determine extent of subsurface contamination.

5 Remediation Activities Site # Annapolis Road Injections of Chemical OxidationSoil Vapor Extraction System

6 Remediation Activities (Contd)

7 Indoor Air Sampling

8 Vapor Intrusion Issues Owner Occupied Owner Occupied Owner Occupied CMI Site #1 Plume CMI Site #2 Plume 34 PCE 3.7 TCE 0.089J VC Soil Gas: 350,000 PCE 20,000 TCE 800 VC 19 PCE 1.7 TCE 31/30 PCE Soil Gas: 410 PCE 71 TCE Soil Gas: 1000 PCE 540 TCE Soil Gas: 4800 PCE 4900 TCE 1.4 PCE 0.38 TCE 3.0 PCE 1.6 TCE 2.1 PCE 3.6 TCE 2.2 PCE 0.55TCE 9.0 PCE 10.0 TCE VC 3.1 PCE 2.8 TCE CMI Site #1 3.4 PCE 0.38 TCE 0.11 VC 21 PCE 1.8 TCE 16 PCE CMI Site #2

9 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

10 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

11 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 (410)


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