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Chemical Metals Industries, Inc. (CMI)

Site #1. Site #2. Chemical Metals Industries, Inc. (CMI). Vapor Intrusion Issues at the First Removal Action Site. Agenda. Background Environmental Issues Soil and Groundwater Contamination Vapor Intrusion Current Activities MDE Actions Site #2 (2103 Annapolis Road)

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Chemical Metals Industries, Inc. (CMI)

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

  3. Background • 1981 - 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 • Soil Vapor Extraction System • Injections of Chemical Oxidation • Site #2 - 2103 Annapolis Road

  6. Remediation Activities (Cont’d)

  7. Indoor Air Sampling

  8. CMI Site #2 21 PCE 1.8 TCE Owner Occupied 3.4 PCE 0.38 TCE 0.11 VC 16 PCE Owner Occupied Owner Occupied 2009 2011 2013 2029 2017 2015 2031 2033 2035 2041 2023 2039 2045 2047 2019 2021 2025 2027 2037 2043 CMI Site #1 3.1 PCE 2.8 TCE 2.1 PCE 3.6 TCE 2.2 PCE 0.55TCE 34 PCE 3.7 TCE 0.089J VC Soil Gas: 350,000 PCE 20,000 TCE 800 VC Soil Gas: 4800 PCE 4900 TCE Soil Gas: 1000 PCE 540 TCE Soil Gas: 410 PCE 71 TCE 9.0 PCE 10.0 TCE 0.068 VC 1.4 PCE 0.38 TCE 3.0 PCE 1.6 TCE 19 PCE 1.7 TCE 31/30 PCE CMI Site #2 Plume CMI Site #1 Plume Vapor Intrusion Issues

  9. 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

  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 21230 (410) 537-3437 http://www.mde.state.md.us/Programs/LandPrograms/ERRP_Brownfields/ERRP_Superfund/index.asp

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