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United
States Environmental Protection Agency
Region V
POLLUTION REPORT
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| Date: |
Tuesday, August 7, 2007
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| From: |
Sonia R. Vega
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| To: |
Sonia R. Vega, USEPA
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Mary Gade, U.S. EPA
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Bharat Mathur, U.S. EPA
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Rick Karl, U.S. EPA
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Linda Nachowicz, U.S. EPA
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Ralph Dollhopf, U.S. EPA
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Charles Gebien, U.S. EPA
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David Chung, U.S. EPA
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John Maritote, U.S. EPA
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Steve Lee, MPCA
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Mark Johnson, ATSDR
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Dorene Fier-Tucker, MPCA
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Fred Micke, U.S. EPA
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lori olson, City of Minneapolis
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Subject:
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State Requests Assistance with Additional Air Sampling and Monitoring
I-35W Mississipi River Bridge Collapse
Minneapolis, MN
Latitude: 44.9789000
Longitude: -93.2450000
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| POLREP No.: |
3
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Site #:
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B5KZ
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| Reporting Period: |
8/4/07 to 8/7/07
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D.O. #:
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| Start Date: |
8/1/2007
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Response Authority:
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CERCLA
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Mob Date: |
8/3/2007
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Response Type:
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Emergency
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| Demob Date: |
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NPL Status:
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Non NPL
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| Completion Date: |
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Incident Category:
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Removal Assessment
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| CERCLIS ID #: |
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Contract #
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| RCRIS ID #: |
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As of August 6, we have received sampling results for asbestos, silicates and VOCs. There is NO evidence of a hazardous materials release at this time. For a complete data package please see the Documents Section.
The State of Minnesota asked the U.S. EPA for assistance with perimeter air monitoring during demolition activities. The objectives of this additional sampling is to identify if there is a problem with dust and particulates during demolition activities, and to prove that there is not. Specifically, they are interested in the following parameters: metals, silicates, asbestos, and particulates.
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As a baseline, we will be collecting air samples this coming weekend for 3 consecutive days. Then, once the demolition begins, we will sample for 5 consecutive days. The data will be evaluated at that time, and adjustments will be made as necessary. For this first round of samples the State selected 7 sampling and monitoring locations in the nearby residential areas. Please see Sampling Location Map in the Documents Section. These potential locations will be visited today to evaluate accesibility, and will be adjusted as necessary.
Once EPA receives sampling results, they will be given to the Minnesta Pollution Control Agency (MPCA), the Minnesota Department of Health (MDH), and the City of Minneapolis for interpretation. The City of Minneapolis will relase the information to the public, if necessary.
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Complete the sampling plan first draft, and get comments from MPCA, MDH and the City. Also, request comments from EPA's ERT, and Region's 5 Water and Air Divisions.
We will also coordinate with the City to have access to a couple of vehicles when they are removed from the collapsed area, to collect wipe samples. This might be the only indicator of what was in the air at the time of the collapse.
Coordinate with the state OSHA inspectors to share information on monitoring and sampling efforts on both the work and perimeter areas.
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Safety is still the number one concern for rescuers and responders. There are still people missing, and the bridge continues to shift.
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response.epa.gov/I35WMississippiRiverBridgeCollapse
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