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Portal: EPA-GENERAL
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EIMS Metadata Report - Document
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| Entry ID:
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62021 |
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| Title:
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MONITORING TOXIC ORGANIC GASES AND PARTICLES NEAR THE WORLD TRADE CENTER AFTER SEPTEMBER 11, 2001 |
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| Version:
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1.0 |
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| Abstract
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| Abstract:
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The September 11, 2001 attack on the World Trade Center (WTC) resulted
in an intense fire and the subsequent, complete collapse of the two
main structures and adjacent buildings, as well as significant damage
to many surrounding buildings within and around the WTC complex. This
16-acre area has become known as Ground Zero. In response to this
disaster, the US EPA quickly positioned air monitors and samplers
around Ground Zero to characterize the resulting air plumes. One such
instrument was a High Capacity Integrated Organic Gas and Particle (HiC
IOGAP) sampler with a 2.5 mm cyclone for particle discrimination to
collect semi-volatile gases and particles for speciation of organic
compounds.
The results indicate that after the initial
destruction of the WTC the remaining air plumes from the disaster site
were comprised of many pollutants and classes and represent a complex
mixture. This mixture includes compounds that are typically associated
with fossil fuel emissions. The molecular markers for these emissions
include the high levels of PAHs observed, the n-alkanes Carbon Prefix
Index ~ 1 (odd carbon:even carbon ~ 1), as well as pristane and phytane
as specific markers for fuel oil degradation. These results are not
unexpected considering the large number of diesel generators and
outsized vehicles used in the removal phases. The mixture also includes
emissions of burning and remnant materials from the WTC site. The
molecular markers for these emissions include retene and
1,4a-dimethyl-7-(methylethyl)-1,2,3,4,9,10,10a,4a-octahydrophenanthrene
which are typically biogenic in origin. In addition, the compound
1,3-diphenyl propane [1',1'-(1,3-propanediyl)bis-benzene] is found in
significant concentrations. This species has not previously been
reported from ambient sampling. It has been associated with polyvinyl
chloride materials, which are believed to be in abundance at the WTC
site. These emissions lasted for over three weeks (9/26/01-10/20/01)
after the initial destruction of the WTC.
This work has been
wholly or in part by the United States Environmental Protection Agency.
It has been subjected to Agency review and approved for publication.
Mention of trade names or commercial products does not constitute
endorsement or recommendation for use.
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| Citation
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( 1 ) |
| Citation:
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Swartz,
E. C., L. Stockburger, AND D. A. Vallero. MONITORING TOXIC ORGANIC
GASES AND PARTICLES NEAR THE WORLD TRADE CENTER AFTER SEPTEMBER 11,
2001. Presented at International Society of Exposure Analysis 2002
Conference, Vancouver, Canada, August 11-15, 2002. |
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| Administrative Details
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( 1 ) |
| Entry Date:
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09/26/2003 |
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| Revision Date:
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06/21/2006 |
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| Release Date:
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09/26/2003 |
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| Status:
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REVIEWED |
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| EIMS Partner:
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NATIONAL EXPOSURE RESEARCH LABORATORY |
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| DEP:
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MARY P. O'BRIANT |
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| Collection(s):
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GENERAL |
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ORD PUBLICATIONS |
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TIMS |
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| Contacts
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( 3 ) |
| Person |
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| Name:
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ERICK C. SWARTZ |
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| Role:
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AUTHOR |
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| Primary Phone #:
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9195417585 |
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| Primary Email:
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Not Provided |
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| Name:
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ERICK C. SWARTZ |
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| Role:
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PROJECT OFFICER |
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| Primary Phone #:
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9195417585 |
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| Primary Email:
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Not Provided |
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| Organization |
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| Organization:
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US
ENVIRONMENTAL PROTECTION AGENCY OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LAB HUMAN EXPOSURE & ATMOSPHERIC
SCIENCES DIVISION |
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| Role:
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OWNER |
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| Access Information
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( 1 ) |
| Availability:
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PUBLIC |
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| Objectives
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( 1 ) |
| Objective:
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The
overall goal of human exposure research in air toxics is to develop the
methods, data, and models of exposure that will provide the scientific
basis for EPA to move to a risk-based program and that will enhance
NATA. Specific objectives for this measurement task are to:
o Characterize exposure concentrations and variability in critical microenvironments using targeted measurement studies;
o Quantify the relationship of personal exposure to ambient and indoor concentrations;
o Identify critical microenvironments, human activities, and factors influencing exposure to air toxics;
o Develop methods to quantify exposure from background, point or area sources, and microenvironmental sources;
o Evaluate aggregate and cumulative exposures. |
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| Related Entries
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( 1 ) |
| Related Projects
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( 1 ) |
| Related Entry ID:
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56207
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| Title:
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HUMAN EXPOSURE MEASUREMENTS OF AIR TOXICS |
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| Version:
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1.0 |
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| Relationship Reason:
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A PROJECT OF THE PRODUCT |
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