Development of an air quality modeling system to investigate long-range transport and surface deposition of toxics and PM{sub 10}
Conference
·
OSTI ID:422904
- Systems Applications International, San Rafael, CA (United States)
- Environmental Protection Agency, Research Triangle Park, NC (United States)
- Environmental Protection Agency, Washington, DC (United States)
Deposition of airborne toxics to aquatic environments has been identified as a particular concern under the 1990 Clean Air Act Amendments (CAAA). Under CAAA Section 112, the US Environmental Protection Agency (EPA) is required to investigate and control the deposition of pollutants to the Great Lakes, Chesapeake Bay, Lake Champlain, and US coastal waters (collectively referred to as the Great Waters). EPA (1994) has identified 15 pollutants as being of particular concern in the Great Waters, 13 of which are listed as hazardous air pollutants (HAPs) under Section 112(b). Sources for these HAPs fall into 30--35 categories listed under Section 112(c)(1); therefore, many of the sources will be subject to MACT standards or other alternative controls. The EPA is sponsoring the Great Waters Impact Assessment Pilot Study (GWIAPS). The central objective of GWIAPS is to develop and demonstrate a modeling system capable of assessing the contribution of certain sources of HAPs toward the burden of toxic materials in the Great Waters via atmospheric transport and deposition pathways. As particulate matter (PM) plays a significant role in the chemical state of certain toxics, it is also necessary for this model to sufficiently treat primary and secondary PM from natural and anthropogenic sources. This paper provides a description of the new modeling system; a preliminary multi-day case study is also presented to demonstrate the model and to examine the role of regional meteorology on long-range transport and deposition of certain toxics to the Great Lakes.
- OSTI ID:
- 422904
- Report Number(s):
- CONF-960127--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Identification of sources contributing to the contamination of the Great Waters by toxic compounds (revised)
EPA's urban air toxics strategy
The Great Waters Second Report to Congress: Summary of scientific and technical activities
Technical Report
·
Tue Mar 16 23:00:00 EST 1993
·
OSTI ID:6862569
EPA's urban air toxics strategy
Conference
·
Thu Jul 01 00:00:00 EDT 1999
·
OSTI ID:20002249
The Great Waters Second Report to Congress: Summary of scientific and technical activities
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:617695