Dispersion calculations for non-radiological hazardous chemical emissions from the Defense Waste Processing Facility and related activities

Technical Report · Mon Oct 22 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/5990962· OSTI ID:5990962

Hunter, C H

The Environmental Protection Agency's (EPA) Industrial Source Complex -- Short Term (ISCST) air dispersion model was used to examine potential atmospheric impacts of routine benzene and mercury emissions from the Defense Waste Processing Facility (DWPF), In-Tank Precipitation (ITP) facilities, and the Saltstone Facility. The highest model estimated 8-hour average ground-level benzene concentrations were found to occur in the immediate vicinity of the ITP filter/stripper building (241-96H). Subsequent model calculations were used to determine minimum stack release heights that would be necessary to achieve compliance with this workplace exposure standard for currently anticipated emission levels. The highest 24-hour average site boundary concentrations of benzene and mercury generally occurred to the north of S and H areas. Concentrations were well below the ambient concentration standards that have been identified for these substances in an air toxics policy proposed by the State of South Carolina. Estimates of annual average benzene concentrations for offsite locations were used to estimate the excess lifetime cancer risk. Assuming continuous 70-year exposure to the estimated annual benzene concentrations, the excess cancer risk to the maximum exposed individual was estimated to be 3 {times} 10{sup {minus}7}. Similar lifetime exposure summed over the surrounding population resulted in an estimated average of 6 {times} 10{sup {minus}4} excess cancers per year. 14 refs., 1 fig., 7 tabs.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 5990962
• Report Number(s): WSRC-RP-90-1209; ON: DE91009305
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BENZENE
ECOLOGICAL CONCENTRATION
EMISSION
CARCINOGENESIS
RISK ASSESSMENT
CHEMICAL EFFLUENTS
ENVIRONMENTAL IMPACTS
MERCURY
SAVANNAH RIVER PLANT
AIR POLLUTION CONTROL
AIR POLLUTION MONITORING
AIR QUALITY
COMPLIANCE
COMPUTERIZED SIMULATION
DOSE-RESPONSE RELATIONSHIPS
ENVIRONMENTAL EXPOSURE
ENVIRONMENTAL TRANSPORT
GASEOUS WASTES
HEALTH HAZARDS
NONRADIOACTIVE WASTES
OCCUPATIONAL EXPOSURE
POLLUTION REGULATIONS
SAFETY STANDARDS
STACK DISPOSAL
AROMATICS
CONTROL
ELEMENTS
ENVIRONMENTAL QUALITY
HAZARDS
HYDROCARBONS
MANAGEMENT
MASS TRANSFER
METALS
NATIONAL ORGANIZATIONS
ORGANIC COMPOUNDS
PATHOGENESIS
POLLUTION CONTROL
REGULATIONS
SIMULATION
STANDARDS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology