Figure 1. Site Location
Figure 2. General Process Flow Diagram
Attachment B-1
Figure 8.1-1. General Process Flow Diagram
Figure 8.1-2. General Process Flow Diagram
Figure 8.1-3. General Process Flow Diagram
Table 8.1-1 Emission Factors
Table 8.1-2. Summary of Size Specific Emission Factors
Figure 8.1-4. Size specific emisssion factors for conventional
asphalt plants.
Figure 8.1-11. Drum Mix Plants
Table 8.1-4. Emission Factors
Figure 8.1-5. Size Specifific Emission Factors
Figure 8.1-14. Emission Factors
Table 8.1-5. Emission Factors For Selected Gaseous Pollutants
Table 8.1-6. Characteristics of a Representative Asphaltic
Concrete Plant
Figure 8.1-17. References for Section 8.1
Figure 8.1-18. References for Section 8.1
GLOSSARY AND ACRONYM/ABBREVIATION LIST
Glossary
ambient air
Any unconfined portion of the atmosphere: open air, surrounding
air.
comparison values
ATSDR uses comparison values to assist in selecting chemicals detected in environmental
media for further evaluation. Comparison values are estimated contaminant concentrations
that are not likely to cause adverse human health effects following exposure,
given a standard intake rate and standard body weight. The comparison values
are calculated from the scientific literature available on exposure and health
effects. Because comparison values do not represent thresholds of toxicity,
chemical concentrations exceeding comparison values do not necessarily pose
health hazards.
concentration
The amount of one substance dissolved or contained in a given amount of another.
For example, seawater contains a higher concentration of salt than fresh water.
contaminant
Any substance or material that enters a system (the environment, human body,
food, etc.) where it is not normally found.
environmental contamination
The presence of hazardous substances in the environment. From the public
health perspective, environmental contamination is addressed when it potentially
affects the health and quality of life of people living and working near the
contamination.
exposure
Contact with a chemical by swallowing, by breathing, or by direct
contact (such as through the skin or eyes). Exposure may be short term (acute)
or long term (chronic).
health consultation
A response to a specific question or request for information pertaining to a
hazardous substance or facility (which includes waste sites). It often contains
a time-critical element that necessitates a rapid response; therefore, it is
a more limited response than an assessment.
National Ambient Air Quality Standards
Standards established by EPA that apply for outdoor air throughout the country.
National Emissions Standards for Hazardous Air Pollutants (NESHAPS): Emissions
standards set by EPA for an air pollutant not covered by NAAQS that may cause
an increase in fatalities or in serious, irreversible, or incapacitating illness.
Primary standards are designed to protect human health, secondary standards
to protect public welfare (e.g., building facades, visibility, crops, and domestic
animals).
no apparent public health hazard
ATSDR places sites into one of five categories: 1) urgent public health
hazard, 2) public health hazard, 3) indeterminate public health hazard, 4) no
apparent public health hazard, 5) no public health hazard. These categories
were selected to: 1) characterize the degree of public health hazard at the
site based on factors such as the existence of potential pathways of human exposure,
the susceptibility of the exposed community, the comparison of expected human
exposure levels to applicable health-based standards, and an evaluation of existing
community-specific health outcome data, 2) determine whether actions should
be taken to reduce human exposure to hazardous substances from a site and whether
additional information on human exposure and associated health risks is needed
and should be acquired by conducting further environmental sampling or other
health actions including epidemiologic studies, establishing a registry or a
health surveillance program, or environmental health education, 3) identify
toxicologic data gaps for substance-specific and generic toxicologic issues.
These data gaps will be considered by the Division of Toxicology in establishing
research priorities and in developing toxicological profiles.
odor threshold
The minimum odor of a water or air sample that can just be detected after successive
dilutions with odorless water. Also called threshold odor.
petition
Citizens and public officials may petition ATSDR to
conduct a health assessment of hazardous waste site or a release of hazardous
substances into the environment. Petitions for health assessments are submitted
in writing to the ATSDR Assistant Administrator. After ATSDR receive the petition,
evaluates the petition to determine what type of action best meets the community=s
needs or if no action is needed. For more information about the petition process,
please call the ATSDR toll-free information line at (800) 447-1544.
public health assessment
The evaluation of data and information on the release of hazardous
substances into the environment in order to assess any current or future impact
on public health, develop health advisories or other recommendations, and identify
studies or actions needed to evaluate and mitigate or prevent human health effects;
also, the document resulting from that evaluation.
standards
Norms that impose limits on the amount of pollutants or emissions produced.
EPA establishes minimum standards, but states are allowed to be stricter.
Acronyms and Abbreviations
EPA
The United States Environmental Protection Agency.
NAAQS
National Ambient Air Quality Standard
NDEQ
The Nebraska Department of
NPL
National Priorities List
PM10
particulate matter (10 micrometers and less)
ppm
parts per million
