1. ENV 420 Week 1 Individual Assignment Risk Assessment
Worksheet NEW
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Part A: Ecological Risk Assessment Framework
Provide a 350- to 700-word response answering the
2. following questions:
· Describe the four main topics of the framework for
ecological risk analysis described in Human and
Ecological Risk Assessment. The response must involve
problem definition analysis, characterization, and
management decision making. You may refer to the
framework in ecological risk assessment as shown in
Figure 6.1 (Ch. 6) in Human and Ecological Risk
Assessment.
· How do the four main topics of the framework
interrelate?
· Why is this framework important to a risk
assessment? How is it used?
Part B: Historical Development of Risk Assessment
Summary
Write a 350- to 700-word summary of at least three risk
assessment innovations that were changed or developed
in the past 100 years.
· Use Table 1.1 (Ch. 1) in Human and Ecological Risk
Assessment as a guide to understanding the origins of
ecological and human risk assessment beginning with
the industrial revolution.
· Cite at least two outside sources to summarize the
risk assessment innovations.
4. ENV 420 Week 2 Learning Team Assignment Human
Health Risk Assessment NEW
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Complete one of the following human health risk
assessments. You may complete the Case Study that
includes identifying hazards and evaluating toxicity
5. assessments. You may also choose to complete the paper
that includes exposure to toxicity and risk assessment.
Select and complete one of the following assignments:
Option 1: Elements of Environmental Risk Assessment
Case Study Evaluation
Option 2: Toxicology of Permethrin and Saccharin Paper
Option 1: Elements of Environmental Risk Assessment
Case Study Evaluation
Resource: Human and Ecological Risk Assessment
Write a 1,400- to 1,750-word evaluation of the
application of risk assessment in the Ch. 9 case study:
“Risk Assessment of Chromium-Contaminated Soils:
Twelve Years of Research to Characterize the Health
Hazards”.
• Describe the case, the early investigation, and the
resulting uncertainties.
• Describe the four steps of human health risk
assessment: identify hazard, dose-response modeling,
exposure assessment, and risk characterization or
probability. What is your estimation of the short- or
long-term damage and exposure to humans,
environmental toxicants, or chemical hazards risk
analyses that were applied in the case study?
6. • Evaluate the exposure and toxicity assessments and
the subsequent risk characterization. What, for example,
were the findings of the exposure and toxicity
assessments? What are the implications? Evaluate the
steps used in the risk assessment, the purpose, and
conclusion.
• Summarize the practical implications of the risk
assessment.
• Describe the costs versus benefits of a site remediation
based on the risk assessment. Use the data presented in
the case.
• Detail the management decisions that are part of cost
and benefit analysis, and describe possible
improvements that would further clarify the risk and
cost comparisons in the case.
Format your case study evaluation consistent with APA
guidelines.
7. ENV 420 Week 3 Individual Assignment Occupational
Risk Research Paper NEW
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Choose a lead, asbestos, or silica contaminant hazard for
occupational risk assessment research.
8. Research your chosen occupational risk and analyze the
assessments of human exposure to contaminants and
evaluate how these assessments were conducted.
Write a 750- to 1,050-word research paper in which you
complete the following:
Describe how the risks of exposure to a specified
concentration of your chosen hazard may be calculated
differently for public household exposure versus
workplace occupational exposure.
Answer the following in your paper:
In general, how does the application of occupational risk
assessment differ from ecological or human health
risks? For example, occupational risks may be based on
a 10-hour workday, whereas animals or insects might
have different ecological exposure risks and life spans.
How might your chosen human health risk hazard differ
in terms of risk if it were ecological rather than a
nonoccupational exposure?
Identify the acceptable exposure limits for affected
populations in occupational and nonoccupational
environments. Explain the reasons for the differing risk
assessment models and explain the justification for the
differences.
9. ENV 420 Week 3 Individual Assignment Time-of-Day
Occupational Risk Paper or Podcast NEW
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Write a 750- to 1,050-word paper or record a 10-minute
podcast in which you address the following:
10. Analyze the risk relationship between variable and
night shift work to occupational accidents.
Choose one of the following examples or obtain approval
from your instructor of other examples: Police shift
work; Union Carbide and Bhopal, India accident; Shift
worker and Chernobyl, Russia accident; or Three Mile
Island, Pennsylvania accident.
Address the following in your analysis:
Industry risk
Time of shift
Length of shift
Biological clock
Stress
Boredom
Country or ethnicity
Explain how risk assessment is applied differently
between occupational and nonoccupational
environments.
11. ENV 420 Week 4 Individual Analyzing Ecological System
(Ecology and Wildlife Risk Evaluation) NEW
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Write a 1,700- to 2,050-word analysis of the Los Alamos
National Laboratory in Case Study 19.5 and the Ch. 22
12. case study, which predicts the effect of pesticides on
aquatic systems. Complete the following in your paper:
Describe the process of defining ecological value using
the specific examples developed in the case study of the
Los Alamos National Laboratory from section 19.5.
Compare section 19.5 with the application of
probabilistic risk assessment methods in the case
predicting the effect of pesticides on aquatic systems in
Ch. 22. Begin by briefly describing the Ch. 22 case, the
hazards that were studied, and the risk uncertainties
that lead to a reanalysis of the case using probabilistic
assessment.
Explain how the case from Ch. 22 applied the risk
assessment framework and hypothesize improvements
in the analysis process.
Describe how the risk assessment correlated to
observed field studies and evaluate the importance of
this type of correlation in general for all risk assessment
efforts.
What are the ecological and social values of concern in
each case?
Establish a value for the ecological components in each
case. Are there any tradeoffs between wildlife and
development? How is this risk assessment actually
determined?
Hypothesize how the probabilistic analysis process
could be improved in the Ch. 22 case study to predict
ecological risks for environmental contaminants.
13. ENV 420 Week 4 Individual Analyzing Ecological
Systems (Gulf Oil Spill Case Study) NEW
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Write a 1,750- to 2,050-word analysis of the British
Petroleum Oil Spill in the Gulf of Mexico. Complete the
following in your paper:
14. Describe the main events of the incident and the
principle parties involved in a timeline.
Describe the laws enforced at the time.
List the ecological risks of the affected area at the time
of the spill.
Forecast what may be required of the oil industry
relative to future risk assessments.
How can economic value be allocated in this scenario?
Describe the process of defining ecological value and
discuss the application of probabilistic risk assessment
methods in this case. Discuss the hazards and the risk
uncertainties that can lead to a reanalysis of this case
using probabilistic assessment.
Describe how the risk assessment correlated to
observed field studies and evaluate the importance of
this type of correlation in general for all risk assessment
efforts.
What are the ecological and social values of concern in
this case?
Establish a value for the ecological components in this
case. Are there any tradeoffs between wildlife and
development? Why or why not? How is this risk
assessment actually determined?
15. ENV 420 Week 5 Learning Team Assignment
Environmental Management Paper and Presentation
NEW
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16. Research a local environmental issue, such as one of the
following:
Municipal solid waste
Household hazardous waste
Potable water treatment
Municipal sanitary waste treatment
Carbon dioxide emissions
Any other local environmental issue of interest, with
faculty approval
Include at least four outside references that describe the
long-term costs and benefits that may affect decisions
based on economic or social effects for your chosen
environmental issue.
Include an appropriate course of action based on your
analysis of the local environmental risk assessment.
Address all of the following in your evaluation:
What are the long-term costs and benefits of your
course of action for the local environmental issue?
Determine relevant values of ecosystem variation due to
any local climate change for your chosen environmental
issue.
Develop a simple cost-benefit analysis and explain the
no-action alternative.
What are the economic and social benefits of your
research? What is the local environmental impact?
Conclude with a course of action on your community
issue that is supported by your research, your risk
assessment, and your cost comparisons.
Format your paper consistent with APA guidelines.
Create a 10-slide Microsoft® PowerPoint® with
