1. Out of 300 workers in a plant manufacturing Gen-X, 23 developed liver cancer. A controlgroup consisting of individuals with smoking histories similar to the plant workers, andwho were unlikely to have encountered Gen-X, had 35 with liver cancers and 510 whodid not develop liver cancer. What is relative risk, attributable risk, and odd ratio?2The

Step 1: Step 2: Step 3: Step 4:

Answered: 1. Out of 300 workers in a plant…

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter1: Integrated Solid Waste Management

Section: Chapter Questions

Problem 1.8P: We often see packaging labeled “made from 100% recycled materials “or Made with recyclable...

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Which of the following activities is associated with the lowest level of risk? O Rock climbing O Skydiving O Giving birth in the US O Running a marathon D Question 17 What is the process of identifying the effects of a chemical on various organs in the human body called? Dose response assessment Exposure assessment Hazard identification O Risk characterization Question 18 Which of the following is NOT a pillar of sustainable development? Environmental protection Wealth accumulation Social equality O Economic growth
A man works in an aluminum smelter for 10 years. The drinking water in the smelter contains 0.070 mg/L arsenic and 0.560 mg/L methylene chloride. His only exposure to these chemicals in water is at work. Recall the total HI (i.e. the total overall risk) is the sum of individual HI values. (a) What is the hazard index (HI) associated with this exposure? (b) Does the HI indicate this is a safe level of exposure?(c) What is the incremental lifetime cancer risk for the man due solely to the water he drinks at work and does it seem to be an acceptable risk according to the EPA’s standard of acceptable risk?
Question 2: A chemist working in a paint manufacturing company has injured his eyes when the chemical he was working with detonated. The Safety Board company is required to develop a standard guideline based on Hierarchy of Control. Propose 4 criteria that need to be included in the guideline.
5. USEPA sets standards for arsenic emission from foundry so that the unit cancer risk is 0.015 (per ug/m3 of arsenic in the atmosphere over a lifetime period). Assuming the exposure to arsenic is 25 years, what should be the maximum concentration of arsenic in ambient air in a way that the real risk of getting cancer during these 25 years is 0.0001 (one chance in ten thousand)?
Employers have the responsibility to ask NSF for information concerning whether any substance in the workplace has potentially toxic effects. O True O False
A Moving to another question will save this response. Question 3 What is the risk for a child drinking water contaminated with 0.061 mg/L carbon tetrachloride for 5 years? A Moving to another question will save this response.
Joey says he is itchy. There is a test for allergy to cats, but this test is not alwaysr ight. For people that really do have the allergy, the test says yes 85% of the time. For people that do not have the allergy, the test says yes 15% of the time. If 1% of the population have the allergy and Joey's test says yes, what are the chances that hunter really has the allergy?
Helen knows that anemic causes yellow skin 53% of the time. Prior probability of any patient that is anemic is 1/60,000. Prior to probability of any patient that have yellow skin is 1/25. If a patient has yellow skin, what is the probability that he or she is anemic?
A family eats homegrown vegetables daily which is irrigated with water from a river polluted with benzene having a concentration of 0.05 mg/L. The cancer potency factor for ingesting benzene is 2.9 x 10-2 mg/kg.day.a) Following the EPA exposure factors, determine the lifetime cancer risk assuming the receptor is an adult. State all assumptions. b) To reduce the lifetime cancer risk, it is proposed that the village replaces their homegrown produce with fish caught in the same river. Determine the percentage change in lifetime cancer risk from this potential solution and advise the community on the better food source of the two.
A corporation is inspecting solar panels it purchased from a vendor. The shipment usually contains 20 solar panels. During the inspection, a random sample of 7 is selected and tested. Suppose there are 4 defective solar panels in the batch of 20. What is the probability that for a given sample, there will be 1 defective solar panel?
Question 14 In general, which of the following is the best long-term method of preventing the emis- sions of primary air pollutants? use of scrubbers and electrostatic precipitators to remove pollutants from industrial emissions B. use of taller smokestacks to release pollutants from industrial emissions higher into the atmosphere use of fossil fuels to fuel single-occupancy vehicles to reduce pollution from vehicle emissions D. use of air pollution reduction plans that promote the relocation of industrial facto- ries to less-populated areas
Suppose 10 million people are exposed to a carcinogen that poses an individual lifetime (70-yr) cancer risk of 10^-4. (a) How many cancers per year might be caused by this carcinogen?(b) If spending $1 per year per person (for an indefinitely long time) to reduce exposure to that carcinogen reduces that risk to 10^-5, what would be the cost of each cancer avoided?

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