EV551 Hazardous Material Assessment Homework- Southeast Missouri State University
1) Which of the following is not a part of the HAZWOPER process:
• Recognition of hazards
• Evaluation of hazards
• Control of hazards
• Information gathering
• Safety from hazards
• All are part of the process
2) Hazardous waste site workers must:
• Receive 40-hour OSHA 1910.120 training plus 24 hours of field supervision if exposed over the PEL
• Receive 40-hour training plus 8 hours field supervision if exposed below the PEL and when respirators are not required
• 8-hour annual refresher training
• All of the above
3) First Responder Operations level training allows persons to:
• Witness or discover a release
• Perform defensive actions
• Stop the release
• A and B are true
• All of the above
4) Recognition of hazards includes:
• Identifying the materials involved in the release
• Identifying the degree of hazards present
• Provide the level of protection needed for site workers
• A and B are correct
• All of the above
5) The most important response activity at a hazardous waste work site is:
• Evaluation of hazards
• Control of hazards
• Recognition of hazards
• Safety precautions
6) Frequent hazard types found at response sites include:
• Physical hazards
• Biological hazards
• Chemical hazards
• Mechanical hazards
• All of the above
7) The purpose of initial control activities is to:
• Immediately assess clean up alternatives
• Provide time to responders to address long-term hazards
• Slowly size up response activities
• Both A and B are correct
• None of the above
8) Spill reporting is covered by which of these federal regulations:
• Superfund
• DOT
• RCRA
• Clean Water Act
• A, B, and D are correct
9) The effects of toxic materials on the human body are determined by:
• Routes of exposure
• Dose
• Duration and frequency of exposure
• All of the above
10) What are the four major pathways that chemical substances can enter the body?
• ___________________________________________________
• ___________________________________________________
• ___________________________________________________
• ___________________________________________________
11) What is the primary route of exposure to hazardous waste site workers or incident responders?
• Ingestion
• Dermal absorption
• Inhalation
• Both a and b are correct
12) Dermal absorption may occur with which form(s) of a chemical:
• Solid
• Liquid
• Aerosol
• Mist
• All of the above
13) The dose-response curve illustrates:
• The indirect relationship between dose and response
• The direct relationship between dose and response
• The average number of affected individuals
• None of the above
14) For most chemicals, a low dose does that does not show an appreciable hazard to exposed individuals is called the:
• LOAEL
• NOAEL
• IDLH
• Sensitivity
15) If multiple chemicals are present in a work zone, the threshold level:
• Is based on the most hazardous chemical present
• Is based on the susceptibility of the exposed population
• Can not be accurately determined
• Is based on laboratory experiments
16) Potentiation effects is defined as:
• The combined effects of two chemicals equals the effects of each acting alone
• The combined effect of two chemicals has an effect greater than the sum of the two individual chemicals
• One chemical is usually not toxic by itself, but it increases the toxicity of the second chemical
• None of the above
17) A PEL is:
• Permitted educational limits
• Permissible exposure limits
• Without regulatory authority
• A toxicity rating based on the concentration needed to cause death in 50% of exposed persons
• B and C are correct
18) The federal agency responsible for determining PEL values is:
• ACGIH
• NIOSH
• OSHA
• EPA
19) The OSHA PEL-C value defines a limit that:
• May be exceeded for a 15-minute exposure time
• Requires a one-hour interval with no exposure
• May be used as a peak exposure limit over an 8-hour workday
• May never be exceeded during the workday
20) Ionizing radiation consists of the following:
• Alpha particles
• Beta particles
• Gamma rays
• Microwaves
• Only A, B, and C are correct
21) Gamma radiation can:
• Pass through PPE
• Easily penetrate the body and be scattered and absorbed
• Travel long distances
• All of the above
• Only A and C are correct
22) The greatest allies an individual has available for protection against ionizing radiation include:
• Time
• Distance
• Shielding
• All of the above
23) For a chemical to be flammable, it must:
• Be in a concentration above the UFL
• Have a proper fuel-to-air ratio for combustion
• Be found at a concentration below the LFL
• All of the above
24) A reactive hazard that undergoes reaction may cause:
• An increase in pressure
• An increase in heat production
• An increase in chemical vapor production
• All of the above
• Only A and C are correct
25) Corrosive hazards are difficult to control because they:
• Cause structural damage to skin and containers
• Only act as irritants
• Act as oxidizers
• All of the above
• Both A and C are correct
26) Irritants are solids, liquids or gases that:
• Must have direct contact with tissues to cause an effect
• Impair judgment processes in exposed individuals
• Increases fluid levels within affected tissues
• None of the above
27) The physical and chemical properties of a hazardous material determine:
• Environmental movement
• Environmental behavior
• Degree of hazard
• All of the above
• Both B and C are correct
28) A material with a specific gravity greater than 1 will:
• Float on water
• Dissolve in water
• Sink in water
• Not enter groundwater.
29) A material, such as chlorine, has a vapor density greater than 1. This material will:
• Rise into the air
• Rapidly disperse in ambient air
• Settle in low points of the topography
• Increase the pressure of the atmosphere
30) Physical hazards are of concern to response workers because they:
• Encounter conditions that are out of their control
• Increase the potential for accidents
• Decrease the need for PPE
• Both A and B are correct
• All of the above
31) Personal protective equipment decreases accident potential by:
• Increasing movement
• Increasing visibility
• Reducing heat stress
• Both A and B are correct
• None of the above
32) Excavation and trenching operations offer special problems to hazardous site workers. Safety requirements for these operations include:
• Shoring and sloping activities
• Placement of tools within 2 feet of the edge for accountability and access
• Covering materials to keep rain out
• All of the above
33) Heat stress hazards result in an alteration in internal body temperature. Cooling mechanisms include:
• Blood flow changes
• Perspiration
• PPE
• Both A and B are correct
• None of the above
34) Noise hazards may cause injury by:
• Interfering with communication
• Increasing stress levels
• Causing short-term, long-term or permanent hearing loss
• All of the above
• None of the above
35) Basic types of noise exposure that can be found at a hazardous work site include:
• Impact noise
• Intermittent noise
• Continuous noise
• Both A and B are correct
• All of the above
36) If A ____ dBA level is exceeded, a Hearing Conservation Program must be established.
• 80
• 85
• 90
• 140
37) No individual at a work or response site may be exposed to a sound level above ____ dBA without ear protection.
• 120
• 100
• 140
• 130
38) Individuals are exposed to various sound levels during the workday, therefore, a combined exposure level must be calculated for site personnel. If the Total Exposure value exceeds ____, the allowable daily noise level has been exceeded.
• .1
• 1
• 10
• None of the above
39) Biological hazards at a hazardous waste site do not include:
• Viral contaminants
• Fungal growths
• Allergic reactions
• Snake bites
• None of the above
40) NIOSH determines exposure limit values for:
• Inorganic contaminants only
• 10-hour workdays, 50-hour work weeks
• 10-hour workdays, 80-hour work weeks
• IDLH environments.