3- Self-Test questions

Question 1

What does an OEHSA accomplish?

Answer 1

Supports OEH RM activities on military installations.
(2) Documents environmental conditions.
(3) Identifies OEH threats.
(4) Guides OEH data collection activities for HRA.
(5) Is a key element of the HRA process and assists health risk assessors to make RM decisions
concerning OEH threats.

Question 2

What are the five elements of an exposure pathway that must be considered?

Answer 2

Source of an OEH threat release.
(2) Environmental media.
(3) Health threat.
(4) Route of exposure.
(5) PAR.

Question 3

What OEHSA tool, often described as the defining element of an OEHSA, provides a visual
representation of all OEH threats that have a complete or potentially complete exposure pathway
to human receptors?

Answer 3

CSM.

Question 4

What is a Complete Exposure Pathway?

Answer 4

All five elements of an exposure pathway are present as determined by professional judgment, initial field
screening, modeling, and so forth.

Question 5

What is the major difference in the pre-deployment/baseline activities step of an OEHSA
performed in-garrison versus deployed?

Answer 5

Typically, the amount of information readily available on the site.

Question 6

What is the objective of site sectoring?

Answer 6

To designate sectors containing significant known OEH threats (e.g., IH shops, flight line, HAZMAT
storage) and major PARs (e.g., housing, child development centers, admin offices, tent city, and cantonment areas) by establishing logical boundaries to delineate and separate known OEH threats and
PARs.

Question 7

What is the recommended radius distance for evaluating off-site OEH threats to the base
population?

Answer 7

A radius of 10 kilometers around the installation.

Question 8

What is the term for a quick qualitative exposure assessment that is used to determine whether or
not an exposure pathway is complete?

Answer 8

Initial assessment.

Question 9

What two RM concepts are used to prioritize a special OEH assessment of CSM exposure
pathways?

Answer 9

Probability and severity of each exposure pathway in the CSM.

Question 10

Once you have a consolidated CSM and the OEHSA survey in DOEHRS is complete, to whom
are you required to communicate the outcome and findings of the OEHSA survey?

Answer 10

The OEWHG.

Question 11

When recommending engineering controls, what are three approaches that can be used to control
OEH hazards?

Answer 11

Engineering controls.
(2) Administrative controls.
(3) PPE controls.

Question 12

List the three types of OEH controls in order of priority.

Answer 12

Substitution, isolation, and ventilation.

Question 13

What three parameters can be applied to assess the effectiveness of a control?

Answer 13

(1) The control must be able to mitigate the OEH threat exposure to an acceptable level.
(2) The responsible organization must be able to reasonably implement the control option.
(3) The control must be practical when considering cost and time associated with implementation.

Question 14

What four concepts describe the quality of PPE chemical resistance?

Answer 14

Permeation, breakthrough time, penetration and degradation qualities.

Question 15

Describe permeation as it relates to PPE.

Answer 15

The process by which a chemical dissolves in or moves through a material on a molecular basis.

Question 16

Describe breakthrough time as it relates to PPE.

Answer 16

The time it takes a chemical to permeate completely through a material.

Question 17

What are some of the physiological effects of wearing PPE?

Answer 17

Changes in heart rate, increase water loss, impair vision, mobility and communication.

Question 18

List the steps generally taken by BE personnel to assess PPE needs as required by OSHA and Air
Force PPE standards.

Answer 18

(1) Conduct a walk-through to identify sources of hazards.
(2) Organize and analyze findings to determine how to control the hazards.
(3) Select PPE that ensures a level of protection greater than the minimum required.
(4) Fit the user and ensure a PPE training program is in place that addresses proper PPE care and use.

Question 19

What are the five minimum PPE training requirements that BE is responsible to provide to
workers?

Answer 19

PPE training, as a minimum, should include the following:
(1) When PPE is necessary.
(2) What PPE is necessary.
(3) How to properly don, doff, adjust, and wear PPE.
(4) The limitations of the PPE.
(5) The proper care, maintenance, useful life and disposal of the PPE.

Question 20

The general guidelines for selecting PPE include what six factors?

Answer 20

(1) Clothing design, (2) material chemical resistance, (3) physical properties, (4) ease of determination, (5)
cost, and (6) chemical protective clothing standards.

Question 21

When selecting PPE, why must resistance be a consideration?

Answer 21

At a minimum, PPE must be resistant enough to protect the worker while performing the hazardous
operation.

Question 22

What is the best source of information on material compatibility with chemical hazards?

Answer 22

The manufacturer of the selected clothing.