"The Action Level!®"
— Current Quiz


Edited by J. Thomas Pierce, PhD, CIH (1980-2012), DABT (Retired)

“The Action Level!®, a self-study, continuing education program, provides a convenient and interesting opportunity for individuals to expand their knowledge in relevant areas of industrial hygiene, as well as occupational and environmental safety and health. The program is approved by both the American Board of Industrial Hygiene, and the Board of Certified Safety Professionals, which award Certification Maintenance (CM) points and Continuance of Certification (COC) points, respectively, for successful participation.

Participants must read each issue of the Journal, answer “The Action Level!® questions, and return the completed answer sheet at the end of that issue’s “The Action Level!® column. To earn the designated CM or COC credit, an average score of 70 percent or better is required within a 12-month period. Certified Industrial Hygienists and Certified Associate Industrial Hygienists may earn up to 2 points per year. Certified Safety Professionals may earn up to 1.2 points per year.

Points are awarded only four times each year—in March, June, September, and December—to participants who score an average of 70 percent or better within each three-month quarter.  To earn points in any quarter, participants must satisfactorily complete answer sheets for all three months of that quarter.

Beginning in 2016, only calendar year subscriptions running from January 1 to December 31 will be available to participate in
“The Action Level!® program. New participants in the program can enroll at any time, but their enrollment fees will be prorated by the number of quarters they are eligible to participate. 

To enroll,
click here,  read about the program and click on “register” to complete your registration.  The cost is $219 (ACGIH®/AIHA members)/$249 (nonmembers) for one calendar year running January 1 to December 31. Prorations are available for new participants who purchase after January 31.  Nonmembers are encouraged to become members to take advantage of the member discount. For more information regarding ACGIH® membership, call 513-742-2020, or apply online.  

This continuing education program fee is separate from the Journal subscription cost. The fee covers administration costs, and is nonrefundable. 

Answers must be received by the date listed at the end of each quiz.


February 2018 — Volume 15 No 2


Provide FULL NAME and EMAIL information below, then answer the questions and click "Submit".

Evaluation of Low-cost Electro-Chemical Sensors for Environmental Monitoring of Ozone, Nitrogen Dioxide and Carbon Monoxide

Nima Afshar-Mohajer, Christopher Zuidema, Sinan Sousan, Laura Hallet, Marcus Tatum, Ana M. Rule, Geb Thomas, Thomas Peters and Kirsten Koehler

1. Typical concentrations of carbon monoxide (CO) near biomass burning or incomplete combustion processes can result in important exposures. The electrochemical CO sensor is a field-ready and inexpensive device to quickly estimate the ambient CO concentration. However, there is a range concentration in which the electrochemical CO sensor operates reliably. Which of the following ranges of CO concentrations is most applicable to this sensor?




2. The electrochemical oxidative gas sensors can be used for accurate estimation of the tropospheric ozone concentration without substantial bias. True or False?

A Case Report of Personal Exposures to Isoflurane during Animal Anesthesia Procedures

James Fay

3. Halogenated waste anesthetic gas exposure has been associated with reproductive and developmental toxicity. True or False?

4. NIOSH recommends that exposure to halogenated waste anesthetic gas should be limited to:



Assessment of Occupational Exposure to Heat Stress and Solar Ultraviolet Radiation among Groundskeepers in an Eastern Northern Carolina University Setting

Nicole Beck, Jo Anne G. Balanay and Terri Johnson

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Respirable Silica and Noise Exposures among Stone Processing Workers in Northern Thailand

Stephanie K. Sayler, Rachel N. Long, Kowit Nambunmee and Richard L. Neitzel

7. The authors note that there was low self-reported use of which of the following PPE among the stone processing workers?



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Experimental Study on Effects of Drilling Parameters on Respirable Dust Production during Roof Bolting Operations

Hua Jiang, Yi Luo and Joe McQuerrey

9. What is the dusted airflow sequence through the dust collection box?



10. Based on the experiment data, how much reduction in percentage of respirable dust in total dust generated when drilling a roof bolthole can be achieved while adjusting the drilling bite depth from 0.124 to 0.251 cm/rev?



Interlaboratory Comparison for the Determination of the Soluble Fraction of Metals in Welding Fume Samples

Balazs Berlinger and Martin Harper

11. The bioaccessible fraction of a metal is the quantity of its compounds soluble and therefore available for absorption in the target organ. True or False?

12. What temperature is required by the ISO 15202 standard for the determination of soluble compounds of metals and metalloids in workplace air samples?


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Jay M. Kapellusch, Barbara A. Silverstein, Stephen S. Bao, Mathew S. Thiese, Anderw S. Merryweather, Kurt T. Hegmann and Arun Garg

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Experimental Study on Centerline Velocities of a Rectangular Capture Hood under Realistic Conditions

Xinjian He, Braxton V. Lewis and Steven E. Guffey

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Photobiology Eye Safety for Horticultural LED Lighting: Transmittance Performance of Eyewear Protection Using High-irradiant Monochromatic LEDs

Bo-Sen Wu and Mark G. Lefsrud

17. Which of the following instruments was used to measure light passed through various protective eyewear?




18. Numerous references and standards are available to occupational safety and health practitioners to evaluate horticultural LED lamps or lighting systems. True or False?



Deadline for answers is February 28, 2018.

Answers will be available online on March 9, 2018.