"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.


May 2017 — Volume 14 No 5


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

Comparison of Coarse Coal Dust Sampling Techniques in a Laboratory-Simulated Longwall Section

Justin R. Patts and Teresa L. Barone

1. Which sampler arrangement approximated the performance of the IOM-MOD for all feed dust sizes and airspeeds?



2. Filter-based samplers should have inlet flow direction parallel to the air flow to prevent anisokinetic sampling due to misalignment. True or False?

Increased Sensitivity of OSHA Method Analysis of Diacetyl and
2,3-Pentanedione in Air

Ryan LeBouf and Michael Simmons

3. Average extraction efficiencies for wet samples were within 10% of dry samples except for which analyte?



4. Methanol could be a better extraction solvent than the 95% ethanol used in OSHA Methods 1013 and 1016 when performing analysis by GC/MS. True or False?

Nonwoven Textile for Use in a Nanoparticle Respiratory Deposition Sampler

Donna J.H. Vosburgh, Jae Hong Park, Levi W.D. Mines, Imali A. Mudunkotuwa, T. Renée Anthony and Thomas M. Peters

5. The commercially available nonwoven textiles did not contain any titanium. True or False?

6. The number of layers of nonwoven textile required to match the NPM criterion varied depending on the material. How many layers were required for the C1 nonwoven textile to have an R squared value of 0.95?



A Comprehensive Assessment of Exposures to Respirable Dust and Silica in the Taconite Mining Industry

Jooyeon Hwang, Gurumurthy Ramachandran, Peter C. Raynor, Bruce H. Alexander and Jeffrey H. Mandel

7. Which of the following is not a subgroup of crystalline?



8. There was little variability between the mines for either respirable dust or respirable silica exposures because the taconite mining and milling processes are similar across all mines. True or False?

Performance of Prototype High-flow Inhalable Dust Sampler in a Livestock Production Facility

T. Renée Anthony, Changjie Cai, John Mehaffy, Darrah Sleeth and John Volckens

9. While the prototype sampler and the IOM provided similar concentrations, endotoxin concentrations differed between samplers, which indicates that:



10. Inhalable dust concentrations between the high flow prototype sampler and the IOM sampler agreed over the range concentrations reasonably anticipated in most livestock production exposures. True or False?

Elemental Properties of Coal Slag and Measured Airborne Exposures at Two Coal Slag Processing Facilities

Christopher Mugford, Randy Boylstein and Jenna L. Gibbs

11. Causality of pneumoconiosis (as in silicosis) can be dismissed by knowing for “coal slag-only” exposures that the silica content is less than 1% overall. True or False?

12. Which of the following metals was not identified as present?




Agreement between Two Methods for Retrospective Assessment of Occupational Exposure Intensity to Six Chlorinated Solvents: Data from The National Birth Defects Prevention Study

Candice Y. Johnson, Carissa M. Rocheleau, Misty J. Hein, Martha A. Waters, Patricia A. Stewart, Christina C. Lawson, Jennita Reefhuis and The National Birth Defects Prevention Study

13. The wide variety of work schedules encountered in population-based studies is what makes retrospective exposure assessment challenging in occupational epidemiology. True or False?

14. The industrial hygiene rating for mothers’ jobs held during pregnancy for probability of exposure did not include which of the following?




Respirable Size-selective Sampler for End-of-Shift Quartz Measurement: Development and Performance

Taekhee Lee, Larry Lee, Emanuele Cauda, Jon Hummer and Martin Harper

15. Which of the following is the best relationship typically when a new sampling feature is compared to an established feature?




16. The use of the EoS cyclone induced respirable dust mass concentration results similar to, but significantly larger (5%) than those obtained from samples collected with 10-mm nylon cyclones. True or False?

Understanding Workers’ Exposure: Systematic Review and Data-analysis of Emission Potential for NOAA

E. Kuijpers, C. Bekker, D. Brouwer, M. le Feber and W. Fransman

17. Which of the following is not an emission originating from handling and transfer of bulk manufactured nanomaterial powders (SD2)?




18. For processes with liquids (SD3b), it is generally not possible to distinguish emissions for spraying (propellant gas, (high) pressure and pump), sonication and brushing/rolling. True or False?



Deadline for answers is May 31, 2017.

Answers will be available online on June 9, 2017.