Professional Training and Certification


Occupational Hearing Conservation approved by CAOHC

CAOHC Certification

Hearing Certification Course Dates:

October 12th, 13th, & 14th 2022 

Spring 2023 TBA 

Course Location:


The courses are held at the Holiday Inn in Portland, Oregon.  Conveniently located 2 miles south of the Portland International Airport. 


Holiday Inn

8439 NE Columbia Court

Portland, OR 97220


Call 503-256-5000 for reservations. 


  NIOSH Training available through Palmer Associates     



Course Director: 


Rodney Atack, Ph.D., served on the Council For Accreditation In Occupational Hearing Conservation for 10 years and Chaired the Council two of those years.  He played a significant role in developing the Army hearing conservation while Chief of the Bio-acoustic Division, US Army Environmental Hygiene Agency.  He also created the first Audiometric Technician course.  He has a wealth of practical experience in hearing conservation and is considered an excellent teacher.