Western Chapter ISA Certified Tree Workers are individuals who have a minimum of 18 months experience professionally climbing trees in a safe and efficient manner to perform tree care. They have knowledge in the major aspects involved in tree care including, tree biology, cabling, planting, pruning and safety. Applicants are required to complete a written knowledge based exam and a practical skills evaluation which includes knot tying. Skills evaluations are conducted in either climbing or aerial lift operations. NOTE: THE WESTERN CHAPTER’S CERTIFIED TREE WORKER PROGRAM IS INDEPENDENT OF THE ISA’S CREDENTIAL.

Click here for a complete application packet
Click here for practical skill evaluation for climbing
Click here for practical skill evaluation for aerial lift
Click here for a list of approved knots
Click here to download a CTW Patch Order
Click here to download an Exam Retake Form

Interested in volunteering as a judge? Click here to complete a judge application

The Arborist Certification Program is a voluntary effort among professionals in the tree care industry to establish a meaningful standard of quality in arboricultural work, to promote and encourage continuing education, and to provide the public with a mechanism for identifying qualified arborists.

Click here for more information on the program
Click Here to Register Online for an ISA Arborist Exam
Click Here to Find an ISA Certified Arborist in Your Area
Check Your CEU Status On Line New!

The Western Chapter ISA has taken the responsibility of assigning continuing education hours (CEUs) for educational programs in the states of Arizona, California, Hawaii and Nevada. We would be pleased to assign CEU numbers to programs you present if they are applicable. Offering credit for your programs can make them more attractive to potential attendees and registrations may be increased.

Click here to download an application for continuing education units
Click here to download a blank CEU Sign in Sheet

Arizona
California – Southern
California – Central
California – Northern
Hawaii
Nevada – Southern
Nevada – Northern


Click on the region listed above to download the corresponding list.

February 20, 2010 – Phoenix, AZ – All Levels
March 12, 2010, Henderson, NV – Arborist Only
March 27, 2010 – Carmichael, CA – All Levels
April 17, 2010 – Honolulu, HI – All Levels
April 17, 2010 – Phoenix, AZ – CA Only
May 8, 2010 – San Diego, CA – All Levels
July 10, 2010, Concord, CA – All levels
July 17, 2010 – Santa Barbara, CA – All Levels
July 24, 2010, Prescott, AZ - CTW Only
September 11, 2010, Santa Rosa, CA – Arborist Only
September 18, 2010 – Anaheim, CA – All Levels
October 9, 2010 – Rio Rico, AZ – CA Only
October 16, 2010 – Chico, CA – All Levels
November 20, 2010 – Phoenix, AZ – All Levels
November 20, 2010 – Riverside, CA – All Levels

TENTATIVE ADDITIONAL 2010 EXAMS:
October 23, 2010 – Las Vegas, NV – CA Only
November 13, 2010 – San Francisco, CA - All Levels