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JC
Jonathon Clase
4 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Board Certified Master Arborist®
By successfully meeting ISA Board Certified Master Arborist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
19 November 2021
Issue Date
Expiration Date
Certification Number
31 December 2027
Caitlyn Pollihan CEO & Executive Director
Jonathon Clase
MI-4115BU
ISA Board Certified Master Arborist®
ISA Board Certified Master Arborist®
November 19, 2021
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Certified Arborist Utility Specialist®
By successfully meeting ISA Certified Arborist Utility Specialist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
13 June 2020
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Jonathon Clase
MI-4115AU
ISA Certified Arborist Utility Specialist®
ISA Certified Arborist Utility Specialist®
June 13, 2020
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Tree Risk Assessment Qualification®
By successfully meeting ISA Tree Risk Assessment Qualification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
21 October 2015
Issue Date
Expiration Date
31 December 2025
Caitlyn Pollihan CEO & Executive Director
Jonathon Clase
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
October 21, 2015
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Certified Arborist ®
By successfully meeting ISA Certified Arborist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
19 August 2011
Issue Date
Expiration Date
Certification Number
31 December 2023
Caitlyn Pollihan CEO & Executive Director
Jonathon Clase
#0847 ISA Certified Arborist
MI-4115AU
ISA Certified Arborist ®
ISA Certified Arborist ®
August 19, 2011
International Society of Arboriculture
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Expired
Expired credential.
