25.13.21
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Suggested Credentials
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TS
Timothy Shamus Aaron O'Connor
3 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Certified Tree Climber
By successfully meeting ISA Certified Tree Climber certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
22 December 2020
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Timothy Shamus Aaron O'Connor
PR-5056AT
ISA Certified Tree Climber
ISA Certified Tree Climber
December 22, 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
14 January 2016
Issue Date
Expiration Date
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Timothy Shamus Aaron O'Connor
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
January 14, 2016
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
6 December 2014
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Timothy Shamus Aaron O'Connor
#0847 ISA Certified Arborist
PR-5056A
ISA Certified Arborist ®
ISA Certified Arborist ®
December 6, 2014
International Society of Arboriculture
