25.9.12
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DM
David M. O'Connor
2 Credentials
1 Issuer
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
26 April 2019
Issue Date
Expiration Date
26 April 2029
Caitlyn Pollihan CEO & Executive Director
David M. O'Connor
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
April 26, 2019
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
12 July 2018
Issue Date
Expiration Date
Certification Number
31 December 2027
Caitlyn Pollihan CEO & Executive Director
David M. O'Connor
#0847 ISA Certified Arborist
NY-6290A
ISA Certified Arborist ®
ISA Certified Arborist ®
July 12, 2018
International Society of Arboriculture
