25.9.12
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Joshua Sullivan
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 August 2022
Issue Date
Expiration Date
26 August 2027
Caitlyn Pollihan CEO & Executive Director
Joshua Sullivan
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
August 26, 2022
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
25 February 2020
Issue Date
Expiration Date
Certification Number
30 June 2026
Caitlyn Pollihan CEO & Executive Director
Joshua Sullivan
#0847 ISA Certified Arborist
SO-10457A
ISA Certified Arborist ®
ISA Certified Arborist ®
February 25, 2020
International Society of Arboriculture
