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Daniel Sullivan
3 Credentials
1 Issuer
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
30 August 2023
Issue Date
Expiration Date
Certification Number
30 June 2027
Caitlyn Pollihan CEO & Executive Director
Daniel Sullivan
WE-13404AU
ISA Certified Arborist Utility Specialist®
ISA Certified Arborist Utility Specialist®
August 30, 2023
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
3 March 2022
Issue Date
Expiration Date
3 March 2027
Caitlyn Pollihan CEO & Executive Director
Daniel Sullivan
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
March 3, 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
16 March 2021
Issue Date
Expiration Date
Certification Number
30 June 2027
Caitlyn Pollihan CEO & Executive Director
Daniel Sullivan
#0847 ISA Certified Arborist
WE-13404A
ISA Certified Arborist ®
ISA Certified Arborist ®
March 16, 2021
International Society of Arboriculture
