25.10.20
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Patrick Michael Van Horne
3 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
21 June 2017
Issue Date
Expiration Date
21 June 2027
Caitlyn Pollihan CEO & Executive Director
Patrick Michael Van Horne
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
June 21, 2017
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
14 March 2009
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Patrick Michael Van Horne
WE-8511AU
ISA Certified Arborist Utility Specialist®
ISA Certified Arborist Utility Specialist®
March 14, 2009
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 July 2008
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Patrick Michael Van Horne
#0847 ISA Certified Arborist
WE-8511AU
ISA Certified Arborist ®
ISA Certified Arborist ®
July 19, 2008
International Society of Arboriculture
