25.13.21
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RT
Rico Thorsen
1 Credential
1 Issuer
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 November 2011
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Rico Thorsen
#0847 ISA Certified Arborist
PN-7293A
ISA Certified Arborist ®
ISA Certified Arborist ®
November 19, 2011
International Society of Arboriculture
