25.6.19
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RS
Ryan Sahs
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
9 December 2021
Issue Date
Expiration Date
9 December 2026
Caitlyn Pollihan CEO & Executive Director
Ryan Sahs
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
December 9, 2021
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
21 March 2019
Issue Date
Expiration Date
Certification Number
30 June 2025
Caitlyn Pollihan CEO & Executive Director
Ryan Sahs
#0847 ISA Certified Arborist
WI-1344A
ISA Certified Arborist ®
ISA Certified Arborist ®
March 21, 2019
International Society of Arboriculture
