25.10.20
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Suggested Credentials
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CS
Chris Shirring
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
20 June 2024
Issue Date
Expiration Date
20 June 2029
Caitlyn Pollihan CEO & Executive Director
Chris Shirring
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
June 20, 2024
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 February 2022
Issue Date
Expiration Date
Certification Number
30 June 2025
Caitlyn Pollihan CEO & Executive Director
Chris Shirring
#0847 ISA Certified Arborist
OH-6999A
ISA Certified Arborist ®
ISA Certified Arborist ®
February 16, 2022
International Society of Arboriculture
