25.13.6
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Suggested Credentials
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CW
Clinton Williams
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
3 January 2024
Issue Date
Expiration Date
Certification Number
31 December 2027
Caitlyn Pollihan CEO & Executive Director
Clinton Williams
MI-4585AU
ISA Certified Arborist Utility Specialist®
ISA Certified Arborist Utility Specialist®
January 3, 2024
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
9 March 2022
Issue Date
Expiration Date
9 March 2027
Caitlyn Pollihan CEO & Executive Director
Clinton Williams
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
March 9, 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
30 July 2021
Issue Date
Expiration Date
Certification Number
31 December 2027
Caitlyn Pollihan CEO & Executive Director
Clinton Williams
#0847 ISA Certified Arborist
MI-4585A
ISA Certified Arborist ®
ISA Certified Arborist ®
July 30, 2021
International Society of Arboriculture
