25.14.22
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WG
William Gambone
2 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
William Gambone
Has Earned the Credential
ISA Board Certified Master Arborist®
By successfully meeting ISA Board Certified Master Arborist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
Caitlyn Pollihan CEO & Executive Director
30 June 2025
30 June 2022
PD-1797B
Expiration Date
Certification Number
Issue Date
ISA Board Certified Master Arborist®
ISA Board Certified Master Arborist®
June 30, 2022
International Society of Arboriculture
warning
Expired
Expired credential.
The International Society of Arboriculture
Hereby Announces That
William Gambone
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
Caitlyn Pollihan CEO & Executive Director
30 June 2023
27 January 2008
PD-1797A
Expiration Date
Certification Number
Issue Date
#0847 ISA Certified Arborist
ISA Certified Arborist ®
ISA Certified Arborist ®
January 27, 2008
International Society of Arboriculture
warning
Expired
Expired credential.
