25.14.15
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Greg Treadwell
1 Credential
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Greg Treadwell
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 2025
21 June 2016
TX-4257A
Expiration Date
Certification Number
Issue Date
#0847 ISA Certified Arborist
ISA Certified Arborist ®
ISA Certified Arborist ®
June 21, 2016
International Society of Arboriculture
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Expired
Expired credential.
