25.14.29
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NP
Nathen P. Macklin
1 Credential
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Nathen P. Macklin
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
31 December 2025
15 December 2010
ON-1441A
Expiration Date
Certification Number
Issue Date
#0847 ISA Certified Arborist
ISA Certified Arborist ®
ISA Certified Arborist ®
December 15, 2010
International Society of Arboriculture
