25.10.20
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Greg Bignell
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
17 October 2018
Issue Date
Expiration Date
17 October 2028
Caitlyn Pollihan CEO & Executive Director
Greg Bignell
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
October 17, 2018
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
13 February 2008
Issue Date
Expiration Date
Certification Number
30 June 2026
Caitlyn Pollihan CEO & Executive Director
Greg Bignell
#0847 ISA Certified Arborist
ON-1197A
ISA Certified Arborist ®
ISA Certified Arborist ®
February 13, 2008
International Society of Arboriculture
