25.10.19
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JG
James G. Retzlaff
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
9 November 2016
Issue Date
Expiration Date
31 December 2026
Caitlyn Pollihan CEO & Executive Director
James G. Retzlaff
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
November 9, 2016
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
12 May 2010
Issue Date
Expiration Date
Certification Number
30 June 2025
Caitlyn Pollihan CEO & Executive Director
James G. Retzlaff
#0847 ISA Certified Arborist
RM-7351A
ISA Certified Arborist ®
ISA Certified Arborist ®
May 12, 2010
International Society of Arboriculture
