25.12.4
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CD
Christopher D. Erickson
3 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
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
2 August 2021
Issue Date
Expiration Date
Certification Number
31 December 2027
Caitlyn Pollihan CEO & Executive Director
Christopher D. Erickson
SO-6795B
ISA Board Certified Master Arborist®
ISA Board Certified Master Arborist®
August 2, 2021
International Society of Arboriculture
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
21 February 2014
Issue Date
Expiration Date
18 February 2029
Caitlyn Pollihan CEO & Executive Director
Christopher D. Erickson
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
February 21, 2014
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
14 December 2012
Issue Date
Expiration Date
Certification Number
31 December 2021
Caitlyn Pollihan CEO & Executive Director
Christopher D. Erickson
#0847 ISA Certified Arborist
SO-6795A
ISA Certified Arborist ®
ISA Certified Arborist ®
December 14, 2012
International Society of Arboriculture
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Expired
Expired credential.
