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Suggested Credentials
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DS
Douglas Still
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
13 December 2014
Issue Date
Expiration Date
20 January 2030
Caitlyn Pollihan CEO & Executive Director
Douglas Still
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
December 13, 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
17 October 1998
Issue Date
Expiration Date
Certification Number
31 December 2026
Caitlyn Pollihan CEO & Executive Director
Douglas Still
#0847 ISA Certified Arborist
NY-0625A
ISA Certified Arborist ®
ISA Certified Arborist ®
October 17, 1998
International Society of Arboriculture
