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Richard Leider
2 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Richard Leider
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
Caitlyn Pollihan CEO & Executive Director
10 February 2027
10 February 2022
Expiration Date
Issue Date
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
February 10, 2022
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Richard Leider
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
30 June 2026
17 February 2020
WE-12936A
Expiration Date
Certification Number
Issue Date
#0847 ISA Certified Arborist
ISA Certified Arborist ®
ISA Certified Arborist ®
February 17, 2020
International Society of Arboriculture
