Meet Our Arborists

At Arbortek we follow the ISA Code of Ethics seriously. Our Arborist’s are ISA Certified and we proudly support ongoing development and education. 

Certified Arborist Bill Berridge | Arbortek Trees

Meet Our Arborist: Bill Berridge is the Division Manager for Arbortek Trees. Bill is responsible for the sales and operations for our tree related services. Bill received his degree from Cal Poly San Luis Obispo in Ornamental Horticulture. In addition, Bill is an I.S.A certified arborist (#WE-5525).

To earn an ISA Certified Arborist® credential, you must be trained and knowledgeable in all aspects of arboriculture. An ISA Certified Arborist® must first meet all requirements to be eligible for the exam, which includes three or more years of full-time, eligible, practical work experience in arboriculture and/or a degree in the field of arboriculture, horticulture, landscape architecture, or forestry from a regionally accredited educational institute.

After the field work requirement is complete, the arborist can take the ISA exam. The certification covers a large number of topics giving the candidates flexibility in the arboricultural profession. The arborist will be tested in:

  • Soil Management
  • Identification and Selection
  • Installation and Establishment
  • Safe Work Practices
  • Tree Biology
  • Pruning
  • Diagnosis and Treatment
  • Urban Forestry
  • Tree Protection
  • Tree Risk Management

Read more about the importance of an ISA Certification, how to become certified, and the benefits of working with a certified arborist here.

We provide Tree Services to the following areas:

  • San Jose
  • Santa Clara
  • Cupertino
  • Sunnyvale
  • Mountain View
  • Campbell
  • Palo Alto
  • Los Altos Hills
  • Loyola
  • Willow Glen
  • Milpitas
  • Los Gatos