Dan Sorenson

Dan Sorenson is an ISA certified arborist. To obtain certification he had to pass a lengthy exam covering a wide range of topics that included such things as tree biology, pruning, plant health care, tree risk assessment and safety. A continuing education program is required to maintain certification. This assures you that you are hiring someone from the local Portland area with up to date tree care knowledge and experience. We are also qualified to do Tree Risk Assessment. ISA qualification for arborists. Tree risk assessment can provide tree owners and risk managers with the information to make informed decisions to enhance tree benefits, health, and longevity. We go out on a limb to provide customer satisfaction and are licensed, bonded and insured.

Why Hire an Arborist?

An arborist, by definition, is an individual trained in the art and science of planting, caring for, and maintaining individual trees. Arborists are knowledgeable about the needs of trees and are trained and equipped to provide proper care. Hiring an arborist is a decision that should not be taken lightly.

Proper tree care is an investment that can lead to substantial returns. Well-cared-for trees are attractive and can add considerable value to your property. Poorly maintained trees can be a significant liability. Pruning or removing trees, especially large trees, can be dangerous work. Tree work should be done only by those trained and equipped to work safely in trees.

What Is a Certified Arborist?

Certified Arborists are individuals who have achieved a level of knowledge in the art and science of tree care through experience and by passing a comprehensive examination developed by some of the nation’s leading experts on tree care. Certified Arborists must also continue their education to maintain their certification and adhere to a Code of Ethics. Therefore, they are more likely to be up to date on the latest techniques in arboriculture.

Becoming an ISA Certified Arborist is a voluntary process through which individuals can measure their knowledge and competence required to provide proper tree care. ISA Certification is not government-sponsored or government-endorsed; it is administered by the International Society of Arboriculture as a way for tree care professionals to demonstrate their commitment to the profession and the industry.

Certification is not a measure of standards of practice. Certification can attest to the tree knowledge of an individual but cannot guarantee or ensure quality performance.