ISA Compliance Program Series Volume 1: ISA Code of Ethics

by Rosa Gutierrez, Compliance Services Manager at ISA

ISA is responsible for maintaining and supporting the integrity of our credentials, and we accomplish this goal in many ways. One resource we utilize is our internal compliance program which has four main areas of focus: facilitating compliance with ANSI/ISO standards, management of the ISA Code of Ethics charges and subsequent cases, management of any “appeals” of those outcomes and the protection of the logos used to identify individuals holding credentials. Read More "ISA Compliance Program Series Volume 1: ISA Code of Ethics"

Seattle Regional TCC

Margo Thorp Margo Thorp
PNW-ISA Education Program Coordinator
Learn more about Margo Thorp.

The Seattle Regional Tree Climbing Competition at Volunteer Park turned out great. We had 26 men and 4 ladies compete for prizes and recognition. Big thanks to our premier sponsors WTD, Davey, Bartlett, Seattle Parks Department and all the others that made the event possible.

Roger Barnett posted many photos on his facebook page, check it out! Don’t forget to share your photos of the event!

A big thanks to Justina Harris Kraus for coordinating this TCC!

Update from the Board of Directors on the Executive Director Search

In early August 2019, the position announcement for the PNW-ISA Executive Director was posted widely on job search websites, social media, and with partner organizations.   As of 8/29, 70+ candidates had applied. The posting period will close on September 1st. In September candidates will be screened, and the most qualified will move through phone and video interviews, to in-person interviews during this year’s Annual Training Conference in Eugene.  We anticipate that the new Executive Director will be hired by November this year.

Farewell to Patty Williams

Patty Williams, our executive director, let the Board know that she will be leaving PNW-ISA at the end of September this year. Patty has served our Chapter since January 2002 and has grown this organization into what it is today. Patty’s work this year has helped us to transition away from a physical to a virtual office environment and has updated many of our systems and practices, positioning the Chapter for growth in the coming years. If you would like to reach out to Patty with any words of thanks, she can be reached at until September 27th.

PNW-ISA Executive Director Position Announcement

PNW-ISA is seeking an Executive Director (ED) who is a highly motivated team builder and leader with a vision for expanding the reach and impact of our organization for current and future members, and the arboriculture industry in our region. The overarching mandate for the ED will be to implement a business model furthering initiatives outlined in the Chapter strategic plan and directing the organization into its next phase of growth and sustainability. Read More "PNW-ISA Executive Director Position Announcement"

Updates from the Board of Directors

Phil Bennett Phil Bennett
Learn more about Phil Bennett.

Transition Update

In February 2019, the Board of Directors reviewed the results of an Organizational Assessment completed by Loveall Price & Associates, a nonprofit transitional consulting firm. The Board accepted the recommendations in the assessment, including initiatives to update operational systems, and move towards a virtual office for the Chapter. Staff have been working diligently to implement those recommendations.

PNW-ISA has retained Loveall Price and Associates to assist with an Executive Director Search that will commence later this summer.  We will hire a new executive Director for the Chapter by the end of 2019.

PNW-ISA Board of Directors Positions Available

If you are interested in serving on the PNW-ISA Board of Directors, please complete the Board interest form.  A Board Position may be available prior to this year’s Annual Training Conference (ATC), and elections will be held for several positions at ATC.

TREE Fund Summer Update

Evan Sussman Evan Sussman
Board Liaison to the TREE Fund
Learn more about Evan Sussman.

Greetings arborists! I wanted to write a brief update on the on goings at the TREE Fund. For anyone who isn’t familiar with the TREE Fund, they manage endowment funds that support research and education for arboriculture. A lot of the current and past research that we base our practices on has been funding in part or whole by the TREE Fund.


Webinars are in full swing. These are a great way to stay in the loop with current TREE Fund researcher’s works, and to get free CEUs. Upcoming this year are:

Remediating Compacted Soils Compromised by Urban Construction
Dr. Nina Bassuk, Cornell University
June 11, 2019, 11:00 am PST

Can We Vaccinate Trees to Protect Against Diseases?
Dr. Glynn Percival, Bartlett Tree Experts Research Laboratory, UK
August 29, 2019, 10:00 am PST

Health Benefits of City Trees: Research Evidence & Economic Values
Dr. Kathleen Wolf, University of Washington
November 19, 2019, 11:00 am PST

All of these webinars are good for 1 free CEU!  You can access the archive of previous webinars at Additionally, you can stay up to date on future webinar offerings at that link or by following our PNW-ISA Facebook page.

Read More "TREE Fund Summer Update"

PNW-ISA 2nd Women’s Climbing Workshop A Success!

Melissa Amrhein
PNW-ISA Education Program Manager
Learn more about Melissa Amrhein.

PNW-ISA hosted its second successful Women’s Tree Climbing Workshop on June 7-9, 2019 in Seattle, WA. International Tree Climbing Championship competitors Bear LeVangie and Melissa LeVangie flew in from the east coast to teach along with a top notch instructional team including Rebecca Seibel-Hunt, Kate Tarkington, Jamilee Kempton, Kali Alcorn, Krista Strating and Maria Tranguch. The group was engaging, enthusiastic, genuine and knowledgeable. What a team!

Participation was diverse. Women traveled from out of state and out of country to participate. Experience levels ranged from no previous climbing to those that wanted to improve specific skills. Every participant made big leaps towards their goals. It was empowering to observe the transformations that occurred in such a short period of time.
Read More "PNW-ISA 2nd Women’s Climbing Workshop A Success!"

ANSI A300 Standard

Zeb Haney Zeb Haney
Tree Resource
Learn more about Zeb Haney.

Twice each year a group of arborists meet to discuss the practice of arboriculture. These are your peers and represent large utility companies, small businesses, and public entities. These hardworking volunteers are collectively known as the Accredited Standards Committee (ASC) A300.

The committee develops consensus based on current research and practices that cover ten aspects of tree care. Each standard is meant to aid in establishing standards and written specifications for performing tree care assignments. Read More "ANSI A300 Standard"

Treasure Valley Tree Selection Guide: A Process of Transformation

Mary Jane Marlow Mary Jane Marlow
Canopi Design
Learn more about Mary Jane Marlow.

The Cities of Boise, Caldwell, Eagle, Kuna, Meridian and Nampa, Idaho are proud of their trees! It was with this sentiment of value and appreciation for our trees that the TV Tree Selection Guide was created. Based largely on the original version from the Boise Parks & Recreation Department’s Tree Selection Guide developed by the Urban Forestry Unit in 1995, the new guide was fashioned.

It was time…time to broaden tree species selections to include new cultivars. And, remove old ones that were not performing well. This was a labor of satisfaction for everyone involved. Read More "Treasure Valley Tree Selection Guide: A Process of Transformation"