Acorn Management Biographys


Jay Bate, Owner / Arborist

ISA Certified Arborist WE-1257A

TRAQ Qualified (Tree Risk Assessment Qualified)

California Department of Pesticide Regulation Qualified Applicator License 134538

State of California C-61 Contractors License 953007

Jay co-founded Acorn Arboricultural Services, Inc. As owner of Acorn Arboricultural Services, Inc. Jay oversees all company operations. Jay has 30 years of experience in the Sacramento regions tree care industry. Having started out as an entry level tree crew grounds worker. Jay worked his way up the ladder as a climber, crew foreman, to a production manager position. In addition, Jay earned his State of California QAL license and gained experience working as a Plant Health Care Applicator. Along the way Jay also worked as a tree maintenance sales representative and consulting arborist / project arborist on many commercial and residential development projects throughout the Sacramento region. Jay’s passion for arboriculture is evident and it is passed on into the company’s culture.


Delinda Bate Owner / Controller

Delinda co-founded Acorn Arboricultural Services, Inc. As owner of Acorn Arboricultural Services, Inc. Delinda is responsible for overseeing all accounting, human resources, and administrative functions within the business. Throughout her 24-year career in the tree care industry she has worked as a receptionist / scheduler, Plant Health Care Department Manager, Office Manager / Controller. During storm emergencies when all hands were needed Delinda pitched in and worked with the tree crews helping with clean up. Delinda is personable and nurturing, while also being strong and tenacious. She keeps and has her hands on the pulse of the business.


Phillip Dufort Owner / Arborist

ISA Certified Arborist WE-9726A

TRAQ Qualified (Tree Risk Assessment Qualified)

Phillip has 33 years of experience in the Sacramento regions tree care industry. Phil started his career with Sta-Green Tree Service in Carmichael and quickly became the best climber in the company, lead foreman and one of the top climbers in the area. In the early 1990s Phil competed in several International Society of Arboriculture (ISA) Western Chapter Tree Climbing

Competitions where he placed in several categories. Phil has extensive field and supervisory experience in all phase of tree care operations. Phil currently serves as one of three sales representatives in the company and his responsibilities include but are not limited to meeting with prospective and current clients to discuss, diagnose, recommend and sell tree maintenance work. Phil also schedules, manages, and coordinates all aspects of the work he sells, including customer service issues. Phil’s passion for trees and his dedication to Acorn and our industry is evident in his work.


Lauren Olsen Owner / Production Manager-Safety Coordinator

ISA Certified Arborist WE-8374A

ISA Certified Tree Worker Climber Specialist WE-8374T

TRAQ Qualified (Tree Risk Assessment Qualified)

TCIA CTSP (Certified Tree Care Safety Professional) 00526

Lauren has over 20 years of experience in the Sacramento regions tree care industry. During his career Lauren has worked in all positions of field operations from ground worker, climber, foreman, stump grinder operator to operations-safety manager. Along the way, he has also competed in several ISA Western Chapter Tree Climbing Competitions. As Acorn’s Production Manager-Safety Coordinator Lauren is responsible for overseeing all tree maintenance operations to include, tree maintenance employee safety training and compliance, tree maintenance employee work skills training and performance, tree equipment maintenance and repair, and tree production work quality control. Lauren possess the positive leadership and communication skills required to manage, grow, and bring out the best in a diverse group of tree workers.


Dean Hernandez Owner / Arborist

ISA Certified Arborist WE-10173A

TRAQ (Tree Risk Assessment Qualified)

Dean is a proud United States Marine Corps veteran and has 16 years of experience in the Sacramento tree care industry. Dean has completed the Red Cross CPR and Emergency First Aid Instructor Course and provides Cal OSHA mandated first aid and CPR training to all of Acorn Arboricultural Services field employees. As with Jay, Phil, and Lauren, Dean began his career at the bottom and has worked his way up from ground worker to climber, to crew foreman. Dean currently serves as one of three sales representatives in the company and his responsibilities include but are not limited to meeting with prospective and current clients to discuss, diagnose, recommend and sell tree maintenance work. Dean also schedules, manages, and coordinates all aspects of the work he sells, including customer service issues. Dean exhibits the positive, can do attitude of many United States military veterans.


Edwin Stirtz Consulting Arborist

ISA Certified Arborist WE-0510A

TRAQ (Tree Risk Assessment Qualified)

Member ASCA (American Society of Consulting Arborists)

Ed possess more than 34 years in the tree care industry. Ed started in the green industry working for the National Parks Service as a seasonal park ranger. He then worked as a park maintenance worker for the parks departments in the bay area cities of Los Gatos, Campbell, and Saratoga. It was there where he began his career with trees receiving training in tree climbing, tree pruning and removal, as well as, tree pest and disease diagnosis and treatment. In the late 1980s Ed and his family moved from the bay area to the Sacramento area where he went to work for Austin B. Carroll and Son Tree Service. It was with Austin B. Carroll and Son that Ed earned his consulting wings, subsequently, he has been the consultant and project arborist on many high profile commercial and residential development projects and tree related issues throughout the Sacramento region over the last 30 years. Ed also has extensive experience in Tree Value Appraisal, Tree Risk Assessment, and acting as an expert witness in tree litigation issues.


Wayne McKee Consulting Arborist

BS Forestry, Humboldt State University

ISA Certified Arborist WE-0959A

TRAQ (Tree Risk Assessment Qualified)

Wayne grew up in Mendocino County and has more than 36 years’ experience in the horticulture, forestry, and arboricultural fields. Wayne has a diverse background having surveyed timber sales boundaries, set chokers in logging operations and worked as a member of a tree crew involved in various tree maintenance and preservation projects including naïve oak tree regeneration and tree protective fencing installation. He has held a State of California QAL (Qualified Applicators License) and worked as a Plant Health Care Applicator where he gained experience diagnosing, identifying and treating for tree related pests and diseases. Wayne also has a varied background working as a consulting arborist compiling tree value assessments, tree inventories, tree risk assessments, performing and assessing root crown excavations, acting as a project arborist on many commercial and residential development projects. Wayne also provides service calls to Acorn customers to access tree related problems and provide proper arboricultural solutions. Wayne’s wisdom, educational background, and varied work experience makes him a go to resource and a valued member of the Acorn team.


Acorn Arboricultural Services Inc. provides the Roseville, Placer County and greater Sacramento area with the highest quality tree care services available.
Our staff includes; I.S.A. Certified Arborists and Certified Tree Workers.
Our talented team has over 80 years combined experience in the tree care industry.

Tree Service areas include but are not limited to the following cities:
Roseville CA
Rocklin CA
Citrus Heights CA
Antelope CA
Granite Bay CA
Sacramento CA
Orangevale CA
Fair Oaks CA
Mcclellan CA
North Highlands CA
Loomis CA
Carmichael CA
Folsom CA
Elverta CA
Penryn CA
Rio Linda CA
Rancho Cordova CA
Lincoln CA
Represa CA
Newcastle CA
El Dorado Hills CA
Mather CA
Pleasant Grove CA
Auburn CA
Nicolaus CA
West Sacramento CA
Elk Grove CA