Horticulture Consultants: 3

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John Bornsworth is the owner and Principal of Peninsula Environmental. With over 20 years of experience in urban and community forestry management, John is a Board-Certified Master Arborist and a Registered Consulting Arborist. He holds additional qualifications in Municipal Arboriculture, Tree and Plant Appraisal, and Tree Risk Assessment. John is also a TCIA Certified Treecare Safety Professional. John’s expertise spans urban and community forestry planning and policy, tree forensics, pathology, risk management, and he frequently provides expert witness testimony. John also serves as a chairperson of the Washington State’s Urban & Community Forestry Council, where he represents commercial arboriculture.

Since founding Peninsula Environmental in 2014, John Bornsworth has authored or reviewed hundreds of natural resource management plans, public policies, codes, and various environmental reports concerning trees, critical areas, wetlands, and shorelines. He is trained in critical area and shoreline restoration, familiar with the USACE 1987 Wetland Delineation Manual, the Western WA 2014 Wetland Rating System, ordinary high watermark delineation and advanced mitigation among other areas. John offers technical assistance in evaluating, mitigating, and restoring shorelines and critical areas, alongside related stormwater management tasks.

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John A. Harris, is Principal of Landscape Economics, LLC, President of Earth Advisors, Inc., and a LANDSCAPE ECONOMIST who has worked in the Arboriculture, Forestry, landscape, and horticultural fields for over 40 years. Mr. Harris has provided reputable consulting, education, and project management services for projects across the United States and internationally, in both temperate and tropical ecosystems.

Areas of Expertise include:

Landscape and Tree Risk Assessments
- Landscape, Tree, Urban Forest, Nursery Plant Value Appraisals
- Landscape, Tree, Urban Forest, Nursery Plant Damage Appraisals
- Damage Assessments, Claims, and Recovery Consulting
Arboriculture Industry Standards and Standard Practices
Landscape, Arboriculture, Forestry, Environmental Project Management
Utility Line Clearance Industry Standards and Standard Practices, Electrocution
Landscape Industry Standards and Standard Practices- Design, installation, maintenance
Personal Injury and Wrongful Death involving tree or landscape issues
Municipal Tree Inventory and Management Plans
Duty of Care and Negligence in Tree and Landscape Maintenance
Forestry and Forest Resources Management
Grounds Maintenance Practices
Arboriculture and Arborist Practices

• View John A. Harris' Curriculum Vitae

8/2/2012 · Plants & Trees

Tree Removal Liability Sharing

By: John Harris

The number of storms in recent years increases the need for better tree and landscape decisions for property owners. Research regarding landscape damages for different storm intensities, what plants get knocked down by winds more often, and priorities for landscape restoration have been intensified by many southern state universities' forestry and horticultural departments.

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5/8/2012 · Appraisal & Valuation

Tree and Landscape Values are Still Divergent in Practice

By: John Harris

Trees and landscapes have been valued since humans were given gardens for food and enjoyment. Once people determined how to harvest seeds, how to plant gardens and landscapes, and how to relocate trees and plants, then decisions about what to use and what not to use began to set values for plants. It is this author's opinion that these practices logically date back to the beginning of history.

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3/7/2012 · Plants & Trees

Tree and Landscape Appraisal: Jurisdiction Determines the Appraisal or Valuation Method

By: John Harris

The value of a tree can only be determined if we agree. Any value given, whether by a layperson or a professional, is real when another person involved in the process agrees to that value. The value used in the final decision can also be a different value from the one determined by the experts who worked on it (especially when the experts worked on different sides of a valuation case).

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Arborgate Consulting, Inc. is an Arboriculture and Horticulture Consultancy working with insurance companies, major developers, theme parks, homeowners, homeowners' associations, landscape architects, landscape contractors, property managers, attorneys and governmental bodies.

Gregory Applegate, ASCA, ASLA, is an independent consulting Arborist, and CEO of Arborgate Consulting, Inc. He has been in the horticulture industry since 1963, providing professional arboricultural consulting since 1984 within both private and public sectors.

Client List - Disneyland, Disneyland Hotel, DisneySeas-Tokyo, Disney’s Wild Animal Kingdom, the New Tomorrowland, Disney’s California Adventure, Disney Hong Kong project, Universal Studios, Knott’s Berry Farm, J. Paul Getty Museum, Dreamworks, Newport Coast, Crystal Court, Newport Fashion Island Palms, Bixby Ranch Country Club, Playa Vista, MTA Purple and Expo Lines, MWD-California Lakes, Loyola-Marymount campus, Cal Tech, Cal State Long Beach, Pierce College, UCI, USC, UCLA, and the State of California review of the Landscape Architecture License exam.

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