Arborist Expert Witnesses

Doral, Florida

Arborist, Environmental - Arborist, Tree Risk Assessment, Tree value, Hazard assessment, Arboricultural consulting, Tree preservation, Tree health assessment, Expert witness testimony, Boundary tree disputes, Tree appraisal and valuation, Construction impact assessments, Municipal tree ordinance compliance, Court testimony

Augusto C. Carvajal Vélez is a highly experienced arboricultural expert specializing in tree risk assessment and tree failure analysis. With over 20 years in the field, he provides precise and scientifically grounded evaluations for cases involving tree hazards, liability assessments, and failure investigations. An ISA-certified arborist and Tree Risk Assessment (TRAQ qualified) professional, Augusto has supported various high-profile cases by offering expert testimony on issues of tree failure, Risk Assessment, and urban forestry impacts. Augusto’s expertise in tree biology and arboriculture makes him a trusted authority for cases requiring specialized knowledge in tree risk and failure analysis in the subtropical areas of South Florida and Puerto Rico.

Palm Harbor, Florida

Arborist - Tree Risk, Tree Valuation, Tree Appraisal, Nursery Valuation Appraisals, Tree Preservation, Expert Witness, Pesticides, Eminent Domain Takings, Tree Farm Appraisals, Commercial Landscapes, Tree Failure

Joe Samnik, respected industry leader in the fields of arboriculture and horticulture, brings 59 years of experience to his role as an expert witness in arboriculture and landscape litigation. An ISA Certified Arborist with Tree Risk Assessment Qualification (TRAQ), Joe also has a license from the State of Florida Office of Entomology. He has provided expert testimony in over 1,000 cases, maintaining an equal balance between plaintiff and defendant representation. His unique contributions to the field include authoring Florida's statutory formula for appraising highway vegetation and creating the mathematical table of value for the Florida State citrus tree removal class action lawsuit. Joe has presented his research at five international arboricultural conferences and served as president of the Association of Eminent Domain Professionals, a distinguished organization of attorneys, CPAs, and appraisal experts. In addition to being the Founding President of the Florida Chapter of t...

Watkinsville, Georgia

Arborist, Biomechanics - Tree failure, severe weather, wind damage, forestry

25 years as university faculty; 4 expert witness experiences; > 70 published scientific journal papers; expertise in tree biomechanics, wind and tree interactions, and tree/forest damage from wind.

Woodbury, New Jersey

Arborist, Failure Analysis - Personal injury matters, Tree damage, Arboriculture, Tree failure investigations, Aerial inspections & documentation, Tree risk assessment, Tree disputes, Tree safety and biomechanics, Tree service duties & standards, Tree valuations, Insurance subrogation, Liability reports, Tree worker injuries

Mr. Miller boasts over three decades of extensive experience in arboriculture, accumulating more than 30,000 hours of hands-on field expertise, specifically with mature trees on private, commercial, and government properties. Moreover, he is an effective communicator, respected by his peers. Mr. Miller has completed dozens of certificate programs, and he is a Registered Consulting Arborist, Board-Certified Master Arborist, Certified TreeCare Safety Professional, and Licensed Tree Expert. Mr. Miller offers expertise on a broad spectrum of tree-related issues and the tree care industry. His proficiency is highly valued by attorneys, insurance professionals, tree care industry management, and property managers. For more than a decade, Mr. Miller has established himself as a valuable asset for both plaintiff and defense counsels in numerous matters concerning tree safety, health, value, and the tree care industry. Mr. Miller's CV, fee schedule, and references are available upon request.

Forest Grove, Oregon

Arborist, Arborist - Certified Arborist, Forester, Consulting Arborist, Tree Forensics, Tree & Landscape Appraisals, Tree Damage, Trees, Timber Trespass, Tree Risk Assessments, Forest Damages, Forest, Tree Health Assessments, Wildland Fire Damage Assessments

American Society of Consulting Arborists (ASCA) Registered Consulting Arborist (RCA) # 408, International Society of Arboriculture (ISA) Certified Arborist # PN 1068 A, ISA Tree Risk Assessor Qualified Pacific Northwest Chapter ISA Certified Tree Risk Assessor # 0150, Timber and Timberland Appraisal Course, USFS trained in forest fire fighting, root disease and animal damage identification, hazard tree workshop certified since 1978. Wildland fire 25 seasons experience in leadership roles, assessments of tree hazards and tree viability on fires and after fires. Over 40 years of field experiences. Servicing the western United States.

Willow Street, Pennsylvania

Arborist, Failure Analysis - Tree failure, Tree forensics, Tree health, Tree risk assessment, Consulting arborist, Plant appraisal and valuation, Tree biomechanics, Tree care, Plant Damage, Property damage, Damage

Over 30 years of Green Industry expertise in all phases of tree care, including 18 years consulting with clients to diagnose tree health and safety concerns. Specializing in discovering causation, appraisal valuations, and expert witness services. American Society of Consulting Arborists (ASCA) Registered Consulting Arborist (RCA) #447. International Society of Arboriculture (ISA) Board Certified Master Arborist (BCMA) #PD-0358B. Longwood Gardens Certificate of Merit in Ornamental Plants - Series I & II

Pennsylvania

Arborist, Failure Analysis - Personal injury matters, Tree damage, Arboriculture, Tree failure investigations, Aerial inspections & documentation, Tree risk assessment, Tree disputes, Tree safety and biomechanics, Tree service duties & standards, Tree valuations, Insurance subrogation, Liability reports, Tree worker injuries

Mr. Miller boasts over three decades of extensive experience in arboriculture, accumulating more than 30,000 hours of hands-on field expertise, specifically with mature trees on private, commercial, and government properties. Moreover, he is an effective communicator, respected by his peers. Mr. Miller has completed dozens of certificate programs, and he is a Registered Consulting Arborist, Board-Certified Master Arborist, Certified TreeCare Safety Professional, and Licensed Tree Expert. Mr. Miller offers expertise on a broad spectrum of tree-related issues and the tree care industry. His proficiency is highly valued by attorneys, insurance professionals, tree care industry management, and property managers. For more than a decade, Mr. Miller has established himself as a valuable asset for both plaintiff and defense counsels in numerous matters concerning tree safety, health, value, and the tree care industry. Mr. Miller's CV, fee schedule, and references are available upon request.

Puerto Rico

Arborist, Environmental - Arborist, Tree Risk Assessment, Tree value, Hazard assessment, Arboricultural consulting, Tree preservation, Tree health assessment, Expert witness testimony, Boundary tree disputes, Tree appraisal and valuation, Construction impact assessments, Municipal tree ordinance compliance, Court testimony

Augusto C. Carvajal Vélez is a highly experienced arboricultural expert specializing in tree risk assessment and tree failure analysis. With over 20 years in the field, he provides precise and scientifically grounded evaluations for cases involving tree hazards, liability assessments, and failure investigations. An ISA-certified arborist and Tree Risk Assessment (TRAQ qualified) professional, Augusto has supported various high-profile cases by offering expert testimony on issues of tree failure, Risk Assessment, and urban forestry impacts. Augusto’s expertise in tree biology and arboriculture makes him a trusted authority for cases requiring specialized knowledge in tree risk and failure analysis in the subtropical areas of South Florida and Puerto Rico.

Port Angeles, Washington

Arborist, Environmental - arborist, tree risk, tree appraisal, tree valuation, tree forensics, urban forestry, trees and construction, tree protection, tree safety, tree policy, urban forestry policy

John Bornsworth is the owner and Principal of Peninsula Environmental Group, Inc., with 20 years of tree-related and natural resources experience. John specializes in urban & community forestry planning and policy; tree forensics, pathology, risk management, and providing expert witness testimony.  As of January 2021: there are 14 ASCA Registered Consulting Arborists (RCA) and 30 ISA Board Certified Master Arborists (BCMA) in Washington out of 417 ISA Certified Arborists. Only 7 individuals hold both the RCA and BCMA credentials together. Roughly 300 professionals hold both credentials nationwide.  Attended and passed first Tree & Plant Appraisal Qualification training by ASCA. Less than 200 hold this credential nationwide, as of December 2023.  Routinely provide expert opinion and testimony on arboricultural, horticulture and vegetation management to areas of legal practice that include land use, real estate, trespass, and negligence.  Retained as expert witness on 63 ...