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Mathers Environmental Science Services, LLC
Columbus, Ohio
, 43230

Contact:  Dr. Hannah M. Mathers
www.mathersenvironmental.com
614-371-0886 Or Toll Free
mathers326@gmail.com

Columbus, Ohio 43230
Contact:  Dr. Hannah M. Mathers
www.mathersenvironmental.com
614-371-0886
mathers326@gmail.com
Dr. Hannah Mathers has over 26 years of experience and training in weed control in landscape, nursery crops and Christmas trees, and is accomplished in herbicide chemistry, agricultural statistics, plant nutrition, woody plant physiology and stress physiology. Dr. Mathers is employed as a Contract Researcher and Independent Consultant, Mathers Environmental Science Services, LLC. In addition to her graduate degrees in Horticulture, she holds an undergraduate degree in Pomology/ Plant Science and two diplomas, one in Forestry and another in Agriculture. For the past 20 years, Dr. Mathers’ has distinguished herself in weed control in horticultural crops and environmental sustainability. She has conducted thousands of herbicide efficacy and phytotoxicity trials, invented five new bio-herbicides, assisted in the registration of eight new herbicides in the US for ornamentals and is a notable national and international speaker and writer.
Information:  
Agricultural Pesticides and Herbicides ,  Agriculture,  Cannabis,  Horticulture,  Landscaping,  Vineyards, 

Dr. Hannah Mathers has over 26 years of experience and training in weed control in landscape, nursery crops and Christmas trees, and is accomplished in herbicide chemistry, agricultural statistics, plant nutrition, woody plant physiology and stress physiology. Dr. Mathers is employed as a Contract Researcher and Independent Consultant, Mathers Environmental Science Services, LLC. In addition to her graduate degrees in Horticulture, she holds an undergraduate degree in Pomology/ Plant Science and two diplomas, one in Forestry and another in Agriculture. For the past 20 years, Dr. Mathers’ has distinguished herself in weed control in horticultural crops and environmental sustainability. She has conducted thousands of herbicide efficacy and phytotoxicity trials, invented five new bio-herbicides, assisted in the registration of eight new herbicides in the US for ornamentals and is a notable national and international speaker and writer.

Arborgate Consulting, Inc.
Tustin, California
1131 Lucinda Way, 92780

Contact:  Gregory W. Applegate
http://www.arborgate-consulting.com/
714-731-6240 Or Toll Free
greg@arborgate.occoxmail.com
1131 Lucinda Way
Tustin, California 92780
Contact:  Gregory W. Applegate
http://www.arborgate-consulting.com/
714-731-6240
greg@arborgate.occoxmail.com
Mr. Applegate is an independent registered consulting arborist, certified arborist, ASCA tree & plant appraisal qualified, 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. His expertise includes forensic consulting and testimony, appraisal, tree preservation, diagnosis of tree and palm health problems, construction impact mitigation, hazard and failure analysis, root damage studies, decay and loss of strength analysis, pruning programs, species selection, and tree health monitoring.
Information:  
Accident Investigations,  Arboriculture,  Arborist,  Failure Analysis,  Horticulture,  Landscaping,  Risk Assessment, 

Mr. Applegate is an independent registered consulting arborist, certified arborist, ASCA tree & plant appraisal qualified, 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. His expertise includes forensic consulting and testimony, appraisal, tree preservation, diagnosis of tree and palm health problems, construction impact mitigation, hazard and failure analysis, root damage studies, decay and loss of strength analysis, pruning programs, species selection, and tree health monitoring.

Mark Webber’s Arboricultural & Horticultural Consultancy LLC
Dayton, Ohio
8172 Hemple Rd, 45417

Contact:  Mark A. Webber BCMA, CPH, LTE, MArborA, OCMNT, RCA, TPAQ, TRAQ
www.expert-arborist.com
937-604-2291 Or Toll Free
mwebber@expert-arborist.com
8172 Hemple Rd
Dayton, Ohio 45417
Contact:  Mark A. Webber BCMA, CPH, LTE, MArborA, OCMNT, RCA, TPAQ, TRAQ
www.expert-arborist.com
937-604-2291
mwebber@expert-arborist.com

Mark Webber's CV


Mark A. Webber holds 19 different certifications, qualifications, accreditations, and licensures in the fields of arboriculture and horticulture. Most notably, Mr. Webber is a Register Consulting Arborist, Board Certified Master Arborist, and a Certified Professional Horticulturist with over 45 years of relevant professional experience.

Mr. Webber provides investigations, reports, and testimony in matters related to tree condition, maintenance, and removal. His expertise includes the management of nursery, arboricultural, agricultural and landscaping operations, pesticide use, appraisals of crop, tree and plant damage, and an assortment of horticultural issues. Mr. Webber is an admitted member of 32 industry organizations, including the American Society of Consulting Arborist, International Dendrology Society, and American Phytopathological Society, the OSHA (Occupational Safety and Health Administration) Small Business Advocacy Review Panel for Tree Care Industry Rules. Mr. Webber has been a court-qualified expert in his field in Ohio, New Jersey, Washington, and California.

Mr. Webber has been working at farms and nurseries since 1975. He remains active in his industry by serving on committees and boards and as the Founder/Co-owner of an arboricultural and horticultural firm. In this capacity, he provides a full range of landscape design, installation, and landscape management. His company provides tree evaluations and inventory, lawn care, weed and pest control, tree, and arboricultural services. Additional services include drainage improvements, soil, and leaf testing, management of trees during construction, installation of retaining walls, consulting, and other related areas. Mr. Webber has worked as a Research Assistant for the BASF Corporation involving fungicides, insecticides, and herbicides trials on a diverse assortment of economically import agricultural and horticultural crops. He also served as an Apiary (Honey Bee) Technician for The Ohio State University.

Mr. Webber earned an Associate in Applied Science and a Bachelor of Science degrees in Horticultural Science with a minor in Agricultural Economics both from The Ohio State University. He is designated as a Board-Certified Master Arborist by the International Society of Arboriculture and is a Tree Risk Assessment Qualified Arborist. Mr. Webber is a Master Nursery Technician by the Ohio Nursery & Landscape Association. He is designated as a MArborA by the United Kingdom’s Arboricultural Association. Mr. Webber is also a New Jersey Licensed Tree Expert (LTE #639) and is a Licensed Arborist in multiple states. The board of the American Society of Horticultural Science has designated Mr. Webber as a Certified Professional Horticulturist. The American Society of Consulting Arborist has credentialed Mr. Webber as Registered Consulting Arborist #7

Education and Certifications

• A.A.S., BS, Horticultural Science, Agricultural Economics, The Ohio State University, Columbus, OH

•2020 Graduate from ASCA(American Society of Consulting Arborist) Consulting Academy, Sacramento, California

•Tree and Plant Appraisal Qualification (TPAQ), American Society of Consulting Arborists

• Certified Professional Horticulturist #30086, American Society for Horticultural Science, Alexandria, Virginia

• Licensed Arborist

• Certified Tree Expert #639, Board of Tree Experts Jackson NJ, August 2016-August 2017

• Licensed Tree Expert #639, Board of Tree Experts Jackson NJ, August 2017-Present

•I.S.A. Board Certified Master Arborist OH-0824BUM, International Society of Arboriculture, (I.S.A. Certified Arborist)

• I.S.A. Certified Arborist Municipal Specialist, International Society of Arboriculture

•I.S.A. Certified Arborist Utility Specialist, International Society of Arboriculture

• Tree Risk Assessment Qualified (TRAQ), International Society of Arboriculture

•Ohio Commercial Pesticide Applicator 6A, 6C, 8

• Wildlife Protector Certification, Wildlife Training Institute

• Master Nursery Landscape Technician, Ohio Nursery & Landscape Association (ONLA), Columbus, OH

• MArborA, designated by the Arboricultural Association, United Kingdom

• Registered Consulting Arborist #706, American Society of Consulting Arborist

• Sky Warn Weather Spotter Training Certification, National Weather Service
Information:  
Accident Investigations,  Agricultural Pesticides and Herbicides ,  Arboriculture,  Arborist,  Horticulture, 

Mark Webber's CV


Mark A. Webber holds 19 different certifications, qualifications, accreditations, and licensures in the fields of arboriculture and horticulture. Most notably, Mr. Webber is a Register Consulting Arborist, Board Certified Master Arborist, and a Certified Professional Horticulturist with over 45 years of relevant professional experience.

Mr. Webber provides investigations, reports, and testimony in matters related to tree condition, maintenance, and removal. His expertise includes the management of nursery, arboricultural, agricultural and landscaping operations, pesticide use, appraisals of crop, tree and plant damage, and an assortment of horticultural issues. Mr. Webber is an admitted member of 32 industry organizations, including the American Society of Consulting Arborist, International Dendrology Society, and American Phytopathological Society, the OSHA (Occupational Safety and Health Administration) Small Business Advocacy Review Panel for Tree Care Industry Rules. Mr. Webber has been a court-qualified expert in his field in Ohio, New Jersey, Washington, and California.

Mr. Webber has been working at farms and nurseries since 1975. He remains active in his industry by serving on committees and boards and as the Founder/Co-owner of an arboricultural and horticultural firm. In this capacity, he provides a full range of landscape design, installation, and landscape management. His company provides tree evaluations and inventory, lawn care, weed and pest control, tree, and arboricultural services. Additional services include drainage improvements, soil, and leaf testing, management of trees during construction, installation of retaining walls, consulting, and other related areas. Mr. Webber has worked as a Research Assistant for the BASF Corporation involving fungicides, insecticides, and herbicides trials on a diverse assortment of economically import agricultural and horticultural crops. He also served as an Apiary (Honey Bee) Technician for The Ohio State University.

Mr. Webber earned an Associate in Applied Science and a Bachelor of Science degrees in Horticultural Science with a minor in Agricultural Economics both from The Ohio State University. He is designated as a Board-Certified Master Arborist by the International Society of Arboriculture and is a Tree Risk Assessment Qualified Arborist. Mr. Webber is a Master Nursery Technician by the Ohio Nursery & Landscape Association. He is designated as a MArborA by the United Kingdom’s Arboricultural Association. Mr. Webber is also a New Jersey Licensed Tree Expert (LTE #639) and is a Licensed Arborist in multiple states. The board of the American Society of Horticultural Science has designated Mr. Webber as a Certified Professional Horticulturist. The American Society of Consulting Arborist has credentialed Mr. Webber as Registered Consulting Arborist #7

Education and Certifications

• A.A.S., BS, Horticultural Science, Agricultural Economics, The Ohio State University, Columbus, OH

•2020 Graduate from ASCA(American Society of Consulting Arborist) Consulting Academy, Sacramento, California

•Tree and Plant Appraisal Qualification (TPAQ), American Society of Consulting Arborists

• Certified Professional Horticulturist #30086, American Society for Horticultural Science, Alexandria, Virginia

• Licensed Arborist

• Certified Tree Expert #639, Board of Tree Experts Jackson NJ, August 2016-August 2017

• Licensed Tree Expert #639, Board of Tree Experts Jackson NJ, August 2017-Present

•I.S.A. Board Certified Master Arborist OH-0824BUM, International Society of Arboriculture, (I.S.A. Certified Arborist)

• I.S.A. Certified Arborist Municipal Specialist, International Society of Arboriculture

•I.S.A. Certified Arborist Utility Specialist, International Society of Arboriculture

• Tree Risk Assessment Qualified (TRAQ), International Society of Arboriculture

•Ohio Commercial Pesticide Applicator 6A, 6C, 8

• Wildlife Protector Certification, Wildlife Training Institute

• Master Nursery Landscape Technician, Ohio Nursery & Landscape Association (ONLA), Columbus, OH

• MArborA, designated by the Arboricultural Association, United Kingdom

• Registered Consulting Arborist #706, American Society of Consulting Arborist

• Sky Warn Weather Spotter Training Certification, National Weather Service

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