Our TCIA Team

Departments:  Accreditation | Corporate Sales | Development | Information Technology | TCI Magazine | Marketing | Meetings | Membership | Operations | Safety | Workforce Development

Mark Garvin / President

With a deep knowledge of TCIA and the tree care industry, Mark serves the membership and the public by furthering the mission of the association, executing the association’s strategic initiatives and working to deliver increasing member value. Reporting to the Board of Directors, he is responsible for the overall operations of TCIA. Mark has served TCIA and its members since 1996. / Email Me


Bob Rouse / Chief Program Officer 

Bob has over 30 years experience in the green industry, including many years as a practicing arborist.  As the chief program officer, Bob provides direction for TCIA Accreditation programs, the TCIAF loss control program, and TCIA credentialing programs, including EHAP and Tree Care Academy. Bob is the secretary for the ANSI A300 tree care standards. He also provides leadership for TCIA's membership and marketing activities. Bob has served TCIA and its members since 1997. / Email Me

Charlie Tentas / Account Rep Sales

Charlie is the account representative for TCIA’s Accreditation and CTSP programs. Charlie can help you enroll in, and manage the process of, Accreditation and Certification.  He is responsible for the Resellers Program, which offers TCIA training books and DVD’s to arborist and tree care supply vendors worldwide. / Email Me

Walter Jackson / Credentialing Specialist

Walter coordinates day-to-day aspects of the Accreditation programs and the TCIAF Loss Control program.  Walter has over 30 years experience in the field of safety and has a Certification in Industrial Hygiene (C.I.H).  His expertise includes analyzing loss and providing solutions for the tree care industry and for your company. / Email Me

Corporate Sales

Sachin Mohan / Vice President of Corporate Relations and Marketing (TCI Magazine & TCI EXPO)

Sachin is the point person for TCIA’s associate members and is staff liaison on the Associate Member Committee.  He facilitates the relationship between tree care companies and our industry’s manufacturers, vendors and suppliers of products and services through channels such as TCI EXPO and TCI Magazine. Sachin has served TCIA and its members since 1996.
If you’re interested in advertising in Tree Care Industry Magazine, TreeWorker newsletter, or the TCIA website, or would like to exhibit at TCI EXPO, contact Sachin.  / Email Me


Amy Tetreault / Director of Development and Special Programs

As the director of development and special programs, Amy is responsible for leading the association’s development efforts and cultivating and strengthening relationships with current and potential donors. She works to coordinate awareness for TCIA’s Partners Advancing Commercial Tree Care (PACT) program, Voice for Trees Political Action Committee, Arborist Safety Training Institute, and TCIA Foundation programs. Amy also works with the entire TCIA team to manage large, long-term projects that aim to further the tree care industry.  / Email Me

Information Technology

Ariel Crotty / Database Admin 

As database administrator, Ariel maintains the TCIA member database. She works to maintain the accuracy of accounts, ensuring that they receive the most relevant updates and information available as well as to provide all benefits for which they are eligible. / Email Me

Bruce White / IT Director

Bruce is responsible for TCIA’s information technology infrastructure which includes internal systems and support of tcia.org, tciaf.org and treecaretips.org. Bruce’s unflagging attention to current security practices ensures that all TCIA policies and procedures meet the highest standards and member account information remains safe. / Email Me

TCI Magazine

Don Staruk / Editor

Don is editor of Tree Care Industry Magazine, the most widely read publication in the tree care industry, and The Reporter, TCIA's most popular members-only publication. Don is always looking for story ideas, photos and feedback. Send him an email or post your photos. You may just be in the next TCI Magazine! / Email Me

Sue Blanchette / Associate Member Services Coordinator

Sue wears a lot of hats in her role as Associate Member coordinator. She is the ad traffic manager for Tree Care Industry Magazine as well as the Buyers Guide and Equipment Locator supplements, the TreeWorker and TCIA's website and electronic publications. She handles the Tree Care Industry JobBoard and all classified advertising for the magazine and the web. She responds to associate member inquiries and questions from advertisers. At times she is called on to pinch hit with layout and design in support of TCI publications and our advertisers.  / Email Me

Richard May / Graphic Artist

 Richard is responsible for the print and digital layout and production of Tree Care Industry Magazine and theReporter. As videographer, he creates educational and promotional content for TCIA and TCI EXPO. He also designs ads, products, logos and graphics for TCIA's web initiatives. / Email Me


Mike Rennie / Marketing Director

As marketing director, Mike works with his team to execute and manage all marketing-related communications and activities throughout the association. Mike has 15 years’ of management and marketing experience and has a diverse background that ranges from marketing international education programs to working as marketing director for a national construction trade association. / Email Me

Kathleen Costello / Senior Graphic Designer

As the in-house senior graphic designer, Kathleen designs and creates print and digital materials for TCIA. Committed to creating design materials that communicate effectively, her work can be seen throughout TCIA’s programs, events and outreach. Kathleen’s brochures, posters, web graphics, design of the member’s only publication The TreeWorker, and other creative materials work to advance the branding of TCIA to members, the tree care industry, and the public. She is also a photographer and has taken many of the images that you see on our website and in our promotional materials.  / Email Me

Robert Herdlein / Webmaster

As TCIA's Webmaster, Robert manages the look and feel, day-to-day maintenance and branding of TCIA's web content. With nearly 20 years of experience as a web coordinator, Robert has worked for organizations such as The Center for Children with Special Needs (CSHCN) and the Washington State Medical Home. Robert also previously served as an Associate Student Advisor at The Evergreen State College, where he assisted students in the production of their online student newspaper.

Jon Gerstenberger / Marketing Assistant

As the marketing assistant, Jon assists the marketing department with day-to-day marketing tasks affecting all TCIA departments and initiatives. In addition, Jon will be maintaining TCIA’s social media accounts, writing and editing various business communications, and acting as product liaison between Marketing and all other TCIA departments. Jon holds a Bachelor’s Degree in Marketing from Southern New Hampshire University.  / Email Me


Diane Morgan / Director of Meetings

Diane coordinates TCI EXPO, the world’s largest tree care industry trade show and conference, and Winter Management Conference, the premier business conference for the industry. Diane is responsible for selecting conference locations, handling speaker negotiations, working with hotels and convention centers, and ultimately implementing TCIA’s largest events. Diane manages a department of three and oversees the organization and planning of 100+ workshops and trainings within the tree care industry. / Email Me

Mai Chen / Meetings Coordinator

As meetings coordinator, Mai provides support for many of the meetings and events that appear on TCIA’s calendar, most notably TCI EXPO and Winter Management Conference. She also coordinates CTSP workshops throughout the country, the annual TCIA board of directors meeting and the spring and fall A300 committee meetings.  / Email Me


Jodie Wisherd / Meetings Coordinator

At TCIA, Jodie divides her time between the Meetings and Development departments. In Meetings, she is responsible for coordinating logistics for grant-funded workshops, including site selection, managing budgets, providing marketing materials for programs, working with speakers and arranging accommodations and transportation.
As a member of the Development team, Jodie is responsible for managing two Arborist Safety Training Institute (ASTI) grant cycles each year that fund safety-training workshops. She also provides support for the grant committee members and meetings, including compiling data, preparing reports and organizing meetings. / Email Me


Danae Jackson / Regional Outreach Coordinator - Florida & Georgia

Danae is the Regional Outreach Coordinator for Florida & Georgia.
As a Coordinator she facilitates increasing participation in TCIA programs via regional workshops that address both owner and employee needs, (EHAP, CTSP, Chipper Safety and other Tree Care Academy training programs, PHC Implementation, Business Boot Camp, etc).
Danae organizes member gatherings, attends regional meetings, conducts individual company outreach visits as well as strengthens the position and visibility of professional tree care with the public and in the green industry.
Danae is a Midwest transplant living in Florida with her husband and three boys. Married to Adam Jackson, a CTSP, Certified Arborist, Certified Tree-Worker/Climber Specialist, and the Florida ISA TCC Chair, and having a brother in the industry, she started volunteering for events and it created a passion for safety within the family and tree care industry. / Email Me

David Lee / National Outreach and Retention Manager, New England/New York Regional Outreach Coordinator

David works to build awareness of TCIA and convey the value of membership and programs. He regularly attends regional meetings and trade shows around the country, plus visits TCIA members and is responsible for membership recruitment and retention.  / Email Me

Dawn Thierbach / Regional Outreach Coordinator - Great Lakes

Dawn is the Regional Outreach Coordinator for Michigan, Indiana, Ohio and Kentucky.
As a Coordinator she will facilitate increased participation in TCIA programs via regional workshops that address both owner and employee needs, (EHAP, CTSP, Chipper Safety and other Tree Care Academy training programs, PHC Implementation, Business Boot Camp, etc).
Dawn organizes member gatherings, attends regional meetings, conducts individual company outreach visits as well as strengthens the position and visibility of professional tree care with the public and in the green industry.
She is based in central Michigan and brings 20 years of experience as co-owner; with her husband Jeff Thierbach, of Victorian Gardens Tree Service.
Her credentials include; ASCA (American Society of Consulting Arborists) Registered Consulting Arborist #579, CTSP, ISA Certified Arborist, ISA Certified Tree Risk Assessor, Member of the MTCC (Michigan Tree Climbing Championship) and Member of ISA chapter ASM (Arboriculture Society of Michigan). Dawn also has an Associate’s Degree in Applied Science/Ornamental Horticulture from Oakland Community College in Auburn Hills, Michigan.  / Email Me

Emily Duval / Senior Member Services Coordinator

As the member services coordinator, Emily's primary goal is to assist and build relationships with TCIA members, while also working with potential members interested in learning more about all of the association’s benefits. She assists with strategy implementation and maintains an open door-policy for members and potential members.  / Email Me

Lesa Scarbrough / Regional Outreach Coordinator - California

Lesa Scarbrough is the Regional Outreach Coordinator for California.
Lesa will organize TCIA member gatherings, attend regional meetings, conduct individual company outreach visits, seek out companies to join as new members, and look to strengthen the position and visibility of TCIA and professional tree care with the public and in the green industry in California.
Lesa is a lifelong California resident and has resided in Temecula with her husband, Scott, and two children for 15 years. Lesa brings 30 years of agricultural experience from the fruit and nut industries.
She has recently worked in the avocado industry; facilitating educational seminars and conferences on cultural and regulatory issues facing avocado growers in California  / Email Me

Margaret Hall Spencer / Regional Outreach Coordinator - Texas/Louisiana/Oklahoma

Margaret is the Regional Outreach Coordinator for Texas, Louisiana and Oklahoma. She is based in the Austin, Texas area.
As a Coordinator she will facilitate increased participation in TCIA programs via regional workshops that address both owner and employee needs, (EHAP, CTSP, Chipper Safety and other Tree Care Academy training programs, PHC Implementation, Business Boot Camp, etc.).
Organize member gatherings, attend regional meetings, conduct individual company outreach visits as well as strengthen the position and visibility of professional tree care with the public and in the green industry.
Margaret is an ISA Certified Arborist and Municipal Specialist and owns a business that provides arboricultural, horticultural and landscape consulting services. She is a board member of the Houston Area Urban Forestry Council and ISA Texas. Margaret is also the author of the children's book, My City Tree Cares for Me.  / Email Me

Peggy Drescher / Regional Outreach Coordinator - Midwest

Peggy is the Regional Outreach Coordinator for Illinois, Wisconsin, Minnesota, & Iowa.
As a Coordinator she facilitates increasing participation in TCIA programs via regional workshops that address both owner and employee needs, (EHAP, CTSP, Chipper Safety and other Tree Care Academy training programs, PHC Implementation, Business Boot Camp, etc).
Peggy organizes member gatherings, attends regional meetings, conducts individual company outreach visits as well as strengthens the position and visibility of professional tree care with the public and in the green industry.
Peggy is based in greater Chicago and brings 23 years of experience in the field of Urban Forestry and is an ISA Certified Arborist. She is also a board member of the SMA ( Society of Municipal Arborists) and a member of IAA ( Illinois Arborist Association). / Email Me

Tim Anderson / Regional Outreach Coordinator - Mid-Atlantic Region

Tim has over 30 years experience in the green industry. Tim graduated from S.U.N.Y. Cortland with a degree in English Literature, minoring in Journalism. After graduating, he attended the Arboriculture program at UConn’s Bartlett Arboretum.
Tim was a licensed arborist and groundskeeper in Connecticut before being hired by Scotts Miracle-Grow Ortho as a technical rep. to service the Mid-Atlantic region. Tim later worked as a sales rep., manager or consultant for companies like Lofts Seed, UHS, Finch Services, Beachley-Hardy, SEEDCO, Landscapes Unlimited Golf and SynaTech. Tim is a CTSP.
Recently, Tim owned and managed Executive Branches Landscaping. He lives in Towson, MD with his wife Donna, an ISA certified arborist and the grounds manager at University of Maryland, Baltimore County.  / Email Me

Tom Dunn / Director of Membership

Tom is based out of the Londonderry, NH Home office of TCIA, serving as the Director of Membership. Areas of responsibility include increasing awareness of TCIA programs and services, helping in the development of new programs and services to meet member needs and membership recruitment and retention. Tom also oversees the Regional Outreach Coordinator Program and represents TCIA in its relationships with numerous external constituencies.
Tom earned his B.A. in Political Science from the University of New Hampshire, with a background in insurance/risk management and occupational health and safety programming. Tom has worked in member relations roles for a non-profit municipal association and is a lifelong resident of New Hampshire.   / Email Me


Susan Boutin / Office Manager

As the office manager, Susan coordinates administrative support to management, staff, membership service and consumer calls. Susan is also responsible for much of what happens behind the scenes, including purchasing, inventory, order fulfillment and arranging for gathering and shipment of materials. Susan is an integral part of TCI EXPO and its registration process as well. / Email Me

Jan Borelli / A/R Accounting Assistant

Jan handles all of TCIA’s invoicing and statements, including monthly invoicing of Tree Care Industry Magazine and membership dues. She is responsible for all phases of accounts receivable, as well as some account reconciliations. / Email Me

Lauralee Powers / Accounting Assistant

As accounting assistant, Lauralee is responsible for accounts payable, month-end account reconciliations and all recordkeeping for fundraising and events for TCIA.  / Email Me

Sandy DeMello / Administrative Assistant

Sandy works with various members of the management team to enhance the flow of each department. Her duties include but not be limited to: assembling membership kits, checking and stuffing badges for our tradeshow, copying, filing, grading tests for our certification programs, various survey tabulations, data entry, processing thank you letters and correspondence.  / Email Me

Sheryl Wells / Administrative Assistant

Responsible for providing administrative support and answering phone inquiries from members and the public, Sheryl is on TCIA’s front line. She oversees product management, shipment and inventory, while also taking orders and event registrations over the phone. / Email Me

Kim Jacobs / Administrative Assistant

Kim Jacobs joined TCIA in September where she is take on the role of administrative assistant in the Operations Department. She will be answering phones, taking product orders, shipping orders and taking event registrations. In addition, she will be answering general questions and getting you in touch with the TCIA staff member who can help you with any specific questions.Email Me


Irina Kochurov / Credentialing Administrator 

As the administrator of the Certified Treecare Safety Professional program, Irina assists with database updates, meeting rosters, tests, exercises, and communications with prospective CTSPs and other program details.  / Email Me

Peter Gerstenberger / Sr. Advisor for Safety, Standards & Compliance

With over 30 years experience as a practicing arborist and the senior advisor for safety, standards and compliance at TCIA, Peter manages the department responsible for developing TCIA's safety and technical programs and heads up TCIA's regulatory affairs initiatives. He is also responsible for the Certified Treecare Safety Professional program and acts as staff liaison to TCIA's Safety and Education Committee and TCIA’s Alternate Representative to the ANSI Z133 Committee. Peter writes columns and articles for TCIA publications and speaks at arborist meetings around the country on safety and regulatory issues. Peter has served TCIA and its members since 1985.  / Email Me

Tchukki Andersen / Staff Arborist

A Board Certified Master Arborist and Certified Tree Safety Professional, Tchukki has worked in the field of arboriculture for more than 20 years. She writes technical articles for the TreeWorker, Tree Care Industry Magazine, and compiles best management practices for industry publications. Speaking to homeowners through TreeCareTips.org and the Tchukki Channel video series, she is our resident “tree surgeon general.”  Got a question about trees or how to care for them?  Ask Tchukki at “Ask an Arborist.”  / Email Me

Workforce Development

Brigitte Orrick / Workforce Development Director

As the Director of Workforce Development, Brigitte manages TCIA’s Green Industry Workforce Development initiative, which mobilizes a grassroots network of employers to provide the resources necessary to attract students to green industry careers.
Specifically, the network assists targeted technical training centers, two-year college and four-year university programs through financial contributions to the schools, hands-on training for the students, and guidance for the faculty and career counselors. The network also helps establish new programs in major tree care markets, so students can have the option of earning degrees and/or training certificates in their green industry discipline of choice.
Brigitte was previously the Dean of Trade, Industry and Apprenticeship at Nicolet College in Rhinelander, Wisconsin. She also received the Patriot Award for assisting a member of the Wisconsin National Guard in finding employment.  / Email Me

June Hibbs / Workforce Grassroots Outreach Coordinator

June joined TCIA in August as a part-time outreach coordinator for our new Green Industry Workforce Development initiative. June will be working with Brigitte Orrick, Workforce Development Director. She will provide support to employers and college Arboriculture and Urban Forestry programs by coordinating regional student recruiting efforts with TCIA member-company owners.
June will also support member-company owner participation in new program and apprentice development at community and technical colleges throughout the U.S.  
June comes from a background of more than 20 years as the manager of member services for a luxury travel club. / Email Me