The DeepRoot Experience: Meet the Experts

At DeepRoot, our experience, knowledge, and in-depth approach to every project is what truly sets us apart. We know every project is different, and we encourage a collaborative approach to help optimize projects for the maximum cost efficiency, tree health, and stormwater management needs. Why should you rely upon us to help maximize your project vision? In a word, expertise. We created the original commercial tree root barrier, and we revolutionized green infrastructure with the launch of the Silva Cell integrated tree and stormwater system in 2007. But like any great company, it is the people that make the difference. When you specify DeepRoot’s Silva Cell or any of our other products with it you get the expertise of a dedicated, skilled team with the knowledge of doing it right the first time to create ease, efficiency, and lasting results. Here’s an introduction to some of the team that helps deliver the best in green infrastructure.


Al Key – Al has successfully led the delivery of more than 400 projects, including high profile Silva Cell projects like the Martin Luther King Memorial in Washington D.C., and the Metropolitan Museum of Art in N.Y. He’s been responsible for award-winning stormwater projects in Normal, IL, and streetscapes throughout southern Florida. His deep passion for healthy trees has led to publications in Arboriculture & Urban Forestry and Civil Engineering News. Email: [email protected]

Brenda Guglielmina – Brenda has been an integral part of the DeepRoot team for more than 25 years. Among her many projects and urban forestry achievements, she has led the successful efforts to have the Silva Cell recognized as the equivalent to bioretention with the Washington Department of Ecology. She most recently gained approval from North Carolina’s Department of Environmental Quality for the Silva Cell to be recognized as a credited nutrient removing Stormwater Control Measure. Email: [email protected]

Pat Greeley – As Director of Technical Services, Pat manages our technical team, overseeing the development of details, specifications, contractor training, and research projects. With 20 years of construction industry experience managing complicated public works projects, Pat understands the challenges that contractors, engineers, and designers face during a project. During his 10 years at DeepRoot, he has trained contractors around the world on installation specifics for the Silva Cell and overseen thousands of projects. Email: [email protected]

Pavitra Rammohan – Pavitra is a California licensed PE, with an MS in Civil Engineering and nearly 10 years of professional stormwater expertise. As a water quality and BMP implementations specialist Pavitra serves on the LA County Metropolitan Transportation Authority Sustainability Council, promoting sustainability-related best practices and advising in the development of the LA Metro sustainability goals, targets and performance metrics. A regular presenter at the California Stormwater Quality Association Pavitra brings deep experience combined with rigorous training to her Southern California clients. Email: [email protected]

Rachel Roberts – As a former landscape architect with both an MLA and MBA in sustainable management, Rachel is uniquely qualified to work on urban tree and stormwater projects with Silva Cell. Rachel has led such high-profile projects as the Courthouse Square Reunification in Santa Rosa, California, and Amazon’s Headquarters in Seattle, Washington. During her tenure, Rachel has been instrumental in managing C3 qualifying stormwater projects in Northern California and has managed more than 200 projects to completion. Email: [email protected]

Shawn Freedberg – In his role as DeepRoot’s Director of Business Development, Shawn works closely with our clients, as well as our sales and technical teams to ensure a successful project. With an MLA from the Rhode Island School of Design (RISD) and several years’ experience as a practicing landscape architect, Shawn is uniquely skilled in understanding the needs of clients and how to apply them to Silva Cell projects. As a jury member of the Landscape Architect Foundation Olmsted Scholars Program, Shawn works to bring the next generation of talented landscape architects to the profession. Email: [email protected]


Michael James – As General Manager of DeepRoot Canada, Mike has 25+ years of experience in green infrastructure. An expert in street trees, stormwater management, low impact development (LID), and sustainable design, Mike has worked with municipalities and private clients across Canada, helping develop soil volume standards and hundreds of Silva Cells projects. Michael lectures regularly on the integration of soil, trees, and stormwater as a complete LID solution. Signature Silva Cell projects Mike has led include award-winning projects at the Olympic Village in Vancouver, Sugar Beach in Toronto and the Armature in Edmonton. Email: [email protected]

Mark Adamaley – as a licensed PE, Mark delivers tremendous civil engineering, stormwater, and project management experience to his Ontario and eastern Canada clients.  While Mark’s time at DeepRoot has just passed a year, his skill and expertise have proven invaluable in such complex projects as the Canadian Museum of Science and Technology and Lakeshore Road in Oakville, Toronto. Mark’s stormwater and project experience have made him an invaluable member of the team in a short time. Email: [email protected]

United Kingdom

Steve Chatwin-Grindey – As the United Kingdom and E.U. Commercial Director of DeepRoot Urban Solutions, Steve has led the charge for sustainable development and SuDS for over 15 years. Having managed high profile projects ranging from Wembley Way and the Bomber Command in London to projects across the UK and Europe Steve has tremendous experience in Silva Cell applications integrating trees and stormwater for long term success. Steve is a member and presenter of The Trees Design Action Group (TDAG), a leading advocacy organization in the UK. Email: [email protected]

Dr. Chris Newton – With an engineering Ph.D. in floodwater management, Chris has deep experience in stormwater management including SuDS, modeling, and sustainable drainage design. Chris has led efforts integrating stormwater management with the Silva Cell including our new Stormwater Sizing & Design Tooland has presented at numerous industry conferences. Email: [email protected]

These are just just some of the talented people that make up our team. When you specify and install DeepRoot Silva Cells you can be confident your project is in experienced hands with a passion for producing outstanding results and creating long lasting green infrastructure. Let us know how we can be a part of your next project!

[email protected]

USA | 415-781-9700

Canada | 604-687-0899

United Kingdom (+44) 020-3848-4230

Photo credit: Deb Snelson / Getty Images – 80,000 year old aspen in Utah. 106 acres of 47,000 trees . One of the words oldest living organsism. 


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