Combining an academic background in horticulture and working in the roofing and landscape construction industry, Ms. Durhman has over 20 years of green (vegetated) roof professional experience. She has worked on all aspects of the green/vegetated roofing industry: construction contracting, collaborating with the research community, improving corporate sales and images, and PR and marketing. Since 2002, she has created approximately 60 acres of vegetated roofing across the country. While many square feet are classified as extensive, Ms. Durhman has been involved in numerous signature projects categorized as native, semi-intensive, urban rooftop farms, slopes, and bio-solar roofs. She is uniquely qualified to establish maintenance programs called Greenformation and restore vegetated roof problems within the public and private markets. Ms. Durhman holds a masters degree in Horticulture from Michigan State University, where she studied green roof plant performance and environmental sustainability.

Mr. Flack has earned his designations, among select thousands in the world, as a Certified Professional in Erosion & Sediment Controls (CPESC) as well as his designation as a Certified Erosion, Sediment and Storm Water Inspector (CESSWI), lending his experience and training to his customers to consult them in all their stormwater needs. He has also earned his status as a Qualified Compliance Inspector of Stormwater (QCIS) and as a Qualified Preparer of Storm Water Pollution Prevention Plans (QPSWPPP. He also earned the Certified Erosion and Sediment Control Lead (CESCL), which is a 17.5-hour certificate program as required by Washington State for all construction stormwater management. He is a subject matter expert and lead instructor for StormwaterONE, which has established itself as the leader in stormwater management training and credentialing, the school’s mission is to provide their students with the most comprehensive and up to date training of individual stormwater permits, online or in-person.

Brad has been invited to speak in-person on storm water and erosion control issues in many locations, including California, Texas, Tennessee, Louisiana, Wyoming, Oregon, Colorado, Ohio and New Mexico, as well as internationally in Antigua, Guatemala, and in San Jose, Costa Rica. Furthermore, he has provided virtual online training for wide variety organizations across the country, including the Army Corps of Engineers, Maryland Stadium Authority, and more.

Additionally, he served as president and administrative vice president for the South-Central Chapter of the International Erosion Control Association. Furthermore, he directed the IECA Region 1 Education Committee: Stormwater Management Track as co-chair, which encompasses North America, South America and Europe. Brad also sat as the Region 6 Chapter President for EnviroCert International (ECI) and was a member of the Policies and Procedures Committee for ECI. He has served as the Region 7 representative for the CPESC, Inc., group as well as the technical vice-chair for the Council. He has been an IECA Mentor and served as a TCEQ EnviroMentor.

Brad has been involved with Stormwater Quality Management since 2004 where he learned about permitting, turf establishment, erosion control and detention pond maintenance and has continued to be a student of the industry throughout his career. His attention to detail and depth of knowledge about structural control devices, vegetative stabilization and best management practices are a valuable asset to his clients and students.

His wife is his high school sweetheart, and they have been married for over 20 years and have three sons. Brad has also actively served at his church and has ventured on over a dozen mission trips, from drilling for water in rural villages in Honduras to assisting in hurricane recovery efforts in Puerto Rico. Brad was the Director of Hands and Feet Honduras/Puerto Rico, a 501(c)3 organization for over eight years.

Rob Gladfelter has 20+ years of experience in the landscape trade and has been working as a landscape architect for the past six years. Mr. Gladfelter has worked on all types of projects from municipal planning projects and large park master planning to small residential design and install. His time with Refugia, a mission-based design and install firm that uses best sustainable practices to design native gardens that inspire and improve local ecology has allowed him to explore and learn how to use low impact design and ecological services to manage stormwater. Mr. Gladfelter is also an adjunct professor for the Landscape Architecture program at Temple University and is the acting chairperson of his Borough’s Environmental Advisory Commission.

Senior Director, Local Paving, Pave Ahead
Mr. Justice is based in the Philadelphia area, and works with local, regional and state technical and promotion partners to help deliver concrete parking and street paving projects by supporting promotion, design and construction activities as well as provide training and presentations on concrete applications and promotion. Mr. Justice is also a pervious concrete and pervious pavements specialist, having been involved in over 300 pervious pavement projects and has spoken at hundreds of industry events, workshops and webinars. Prior to joining the NRMCA, Mr. Justice was the promotion director for the Portland Cement Association Northeast for over 10 years. Prior to that, Mr. Justice worked as a civil engineer with over 25 years of experience as an engineering project manager, concentrating on pavement projects for airports, parking lots and roads. 

Associate, BETA Group, Inc.
Mr. Paradis has over 30 years of professional experience in the civil engineering field. He has been responsible for many diverse site development, transportation, stormwater management, and utility projects for both public and private sectors. He has extensive experience in designing, analyzing, permitting, and inspection of stormwater management systems and has expert knowledge of the latest state and federal regulations, environmental requirements, and sustainable design. Mr. Paradis is adept at providing stormwater management LID techniques and BMP retrofits for site development, transportation, and environmental engineering, projects to meet various site constraints, conditions and water quality issues. His broad knowledge and experience offer a basis for providing thorough peer reviews of land development and stormwater projects submitted to various boards/commissions of our municipal clients. He provides this service as an on-call or project specific basis to Boards of Selectmen, Zoning Boards of Appeals, Planning Board, Conservation Commission and Boards of Health. Mr. Paradis also provides complete municipal separate storm sewer (MS4) compliance services to our Massachusetts clients. He developed a compliance evaluation program that includes matching the Town’s resources with the requirements of the Permit and developing a 10 year schedule and budget plan. Subsequently, he then works with the client to service their specific MS4 task compliance needs.

Rod Tyler President, Green Horizons Environmental, LLC
Mr. Tyler possesses over 30 years in the Compost Industry and has a diversified background in compost quality control, research, new market and product development and marketing. He has technical expertise in Agronomy, developing efficient composting systems, sustainability, storm water, pollution control and developing source markets for the products produced. As the inventor and former patent holder for the Filtrexx line of products, Mr. Tyler created an entire industry change from silt fence to Compost Filter Socks. Now, many states have changed their regulations to allow only compost filter socks. More recently, Mr. Tyler has designed and installed Living Shorelines, which are new soft armor designs to replace rigid bulkheads and hardscapes to be more resilient and sustainable against severe storm surges. He consults for market studies, composting feasibility studies, marketing tune ups for companies making and selling compost, training, and professional speaking. In addition, Mr. Tyler has also continued to develop products like GardenSoxx, the best container for growing, which can be used anywhere to generate a garden, avoiding weeds, rototilling, and uses 90% less water.