What We Do


  • Randy Auler
    The Highlands Park Wetland Improvement is another testament to how great a job you and the team does for our community! I really appreciate all that you do to make Westerville a great place!
    Randy Auler
    Director, Westerville Parks & Recreation
  • Randy Auler
    The Highlands Park Wetland Improvement is another testament to how great a job you and the team does for our community! I really appreciate all that you do to make Westerville a great place!
    Randy Auler
    Director, Westerville Parks & Recreation
  • Bill Fisher
    Crawford Park District is very pleased with the full service wetland at Heckert Nature Preserve that was designed and constructed by MAD Scientist Associates. Their knowledge and expertise were paramount in developing the plan deliverables and just as important was the care they gave to meeting site specific needs and the wishes of our Park District staff.
    Bill Fisher
    Director, Crawford Park District
  • Greg
    The team at MAD Scientist Associates have consistently proven their dedication and expertise, providing quality ecological services on time and within well defined budgets. I have definitely been pleased with their well thought out and written project deliverables.
    Senior Scientist/Project Manager, Columbus Area Environmental Consulting/Engineering Firm
  • Ken Belczak
    With my thirty years experience, and knowing Mark’s company since it was established, I can say it’s always refreshing working with them and learning something new. Mark’s company leaves no stone unturned, and that experience is something I look forward to. The attention to detail and working with the environment that has been put in front of us, his company always delivers a good product. I would recommend the experience.
    Ken Belczak
    Smith & Associates Excavating, Inc.
  • Barb
    Many sound environmental management decisions regarding wetlands, vernal pools, stream restoration, woodland/wildlife management have been made for our municipal parks based on data collection by the MAD Scientist Associates group.
    Municipal Parks Manager
  • Paul
    We’ve been pleased with the high level of quality MAD Scientist Associates delivers: Strong technical skills, concise presentations, and great interpersonal skills. Clearly Mark and his team are passionate about environmental protection and the importance of wetlands and streams to the broader area of water quality. MAD Scientist Associates also presents solutions to the dynamic challenges in wetland and stream management. When choosing a [water quality] professional make sure you find someone with the passion and the skills to ensure your project succeeds.
    Environmental Manager, Transportation Industry
  • Tim
    MAD Scientist Associates has been very instrumental in securing a grant to purchase an 80-acre nature preserve for our community. Their study provided a Baseline Ecological Survey and Wetland Determination Report and a Five-Year Plan to maintain and enhance the preserve that has invaluable information.
    Director of Parks and Recreation
  • Carrie Elvey
    Mark’s workshop on creating vernal pools was right on target. The group left with the information they needed, the hands-on experience they wanted, and the enthusiasm we were hoping for – enthusiasm that’s bringing them back next month to get their hands dirty creating our very own new vernal pool. Thanks to Mark for all the hard work he put into the program!
    Carrie Elvey
    Naturalist, The Wilderness Center
  • Bill Resch
    Our school district has benefited greatly by using Mark Dilley of MAD Scientist Associates as our primary consultant on the management and assessment of the streams and wetlands in our Nature Preserve. Educational outreach by Mark and his colleagues have been an inspiration to our students as well as to the citizens of our community. The yacht itself met our expectations and was very clean and comfortable. We are already thinking about next year.
    Bill Resch
    K-12 Environmental Program Coordinator New Albany-Plain Local Schools
  • Kristen Piper
    MAD Scientist Associates and their sub consultant were able to provide the City of Delaware necessary background information for our low-head dam removal project. The wetland and mussel surveys performed were thorough and generated reports meeting the Nationwide Permit 27 requirements. The staff submitted a complete Nationwide Permit 27 application for approval and approval was issued without any question from the Army Corps of Engineers, Huntington District. This is a testament to the quality of work MAD Scientist deliver with their projects. The City of Delaware highly recommends working with Mark and staff for environmental services. They have proven to be very knowledgeable and deliver quality work in a timely manner.
    Kristen Piper
    Watershed Coordinator & Project Manager, City of Delaware – Public Utilities
  • Michael Hooper
    You, your staff and sub-consultants did an excellent job and should be recognized for your expertise and efforts. Great OPRA award-winning project.
    Michael Hooper
    Park & Recreation Development Administrator - City of Westerville
  • John Panovsky
    I have worked with MAD Scientist Associates for over ten years. I find them to be responsive, knowledgeable, and easy to work with. Additionally I appreciate Mark’s practical approach to projects and his willingness to tailor his services to the needs of the project.
    John Panovsky
  • Kim
    MAD Scientist Associates are a wonderful resource to the Westerville Community. They have educated Westerville students, staff, and parents on stream monitoring and water quality for years. I have also been to several community sponsored events where they offered their expertise. It is so exciting to watch children and adults having fun and learning while knee deep in a creek with a net. Working with MAD Scientist Associates is the favorite activity of the year for many of my students!
    Science Magnet School Teacher


253 North State St., Suite 101
Westerville, OH 43081


8:30 AM – 5:00 PM
Monday – Friday

Professional Wetland Scientist
MAD Scientist Associates EDGE Certification
MAD Scientist Associates Ohio WBE Certified