Mark Tumeo, Ph.D., J.D., P.E.

Sami Folkman, Project & Field Services Manager

Ms. Griffith has over 18 years experience as a wetland scientist and wildlife ecologist in Florida. She has worked for the Florida Fish and Wildlife Conservation Commission (FWC), Southwest Florida Water Management District (SWFWMD) and various environmental consulting firms throughout Florida. As a consultant to public and private sector clients, she has extensive experience in assessing and permitting land development, route and corridor studies, and various utility projects. Her depth of experience includes wetland impact assessment and delineation, mitigation planning and monitoring, state and federal permitting, habitat evaluation and wildlife surveys for all of Florida’s ecosystems.

Mariam Shammas, Admin

Douglas Crowson, P.G.

Jessie Griffith, Senior Ecologist, Subconsultant

Julie Earls, GISP, Senior Geospatial Analyst/Environmental Scientist

Chuck Burnite III, Senior Environmental Scientist

Mr. Crowson has almost 40 years of experience in the water resource industry. Those experiences include titles of licensed water operator (COA-4653), environmental technician, licensed geologist (PG-1773), hydrogeologist, project manager, licensed U.S. Department of Labor MSHA instructor, water resource consultant, and owner/principal of ErthWtr, LLC. Specific responsibilities include water plant & reclaimed water plant operations; database creation, data management & analysis; budget forecasting, budget administration & compliance; well design (public supply, irrigation, domestic, commercial & industry); well investigations, rehabilitations, construction & abandonments; project management for counties, municipalities, developers & industry; permit acquisition & compliance; aquifer recharge/recovery & water resource development; contract creation/selection & construction management; direct interaction with the public & regulatory agencies; and state-level rule-making.

Tim Cleveland, Field Tech

 Dr. Tumeo has more than 20 years of experience in private environmental consulting and research in environmental engineering, and has extensive experience in the realm of environmental risk assessment, policy and regulation.  His research over the past ten years has focused on the assessment, management and mitigation of environmental risk.  He has led several NSF-funded research projects in Antarctica designed to develop basic knowledge on the movement of fuel spills in ice, snow and frozen soil, and to provide information of remediation options for contaminated soil.  He was also involved in several projects in Alaska looking at remediation of contamination ranging from examination of beach cleaners used to remove crude oil from the Exxon Valdez disaster to surfactant-aided soil washing to remove creosote and pentachlorophenol used in wood preservation.

Meet the Team

Dana Gaydos is our senior environmental scientist and has over ten years of experience working in the public and private sectors of the water resources and environmental fields. Dana has been directly involved with the first Aquifer Recharge and Recovery (ARR) Project at Progress Energy's site in Bartow, Fla. With this project, she successfully obtained the first Underground Injection Control Permit (UIC) for an ARR project and has made several presentations at the annual Aquifer Storage and Recovery (ASR) and the American Institute of Professional Geologists (AIPG) conferences. She has also been heavily involved with water resources planning for several developers, industrial and commercial clients such as Ryland Homes, Progress Energy and Mosaic.

John Dumeyer, P.E., P.G., Senior Water Resource Engineer

Dana Gaydos, Principal Manager, Senior Biologist

Julie has over a decade of experience in the application of geographic information systems (GIS) and remote sensing to the issues that effect water resources in the Tampa Bay Area. She is well-versed in the use of geospatial science both in the private and public sectors. Julie has extensive experience utilizing ESRI GIS, remote sensing, Global Positioning Systems (GPS), raster analysis, geostatistics, and other statistical methods to environmental, air and water quantity/quality monitoring and modeling. Her technical expertise also includes analyzing Pump/Slug test data, mapping aquifer characteristics (using lithology), data collection and streamflow analysis. Areas of research experience include: the application of environmental models to surface and groundwater quality and quantity as well as soil erosion modeling. Julie  also has experience with converting CAD to GIS, fractal dimension analysis with remotely sensed imagery and using an ASD hand-held Field Spec© for hyperspectral analysis of water quality.

Jess Williams, GIS

Kevin Hector, Field Tech 

Sami graduated from Eckerd College in 2017 with a Bachelor of Science in Marine Biology, as well as two minors in Math and Chemistry.  Originally from Minnesota, she really enjoys working outside year round and enjoying the warm weather.  Sami has been a part of the GHS team for nearly five years now and has worked on a wide variety of projects.  She regularly conducts groundwater and surface water sampling for several monitoring locations around the Tampa Bay area.  She also helps maintain multiple water treatment systems at local hospitals and other public supply facilities.  In addition, Sami has successfully submitted and processed many water use permits for different water management districts across Florida for clients.  She is OSHA and NPDES certified.