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Johnson Engineering > Services We Provide > Water Resources > Water Resources – Water Quality Studies > Team

Tim Denison

Tim joined Johnson Engineering is 2003 and manages water quality assessment projects for our clients. He coordinates with a group of environmental scientists responsible for the sampling and monitoring of a variety of surface water and groundwater quality projects. His current projects involve testing best management practices (BMPs), Total Maximum Daily Load (TMDL) monitoring, stormwater runoff characterization, flow monitoring and pollutant load evaluation.  He is a member of the Florida Stormwater Association and has presented at several water quality conferences.

Michael Lohr, P.S.M.

Mike is a registered Surveyor and Mapper who heads up the company’s GIS efforts as well as manages water quality and water level data collection projects for both private and public agency clients. He has a background in laboratory work as well as construction inspection and drafting/design of major water control structures in southwest Florida. He joined Johnson Engineering in 1984 and has been involved with the initial field screening work for the Fort Myers and Lee County National Pollution Discharge Elimination System (NPDES) programs. He continues to provide NPDES stormwater facilities inspection and reporting for several local communities, including Pelican Landing, The Brooks and River Ridge. Mike has managed several large water quality research projects for the Florida Department of Environmental Protection, Lee County and The Bonita Bay Group. These studies have included Pervious/Impervious Pavement Study at Shadow Wood Preserve, Deep and Shallow Wet Detention Lake Study (Dissolved Oxygen) at The Brooks, Littoral Plantings Study at Bonita Bay, and Effectiveness of BMP Practices in Southwest Florida for Lee County. His current projects include a Green Roof Study at Shadow Wood Preserve, Long Discharge Study (stormwater in Lee and Collier Counties), and assisting with background water quality and water level data collection and management efforts for Babcock Ranch Community in Charlotte County. His current GIS work includes development of mobile mapping techniques to deploy GIS maps onto staff and client smartphones and tablets and integration of stormwater facilities into enterprise geodatabases.

Staci Thomas

Staci joined Johnson Engineering in 2012 as an Environmental Scientist. She has contributed on numerous Phase I and Phase II Environmental Site Assessments (ESAs) within Lee County and Southwest Florida. She is instrumental in addressing the guidelines and requirements listed in the current and proposed ASTM E-1527 standard practices for Phase I ESAs. In addition, she conducts surface water and groundwater sampling for a variety of local water quality projects as well as performs statistical analysis and reporting of water quality data. Staci has received training from FDEP on the current and proposed Standard Operating Procedures (SOPs) for Surface Water, Groundwater, Wastewater, and Drinking Water as well as completed ASTM’s E1527 Phase I Environment Site Assessment Course.