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Mark Ellard

Hydropower Licensing and Compliance

2026-09-23T13:26:26-06:00April 15th, 2026|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

To help clients achieve stringent water quality goals, Geosyntec provides rigorous assessment and modeling services to assess the sources and factors that affect the delivery of critical pollutants across watersheds. Through our comprehensive studies and analyses, we provide technically defensible tools and approaches that can be used in the development of Total Maximum Daily Load (TMDL) calculations and watershed protection plans. In addition, we frequently turn to Use Attainability Analyses to examine site-specific water quality criteria that affect attainability goals under natural, human-caused, and economic conditions. Our hydrodynamic and water-quality models integrate inputs from point and nonpoint sources to support our engineers and scientists as they study impacts on water quality in receiving water. These models allow us to understand the assimilative capacities of a given body of water, propose best management practices that can affect pollutant impacts, and predict the time required for a system to recover after being altered. Using watershed studies, water quality monitoring, and hydrological and hydrodynamic modeling, we also can assess compliance with local, state, and federal water quality standards. Using all this information, we are better able to evaluate the magnitude, frequency, and duration of impacts of a wide variety of pollutant sources. Our practitioners offer extensive experience with geographic information system applications for spatial analysis, planimetric and thematic mapping, and data representation. We employ watershed models including the Watershed Characterization System (WCS), Better Assessment Science Integrating Point and Nonpoint Sources (BASINS), and the Watershed Assessment Model (WAMView). We also employ the Water Quality Analysis Simulation Program (WASP), the Environmental Fluid Dynamics Code (EFDC), and the Stream Water Quality Model (QUAL2K) for hydrodynamic and water-quality models. Our practitioners are at the forefront of policy analyses, regulatory compliance, and technology applications that promote sustainable water resources management and ecosystem restoration. We have extensive experience helping local governments develop and negotiate long-term control plans for combined sewer overflows, National Pollutant Discharge Elimination System (NPDES) permits, and consent orders. We also comment on Clean Water Act issues at the state and national level, including the development of new recreational use criteria for water bodies across the county and for the U.S. Environmental Protection Agency's new framework for integrated planning for wastewater and stormwater.

Mark Ellard Coauthors Stormwater Section of the 2021 ASCE Florida Infrastructure Report Card

2026-03-15T10:23:15-06:00November 18th, 2021|Tags: |

Mark Ellard, PE, CFM, D.WRE, ENV SP (Florida), longtime member of the Florida Section of the American Society of Civil Engineers (ASCE), coauthored the stormwater section of the 2021 ASCE Florida Infrastructure Report Card.

Geosyntec Practitioners Contribute to 35th Annual Environmental Permitting Summer School

2026-03-15T10:22:52-06:00July 15th, 2021|Tags: , , , , |

Geosyntec practitioners will contribute to sessions for the 35th Annual Environmental Permitting Summer School presented by the Florida Environmental Network and the Florida Chamber Foundation at the JW Marriot in Marco Island, Florida, July 21-23, 2021. Presenters include Matt Wissler, Eric Sager, Mark Ellard, Joe Applegate, and Jim Langenbach.

Geosyntec Technical Webinar Series

2026-03-15T10:22:45-06:00May 19th, 2021|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

For more information about the events, contact:

Geosyntec Practitioners to Complete Stormwater Harvesting Demonstration Project at Orange County Public Works

2026-03-15T10:22:27-06:00January 29th, 2021|Tags: , , , , |

Mike Hardin, Ph.D., PE, Mark Ellard, PE, DFM, D.WRE, ENV SP, Nick Hartshorn, PE, Dan Wen, Ph.D., and Yunjie Zhang (Florida) have completed their stormwater harvesting demonstration project at the Orange County Public Works facility in Florida.

Mark Ellard and Mike Hardin to Present on Stormwater at Florida Stormwater Association’s 2020 Annual Conference

2026-03-15T10:22:07-06:00July 6th, 2020|Tags: , |

Mark Ellard, PE, CFM, D.WRE, ENV SP; and Mike Hardin, Ph.D., PE, CFM (Florida) will deliver four presentations at the Florida Stormwater Association's (FSA) 2020 Annual Conference on July 15-17, 2020.

Mark Ellard to Present on Coastal Resiliency at the 33rd Annual National Conference on Beach Preservation Technology

2026-03-15T10:21:52-06:00February 4th, 2020|Tags: |

Mark Ellard, PE, CFM, D.WRE (Florida) will present "Future 100 Year Flood Map for Coastal Resiliency in Broward County" at the 33rd Annual National Conference on Beach Preservation Technology at the Hyatt Sarasota in Sarasota, Florida at 11:20 a.m. on February 7.

Geosyntec Professionals Featured at the 32nd Annual Environmental Permitting Summer School in Florida

2026-03-15T10:21:00-06:00July 10th, 2018|Tags: , , , , , , , |

Geosyntec will make a substantial technical contribution to the 32nd Annual Environmental Permitting Summer School produced by the Florida Environmental Network, Inc. (FENI) on Marco Island, Florida on July 17-20, 2018.

Mike Hardin Presented Optimization Analysis of the City of Lakeland’s Street Sweeping Program at the Florida Stormwater Association’s 2018 Annual Conference

2026-03-15T10:21:00-06:00June 28th, 2018|Tags: , , |

Mike Hardin, Ph.D., PE, CFM (Florida) presented "Optimization Analysis of Lakeland's Street Sweeping Program" at the Florida Stormwater Association's 2018 Annual Conference in Fort Myers, Florida on June 14, 2018.

Geosyntec to Attend American Bar Association’s 36th Water Law Conference

2026-03-15T10:20:54-06:00April 16th, 2018|Tags: , , , |

Geosyntec staff will attend the American Bar Association (ABA) Section of Environmental, Energy, and Resources (SEER) Law 36th Water Law Conference in Orlando, Florida on April 16-18, 2018.

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