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Matthew Wissler

Water Supply and Wastewater

2026-08-18T12:40:18-06:00August 18th, 2026|Tags: , , , , , , , , |

Water and wastewater agencies face growing challenges from climate impacts, aging infrastructure, and the need for sustainable and resilient management of resources. To meet increasing demand, they must proactively manage water and wastewater infrastructure, assets, and data.

Geosyntec Practitioners Featured at Florida Environmental Network’s Environmental Permitting Summer School

2026-03-15T10:23:49-06:00July 13th, 2022|Tags: , , , , , |

Many Geosyntec practitioners will make meaningful contributions to the 36th Environmental Permitting Summer School produced by the Florida Environmental Network, Inc (FENI) and held July 19 to 22, 2022 on Marco Island, Florida. The conference will be held at the JW Marco Island Marriott.

Matt Wissler, Mike Hardin, and Kevin Tyre to Speak, and multiple Florida Geosyntec Consultants to Attend the Florida Stormwater Association Annual Conference

2026-03-15T10:23:45-06:00June 15th, 2022|Tags: , , |

Matt Wissler, P.G. (Florida) and Mike Hardin, Ph.D., PE, CFM (Florida) will present "Groundwater, Out of Sight, Out of Mind" and Kevin Tyre (Florida) will present "Total Immersion: What's in Lee County Waterways" at the Florida Stormwater Association Annual Conference at Sanibel Harbor Marriot in Fort Myers, Florida from June 15th through 17th, 2022.

Geosyntec Staff to Present on Brownfields Redevelopment at Florida & Alabama Brownfields Conference Part 2

2026-03-15T10:23:37-06:00April 22nd, 2022|Tags: , , , , |

Will Burke, P.G., (Alabama); Cristina Graver, PE; Matthew Wissler, P.G.; Katie Fox, PE; and Esteban Biondi (Florida) will present on brownfields redevelopment at the Florida & Alabama Brownfields Conference 2021 Part 2 at the Hilton Pensacola Beach in Pensacola Beach, Florida on April 24–27, 2022.

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.

Congratulations to Newly Promoted Senior Principals in 2021

2026-03-15T10:22:39-06:00April 12th, 2021|Tags: , , , , , , , , , , , , |

On behalf of the Leadership Committee (LeadCom) and the Principal Nomination Review Committee (PNRC), I am pleased to announce the promotion of Alex Mckenzie‐Johnson, Amer Hussain, Carrie Pendleton, Dave Bonnett, David Zell, Eric Sager, James Culp, Jamey Dotson, Jim Deitsch, Matt Wissler, Rachel Klinger, Stephen Foster, and Todd Kafka to the position of Senior Principal within the Geosyntec family of companies.

Geosyntec Practitioners Presented on Water Distribution and Stormwater Management at the GAWP Spring Conference & Expo

2026-03-15T10:21:30-06:00May 31st, 2019|Tags: , , , , , , , , , , |

Shira Colsky, PE, Jared Eubanks, PE, Antonio Sanchez, PE (Georgia), and Jessie Fears (Tennessee) presented on water distribution and stormwater management at the Georgia Association of Water Professionals (GAWP) Spring Conference & Expo at the Columbus Trade Center in Columbus, Georgia on April 23-24, 2019.

Matthew Wissler, PG

2026-05-26T08:48:08-06:00March 29th, 2017|Tags: , , , |

Matthew Wissler is a Senior Principal Hydrogeologist with more than 19 years of experience focused on the evaluation and permitting of water resources, hydrogeologic investigations relating to resource and waste permitting, groundwater modeling of complex aquifer systems, contaminated site assessment and remediation, and vapor intrusion assessment and mitigation.

Congratulations to Newly Promoted Principals in 2017

2026-03-15T10:20:13-06:00March 20th, 2017|Tags: , , , , , , , , , , , , |

Geosyntec is pleased to announce the promotion of Andrea Braga, Brandon Mogan, Christopher Gale, Douglas Baumwirt, Janet Goodfellow, Jennifer Nyman, Jeremy Morris, John Persico, Len deVlaming, Matthew Wissler, Melissa Schmitt, Tamara Hebeler, Thomas Bristol, and Victor Damasceno to Principals within the Geosyntec Family of Companies.

Overview of Contaminated Site Assessment and Cleanup

2026-08-18T14:34:36-06:00November 12th, 2014|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Geosyntec practitioners rank among the world's top professionals in providing site assessment and remediation services at a wide range of impacted sites using innovative technologies and solutions that consistently advance the state of the practice. Through our use of innovative technologies and solutions, we provide our public and private sector clients with a wide array of services to address their toughest challenges. Our contaminated site practitioners guide our clients through a specialized remediation plan, consult on regulatory strategies, and develop a comprehensive cleanup approach. We can address numerous types of media, including contaminated soils, sediments, and groundwater. Advancing the State of the Practice Geosyntec's practitioners are pioneers in site assessment and remediation. Our senior practitioners have developed and authored guidance material and courses for local, state, and national agencies and associations on remediation techniques and technologies. Working with the Interstate Technical Regulatory Council, Geosyntec practitioners taught a training course on vapor intrusion, including mitigation options for the development of vapor-impacted brownfield sites. Geosyntec practitioners also wrote the guidance document on evaluating, optimizing, or ending post-closure care at impacted sites, including brownfield sites, and developed a patented approach for sub-slab vapor migration mitigation allowing residential, commercial, and industrial development on sites impacted by vapor intrusion. Our specialists routinely collaborate with prominent national researchers from academia and government agencies to provide innovative and defensible strategies for sites with contaminated sediments. For example, we collaborated with the United States Geological Survey (USGS) to remediate chlorinated solvent-contaminated marsh sediments by applying a bioreactive mat system embedded with a dehalogenating microbial consortium, a technology Geosyntec helped develop. This project and partnership earned our client recognition as a finalist for the Service to America Medal awarded by the Partnership for Public Service. Through a collaborative research project with the University of Florida, Geosyntec professionals helped develop the FLUCL software package for the Florida Department of Environmental Protection. This software is used to calculate exposure point concentration statistics in risk assessment and was the first of its kind to contain algorithms for censored datasets. FLUCL has received endorsements from several United States Environmental Protection Agency regions and the California Environmental Protection Agency. Geosyntec scientists also pioneered the use of genetic molecular tools to characterize microbes in environmental media and are engaged in applied research and development with top academic institutions around the world, including the University of Toronto, Cornell University, and the Georgia Institute of Technology.

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