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John Merrill

Bruce Marvin, John Merrill, and Balaji Seshasayee Coauthored Article on Treatment of PFAS in Groundwater for HydroVisions

2026-03-15T10:23:26-06:00February 9th, 2022|Tags: , , |

Bruce Marvin, PE, John Merrill (California); and Balaji Seshasayee, PE (Illinois) coauthored an article entitled "Treatment of PFAS in Groundwater - An Overview" for publication in the 2021 Winter Issue of HydroVisions.

John Merrill, Rula Deeb, and Lydia Dorrance Coauthored Managing PFAS in Environmental Due Diligence: The Future’s Uncertain for HydroVisions

2026-03-15T10:22:37-06:00March 24th, 2021|Tags: , , |

John Merrill, Rula Deeb, Ph.D., BCEEM, PMP, and Lydia Dorrance, Ph.D., (California) coauthored an article entitled “Managing PFAS in Environmental Due Diligence: The Future’s Uncertain” for publication in the Spring 2021 issue of HydroVisions.

Environmental, Social, and Governance

2026-08-17T11:41:56-06:00October 21st, 2020|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Environmental, Social, and Governance (ESG) Connect With Us Investors and consumers increasingly demand companies improve their operations as measured by Environmental, Social and Governance (ESG) standards. Purposeful ESG and sustainability programs demonstrate to stakeholders a company’s commitment to operate responsibly in everything they do. A tailored ESG strategy can mitigate business risks, leverage opportunities, and drive long-term business value. Geosyntec helps our clients identify ways to embed ESG and sustainability goals into their ....

Geosyntec Staff Featured at the Emerging Contaminants Summit 2020

2026-03-15T10:21:57-06:00March 4th, 2020|Tags: , , , , , , , , , , |

Geosyntec will once again be a Platinum Sponsor of the Emerging Contaminants Summit to be held from March 10-11, 2020 at the Westin Westminster in Westminster, Colorado. Geosyntec developed the technical program for the conference and organized the student program and competition.

Geosyntec Practitioners Coauthored an Article on 1,2,3-Trichloropropane in Groundwater for Publication in the Current Pollution Reports

2026-03-15T10:21:48-06:00January 6th, 2020|Tags: , , , , , , |

John Merrill; Eric Suchomel, Ph.D., PE, Srinivasa Varadhan, Ph.D., PE; Lea Kane, P.G., Elisabeth Hawley, PE, Rula Deeb, Ph.D., BCEEM (California); and Melissa Asher, PE (Washington) coauthored a paper entitled "Development and Validation of Technologies for Remediation of 1,2,3-Trichloropropane in Groundwater" published in Current Pollution Reports on pages 1-10 in the Topical Collection on Emerging Contaminants on November 11, 2019.

Per and Polyfluoroalkyl Substances (PFAS)

2026-07-22T10:43:17-06:00August 15th, 2018|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Our experts look at the “bigger picture” using rigorous and fundamental scientific principles. We utilize various tools in appropriate and defensible ways for client advocacy in regulatory negotiations, property transactions, claim disputes, and smart site management. Advancing the State of the Practice in PFAS Site-Specific Technical Reviews and Investigation Strategies U.S. AIR FORCE CIVIL ENGINEER CENTER, MULTIPLE CONFIDENTIAL CLIENTS Critically reviewed site-specific data, conceptual site models, and identified data gaps Prepared scientifically-rigorous PFAS ....

Groundwater Assessment and Remediation

2026-06-30T09:11:21-06:00February 11th, 2015|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Geosyntec’s expertise in efficient site characterization, including sites that exhibit complex groundwater-flow regimes, has distinguished our firm as a leader in groundwater assessment and groundwater remediation. Our practitioners address a broad suite of contaminants, including metals, chlorinated organic chemicals, petroleum hydrocarbons, and emerging contaminants, and use award-winning, technology-based remediation strategies that are often first-to-field. Many of our hydrogeologists specialize in modeling the fate and transport of contaminants through the most difficult types of media, including fractured and karst bedrock.

Overview of Geotechnical and Geological Analysis, Modeling, and Engineering

2026-10-02T12:46:32-06:00November 12th, 2014|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Clients turn to Geosyntec's nationally recognized geotechnical and geological engineers to develop projects and services that efficiently use geotechnically challenging sites. We apply advanced technologies and leverage our proven practice leadership to provide clients with dependable, cost-effective solutions and customized services while meeting aggressive construction schedules.

Infrastructure Planning, Engineering, and Design

2026-08-31T14:16:52-06:00November 12th, 2014|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Across industries and project types, delivery is increasingly shaped by regulatory complexity, environmental constraints, stakeholder expectations, and the need to accelerate schedules while managing costs.

Overview of Waste Management Planning, Engineering & Design

2026-04-29T11:39:03-06:00November 12th, 2014|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Geosyntec is a recognized leader in waste containment facility permitting and design. From concept to implementation, we assist our clients in achieving efficient, safe, and secure containment of their regulated wastes that require land disposal. Our practitioners assist our clients in increasing commercial viability, achieving and maintaining compliance, and ensuring that short- and long-term needs are met for new and existing sites and projects. We are experienced in the permitting, design, and construction of expansions and closures of: Municipal solid waste (MSW) landfills Hazardous waste landfills Coal combustion residual landfills Construction and demolition waste landfills Radiological and mixed waste landfills Tailings impoundments Mine waste rock piles and dumps Our waste containment practice specializes in addressing the most complex and challenging projects through our innovative technologies and designs. Our practitioners assist clients with permitting greenfield sites and existing site expansions, maximizing disposal capacity, and solving complex site challenges.   Our practitioners also provide investigation, design, permitting, and construction oversight for on-site disposal facilities for cost-effective, safe on-site disposal of soils, sludges, and miscellaneous debris with a broad range of contaminants, including mercury, PCBs, and volatile and semi-volatile organic compounds.

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