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Sam Williams

Pharmaceuticals in the Environment (PiE)

2026-07-02T07:32:56-06:00March 27th, 2026|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Lead Practitioners Nothing Found

Pesticide Product Services

2026-07-02T07:45:44-06:00November 23rd, 2021|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Product manufacturers, marketers, and clients are challenged with significant investments of time and money when developing and launching pesticidal products. Critical decisions on marketing, efficacy claims and pesticidal mode of action determine regulatory registration track, required testing programs, and the ultimate path to market. Geosyntec has broad experience in the regulation and registration of all classes of pesticide products (conventional pesticides, biopesticides, and antimicrobials) and provides science-based, business-focused support to guide clients through decision making, product positioning, and ultimately registration and market introduction. Geosyntec's Pesticide Product Services supports clients with insightful, innovative solutions. Geosyntec's team of toxicologists, risk assessors, regulatory specialists, and chemists have extensive experience and knowledge of pesticide testing, submission, and label requirements under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). We know how to position projects for efficient registration review and processing, and how to avoid misinterpreted guidance, labels, and efficacy claims that can add months to review timeframes and can significantly increase costs. We can assist with navigating all areas of FIFRA including: Preparing a product/pesticide registration strategy Meeting with and advocating on behalf of companies with regulators Developing and submitting FIFRA registration packages, renewals, and label updates Product label content development Preparing inert ingredient petitions Developing data waivers and rationales Scoping, placing, and monitoring product toxicity, physical characteristic, and efficacy studies Responding to regulator requests Pesticide device strategy, claims, data, and regulatory tracking State-level registrations Geosyntec and our wholly-owned SiREM lab manage data generation for new product registrations and amending existing products, particularly for antimicrobial products. Geosyntec and SiREM provide in-depth analytical consulting support covering toxicology studies and antimicrobial efficacy testing. SiREM provides Good Laboratory Practice (GLP) standard antimicrobial testing (i.e., bacteria and virus) to support required testing and methods under FIFRA. The Geosyntec and SiREM team allows for expert level review and strategy development of testing programs, as well as expedited access to efficacy testing, which can save months in registration timelines. Schedule a Meeting >

Chemical Management Programs

2026-04-23T14:17:48-06:00November 23rd, 2021|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Clients are faced with chemical risks throughout their business products, facilities, and supply chains. Increased regulations at global, regional, and national levels; combined with an expanding list of chemicals of concern; requires companies to demonstrate compliance to regulators while also addressing consumer and stakeholder expectations. Geosyntec provides advisory and evaluation support for multiple aspects of chemical management, from regulatory compliance to safety and supply chain transparency. We actively support chemical safety assessments and product stewardship summaries to help chemical and product manufacturers address public health concern challenges, regulations and data gaps associated with chemicals in the marketplace. Our services include: Compliance Tracking Management: Geosyntec's compliance team supports companies across applicable regulatory phases in their use and management of chemicals and production of a range of industrial and consumer products. This requires detailed knowledge of applicable regulatory programs; the status of specific chemicals under those programs; pending revisions and updates to the programs; and recordkeeping and reporting procedures to maintain compliance. Chemical Risk Assessment: Geosyntec's support services address human health and ecological risk assessment; hazard identification and evaluation; and exposure assessment. Restricted Substances Lists and Registrations: Our experienced practitioners know regional, national and state programs such as the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH), the Toxic Substances Control Act (TSCA), the China State Administration of Work Safety (SAWS) 53, and California Proposition 65. Characterization Testing Programs: Testing programs include human health and ecological toxicity; chemical efficacy/claims verification; chemical content and physical characteristics. Supply Chain Stewardship: Geosyntec helps clients with retailer supplier portal content; registration and tracking; Environmental, Social, and Governance (ESG) reporting; chemical and product content and safety dossiers, and Safety Data Sheets .

Global Product Stewardship

2026-06-30T11:44:06-06:00September 27th, 2021|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

For decades, global chemical control and downstream product regulations, bans, restrictions, and reporting obligations have proliferated, creating major challenges for multinational corporations (MNCs).

Geosyntec Staff to Contribute to AEHS Conference on Soil, Water, Energy, and Air

2026-03-15T10:22:34-06:00March 17th, 2021|Tags: , , , , , , , , |

Geosyntec professionals will make a significant technical contribution at the 2021 Association for Environmental Health and Sciences (AEHS) Foundation’s International Conference on Soil, Water, Energy, and Air to be held virtually on March 22-25, 2021.

Geosyntec Personnel to Present at AEHS East 2020

2026-03-15T10:22:16-06:00October 12th, 2020|Tags: , , , , , , , , |

Multiple Geosyntec practitioners will present at the virtual 36th Annual International Conference on Soils, Sediments, Water, and Energy on October 19-23, 2020.

Geosyntec to Present at the 30th Annual International Conference on Soil, Water, Energy, and Air

2026-03-15T10:21:57-06:00March 6th, 2020|Tags: , , , , , , |

Geosyntec practitioners will present at the Association for Environmental Health and Sciences (AEHS) Foundations' 30th Annual International Conference on Soil, Water, Energy, and Air on March 16-19, 2020. The conference will be held at the DoubleTree Mission Valley in San Diego, California.

Geosyntec Makes Multiple Contributions to DRI’s Toxic Torts and Environmental Law Conference

2026-03-15T10:21:53-06:00February 13th, 2020|Tags: , , , , , |

Chase Holton, Ph.D., PE (Colorado) will present "Factors Affecting CERCLA Sites: From Site Listing to the Five-Year Review" at DRI's Toxic Torts and Environmental Law at the Pointe Hilton Tapatio Cliffs Resort in Phoenix, Arizona on February 20, 2020.

Andrea Siefers Coauthored AERMOD Modeling for Health Impact Assessment of Dimethyl Mercury Paper Presented at the Air Quality Modeling Conference

2026-03-15T10:21:30-06:00June 3rd, 2019|Tags: , , , , , , , , , , , , , , , |

Andrea Siefers, PE (North Carolina) coauthored a paper entitled "AERMOD (American Meteorological Society/Environmental Protection Agency Regulatory Model) Modeling for Health Impact Assessment of Dimethyl Mercury" that was presented at the Guideline on Air Quality Models: Planning Ahead Conference from March 19-21, 2019.

Geosyntec Staff Contribute to the AEHS 29th Annual International Conference on Soil, Water, Energy, and Air

2026-03-15T10:21:19-06:00March 18th, 2019|Tags: , , , |

Geosyntec professionals Ravi Arulanantham, Rula Deeb, Robert Ettinger, Theresa Gabris, Matthew Mraw, and Sam Williams will make technical contributions at the Association for Environmental Health and Sciences (AEHS) 29th Annual International Conference on Soil, Water, Energy, and Air at the DoubleTree Mission Valley in San Diego, California on March 18-21, 2019.

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