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Douglas Larson

Pharmaceuticals in the Environment (PiE)

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Lead Practitioners Nothing Found

Rebecca Daprato, Rachel Klinger, and Doug Larson Teach at Princeton Groundwater Remediation

2026-03-15T10:24:25-06:00July 6th, 2023|Tags: , , |

Rebecca Daprato, PhD, PE, (Colorado), Rachel Klinger, PE, (Florida), and Doug Larson, PhD, PE (Ohio) taught sessions at the Princeton Groundwater Remediation Course in Las Vegas, Nevada, on June 19 to 21, 2023. Megan Houlihan (California) and Ali Cochrane (Washington) attended the course.

Doug Larson to Present on Remediation Engineering at the Princeton Groundwater Pollution and Hydrology Course, Brasil Edition

2026-03-15T10:23:56-06:00September 19th, 2022|Tags: |

Douglas Larson, Ph.D., PE, LSP (Massachusetts) will be one of five instructors of the Princeton Groundwater Pollution and Hydrology Course Brasil Edition 2022. The course will be held September 26 through 30, 2022, at the Hotel Mercure Jardins in Sao Paulo.

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

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

Geosyntec Project Awarded Grand Prize for AAEES 2020 Excellence in Environmental Engineering & Science

2026-03-15T10:22:20-06:00October 14th, 2020|Tags: , , , , , , , |

The American Academy of Environmental Engineers and Scientists® (AAEES) has awarded Geosyntec's Northwest Corner Project the 2020 Excellence in Environmental Engineering & Science Grand Prize for Environmental Sustainability.

Geosyntec Staff Featured at the 34th Annual International Conference on Soils, Sediments, Water and Energy

2026-03-15T10:21:08-06:00October 3rd, 2018|Tags: , , , , , , , , , , , , , , , , , |

Geosyntec will make a substantial technical contribution at the Association for Environmental Health and Sciences Foundation (AHES) Foundation's 34th Annual International Conference on Soils, Sediments, Water and Energy at the University of Massachusetts in Amherst, Massachusetts on October 12-18, 2018.

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 ....

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