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Scott Struck

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.

Rich Wildman, Austin Orr, and Joanna Lewis Presented at the 12th Urban Drainage Modeling Conference

2026-03-15T10:23:22-06:00January 25th, 2022|Tags: , , , |

Rich Wildman, Ph.D., PE, Austin Orr, PE, and Joanna Lewis, E.I.T. (Oregon) presented at the 12th Annual Urban Drainage Modeling (UDM) Conference at the Southern California Coastal Water Research Project research institute in Costa Mesa, California on January 10–12, 2022.

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).

Dan Pankani Coauthors Article on Estimating and Regionalizing Costs in the National Stormwater Calculator for Journal of Sustainable Water in the Built Environment

2026-03-15T10:22:27-06:00January 5th, 2021|Tags: , |

Dan Pankani, (Oregon) coauthored an article entitled “Estimating Regionalized Planning Costs of Green Infrastructure and Low-impact Development Stormwater Management Practices: Updates to the US Environmental Protection Agency’s National Stormwater Calculator” for publication in Journal of Sustainable Water in the Built Environment on December 23, 2020.

Geosyntec Staff Featured at the 2018 World Environmental & Water Resources Congress

2026-03-15T10:20:59-06:00May 30th, 2018|Tags: , , , |

Geosyntec practitioners will present at the 2018 World Environmental & Water Resources Congress at the Hyatt Regency in Minneapolis, Minnesota on June 3 – 7, 2018.

Geosyntec at the Operation and Maintenance of Stormwater Control Measures Conference

2026-03-15T10:20:43-06:00November 27th, 2017|Tags: , , , |

Geosyntec professionals delivered technical presentations, moderated sessions, and served on the Technical Program Steering Committee during the ASCE/EWRI Operation and Maintenance of Stormwater Control Measures at the Embassy Suites by Hilton Downtown Denver Convention Center in Colorado on November 6-9, 2017.

Geosyntec Participation at WEFTEC 2017

2026-03-15T10:20:33-06:00September 19th, 2017|Tags: , , , , , , , , , , , , |

As in previous years, Geosyntec staff will make a significant technical contribution to WEFTEC 2017 in Chicago, Illinois on September 30 - October 4, 2017.  

Stormwater Management

2026-04-23T14:26:16-06:00June 1st, 2017|Tags: , , , , , , , , , , , , , , , , , , , , |

A significant aspect of Geosyntec's water and natural resources practice is our stormwater management expertise. In fact, the firm is known for its innovative work in urban stormwater and surface water quality management, including green infrastructure design for CSO controls, Low Impact Development, Best Management Practice (BMP) design, hydromodification management, and erosion and sediment control. Our personnel have helped shape the state of these practices nationally over the past two decades via joint research and project work with civil engineering faculty at outstanding academic institutions, as well as continuous involvement in original research, development, and application of techniques and technologies. As a result, Geosyntec is recognized for frequently facilitating the transfer of technologies from academia to commercial and public use. Our professionals have been a critical and ongoing part of an award-winning team maintaining the ASCE/US EPA International Database on Urban Stormwater BMP Design and Performance.  Geosyntec's experts in erosion control have developed and implemented nationwide site compliance audit programs, and have also provided critical post-fire emergency services after the San Diego and Orange County fires. Stormwater management planning and design (urban, transportation, industrial, commercial, agricultural, MS4 compliance) Sustainable stormwater solutions: green infrastructure, stormwater best management practices, low impact development, rainwater harvesting Stormwater monitoring and modeling Water quality crediting and watershed-based mitigation approaches NPDES permitting and receiving water studies (watershed planning, total maximum daily loads and implementation plans) Erosion and sediment control: Construction NPDES compliance and post-fire erosion and sediment control

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