May 19, 2021

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Please sign up for Geosyntec’s Technical Webinar Series to engage with our top practitioners regarding state-of-the-art practices and thoughtful solutions to our clients’ most complex environmental, natural resources, and civil infrastructure problems. Professional development hours will be made available to all attendees. Sign up for these free one-hour webinars using the links below!

Innovative Solutions to Vapor Intrusion Challenges: Past Successes and Prospects for the Future

Tuesday December 13, 2022, 9 am PT/12 pm ET
Speakers: Robert Ettinger, Todd McAlary, Ph.D., P.Eng., P.G., and Helen Dawson, Ph.D.

Join industry-renowned experts, each with more than three decades of experience in tackling the most challenging vapor intrusion problems. The speakers will discuss Geosyntec’s successes in addressing complex issues, look to the future on remaining challenges, and reflect on regulatory expectations, community relations, emerging contaminants, and more. Historically, obstacles to achieve final decisions for vapor intrusion sites were often driven by uncertainties in temporal and spatial variability, background sources, preferential pathways, and long-term site management. Current and future challenges include emerging contaminants, risk management/risk communication, and holistic approaches to implementing and maintaining building health. The speakers will describe examples of creative solutions that have benefitted from applied research and will speak to the value of regulatory credibility to facilitate more effective and lasting outcomes.

Meet the VI Experts Session

Wednesday December 14, 2022, 9 am PT/12 pm ET
Speakers: Robert Ettinger, Todd McAlary, Ph.D., P.Eng., P.G., and Helen Dawson, Ph.D.

Sign up here to participate in an interactive panel discussion with three of the world’s most experienced consultants in the field of vapor intrusion. This follow-on webinar is dedicated to answering your questions and no formal presentations will be given. You will have the opportunity to provide written questions ahead of this session or you may ask your questions live during the webinar.

Geostructural and Construction Engineering: Bridging the Gap Between Construction and Design

Tuesday February 14, 2023, 9 am PT/12 pm ET
Speakers: Nathan Holmer, P.E., S.E. and Terry Holman, Ph.D., P.E.

This presentation will provide an update on several areas of continued client and regulatory focus for per- and polyfluoroalkyl substances (PFAS) including PFAS source evaluation, presence and engineering controls for PFAS in stormwater, and ecological risk assessment. Several factors make it challenging to interpret PFAS detections including the use of PFAS in a multitude of industrial and commercial products and processes, degradation of PFAS precursors over time in the environment, and the longevity of terminal PFAS end-products. Forensic tools will be described to evaluate likely sources of PFAS in the environment, compare PFAS detections and on-site signatures to background concentrations, and develop a conceptual site model. Regarding stormwater, regulatory agencies are beginning to evaluate PFAS occurrence and transport to aquatic receptors, and develop monitoring programs for PFAS under the National Pollutant Discharge Elimination System (NPDES) framework. Tools for evaluating and assessing PFAS in stormwater and the effectiveness of passive and active stormwater controls for PFAS will be described. Finally, the latest and greatest research on PFAS aquatic toxicity and implications for ecological risk assessment will be presented. Tools and references to guide the establishment of science-based site-specific screening levels for PFAS will also be discussed.

Challenges and Solutions for Mine Site Closure

Tuesday March 14, 2023, 9 am PT/12 pm ET
Speakers: Jay Griffin, P.E., and Henning Holstrom, Ph.D., MAUSIMM, MAIG

Mine closure includes the entire process to re-establish the mine footprint for future land use at the end of operations. Planning for closure should be completed early and throughout the lifecycle of the mine to avoid future environmental and social liabilities. The development of a closure strategy and its implementation at a mine site facility are complex and require diversified expertise. At Geosyntec, we work with our mining partners to develop and implement effective and innovative mine closure strategies to support them with meeting their goals of providing positive economic and social transition post-mining.

Solutions for Multifaceted Brownfields Projects: Funding, Site Assessment, and Redevelopment Strategies

Tuesday April 11, 2023, 9 am PT/12 pm ET
Speakers: Amy Dzialowski and Wendy Key, PG, CEM

Municipalities and the private sector are increasingly seeking to redevelop potentially impaired properties to strengthen local economies, rebuild communities, invigorate urban cores, promote sustainable growth, and improve soil and groundwater quality. However, the complicated environmental conditions and economic distress typical of brownfields sites create a higher potential risk for the stakeholders involved in the revitalization process. Creative environmental assessment and redevelopment strategies can reduce liability and overcome persistent environmental and economic hurdles. Several examples will be described in this presentation: (1) grant funding, including identifying sites that are good candidates for grant funding, and the process of obtaining government or community grants to offset redevelopment costs; (2) environmental conditions assessment and management of environmental hazards; and (3) remediating and/or controlling subsurface impacts identified during redevelopment activities. By rethinking environmental solutions throughout the entire brownfields cycle, we can reimagine more sustainable communities as we bring properties back into beneficial reuse.

Protecting our Surface Waters: Proper Assessment Leads to Effective Project Implementation

Tuesday May 9, 2023, 9 am PT/12 pm ET
Speakers: Mike Hardin, Ph.D., P.E. and Mark Ellard, P.E., CFM, D.WRE, ENVSP

Municipalities, water districts, and private interests are investing millions of dollars in implementing various protection and improvement projects geared towards helping our lakes, streams, and estuaries meet their water quality targets and intended use. With such significant investments, it is important that protection and improvement strategies are targeted to the appropriate pollutant sources which are leading to impairments. Misidentified pollutant sources can lead to ineffective recommendations that result in wasted investment. This presentation will discuss various strategies and provide project examples focused on sharing appropriate assessment methods and strategies to target the specific sources of surface water impairment to maximize the benefit received for dollars spent.

More Information

For more information about the events, contact:

  • Rula Deeb, Ph.D., BCEEM, PMP
  • Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Phone: +1 510-932-9110
    About Rula Deeb »
  • Elisabeth Hawley, P.E.
  • Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Phone: +1 510-289-0521
    About Elisabeth Hawley »