The GPro talk series is a weekly webinar allowing attendees to learn about specific topics related to environmental sciences. Each talk is lead by our senior specialists who’ve spent years in the field gathering experience and knowledge.
Make sure you sign up for the webinars, even if you can’t attend the live sessions, the replays are online for 48 hours post webinar!
GeoEnviroPro Talks will be held every Wednesday at 10 am PST. The topics will be announced a week in advance. We have combined experience with every aspect of practice – from the excavator to the courtroom – and have been involved throughout the evolution of the contaminated field science and regulations in BC. Now distilled freely into 30 minute chunks. These sessions are FREE!
After 35+ years of site investigations and cleanup, we’ve seen a few things out there…and it’s time to share!!
Per- and Polyfluoroalkyl Substance Dark Matter: Role of Total Organofluorine Analysiskeyboard_arrow_down
Significant effort continues in delineating the extent of Per- and Polyfluoroalkyl Substance (PFAS) contamination and recent advances in remedial approaches hold promise. However, the extent of remedial effort required for many of these sites remains unknown. This is due to the presence of large PFAS precursor compounds and other unknown or uncharacterized PFAS, which are not included as part of the suite of PFASs routinely monitored, but will add to the risk burden of a site in terms of both ecological and human health risks and remedial cost estimates. The challenge in accounting for this pool of undetermined PFAS can be significant as its nature and quantity are generally unknown (the Dark Matter). This presentation will describe our efforts in developing technologies to determine the magnitude of total PFAS including the Dark Matter, reported as total organofluorine (TOF) in environmental matrices such as soil, water and biota.
Jana McLean, principal of Iris Legal, will provide an update on recent jurisprudence in the area of contaminated sites. Jana is a leading practioner in the area, recognized nationally for both her environmental and Aboriginal law practice.
Morgan Cunningham and Elissa Liu from Environment and Climate Change Canada will be presenting on the reptile ecological risk assessment project that is being developed. Toxicity information on reptiles is currently limited and not easily accessible, which presents difficulties for risk assessors to assess reptiles at contaminated sites. Although the primary literature may offer sufficient information on toxicity to reptiles, the data has not been summarized to offer easily accessible information that illustrate what contaminant concentrations might represent a risk to reptiles. The approach to the reptile project is very similar to the now published amphibian ecological risk assessment guidance document. The first step of this project is to compile toxicity data from published studies to construct concentration-response profiles. In the future, there is the intention to consolidate other available resources for reptile effect assessment. The project is in the preliminary stages and the goal of this presentation is to provide an overview of the project and also obtain feedback from participants.
Elissa Liu & Morgan CunninghamAccess
Vapor intrusion (VI) characterization efforts can be challenging due to complexities associated with background indoor air contaminants, preferential subsurface migration pathways, and vapor migration dynamics causing temporal and spatial variability in gas concentrations. Additionally, traditional investigation approaches can result in data quality issues, wasted resources, inaccurate or incomplete Conceptual Site Models, and under- or over-estimated risk. To address these challenges, continuous monitoring and automated remote Cloud based reporting platforms have been developed to quantify real-time vapor concentrations of key volatile constituents accurately, precisely, and at low-detection limits. This presentation will include a few examples where key VI questions were rapidly resolved through automated continuous monitoring and response.
Blayne Hartman, Ph.D.Access
Henry McQueen is a Senior Development Manager at Concert Properties located in Vancouver, BC. As a former employee of the City of Toronto and a Registered Professional Planner, Henry brings public and private sector experience to the development of award-winning communities across British Columbia and Ontario. Focused on delivering complete communities, integrated sustainable building design and programming, Henry will share his experience in managing the design and development of brownfield sites and transforming them into thriving master planned communities.