PFAS or “per-and polyfluoryoalkyl substances” are a class of compounds (several thousand) that contain a chain of carbon and fluorine in their structure. PFAS have been used globally for over 60 years, and are still being used because of their many useful properties – they are chemically inert; resistant to [...]
On March 29, 2023, the U.S. EPA published the proposed PFAS Drinking Water Regulations in the Federal Register. This proposed rule for Per- and Polyfluoroalkyl Substances (PFAS) includes Maximum Contaminant Levels (MCLs) of 4.0 ng/L for two PFAS constituents (PFOA and PFOS), and an MCL using a Hazard Index of [...]
ProUCL is a statistical software package developed by the USEPA using many of the concepts found in the RCRA Unified Guidance. Originally developed to evaluate concerns at a specific Superfund site, the USEPA has, after considerable feedback from the remediation community, continued to update the software with additional features and [...]
Are you considering purchasing a commercial or industrial property that may have environmental contamination? It is critical to consult with a qualified team that can provide you with a full evaluation of risks that typically accompany the purchase and redevelopment or reuse of the contaminated property. Learning the difference between [...]
ProUCL, a statistical software package developed by the USEPA, is a very powerful tool for evaluating environmental datasets. This webinar will discuss the applicability of ProUCL to environmental datasets, including its use in establishing background levels, determining exposure point concentrations, evaluating trends in monitoring well datasets over time, determining outliers [...]
What do non-stick coated pans, waterproof fabrics, oil-resistant food packaging, stain-resistant materials, and fire-fighting foam all have in common? They all potentially contain fluorinated compounds, and more specifically, are made with a suite of specialty chemicals called Perfluorooctanesulfonic acid (PFOS) and Perfluorooctanoic acid (PFOAs). PFOS and PFOAs both are fluorinated [...]
The purpose of the Spill Prevention, Control and Countermeasure (SPCC) rule is to prevent discharge of oil into navigable waters of the U.S. or adjoining shorelines as opposed to response and cleanup after a spill has occurred. This webinar will discuss the applicability to the SPCC rule, certification requirements for [...]
The EPA identified asbestos as a hazardous air pollutant back in March of 1971. Following its designation, the EPA published the Asbestos National Emission Standard for Hazardous Air Pollutants (NESHAP) in April of 1973. This means the NESHAP regulation has been in effect for the past 40+ years and yet [...]
The EPA identified asbestos as a hazardous air pollutant back in March of 1971. Following its designation, the EPA published the Asbestos National Emission Standard for Hazardous Air Pollutants (NESHAP) in April of 1973. This means the NESHAP regulation has been in effect for the past 40+ years and yet [...]
Toxicological studies have shown that elevated exposure to PFAS can potentially result in liver, endocrine, immunological, and reproductive effects, as well as cancer. In the last three years, over a dozen states have issued guidance and/or screening levels for PFAS in groundwater and/or soils, and the U.S. EPA has developed [...]
