Tungsten (represented on the periodic table as “W”) is a naturally occurring element that exists in the environment as minerals with the two most common minerals being Wolframite and Scheelite. Due to tungsten's unique properties, such as its remarkable tensile strength, conductivity, and melting point, it can be found in [...]
What are the nuances of the Resource Conservation and Recovery Act (RCRA)? It was approved by Congress on October 21, 1976, or about six years after EPA was formed. RCRA was an amendment to the Solid Waste Disposal Act 0f 1965, note five years before EPA was formed. RCRA was [...]
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 [...]
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 [...]
PFAS or Per- and Polyfluoroalkyl Substances, have been around since the 1940s and are used in a wide-range of industrial and commercial applications and consumer products. Toxicological studies have shown that exposure to PFAS can potentially result in liver, endocrine, immunological, and reproductive effects, as well as cancer. The U.S. [...]
The purpose of the Spill Prevention, Control and Countermeasure (SPCC) rule, promulgated under 40 CFR 112, is to prevent discharge of oil into navigable waters of the U.S. or adjoining shore lines. In order to better understand the SPCC rule, below are some of the fundamentals of the SPCC rule [...]
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 [...]
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 [...]
Cleaning up contaminated properties can take a long time at great expense. In most cases, conducting a completely “clean” cleanup is not always feasible and can be cost-prohibitive. As a result, risk-based closures are becoming more common, which means residual contamination remains behind and environmental restrictions are applied to the [...]
