Author: Chelsea Meddings, Project Scientist As you may know, in 2018, the California State Water Resources Control Board amended the National Pollutant Discharge Elimination System (NPDES) Stormwater Industrial General Permit (IGP) Order 2014-0057-DWQ, with new regulations becoming effective in July 2020. Now moving into 2022, our industrial stormwater professionals would like to help support facilities that have found these regulations challenging. If your facility is out of compliance with the IGP regulations, or if you require support interpreting these regulations, we hope this information will be valuable in helping you successfully navigate the changes. What’s Changed in the Statewide Industrial Stormwater General Permit? The 2018 IGP amendment redefined analytical methods required for annual stormwater sampling. Analytical methods are now required Read More »
Posts Categorized: Blog
Background: The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), also known as the “Superfund”, was established by the federal government to authorize the Environmental Protection Agency (EPA) to respond to human health and environmental hazards posed by hazardous substances released into the environment. Under CERCLA, the EPA can hold the responsible party(s) liable for cleanup or can conduct the cleanup and require costs to be supplied by the responsible party(s). AAI Rule: The All Appropriate Inquiries (AAI) Rule in 40 CFR, Part 312, established by the EPA, is the process of evaluating a property’s environmental conditions and assessing potential liability for any contamination. The American Society for Testing and Materials (ASTM) published the E1527 “Standard Practice for Environmental Site Read More »
The coronavirus outbreak brought heightened awareness to the importance of indoor air quality (IAQ) in the workplace. However, the concern for people’s well-being in buildings such as office spaces and schools existed long before the pandemic. These types of buildings are home to a variety of potential air contamination sources, including volatile organic compounds (from cleaning agents, furniture, carpets, etc.), bacteria, mold, and viruses. Proper building management is essential when considering the safety of its occupants and potential health risk sources are abundant. Outlined below we have detailed why healthy indoor air quality is so important, how you can identify it, and what to do to prevent or mitigate it. What Happens When You have Poor Indoor Air Quality? According Read More »
In late 2020, Broadbent was solicited to submit a proposal to conduct seeps and springs monitoring activities at a mine site in northeastern Nevada. In early 2021, Broadbent was awarded the annual contract, which included use of a helicopter over the course of multiple days to access some of the remote seeps and springs sites. Specific field work included utilizing the helicopter to access twelve sites within the two-mile groundwater drawdown boundary, four deep water sources outside the two-mile groundwater drawn down buffer, and seven locations where vegetation transects were conducted.
What is PFAS? Per- and polyfluoroalkyl substances (PFAS) are a general term applied to thousands of chemicals manufactured since the 1940’s and can be found in food packaging (microwave popcorn bags, pizza boxes, etc.), stain and water-resistant fabrics, non-stick products, fire-fighting foams, and many other consumer and manufacturing products. They have been widely used for many decades because of their unique surfactant and oil/water repelling qualities. When sampling for PFAS there are several things to consider to help avoid cross-contamination. Why Should We Care About PFAS? PFAS are considered an emerging chemical of concern and have been classified as “Forever Chemicals” because they do not easily break down in the environment. PFAS also bioaccumulate in the food chain and can Read More »