CERCLA
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Earth Day 2023–Investing in a Balanced Approach to Emerging Contaminants

In the 1962 book, Silent Spring, Rachel Carson brought to the forefront of public attention contaminants of emerging concern (CECs). CECs, or emerging contaminants, are chemicals or materials that can be characterized by a perceived, potential or real threat to human health or the environment. Continue reading
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To Broaden or Not to Broaden–U.S. EPA Solicits Input on Whether to Add Additional PFAS to CERCLA’s List of Hazardous Substances

As we await final agency action on U.S. EPA’s pending rulemaking to designate perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) as CERCLA hazardous substances, U.S. EPA has just published an advanced notice of proposed rulemaking (ANPR) soliciting public input on whether to add additional PFAS to CERCLA’s list of hazardous substances. When U.S. EPA initially… Continue reading
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Incorporating PFAS in Industrial Wastewater Discharge Permits to Minimize Risk or Extent of Future CERCLA Liability

PFAS are being detected in drinking water systems across the United States. Moreover, evolving regulatory developments already require or soon will require that public water systems sample for and remediate these chemicals (see, e.g., here). Continue reading
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A Risky Dance: When Emerging Contaminants Comingle With CERCLA Hazardous Substances

The distinction between CERCLA hazardous substances and all else, including pollutants or contaminants, is important because CERCLA liability is triggered by the existence of a “hazardous substance” at a site, nothing else. Continue reading
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Jenner & Block Wishes Bon Voyage to Gay Sigel as She Starts Her Next Adventure with the City of Chicago

As Gay Sigel walked through the doors at One IBM Plaza in Chicago, fresh out of law school and ready to launch her career as an attorney at Jenner & Block, she could not have envisioned the tremendous impact she would have on her clients, her colleagues, and her community over the next 39 years. Continue reading
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OMB Throws Potential Speed Bump in Front of U.S. EPA’s Efforts to Designate PFAS as CERCLA Hazardous Substances

On August 12, 2022, the Office of Management and Budget (OMB) completed its review of U.S. EPA’s proposed rule to designate perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) as CERCLA hazardous substances. Continue reading
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U.S. EPA Updates Regional Screening Levels to Add Five New PFAS Chemicals

On May 18, 2022, U.S. EPA updated its Regional Screening Level tables to include five new per- and polyfluoroalkyl substances (PFAS). The five new PFAS compounds added to the RSL tables are hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA – sometimes referred to as GenX chemicals), perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic… Continue reading
CERCLA, Climate Change, Contamination, Emerging Contaminants, Groundwater, RCRA, Sustainability, WaterAgency for Toxic Substances and Disease, ammonium salt, CERCLA, Contamination, Corporate Environmental Lawyer, EPA, GenX chemicals, hexafluoropropylene oxide dimer acid, HFPO-DA, industrial soil, Jenner & Block, perfluorononanoic acid, perfluorooctanesulfonic acid, perfluorooctanoic acid, PFAS, PFHxS, PFNA, PFOA, PFOS, Polyfluoroalkyl, RCRA, Regional Screening Level, remediation, RSL, Steven M. Siros, tap water -
Earth Week Series: The Future of Environmental Regulation

As we near Earth Day 2022, the United States may be headed toward a profound change in the way EPA and similar administrative agencies regulate the complex areas of environmental law. EPA began operating more than 50 years ago in 1970, and has been tasked with promulgating and enforcing some of the most complex regulations… Continue reading
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Earth Week Series: Imagine a Day Without Environmental Lawyers

On this 52nd anniversary of Earth Day, I am not writing yet another, typically not very funny, riff on one of Shakespeare’s most famous lines.[1] Instead, I am inspired by one of the most popular of our blogs, written in 2017 by our talented former partner, E. Lynn Grayson, “Imagine a Day Without Water.” To… Continue reading
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U.S. EPA’s Addition of 1-BP to CERCLA Hazardous Substance List Likely Precursor to Similar Actions on PFAS

On April 8, 2022, U.S. EPA added the industrial solvent 1-bromopropane (1-BP) to its list of CERCLA hazardous substances; this listing was triggered by U.S. EPA’s decision to add 1-BP to the Clean Air Act’s list of hazardous air pollutants in January 2022. Continue reading
