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In Yet Another Decision Restricting EPA Authority, US Supreme Court Holds EPA Cannot Set CWA Permit Limits

The US Supreme Court held in City and County of San Francisco v. EPA that the US Environmental Protection Agency lacks authority under the Clean Water Act to include “end-result” limitations in National Pollutant Discharge...more

EPA Proposes Landmark Stormwater Regulation in Massachusetts

The US Environmental Protection Agency (EPA) has proposed a new draft general stormwater permit that, once finalized, will impose potentially onerous new requirements on more than 4,000 properties in the Charles, Neponset,...more

New EPA Guidance Cuts Prior Residential Soil Lead Levels in Half

The US Environmental Protection Agency (EPA) recently lowered the recommended regional screening level (RSL) and regional removal management level (RML) for lead-contaminated soil in areas where children live and play from...more

EPA Requires Permits for Previously Unregulated Stormwater Discharges in Massachusetts

The US Environmental Protection Agency (EPA) announced on September 14 that it will require new permit coverage for previously unregulated stormwater discharges in Massachusetts. Specifically, EPA intends to issue general...more

EPA Boosts Superfund PFAS Screening, Adds PFAS Chemicals to Lists of Risk-Based Values

The US Environmental Protection Agency announced on May 18 the addition of five per- and polyfluoroalkyl (PFAS) chemicals to its Regional Removal Management Levels and Regional Screening Levels. These additions signal the...more

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