Posts by Sadie MapstoneAssociateAs an associate in the firm’s environmental practice group, Sadie counsels clients on a broad range of issues, such as sustainability, supply chain management, and natural resources. Her experience includes research and ...
6 Minute Read
October 24, 2025
On October 2, EPA published the proposed effluent limitations guidelines (ELG) Deadline Extension Rule for the steam electric power generating industry, to revise a series of provisions from the 2024 ELG rule.
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- Settlements
- Sewage
- Shareholder Lawsuits
- Shutdown
- Sierra Club
- Significant Figures
- Significant Guidance
- Significant New Use Rule
- SIP
- Smelter
- SNUR
- Social
- Social Media
- Solar
- Solid Waste
- South China Sea
- South Coast Air Quality Management District
- SPCC
- Species
- Spill Prevention Control and Countermeasure Rule
- SSB 5135
- SSM SIP Call
- Stabilization Clause
- Standing
- Standing Rock Sioux
- Stare Decisis
- State
- State Administrative Appeals
- State Air Pollution Control Board
- State Constitutions
- State Environmental Quality Review Act
- State Implementation Plan
- State Law
- State Water Resources Control Board
- States
- Statute
- Statute of Limitations
- Statutory Authority
- Statutory Interpretation
- Stormwater
- Strategic
- Straw Proposal
- Subrogation
- sulfur dioxide
- Sunset Review
- Superfund
- Supplemental Environmental Projects
- Supply Chain
- Supreme Court
- Supreme Court of Texas
- Supreme Court of the United States
- Surface Mining Act
- Surface Mining and Reclamation Act
- Surface Water Discharge
- Susan Bodine
- Sustainability
- Sustainability Accounting Standards Board
- Sustainable Development Goals
- Sustainable Investing
- SWDA
- Switzerland
- SWRCB
- Tailings Storage Facility
- Take
- Take Prohibition
- Takings
- Task Force on Climate-Related Financial Disclosures (TCFD)
- Tax
- Tax Credit
- Tax Credits
- Tax Cuts and Jobs Act
- Tax Reform
- Taxonomy Regulation
- TCEQ
- TCI
- Temporary Policy
- TERP
- Texas
- Texas Alliance of Energy Producers
- Texas Commission on Environmental Quality
- Texas Legislature
- Texas Railroad Commission
- Texas Water Development Board
- Thailand
- THC
- The European Commission
- The Mikado
- The Treasury Department
- The Water Infrastructure Improvements Act
- the WIIN Act
- Third Circuit
- Threatened Species
- Title V
- TMDL
- TMDLs
- TNALs
- Toledo
- Tolling Order
- Total Maximum Daily Load
- Toxic Chemicals
- Toxic Substances Control Act
- Toxic Substances Control Act (TSCA)
- Toxics
- Toxics Release Inventory
- Transcos
- Transition
- Transmission
- Transparency
- Transport
- Treasury
- Treaty Rights
- Trends
- TRI
- Tribal Rights
- Tribes
- Trump
- Trump Administration
- TSA
- TSCA
- TSF
- TWDB
- U.S. Army Corps of Engineers
- U.S. Environmental Protection Agency
- Ultimate Net Loss
- UNCLOS
- Underground Injection Wells
- Underground Storage Tank
- UNFCCC
- Unified Agenda
- United Airlines
- United Nations
- United Nations Framework Convention on Climate Change
- Urgenda
- US Army Corps of Engineers
- US Chemical Safety Board
- US Climate Alliance
- US Court of Appeals for the Ninth Circuit
- US Customs and Border Protection
- US Department of Agriculture
- US Department of Justice (DOJ)
- US Environmental Protection Agency
- US Fish and Wildlife Service
- US FWS
- US SAFETY Act
- US Securities and Exchange Commission
- US Securities and Exchange Commission (SEC)
- US Supreme Court
- USACE
- USDA
- USDOT
- USFWS
- USMCA
- Utilities
- Utility
- Vapor Intrusion
- Vapor Recovery Units
- VCP
- Venting
- Veto
- Village of Old Mill Creek. v. Star
- Vineyard Wind
- Virginia Clean Economy Act
- Virginia Community Flood Preparedness Fund
- Virginia Department of Environmental Quality
- Virginia State Corporation Commission
- Vision of Corporation Finance
- VOCs
- Volatile Organic Compounds
- Voluntary Cleanup Program
- Voluntary Remediation
- Waiver
- Waiver Period
- Warnings
- Washington
- Waste
- Waste Discharge Identification Number
- Waste Electrical and Electric Equipment
- Waste Permitting
- Wasted Food
- Wastewater
- Wastewater Treatment
- Water
- Water Quality Certification
- Water Quality Criteria
- Water Regulation
- Water Reuse
- Water Supply and Management
- Water Systems
- Waterfront
- Waters
- Waters of the United States
- WDID
- WEA
- WEEE
- Well Blowout
- Well Control Rule
- WET Tests
- Wetlands
- Whole Effluent Testing
- Wholesale Electricity
- WildEarth Guardians
- Wildfire
- Wind
- Wind Energy
- Wind Energy Area
- Wind Farms
- Winning on Reducing Food Waste Initiative
- Winter v. NRDC
- Withdrawal or Reinstatement
- World Bank Group Equator Principles
- Worst-Case Discharge
- WOTUS
- WQBELs
- WQC
- Wyoming
- Zero Emissions
- Zero-Emissions Vehicle Initiative
- Zinke
Authors
- Yaniel Abreu
- Walter J. Andrews
- Fatima Anjum
- John J. Beardsworth, Jr.
- Jordan L. Bernstein
- Timothy E. Biller
- John R. Bobka
- George Borovas
- Lawrence J. Bracken II
- Shannon S. Broome
- Karma B. Brown
- Samuel L. Brown
- F. William Brownell
- Courtney Cochran Butler
- E. Carter Chandler Clements
- Abigail Contreras
- Benjamin Y. Cooper IV
- William Cox
- Eric S. Crusius
- Christopher J. Cunio
- Alexandra B. Cunningham
- Field Daniel
- Andrea DeField
- Meredith Doswell
- Douglas L. Dua
- Deidre G. Duncan
- Chloe Dupre
- Frederick R. Eames
- Kevin S. Elliker
- Clare Ellis
- Latosha M. Ellis
- Joanna D. Enns
- Susan S. Failla
- Geoffrey B. Fehling
- Andrea Field
- Hannah Flint
- Steven C. Friend
- Kevin E. Gaunt
- Andrew G. Geyer
- Sevren R. Gourley
- Elisabeth R. Gunther
- Steven M. Haas
- Alexandra Hamilton
- James W. Head
- Patrick Jamieson
- Kevin W. Jones
- Laura Ellen Jones
- Dan J. Jordanger
- Ryan T. Ketchum
- Jonathan H. Kim
- Scott H. Kimpel
- Charles H. Knauss
- J. Pierce Lamberson
- Lucinda Minton Langworthy
- Charlotte Leszinske
- Brian R. Levey
- Michael S. Levine
- Elbert Lin
- Eric R. Link
- Nash E. Long
- David S. Lowman, Jr.
- Sadie Mapstone
- James Martin
- Jeffrey N. Martin
- Lorelie S. Masters
- Patrick M. McDermott
- Kerry L. McGrath
- Robert J. McNamara
- Nathan R. Menard
- Michael J. Messonnier, Jr.
- Todd S. Mikolop
- Angela Morrison
- Michael J. Mueller
- Eric J. Murdock
- Ted J. Murphy
- William L. Newton
- Paul T. Nyffeler, PhD
- Peter K. O’Brien
- G. Michael O’Leary
- Evangeline C. Paschal
- Kate Perkins
- Shemin V. Proctor
- Shawn Patrick Regan
- Myles F. Reynolds
- Doris Rodríguez
- Brent A. Rosser
- Rachel Saltzman
- Arthur E. Schmalz
- Penny A. Shamblin
- Michael R. Shebelskie
- George P. Sibley, III
- Joseph C. Stanko
- Martin P. Stratte
- Javaneh S. Tarter
- Thomas W. Taylor
- David Arthur Terry
- Linda Trees
- Andrew J. Turner
- Emily Burkhardt Vicente
- Carl von Merz
- Ayesha K. Waheed
- Gregory R. Wall
- Daniel C. Warren
- Thomas R. Waskom
- Malcolm C. Weiss
- Susan F. Wiltsie