Learn the Issues
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CHIEF Listserv
Once you subscribe to CHIEF you will receive notices of conferences, new EIAG and MPG documents, updates on electronic reporting, and other emission factor and inventory information via e-mail.
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HSRB October 15, 2025
October 15 2025 HSRB meeting materials and registration
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Human Studies Review Board
Information about the Federal advisory committee: the Human Studies Review Board
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Frequent Questions on the Phasedown of Hydrofluorocarbons
FAQ for HFC phasedown program
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EPA RCRA ID: MAD001441054
MAD001441054, GENRAD INC, 41 MAIN ST, Bolton, MA
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TSCA Section 21 Petition Concerning Lead in Paint - Public and Commercial Buildings
This petition requests that EPA promulgate a rule pursuant to TSCA Section 8(d) requiring submission of certain records related to the Occupational Safety and Health Administration’s construction standard for lead.
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TSCA Section 21 Petition to Promulgate Regulations Governing PVCs
This petition requests EPA to promulgate regulations governing the safe treatment, storage and disposal of polyvinyl chloride (PVC), vinyl chloride and associated dialkyl- and alkylarylesters of 1,2-benzenedicarboxylic acid.
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TSCA Section 21 Petition Requesting EPA to Establish a Process to Amend the List of Natural Sources of Oil and Fat
This petition requests EPA to to initiate a rulemaking under TSCA Section 83 that would establish a process to amend the list of natural sources of oil and fat in the “Soap and Detergent Association” (SDA) nomenclature system.
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Petition for Partial Supplemental Waiver of the 2016 Cellulosic Biofuel Volumetric Requirements
January 13, 2017, EPA sent a letter to the American Petrochemical and Fuel Manufacturers (“AFPM”) denying its petition for a partial supplemental waiver of the 2016 cellulosic biofuel standard established under the Renewable Fuel Standard.
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Petition to Promulgate Reporting Rules for Mercury Manufacturing, Processing, and Importation
Section 21 petition to promulgate reporting rules for mercury manufacturing, processing, and importation under section 8(a) of the Toxic Substances Control Act.
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Agriculture Memorandums of Understanding (MOUs)
Agreements between EPA and organizations, or U.S. states can foster collaborative problem solving and strengthen the agriculture community.
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Aprobación De Reautorización Para El Almacenamiento Comercial De Bifenilos Policlorados (PCB) en Emerald Transformer Los Angeles LLC
La Agencia de Protección Ambiental (EPA) de Estados Unidos, oficina de la Región 9, San Francisco, propone volver a autorizar la solicitud para instalación de almacenamiento enviada por Emerald Transformer Los Angeles LLC, ubicada en 5756 Alba Street, LA.
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Re-Authorization Approval for Commercial Storage of PCBs at Emerald Transformer Los Angeles
EPA's Pacific Southwest (Region 9) office proposes to re-authorize the storage facility application submitted by Emerald Transformer Los Angeles LLC, located at 5756 Alba Street, Los Angeles 90058, for the commercial storage of polychlorinated biphenyls (P
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EPA Region 9 Polychlorinated Biphenyls (PCBs) Program
EPA's Pacific Southwest PCB Program regulates processing, distribution, use, cleanup, storage and disposal under the Toxic Substances Control Act (TSCA) in Arizona, California, Hawaii, Nevada and Pacific Territories, providing support for TSCA compliance.
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What’s New in the 2024 Revision to 2 CFR Part 200
Provides an overview of changes to 2 CFR 200 based on the Office of Management and Budget's Uniform Grants Guidance 2024 Update.
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Contact Us: Animal Feeding Operations (AFOs)
Contact information for Animal Feeding Operations programs.
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Contact Us: General Information About NPDES
Overview of regulations and guidance for the hauling and removal of transported hazardous (hauled) waste.
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Communication Resources for Small Drinking Water Systems
These documents explain how to effectively communicate drinking water issues to customers and decision makers.
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EPA Begins Review of the Waste, Inc., Landfill Superfund Site
The U.S. Environmental Protection Agency is conducting a five-year review of the Waste, Inc., Landfill site located at 1701 E. U.S. 12, Michigan City, Indiana and is announcing a 30-day public comment period.
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Emerald Transformer Los Angeles LLC (anteriormente, Clean Harbors Los Angeles)
Emerald Transformer Los Angeles LLC es una instalación de tratamiento, almacenamiento y transferencia de residuos peligrosos comerciales en Vernon, CA. La EPA regula el manejo de residuos de PCB según el permiso de la Ley de Control de Sustancias Tóxicas.