Learn the Issues
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Would pesticide sprayed on ground count towards §302 threshold?
Section 302 requires owners and operators of facilities that have extremely hazardous substances (EHSs) present above the threshold planning quantity (TPQ) to participate in emergency planning ( 40 CFR §355.20). If a facility has a pesticide sprayed on its grounds without first being stored at the facility, must the amount…
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Consumer product exemption and products that require licensing
Pennsylvania restricts the use of a product that is packaged for distribution and use by the general public by requiring users within the State to obtain a license. This product requires a material safety data sheet under OSHA, and thus may be subject to the reporting requirements of EPCRA Sections…
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Threshold planning quantity for extremely hazardous substances in solid form
Extremely hazardous substances (EHSs) that are in solid form are subject to one of two different threshold planning quantities (TPQs), a lower level or 10,000 pounds ( 40 CFR 355.15). Why does the list of EHSs only have one TPQ for certain solids, such as sodium cyanide? If a facility…
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Reportable quantity calculations for chemicals in abandoned containers
Must any amount of a listed chemical contained within abandoned or discarded barrels, containers, or other receptacles be considered to determine if a specific reportable quantity has been exceeded under EPCRA Section 304 notification requirements? 40 CFR §355.61 (April 22, 1987, 52 FR 13395) defines a release as "any spilling…
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Spills onto concrete floors inside a building
A facility has a spill of an extremely hazardous substance in an amount greater than its reportable quantity. The spill occurs on a concrete floor that is inside a facility building. Before the spill can be cleaned up, a portion (less than RQ) of the EHS enters the outside atmosphere…
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Releases of wastes not individually listed as CERCLA hazardous substances
Can releases of wastes that are not individually listed as CERCLA hazardous substances still be subject to CERCLA reporting requirements? Yes. CERCLA reporting requirements apply not only to all of the substances individually listed in 40 CFR 302.4, but also to wastes or waste streams exhibiting the characteristics of ignitability…
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Releases from animal waste to non-air environmental media
On June 13, 2019, EPA published a Final Rule adding an exemption to the release reporting requirements of EPCRA Section 304 ( 40 CFR Part 355) for substances from animal waste being emitted into the air ( 84 FR 27533). Does this exemption also apply to substances from animal waste…
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Reporting by mixture or components for a mixture with unknown chemicals
A facility is storing a product mixture on-site. Under OSHA regulations, the facility is required to retain a material safety data sheet (MSDS) for the mixture. According to the MSDS, the mixture contains a zinc compound, but no specific chemical identity or concentration information is provided. OSHA regulations allow chemical…
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What facilities are exempt from Section 304 notification requirements?
A facility itself can only be exempted if there are no hazardous chemicals present at the facility. The term "hazardous chemical," as defined under Section 311 of Title III, includes any substance which constitutes a physical or health hazard. This broad definition is borrowed from the Occupational Safety Health Act…
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Chemours Pompton Lakes Works Site Additional Documents
This page contains DuPont/Pompton Lakes Documents.
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Calculating EHS quantities within landfills
How are the quantities of the extremely hazardous substances (EHSs) to be calculated in determining if landfills are subject to the section 302 requirements? EPA realizes the practical problems presented for landfills in complying with the Title III requirements. Owners of these facilities must determine, based on reasonably available information…
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Previous Air Toxics Assessments
Listing of air toxics assessments conducted in prior years
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为英语水平有限者提供援助
Simplified Chinese translation of web page on "Assisting individuals with Limited English Proficiency
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Nitrogen Dioxide (NO2) Pollution
Information on setting and implementing the primary outdoor air quality standard for nitrogen dioxide.
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Particle Pollution and Your Patients' Health
This web area will offer health care providers a broad base of information on the exposure and health effects of fine particle pollution.
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Tribal Policy Documents
Tribal Policy Document for NAAQS Designations
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Enforcement and Compliance Assurance Annual Results for FY 2025: Federal Facilities
2025 enforcement and compliance annual results
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Enforcement and Compliance Assurance Annual Results for FY 2025: Superfund Cleanup Enforcement
2025 enforcement and compliance annual results
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Enforcement and Compliance Assurance Annual Results for FY 2025: Criminal Enforcement
2025 enforcement and compliance annual results
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Superfund Accomplishments and Benefits
Learn about Superfund program highlights, including annual accomplishments, performance measures, community benefits, and the Human Exposure Dashboard.