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  • How do the different parts of particulate matter (PM) fit together?

    The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…

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  • How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?

    Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…

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  • Obtaining an RMP ID Number

    How can a facility subject to the Risk Management Plan (RMP) requirements obtain its RMP ID number? The owner or operator of a regulated RMP facility that has already submitted an RMP, may obtain the facility's identification number (RMP ID Number) by contacting the RMP Reporting Center (703-227-7650). An RMP-covered…

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  • Does EPA have enforcement authority for the risk management program regulations?

    Yes. Under §113 of the CAA, the Agency has the authority to bring administrative and judicial actions against violators. Judicial actions can be civil and criminal in nature. Section 113(a)(3) authorizes the Agency to order violators to comply with the risk management program regulations. Under section 113(b), the Agency may…

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  • Criteria for selecting stationary sources to audit

    What criteria will be used to select stationary sources for periodic compliance audits of risk management plans (RMPs) submitted under 40 CFR Part 68, Subpart G? The implementing agency will, according to the regulations at 40 CFR §68.220(b), select stationary sources for audits based on any of the following criteria…

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  • Is there a citizen suit provision applicable to RMP?

    Is there a citizen suit provision applicable to CAA §112 and the risk management program rule? Yes, section 304 of the CAA includes a citizen suit provision for violations of emission standards or limitations promulgated under the Act.

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  • Accessing RMP Data

    Is Risk Management Plan (RMP) data available to the public and, if so, where can it be found? Risk Management Plans (RMPs) prepared and submitted pursuant to CAA section 112(r) are, by statute, available to the public. Members of the general public may obtain RMP data by visiting a designated…

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  • How may state and local rules be more stringent?

    In what ways may state and local rules be more stringent? Does this document ( General Risk Management Program Guidance ) provide guidance on state and local differences? States and localities may impose more detailed requirements, such as requiring more documentation or more frequent reporting, specifying hours of training or…

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  • How can residents communicate with EPA about activities at the Norwood Landfill site?

    This EPA website ( www.epa.gov/norwood ) is dedicated to the investigations in the Norwood community. We encourage you to use the site and submit any questions you might have through the form that appears on the website. We also welcome any feedback you might have on the webpage.

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  • Where can residents get the most accurate and up-to-date information on the Norwood Landfill site?

    The www.epa.gov/norwood website is the site with the most accurate and up-to-date information regarding EPA’s investigations in the Norwood community.

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  • Statutory authority and regulatory source for the risk management program

    What is the statutory authority and the regulatory source for the risk management program regulations that are codified in 40 CFR Part 68? The risk management program regulations were promulgated pursuant to the §112(r) accidental release prevention provisions of the Clean Air Act, as amended in 1990. The regulatory sources…

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  • RMP Information Center

    If I have additional questions regarding the RMP regulations, who can I contact via telephone for further assistance? You may contact the EPCRA, RMP & Oil Information Center, a publicly accessible service that provides up-to-date information on the regulatory requirements of the RMP program, including the applicability, program levels, off-site…

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  • Vulnerable Zone Determination

    Vulnerable zones are areas that could be affected by a release from a chemical accident at a facility subject to the risk management program requirements in 40 CFR Part 68. How can one determine if they live or work within a vulnerable zone? The Vulnerable Zone Indicator System (VZIS) allows…

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  • What is included in the emissions “Tiers”?

    The Tiers are assigned by a Source Classification Code (SCC), which has the most detail about the emissions processes that generate the emissions. The full list of SCCs, their associated Tiers, and the SCC descriptions is available online at https://ofmpub.epa.gov/sccwebservices/sccsearch/ .

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  • Differences between the risk management program and EPCRA

    How do the Clean Air Act (CAA) risk management program requirements differ from the hazardous chemical reporting requirements under the Emergency Planning and Community Right-to-Know Act (EPCRA)? The hazardous chemical reporting requirements under EPCRA §§311 and 312 (40 CFR Part 370) are separate and distinct from those under CAA §112(r)…

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