Summary#
This bill changes who does some chemical toxicity assessments at the Environmental Protection Agency (EPA). It moves certain chronic human-health hazard and dose-response assessments away from the IRIS program and into the EPA program offices that handle air, water, land, and chemicals. The bill also requires common scientific standards, a central database for toxicity values, a steering committee to avoid duplicated work, and regular certifications that the standards were used.
- Main change: Covered chemical hazard and dose-response assessments are to be done by the relevant EPA program office instead of being done through the IRIS program, when the program office determines an assessment is needed.
- Scientific rules: Assessments must follow the bill’s scientific standards (best available science, weight of evidence, documentation, peer review, uncertainty analysis, reproducibility, and consideration of non-linear dose-response models).
- Toxicity values: Program offices must assign toxicity values when supported by the data. Those values should include ranges, multiple point estimates when appropriate, and documented uncertainties.
- Central database: The Office of Research and Development (ORD) must keep a chemical assessment database. Existing IRIS assessments are kept there.
- Coordination and oversight: A steering committee made up of EPA employees will coordinate assessments to prevent duplicate work and may consider third-party assessments that meet the bill’s standards.
- Certification: Every two years ORD must certify to specified congressional committees that covered assessments used the required scientific standards.
What it means for you#
- EPA program offices (Office of Water; Office of Air and Radiation; Office of Land and Emergency Management; Office of Chemical Safety and Pollution Prevention): They will have primary responsibility for doing covered chemical hazard and dose-response assessments when they decide one is needed. They must follow the bill’s scientific standards and record toxicity values in the central database.
- Office of Research and Development: Must maintain the chemical assessment database, retain existing IRIS assessments there, and send a certification every two years that assessments met the standards. The ORD Assistant Administrator chairs the new steering committee.
- IRIS program staff: Existing IRIS assessments are moved into the new database, and future covered assessments will be done by program offices rather than through IRIS.
- Federal, state, and international agencies and scientific community: Their third-party assessments can be considered to supplement EPA assessments only if those assessments meet the bill’s scientific and review requirements.
- Businesses and regulated entities: Over time, the source of toxicity values used in permitting, standards, or risk decisions could come from different EPA program offices rather than from IRIS. This could change the form or presentation of toxicity estimates used in regulation.
- General public and public-health bodies: The bill aims to make toxicity values include ranges and uncertainty information and to make documentation publicly available where permitted by confidentiality rules.
Expenses#
No publicly available information.
- The bill will create administrative work for EPA: maintaining and updating the central database; staffing and operating the steering committee; producing biennial certifications; and performing or coordinating additional assessments.
- These actions would likely require staff time, IT or database support, and resources for peer review and public documentation. The bill text does not provide a dollar estimate or a formal fiscal note.
Proponents' View#
- The bill appears intended to make chemical assessments more directly linked to the EPA program offices that use them for regulatory decisions.
- It could be seen as promoting coordination between program offices to avoid duplicated effort.
- Requiring documentation of uncertainty, multiple point estimates, and ranges of risk could be seen as increasing transparency about scientific uncertainty.
- The rules for considering third-party assessments could allow EPA to use high-quality work done by other agencies or the scientific community.
- The scientific standards emphasize reproducibility, peer review, and the best available science, which supporters may argue improves assessment quality.
Opponents' View#
- One concern is that shifting assessments out of a centralized program like IRIS could lead to inconsistent methods or results across different EPA program offices.
- The bill does not fully explain how disputes between offices will be resolved when more than one office has interest in the same chemical.
- The steering committee is composed only of EPA employees; the bill does not require external members, which may limit outside oversight or input.
- The bill requires that third-party assessments have independent review but does not define the standards or process for that review.
- It is unclear how the phrase “best available science” and several other broad terms will be interpreted in practice, which could lead to variation in how standards are applied.
- The bill creates administrative tasks (database maintenance, certifications, coordination) but gives no cost estimate or funding plan.