Laws & Regulations

Innovative TMDLs using Impervious Cover

Three states in EPA Region 1 have developed TMDLs using impervious cover and flow as surrogates for stormwater-source pollutants in streams listed for biological impairment.

National Association of Counties "Stormwater Runoff for Counties" Webinar

Presentations and a transcript of a "Stormwater Runoff for Counties" webinar.

Fact Sheet: Minnesota Statewide Mercury TMDL

The factsheet documents the Minnesota Statewide Mercury TMDL.

Evaluation of Sediment Transport Data for Clean Sediment TMDLs

The report evaluates sediment transport data for clean sediment TMDLs.

Rio Hondo TMDL

The document details the nutrients, turbidity and dissolved oxygen TMDL for Rio Hondo.

Middle Rio Grande Watershed TMDL

The document details the bacteria and aluminum TMDL for the Middle Rio Grande Watershed.

Lake Thunderbird TMDL

The document details the nutrients, turbidity and dissolved oxygen TMDL for Lake Thunderbird.

TMDL Model Evaluation and Research Needs (2005)

The document provides a comprehensive review of available models for developing TMDLs.

PRN 96-1: Tolerance Enforcement Methods - Independent Laboratory Validation by Petitioner

This notice is intended to clarify the requirements for submission of an Independent Laboratory Validation to accompany new pesticide analytical methods and does not contain additional data requirements.This notice supersedes PR Notice 88-5.

PRN 94-9: Announcing the Formation of Two Industry-Wide Task Forces: Agricultural Reentry Task Force and Outdoor Residential Exposure Task Force

This Notice announces two industry-wide Task Forces being formed in response to generic exposure data requirements. It contains EPA's policy on a registrant's options for, and responsibilities when joining Task Force as a way to satisfy data requirements.

PRN 96-3: Pesticide Products Used to Disinsect Aircraft

This Notice specifies labeling changes for any pesticide product (insecticide) used for disinsecting aircraft. EPA required these changes based on incident information associated with the use of insecticide spray products occupied aircraft cabins.

PRN 94-5: Requests for Re-considerations of Carcinogenicity Peer Review Decisions Based on Changes in Pathology Diagnoses

This notice sets forth a procedure to be followed for submission of pathology re-reads to the Agency.

PRN Notice 94-4: Interim Measures for the Registration of Antimicrobial Products/Liquid Chemical Germicides with Medical Device Use Claims Under the Memorandum of Understanding Between EPA and FDA

This Notice is intended to provide the regulated community with detailed guidance on the interim EPA registration procedures for antimicrobial products affected by the June 4, 1993, Memorandum of Understanding (MOU) between EPA and FDA.

PRN 94-7: Label Improvement Program for the Revision of Use Directions for Commensal Rodenticides and Statement of the Agency's Policies on the Use of Rodenticide Bait Stations

This Notice requires registrants of certain pesticide products claimed to control commensal rodents and registered under FIFRA to revise the labeling of such products to bear certain statements concerning "tamper-resistant bait stations."

PRN 94-6: Pesticide Products Registered for Use on Humans to Control Lice (Pediculicides)

This notice alerts pesticide registrants to a rule issued by Food and Drug Administration (FDA) under the Federal Food, Drug and Cosmetic Act (FFDCA) establishing conditions for safe and effective use of pediculicide drug products.

PRN 94-8: Water Soluble Packaging (WSP)

This notice describes the registration requirements for pesticide products containing water soluble packaging (WSP).

PRN 97-3: Guidelines for Expedited Review of Conventional Pesticides under the Reduced-Risk Initiative and for Biological Pesticides

EPA encourages the development, registration and use of lower-risk pesticide products which would result in reduced risks to human health and the environment. This Pesticide Registration notice and the related web page explain the process and criteria.

PRN 95-3: Reduction of Worker protection Standard (WPS) Interim Restricted Entry Intervals (REIS) for Certain Low Risk Pesticides

On January 11, 1995, EPA published a draft policy on "Reduced Restricted Entry Intervals for Certain Pesticides," in the Federal Register. The final policy was published in the Federal Register on May 3, 1995. This Notice contains the final policy.

PRN 96-8: Toxicologically Significant Levels of Pesticide Active Ingredients

This notice sets out EPA's interpretation of the term "toxicologically significant" as it applies to contaminants in pesticide products that are also pesticide active ingredients. It provides risk-based concentration levels of such contaminants.

PRN 97-8: Time Extension of PR Notice 96-7 - Termiticide Labeling

EPA intends to grant a 90-day extension to permit the distribution or sale of products not bearing labeling consistent with PR Notice 96-7. View the reasons for this extension and what products are affected.