Learn the Issues

What is a Jurisdictional Delineation under CWA Section 404?

Information on how to do a wetlands delineation

How are WaterSense Specifications Developed?

This page describes the factors WaterSense considers in making the decision to develop a specification for a product category, the process, and data needs that help the program make decisions.

Grand Rapids Vapor Intrusion Maps

Maps of vapor intrusion sites in Grand Rapids

Quality Management Plan for EPA Region 6

Defines the planning and oversight activities that are in place relating to data collection activities conducted in Region 6

Certified Professionals in Action

Irrigation professionals certified by WaterSense labeled certifying organizations are trained in water-efficient practices. Learn more about how professionals are helping customers save water with better irrigation practices.

EPCRA 311 / 312 Applicability to Brine / Salt Solutions

Are facilities required to prepare or have available a material safety data sheet/safety data sheet (MSDS/SDS) for brine/salt solutions under the Occupational Safety and Health Administration (OSHA) Hazard Communication Standard (HCS) ( 29 CFR 1910.1200)? Yes, facilities are required to prepare or have available an MSDS/SDS for brine/salt solutions under…

Last published: May 11, 2026

Notification Requirements for Refrigerant Release to Air

If a facility has a release of a refrigerant into the air, are there any regulatory requirements to notify EPA or other government agencies? Pursuant to the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 304, a facility that has a release of an extremely hazardous substance (EHS) or a…

Last published: May 11, 2026

No Supplier Notification Requirements for Tier II Chemical Inventory Reporting

Under EPCRA Section 313, suppliers are required to notify customers that their mixtures or trade name products contain a TRI chemical. Are there similar supplier notification requirements for Tier II chemical inventory reporting under EPCRA Section 312? There is no supplier notification requirement for Tier II chemical inventory reporting. However…

Last published: May 11, 2026

Applicability of EPCRA 311 Exemptions To Extremely Hazardous Substances

The definition of a hazardous chemical under EPCRA Section 311 outlines exempted chemicals that are therefore not subject to material safety data sheet (MSDS) reporting or Tier II chemical inventory reporting. Do the exemptions from the definition of hazardous chemical also apply to extremely hazardous substances (EHSs)? EHSs are a…

Last published: May 11, 2026

Definition of Ambient Temperature for EPCRA 312 Reporting

The Tier II Hazardous Chemical Inventory form, used to meet annual EPCRA section 312 reporting requirements, requires facility owners or operators to note whether reported hazardous chemicals are present at, above, or below ambient temperature. What is meant by ambient temperature? Ambient temperature means that the material is stored in…

Last published: May 11, 2026

Contact Language Case Study: Seattle, WA

Zero waste case study of the contract between Seattle and service providers .

Relationship Between the Resource Conservation and Recovery Act’s Coal Combustion Residuals Rule and the Clean Water Act's National Pollutant Discharge Elimination System Permit Requirements

This is a collection of FQs

Documents, Reports and Photographs for Former Elf Atochem Atofina Site in Bensalem, Pennsylvania

RCRA Corrective Action Former Elf Atochem (Bensalem Redevelopment, LP ), Bensalem PA, Documents and Reports

Documents, Reports and Photographs for Browning Ferris Industries in Charleston, West Virginia

RCRA Corrective Action Site Browning Ferris Industries Chemical Service, Charleston WV, , Pittman Snax Sales Documents

Documents, Reports and Photographs for CSX Transportation Incorporated (Formerly: Beazer East) in Richmond, Virginia

RCRA Corrective Action CSX Trans. Inc. (Beazer East), Richmond VA, Documents and Reports

Documents, Reports and Photographs for Stone Industrial Division of Precision Products Group Incorporated in College Park, Maryland

RCRA Corrective Action Key Documents and Reports for Stone Industrial Division of Precision Products Group, College Park MD