| GCat | Design & Safety |
| MCat | Environment |
| SCat | Databases |
More than 40 environmental databases. Examples: ADI - Applicability Determination Index, AIRS - air pollution database, ERNS - Emergency Response Notification System, CEDR: Comprehensive Epidemiologic Data Resource, Chemical Scorecard - TRI, EPA environmental databases, ERNS - Emergency Response Notification System, HazDat, Rachel's Hazardous Waste Newsletters, IRIS - Integrated Risk Information System, maritime environmental safety databases, water quality databases, SEP Database - Supplemental Environmental Projects.
A database that contains memoranda issued by EPA on applicability & compliance issues
The Air Quality System (AQS) is USA's repository of ambient air quality data
A collection of precipitation and streamflow data from small agricultural watersheds in the United States
The Green Rating measures a vehicle's environmental friendliness on a scale of 1 to 100
Series of databases and environmental risk assessment tools (large number)
US Dept of Energy environmental risk management database system
Comprised of several interrelated files, DATALOG, CHEMFATE, BIOLOG, and BIODEG
Database of research documents, models, projects, etc. from EPA offices, programs and projects
Tools to retrieve environmental information, including preformatted query forms &mapping application
A single point of access to select EPA environmental data - seven different databases
EDR contains information and definitions of the data elements used in EPA systems
Information on EPA permitted facilities and their surrounding communities
High performance computing and communications resources to support environmental research for EPA
Information on EPA databases for enforcement and compliance history
Obtain information about a facility's toxic releases, air emission estimates, superfund status, etc
Listings of EPA clearinghouses, hotlines, information centers, library resources, publications
Information on substances and how they are represented in the Environmental Protection Agency (EPA) regulations
Database for filing of all federal Environmental Impact Statements (EISs)
Effects on human health of substances defined as hazardous by the 1990 amendments of CAA
Database on human health effects from exposure to 535 chemicals in the environment
Large number of databases and software programs categorized by media - air, water, etc.
Conservation information on more than 50,000 plants, animals, ecological communities in USA & Canada
Database on notifications of oil discharges and hazardous substances releases
Access to numerous databases related to natural resources such as soil survey data
Full text of National Academy of Sciences reports on environmental issues
Provides guidance, tools, databases used in environmental risk assessment (large number)
Database of US government research studies on environmental health and safety
Databases of chemical releases from manufacturing and animal waste from factory farms in USA
Surf Your Watershed [2828] Information, resources & links to local and state government information about watersheds in the US
Electronic library covering global warming, climate change, sea-level rise and related issues
Please report broken links by referencing the [number in brackets in grey].
» Databases 
You are not judged by the number of times you fail, but by the number of times you succeed. And the number of times you succeed is in direct proportion to the number of times you can fail and keep on trying.
