Carbon monoxide

Nitrogen dioxide

Sulfur dioxide

Particulate matter

To set limits on the concentration of air pollutants in the air

To regulate the emissions of air pollutants from sources

To provide funding for air pollution control programs

To conduct research on the effects of air pollution

Carbon monoxide

Lead

Ozone

Sulfur dioxide

Primary pollutants are emitted directly from sources, while secondary pollutants are formed in the atmosphere from other pollutants.

Primary pollutants are more harmful to human health than secondary pollutants.

Secondary pollutants are more harmful to the environment than primary pollutants.

Primary pollutants are regulated by the Clean Air Act, while secondary pollutants are not.

To regulate the discharge of pollutants into waters of the United States

To set water quality standards for surface waters

To provide funding for wastewater treatment plants

To conduct research on the effects of water pollution

Oil and grease

Heavy metals

Bacteria

Radioactive materials

To regulate the discharge of pollutants from point sources into waters of the United States

To set water quality standards for surface waters

To provide funding for wastewater treatment plants

To conduct research on the effects of water pollution

Designated uses

Water quality criteria

Antidegradation requirements

Total maximum daily loads

To regulate the quality of drinking water

To set standards for the construction and operation of public water systems

To provide funding for drinking water infrastructure

To conduct research on the health effects of drinking water contaminants

Lead

Mercury

Arsenic

Fluoride

To establish the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards

To regulate the discharge of pollutants from point sources into waters of the United States

To set water quality standards for surface waters

To provide funding for wastewater treatment plants

Wasteload allocation

Load allocation

Margin of safety

Reserve capacity

To require federal agencies to consider the environmental impacts of their actions

To set environmental standards for federal agencies

To provide funding for environmental protection programs

To conduct research on the effects of environmental pollution

Preparing an environmental impact statement

Considering alternatives to the proposed action

Consulting with other agencies and the public

Mitigating the environmental impacts of the proposed action

To reduce acid rain

To control air pollution from motor vehicles

To establish a market-based system for reducing air pollution

To all of the above