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California Ambient Air Quality Standards


California Ambient Air Quality Standards (CAAQS)

In 1959 California enacted legislation requiring the state Department of Public Health to establish air quality standards and necessary controls for motor ...

Air Quality Standards - California Air Resources Board - CA.gov

Ambient air quality standards (AAQS) define clean air, and are established to protect even the most sensitive individuals in our communities.

Ambient Air Quality Standards | Santa Barbara County Air Pollution ...

Carbon Monoxide (CO). 8 Hour. 9.0 ppm (10 mg/m3) ; Carbon Monoxide (CO) · 1 Hour. 20 ppm (23 mg/m3) ; Carbon Monoxide (CO) · 8 Hour (Lake Tahoe). 6 ppm (7 mg/m3).

Ambient Air Quality Standards

These standards indicate the maximum amount of a pollutant that can be present in outdoor air without harm to the public's health. In some cases, the California ...

Ambient Air Quality Standards & Valley Attainmnet Status

California Ambient Air Quality Standards ; Ozone, 8 Hour, 0.070 ppm (137 µg/m3) ; Ozone · 1 Hour, 0.09 ppm (180 µg/m3) ; Carbon Monoxide, 8 Hour, 9 ppm (10 mg/m3).

Air Quality Standards and Attainment Status

California standards for ozone, carbon monoxide (except Lake Tahoe), sulfur dioxide (1-hour and 24-hour), nitrogen dioxide, suspended particulate matter - PM10, ...

National Ambient Air Quality Standards (NAAQS) and California ...

National Ambient Air Quality Standards (NAAQS) and California Ambient Air Quality. Standards (CAAQS) Attainment Status for South Coast Air Basin. CRITERIA.

Air Quality Pollutants and Standards

The US Environmental Protection Agency (EPA) has established National Ambient Air Quality Standards (NAAQS) for six common pollutants.

Criteria Air Pollutants in Los Angeles County

A recent study by the California Air Resources Board estimated that particulate pollution causes over 9,000 deaths in California annually. Ozone. In the ...

Meeting Air Quality Standards | Santa Barbara County Air Pollution ...

Effective May 6, 2024, the National Ambient Air Quality Standard (NAAQS) for PM2.5 was lowered from 12.0 to 9.0 µg/m3. EPA expects to finalize the ...

Authority - AQMD

The CCAA establishes numerous requirements for district plans to attain state ambient air quality standards for criteria air contaminants. For example, a ...

Cal. Code Regs. Tit. 17, § 93402 - Definitions | State Regulations

"California Ambient Air Quality Standard" or "CAAQS" means the maximum amount of a pollutant averaged over a specified period of time that can be present in ...

California Ambient Air Quality Standard Definition | Law Insider

Define California Ambient Air Quality Standard. or “CAAQS” means the maximum amount of a pollutant averaged over a specified period of time that can be ...

Air Quality Standards & Attainment Planning

Both the federal and State governments set air quality standards. In most cases, California's standards are more protective of health. The Attainment ...

NAAQS Table | US EPA

The Clean Air Act identifies two types of national ambient air quality standards. Primary standards provide public health protection.

Ozone Standards - San Joaquin Valley Air Pollution Control District

The new 8-hour-average ozone standard is the first of its kind in the state. For more information on California Ambient Air Quality Standards click here.

Attainment Status - San Diego County Air Pollution Control District

An area is designated in attainment when it is in compliance with the National and/or California Ambient Air Quality Standards.

Review of the California Ambient Air Quality Standard For Nitrogen ...

Likewise, based on estimates reported by the California Air Resources Board (CARB), reducing California ozone levels—which are by far the highest in the country ...

Air Quality Index (AQI) Basics - AirNow.gov

Think of the AQI as a yardstick that runs from 0 to 500. The higher the AQI value, the greater the level of air pollution and the greater the health concern ...

Emissions Reduction Policies and Recent Trends in Southern ...

Significant air quality improvements have occurred in southern California during the last 20 years (SCAQMD, 2013). This period also overlaps with the southern ...