Point Source Pollution
Superfund Sites
The San Gabriel Valley Area 3 Superfund Site (Area 3) is one of four Superfund Sites in San Gabriel Valley. Area 3 (formerly identified as the Alhambra Operable Unit) includes an approximate area of 19-square-miles containing intermittent areas of groundwater contamination. Area 3 comprises portions of the cities of Alhambra, Rosemead, San Gabriel, San Marino, South Pasadena, and Temple City.
Contamination from volatile organic compounds (VOCs) was first detected in 1979 in the San Gabriel Ground Water Basin (San Gabriel Basin) within the Valley County Water District, when Aerojet Electrosystems in Azusa sampled wells. Hundreds of individual facilities in the San Gabriel Basin could be contributing to the contamination in the basin through improper chemical handling and disposal practices.
EPA currently is evaluating the results of a remedial investigation of regional groundwater contamination in Area 3 to identify cleanup options. This assessment also involves facility investigations in cooperation with the California Regional Water Quality Control Board, Los Angeles Region (RWQCB) as part of an effort to identify Potentially Responsible Parties (PRPs - companies that are potentially responsible for generating, transporting, or disposing of the hazardous waste found at the site) and associated sources of groundwater contamination. EPA's review of investigation data and historical records will help to identify PRPs.
Air Quality
Air quality indices (AQI) are numbers used by government agencies to characterize the quality of the air at a given location. As the AQI increases, an increasingly large percentage of the population is likely to experience increasingly severe adverse health effects. Air quality index values are divided into ranges, and each range is assigned a descriptor and a color code. Standardized public health advisories are associated with each AQI range. The United States Environmental Protection Agency (EPA) uses the following AQI:
- ALHAMBRA AUTO SERVICE, ALHAMBRA, CA
- ALHAMBRA COMMUNITY HOSPITAL, ALHAMBRA, CA
- ALHAMBRA FOUNDRY CO LTD, ALHAMBRA, CA
- BOB WONDRIES FORD, ALHAMBRA, CA
- COAST TO COAST METAL FINISHING, ALHAMBRA, CA
- COSTELLO BROTHERS INC, ALHAMBRA, CA
- INTERNATIONAL EXTRUSION CORP, ALHAMBRA, CA
- PEMACO METAL PROCESSING CORP, ALHAMBRA, CA
- SEIDNER & CO INC, ALHAMBRA BOD, ALHAMBRA, CA
- SFIC PROPERTIES, INC., ALHAMBRA, CA
Superfund Sites
The San Gabriel Valley Area 3 Superfund Site (Area 3) is one of four Superfund Sites in San Gabriel Valley. Area 3 (formerly identified as the Alhambra Operable Unit) includes an approximate area of 19-square-miles containing intermittent areas of groundwater contamination. Area 3 comprises portions of the cities of Alhambra, Rosemead, San Gabriel, San Marino, South Pasadena, and Temple City.
Contamination from volatile organic compounds (VOCs) was first detected in 1979 in the San Gabriel Ground Water Basin (San Gabriel Basin) within the Valley County Water District, when Aerojet Electrosystems in Azusa sampled wells. Hundreds of individual facilities in the San Gabriel Basin could be contributing to the contamination in the basin through improper chemical handling and disposal practices.
EPA currently is evaluating the results of a remedial investigation of regional groundwater contamination in Area 3 to identify cleanup options. This assessment also involves facility investigations in cooperation with the California Regional Water Quality Control Board, Los Angeles Region (RWQCB) as part of an effort to identify Potentially Responsible Parties (PRPs - companies that are potentially responsible for generating, transporting, or disposing of the hazardous waste found at the site) and associated sources of groundwater contamination. EPA's review of investigation data and historical records will help to identify PRPs.
Air Quality
Air quality indices (AQI) are numbers used by government agencies to characterize the quality of the air at a given location. As the AQI increases, an increasingly large percentage of the population is likely to experience increasingly severe adverse health effects. Air quality index values are divided into ranges, and each range is assigned a descriptor and a color code. Standardized public health advisories are associated with each AQI range. The United States Environmental Protection Agency (EPA) uses the following AQI: