Jan 28, 2025 · The San Gabriel Valley (Area 1) Superfund Site is one of four San Gabriel Valley Superfund sites in Southern California. These sites include areas of contaminated groundwater in the 170-square-mile San Gabriel Valley.

Conditions at listing (September 1983): San Gabriel Valley (Area 1) is a ground water plume that runs along the axis of the Rio Hondo Wash and the Salt Pit Wash in the San Gabriel ground water basin in El Monte, Los Angeles County, California. The …

EPA, along with the State of California and local agencies, is protecting the groundwater by removing toxic chemicals from contaminated portions of the aquifer.* This fact sheet describes cleanup progress at four Superfund sites within the SGV. The sites are called San Gabriel Valley Area 1, Area 2, Area 3, and Area 4.

sites are called San Gabriel Valley Area 1, Area 2, Area 3, and Area 4. San Gabriel Valley Superfund sites (boundaries are approximate) *An aquifer is an area below the ground that contains water. CLEANUP HIGHLIGHTS SINCE 2002 More than 200 billion gallons of contaminated water have been treated, and more than 100,000 pounds of contaminants ...

Jan 12, 2025 · The San Gabriel Valley (Area 1) site is an 11-square-mile area of contaminated groundwater in Los Angeles County, California. It is one of four Superfund sites in the 170-square-mile San Gabriel Valley.

EPA is the lead regulatory agency overseeing the cleanup at' the San Gabriel Valley Superfund Site. The San Gabriel Valley Superfund Site Area 1 has a CERCLIS ID CAD980677355. The San Gabriel Valley encompasses a basin that is approximately 170 square miles.

Feb 4, 2025 · The September order will protect the essential drinking water supplies in the San Gabriel Valley. The treatment system is designed to intercept the most highly contaminated groundwater plume and prevent it from migrating further.

The San Gabriel Valley Area 2 Superfund Site is one of four Superfund sites in the San Gabriel Basin aquifer, a critical source of drinking water for Southern California. Groundwater contamination was first detected in the San Gabriel Valley in 1979.

Conditions at listing (September 1983): San Gabriel Valley (Area 1) is a ground water plume that runs along the axis of the Rio Hondo Wash and the Salt Pit Wash in the San Gabriel ground water basin in El Monte, Los Angeles County, California. The plume also parallels the San Gabriel River to the east. It is approximately 4 miles long and 1.5 ...

The San Gabriel Valley Area 1 (Operable Unit 2) site is part of a larger area of ground water contamination located near the San Bernadino Border, in Los Angeles County, California. This site is situated to the south of the Pomona Freeway and to the west of the San Gabriel Freeway, and consists of low lying hills.