Creating new park lands, natural habitat, and community on top of the historic Puente Hills Landfill.

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History of the Landfill

The Puente Hills Landfill, formerly the second largest in the country, was in operation from 1956 to 2013. Prior to the landfill’s operation, the landscape was one part of a chain of Puente Hills canyons and hills—boasting a living system of grassland, oak-woodland, and coastal sage scrub chaparral habitats.

During the six-decades of landfill development that followed, the San Jose Creek was channelize north of the railroad line. The 2016 Masterplan assessed the landfill development as an irreversible change to the original canyonlands—but pointed to the potentials for create a new layer of landscape that celebrates the site’s natural past.

  • San Gabriel Valley Dump Opens

    The landfill opens as the privately owned and operated “San Gabriel Valley Dump,” growing to become the largest landfill in the United States.

    The landfill drastically alters the landscape of the San Gabriel Valley, filling in an entire back canyon of the nearby Puente Hills to address the waste management needs of a rapidly urbanizing east Los Angeles.

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“This is a wonderful opportunity to use the park as a way to connect people to nature and our human impact on the environment”

— Jackson L., El Monte Resident

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