RETURN TO USE INITIATIVE 2010 Demonstration Project JIBBOOM JUNKYARD: Sacramento, California THE SITE: The Jibboom Junkyard Superfund Site (the Site), located on the east bank of the Sacramento River in Sacramento, California, spans nine acres. The Site property was used by Associated Metals Cmpany for metal salvaging operations from 1950 until 1965. During this time, the company salvaged metal from a wide range of sources, from railroad cars and army tanks to batteries and transformers. These actvities left significant concentrations of lead, copper, zinc and polychlorinated biphenyls (PCBs) in the soil. In 1965, the State of California's Department of Transportation purchased a seven-acre area for part of the Interstate 5 freeway and Jibboom Street. The Site is located in a former industrial area close to downtown Sacramento. The Site is also bordered by a state Superfund site, an historic Pacific Gas and Electric Company (PG&E) steam electric power generating station. EPA discovered contaminants on site in 1981 and the Site was placed on the Superfund National Priorities List (NPL) in 1983. Construction of the Site's remedy was completed in 1987. The Site's remedy included excavation and off-site disposal of contaminated soil, which also prevented contamination of ground water. Clean fill material was used to elevate the Interstate 5 freeway by approximately 20 feet, which further enhanced the protectiveness of the Site's remedy. EPA deleted the Site from the NPLin 1991. The California Department of Environmental Protection (Cal/EPA) also cleaned up a portion of the adjacent PG&E site in 1996. HE OPPOR UNITY: Recognizing the Site's centra! location and redevelopment potential, the City of Sacramento included the Site as part of its River District Redevelopment Area. Plans for the area include 15 million square feet of office space, 6,500 PICTURED: The Jibboom Street Park Master Plan, (source: EPA) BARRIER: Potential concerns regarding whether the Site's remedy remained protective given proposed changes in local land uses and updated cleanup standards for site contaminants. SOLUTION: EPA conducted a Five-Year Review and determined that the Site's remedy remains protective of human health and the environment, now and in the future. PICTURED: Jibboom Street Park fountain area, looking north toward former PG&E power plant, (source: EPA) BEFORE: The Site was the location of a former metal salvaging facility. AFTER: Site reuses include a community park and public land used for the development of Jibboom Street and the Interstate 5 freeway. SEPA United States Environmental Protection Agency Superfund Redevelopment Initiative Updated: August 2010 1 ------- housing units and a community park encompassing a portion of the Site as well as the adjacent PG&E site. The area would also be linked with riverfront developments along the American and Sacramento Rivers. BARRIER: The primary objective of the Site's remedy was to prevent direct exposure to the contaminated soil and the secondary objective was to prevent the migration of contamination into area ground water. Both objectives were addressed by the excavation and off-site disposal of contaminated soil. In 2006, EPA learned the future land uses in the immediate vicinity of the Site included the potential for high-density residential development. The possibility as well as updated cleanup standards for site contaminants of concern, raised questions about the future protectiveness of the Site's remedy. THE SOLUTION: In 2007, EPA completed a discretionary Five-Year Review to consider any potential site impacts from changing land uses in the area and review updated cleanup standards for lead and PCBs in residential soils. EPA also coordinated closely with the Cal/EPA regarding the cleanup of the adjacent PG&E site and with the State Department of Transportation to ensure that appropriate precautionary information was included. EPA reviewed site soil and ground water data, conducted statistical analysis of the distribution of contaminants in remediated site soil and considered current information on the toxicity of lead and PCBs. The Five-Year Review concluded that the Site's remedy remains protective of the human health and the environment because residual lead and PCB concentrations in site soils are within an acceptable range for residential use. The addition of approximately ten feet of imported clean soil for the construction of Jibboom Street Park provided a better view of the Sacramento River and also enhanced the protectiveness of the Site's remedy. THE SITE NOW: Interstate 5 remains an active freeway and the remaining portion of the Site has been successfully reused as part of Jibboom Street Park, a destination attraction along the existing Sacramento River Parkway bicycle trail. Park facilities on the Site include a fountain, parking lot and landscaping. The adjacent PG&E site has been proposed as the future location for the Sacramento Museum of History, Science and Technology's new "Powerhouse Science Center." Plans for the new development include a science, space and technology museum within the rehabilitated PG&E power station, an adjacent restaurant and educational center, a planetarium and an open space park area with an amphitheater. FOR MORE INFORMATION, PLEASE CONTACT: Kevin Mayer, Remedial Project Manager, at (415) 972-3176 or maver.kevin@epa.aov: or Gary Riley, Region 9 Superfund Redevelopment Coordinator, at (415) 972-3003 or rilev.aarv@epa.aov. United States Environmental Protection i Agency Superfund Redevelopment Initiative Updated: August 2010 2 ------- |