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Superfund Sites in Reuse in California

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Advanced Micro Devices, Inc.

The former Advanced Micro Devices, Inc. (AMD) 901/902 Thompson Place Superfund site covers six acres in Sunnyvale, California and is considered part of the “Triple Site,” which also includes the TRW Microwave Superfund site and the Philips Semiconductors Superfund site. AMD designed and made semiconductor devices at two buildings on site from 1969 to 1992. AMD moved in 1992, leaving the buildings empty. Facility operations contaminated soil and groundwater with volatile organic compounds, primarily trichloroethylene (TCE). EPA placed the site on the National Priorities List (NPL) in 1986. AMD removed soil contamination and treated contaminated groundwater. A developer bought the site property in 2007 and demolished the two former AMD buildings. The property owner developed the former AMD facility area as a self-storage facility. Several other commercial and light manufacturing businesses also now operate on site. Groundwater treatment and monitoring are ongoing. In addition, vapor intrusion assessments and mitigation activities are ongoing in nearby homes and schools over AMD’s TCE plume, which is commingled with TCE plumes from the nearby TRW Microwave Superfund site and the Philips Semiconductors Superfund site.
Last updated June 2017

As of December 2018, EPA had data on 27 on-site businesses. These businesses employed 286 people and generated an estimated $49,811,926 in annual sales revenue. For additional information click here.

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Advanced Micro Devices, Inc. (Building 915)

The 25-acre Advanced Micro Devices, Inc. (Building 915) Superfund site is located in Sunnyvale, California. Advanced Micro Devices, Inc. (AMD) made semiconductors at Building 915. Leaking underground storage tanks in groundwater wells under Building 915 resulted in soil contamination. EPA added the site to the National Priorities List (NPL) in 1990. AMD excavated and removed contaminated soil and a 4,700-gallon underground acid neutralization system. Extraction wells and pumps treat contaminants and prevent them from moving into nearby areas. Under the oversight of EPA and the San Francisco Bay Regional Water Quality Control Board, AMD conducted a vapor intrusion investigation in Building 915 that showed no evidence of unacceptable vapor intrusion. In 2003, AMD transferred ownership of the site property to Spansion LLC, a company specializing in flash memory devices. Spansion operated at the site from 2005 to 2015. Watt Investments at Sunnyvale LLC bought the site property and sold it to Landsea Holdings Corporation in February 2016 and the on-site buildings were demolished. Landsea is currently constructing a 450-home development on the site, which will include preemptive mitigation systems to protect against potential future vapor intrusion.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Aerojet General Corp. Alternative Energy Reuse Green Remediation Reuse

Solar panels at the siteAerojet General Corp.The Aerojet General Corp. Superfund site covers about 5,900 acres near Rancho Cordova, 15 miles east of Sacramento, California. Aerojet and its subsidiaries have researched, designed and made rocket engines and chemicals on site since 1953. Aerojet’s previous disposal and operating practices led to soil and groundwater contamination. EPA listed the site on the National Priorities List (NPL) in 1983. Aerojet treated contaminated groundwater and prevented it from spreading to nearby areas using pumps. Aerojet continues to explore methods to clean up soil and groundwater contamination. Aerojet built a solar facility on site in 2010. It generates 6 megawatts of electricity. Aerojet uses the solar array to power 20 percent of the site’s groundwater treatment system. The solar panels also reduce the company’s carbon footprint. Aerojet continues to operate on the site. Tenants also use the site for office, commercial and light industrial activities. Future reuse plans for other parts of the site include mixed-use development with residential, commercial and industrial areas.
Last updated April 2018

As of December 2018, EPA had data on 7 on-site businesses. These businesses employed 2,404 people and generated an estimated $1,364,323,852 in annual sales revenue. For additional information click here.

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Applied Materials

Sign for Applied Materials buildingsApplied MaterialsThe Applied Materials Superfund site is located in Santa Clara, California. A large industrial building occupies most of the 9-acre area. Applied Materials began making semiconductor wafers in the building in 1974. Sampling identified contaminated soil and groundwater in 1983. Leaking pipes connected to underground tanks may have resulted in the contamination. Applied Materials installed a system to pump and treat contaminated groundwater in 1984. The company also removed underground storage tanks and nearby soil in 1985. EPA added the site to the National Priorities List (NPL) in 1987. The groundwater treatment system operated until 2002; groundwater monitoring is ongoing. Applied Materials ended its research and manufacturing activities on site in 2003 and converted the building into offices and educational facilities.
Last updated June 2017

As of December 2018, EPA had data on 3 on-site businesses. These businesses employed 810 people and generated an estimated $623,589,222 in annual sales revenue. For additional information click here.

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Beckman Instruments (Porterville Plant)

The Beckman Instruments (Porterville Plant) Superfund site is located in Porterville, California. The 160-acre area includes the 12-acre Beckman plant property and other nearby commercial, agricultural and residential properties. The company makes printed circuit boards and electronic instrument parts at the facility. From 1974 to 1983, facility operators disposed of wastes in an evaporation pond on site. This pond is the most likely source of groundwater contamination in the area surrounding the Beckman facility. Investigators also identified lead contamination in the soil. In 1985, Beckman began operating a groundwater pump-and-treat system. EPA placed the site on the National Priorities List (NPL) in 1986. In 1989, cleanup addressed contaminated soil and expanded the groundwater treatment system. In 2005, EPA agreed to discontinue use of the groundwater treatment system and allow the groundwater to recover naturally. Groundwater contamination is now in one very small, localized spot west of the Beckman facility. Groundwater monitoring is ongoing. Beckman Instruments continues to operate its plant on site. People continue to live in the 850 homes on site and grow crops, tend orchards and raise livestock. EPA’s cleanup plan allowed Beckman Instruments and nearby companies to remain open, enabling the community to retain jobs and income and maintain a safe working environment.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 203 people and generated an estimated $21,203,000 in annual sales revenue. For additional information click here.

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Coalinga Asbestos Mine Capped Site Reuse

Coalinga Asbestos MineCoalinga Asbestos MineThe Coalinga Asbestos Mine Superfund site is located in Fresno County, California. The site includes two areas. The first area is a 120-acre tract of land where mining-related activities took place from 1962 to 1977. The second area is a 107-acre area in the City of Coalinga that hosted an asbestos milling, manufacturing, storage and transportation center. This area is also part of the nearby Atlas Asbestos Mine Superfund site. EPA discovered that asbestos had migrated from storage areas and polluted buildings, soil and groundwater across Coalinga. EPA placed the site on the National Priorities List (NPL) in 1983. As part of the cleanup, potentially responsible parties demolished the storage buildings, removed contaminated soil and debris, and consolidated cleanup waste in an underground waste management unit capped with an impermeable cover. These actions helped eliminate the risks from asbestos, making the area outside the waste management unit suitable for redevelopment. In 1998, EPA took the site off the NPL. Following cleanup, redevelopment across the City of Coalinga Area includes stores, restaurants, social service, law enforcement and medical offices, and residential developments.
Last updated July 2017

As of December 2018, EPA had data on 33 on-site businesses. These businesses employed 366 people and generated an estimated $53,107,889 in annual sales revenue. For additional information click here.

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Coast Wood Preserving

The 8-acre Coast Wood Preserving (CWP) Superfund site is located 3 miles south of Ukiah in northern California. Historically, CWP facility operators used a solution of sodium dichromate, copper sulfate and arsenic acid to pressure-treat and preserve wood products. Dripping and spillage of the chemical solution contaminated soil and groundwater on and off site. In 1983, CWP began treating groundwater. That same year, EPA added the site to the National Priorities List (NPL). Since the site’s listing, CWP has paved over soils to prevent water penetration, started groundwater extraction and treatment along with installing a slurry wall, and excavated contaminated soil for off-site disposal. From 1999 to 2010, an in situ reductant injection system was operating to decrease the chromium concentrations on site. In 2004, CWP began using a different chemical solution for its wood-treating operations. CWP continues to operate on the site. Long-term groundwater monitoring is ongoing.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 12 people and generated an estimated $2,230,769 in annual sales revenue. For additional information click here.

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Crazy Horse Sanitary Landfill Alternative Energy Reuse Capped Site Reuse

The 160-acre Crazy Horse Sanitary Landfill (CHL) in northern Monterey County is about five miles northeast of the City of Salinas, California. From the early 1970s until about 1982, a local manufacturing plant disposed of waste materials here, contaminating groundwater. In 1988, the City of Salinas installed a groundwater treatment system to address the contamination. In 1990, CHL was listed on the National Priorities List (NPL). The CHL stopped accepting waste and was closed to the public in May 2009. The CHL is currently completing its landfill plan post-closure requirements under a 2013 Regional Water Quality Control Board Waste Discharge Requirements Order. Since 1987, Pacific Energy has operated a 1.3 megawatt (MW) landfill gas plant for electricity generation on site, which was recently dismantled and will likely be replaced by a 3.2 MW plant. The National Renewable Energy Laboratory, through the RE-Powering America’s Land Initiative completed a study of renewable energy opportunities at the site. A preliminary assessment indicated that about 20 acres of the site are adequate for technology development, which could host up to a 3.5 MW photovoltaic (PV) system. As part of the final landfill closure plan, the Salinas Valley Solid Waste Authority has revised the CHL final landfill cover system to enable the future use of PV. Additional studies of potential solar energy generation are in progress.
Last updated January 2018

As of December 2018, EPA had data on 2 on-site businesses. EPA did not have further economic details related to these businesses. For additional information click here.

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CTS Printex, Inc.

Townhouses on the siteCTS Printex, Inc.The CTS Printex, Inc. Superfund site is located in Mountain View, California. From 1966 to 1985, Printex Corporation (now CTS Printex) made printed circuit boards at a facility on a 5.5-acre property owned by ADN Corporation. Site waste management practices resulted in soil and groundwater contamination at the former facility property and groundwater contamination downgradient. ADN Corporation and CTS Printex excavated contaminated soil and extracted contaminated groundwater between 1985 and 1996. In 1990, EPA placed the site on the National Priorities List (NPL). CTS Printex cleaned its waste collection system, removed contaminated structures, materials and soil, and installed and operated a groundwater extraction system. In 2006, a developer bought the former location of the CTS Printex manufacturing facility and built a public park and 108 townhomes after addressing soil contamination and installing a passive sub-slab ventilation system with a vapor barrier for the townhomes. EPA worked closely with CTS Printex and the developer to ensure the housing development would be compatible with future groundwater cleanup work. In 2011, EPA required that CTS Printex take additional actions to clean up remaining groundwater contamination and prevent vapor-forming chemicals from entering any building above contaminated groundwater. CTS Printex is working on cleanup plans to address the remaining groundwater contamination.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. This business employed 14 people and generated an estimated $1,200,000 in annual sales revenue. For additional information click here.

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Del Amo Capped Site Reuse

Mitsubishi Logistics office onsiteDel AmoThe 280-acre Del Amo Superfund site is located in Los Angeles, California, in an area known as the Harbor Gateway. The Del Amo synthetic rubber plant operated on site from 1943 to 1972. Manufacturing generated various sludge wastes and wastewaters. Site operators placed some of these wastes in unlined pits and evaporation ponds on site. Manufacturing operations also resulted in releases of hazardous substances to the soil at various locations. Developers turned most of the site into an industrial park in the 1970s. In 1981, the state required the cleanup of soil from one of the waste pits. EPA added the site to the National Priorities List (NPL) in 2002. Cleanup efforts have included waste pit capping, removal of contaminated vapors from soil beneath the waste pits, and removal of contaminated soils. Biodegradation and groundwater extraction and treatment will address the benzene contamination in groundwater. Developers subdivided 90 percent of the site property into 83 separate parcels and redeveloped them as a commercial and industrial business park. Facilities include warehouses, freight and manufacturing areas, and office space. In addition, high-voltage power transmission lines owned by the Los Angeles Department of Water and Power run through the site property.
Last updated June 2017

As of December 2018, EPA had data on 253 on-site businesses. These businesses employed 4,918 people and generated an estimated $1,304,436,464 in annual sales revenue. For additional information click here.

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Del Norte Pesticide Storage

Entrance to County Property at Del Norte Pesticide Storage SiteDel Norte Pesticide StorageThe 1-acre Del Norte Pesticide Storage Superfund site is located just north of Crescent City, California. From 1970 to 1981, Del Norte County operated a temporary pesticide storage area at the site and accepted containers from local agricultural industries. In the process, operators released contaminated waste and rinse water into an unlined basin. Contaminated shallow groundwater threatened homes, farmland and private wells near the site. In 1984, EPA added the site to the National Priorities List (NPL). EPA removed contaminated soils and installed a water treatment system in 1989. The system removed about 95 percent of the contamination within its first four years of operation. The system stopped the spread of low levels of one remaining contaminant by 2002. EPA took the site off the NPL in September 2002. Groundwater is now close to meeting drinking water standards. The Del Norte County’s Agriculture Department office and related facilities are now located on site. Del Norte County has considered using parts of the site to support future growth in the area.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. This business employed 6 people. For additional information click here.

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Fairchild Semiconductor Corp. (South San Jose Plant)

The 22-acre Fairchild Semiconductor Corp. (South San Jose Plant) Superfund site is located about 9 miles southeast of San Jose, California. The site is a former semiconductor manufacturing facility. It operated from 1977 to 1983. Consistent with industry practice at the time, manufacturing operations required the use and storage of industrial solvents. In 1981, Fairchild Semiconductor discovered that an underground organic solvent waste tank had failed, impacting soil and groundwater. Since that time, the company has completed several actions to clean up soil and groundwater. In 1989, EPA added the site to the National Priorities List (NPL). Cleanup included soil removal, construction of a slurry cut-off wall around the site, groundwater pumping and treatment, soil vapor extraction and treatment, groundwater monitoring, and institutional controls. With regulatory agency approval, the pump-and-treat system shut down in 1998. Fairchild continues to monitor the progress of natural groundwater recovery over time and is evaluating alternative technologies to accelerate the pace of groundwater cleanup. The site was unoccupied from 1983 until 1998. Developers constructed the Bernal Plaza shopping center on the site between 1998 and 2000. The plaza includes shops, restaurants and parking.
Last updated June 2017

As of December 2018, EPA had data on 50 on-site businesses. These businesses employed 640 people and generated an estimated $75,561,659 in annual sales revenue. For additional information click here.

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Firestone Tire & Rubber Co. (Salinas Plant)

The 256-acre Firestone Tire & Rubber Co. Superfund site is located in an agricultural area in Salinas, California. The Firestone Tire & Rubber Company used the facility to make tires from 1963 to 1980. Operators used a variety of chemicals that contaminated soil and groundwater. After the facility closed, Firestone conducted interim cleanup measures. Firestone treated groundwater and removed contaminated soil. In 1987, EPA placed the site on the National Priorities List (NPL). EPA required Firestone to expand its groundwater treatment system. Groundwater treatment met the required standards. After the tire manufacturing facility closed, developers built the Firestone Business Park at the site. The commercial facility is home to several businesses. EPA took the site off the NPL in 2005.
Last updated June 2017

As of December 2018, EPA had data on 15 on-site businesses. These businesses employed 615 people and generated an estimated $92,048,940 in annual sales revenue. For additional information click here.

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Fresno Municipal Sanitary Landfill Athletic Fields Reuse Capped Site Reuse

Skateboard halfpipeFresno Municipal Sanitary LandfillThe 145-acre Fresno Municipal Sanitary Landfill Superfund site is located 4 miles from Fresno, California. The City of Fresno began operating the landfill in 1935. While conducting tests in 1983, the California Department of Health Services found that methane gas and vinyl chloride gas had travelled from the landfill to surrounding areas. Testing also found that contaminated groundwater had impacted several residential wells next to the site. Fresno closed the landfill in 1989. EPA added the landfill to the National Priorities List (NPL). In 1990 and 1991, Fresno removed contaminated landfill gas. The City also capped the landfill and put landfill gas control and surface water management systems in place. The City also built a groundwater treatment facility. These systems continue to operate. In 2001, the City redeveloped part of the site into the Fresno Regional Sports Complex. The facility includes soccer and softball fields, restrooms and a playground.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Frontier Fertilizer

Frontier FertilizerFrontier FertilizerThe 8-acre Frontier Fertilizer Superfund site is located in Davis, California. Operations on site in the 1970s and 1980s included pesticide and herbicide storage, mixing and delivery. These activities contaminated site soils, which led to contamination of the groundwater. EPA placed the site on the National Priorities List (NPL) in 1994. Today, it illustrates innovative green remediation and renewable energy opportunities at Superfund sites. For the first time in the United States, solar energy is completely powering a Superfund groundwater cleanup. EPA first installed solar panels at the site in 2007. The panels reduced the amount of electricity needed to run the groundwater treatment system. After expansion of the system in 2010, the solar panels now provide 100 percent of the power for the system. The solar panels cover half an acre. They reduced energy costs by $15,000 a year and carbon dioxide emissions by more than 54 metric tons a year. Heating of site soils finished in 2012, reducing the anticipated time required for cleanup by about 120 years, from 150 years to 30 years. In 2017, additional wells were installed to enhance groundwater capture and treatment. The significant reduction in contamination has increased the likelihood of additional site redevelopment in the future. The site is located next to a freeway and a busy shopping center.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Hewlett-Packard (620-640 Page Mill Road)

The Hewlett-Packard (620-640 Page Mill Road) Superfund site is located in Palo Alto, California. Hewlett-Packard made optoelectronic equipment at the 10-acre site from 1962 to 1986. In 1981, at least 300 gallons of waste solvents leaked from a buried storage tank. The company removed the tank and about 100 cubic yards of contaminated soil in 1981. The company moved the materials to a hazardous waste facility. Since 1982, the company has been pumping and treating contaminated groundwater containing various volatile organic compounds including trichloroethylene (TCE). EPA added the site to the National Priorities List (NPL) in 1990. Between 1987 and 1992, Hewlett-Packard removed and disposed of about 11,000 cubic yards of contaminated soil from the site. Hewlett-Packard treated soil vapors from 1994 to 1997. After stopping operations in 1986, Hewlett-Packard built an office building on site in 1992. Hewlett-Packard sold the building and associated land lease in May 2007. A law firm currently occupies the building. A vapor intrusion assessment was completed at this and other commercial and residential buildings over Hewlett-Packard’s TCE plume between 2012 and 2015. Though certain subsurface locations (such as sub-grade garages and elevator shafts) showed elevated TCE levels, no evidence of unacceptable vapors was detected in occupied areas in homes and workplaces.
Last updated June 2017

As of December 2018, EPA had data on 8 on-site businesses. These businesses employed 1,332 people and generated an estimated $98,950,027 in annual sales revenue. For additional information click here.

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Indian Island Tribal Lands Reuse

The 1.5-acre Indian Island site is located in Eureka, California. The site is a significant Native American cultural heritage area and is listed on the National Register of Historic Places and as a threatened National Historic Landmark. Beginning in the 1850s, settlers drove the Wiyot Tribe from Indian Island. This campaign culminated in a massacre in 1860. The few survivors were forcibly moved to a reservation. From the 1870s to 1990, a dry dock and ship repair facility operated on site. Shipyard operations and contamination from paints, solvents, metals and petroleum products impacted the area. In 2000, the Wiyot Tribe purchased the contaminated site property. In 2004, the city of Eureka deeded the surrounding 40 acres to the tribe. For more than a decade, the Wiyot Tribe worked to leverage more than $2.8 million in state and federal resources to clean up the site. EPA assistance included a $200,000 brownfield cleanup grant in 2004, a review of site cleanup plans and a $508,000 time-critical removal action. Cleanup efforts included the removal of leaking boat batteries, extensive soil excavation and capping. Archaeologists monitored the cleanup process to ensure preservation of excavated artifacts. Land use restrictions prevent development inconsistent with cultural preservation. Ecological restoration and cultural preservation efforts are underway. Ecological restoration will prevent erosion and support and enhance wildlife habitat. Cultural preservation efforts are restoring the Wiyot Tribe’s connections to the area.
Last updated April 2018

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Industrial Waste Processing

Commercial business on siteIndustrial Waste ProcessingThe Industrial Waste Processing (IWP) Superfund site occupies a half-acre in Pinedale, California. From 1967 to 1981, IWP operated a chemical recycling facility on site for petroleum residues from natural gas field pipelines and solvents from the paint and ink industries. The facility also recovered lead solder and zinc from the metal can manufacturing industry. IWP also distributed various chemical solvents for Ashland Oil. After 1983, IWP used the site to store chemicals and equipment. Improper storage and handling practices resulted in soil contamination. In 1988, EPA removed hazardous liquids and contaminated soils from the site. EPA added the site to the National Priorities List (NPL) in 1990 after investigators found that contamination remained in the soil. In 1999, potentially responsible parties led additional cleanup activities. Cleanup involved removing and disposing of remaining contaminated soils as well as backfilling excavated areas with clean material. In 2001, the site owner sold the site property to Pacific Tent & Awning, a manufacturer of fabric awnings and accessories. The company built a warehouse and office facility that covers about 80 percent of the site. Asphalt, concrete and landscaping cover the rest of the site. Site monitoring is ongoing.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. This business employed 10 people and generated an estimated $960,000 in annual sales revenue. For additional information click here.

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Intel Corp. (Santa Clara III)

Sign to Vantage Data Center campusIntel Corp. (Santa Clara III)The 4-acre Intel Corp. (Santa Clara III) Superfund site is located in Santa Clara, California. From 1976 to 2008, Intel Corporation (Intel) operated a plant on site that performed quality control of chemicals and tested microprocessors. Regulators first found groundwater contamination at the site in 1982. In 1985, Intel started treating site groundwater. In 1986, EPA placed the site on the National Priorities List (NPL) because groundwater contamination threatened the drinking water supply source for Santa Clara Valley residents. Intel operated the groundwater treatment system until 1994. A small area of groundwater contamination remains at the site. Intel continues to monitor the area and has used amendments to enhance the natural breakdown of the contaminants over time. From 2008 to mid-2010, the site was unoccupied. Vantage Data Centers purchased the property in 2010 and developed a data storage center on site. Since then, the company has continued to invest in its facility and expand its business capacity at the site.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. EPA did not have further economic details related to this business. For additional information click here.

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Intel Magnetics

Microsemi office building onsiteIntel MagneticsThe 3-acre Micro Storage/Intel Magnetics (MS/IM) Superfund site in Santa Clara, California, is commonly referred to as the Intel Magnetics site. Past activities at the IM building and nearby MS building resulted in shallow groundwater contamination. Site investigations identified two main sources of contamination – the IM facility’s underground waste-solvent storage tank and the MS chemical storage area. EPA placed the IM site on the National Priorities List (NPL) in 1986. EPA updated the site’s listing in 1988, including the MS area as part of the site. A groundwater treatment system operated on site from 1986 to 1995. Groundwater monitoring is ongoing. Microsemi Corp. – RF Power Products currently operates at the site. It uses the former IM building for administration and high-tech-related manufacturing. A high-tech company recently used the former MS building. It is being renovated for use by a future tenant.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 83 people and generated an estimated $40,841,000 in annual sales revenue. For additional information click here.

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Intersil Inc./Siemens Components

The 15-acre Intersil Inc./Siemens Components Superfund site is located in Cupertino, California. Intersil, Inc. and Siemens Components made semiconductors for several years at two nearby locations. Studies in the 1980s as part of the California Regional Water Quality Control Board's underground storage tank leak detection program found contaminants in soil and groundwater. The contamination may have resulted from localized spills and from leaking underground storage tanks and piping. At the Siemens facility, operators used four underground tanks to store waste solvents. At the Intersil facility, possible sources of contamination included waste neutralization systems and concrete scrubber pit sumps. Intersil stopped manufacturing at the site in 1988. Siemens stopped manufacturing in the mid-1990s. EPA added the site to the National Priorities List (NPL) in 1990. Cleanup activities included the removal and disposal of about 182 cubic yards of soil, treatment of chemical vapors from the soil, and groundwater treatment. Indoor air samples indicate that contaminants in subsurface soil and groundwater no longer pose a risk to human health. Groundwater treatment and monitoring are ongoing. Property owners demolished the building on the former Intersil property in 1997. In 2007, Tantau Investments purchased the property and built a commercial office building. Kaiser Permanente now occupies the building and uses it as part of a medical facility. Panasonic Corporation and Apple facilities are located on the former Intersil property.
Last updated June 2017

As of December 2018, EPA had data on 11 on-site businesses. These businesses employed 210 people and generated an estimated $105,805,231 in annual sales revenue. For additional information click here.

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J.H. Baxter & Co. Capped Site Reuse

The 205-acre J.H. Baxter & Co. Superfund site is located in the City of Weed in northern California, less than 40 miles south of the Oregon border. J.H. Baxter & Co. and Roseburg Forest Products own the site. Various companies have operated at the site, conducting wood treatment and related activities continuously since 1937. Wood-treating operations resulted in contaminated groundwater, surface water, soil and sludge, as well as contamination of a nearby creek. In 1986, potentially responsible parties (PRPs) installed a fence to limit site access. In 1989, EPA placed the site on the Superfund program’s National Priorities List (NPL). In the late 1990s, the PRPs fenced the site to prevent direct contact with contamination. Construction of a slurry wall and extraction well system finished in 1999; the extraction well system is anticipated to continue operating indefinitely. Some of the cleanup has finished; groundwater treatment and monitoring are ongoing. J.H. Baxter & Co. continues to operate its wood-treating plant on the site. Roseburg Forest Products operates a lumber mill and veneer plant on site. Pacific States Treating also leases part of the site.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 169 people and generated an estimated $44,087,000 in annual sales revenue. For additional information click here.

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Jibboom Junkyard

The Robert T. Matsui Waterfront Park is along the Sacramento River Parkway bicycle trailJibboom JunkyardThe 9-acre Jibboom Junkyard Superfund site is located in Sacramento, California. The Associated Metals Company used the site for metal salvaging operations from 1950 to 1965. The California Department of Transportation bought the property to build an elevated freeway in 1965. Salvage activities left the site contaminated with heavy metals and other chemicals. EPA added the site to the National Priorities List (NPL) in 1983. Cleanup took place from 1985 to 1987. Activities included removal and disposal of contaminated soil and backfilling with clean soil. Soil cleanup prevented contamination of groundwater. After cleanup, EPA took the site off the NPL in 1991. Today, U.S. Interstate 5 covers 7 acres of the site. The remainder of the site, between the freeway and the Sacramento River, is home to Robert T. Matsui Waterfront Park. The City-led park design process began in the 1990. Park construction finished in 2007. The park includes a pedestrian walkway that connects a fountain plaza to a pedestrian overlook on a pier with interpretive signage. The park has an open green space area, planted with native grasses, trees and vegetation, for picnicking and benches with river views. Plans for the site include additional park and picnic areas.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Lorentz Barrel & Drum Co. Capped Site Reuse

The 7-acre Lorentz Barrel & Drum Co. Superfund site is located in San Jose, California. A former drum recycling facility operated on site from 1947 to 1987. During that time, the facility accepted over two million drums. The facility emptied, cleaned, resealed, repainted and resold the used drums. The drums typically contained residues of solvents, acids and caustic chemicals. Contamination of soils, groundwater and a nearby creek resulted from the improper handling of wastes in the drums as well as waste generated during the recycling process. EPA added the site to the National Priorities List (NPL) in 1989. Cleanup activities have included excavation and removal of remaining drums and contaminated soils, capping of the property, and groundwater treatment and monitoring. Property owners routinely inspect and maintain the cap. Groundwater treatment is ongoing. Car dealerships use a large portion of the site for fenced parking. A paper recycling company, Caraustar Industries, operates on the remaining portion of the site.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. This business employed 6 people and generated an estimated $19,760,000 in annual sales revenue. For additional information click here.

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Louisiana-Pacific Corp.

The Louisiana-Pacific Corp. Superfund site is located in Oroville, California. The site includes two pieces of property – a 100-acre wood-processing plant and a 115-acre landfill – located a half-mile apart. Georgia-Pacific Corporation built the plant in 1969 and operated it until 1973. In 1973, Louisiana-Pacific Corporation took on ownership and operation of the plant and landfill. Prior to 1980, during installation of a recycling system, operators released wastewater from the plant’s glue kitchen to an unlined pond at the site. Until 1988, workers applied a fungicide spray to treat cut timber several months of each year. In 1973, the State detected high levels of a chemical contaminant in nearby residential wells. By 1983, an area of groundwater contamination extended 1.5 miles south. EPA added the site to the National Priorities List (NPL) in 1986. EPA’s interim soil cleanup included site access restrictions, such as a perimeter fence and deed restrictions on future residential use of the site. Cleanup also included additional soil sampling. The groundwater cleanup included restrictions on new well permits and monitoring of on-site wells to obtain additional information about formaldehyde and arsenic levels in the groundwater at the site. After additional soil and groundwater investigations, EPA determined that the site did not require further cleanup actions. EPA took the site off the NPL in 1996. Louisiana-Pacific Corporation has since closed. An industrial park is now located on the site.
Last updated June 2017

As of December 2018, EPA had data on 14 on-site businesses. These businesses employed 51 people and generated an estimated $18,611,491 in annual sales revenue. For additional information click here.

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McColl Athletic Fields Reuse Capped Site Reuse

Golf courseMcCollThe McColl Superfund site is located in Fullerton, California, about 20 miles east of Los Angeles. From 1942 to 1946, oil companies dumped refinery waste into 12 on-site pits. The waste seeped into the soil and groundwater, creating a hazard for the community. In 1983, EPA added the site to the Superfund program’s National Priorities List (NPL). Between 1996 and 1997, potentially responsible parties (PRPs) covered the pits, placed a multi-layered cap over the waste pits, and installed a gas collection system and groundwater monitoring equipment. Through a series of public and community technical advisory group meetings, the community informed EPA of its desire to fold the 22-acre McColl property into a neighboring golf course. EPA, the State of California, the community, Orange County, and the owners of Los Coyotes Country Club worked successfully to transform the site property into three championship holes of golf. The site is now located entirely within the boundaries of the Los Coyotes Country Club. The portion of the golf course built over the site opened in 1998. Routine site operation and maintenance activities continue.
Last updated June 2017

As of December 2018, EPA had data on one on-site business.  EPA did not have further economic details related to this business. For additional information click here.

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Modesto Ground Water Contamination 

The Modesto Ground Water Contamination Superfund site is located about 1.5 miles north of Modesto, California. The site includes a commercial dry cleaning business and other nearby commercial and residential areas located above contaminated groundwater. The dry cleaning facility discharged contaminated wastewater into the sewer system and leaked chemicals into the soil and groundwater. EPA added the site to the National Priorities List (NPL) in 1989. The dry cleaning business replaced the old leaky dry cleaning equipment with new modern equipment. The new equipment stopped contaminants from flowing into the sewer. The dry cleaning business stopped using the chemical contaminant in 2010 and began using a new dry cleaning process. The business paved most of the site to reduce the potential for exposure. Mitigation measures in the dry cleaners and nearby businesses have reduced the threat of contaminated vapors entering buildings. Groundwater cleanup includes a groundwater treatment system and a system to remove vapors from soil. Installed in 2000, the groundwater and soil vapor treatment systems both continue to operate. As of 2016, the soil vapor removal system had removed nearly 3,500 pounds of contamination from soil and nearly 700 pounds of the chemical contaminant mass from groundwater. EPA installed a new groundwater extraction well in 2012. Commercial and residential areas remain in continued use.
Last updated June 2017

As of December 2018, EPA had data on one on-site business. This business employed 6 people and generated an estimated $269,000 in annual sales revenue. For additional information click here.

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Monolithic Memories

The 20-acre Monolithic Memories Superfund site is located in Sunnyvale, California. The site included three buildings – 1165 E. Arques Avenue, 1175 E. Arques Avenue and 1160 Kern Avenue. Monolithic Memories, Inc. (MMI) made semiconductors at the buildings located at 1165 and 1175 E. Arques Avenue from 1970 to 1987. In 1987, MMI merged with Advanced Micro Devices, Inc. (AMD). Starting in 1974, AMD leased the 1160 Kern Avenue building. AMD used the space for product handling and testing, office space, and administration until 2003. In 1982, MMI found volatile organic compounds in soil and groundwater at the site. EPA placed the site on the National Priorities List (NPL) in 1987. Cleanup activities included removing contaminated soil and storage tanks, installing and operating soil vapor extraction and groundwater treatment systems, and preventing vapors from entering buildings. The cleanup made the site’s reuse possible. In 2005, AMD donated the 1165 and 1175 E. Arques Avenue properties to a local charity. The charity later sold the properties to a developer. In 2005, the developer demolished the buildings. In 2014, developers built a sports club/fitness center on the site. Resource Area for Teaching (RAFT) currently owns the 1160 Kern Avenue building. RAFT is a non-profit organization that provides affordable teaching supplies, professional development and mentoring services to education professionals. A vapor intrusion assessment completed by AMD at the 1160 Kern Avenue building under EPA and state oversight showed unacceptable vapor intrusion occurring through restroom floor drains and plumbing, which has been addressed via a variety of mitigation activities.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 35 people and generated an estimated $2,480,000 in annual sales revenue. For additional information click here.

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National Semiconductor Corp. Alternative Energy Reuse

The 60-acre National Semiconductor Corp. Superfund site is located in Santa Clara, California. Starting in 1967, National Semiconductor Corp. made electronic equipment at the site. Site investigations, which began in 1982, found volatile organic compounds in soil and in Santa Clara and Sunnyvale groundwater. Leaks from on-site underground storage tanks, sumps and pipes may have released contaminants to groundwater and soil. EPA added the site to the National Priorities List (NPL) in 1987. To clean up the site, National Semiconductor Corp. removed leaking tanks, sumps and pipes, and treated soil source areas. It also started pumping and treating contaminated groundwater in 1984. Additional cleanup actions included removing and disposing of contaminated soil and performing pilot and full scale remedial actions. These actions included ozone sparging, soil vapor extraction, chemical oxidation and bioremediation. Property owners also placed limits on use of site groundwater. Eleven of the original 12 soil source areas have received regulatory closure. Remediation is ongoing at the final soil source area. Groundwater treatment and monitoring in both Santa Clara and Sunnyvale is ongoing. Efforts to evaluate and address vapor intrusion in buildings over the plume are also underway under EPA and state oversight. All manufacturing stopped at the property by 1999. Texas Instruments took over National Semiconductor Corp. in 2011. Texas Instruments owns most the property. Lennar Commercial bought about 15 acres of the site in 2014 for use as office and commercial space. Texas Instruments uses its retained campus for design and sales offices, research and development laboratories, and support services.
Last updated June 2017

As of December 2018, EPA had data on 18 on-site businesses. These businesses employed 1,761 people and generated an estimated $95,778,552 in annual sales revenue. For additional information click here.

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Newmark Ground Water Contamination

The Newmark Ground Water Contamination Superfund site is located in San Bernardino, California. The site includes two large areas of groundwater contamination (plumes) and the source area. The groundwater plumes are several hundred feet deep; they have not impacted city development. Land uses above the plumes include light industrial, commercial and residential uses. EPA added the site to the National Priorities List (NPL) in 1989 after the state identified contamination. Groundwater treatment for the Newmark Plume started in 1998. Groundwater treatment for the Muscoy Plume started in 2005. Both systems continue to operate. EPA’s final cleanup plan involves treating groundwater to meet beneficial uses for both plumes. EPA is continuing to identify sources of contamination and develop a comprehensive cleanup plan for the source area. All land uses above the plumes remain in continued use.
Last updated June 2017

As of December 2018, EPA had data on 123 on-site businesses. These businesses employed 2,489 people and generated an estimated $617,504,927 in annual sales revenue. For additional information click here.

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Operating Industries, Inc., Landfill Core Infrastructure Reuse

The Operating Industries, Inc. (OII) Landfill Superfund site is located 10 miles east of Los Angeles in Monterey Park, California. The Pomona Freeway divides the 190-acre site into two parcels – the South Parcel and the North Parcel. Landfilling operations at the site began in 1948 and ended in 1984. The site received residential and commercial refuse, liquid wastes, and various hazardous wastes and materials. In the 1980s, EPA took emergency actions to begin stabilizing the site. In 1986, EPA added the site to the National Priorities List (NPL). EPA’s long-term cleanup for the site addresses contaminated groundwater, soil and air. Cleanup actions included covering the landfill, controlling landfill gas and managing chemicals in the water draining from the landfill. Contaminated groundwater outside the landfill area is recovering naturally. A leachate treatment plant collects landfill liquids for treatment. Monitoring and maintenance of the cleanup systems is ongoing. In 2002, parties installed six 70-kilowatt microturbines at the landfill to convert landfill gas into electricity. The methane produced by the landfill provided half of the energy used at the site. The system generated more than 15,000 megawatt hours of electricity, saving the project nearly $21,000 in energy costs each month. The system’s total savings over its seven years of operation was about $1.75 million. Potentially responsible parties are working with a developer and the City of Monterey Park on commercial redevelopment of the site’s North Parcel. Groundbreaking on the retail center commenced in the fall of 2016.
Last updated June 2017

As of December 2018, EPA had data on 2 on-site businesses. These businesses employed 490 people and generated an estimated $49,986,000 in annual sales revenue. For additional information click here.

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Pemaco Maywood Alternative Energy Reuse Athletic Fields Reuse Capped Site Reuse Green Remediation Reuse

Playground at the park on sitePemaco MaywoodThe 4-acre Pemaco Maywood Superfund site is located along the Los Angeles River in Maywood, California. A chemical mixing facility operated on site from the 1940s until 1991. In 1993, a fire destroyed the plant. EPA found hazardous chemicals in soil and groundwater. EPA added the site to the National Priorities List (NPL) in 1999. EPA finished treating the most contaminated soils using electrical resistive heating in 2008. A carbon-based treatment system for soil vapors and groundwater continues to operate. A solar-powered energy system provides supplemental energy to the treatment plant. The 3.4-kilowatt-hour solar energy system produces about 5,600 kilowatt hours annually, offsetting about 3.3 tons of carbon dioxide emissions each year. The City of Maywood and The Trust for Public Land incorporated the site into a community park as part of the Los Angeles River Greenway project. Maywood Riverfront Park opened in May 2008. The park includes soccer fields, basketball courts, a play area, native plant landscaping and picnic areas. The park offers much-needed athletic and recreation facilities in a heavily-populated urban area.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Ralph Gray Trucking Co.

The 23-acre Ralph Gray Trucking Co. Superfund site is located in a residential neighborhood of Westminster, California. During the 1930s, the site was the Murdy Dairy Farm. Beginning in 1936, Ralph Gray collected acid sludge, oil field wastes and oil refinery wastes and disposed of them in four unlined pits at the farm. Ralph Gray abandoned the disposal pits in the late 1930s. The pits remained undisturbed until the construction of 75 homes in the late 1950s. At that point, the development company buried hazardous substances from the pits in two unlined trenches cut through the backyard areas of about 25 of the lots before building the homes. After repeated complaints from residents when black sludge and seep material appeared in their yards, EPA added the site to the Superfund program’s National Priorities List (NPL) in 1992. EPA removal actions included razing and restoration of backyard improvements, such as house additions, swimming pools, decks, landscaping and other structures. Cleanup and restoration contractors razed and reconstructed several houses built directly above waste deposits. The contractors removed visible material and excavated at least five additional feet into the clean soil. After the removal work, EPA restored affected yards and structures. EPA also provided financial compensation to owners of homes demolished as part of the cleanup effort so that owners could rebuild or replace their homes. EPA completed all restoration work 1997. EPA deleted the site from the NPL in 2004.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Rockets, Fireworks, and Flares

The Rockets, Fireworks, and Flares Superfund site, formerly known as the B.F. Goodrich Superfund site, consists of a 160-acre industrial area in Rialto, California and a five-mile-long area of groundwater contamination. In 1942, the U.S. Army used part of the site to store ammunition and weapons. Defense contractors and fireworks manufacturers used the land after World War II. The firms included West Coast Loading Corporation, B.F. Goodrich Corporation, Pyrotronics, Pyro Spectaculars and American Promotional Events. Operators handled perchlorate salts and other hazardous chemicals and disposed of chemical wastes on site. Chemicals seeped into the ground and contaminated the groundwater. The underground water supply is the primary source of drinking water for residents and businesses in Rialto and surrounding communities. The California Regional Water Quality Control Board led initial efforts to address the contamination. EPA added the site to the National Priorities List (NPL) in September 2009 and has overseen construction of the first of two planned groundwater cleanup projects. The Goodrich Corporation, Emhart Industries (a corporate successor to West Coast Loading Corporation), Pyro Spectaculars, American Promotional Events, and others entered agreements with EPA to pay for cleanup at the site. Pyro Spectaculars, Inc. and American Promotional Events still operate at the site.
Last updated June 2017

As of December 2018, EPA had data on 5 on-site businesses. These businesses employed 191 people and generated an estimated $99,481,000 in annual sales revenue. For additional information click here.

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San Fernando Valley (Area 1) Core Infrastructure Reuse

The San Fernando Valley (Area 1) Superfund site (SFV Area 1) is one of four Superfund sites located in the California’s San Fernando Valley. EPA added these sites to the Superfund program’s National Priorities List (NPL) in 1986. The San Fernando Valley groundwater basin provides drinking water to residents of the Cities of Los Angeles, Burbank and Glendale, and the La Crescenta Water District. Contamination of area groundwater resulted from a range of industrial operations. The site covers about 20 square miles, and includes the areas of North Hollywood, Sunland and Burbank. This heavily developed urban area is a mix of residential, commercial and industrial land uses. EPA oversees the cleanup of groundwater contaminated with volatile organic compounds and metals. Two groundwater pump-and-treat systems have operated in the North Hollywood and Burbank areas since 1989 and 1996, respectively.
Last updated June 2017

As of December 2018, EPA had data on 154 on-site businesses. These businesses employed 5,552 people and generated an estimated $1,084,506,333 in annual sales revenue. For additional information click here.

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San Fernando Valley (Area 2)

The San Fernando Valley (Area 2) Superfund site (SFV Area 2) is one of four Superfund sites in California’s San Fernando Valley. It covers about 6,680 acres. The San Fernando Valley groundwater basin provides drinking water to residents in Los Angeles, Burbank and Glendale as well as the La Crescenta Water District. In 1980, several cities in the San Fernando Valley discovered contamination in drinking water wells. The contaminated groundwater is near the Crystal Springs Well Field in the cities of Los Angeles and Glendale. The chemicals found in the wells were used widely by a number of industries, including aerospace and defense manufacturing, machinery degreasing, dry cleaning, and metal plating. EPA placed the site on the National Priorities List (NPL) in 1986. A pump-and-treat system addresses the volatile-organic-compound contamination in groundwater. Remedial designs are underway to help the system capture more contamination. EPA is conducting a vapor intrusion assessment from groundwater across Area 2. In 2004, EPA began studying chromium contamination at the site. EPA set up the Glendale Chromium area in 2007 to address chromium contamination in groundwater. A feasibility study to identify remedial alternatives for chromium is ongoing. Industrial, residential, recreational and commercial areas remain in continued use on site.
Last updated June 2017

As of December 2018, EPA had data on one on-site businesses. This business employed 3 people and generated an estimated $575,000 in annual sales revenue. For additional information click here.

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San Fernando Valley (Area 3)

The San Fernando Valley (Area 3) Superfund site (SFV Area 3) is a delisted Superfund site. SFV Area 3 is one of four San Fernando Valley Superfund sites that EPA added to the Superfund program’s National Priorities List (NPL) in 1986. SFV Area 3 is located in a basin that is hydrologically separate from the other three San Fernando Valley sites. Located in the Verdugo basin east of the Verdugo Mountains, the site covers an area of about 4,400 acres. Land use in the Verdugo Basin is primarily residential along the floor of the valley and undeveloped (open space) in surrounding mountains. A strip of commercial development is present along Foothill Boulevard, and a Y-shaped commercial sector is present in the southern portion of the basin. The basin also contains four scattered agricultural areas. The Verdugo basin supplies water to an unincorporated area of Los Angeles County, known locally as La Crescenta. La Crescenta Water District is responsible for supplying water to residents of the area. After reviewing results of groundwater monitoring conducted from the 1980s until 2002, EPA, with support from the State, determined that Superfund cleanup actions at the site were not necessary. EPA deleted the site from the NPL in 2004.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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San Fernando Valley (Area 4) Core Infrastructure Reuse

The San Fernando Valley (Area 4) Superfund site (SFV Area 4) is one of four Superfund sites in California’s San Fernando Valley. EPA added these sites to the National Priorities List (NPL) in 1986. The San Fernando Valley groundwater basin provides drinking water to residents of the cities of Los Angeles, Burbank and Glendale, and the La Crescenta Water District. Contamination of area groundwater resulted from a range of industrial operations. SFV Area 4 covers about 5,860 acres near the Pollock Well Field in Los Angeles. SFV Area 4 is part of a heavily-developed urban area that includes a mix of residential, commercial and industrial land uses. EPA completed an interim investigation of the Pollock Well Field in April 1994. Because private water-supply wells are prohibited and the Los Angeles Department of Water and Power (LADWP) designed and built a wellhead treatment facility to supply drinking water, EPA determined that further cleanup was not immediately necessary. LADWP’s Pollock Treatment Plant became operational in 1999. EPA is currently conducting a remedial investigation in SFV Area 4. The effort includes installation of new monitoring wells, groundwater sampling and soil gas sampling. Following the investigation, a feasibility study will determine how best to clean up any groundwater contamination.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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San Gabriel Valley (Area 1) Core Infrastructure Reuse

The San Gabriel Valley (Area 1) Superfund site is one of four San Gabriel Valley Superfund sites in Southern California. The San Gabriel Valley Superfund sites include multiple areas of contaminated groundwater in the 170-square-mile San Gabriel Valley. In 1984, EPA listed the four main areas of groundwater contamination in the valley on the Superfund program’s National Priorities List (NPL). The Area 1 site includes about 10 square miles of groundwater contamination underlying portions of the cities of El Monte, Rosemead and Temple City; about 8 square miles of groundwater contamination underlying portions of the cities of South El Monte, El Monte and Rosemead; and about 4 square miles of groundwater contamination in the southernmost part of San Gabriel Valley. In addition to industrial, commercial, residential and open space land uses, portions of the site support recreational uses and flood control. EPA has overseen treatment of groundwater in Area 1 since the early 2000s. EPA continues to oversee the construction of additional groundwater treatment systems. Investigations and studies are also underway, including an effort to identify the sources of contamination. To date, investigators have found soil contamination at nearly 400 individual facilities. Water utilities in the area provide clean water that meets all state and federal drinking water standards.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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San Gabriel Valley (Area 2)

The San Gabriel Valley (Area 2) Superfund site is one of four San Gabriel Valley Superfund sites in Southern California. The San Gabriel Valley Superfund sites include multiple areas of contaminated groundwater in the 170-square-mile San Gabriel Valley. In 1984, EPA listed the four main areas of groundwater contamination in the valley on the National Priorities List (NPL). The Area 2 site (also known as the Baldwin Park Operable Unit) includes groundwater contamination underlying portions of the cities of Azusa, Irwindale, Baldwin Park, West Covina, La Puente and Industry. The site covers about 10 square miles. Land use at the site is largely suburban, with a mix of residential, commercial and industrial development. The site’s cleanup includes the operation of five large groundwater pump-and-treat systems.  The five systems help ensure an adequate supply of clean water to the region by providing treated groundwater to over 100,000 homes and businesses. Groundwater treatment began in 2002. Water utilities in the area provide clean water that meets all state and federal drinking water standards.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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San Gabriel Valley (Area 3)

The San Gabriel Valley (Area 3) Superfund site is one of four San Gabriel Valley Superfund sites in Southern California. The San Gabriel Valley Superfund sites include multiple areas of contaminated groundwater in the 170-square-mile San Gabriel Valley. In 1984, EPA listed the four main areas of groundwater contamination in the valley on the Superfund program’s National Priorities List (NPL). The Area 3 site covers 19 square miles containing regions of groundwater contamination in Los Angeles County. Cities within Area 3 include Alhambra, Rosemead, San Gabriel, San Marino, South Pasadena and Temple City. Land use within the site is mainly commercial and residential, with limited areas of light industry and open space. EPA continues investigating the site and in preparation for a site wide feasibility study. Water utilities in the area provide clean water that meets all state and federal drinking water standards.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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San Gabriel Valley (Area 4)

The San Gabriel Valley (Area 4) Superfund site is one of four San Gabriel Valley Superfund sites in southern California. The San Gabriel Valley Superfund sites include areas of contaminated groundwater in the 170-square-mile San Gabriel Valley. In 1984, EPA placed the four main areas of valley groundwater contamination on the National Priorities List (NPL). The sites include industrial, commercial and residential land areas as well as undeveloped land. The Area 4 site (also known as the Puente Valley Operable Unit) is a 23-square-mile sub-area. It includes the Main San Gabriel Basin and the Puente Basin. The site is located primarily in the cities of Industry and La Puente and in unincorporated parts of Los Angeles County. EPA has planned three groundwater pump-and-treat systems to protect the water supply in the “mouth of the valley” portion of the Puente Valley. The systems are also intended to prevent further contaminant movement. Initial construction of the systems began in 2006. Completion of these systems was delayed until EPA and the implementing parties could dispose of treated groundwater to maximize beneficial use of the water. EPA anticipates the cleanup systems will be in place in 2019. Water utilities in the area provide clean water that meets all state and federal drinking water standards. Most land at the site remains in commercial and industrial use; a small area is in residential use.
Last updated June 2017

As of December 2018, EPA had data on 21 on-site businesses. These businesses employed 164 people and generated an estimated $236,085,000 in annual sales revenue. For additional information click here.

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Selma Treating Co. Capped Site Reuse

The Selma Pressure Treating Company Superfund site is located in Selma, California. A wood treatment company operated at the 18-acre site from 1936 to 1981. The site includes the 4-acre former wood treatment facility and an adjacent vineyard that was used for drainage. Wood treatment activities contaminated soil and groundwater with multiple chemicals, including chromium. EPA placed the site on the National Priorities List (NPL) in 1983. Cleanup began in 1988. Soil cleanup included excavation and stabilization of contaminated soils and materials under a protective vegetative cap and asphalt cap. Groundwater cleanup treated chromium and placed restrictions on groundwater use. Groundwater treatment and monitoring are ongoing. This cleanup supports the restoration of groundwater for nearby agricultural use. The owner of the 4-acre facility currently uses the area for truck maintenance and storage. A waste management company and a recycling company use part of the asphalt cap as a transfer yard. The rest of the capped area is vacant.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Sola Optical USA, Inc.

Sola Optical USA, Inc.Sola Optical USA, Inc.The 35-acre Sola Optical USA, Inc. (Sola Optical) Superfund site is located in Petaluma, California, about 30 miles north of San Francisco. Sola Optical made eyeglass lenses at the site from 1978 to 2001. The facility included a manufacturing building and an office building. In 1982, the State found acetone in an on-site well. Later, Sola Optical reported contaminated soil next to underground solvent storage tanks. In 1985, Sola Optical removed the underground storage tanks and surrounding soil. Sola Optical also reported contamination in shallow groundwater under the site. EPA added the site to the National Priorities List (NPL) in 1990. Sola Optical treated groundwater at the site from 1988 to 1997. In 2007, EPA agreed to allow the groundwater to recover naturally. In 2012, EPA confirmed that the groundwater achieved the cleanup standards. EPA removed the site from the NPL in 2013. At that time, the site was being reused and the buildings were occupied by commercial tenants. In 2000, RNM Cader, LLC, bought about 11 previously-undeveloped acres in the southwest part of the site for development. RNM Cader improved the site in 2005, adding building pads and parking lots. New York Life Investments acquired the partially developed property in 2014, with plans for light industrial use. The 11-acre parcel was redeveloped as the Cader Corporate Center in the fall of 2016. The Center consists of three buildings that provide over 268,000 square feet of light industrial, manufacturing, storage and distribution, and office space. Several businesses –Scott Laboratories, Clover Stornetta Farms, Hydrofarm and Cowgirl Creamery – are part of the Cader Corporate Center.
Last updated June 2017

As of December 2018, EPA had data on 7 on-site businesses. These businesses employed 105 people and generated an estimated $29,207,034 in annual sales revenue. For additional information click here.

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Solvent Service, Inc.

The 3.5-acre Solvent Service, Inc., Superfund site is located in San Jose, California. Solvent Service, Inc., previously recycled waste solvents from nearby industries on site. The waste solvents contaminated soil and groundwater on and off the site. The site is within 1 mile of wells that supply municipal water for 132,000 people. EPA proposed the site to the Superfund program’s National Priorities List (NPL) in 1988. A Resource Conservation and Recovery Act (RCRA) permit was issued in 1989, and the site was dropped from the proposed NPL. Solvent Service began treating contaminated soil in early 1990 and groundwater treatment is ongoing. Currently, Clean Harbors of San Jose, LLC operates a hazardous waste treatment, storage and disposal facility on site.
Last updated February 2016

As of December 2018, EPA had data on one on-site business. This business employed 25 people and generated an estimated $5,900,000 in annual sales revenue. For additional information click here.

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South Bay Asbestos Area Athletic Fields Reuse Capped Site Reuse

Mobile homes on the siteSouth Bay Asbestos AreaThe 550-acre South Bay Asbestos Area site is located in San Jose, California, in the Alviso neighborhood. Parts of the site were dumping areas for over 30 years. Three landfills located within the site boundaries (Santos Landfill, Marshland Landfill and Sainte Claire Corporation Landfill) may have received asbestos waste from an asbestos-cement pipe manufacturing plant that operated from 1953 until 1982. Asbestos was found in the Guadalupe River levee, the ring levee and surface soils around Alviso. Residents reportedly used waste asbestos pipe to drain excess water from their properties before curbs and gutters were installed. In addition, residents may have filled several areas with asbestos-containing soils to raise the elevation of their property and to improve flood protection. The City of San Jose built a levee around the town to control floodwater. The levee material was taken from the Raisch Quarry in southern San Jose and was later found to contain naturally occurring asbestos. EPA placed the site on the National Priorities List (NPL) in 1986. Cleanup included removing the ring levee, removing asbestos debris and soil, paving truck yards that had soil containing asbestos, placing caps over the landfills, and putting land use restrictions in place. After the levee removal, EPA restored nearby wetlands. Site cleanup is complete; long-term maintenance and regular inspections of the landfill covers will continue in perpetuity. Current site reuses includes two business parks. America Center is a 70-acre business campus located on the former Marshland Landfill. The developer has built two six-story office buildings and a 175-room hotel and plans to build two more office buildings and a parking garage. Gold Street Technology Center is located on part of the former Santos Landfill; it provides commercial retail and office space. Other land uses on site include truck yards, wetlands, open space, trails, and volleyball and basketball courts.
Last updated June 2017

As of December 2018, EPA had data on 26 on-site businesses. These businesses employed 1,828 people and generated an estimated $825,254,949 in annual sales revenue. For additional information click here.

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Spectra-Physics, Inc.

The 11.5-acre Spectra-Physics, Inc. Superfund site is located in Mountain View, California, northwest of San Jose. The 1-acre Teledyne Semiconductor Superfund site borders the Spectra-Physics, Inc. site. Contaminated groundwater from both sites combined and migrated north toward San Francisco Bay and now underlies a mixed residential and commercial neighborhood. The owners of Teledyne Semiconductor and Spectra-Physics are jointly managing cleanup of the site. Spectra-Physics made electronic equipment and gas lasers at the site beginning in 1961. Teledyne manufactured semiconductors at their site beginning in 1962. These facilities used a variety of chemicals, primarily volatile organic compounds including trichloroethylene (TCE), which contaminated soil and groundwater. EPA added the sites to the National Priorities List (NPL) in 1991. EPA’s cleanup plan required the removal of contaminated soil vapors and groundwater pumping and treatment. Potentially responsible parties completed the soil cleanup in 1995. Groundwater treatment and investigation and mitigation of vapor intrusion in homes and commercial buildings over the Teledyne/Spectra TCE plume is ongoing. A church and a variety of commercial buildings are now located on the sites.
Last updated June 2017

As of December 2018, EPA had data on 8 on-site businesses. These businesses employed 206 people and generated an estimated $56,525,803 in annual sales revenue. For additional information click here.

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Synertek, Inc. (Building 1)

Sign for Crystal Solar officeSynertek, Inc. (Building 1)The former Synertek Building 1 (Synertek) Superfund site is located in Santa Clara, California. Beginning in 1974, Synertek conducted semiconductor manufacturing operations at the site. Facility operations contaminated soil and groundwater with volatile organic compounds, primarily trichloroethylene (TCE). In 1985, Honeywell, the corporate successor to Synertek, removed leaking tanks, facility equipment and contaminated soils. At that time, it was discovered that on-site and off-site groundwater had become contaminated. A groundwater pump-and-treat system operated from 1987 until 2000. In 2011, additional groundwater treatment using bioremediation accelerated the pace of groundwater cleanup. Under the oversight of EPA and the California Regional Water Quality Control Board, vapor intrusion assessments took place between 2013 and 2014 at the two commercial buildings above the Synertek TCE plume. These assessments showed no evidence of unacceptable vapor intrusion. The on-site building is currently occupied by two tenants – a solar cell manufacturing company and a nonprofit co-working laboratory space. A software development company occupies the off-site building.
Last updated September 2017

As of December 2018, EPA had data on 7 on-site businesses. These businesses employed 33 people and generated an estimated $3,997,000 in annual sales revenue. For additional information click here.

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Teledyne Semiconductor

The 11.5-acre Spectra-Physics, Inc. Superfund site is located in Mountain View, California, northwest of San Jose. The 1-acre Teledyne Semiconductor Superfund site borders the Spectra-Physics, Inc. site. Contaminated groundwater from both sites combined and migrated north toward San Francisco Bay and now underlies a mixed residential and commercial neighborhood. The owners of Teledyne Semiconductor and Spectra-Physics are jointly managing cleanup of the site. Spectra-Physics made electronic equipment and gas lasers at the site beginning in 1961. Teledyne manufactured semiconductors at their site beginning in 1962. These facilities used a variety of chemicals, primarily volatile organic compounds including trichloroethylene (TCE), which contaminated soil and groundwater. EPA added the sites to the National Priorities List (NPL) in 1991. EPA’s cleanup plan required the removal of contaminated soil vapors and groundwater pumping and treatment. Potentially responsible parties completed the soil cleanup in 1995. Groundwater treatment and investigation and mitigation of vapor intrusion in homes and commercial buildings over the Teledyne/Spectra TCE plume is ongoing. A church and a variety of commercial buildings are now located on the sites.
Last updated June 2017

As of December 2018, EPA had data on 3 on-site businesses. These businesses employed 282 people and generated an estimated $66,700,000 in annual sales revenue. For additional information click here.

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TRW Microwave, Inc. (Building 825)

The former TRW Microwave (TRW) Superfund site in Sunnyvale, California, is part of the “Triple Site,” which also includes the AMD 901/902 Thompson Place Superfund site and the Philips Semiconductors Superfund site. The primary activity at the TRW site was assembling and testing microwave components. Facility operations contaminated soil and groundwater with volatile organic compounds, primarily trichloroethylene (TCE). The TRW site, together with the AMD 901/902 and Philips sites, are covered by a 1991 EPA Record of Decision. TRW and its corporate successor, Northrup Grumman Systems Corporation (Northrup Grumman), removed soil contamination and treated contaminated groundwater. A developer bought the site property in 1995 and leased the building to research and development companies until 2001. The building was then remodeled between 2001 and 2003, which included the demolition of the existing structure and construction of a new two-story building. Under the oversight of EPA, Northrup Grumman completed a vapor intrusion assessment at the building, which revealed unacceptable levels of TCE. Mitigation activities were completed prior to occupancy by the current tenant – Apple, Inc., which conducts software/hardware research and development activities. Groundwater treatment and monitoring and vapor intrusion assessments and mitigation activities are ongoing in nearby homes and schools over TRW’s TCE plume, which is commingled with TCE plumes from the nearby AMD 901/902 site and the Philips site.
Last updated June 2017

As of December 2018, EPA had data on one on-site business.  EPA did not have further economic details related to this business. For additional information click here.

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United Heckathorn Co. Capped Site Reuse

The Lauritzen Channel for a dredging contractorUnited Heckathorn Co.The United Heckathorn Superfund site is located on Richmond Harbor in Contra Costa County, California. The industrial area includes active petroleum and shipping terminals. The site includes 5 acres of land (the upland area) and about 15 acres of marine sediments in the Lauritzen Channel and Parr Canal of Richmond Harbor. From 1947 to 1966, companies made, packaged and shipped pesticides from facilities on site. During United Heckathorn's operations, the Bay Area Regional Water Quality Control Board noticed bulk storage of pesticides and solvents, leaking solvent pump lines, spills, and waste releases on site. EPA placed the site on the National Priorities List (NPL) in 1990. Cleanup took place from 1990 to 1999. Activities included excavating contaminated areas, dredging the Lauritzen Channel and Parr Canal, and capping 5 acres of land in the upland area. The Levin-Richmond Terminal Corporation (LRTC) bought the upland area in 1981. LRTC currently operates a marine shipping terminal at the former United Heckathorn facility. LRTC mainly uses the upland area for cargo stockpiling and railroad operations. LRTC and Manson Construction, a dredging contractor, continue to use Lauritzen Channel as a deep-water channel. International-Matex Tank Terminals recently bought property next to the northwest corner of the Lauritzen Channel. Parr Canal is currently unused. Monitoring later found high levels of pesticides remaining in the Lauritzen Channel. Site investigations for this area are currently ongoing and EPA will select a new remedy for the Lauritzen Channel.
Last updated June 2017

As of December 2018, EPA had data on one on-site business.  EPA did not have further economic details related to this business. For additional information click here.

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Waste Disposal, Inc. Capped Site Reuse

The 38-acre Waste Disposal, Inc. Superfund site is located in Santa Fe Springs, California. Between the early 1940s and the mid-1960s, previous businesses used an on-site reservoir to dispose of waste. In 1984 and 1985, testing by the City of Santa Fe Springs determined that waste disposal activities contaminated soil and groundwater with hazardous chemicals. EPA added the site to the Superfund program’s National Priorities List in 1987. Cleanup activities involved capping, removing and treating gases, as well as monitoring and restricting groundwater use. Grass to protect the cap and improve stormwater drainage now covers most of the central reservoir area. EPA worked with state agencies, potentially responsible parties (PRPs), business owners and land owners to allow businesses to continue operating on site during cleanup. They also collaborated to develop a cleanup plan that could allow for commercial or industrial development opportunities in the future. Site PRPs repaved business driveways, parking areas and walkways. They also worked with the nearby high school to address public safety concerns. They built a large backstop behind the school’s baseball and soccer fields to prevent stray balls from entering the site, eliminating the need for students to enter the site to retrieve them. Currently, over 40 commercial and light industrial businesses are located on site. These businesses employ over 160 people. In 2013, these businesses contributed about $9.5 million in local employment income and business sales reached nearly $23 million.
Last updated October 2015

As of December 2018, EPA had data on 35 on-site businesses. These businesses employed 172 people and generated an estimated $383,048,000 in annual sales revenue. For additional information click here.

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Watkins-Johnson Co. (Stewart Division Plant)

Front gate for Aviza Technology, Inc. Watkins-Johnson Co. (Stewart Division Plant)The 43.7-acre Watkins-Johnson Co. (Stewart Division) Superfund site is located in Santa Cruz County, about five miles north of Santa Cruz, California. From 1963 to 1999, Watkins-Johnson made semiconductors at the site. Operations at the Watkins-Johnson facility contaminated the Santa Margarita Aquifer, a major source of groundwater in the area. EPA added the site to the National Priorities List (NPL) in 1990. Manufacturing activities continued until 2011. Soil and groundwater cleanups are complete. A vapor intrusion study is ongoing. Several commercial and industrial businesses are located on site.
Last updated June 2017

As of December 2018, EPA had data on 4 on-site businesses. These businesses employed 50 people and generated an estimated $18,455,000 in annual sales revenue. For additional information click here.

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Western Pacific Railroad Co. Core Infrastructure Reuse

The 90-acre Western Pacific Railroad Co. (WPRR) Superfund site is located outside of Oroville, California. The site began operating as a rail yard in the 1880s. Activities at the site included welding, painting, machining and fueling locomotives. These activities occurred in a 10-acre area known as the Fueling Area. In 1970, WPRR stopped activities and leased the Fueling Area to an independent railcar company until 1991. WPRR, and the next owner, Union Pacific Railroad (UPRR) Co., continued to use some of the site until 1991, when UPRR dismantled or demolished the remaining structures. EPA added the site to the Superfund program’s National Priorities List (NPL) in 1990 because of contaminated on-site groundwater. UPRR installed a groundwater treatment system in 1994, enhanced it with soil vapor extraction in 1997, and removed contaminated soil in 1998. After determining that UPRR had successfully cleaned up the site, EPA deleted the site from the NPL in 2001. Currently, the Fueling Area is inactive, but the rest of the site has a maintenance shop, a small classification yard and an active rail line. UPRR leases a public drinking water well, which is located on the site southwest of the Fueling Area rail line, to California Water Service.
Last updated June 2017

As of December 2018, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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Westinghouse Electric Corp. (Sunnyvale Plant)

Northrop Grumman gate and buildingWestinghouse Electric Corp. (Sunnyvale Plant)The 75-acre Westinghouse Electric Corporation (Sunnyvale Plant) Superfund site is located in Sunnyvale, California. The Westinghouse Electric Corporation used the facility to make electrical transformers in the 1950s. During operations, a leaking storage tank and spills caused groundwater contamination. Site investigations found fuel and other contamination in area groundwater and soil. EPA placed the site on the National Priorities List (NPL) in 1986. Cleanup included the removal or paving of contaminated areas and the removal and treatment of contaminated groundwater. In 1996, Northrop Grumman Systems Corporation bought the site property. The company makes steam generators, marine propulsion systems and missile launching systems for the federal government at the site. The U.S. defense contractor employs nearly 1,000 people. The Iron Man Museum is located within the Northrop Grumman Marine Systems Plant. Additional businesses operate on the former north parking lot area of the site.
Last updated September 2017

As of December 2018, EPA had data on 6 on-site businesses. These businesses employed 1,040 people and generated an estimated $170,912,000 in annual sales revenue. For additional information click here.

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