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NEW TECHNOLOGY TO CLEAN UP CONTAMINATED SOILS IS WORKING AT SUPERFUND SITE IN WINSLOW TOWNSHIP, NEW JERSEY

 NEW YORK, Aug. 26 /PRNewswire/ -- An innovative soil washing treatment facility which began operations in late June at the King of Prussia Technical Corporation (KOP) Superfund Site in Winslow Township, New Jersey is successfully cleaning soils with heavy metal contamination, according to the U.S. Environmental Protection Agency (EPA). It is the first time this technology is being used to clean up a Superfund site in New Jersey, and the first time it has been used on a large-scale in this country. Superfund is the federal EPA program which addresses hazardous waste sites. Senator Frank Lautenberg is visiting the site today to observe the new technology in operation.
 This facility is treating more than 20,000 tons of soils and sludges that were contaminated with heavy metals, including chromium, copper and nickel. Approximately half of that volume has been treated to date. During the operation of the soil washing facility, the cleaned soils are redeposited in approximately their original location. The facility will operate for another three months before being disassembled and removed to be used elsewhere. Once the soil washing is complete, the site will be planted to restore the property to its natural condition.
 The clean up will cost $8 million when completed.
 Acting EPA Regional Administrator William J. Muszynski, who is also visiting the site today, says, "We are pleased that this stage of the cleanup has been reached so quickly, and we are excited about the success of this new technology. We believe it has applications all across the country."
 Soil washing is an on-site water-based process that effectively removes contaminants from soil using particle size separation techniques. It has been shown that contaminants tend to bind to the fine particles contained in soil, and when these fine particles are separated from the soil, the majority of contamination is removed. The coarse particles can then be washed to remove any residual contamination. In general, soil washing treatment most effectively removes contamination from sandy soils, such as those that exist at the KOP site.
 The technology has been used extensively in Europe but has had limited use in the United States. The KOP facility, with a maximum capacity of 25 tons per hour, is considered the largest such unit in the United States.
 Site Background
 EPA issued a Record of Decision (ROD) for the site on September 28, 1990. The major components of the selected remedy include the following:
 --Excavation of lagoon sludges, soils adjacent to the lagoons, and sediments in the swale. Extraction of metal contaminants from these materials utilizing a multi-phase, soil-washing process. Replacement of cleaned materials in approximately their original location.
 --Excavation of buried drums, their contents and visibly contaminated soil and disposal at an off-site location. Additional sampling of residually contaminated soils in the buried drum area to provide the basis for a remedial action decision regarding this soil.
 --Installation of a ground-water pumping, treatment and reinjection system to capture and treat the contaminated ground water and prevent discharge of contaminants to the Great Egg Harbor River.
 --Removal of tankers and their contents for off-site disposal.
 --Additional sampling and analysis of surface waters and sediments of the Great Egg Harbor River to allow a determination on whether further remediation of the river system is required.
 Past Actions
 During 1990 and 1991, EPA conducted the removal of the on-site tankers, as well as the excavation and removal of 200 buried drums. These materials were transported to an off-site disposal facility.
 In April 1991, EPA issued a Unilateral Administrative Order (Order) to the following potentially responsible parties (PRPs):
 Cabot Corporation
 Carpenter Technology Corporation
 Ford Electronics and Refrigeration Corporation
 Johnson Matthey, Inc.
 Ruetgers Nease Chemical Company, Inc.
 This Order required that these companies implement the components of the Record of Decision under the terms of a Remedial Design Work Plan that was approved by EPA in December 1991. An extensive sampling program was undertaken in 1992 to delineate existing soil and groundwater contamination, and to characterize residual contamination in the buried drum area. Surface water, sediment and fish tissue samples were also taken to assess the impact of contamination at the site on the Great Egg Harbor River. EPA is currently reviewing these data to determine what further actions will be taken to address the contaminated soils in the former buried drum area. Additional samples have been taken in 1993 to fully characterize the site's impact on the Great Egg Harbor River.
 In accordance with the Order, the PRPs are conducting all necessary studies, as well as the design of the treatment systems for groundwater and soils. To design the on-site soil washing system, the PRPs have performed lab- and bench-scale treatability studies. The PRP's consultant is Alternative Remedial Technologies (ART), a joint-venture company between Geraghty and Miller, Inc. and a Dutch firm, Heidemij. This firm uses a soil washing technology that has been utilized in The Netherlands for several years.
 In July 1992, following the completion of the lab- and bench-scale treatability studies, a full-scale "demonstration run" was conducted at a full-scale facility that Heidemij operates in the city of Moerdijk, The Netherlands. During the demonstration run, 165 tons of contaminated site soils and sludges were successfully treated. The design of the on- site soil washing system has been completed by ART and approved by EPA. This design was based upon the design of the Moerdijk plant, and modified based upon information gathered during the demonstration run.
 During March 1993, the remedial action for soils began with the excavation and off-site disposal of Lagoon 4. The treatability studies conducted early in 1992 determined that Lagoon 4 contained contaminated material that is not amenable to on-site treatment. Construction of the on-site facility was completed in May. A one-week pilot run was performed on approximately 1,000 tons of contaminated soils. The on- site facility successfully treated this material in accordance with EPA's cleanup levels. Full-scale operation began in June 28th.
 Future Activities
 The operation of the on-site soil washing facility will continue for approximately three months. In addition, the design of the on-site groundwater pump-and-treat system is ongoing and is expected to be completed during 1993. This design will incorporate the data from the extensive on-site groundwater sampling program conducted during 1992, as well as several aquifer tests conducted during 1993. Following completion of this design, the groundwater treatment system will be constructed on site and will operate until the cleanup levels specified in the ROD are achieved.
 Site Description
 The KOP site, approximately 10 acres in size, is located in a rural area within the New Jersey Pinelands National Reserve and adjacent to the State of New Jersey's Winslow Wildlife Refuge. Commercial operations at the site began in the early 1970s, and included processing and disposal of various industrial wastes, mainly spent acids. Contamination at the site originated in several on-site lagoons, an area containing buried sludge and a drum disposal area. Operations at the site ceased in 1975 and the site was abandoned. The site was placed on EPA's National Priorities List in December 1985.
 Directions to KOP
 Take NJ Turnpike to Exit 4, follow signs for Route 73 towards
Atlantic City. Stay on 73 for 20 miles (you will pass through a traffic circle, so make sure you stay on 73). As you approach the 20 mile mark, you will see signs that you are in Winslow Township. At a flashing yellow light, make a right. This is Piney Hollow Road. The site is less than 1 mile on your right (it is fenced). If you see the Johnson Matthey plant, or pass over a stream (actually the "Great" Egg Harbor River), you've gone too far.
 -0- 8/26/93
 /CONTACT: Rich Cahill of Environmental Protection Agency, 212-264-2515/


CO: U.S. Environmental Protection Agency ST: New Jersey IN: ENV SU:

LG -- NY016 -- 6052 08/26/93 09:55 EDT
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Date:Aug 26, 1993
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