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Broward counties . The work to treat the residual DNAPL contamination is being performed using a technique known as chemical oxidation . The treatment process involves the injection of chemicals into the zone of contamination, which produces a chemical reaction to transform the contaminants into nontoxic compounds . 14. In addition to the contaminants that have been released from the FPR Facility, a second source of groundwater contamination is located along the south side of I-595 , and east of the Florida Turnpike. This second source is the location of a former junkyard known as Starts Sales & Salvage that operated at the location from 1965 until 1974. Approximately 1 ,600 junk cars had been stored on the property at one time, with some of the junk cars being dumped into a water-filled borrow pit along the west side of the property. Automobile salvage and service businesses continued to operate at this location until 1984. The property was subsequently acquired by the Florida Department of Transportation (FDOT) in 1984 in advance of the construction of I-595 at this location in the late 1980's . 15 . The three rounds of removal activities described above were performed by the major FPR PRP group. EPA anticipates that the major FPR PRP group will also perform the remaining work that needs to be done at or in connection with the Site. EPA is currently negotiating a Remedial Design/Remedial Action Consent Decree (Consent Decree) with the major FPR PRP group and several other parties to implement a remedy for the Site that is protective of human health and the environment. 16. In performing the response actions, EPA has incurred and will continue to incur response costs at or in connection with the Site. The amount of EPA' s unreimbursed response costs at the Site totaled $5 ,587 ,798 . 14 as of August 19, 2003 . 17 . The City has also undertaken response activities at the Site under an Administrative Order on Consent with EPA dated February 11 , 1994, docket number 93 -34-C (AOC). In complying with the AOC, the City incurred over $ 1 ,224,381 .78 in response costs in designing, constructing, and operating an air stripper system to remove Site-related VOCs now believed to have migrated to the southern portion of the City' s Peele Dixie Wellfield. Under the AOC, the City now owes $83 ,271 . 88 for EPA' s oversight costs . In. addition, the City owes $24,381 .78 for the 6,366 gallons of waste oil it sent to the FPR Facility, as set forth on Appendix C. Under this Consent Order, the City will be reimbursed for some of its over $ 1 ,224,381 .78 in response costs and is relieved of its obligations under Section VIII of the AOC to pay EPA' s $83 ,271 . 88 in oversight costs. The reimbursement to the City under this Consent Order has been reduced to reflect the $24,381 .78 owed by the City for the 6,366 gallons of waste oil it sent to the FPR Facility. 18. Attached hereto as Appendix C and incorporated by reference herein is the De Minimis 6