The 40-acre Red Oak City Landfill site is an inactive landfill located within an old limestone quarry in a rural setting. Of the 40 acres, 20 acres were used for disposal. The landfill is bounded on the west by Parkwest Road, now G Avenue, and on the east by the East Nishnabotna River. Quarrying activities at the site were conducted by strip mining from the late 1940s to the early 1960s. The City of Red Oak purchased the site property in 1962 and converted it into a municipal landfill. From 1962 until 1974, municipal waste and industrial waste that included hazardous substances were deposited in the landfill. There was a thin layer of soil covering the landfill and, at some points, waste materials, including 55-gallon drums, were exposed to the surface. The eastern portion of the landfill, adjacent to the East Nishnabotna River, was being eroded as a result of river bank undercutting and surface water runoff. Volatile organic compounds (VOCs) ,including toluene and xylene, and heavy metals; including chromium, lead, and barium; from the landfilling practices have been detected in the soil, ground water, and surface water at low concentrations. EPA conducted negotiations with the Potentially Responsible Parties (PRPs) to implement the remedy pursuant to a Consent Decree. The PRPs included the City of RedOak, local industries, and industries previously located in the community. Negotiations were completedin August, 1996, and in October, 1996 the Consent Decree was lodged. Pursuant to this Consent Decree, the PRPs have completed the following activities. During the Fall of 1997 a landfill cap was installed, with diversion and drainage structures to control the precipitation falling on the landfill. The river bank slope was contoured and revegetated to prevent erosion. Access controls, in the form of fences and signs, were installed, and institutional controls were placed on the site. Ground water monitoring was instituted, and is being carried out semi-annually. A water well survey was completed of the immediate area of the site, showing no ground water users will be directly affected by the site.