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EPA SELECTS CLEANUP ACTIONS FOR SUPERFUND SITE IN ROCKLAND COUNTY, N.Y.

EPA SELECTS CLEANUP ACTIONS FOR SUPERFUND SITE IN ROCKLAND COUNTY, N.Y.
 NEW YORK, April 3 /PRNewswire/ -- The U.S. Environmental Protection Agency (EPA) has selected a cleanup remedy for the former Ramapo Landfill Superfund site in the town of Ramapo, N.Y. that will cost between $21 million and $31 million to complete, and will take about three years after the design of the remedy is finalized. Superfund is the federal program that addresses hazardous waste sites.
 In September 1983, the Ramapo Landfill site was placed on the Superfund National Priorities List. Municipal waste was accepted in the landfill until 1984. The town of Ramapo continued to accept construction and demolition debris at the site until 1989. The site is currently being used as a compaction and transfer facility by the town of Ramapo.
 EPA Regional Administrator Constantine Sidamon-Eristoff, who signed the federal documents which authorized the cleanup measures, said, "The New York State Department of Environmental Conservation (NYSDEC) effectively managed all phases of the investigations and studies, as well as enforcement actions and the community participation program related to the site."
 NYSDEC Commissioner Thomas C. Jorling said, "New York State has worked closely with EPA to develop remediation plans for the Ramapo Landfill and numerous other hazardous waste disposal sites across the state. Selection of the remedy for this site is a major milestone and further evidence of the substantial progress that government is making to correct the legacy of hazardous waste disposal in our state."
 The landfill material cannot be excavated and treated effectively, because of the size of the landfill and because there are no on-site "hot spots" that represent the major sources of contamination. When completed, the selected cleanup plan will control the source of contamination and the generation of contaminated leachate, and will treat contaminated groundwater.
 The major components of the selected remedy include:
 -- Installation of a cap on the tops of the landfill using a multi- media system, including layers of fill material, a gas-venting system and an impermeable membrane. The landfill side slopes will be capped using a multi-media system without an impermeable membrane, unless studies indicate that the overall remedy's effectiveness would be significantly reduced by not including an impermeable barrier in the multi-media cap on the sideslopes; then, an impermeable barrier would be included in the cap on some or all of the side slopes of the landfill;
 -- Installation of groundwater extraction wells to supplement the existing leachate collection system;
 -- Collection and diversion of leachate seeps to the leachate collection system for off-site treatment;
 -- Installation of a perimeter drain around the sections of the cap containing the impermeable membrane to collect and divert surface water run-off;
 -- If groundwater pretreatment is needed to comply with the requirements of an off-site treatment facility, construction of a pretreatment facility would be tied into the existing leachate collection and discharge system;
 -- Performance of air monitoring period to, during, and following construction at the site and at groundwater and gas monitoring wells. Landfill gas emissions will be controlled, if necessary;
 -- Imposition of property deed restrictions which will include measures to prevent the installation of drinking water wells at the site, and restrict activities which could affect the integrity of the cap;
 -- Performance of a maintenance and sampling program upon completion of closure activities. The monitoring program will provide data to evaluate the effectiveness of the remedial effort. Additional monitoring points will be established as needed to detect any future movement of site contaminants toward drinking water sources off-site;
 -- Development of a contingency plan for rapid implementation of additional measures to protect nearby residents and users of groundwater, if those measures are determined to be necessary.
 The public comment period on site-related documents and the proposed remedy was held from Feb. 19, 1992 to March 19, 1992. During the public comment period, a public meeting was held in the Ramapo Town Hall, Ramapo, N.Y., on March 3, 1992, to present the site-related documents and the proposed plan.
 Site Description
 THe Ramapo Landfill site, situated on a 96-acre tract about 35 miles northwest of New York City, is reported to have received sludge from a cosmetic company, sludge-like material from a pharmaceutical company, and paint sludges from automobile manufacturers, as well as wastes from other facilities. Unauthorized dumping may have occurred at the site. In 1980, about 50 drums containing an unknown waste were found near the site. Most of the landfill now is covered and graded. The temporary storage area for brush and yard waste appears to be well maintained, and the leachate holding pond is fenced. An existing leachate collection system diverts surface and subsurface leachate from the landfill to the holding pond.
 Enforcement Activities
 Starting in June 1980, the first of four orders on consent concerning the Ramapo Landfill was entered into between the Town of Ramapo and the NYSDEC. The first three orders involved the proper closure of the landfill portion of the site.
 On Feb. 1, 1988, the town entered into its fourth and current order on consent with NYSDEC. This order required that the town perform an investigation into the extent and nature of contamination and identify cleanup options. Seventy-five percent of the funding for this work was provided by NYSDEC through the State's Environmental Quality Bond Act of 1986. The order also required the town to develop and implement a remedial program for the site, subject to approval from NYSDEC.
 -0- 4/3/92
 /CONTACT: Rich Cahill of the U.S. Environmental Protection Agency, 212-264-2515/ CO: U.S. Environmental Protection Agency ST: New York IN: SU:


TQ-AH -- NY049 -- 4955 04/03/92 15:41 EST
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Date:Apr 3, 1992
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