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MIGRATION OF LANDFILL PRODUCTS FROM THE <br /> <br />ANOKA SANITARY LANDFILL LOCATED AT RAMSEY <br /> <br />BACKGROU ND <br /> <br /> The Anoka Sanitary Landfill located at Ramsey began operat- <br /> <br />ing in 1967. The 160-acre-site is currently operated by Waste. <br />Management of Minnesota, Inc., and it is owned by the City of <br />Anoka. Ownership is scheduled to be transferred to the City <br />of Ramsey in October, 1981. <br /> <br /> The future use of the site is public open space or recreational. <br />About 60 to 70 acres of the site will be filled, and the fill will <br />rise about 130 feet above, grade. A lime sludge cap has been ap- <br />plied to the west slope to prevent infiltration of precipitation. <br />Potential leachate formation and-.migration are monitored by five <br />surficial groundwater wells and two.lysimeters. <br /> In 1972 the City of Ramsey approved subdivision of' an area <br />adjacent to the west side ~f.~_he /~ndfil-1; at the present time <br />there are five homes within 150 feet of the landfill property line. <br />A thick 'stand of pine trees on the north and west. sides of the <br />landfill provides a visual barrier between residences and the <br />landfill. <br /> <br /> In 1978 Waste Management of-Minnesota, Inc. instaIled <br /> <br />a gas collection and venting system designed by EMCON Associates <br />(San Jose, CA) on the west side of the landfill to prevent the pos- <br />sible migration of landfill gases beyond the landfill property. <br />The migration of gases is controlled by 15 wells, each 14 to 24 <br />feet deep, connected to a motor/blower/exhaust system housed in <br />the control building (Figure 1). Details of the system are given <br /> <br />in Appendix A. <br /> <br /> <br />