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ORANGE COUNTY <br />BOARD OF COMMISSIONERS <br />ACTION AGENDA ITEM ABSTRACT <br />Meeting Date: January 24, 2006 <br />Action Agenda , <br />Item No. <br />SUBJECT: Lease/License Renewal Agreement -Alternate Daily Landfill Cover <br />DEPARTMENT: Solid Waste Management <br />PUBLIC HEARING: (Y/N) No <br />ATTACHMENT(S): <br />Proposed Renewal Agreement <br />INFORMATION CONTACT: <br />Gayle Wilson, 968-2885 <br />Pam Jones, 245-2650 <br />PURPOSE: To consider approving the 2-year renewal of a license/lease agreement with <br />Landfill Service Corporation to provide material that, in accordance with State regulations, is <br />sprayed on the working face of the landfill after each day of operation. <br />BACKGROUND: The daily covering of waste is a regulatory requirement of all mixed solid <br />waste landfills permitted by the State of North Carolina. Typically, this requirement is met by a <br />daily application of a minimum of 6" of compacted soil on the top of wastes received each day. <br />Daily cover is required to minimize odors, minimize blowing trash, minimize access by vermin, <br />reduce the likelihood of fires starting or spreading, and to fill voids and stabilize the waste. In <br />some locations, adequate supplies of soil are not available, so alternatives to purchasing off-site <br />soils and hauling them to the facility are sought. More recently, even those facilities with <br />adequate soil supplies are utilizing alternative covers to maximize landfill capacity. Over the <br />years, daily applications of soil take up valuable landfill space. If a material that takes up less <br />space and costs less than the value of the space saved can be substituted for soil, the waste <br />capacity of the landfill is extended and site economics are improved. <br />The Orange County Landfill has been utilizing the POST-SHELL COVER SYSTEM since 1996, <br />following an extensive evaluation of other available alternative cover systems. While a variety <br />of types of alternative daily cover systems are available, the POSI-SHELL system most fully <br />meets the operational and regulatory requirements of Orange County's landfill and has proven <br />to be cost-effective. Orange County was the first landfill in the state to be permitted for this type <br />of alternative cover. POSI-SHELL is a spray-on slurry made from polyester fibers, cement kiln <br />dust, and water. These materials are mixed together in a large machine similar to a hydro- <br />seeding machine, pulled to the working face of the landfill, and spray-applied to a thickness of <br />about '/< inch. The material hardens into a crust. <br />FINANCIAL IMPACT: Continued use of the POSI-SHELL application system will further <br />preserve space in the existing landfill with the ultimate height of the landfill being limited in the