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Design and Operations Plan <br />Western Gravel E & P Waste Disposal Facility <br />3.0 FACILITY DESIGN AND OPERATIONS <br />General facility designs and operations and procedures used regarding E &P solid waste and PCS disposal at <br />the landfill are presented below. Facility design includes double liner, leak detecti on, and leachate collection <br />and removal systems and SWCS. Daily operations will typically include receipt of the E &P and PCS waste, <br />placement in an active landfill cell, and daily cover application. In addition, administrative tasks shall <br />include documentation (e.g. daily waste receipts). <br />3.1 WASTE CHARACTERISTICS <br />E &P solid wastes resulting from energy exploration and production operations and non - exempt PCS will be <br />accepted and disposed at the facility. The majority of waste will include drill cuttings, drilling mud, and <br />PCS. Hazardous wastes as defined in the Regulations will not knowingly be accepted at the facility. Liquid <br />containing soils shall be amended prior to acceptance for disposal or at the facility in a lined cell. Soil <br />amendment activities conducted at the facility are discussed in Section 3.9.7. <br />Facility personnel responsible for waste receipt and disposal in an active cell shall be trained regarding <br />recognition of hazardous waste. In the event that suspect hazardous waste is identified, the facility <br />supervisor shall be notified. The waste shall not be accepted for disposal; however, if dumped, the waste <br />shall be reloaded and removed from the facility by the waste hauler. Prohibition agreements regarding <br />hauling of hazardous waste to the facility shall be established with all commercial haulers dumping at the <br />facility and private users shall certify that their loads do not contain hazardous waste based upon signature on <br />waste load tickets. Signage posted at the facility entrance shall 1 ist prohibited waste. <br />3.2 SITE CAPACITY AND LIFE EXPECTANCY <br />The total useable design space (useable design space is defined here as the total volume between the top of <br />the soil operations layer and the underside of the landfill cap /fmal soil cover) for all 5 cells at build out has <br />been calculated at approximately 467,000 cy and the total useable design space for Cell A has been <br />calculated at 140,000 cy. The total useable design space for Cell A has been calculated using the liner and <br />fmal topographic contours shown on Figures 4 and 7. The total useable design space for the other four future <br />cells have been determined by comparing the estimated foot print of these cells to the actual Cell A footprint <br />and calculated design space. The space available for waste has been calculated at approximately 397,000 cy <br />for all 5 cells at build out and 119,000 cy for Cell A. The waste space volumes have been calculated <br />assuming that 15 percent of the useable design space is occupied by daily and interim soil cover . Life <br />expectancy calculations are provided in Appendix G. <br />A 8.5 year life for the entire facility and a 2.5 year life for Cell A have been estimated, based upon the <br />following assumptions. <br />• Net design space available for waste storage is 397,000 cy. <br />• Net design space available for waste in Cell A is 119,000 cy. <br />• Anticipated rate of waste acceptance is 46,800 cy per year. <br />3.3 SOIL REQUIREMENTS AND AVAILABLITY <br />October 24, 2011 <br />Page 20 of 51 <br />The total estimated volume of earth fill available within the facility for construction of cells a nd fmal soil <br />cover cannot currently be determined because of on -going Phase 1 mining operations and sales of <br />overburden soils and aggregates. Three of the 5 proposed cells will be located within the Phase 1 mining <br />footprint. <br />NWCC, Inc. <br />