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17-701.500(2)(h) <br />OPERATION OF GAS, LEACHATE, AND STORMWATER CONTROLS <br />Gas Mang m nt <br />As of October 31,1995, gas management consists of 13 passive vents installed on the <br />closed Segment 1 landfill, and monthly gas monitoring at six locations on the north, <br />west, and south edges of Segment 1. No gas control system is in-place on the active <br />Segment 2 landfill. The gas vents on Segment 1 are flared periodically when odor <br />control is necessary. Existing gas vents should be inspected monthly to determine any <br />damage. Damaged gas vents shall be repaired by replacing pipe or fittings, as <br />necessary. Four of the existing as vents will be modified due to the infill sideslope liner. <br />these four vents will be extended horizontally and turned upward outside of the top <br />anchor berm for the sideslope liner. <br />In the future, as development and closure of additional segments of the landfill produce <br />methane, and non -methane gases, it may be necessary to modify the gas management <br />system to conform to 40 CFR, Parts 51, 52, and 60, which were proposed on July 1,1992 <br />and promulgated in the summer of 1994. The new regulations which require active gas <br />management systems are applicable if the landfill has: <br />• Accepted waste at anytime since November 8,1987, or has additional capacity <br />for future waste deposition; <br />■ A design capacity of 111,000 tons or more; and <br />• A non -methane organic compound (NMOC) emission rate of 167 tons per year or <br />more. <br />A three -tiered methodology is used to evaluate the mass of NMOC from a landfill. The <br />first tier utilizes an Environmental Protection Agency (EPA) generated computer <br />F-8 <br />77:717 74M:174971:. <br />• • _ '.e'�7�v`•t.r� s+7'••S.t .': P} }R•'• 041 <br />rt. <br />...a _ Y •�d <br />