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Drainage <br />i <br />51. How often do you anticipate the need to perform maintenance <br />activities (e.g., clear material from runoff surface water <br />conveyances, minor grading,. repair of articulated drains; <br />also problems with runon maintenance and repair of levees, <br />dikes, protective berms)? For example, after major storms, <br />before the rainy season or quarterly. <br />a. Annual maintenance costs ($/yr) 8,400 <br />Security <br />52. What are the estimated annual maintenance costs to <br />repair/replace fencing, gates, locks, signs, and/or other <br />security equipment at the landfill site? <br />Inspection ($/yr ) 300 <br />53. What will be the routine maintenance inspection frequency of <br />the landfill during postclosure (minimum semi-annually)? <br />Quarterly & Annual <br />a. Inspection unit cost $ 500 <br />b. Annual inspection costs during the postclosure care <br />period? <br />($/yr) 2,500 <br />Components that should be inspected include, but are not <br />limited to: <br />o Final cover - erosion damage <br />o Final grading - ponding caused by settlement <br />o Drainage control systems - continuity of articulated <br />drains, sediment choked conduits <br />o Gas collection/control systems <br />o Leachate collection and treatment systems <br />effectiveness, and continuity <br />o Security - fences, gates and signs <br />o Vector and fire control <br />o Monitoring equipment <br />o Litter control <br />W <br />