Table 10131 Siting Limitations Contained In Subtitle D Of The Rcra As Adopted By The


Siting Limitation

Airports Landfills must be located 10,000 ft from an airport used by turbojet aircraft, 5000 ft from an airport used by piston-type aircraft. Any landfills closer must demonstrate that they do not pose a bird hazard to aircraft.

Flood plains Landfills located within the 100-year floodplain must be designed to not restrict flood flow, reduce the temporary water storage capacity of the floodplain, or result in washout of solid waste, which would pose a hazard to human health and the environment.

Wetlands New landfills cannot locate in wetlands unless the following conditions have been demonstrated:

(1) no practical alternative with less environmental risk exists, (2) violations of other state and local laws do not exist, (3) the unit does not cause or contribute to significant degradation of the wetland, (4) appropriate and practicable steps have been taken to minimize potential adverse impacts, and (5) sufficient information to make a determination is available.

Fault areas New landfill units cannot be sited within 200 ft of a fault line that has had a displacement in

Holocene time (past 10,000 years).

Seismic New landfill units located within a seismic impact zone must demonstrate that all contaminant impact zone structures (liners, leachate collection systems, and surface water control structures) are designed to resist the maximum horizontal acceleration in lithified material (liquid or loose material consolidated into solid rock) for the site.

Unstable areas Landfill units located in unstable areas must demonstrate that the design ensures stability of structural components. The unstable areas include areas that are landslide prone, are in karst geology susceptible to sinkhole formation, and are undermined by subsurface mines. Existing facilities that cannot demonstrate the stability of the structural components must close within five years of the regulation's effective date.

Source: Data from G. Tchobanoglous, H. Theissen, and S. Vigil, 1993, Integrated solid waste management: Engineering principles and management issues (New

York: McGraw-Hill).

cover. Regulations require preventing flow onto the active portion of the landfill (i.e., the working face) during peak discharge from the twenty-five-year storm of twenty-four-hour duration. Collection and control of water running off the active area during the twenty-five-year storm of twenty-four-hour duration is also required. Landfills should have no discharges that violate the Clean Water Act.

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