COMPLIANCE INFO_1996-2003 - Laserfiche WebLink

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Austin Road Landfill Ex6ion Project ENVIRONMENTAL IMPACT MITIGATION MEASURE LEVEL OF SIGNIFICANCE AFTER MITIGATION contribute to increased peak flows designed to handle the 100-year storm. downstream,or degrade surface water in receiving waters. (SIGNIFICANT) (b) Stormwater runoff from the working face would be collected at the edges of the landfill and routed to the perimeter leachate collection trenches. (c)The timing of the pumped discharge from the detention ponds must not occur with the peak flow rate of Little Johns Creek as this would impact downstream locations by increasing the flood hazard. Telemetry,which monitors the flow in the Creek to determine the peak, should then be used to coordinate the start up of the PUMPS. KA. Uncontrolled erosion from soil (a)The final bridge design shall include LS stockpiles and landfill surfaces,or structural controls to prevent spilled or inadvertent spills of refuse or other tracked sediment from entering the stream substances on-site could contaminate channel, and shall be regularly cleared of surface water. (SIGNIFICANT) accumulated sediment and refuse. Accumulated material shall be properly disposed of in the landfill. (b)Additional measures described in Section III.G,Air Quality,Mitigation Measure G.1,would also minimize dust impacts. K.S. Groundwater contamination would (a) Landfill design includes a separation LS result if the liner and leachate collection between the liner and groundwater that system for the expansion failed. meets all regulatory standards. (SIGNIFICANT) (b) The liner and leachate collection systems for the expansion have been designed to meet or exceed the regulatory requirements. (c) The project includes a leak detection system,a series of secondary collection trenches beneath the liner and directly under the leachate collection trenches. (d)The operator would remove hazardous materials spotted during delivery,thus minimizing the 2otential for leachate 27