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PRS Erosion Matrix Score Assessment Date Structure Mesa Top Bench Canyon Floor Channel Topography Explanation Ground Explanation Slope Explanation Runoff Evidence Channelized Channel Description Runoff Wetland Runoff Other Terminus Explanation Runoff Explanation Structure Run-On Structure Explanation NPDES Run-On NPDES Explanation Natural Run-On Natural Run-On Explanation ESH-18 Representative BMP Prescription BMP Description Not BMPs Sediment Comments 61-002 10.6 10/15/1997 YES NO NO NO Inside county landfill, south of Los Alamos Canyon. Area covered with asphalt and gravel. NO NO YES Run-off from asphalt storage pad to the north. NO NO T. Lemke NO Area covered with asphalt.