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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 13-001 3.6 8/29/1997 YES NO NO NO Southeast of Building 16-340, in abandoned testing facility. Asphalt, sage brush, concrete sump. NO NO NO Operations discontinued NO NO D. Mays NO 13-002 3.6 8/29/1997 YES NO NO NO Southeast of Building 16-340, in abandoned testing facility. Asphalt, sage brush, concrete sump. NO NO NO Operations discontinued NO NO D. Mays NO 13-003(a) 8.8 8/29/1997 YES NO NO NO West of Building 16-340. Grass and shrubs. Slopes towards Building 16-340. NO NO NO NO NO D. Mays NO 13-003(b) 8.8 8/29/1997 YES NO NO NO West of Building 16-340. Grass and shrubs. Slopes towards Building 16-340. NO NO NO NO NO D. Mays NO