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III. OBSERVATIONS AND FINDINGS <br /> PHASE I <br /> Most of the sites included in the SL-5 application had already been released from Phase I liability(see <br /> Table 1). <br /> The location of the TC-1 and TC-2 wells was inspected twice. There was no evidence of TC-1,and TC- <br /> 2 was in use as a domestic well. The land was graded so as to blend into the surroundings. <br /> The East Yard Refuse Pile was inspected visually on foot during the SL-5 inspection. Aerial imagery of <br /> the area was also collected in 2019 during the SL-1 inspection, using an Unmanned Aerial Vehicle <br /> (UAV, or"drone"). Details of the UAV survey and analysis are given in the SL-1 Findings document. <br /> No further data was collected or processed with SL-5,but a small section of the same data is shown <br /> below in Figures 1-3,with an additional overlay. <br /> Figure 1 shows the boundary(in bold pink) of the East Yard Refuse Pile to be released with SL-5. The <br /> polygon with pale pink fill to the south and west shows the part of the parcel released with SL-1. The <br /> polygons are overlain on Map 2.05-M6, Sheet I of 7,which shows the approved post-mining <br /> topography. <br /> J <br /> EA <br /> ARC <br /> H us <br /> OF"FicE / /%/ WN <br /> SOft 150fl 250fl <br /> Figure 1 <br /> Figure 2 has the same extent as Figure 1,but the polygons are overlain on the Digital Terrain Model <br /> (DTM),which is symbolized to show the slope of the surface; slopes shallower than 2H:1V are colored <br /> yellow, slopes steeper than 2H:1V are red. Projected contour lines are also shown at 10 foot intervals. <br /> C-1981-022 Page 10 of 16 <br />