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C~ area/slide (scarp face) was situated approximately 5 to 7 feet below the outside edge of the roadway/berm. The slide appeared to be approximately 25 to 30 feet in width and was approximately 60 to 75 feet in length. The soils from the failed area appeared to have slid down the natural hillside and overtopped a smaller single track roadway that was located approximately half way between the irrigation ditch and the East Fork of Troublesome Creek. It also appeared that a portion of the embankment fill materials placed in this lower roadway had failed and had slid down to the base of the natural hillside and just above the creek. This lower failure appeared to be associated with the debris/mud flow caused by the upper slide, as well as from water that appeared to have been flowing along the uphill side of the road from another seep located to the south and above the road. The soil profile observed in the upper scarp face of the slide/failed area, that was nearly vertical and approximately 11 feet in height typically consisted of approximately 7 feet of man-made fill materials ~ overlying a 2 foot thick layer of topsoil that was underlain by 2 feet of natural, clayey sands and gravels. The soils profiles exposed in the sides of the failed area, which were also nearly vertical, were similar to the upper scarp face except that the amount/depth of the fill materials decreased from 7 to 0 feet from the top to the bottom of the slide. We hand excavated a small test hole in the center of the failed area and below the scarp face and encountered a small amount of water flowing beneath the failed materials and on top of the undisturbed natural soils. A relatively small mud slide occurred in this area as we were excavating the test hole and the mud flowed down the hill towards the lower road. We also observed the cut slope located above the irrigation ditch in the vicinity of the slide was fairly steep and appeared stable. We were advised that slope failures had not been a problem with the cut slopes in this area. However, rock fall can be a problem along a majority of the ditch. Based on our observations made of the cut slopes located above the ditch both upstream and downstream of the failed area, it appears that the soil conditions exposed in these areas are highly variable and typically range from clayey sand and gravel overburden soils to sandstone and conglomerate bedrock with volcanic intrusions. Numerous bedrock outcroppings were also observed above the cut slopes. It also appeared that a natural drainage, which flows from east to west down the natural hillside, was situated approximately 100 to 150 feet south/downstream of the failed area. A large number of willows and other types of deciduous bushes were ~ observed above and below the irrigation ditch in this natural drainage. We visited the project site a second time on April 28, 2003 and met with Mr. Keck. At the time of this visit, we were advised that the discharge in the irrigation ditch was approximately 40 to 45 cfs. Mr. Keck advised us that he believed that the seeps were now flowing at their maximum rate. We observed that the water appeared to be seeping out of the natural soils that were exposed beneath the topsoil layer in the upper scarp face of the failed area. It did not appear that the seepage was confined to one certain area and all of the natural soils exposed beneath the topsoil layer in the scarp face were wet. We measured the flow rate of the water that was accumulating and flowing through the lower area of the slide. Based on our measurements, it appeared that the flow rate in this area was approximately 5 gallons per minute (gpm). We also observed that a considerable amount of water was flowing over the top of the lower road way approximately 100 feet south-southwest of the portion of the lower road that had previously failed. It Job Number. 03-5547 NWCC, [nc. >~ 2