Laserfiche WebLink
more than a few feet thick, and does not comprise a struct- <br /> ural fill in itself . Rather, these areas are more like a <br /> spoils pile. These fills were dumped on very steep slopes <br /> and the foundations were not prepared in any mannner. <br /> Reclamation techniques used in these areas were very <br /> similar to those used in the previous two areas. That is, <br /> the slope was reduced to 1.5: 1 and water was diverted a- <br /> round the test section. The entire area was then seeded and <br /> mulched (Photograph 3). <br /> Conclusions <br /> This particular area was very successfull . The <br /> reclaimed area blended in so well with the natural <br /> surroundings that it would have been impossible to identify <br /> this section if not for the straw bales that were placed on <br /> the crest of the slope in order to divert surface runoff . <br /> There was no evidence of any structural stability or ero <br /> sion problems in this area. This method of handling sliver <br /> fills should remain in the reclamation plan with no <br /> modifications. <br /> Section 4 - Severe erosion areas <br /> Surface erosion areas are very common on fill slopes <br /> where no vegetation has established itself. This particular <br /> test section was riddled with severe rills and gullies, <br /> some of which were several feet wide and three to four feet <br /> deep. <br /> The reclamation of this area included the scarifying of <br /> the slope with a special drag hooked up to a dragline. The <br /> area was then seeded and mulched and the mulch was tacked <br /> down with a plastic net (Photograph 4) . A ten year test of <br /> the success of this vegetation growth is now under way. A <br /> fourth year evaluation of this growth was made in September <br /> of 1967 and is contained in attachment 1 of this report. In <br /> addition to the revegetation of this area, berms were <br /> constructed at the crest of the slope on order to prevent <br /> erosion of the slope. <br /> Conclusions <br /> Although the determination has not been made concerning <br /> the success of the revegetation techniques utilized in this <br /> test section, when this area is compared to a similar <br /> adjacent erosion area, it is readily apparent that this is <br /> a very effective means of controling severe erosion areas. <br /> There appears to be minor sloughing at the lower area of <br /> the vegetation. However, there are no major rills and <br /> gullies evident. If this technique is employed as it was in <br /> this test section, it should adequately control severe <br /> erosion problem areas. <br />