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<br /> . The distressed pavement includes areas of alligator cracking, raveling, rutting and potholes. <br /> Alligator cracking is caused from a eombination of repeated traffic loading of heavy vehicles, <br /> unstable base, poor base drainage, and brittle asphalt mix. Raveling is caused by heavy vehicle <br /> traffic, stripping under the action of water and brittle pavement. Rutting is caused by truck traffic <br /> which exceeds the structural strength of the pavement, poorly compacted subgrade, and wheel <br /> traffic in 10C>l1i7ed areas over unstable pavement. All of these distresses found on Dunlap Street <br /> indicate that the pavement has major structural distress. <br /> Stonn water runoff eurrently drains toward intersections at either end of the street, where catch <br /> basins and small diameter stonn sewer is located. It appears that street grades are adequate to <br /> drain the roadway. The lack of curb has allowed some rutting along the roadway edges, which <br /> hold small "bird baths' of water. The roadway also receives stonn water runoff from the 13 hard- <br /> surfaced driveways which connect to Dunlap Street. <br /> . <br /> City maintenance forces have spent considerable time, effort and expense in repairing the existing <br /> surface. Additional bituminous surfacing has been placed to fill potholes along portions of the <br /> roadway. Unfortunately, maintenance funds spent on the roadway in its present condition will not <br /> offset the costs necessary to repair or reconstruct the roadway. <br /> Soil borings were taken by an independent testing firm ~ determine the type and suitability of the <br /> existing sub grade soils and to detennine the thickness of the existing bituminous. The location of <br /> these soil borings is shown by Exhibit 2. The existing pavement surface varied from 2 to 5 inches <br /> of bituminous material. As expected, the soils were found to be a mixture of clays and silt which <br /> retain water and are very susceptible to frost heaving. The soils are varied to the extent that some <br /> areas retain water while others are free-draining. Reconstruction of the roadway should include <br /> subcutting of 2 to 3 feet of the existing material and replacement with a granular material. In <br /> . <br /> 3 <br /> ---- <br />