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4. Judging from observations of test pits excavated into older levels of <br />the levee and results of compaction tests of compacted fill placed <br />during maintenance work on the levee during reclamation of the <br />gravel pit showed the levee to be densely compacted. The <br />consolidation of the older levels of the levee has occurred. <br />Maintenance of the crest of the levee recently required it be raised <br />through several short reaches up to 2.4 feet. This fill adds little <br />additional Weight to the existing levee. Given the compactness of the <br />levee and the dense soils there should be no noticeable change in <br />freeboard. <br />5. Inspection of the levee and the results of this study shows the levee <br />meets the geotechnioally related FEMA criteria. <br />INVESTIGATION F LEVEE <br />The subsurface profile at the levee was investigated by drilling 9 test holes <br />and drillinglex acv ting 9 test pits during the planning for the maintenance wort for <br />the gravel pit reclamation. The test holes and three of the test pits were drilled from <br />the crest of the levee and the other six test pits were a t the toes of the levee on <br />either side. An additional 3 holes Were drilled for Packer permeability tests and <br />for Failing Head permeability tests. Locations of test holes and test pits used to <br />investigate the levee and its permeability are shown in Fig. 1. <br />The test holes and the holes for permeability testing were advanced using <br />4-inch diameter, continuous flight auger. The 3 test pits in the levee crest were <br />drilled using a 42 -inch diameter auger and ar large caisson drill rig. The 6 test pits <br />at the toes of the levee were excavated usirig a small backhoe. TL /Thompson <br />directed the drilling and excavation of test holes and test pits, logged the <br />subsurface profile, obtained samples, and supervised the field permeability tests. <br />Summary logs of test holes, test pits and the results of field permeability tests are <br />shorn in Figs. 2 through 6. The results of the compaction testing done in the large <br />diameter holes drilled in the levee are summarized in Table 11. <br />Samples obtained from test holes and test pits were visually classified and <br />select samples were subjected to laboratory testing. This testing included <br />gradation analysis, Atterberg Limits, , natural moisture and density, compaction, <br />FLATIRON COMPANIES <br />LEVEE AT DE PE FARM PIS` <br />CTUT 25,385 <br />