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<br />the grades of the paved areas follow the <br />surface of the ground very closely, and the <br />ar3de differential between the pavement and <br />Inlet tops is minimal. Agricultural tilling <br />of the soil is essentially incompatible with <br />the system design. <br /> <br />If discontinuing land use for agricultural <br />purposes is not feasible, we reco~~end that <br />plowing be restricted to those areas shown <br />in Figure 1 and that any drainage-way dis- <br />turbed while moving farm equipment over them <br />be restored immediately at the expense of <br />the leasee. Maximum acreage eligible for <br />agricultural purposes within areas surrounded <br />by airfield paving totals 168 acres. <br /> <br />2. We recommend that grading operations begin <br />at the earliest possible time to restore <br />drainage patterns deteriorated over the <br />years by erosion, sedimentation, and tilling <br />of the soil. Recommended grading sections <br />are shown in Figures 2 and 3. Figure 2 <br />denotes the section reco~~ended for those <br />areas adjacent to existing inlets. The sec- <br />tion in Figure 3 is reco~mended for those <br />areas where inlets do not exist. <br /> <br />150' <br /> <br />varies <br /> <br />varies <br /> <br />Paved Surface-:7 <br /> <br />Existing Ground} <br /> <br />--- l~ to 3% <br />= .........- <br />- <br /> <br />25' <br /> <br />Excavation <br /> <br /> <br /> <br />--- <br /> <br />Existing <br /> <br />FIGURE 2 <br />(Not to scale) <br /> <br />NOTE: For the first ten feet of unpaved surface iw~ediately <br />adjacent to the paved surfac~) it is desirable to <br />maintain a minimum 3% slope. <br /> <br />A-3 <br />