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Munro Orchard Subdivision <br /> Page 4 <br /> 3.5 feet stratum consisting of a brown sand that ranged from fine to coarse in size was located at <br /> various depths in the brown sandy lean clay. This soil profile stayed reasonably consistant except <br /> for lot 4 in which a clayey gravelly coarse sand was present in lieu of the sand stratum. Overall the <br /> sand stratum tended to have a northwest to southeast trend with an apparent northeasterly dip. For <br /> a more detailed description of the soils encountered see the log of test holes. <br /> A deep percolation test was performed on.each of the 6 lots. A shallow test was performed <br /> on lot I to confirm that the surface soils had a relatively low permeability to oppose the sole use of <br /> leach lines. Test holes were four and one half inches in diameter. Two inches of gravel was placed <br /> in the bottom of each hole, followed by a two inch diameter perforated pipe backfilled with gravel. <br /> Each of the tests holes were filled with water 24 hours prior to running the tests. The last half hour <br /> of the tests readings were witnessed by a county health official and the test data obtained is enclosed <br /> in the appendix. The percolation rates have been adjusted to account for the gravel and pipe backfill. <br /> Calculations for adjustments are on the test data sheets. <br /> A summary of the test results is presented next: <br /> Diameter of Depth of <br /> Test No. Hole in. Hole Percolation Rate (min/in) <br /> PT-1 4.5 17.5 2.4 <br /> PT-la 4.5 3.0 160 <br /> PT-2 4.5 17.0 3.1 <br /> PT-3 4.5 10.0 1.8 <br /> PT-4 4.5 11.5 2.0 <br /> PT-5 4.5 12.5 8.3 <br /> PT-6 4.5 12.5 4.2 <br /> VII CONCLUSION <br /> Based on the results of the percolation tests,the soil profile,and the performance of the septic <br /> systems in the area, it is our opinion that the lots resulting from the propsed subdivision should be <br /> pE RS01 <br /> � N <br /> Z W <br /> p A <br /> r <br /> 4'rSOL� <br />