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NORMA NORTON PROPERTY <br /> Page No. 3 <br /> VI. SOIL PROFILE AND PERCOLATION TESTS <br /> Four test holes were excavated to a depth 10 feet in the areas <br /> of the existing and proposed homesites in order to determine the <br /> soil profile in the general area. For approximate location of the <br /> test holes (PT) see the Parcel Map in the Appendix. The soil <br /> profile holes were logged by an engineer and a description of the <br /> soils encountered in each hole is contained in the Appendix. <br /> Generally the surface soils consisted of a medium dense silty fine <br /> sand. In two of the test holes "hardpan" was encountered at a <br /> depth of 3 to 4 feet. The surface soils were underlaid by various <br /> strata of fine to medium sand, sandy silt, silty clay, and medium <br /> to coarse sand. For a more detailed description of the soils <br /> encountered see the log of test holes. <br /> Shallow (36" deep) percolation tests were performed at each of <br /> the test hole locations. An 8 inch diameter hole was excavated and <br /> 2 inches of gravel was placed in the bottom of each hole. A 3 inch <br /> diameter perforated pipe was then placed and backfilled with <br /> gravel. Each of the tests holes were filled with water 24 hours <br /> prior to running the tests. The last half hour of the tests <br /> readings were witnessed by a county health official and the test <br /> data obtained is enclosed in the appendix. The percolation rates <br /> 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 /> Tgst No. Hole Hole (in. ) Pprc lation Rate (minfin) <br /> PT-1 8 36 11 <br /> PT-2 8 36 39 <br /> PT-3 8 36 59 <br /> PT-4 8 36 20 <br /> VII CONCLUSION <br /> Based on the results of the percolation tests, the soil <br /> profile, and the performance of the septic systems in the area, it <br /> is our opinion that the existing and proposed homesites resulting <br /> from the proposed parcel split should be suitable for use of on <br /> site sewage disposal system. Recommended systems should include <br /> t o�aso� <br /> s � <br /> s +� <br /> a � <br /> 1�$oc. <br />