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VI . SOIL PROFILE AND PERCOLATION TESTS A total of 5 test pits were excavated to determine the soil profile . Four of the test pits were excavated at the three proposed home sites and the barn location. A fifth test pit was excavated at a alternate homesite on the northern half of the west parcel . This site was not used because the soils encountered in the test pit were fairly impervious . For approximate location of test pits see the location map contained in the appendix. The location of the test pits was determined by locating off of topographic features , hence accuracy can only be applied to the degree of which this method warrants . Test pits were carried to a depth of 10 feet and excavated with a Cat 416 backhoe equipped with a 24 inch bucket . Visual classification of each soil stratum encountered was made in the field by a civil engineer at the time the test pits were excavated . A description of each soil encountered is contained in the Log of Test Pits , located in the appendix. At Test Pit 41 ( TP-1 ) , an 8 inch diameter by 20 foot deep percolation hole was drilled in addition to the 3 foot deep percolation hole because it was anticipated that the surface soils would be very slow to percolate . The soil profile at this location was logged to the depth of the 20 foot deep hole . The surface soils at TP-2 , 4 , and 5 consisted of a brown silty medium sand. This was underlaid by various compositions of sand and silt . The surface soils at TP-1 and 3 consisted of brown fine sandy silt underlaid by various strata of sandy clay, silty fine sand, fine sand w/silty fine sand lenses , and decomposing siltstone . For a more detailed description of the soil profiles see the Log of Test Pits contained in the appendix. No ground water was encountered in any of the test pits at the time they were excavated. A shallow percolation test was performed at each of the three homesite and barn locations . For test locations see the Location Map in the Appendix. Tests were performed in an 8 inch diameter test hole excavated to a depths of 36 to 42 inches . In addition to the shallow percolation test at location # 1 ( PT-1 ) , a deep pit test was perform concurrently because it was anticipated that the shallow percolation rate would be to high for .lust leach line usage . The test holes were not soaked previously to running the test because of the granular nature of the soils . Readings of all percolation tests were witnessed by a county health official and the test data obtained is enclosed in the appendix. 46�1e �t- ssoc\ 3