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77-626 <br />Robert 11. Mason, Inc. -2- February 6, 1978 <br />The soil strata encountered in the boring and results of <br />groundwater observations are shown on the attached Log of <br />Boring sheet. <br />The boring was probed for the presence of groundwater imme- <br />diately upon its completion and again the next day. The <br />presence of groundwater was not observed in the boring <br />during the period of observation. <br />RESULTS: <br />The soil boring encountered 2 feet of dark brown sandy clay <br />topsoil which was frozen to a depth of two feet. From <br />beneath the topsoil to the termination depth of the boring <br />at 20 feet, brown sandy clay till with a trace of gravel was <br />encountered. <br />The results of the percolation tests indicating the soil <br />absorptivities in minutes per inch (mpi) were measured to be <br />the following: <br />Percolation <br />Surface <br />Soil At <br />Absorptivity <br />Test No. <br />Elevation* <br />Test Depth <br />Rate (mpi) <br />1 <br />97.6 <br />CL-Sandy <br />Clay <br />60 <br />2 <br />98.0 <br />CL-Sandy <br />Clay <br />** <br />3 <br />98.5 <br />CL-Sandy <br />Clay <br />** <br />4 <br />98.5 <br />CL-Sandy <br />Clay <br />80 <br />5 <br />98.0 <br />CL-Sandy <br />Clay <br />240 <br />6 <br />97.8 <br />CL-Sandy <br />Clay <br />** <br />7 <br />96.2 <br />CL-Sandy <br />Clay <br />80 <br />8 <br />97.0 <br />CL-Sandy <br />Clay <br />480 <br />9 <br />96.2 <br />CL-Sandy <br />Clay <br />** <br />10 <br />96.8 <br />CL-Sandy <br />Clay <br />240 <br />11 <br />95.0 <br />CL-Sandy <br />Clay <br />480 <br />12 <br />96.5 <br />CL-Sandy <br />Clay <br />480 <br />13 <br />94.3 <br />CL-Sandy <br />Clay <br />240 <br />14 <br />95.2 <br />CL-Sandy <br />Clay <br />** <br />15 <br />93.3 <br />CL-Sandy <br />Clay <br />120 <br />16 <br />93.0 <br />CL-Sandy <br />Clay <br />** <br />17 <br />92.3 <br />CL-Sandy <br />Clay <br />240 <br />18 <br />92.5 <br />CL-Sandy <br />Clay <br />60 <br />19 <br />96.1 <br />CL-Sandy <br />Clay <br />*** <br />20 <br />02 0 <br />CL-Sandy <br />Clay <br />*** <br />21 <br />97.8 <br />CL-Sandy <br />Clay <br />*** <br />22 <br />99.2 <br />CL-Sandy <br />Clay <br />*** <br />23 <br />97.9 <br />CL-Sandy <br />Clay <br />*** <br />24 <br />99.4 <br />CL-Sandy <br />Clay <br />BRAUR'" <br />ENGINEERING TESTING <br />