2009-03-17_REPORT - M2008078 (3)

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JOSEPH A. CESARE AND ASSOCIATES, INC., GEOTECHNICAL ENGINEERING CONSULTANTS The laboratory tests included twelve gradation analysis tests. These results are presented in Figures 6 through 17. SUBSURFACE CONDITIONS The test holes indicate the subsoils on the parcel, in general, consist of silty sand, clayey sand or sandy clay overlying sand and gravel with claystone or shale bedrock below. The silty sand was encountered in test holes KN301 and KN312 from the surface to depths ranging from 6 to 10 feet, respectively. The silty sand is described as with silt to silty, slightly moist to moist, light brown in color and visually contains no gravel. In all other test holes sandy clay was encountered at the surface and extended to depths ranging from 2 to 26 feet. The sandy clay is described as with sand to sandy, moist to wet, brown to dark brown in color and visually contains no gravel. Clayey sand was encountered in test holes KN302 and KN306 below the sandy clay and extended to depths of 7 and 13 feet, respectively. The clayey sand is described as with clay to clayey, moist to wet, brown in color and visually contains no gravel. Sand and gravel were encountered from below the silty sand or clay and extended to depths ranging from 19 to 72 feet. The sand and gravel are described as gravelly to sandy, moist to wet, and brown in color. The average gravel content of the twelve gradation analysis tests performed on sand and gravel samples is 40 percent with gravel contents ranging from 19 percent in KN312 to 54 percent in KN307. Shale bedrock was encountered below the sand and gravel in all test holes. The shale bedrock is described as moist, with sand, dark gray to gray in color. The bedrock visually contains no gravel. A more detailed description of the subsoils is shown in Figures 3 through 5. Project No. D07.090 - 06113107 3 7090txt