2501 W CASINO RD 2016-01-01 MF Import

�_ — r , GEOTECHNICAL ENGINEERiNG STUDY Told Development E�888 � May 8, 1990 Page 3 � is about fourteen 14 feet. Present vegetaticm m�sists of deciduous trees on the wr.st, fruit uees to the north, and brush covering the remainder of the aite. rRubsurface The site was explored by excavating nine test pits at the approximate locations shown nn ;*: � Plate 2. Plcase refer to the Test Pit [.ogs, Plates A2 through A6, for a more detailed �:k description of the conditions eqcountered at each location explored. A description of the " � field expioration methods and laboratory testing program is included in the appendix of this report. The following �s a generalized description of the subsudace conditions encountered. Our test pits generally encountered three to twelve (12) inches of organic topsoil composed , of dufL The topsoil covered two to three feet of wet to saturated red-brown silty sand in a loose rnndition. Ttiese two su�cial soil layers overlie four to six feet of gray, fine to medium silty sand with gravel, a few cobbles, and occasional boulders. The deeper soil is � classified as a dense glacial dll and was in a moist to wet condition at the top of the secdon. Groundwater � The perched seepage level observed while excavating was about two to three feet below the existir�g surface and is shown on the test pit logs. The perched seepage level is not static � and wi11 fluctuate depending on the season, amount of rainfall, surface water runoff, and other factors. Generally, the water level is higher in the wetter winter months (October through May). � DiSC ION ND F p]►•h• T*pAT101V4 � S�Dgtel � Based on the rnnditions found during of our exploration and the results of our analyses, it is our opinion that the proposed structures can be supported on spread and continuous footings bearing on the dense to very dense silry sand and gravel located about two to three � feet below the surface, or on a structural GIl placed on the silry sand. Wet to saturated soil extends from the surface te the top of the till at a depth of about three feet. Water is p,:rched on the surface of die till. Floor slabs az�d pavements should be supported on at � least ane foot of structural fili. Interceptor surface ditches and subsurface drains should be installed on the uphill portion of � the site before construction stans. These, and other geotechnically-related aspects of the project are discussed in more detail in the following sections of this report. I r Earth Conaultants, Inc. I