10-23-2002 Council Agenda - Laserfiche WebLink

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Some soil correction work will be required prior to bui..1'- ing construction, to remove the buried organic soils from the building area, It is quite likely that buried organic soils occur within the proposed location of the possible expansion area, If the addition is to be built at some time in the futur, it is strongly recommended that the necessary soil correction work be performed within the addition area at the same time the soil correction work is performed for the primary structure. Thi will alleviate potential future problems if the soil correction work for the addition is conducted after the main structure is built. For construction at this property, it is recommended as follows: A general excavation should be made in the building area plus suitable oversizing to remove all buried organic soils and overlying fill. Within the northerly one -third of the building area the necessary excavation will extend to depths of 6'h to 7 feet below present grade. Ground water infiltration will occu in the lower portions of the cut, and the necessary excavation will have to be conducted using a dragiine. As soon as all unsu t- able organic soil has been removed and an approved natural sane subsoil has been exposed, filling should commence with a minimu time delay, The first portion of fill used within the lowest part of the cut should be relatively clean sand with less than 10% silt content, since this material will be in contact with water. Compaction operations need not commence until the fill s =.xceeds the water level by at least 2 feet, SU TERRA NEA.1"a.._ 1fNIi,ETLtNG XNC. A:POLdt3, MINN.