1901 E Dyer Rd - Soils Report - Laserfiche WebLink

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Alliance Residence October 18, 2016 J.N.: 2530.00 Page 10 6.1.3 Site Clearing Vegetation, concrete slabs and foundations, underground improvements to be abandoned and deleterious materials should be removed from the site. Onsite disposal systems consisting of septic tank and seepage pits are not anticipated but may be presented at the site. If onsite disposal system were encountered during site development, the septic tank should be completed removed from the site and seepage pits should be properly abandoned in accordance with the requirements established by the government agencies. The project geotechnical consultant should be notified at the appropriate times to provide observation services during clearing operations to verify compliance with the above recommendations. Voids created by clearing and excavation should be left open for observation by the geotechnical consultant. Should any unusual soil conditions or subsurface structures be encountered during site clearing or grading that are not described or anticipated herein, these conditions should be brought to the immediate attention of the project geotechnical consultant for corrective recommendations as needed. Temporary construction equipment (office trailers, power poles, etc.) should be positioned to allow adequate room for clearing and recommended ground preparation to be performed for proposed structures, pavements, and hardscapes. 6.1.4 Ground Preparation All existing fill materials are considered unsuitable for support of the structural improvements and I should be removed within the limits o f new site development to expose competent alluvial soil. In addition to removal and recompaction of existing fill materials, the existing soils should be removed to a minimum depth of 1.5 feet below the bottoms of footings within the limits of amenity buildings. Within the limits of the residential structures using a mat foundation without retail space, no minimum depth of fill is required below the bottom of the mat. Within the limits of structures having retail space and using conventional spread footings, the existing soils should be removed to a minimum depth of 4.5 feet below the bottoms of footings. Within the limits of pavement and free standing retaining walls over 3 feet in height, the existing soils should be removed to a minimum depth of I foot below subgrade or footing. The removals should extend laterally a distance of at least 5 feet beyond the limits of the proposed structures or a 1 to 1 projection down and away from the bottom of the footings, whichever is greater. Removals for pavement and free-standing retaining walls may be limited to the edge of the foundations or pavement where lateral restrictions to removals are present such as property lines. The actual depth of removals should be verified by the geotechnical consultant during site grading. If these removals are restricted due to the presence of existing features such as property lines, additional considerations may be required in the design and construction of site improvements affected by these limitations. ALBUS-KEEFE & ASSOCIATES, INC.