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J. HKi EINFFLDFR & ASSOCIATLS File No. S-2314-1 <br /> August 15, 1978 <br /> PAGE TWO <br /> on grade, we understand that the living quarters will have <br /> raised floors with an approximate 18-inch plenum space. <br /> The ground surface beneath raised floors would be covered <br /> with a thin layer of gravel. There is also a possibility <br /> that soil berms as high as 4 feet may surround several of <br /> the proposed residences. <br /> According to the tentative parcel map prepared by Diablo <br /> Engineering and Surveying Company, five common storm water . <br /> percolation basins are proposed. Numerous residential streets <br /> are also planned. We have assumed that minimal cuts and fills <br /> on the order of one foot would be required to achieve final <br /> grade. <br /> Additional details of the proposed construction are not <br /> known to our firm at this time. <br /> PURPOSES AND SCOPE OF INVESTIGATION <br /> The purposes of our Soils Investigation have been to <br /> explore the surface and subsurface soil conditions at this site <br /> and provide soil recommendations for use in design. The scope of <br /> our services was outlined in our proposal dated July 11 , 1978. <br /> At your request, we also attempted to obtain temperature <br /> measurements versus depth to assist in planning for the solar <br /> heating and cooling systems . <br /> This report contains the following information: <br /> 1 . Plot Plan showing the location of the test <br /> borings drilled for this investigation. <br /> 2. Logs of Test Borings . <br /> 3 . Summary of laboratory and percolation <br /> test results . <br /> 4 . Recommendations for foundations for <br /> residential units , including recommended <br /> 1 maximum allowable soil bearing pressures . <br /> 7 <br />