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� . <br /> I SFiM1NON bWILSON.IfVC. <br /> 4.6 Pavement Recommeedatio-;s <br /> ( We understand that new driveways and parking r�neas will be constructed within the westem <br /> comer of the site. Desigc►of the pavement section will be pmvid�d by��thers. We uude�stand <br /> ( that all parking azeas and driveway areas will be constructed using flexible pavemrnt such as <br /> asphait concrete(AC)surfacing. For the design of asphalt pavements,we recommend that a <br /> f Califomia Bearing Ratio(CBR)value of 10 be used for the subgrade soils. This value is based <br /> i <br /> on an the assumption that a subgiade of inedium dense, silty, gravel)y sand or compacted <br /> � structural fill will be present after this portion of the site is cleazed and stripped of surface <br /> ' organics. <br /> 1 Frost-susceptibie soils are generally regarded as those soils that have more s.han 3 percent of their <br /> dry weight finer than 0.02 mm. Based on the re�ults of the field and lalwratory tests,most of the <br /> Isoils at the surface on the site would be frosbsuscepNble. A positive way to protect pavement <br /> from damage due to frost action is to provide a pavement structure thickness consisting of , <br /> ' pavement and clean, granular, non-Crost-susceptible bau and subbase at least as thick ac U-�c <br /> � depth of frusl penetration(12 inches). <br /> � 4.7 Review of Plans and Coeatrnction ObservsNon <br /> i We recomrnend that our firm be retained to review those portions of the plans and specifications <br /> that pertain tu earthwork,paverr:enis, and foundalions to amfirm thai thcy are consistent with <br /> our m.commendations. In aJdition,we recommend that our firm be retained un an on-call basis <br /> � to be present during key elemenu of the construction and to review the settlement <br /> instrumentation data. Our constructie�observations should include stripping opetations, fill <br /> Iplacement az�d grading,settlement plat�brm installation, footing und slab subgrade preparation, <br /> and compaction monitor'ng. <br /> 1 <br /> 5.0 LIMITATIONS <br /> IThe analyses, conclusions,and recommendations contained in tlus report are based upon stte <br /> conditions as they presently exist, and further assume that the explorations aze npresentative of <br /> Isubsurface conditions Uvoughout the site; i.e.,the subsudace conditions evetywhere aze not <br /> significanily different from those disclosed by the subsurface expleratiuns. <br /> I If, during construction, subsurface conditions different fmm those encountered in the borings are <br /> Iobserved or appear to be present beneath the excavations,we should be advised at once so that <br /> W8628-OI.rpVwp/sjm W8628-01 <br /> I 9 ,�� <br /> �y <br />