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Griffin Really SA, Inc.-Geotechnical Investigation <br />Law/Crandall Project 70131-7-0261.0001 <br />July 8, 1997 <br />Asphalt Concrete Paving <br />Asphalt Concrete Base Course <br />Traffic Use Traffic Index (inches)(inches) <br />Automobile Parking 4.0 3 4 <br />Drives Subject to 5.5 3 10 <br />Light Truck Traffic <br />Drives Subject to 7.0 4 13 <br />Heavy Truck Traffic <br />Portland Cement Concrete Paving <br />Portland Cement <br />Traffic Use Traffic Index Concrete (inches) <br />Automobile Parking 4.0 7 <br />Drives Subject to 5.5 7% <br />Light Truck Traffic <br />Drives Subject to 7.0 8 <br />Heavy Truck Traffic <br />We can determine the recommended paving and base course thicknesses for other Traffic Indices <br />if required. Careful inspection is recommended to verify that the recommended thicknesses or <br />greater are achieved, and that proper construction procedures are followed. <br />The base course should conform to requirements of Section 26 of State of California Department <br />of Transportation Standard Specifications (Caltrans), latest edition, or meet the specifications for <br />untreated base as defined in Section 200-2 of the latest edition of the Standard Specifications for <br />Public Works Construction (Green Book). The base course should be compacted to at least 95%. <br />6.8 GRADING <br />The existing fill soils were not observed and tested during placement and are not considered <br />suitable for support of foundations, paving, or slabs on grade. The existing fill soils should be <br />excavated and replaced as properly compacted fill. All required fill should be uniformly well <br />compacted and observed and tested during placement. The on-site soils can be used in any <br />required fill. If a basement is not planned. the existing basement should be backfilied. However. <br />16