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C Reddish Brown Silty Sand(Sirs <br /> This soil was encountered in the following boring, at the following depths: <br /> Barina Depth <br /> P-1 1.0' --12,0' <br /> P-2 7.0'— 12.0' <br /> Ground Water was not encountered.. <br /> PERCOLATION TESTS <br /> Information on the Percolation Tests and the data from the Percolation Tests will be presented <br /> in a separate report <br /> SEISMICITY <br /> The site is located approximately 45 Kilometers northeast of the Vaca-Kirby Dill-Montezuma <br /> 13ills/e Fault Zone. This fault has a potential to cause moderate strength seismic events. <br /> The site is located at 38.11251 latitude and-121.16871 longitude. We recommend that your <br /> structural engineer use these coordinates to obtain the latest seismic design criteria. The site <br /> class is D for the site. <br /> FIELD INVESTIGATION <br /> Our field investigation included a visual reconnaissance of the existing surface condition, <br /> subsurface exploratory borings and obtaining representative soil samples for laboratory <br /> testing. SubsuAce conditions were explored by drilling two borings which were 15.5 and <br /> 24.4 feet deep,using a NATS B-61 drill rig. The logs of these borings which presents <br /> descriptions and classifications of the soil strata encountered using the Unified Soil <br /> Classifications System has been included in Appendix A A Unified Soil Classification symbol <br /> explanation has been included as Plate 1. The boring locations are shown on Figure 2 <br /> Representative soil samples were obtained from the boring at selected depths for <br /> transportation to our laboratory. The samples recovered consisted of relatively undisturbed <br /> brass liner samples and disturbed bag samples_ The samples are recovered by driving a 2-1/2 <br /> inch and 13/8 inch sampler into the ground. The samplers were driven by repeatedly <br /> dropping a hammer weighting 140 pounds from a height of 30 inches. The number of blows <br /> were recorded and are expressed on the boring logs in a number representing blows per foot. <br /> (3) <br /> J <br />