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APPENDIX A <br /> FIELO EXPLORATIONS <br /> GENERAL <br /> 7'he subsurlace conditions within thc PoWla Villagc project arca were explared by dtilling ten borings at <br /> thc approximatc locations shown in Figurc 2. 71�e cxploration locations were measured with a cloth tape <br /> relative ro the existing buildings and sitc features shown in Figurc 2. <br /> BORINGS <br /> 7'hc borin�a wete drilled bctwern April 17 and April 19, 2008. Sorings were compkted using <br /> trailcr-mounted,wntinuous-tlight,hollow-slem augcr drilling equipment. Thc borings wcrc continuously <br /> monitored by a geotechnical enginecr from our firtn who examined and classificd the soils encountered, <br /> obtained representative soil samples, observed groundwater conditions, and preparcd a detailed log of <br /> cach boring. <br /> Thc soils cncountcrcd in the borings werc generally samplcd at 5-foot vMical intervals with a 2-inch <br /> outside diamcter split-barrel standard prnetration test (SPT) sampler. The samples were obtained by <br /> driving thc sampler IR inches into the soil wilh a 140•pound automatic hammer free-falling 30 inches. <br /> Thc numbcr of blows mquired for each 6 inches of penetration was recorded. The blow count <br /> ("N-value") of the soil was calculatcd as the number of blows required for the final 12 inchcs of <br /> pcnctration. This resistancc, or N-��aluc, pro��ides a mcasurc of the rclative density of granular soils and <br /> the rclative consistency of cohesive soils. Whcre very dense soil conditions prcclude driving tlie full <br /> 1 R•inches,the penetration resistance for the partial penctration was cntcred on the logs. The blow counts <br /> are shown on thc boring logs at thc rcs�rcctivc samplc dcptl�s. <br /> Soils cncountered in the borings were visually classified in generzl accordance with the classifcation <br /> system describcd in Figure A-1. A key to thc boring log symbols is also presented in Figurc A-1. The <br /> logs of thc borinFs arc prescnted in Figurcs A-2 through A-11. The boring logs are based on our <br /> interpretation of thc field and laboratory data and indicate the various types of soils and poundwatet <br /> condilions encountcrcd. 7'hc logs also indicate thc depths at which these soils or their characteristics <br /> change; although, the change may actually be gradual. I(the change occurred between samples, it was <br /> interprcted. The densitics noted on the boring logs are based on the blow count data obtained in the <br /> borings and judgment bascd on the conditions encounlered. <br /> Observations of groundwater conditions werc made during drilling. The groundwater conditions <br /> encountcrcd during drilling are prcse�ued on the boring logs. Groundwatet conditions observed during <br /> drilling rcpresent a short tcrm condition and may or may not be representative of the long tertn <br /> groundwatcr conditions at thc sita Groundwatcr conditions observcd during drilling should bc <br /> considered approximate. <br /> LABORATORY TESTING <br /> GENERAL <br /> Soil samples ob�aincd from thc cxplorations wcrc transported to our laboratory and examined to con6rtn <br /> or modify field classifications, as wcll as to craluate index properties of thc soil samples. Reprcsentative <br /> samples w�cre selected for laboratory testing consisting oC thc detcm�ination of the moisture content, dry <br /> t-���.�'o.��/�'-nni-nn Pagc.4-1 C�[pENcx�[E�s� <br /> Jurir 4_'OOF <br /> 2c� <br />