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97Gl1§ <br />24035 ButtavilM Road <br />Page 2 <br /> <br />immediately after completion of Iogl~ng. Standard Panetr;~on Te~t aamples wen~ taken at 6 foot <br />intervals. The N-values from thesa tests ranged from 2 to 9 in the upper 30 feet and 10 to 18 at 35 <br />feet. Logs of the borings, showing changes in soil type, are presented on Figures A-1 and A~2. <br />A geologist with our firm logged the borlr4]s with re~pect to rmll type, relative strength, and ground <br />water occurrence. Soil conditions were evaluated, described, and classified in accordance with the <br />classification format described in the amgen Department of Transportation Soil and Rock <br />Classification Manual (ODOT Highway Division, I987), which is based on the Unified Soil <br />Cla~sif/catlon System. <br /> <br />SUBSURFACE CONDITION5 <br /> <br />The borings indicate that tim upper 30 feet of sandy flood dapesits is ordy loose to me[fium dense. <br />No contimmu~ dmse oravel layms were efleoufltered to tile depths ~, such as the lens <br />exposed below the Alton Rm~. Below 30 feet, an older flood dxpu~it with coarse sand and <br />bluefg~ey sa~ slit was encmedXmld. Groundwater wm taerchnd ailove thi~ laver to a level of almut <br />:25 to 29 fe~t deep on the day ~ om' e.qldoretiorla. <br /> <br />mud RECOMMENDATIOI~ <br /> <br />The steel H pil~s should be a minimum of 40 feet long (]riven to 30 fee~ depth at 10 feet center-to- <br />center. The pile size should he e minimum ~ize of HPIOx42. Between the piles, we at,lOOM <br />placement of Hollowcore 4CF8 axl~udm] connrate spen. (4.7 strand), cut to 10 foot lef~jtha ~s <br />lag0ing. The lag~ng .~ould be baekflHed ~ l:~mvel. See attached detail. <br /> <br />CLOS~IG <br /> <br />Our reports pmtaln to the nmtmial teetedjnspected only. I~mf~ ~ here~ is ~ to ~ <br /> <br />please do net hesit~e m e~a~ ~e ~i~. <br />Respectfully su~, ~ <br />CARL~N TE~I~' 'N~~7~~ <br /> . <br />Geotechnical E~i~ ~~~D [~ ~ ~'~.-~? <br /> <br /> <br />