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Earth Mechanics, Inc. <br /> Geotechnical & Earthquake Engineering <br /> <br /> Development of p-y Curves for Existing Piles: EM1 will <br />provide recommendations on p-y curves for all existing piles supporting the bridge. If <br />simplified p-y curves are needed (such as these used for WFRAME), WKA ~vill develop <br />these simplified curves using the nonlinear p-y curves provided by us. <br /> <br />Development of t-z and q-u Curves for Existing Piles: EM1 will provide <br />recommendations on t-z and q-u curves for all the piles. WKA can evaluate pile <br />capacities from the provided axial springs. <br /> <br />2. Final Design Phase <br /> <br />Site Investigation: We propose a site investigation program consisting of three hollow- <br />stem auger soil borings; two at the abutments and one in the channel, and laboratory tests. <br />The borings are approximately 60 feet in length. Standard Penetration Test (SPT) <br />blowcounts will be recorded every 5 foot intervals alternating SPT Spoon sampler and <br />modified California sampler. The concrete channel liner will be cored prior to soil boring <br />and will be filled with quick set concrete upon completion. <br /> <br />Logs-of-Test-Boring: We will prepare full size Logs-of-Test-Borings. The format of <br />LOTB follows the Caltrans standard guideline. <br /> <br />Evaluation of Additional Piles: If additional piles are needed, we will provide <br />recommendations on the geotechnical parameters of the pile type chosen for retrofit. <br /> <br />Report Preparation: A report will be prepared documenting all the findings including site <br />investigation, laboratory testing, liquefaction potential, ARS curves, and foundation <br />design parameters. <br /> <br />The following items are not included in our scope of work: <br /> <br />No environmental drilling, if hazardous materials are encountered during the <br />boring, we will halt the operation and notify you for further instruction. <br />Them will be no Caltrans review and approval of our work and report. <br />No pile group stiffness will be provided. <br />Soil stiffness of the embedded pier wall and pile cap will not be provided. <br /> <br />Based on the scope of work described above, a detailed cost breakdown is provided on the <br />attached cost table. If you have any question, please contact me. <br /> <br />Sincerely, <br />EARTH MECHANICS, INC. <br /> <br />17660 Ncwhope Slrcct, Suite E, Fountain Valley, California 92708 Tcl: (714) 751-3826 Fax: (714) 751-3928 <br /> <br /> <br />