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TYLININTERNATIONAL <br /> engineers I planners I scientists <br /> June 17, 2013 <br /> Mr. Ed Evangelista <br /> City of Pleasanton <br /> 200 Old Bernal Avenue <br /> Pleasanton, CA 94566 <br /> Subject: 1-580/Foothill Interchange Improvement Project <br /> Amendment 6 Request-Design Services During Construction (DSDC) <br /> Pleasanton PSA: 10-663C <br /> TYLI Project Number: 320126.1T <br /> Dear Mr. Evangelista: <br /> Thank you for the opportunity to provide DSDC Services for the 1-580/Foothill nterchange <br /> Improvement Project. <br /> Our proposed Scope of Services is as follows: <br /> Task 7 - Design Services During Construction (DSDC) <br /> 7.1 Provide electronic copies of existing reports and documents <br /> 7.2 Prepare Cross Sections and Slope Stake Notes <br /> 7.3 Respond to Requests for Information (RFI's)from the contractor <br /> 7.4 Review Contractor Submittals as requested by the City. Anticipated submittals include: <br /> a) Retaining Wall Pile Design <br /> b) Concrete Mix Design for retaining walls <br /> 7.5 Provide geotechnical oversight and assistance consisting of the following: <br /> a) Respond to RFI's <br /> b) Review pile/Foundation data as requested to provide any comments <br /> c) Respond to foundation construction questions/issues <br /> d) Respond to subgrade preparation questions/issues and assist with developing <br /> mitigation measures (wet conditions etc) <br /> e)Attend site meeting as requested <br /> f) Consult with Resident Engineer as needed (differing site condition issues, <br /> constructability issues etc) <br /> 7.6 Attend site meetings as requested <br /> 2010 Crow Canyon Place,Suite 350 I San Ramon,California 94583 I T 925.385.3950 I F 925.275.0117 I www.tylln.com <br /> P:1920126-FoothIMAdmIn Se(upaAect9 Scope&FSNNmendment a-DSDCWnendment 6 FoothIN IC DSDC Proposal 6-17-'3.doc <br />