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I- 580/Fallon Road Interchange Modification Project <br /> City of Dublin <br /> Additional Scope of Work No. 3 <br /> A. Northbound to Westbound loop This activity will begin with the approval of the <br /> Geometric Approval Drawings (GAD) to completion of the contract plans. This effort <br /> includes additional Layout for the loop, Typical Cross Sections, contour grading, <br /> drainage, signing, striping, electrical including ramp metering, landscaping, erosion <br /> control, and quantities. <br /> (100% allocated to City of Pleasanton) <br /> Cost Increase $53,230. <br /> B. Pavement Rehabilitation of the Interchange This activity includes providing <br /> geotechnical engineering services leading to recommendation and design for pavement <br /> rehabilitation of the existing I- 580/Fallon Road/El Charro Road Interchange, and <br /> incorporating the recommendation to completion of the contract plans. The original <br /> contract scope -of -work did not include any geotechnical or design work on existing <br /> pavement or ramps that are only being widened and not receiving new pavement. As in <br /> the I- 580 /Tassajara Road Interchange Modification project, Caltrans mandated the <br /> existing pavement to be resurfaced due to safety reasons. <br /> (90% allocated to City of Dublin, 10% to City of Pleasanton) <br /> Cost Increase $15,996. <br /> C. Incorporation of DSRSD 30" Welded Steel Pipe Casing Dublin San Ramon Sanitary <br /> District requested a 30" Welded Steel Pipe casing to be installed into the proposed Fallon <br /> Road Overcrossing. This 30" WSP will accommodate a future 24" water line. At the <br /> time of the DSRSD request, the design of the Fallon Road Overcrossing was completed <br /> to a 65% level awaiting for independent check. This activity included re- designing the <br /> structure to accommodate the additional dead weight from the WSP and the 24" pipe <br /> running full. The notice to incorporate the pipeline into the I- 580/Fallon Road project <br /> was given to us on February 2002. An agreement will be needed between City of Dublin <br /> and DSRSD for DSRSD to fully reimburse the City to cover both design and construction <br /> costs. <br /> (100% allocated to City of Dublin) <br /> Cost Increase $16,270. <br /> D. Additional Traffic Study in conjunction with the Northbound to Westbound loop <br /> This activity includes the additional traffic study requested by City of Pleasanton beyond <br /> the level of effort estimated under Amendment No. 1. This additional effort has been <br /> discussed with City of Pleasanton and received verbal approval. <br /> (100% allocated to City of Pleasanton) <br /> Cost Increase $16,044. <br /> P 9E104PSE\ Admia.PUllonPS&E \Scoping- Fecs \P S E'Ar endnicni No 3- 030003.doc <br />