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g� INDIAN RIVER COUNTY, FLORIDA BOARD MEMORANDUM TO: Joseph A. Baird, County Administrator THROUGH: Christopher R. Mora, P.E., Public Works Director Christopher J. Kafer, Jr., P.E., County Engine Michael D. Nixon, P.E., Roadway Production M nagger FROM: Arjuna Weragoda, P.E., Project Engineer SUBJECT: Civil Engineering and Land Surveying Agreement for CR 510 between 61St Drive and Shore Lane- Amendment No.5 IRC Project No. 0549 DATE: March 5, 2013 DESCRIPTION AND CONDITIONS McMahon and Associates, Inc. is under contract with Indian River County to provide Civil Engineering and Land Surveying Services for CR 510 between 61 st Drive and Shore Lane. On December 18, 2012, the Board of County Commissioners voted to advance the CR 510 widening project in its 5-year Capital Improvement Element. To address this change, staff proposes the attached Amendment No. 5 which includes the following: • Shorten the segment of CR 510 to begin at 55th Avenue instead of 61 st Drive. This change will result in amended plan and profile sheets, cross-section sheets, tabulation sheets, signing and marking sheets, signalization sheets, drainage structures sheets,typical section sheets, landscape and irrigation plans and traffic control plan sheets • Move detention Pond No.7 to a mutually-agreeable location within the Graves Brothers property located on the north side of CR-510 between US1 and FEC Rail Road Tracks. This change will require additional surveying, geotechnical exploration and drainage analysis which will also result in revisions to the drainage report. • The construction plans and specifications for Indian River County Utilities will be updated to reflect the new project limits. Design drawings are 90% completed for the widening of CR-510 from 61 st Drive to Shore Lane, which includes the widening on US Hwy 1. The 100%design drawings for the revised limits will be submitted within six months from notice to proceed. During the development of the 100% construction plans, Indian River County staff and the consultant (McMahon and Associates, Inc.) will coordinate and share information on detention Pond No.7 with Graves Brothers. The contemplated design changes will need to be permitted by St. Johns River Water Management District, Florida Department of Transportation, US Army Corps of Engineers and the Florida East Coast Railway. F:\Public Works\ENGINEERING DIVISION PROJECTS\0549-CR510 61 st DR to Indian Riv Lagoon Shore LA(McMahon)\Admim\Contracts\Contracts& Agenda Items\Agenda's\Amendment No.5 for 03-19-13 BCC.doc 172