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SR-10-22-2013-3HID City Council Report City of Santa Monica° City Council Meeting: October 22, 2013 Agenda Item: 3 -14 To: Mayor and City Council From: Martin Pastucha, Director of Public Works Subject: Professional Services Agreement Modification for Deputy Inspection Services for Parking Structure 6 Recommended Action Staff recommends that the City Council authorize the City Manager to negotiate and execute a fourth modification to Professional Services Agreement No. 9575 (CCS) in the amount of $45,000 (includes a 10% contingency) with Willdan Geotechnical, a California -based company, to provide deputy inspection services during rebuilding of Parking Structure 6. This would result in a two year amended agreement with a new total amount not to exceed $468,000. Executive Summary On April 24 2012, Council approved a contract with Willdan Geotechnical to provide deputy inspection and material testing services for Parking Structure 6 in an amount not to exceed $285,500. Subsequent contract modifications were necessary due to unforeseen conditions and additional requirements. In order to ensure the opening of the Parking Structure within the current schedule, the contractor has re- sequenced some of the remaining work and increased the amount of work performed on Saturdays. These changes necessitate additional deputy inspection services in an amount not to exceed $45,000. The project is expected to be completed by the end of December 2013. Background On June 30, 2009, Council approved a design -build contract with Morley Construction Company for the demolition and reconstruction of Parking Structure 6. On April 24, 2012, Council approved Professional Service Agreement No. 9575 (CCS) with Willdan Geotechnical to provide deputy inspection and testing services for the reconstruction of Parking Structure 6 in an amount not to exceed $285,500. These services are required to ensure that structural concrete, masonry, steel, welding and bolted elements are constructed to Building Code requirements and specifications. 1 On January 8, 2013, Council approved a modification for $82,500 with Willdan Geotechnical to provide additional deputy inspection services necessary due to a number of unforeseen conditions and additional requirements during construction including modifications to the shoring design and plan check revisions. On August 13, 2013, Council approved an additional amount of $55,000 due to construction delays caused by complications in the first three levels, coordination of the exterior trellis /stair structure and design changes to the exterior fagade. Discussion The demolition and rebuilding of Parking Structure 6 began on March 5, 2012. Due to design changes and unforeseen complexity encountered during construction, the scope of work required for inspection services increased and was approved in previous Council actions. These changes have also led to the contractor re- sequencing some of the remaining work and perform an increased amount of work on Saturdays in order to ensure the project opens on time. Examples of such changes include: • Re- sequencing masonry work over a longer period of time in order to prioritize more critical activities. • Performing small concrete pours on Saturdays. • Having multiple contractors working simultaneously that all require inspection. These changes would result in additional deputy inspections costs but would allow the project to remain on schedule. Funds from savings in the direct owner costs are sufficient to absorb the cost of required additional services without impacting the overall project budget. The project is estimated to be completed by the end of December 2013. 2 Financial Impacts & Budget Actions The modification to be awarded to Willdan Geotechnical is $45,000, for an amended agreement total not to exceed $468,000. Funds are available in the FY 2012 -13 Capital Improvement Program (CIP) in account C014049.589000, Parking Structure 6 Construction. Prepared by: Christopher Dishlip, Civil Engineer roved: Martin Pastucha Director of Public Works Forwarded to Council: 3 Rod Gould City Manager Reference: Amended Agreement No. 9575 (CCS)