SR-08-13-2013-3JCity or
City Council Report
5auta Monica
City Council Meeting: August 19, 2013'
Agenda Item: J
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 third modification to Professional Services Agreement No. 9575 (CCS) in the
amount of $55,000 (includes a 10% contingency) with Willdan Geotechnical, a
California -based company, to provide additional deputy inspection services during the
rebuilding of Parking Structure 6. This would result in a two year amended agreement
with a new total amount not to exceed $423,000.
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. On January 8, 2013, Council approved an additional amount of
$82,500 with Willdan Geotechnical to provide additional deputy inspection services
necessary due to a number of unforeseen conditions and requirements including
modifications to the shoring design and plan check revisions. Additional deputy
inspection services in the amount of $55,000 are necessary 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. The project is expected to be
completed in late 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. These services are required to ensure that structural concrete,
masonry, steel, welding, and bolted elements are constructed to Building Code
requirements and specifications.
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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.
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 has increased. Unforeseen conditions and
design revisions include:
• Complications were encountered during construction of the ground floor deck.
The complexity of the connections between the walls and the deck above
necessitated engineering changes. Consequently, additional detailing and
subsequent inspection were required.
• The reverse direction of the slabs and custom beam forms required additional
detailing and inspections on the second floor deck.
• The cantilevered trellis and exterior stair tie -ins on the third floor deck required
additional detailing and inspection.
• Southern California Edison (SCE) modified project electrical requirements.
Electric service will now be brought in from Broadway just east of Third Street.
The original design called for electric service to originate directly behind the
structure. This new approach requires additional concrete material testing and
inspection.
• Design changes impacting the exterior fagade detail required additional welding
inspections.
These unanticipated conditions and design revisions resulted in additional deputy
inspections costs. 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.
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Financial Impacts & Budget Actions
The agreement modification to be awarded to Willdan Geotechnical is $55,000, for an
amended agreement total not to exceed $423,000. Funds are available in the FY 2013-
14 Capital Improvement Program budget in account C014049.589000, Parking
Structure 6 Construction.
Prepared by: Christopher Dishlip, Civil Engineer
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Forwarded to Council:
Rod Gould
City Manager
Reference:
Agreement No.9575
(CCS)