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W R I E R E N E R G Y L I F E L3 id& RIVERSIDE PUBLIC UTILITIES Board Memorandum PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES DATE: October 5, 2012 ITEM NO: 7 SUBJECT: REHABILITATION OF DETERIORATED VAULTS AND ASSOCIATED EQUIPMENT ON CHICAGO AVENUE BETWEEN SPRUCE STREET AND MARLBOROUGH AVENUE WORK ORDER NO. 1129993 ISSUE: Board of Public Utilities approval is requested for Work Order No. 1121193. RECOMMENDATION: That the Board of Public Utilities approve the estimated capital expenditure of$647,520 for Work Order No. 1121193 to rebuild four deteriorated vaults, one pull box and replace associated equipment. BACKGROUND: Vaults V2805, V2838, V2840 and V2909 were installed in 1978 and 1979 in Chicago Avenue between Spruce Street and Marlborough Avenue,just south of Riverside Public Utilities(RP U)H unter S ubstation. The Asset Management and Inspection Program discovered that these vaults had serious deterioration with heavy cracks and decomposed concrete in the ceiling and walls. These vaults contain critical infrastructure, including one to four 12 kV circuits out of Hunter Substation, local 12 kV distribution cables serving some 32 office and industrial buildings along Chicago Avenue, and switching devices. The scope of the work involves installing new 12 kV distribution infrastructure and installing two pad mounted switches to enable the removal of a deteriorated underground oil switch. This work will enable contractor forces to structurally rebuild these vaults. The pad-mounted equipment will be installed with consideration given to the surrounding esthetics. Engineering was performed by the Engineering Panel and the construction will be performed by Riverside Public Utilities field forces and contractor crews from the Contractors' Panel. FISCAL IMPACT: The total project cost is estimated at$647,520. The breakdown is as follows: Description Amount %of Total Consultant Design—G.0. 165 Consultants' Panel $38,705 6% Contract Construction— Sub-Structures $361,534 56% City Construction of Cabling& Equipment $182,533 28% Contingency, including Change Order Authorization $64,752 10% Total $647,520 100% Sufficient funds are available in the GO 165 Line Rebuilds Account No. 6130000-470623 ($621,619)and Cable Replacement Account No. 6130000.470635($25,901).