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HomeMy WebLinkAboutAgenda Report - February 15, 2006 E-05AGENDA ITEM EW15 CITY OF LODI COUNCIL COMMUNICATION AGENDA TITLE: Adopt Resolution Authorizing City Managerto Execute a Contract Change Order with Western Water Constructors, Inc., of Santa Rosa, for the Purchase and Installation Slide Gates and Associated Work in the Head Gate Structure at the White Slough Water Pollution Control Facility and Appropriate $275,000 MEETING DATE: February 15,2006 PREPARED BY: Public Works Director RECOMMENDED ACTION: That the City Council adopt a resolution authorizing the City Manager to execute a contract change order with Western Water Constructors, Inc., of Santa Rosa, for the purchase and installation of two new slide gates and associated concrete wall cleaning and repair in the head gate structure at the White Slough Water Pollution Control Facility and appropriate $275,000. BACKGROUND INFORMATION: The gates to be replaced control all flow into the wastewater plant. The existing domestic influent gate has been in service since 1966, and the existing industrialwaste gate has been in service since 1989. The influentwater has deteriorated the existing gates and surrounding concrete wall surfaces. This change order replaces the existing gates and removes the deteriorated concrete wall surface to allow the application of an elastomeric polyurethane sealant to protect the concrete wall surfaces within the headworks. Proper functioning of these gates is necessary for the operation of the facility and most importantly for the Phase 3 improvementswhich are currently in design. The Phase 3 work will include replacement of downstream components in the head works. Influentflows will need to be controlled to allow the Phase 3 work to take place. Replacing the gates now wili allow proper control of the influentwater during Phase 3. Staff proposes to use Western Water Constructors, Inc., to perform the work included in this change order because they are under contract for the Phase 2 improvements, as well as the back-up power generator installation which is scheduled to take place in March 2006. The slide gate work will coincide with the generator installation. The change order cost is $260,670. The appropriation includes contingency funds in case unknown conditions are discovered during the actual installation. The change order costs have been reviewed by City staff and our design engineers, West Yost &Associates. FISCAL IMPACT: This work was included in the cost estimates for the multi -phased White Slough Water Pollution Control Facility Improvements. FUNDING AVAILABLE: 2004 Certificates of Participation proceeds Ruby Pa te, Interim FinanceG{rector i'-et—w. s Richard C. Prima.\Jh Public Works Director Prepared by Gary Wiman, Construction Project Manager RCPIGW/pmf APPROVED: J Blair! ' ity Manager i%PROJECTS1SEWER1W5WPCFIWhiteSlmghWPCFYear ZO041mprovernerTWC_CCO' temWater gales d0c 2/9/2006 RESOLUTION NO. 2006-25 A RESOLUTION OF THE LODI CITY COUNCIL AUTHORIZING THE CITY MANAGER TO EXECUTE CONTRACT CHANGE ORDER FOR THE PURCHASE AND INSTALLATION OF SLIDE GATES AND ASSOCIATED WORK IN THE HEAD GATE STRUCTURE AT THE WHITE SLOUGH WATER POLLUTION CONTROL FACILITY, AND FURTHER APPROPRIATING FUNDS WHEREAS, Lodi Municipal Code §3.20.070 authorizes dispensing with bids for purchases of supplies, services, or equipment when it is in the best interest of the City to do so: and WHEREAS, the existing domestic influent gate has been in service since 1966, and the existing industrial waste gate has been in service since 1989. The influent water has deterioratedthe existing gates and surrounding concrete wall surfaces; and WHEREAS, the gates are in need of replacement because they control all flow into the wastewater plant; and WHEREAS, staff recommends a Contract Change Order with Western Water Constructors, Inc., of Santa Rosa, for the purchase and installation of two new slide gates and associated concrete wall cleaning and repair in the head gate structure at the White Slough Water Pollution Control Facility; and WHEREAS, this change order replaces the existing gates and removes the deteriorated concrete wall surface to allow the application of an elastomeric polyurethane sealant to protect the concrete wall surfaces within the headworks. Proper functioning of these gates is necessary for the operation of the facility and most importantly for the Phase 3 improvements, which are currently in design; and WHEREAS, the Phase 3 work will include replacement of downstream components in the head works. Influent flows will need to be controlled to allow the Phase 3 work to take place. Replacing the gates now will allow proper control of the influentwater during Phase 3; and WHEREAS, staff recommends using Western Water Constructors, Inc. to perform the work included in this change order because it is under contract for the Phase 2 improvements, as well as the back-up power generator installation, which is scheduled to take place in March. The slide gate work will coincide with the generator installation. The change order cost is $260,670: and WHEREAS, staff further recommends appropriating $275,000, which includes contingency funds in case unknown conditions are discovered during the actual installation. The change order costs have been reviewed by City staff and our design engineers, West Yost & Associates. NOW, THEREFORE, BE IT RESOLVED that the Lodi City Council hereby authorizes the City Manager to execute a contract change order with Western Water Constructors, Inc., of Santa Rosa, for the purchase and installation of two new slide gates and associated concrete wall cleaning and repair in the head gate structure at the White Slough Water Pollution Control Facility; and BE IT FURTHER RESOLVEDthat the Lodi City Council does hereby appropriate funds in the amount of $275,000, which includes contingency funds, for the Change Order for the White Slough Water Pollution Control Facility from the 2004 Certificate of Participation. Dated: February 15, 2006 hereby certify that Resolution No. 2006-25 was passed and adopted by the City Council of the City of Lodi in a regular meeting held February 15, 2006, by the following vote: AYES: COUNCIL MEMBERS — Beckman, Hansen, Johnson, Mounce, and Mayor Hitchcock NOES: COUNCIL MEMBERS— None ABSENT: COUNCIL MEMBERS— None ABSTAIN: COUNCIL MEMBERS — None SUSAN J. BLACKSTON City Clerk 2006-25