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HomeMy WebLinkAbout10 - Lower Buck Gully Restoration ProjectQ agW PpQr CITY OF NEWPORT BEACH C9�`F00.N`P Cud 2 � Council Staff Report Agenda Item No. August 14, 2012 TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: Public Works Department Stephen G. Badum, Public Works Director 949 - 644 -3311, sbadum @newportbeachca.gov PREPARED BY: Robert Stein, Assistant City Engineer APPROVED: ,U ✓� TITLE: Lower Buck Gully Restoration Project — Completion and Acceptance of Contract No. 3780 ABSTRACT: On August 9, 2011, City Council awarded Contract No. 3780 to ECI Construction, Inc. for an amount of $1,188,558.36 and established a 15 percent construction contingency allowance. Work is now complete and Staff request City Council to accept and close out the contract. RECOMMENDATIONS: 1. Accept the completed work and authorize the City Clerk to file a Notice of Completion. 2. Authorize the City Clerk to release the Labor and Materials Bond 65 days after the Notice of Completion has been recorded in accordance with applicable portions of the Civil Code. 3. Release the Faithful Performance Bond one year after Council acceptance. 4. Approve Budget Amendment No. 13BA- 007 transferring $18,000 from 7014 - 05002002 to Account No. 3170 -80883 for routine landscape maintenance services for FY 2012 -13 for the Lower Buck Gully restoration area. Lower Buck Gully Restoration Project— Completion and Acceptance of Contract No. 3780 August 14, 2012 Page 2 FUNDING REQUIREMENTS: Funds for the construction contract were expended from the following account: Account Description Environmental Contribution General Fund DISCUSSION: Account Number Amount 7255- C5002002 $ 705,000.00 7014- C5002002 558.768.88 $ 11263,768.88 Overall Contract Cost/Time Summary *94 working -day construction period, 120 calendar -day plant establishment and maintenance period The work for this contract included grading of a construction road into the canyon, restoring the streambed near the center of the canyon, constructing rock - filled gabion grade control structures and bendway weirs to guide flows into the center of the canyon, installing subsurface wetland filters for water quality improvements, and re- vegetating the canyon with California native plant materials. Following completion of the hydraulic structures in February, the project design was effectively tested during a large storm in April at which times the creek flows were redirected and contained as intended. The contract has now been completed to the satisfaction of the Public Works Department. A summary of the contract cost is as follows: Original bid amount: Actual cost of bid items constructed: Total change orders: Final contract cost: $ 1,188,558.36 1,237,448.86 26, 320.02 $1,263,768.88 2 Contract Construction Final Cost at Contingency Actual Time Time+ Contract Award Completion Target Contract (Under) E tension Amount Change or Over (days $1,188,558.36 $1,263,768.88 15% L 6.30/o 94 +120* 1 27 *94 working -day construction period, 120 calendar -day plant establishment and maintenance period The work for this contract included grading of a construction road into the canyon, restoring the streambed near the center of the canyon, constructing rock - filled gabion grade control structures and bendway weirs to guide flows into the center of the canyon, installing subsurface wetland filters for water quality improvements, and re- vegetating the canyon with California native plant materials. Following completion of the hydraulic structures in February, the project design was effectively tested during a large storm in April at which times the creek flows were redirected and contained as intended. The contract has now been completed to the satisfaction of the Public Works Department. A summary of the contract cost is as follows: Original bid amount: Actual cost of bid items constructed: Total change orders: Final contract cost: $ 1,188,558.36 1,237,448.86 26, 320.02 $1,263,768.88 2 Lower Buck Gully Restoration Project — Completion and Acceptance of Contract No. 3780 August 14, 2012 Page 3 The final construction contract cost of $1,263,768.88, which includes five change orders (itemized below), was 6.3% over the original bid amount. There were 5 change orders approved as part on the contract. The first two change orders were approved to improve project constructability. Change Orders 3, 4 and 5 involved small changes in the design to improve the performance and aesthetics of the project as well as to improve canyon security. CO # Description Cost 1 Additional backfill and com action to meet revised elevations $ 3,5_37.00 2 Additional vegetation and tree removal/disposal 7,800.00 3 H dro -seed mix change 1,508.29 4 Install additional landscaping material 6,361.51 4 Install chain link fence and gate 3,931.30_ 5 Install additional landscaping material 875.44 5 Install security si na e 438.67 5 Relocate bendway weir rocks 352.62 5 Re -H dro -seed project area 1,515.19 TOTAL _ $26,320.02 Summary of the projected and actual project schedule is as follows: Estimated completion date per July 2011 Schedule May 14, 2012 Project Awarded for Construction August 9, 2012 Contract Completion Date Plus Approved Extensions: June 12, 2012 Actual Completion Date: July 19, 2012 Post construction, there are maintenance and monitoring costs that are worthy of note. Per the conditions of the Coastal Development Permit, the City is required to monitor the health of the native plants installed on the restoration site for five -years and to make recommendations regarding removal of invasive species and installation of new native plants as needed to meet the required benchmarks. RBF Consulting is preparing a proposal for the monitoring work and, if acceptable, staff will propose an amendment to RBF's contract for approval. As recommended, Trugreen Landscape ( Trugreen), the City's contractor, will perform the required "routine" landscaping work at a budget of $18,000 for the first year. This landscaping work will be on -going maintenance. On July 301h, staff met on site with OC Vector Control. Based on the discussions, Trugreen will be given some additional tasks to remove algae in some low velocity areas of the new creek. The excessive algae accumulation was a phenomenon that was Lower Buck Guliy Restoration Project — Completion and Acceptance of Contract No. 3780 August 14, 2012 Page 4 also observed in Morning Canyon immediately after construction. The problem disappeared the following year once the native plants had had time to establish. In response to concerns by a couple property owners, Trugreen will also plant additional mulefat and willow cuttings to better mask some of the exposed rocks. Trugreen is preparing a budget for these additional tasks. It is not expected that this additional work will be required in future years. Project savings will be used to fund the 5 -year monitoring contract amendment, as well as the routine and additional landscaping tasks this fiscal year. Funding for on -going landscape maintenance will need to be addressed in the FY13114 budget. ENVIRONMENTAL REVIEW: The City - prepared Mitigated Negative Declaration for the Lower Buck Gully Restoration Project was adopted by City Council on January 25, 2011. NOTICING: The agenda item has been noticed according to the Brown Act (72 hours in advance of the meeting at which the City Council considers the item). Submitted by: Location Map Budget Amendment ATTACHMENT A �J offk ✓3fyS�. a y `t ,.r 9.inT j H ATTACHMENT B City of Newport Beach BUDGET AMENDMENT 2012 -13 EFFECT ON BUDGETARY FUND BALANCE: Increase Revenue Estimates Increase Expenditure Appropriations AND X Transfer Budget Appropriations SOURCE: from existing budget appropriations from additional estimated revenues from unappropriated fund balance EXPLANATION: NO. BA- 13BA -007 AMOUNT: $18,000.00 Increase in Budgetary Fund Balance Decrease in Budgetary Fund Balance qX No effect on Budgetary Fund Balance This budget amendment is requested to provide for the following: To transfer expenditure appropriations from the Prop 50 Buck Gully Stabilization CIP account to the Parks Contract Services account for routine landscape maintenance services for FY 2012 -13 for the Lower Buck Gully restoration area. ACCOUNTING ENTRY: BUDGETARY FUND BALANCE Fund Account REVENUE ESTIMATES (3601) Fund /Division Account EXPENDITURE APPROPRIA TIONS (3603) Description Description Amount Debit Credit ' Automatic S Signed: Fin cia Approval: Finance D' r-- Signed: Administra'veApproval: CitOAanager Signed: City Council Approval: City Clerk $18,000.00 9 -a -ice Date Date Date Description Division Number 7014 Misc & Studies Account Number C5002002 Prop 50 Buck Gully Stabilization $18,000.00 Division Number 3170 MOD Parks Account Number 80883 Contract Services - Park s /Facililies Division Number Account Number Division Number Account Number ' Automatic S Signed: Fin cia Approval: Finance D' r-- Signed: Administra'veApproval: CitOAanager Signed: City Council Approval: City Clerk $18,000.00 9 -a -ice Date Date Date