The URL can be used to link to this page

Home My WebLink About21 - C-3037 - Big Canyon Reservoir Floating Cover & Disinfection ImprovementsCITY OF NEWPORT BEACH CITY COUNCIL STAFF REPORT Agenda Item No. 21 June 22, 2004 TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: Public Works Department Michael J. Sinacori, P.E. 949- 644 -3311 msinacori @city. newport- beach. ca. us SUBJECT: BIG CANYON RESERVOIR FLOATING COVER AND DISINFECTION IMPROVEMENTS — CONTRACT NO. 3037 — STATUS REPORT AND AMENDMENT NO. 1 TO PROFESSIONAL SERVICES AGREEMENT WITH TETRA TECH, INC. RECOMMENDATIONS: 1. Receive and File Status Report. 2. Approve Amendment No. 1 to Professional Services Agreement with Tetra Tech, Inc. for Construction Support Services for an increased fee of $36,000. DISCUSSION: On February 10, 2004 the City approved a construction contract for the covering and disinfection improvements at the Big Canyon Reservoir along with several consultant support service contracts. The work officially began on March 15, 2004 and after three months the project proceeds ahead of schedule and within budget. The following is a summary of expenditures to date: Contractor /Consultant Function Contract Amount Contract Amount Remaining Banshee Construction Contractor $6,114,015') $4,101,686 PBS &J Inspection 229,108 176,728 Hilts Consulting Group Cover Specialist 84,000 47,197 Tetra Tech Shop Drawing Review and Construction Observation 54,500 0 URS I Geotechnical Support 24,480 8,533 (') Includes the Council approved $450,000 contingency and potential bonus payment SUBJECT: Big Canyon Reservoir Floating Cover — Contract No. 3037 — Status Report and Amendment No. 1 to Professional Services Agreement with Tetra Tech, Inc. June 22, 2004 Page 2 Banshee Construction continues at very aggressive pace and plans to be completed approximately 9 -weeks early, resulting in a $135,000 bonus. They have been working 10 hour shifts Monday thru Friday and 8 hours shifts on Saturdays as they begin to install the cover material. If all goes as planned, they should be completed before Thanksgiving. The following is a forecast of expected expenditures with Banshee Construction: Original bid amount: $5,664,015 Approved Change Orders (1.43 %) 81,037 Estimated Future Change Orders 100,000 Estimated Bonus Payment ($3000 per day) 135,000 Final Forecasted Contract Cost $5,980,052 Estimated Remaining Funds at Job Completion: $133,963 During the first three months of the project construction, the consultant support services are within budget with the exception of Tetra Tech. Additional services are requested for Tetra Tech which are detailed in the attached Amendment No 1. Of the requested $36,000 approximately $10,000 is for construction staking which was not included in their original construction support contract. In addition, the Utilities Department staff determined a more cost effective way to install the disinfection piping and controls resulting in overall construction savings and a better final product for long term operations. However, a $7,500 re- design cost was experienced by Tetra Tech for these disinfection system modifications. The requested $36,000 in funds for Amendment No. 1 will be paid from the contingency approved for the project. Environmental Review: A Negative Declaration in accordance with the California Environmental Quality Act (CEQA) was prepared and approved by the City Council on June 27, 1994. An environmental document in accordance with the National Environmental Policy Act (NEPA) was developed by EPA as part of the implementation of the grant program. The NEPA document and associated Finding of No Significant Impact (FONSI) was issued in December 2003. Prepared by: D Submitted by: ;hael J. Sinacoh, P.E. ncipal Civil Engineer Attachments: Change Order Summary Amendment No. 1 /u•�a I , AW / .ate t .n �� BIG CANYON RESERVOIR COVERING AND DISINFECTION IMPROVEMENTS Contract No. 3037 Change Order Summary 06/10/2004 Credit Description & Item No. I Deductions Additions I Change Order Description & Item No. 1. Reduction in curb width. (8,840.00) 2. Reduction in disinfection piping (6,210.00) $15,050.00 1. Addition of red slurry behind curb 3. Cost savings straight batten bars (3,615.36) $4,303.07 2. Upgrade lighting fixtures 4. Delete AC paving bottom of reservoir (23,400.00) $25,200.00 3. Add 1.5" concrete paving 5. Delete AC repair 22,000 sq. ft. (50,000.00) $129,150.00 4. Add 715.5 yards slurry in bottom - 92,065.36 $173,703.07 Total $81,037.71 Change Order No. 1 $2,900.00 5. Additional rebar splicing $6,000.00 6. Wrapping chafer strip around batten $1,457.48 7. Sandblast $1,556.41 8. Flex coupling $3,000.00 9. Additional road grading 6. Delete FRP structure (19,474.00) $14,943.00 10. Disinfection changes (19,474.00) $29,856.89 Subtotal Credit & Change Order Total $10,382.89 Change Order No. No. 2 Grand Change Order Total (6/10/04) $91,420.60 AMENDMENT NO.1 TO PROFESSIONAL SERVICES AGREEMENT WITH TETRA TECH, INC. FOR BIDDING AND CONSTRUCTION SERVICES THIS AMENDMENT NO. 1 TO PROFESSIONAL SERVICES AGREEMENT, entered into this 22nd day of June, 2004, by and between the CITY OF NEWPORT BEACH, a municipal corporation, (hereinafter referred to as "City ") and TETRA TECH, INC., whose address is 16241 Laguna Canyon Road, Suite 200, Irvine, California, 92618, (hereinafter referred to as "Consultant'), is made with reference to the following: RECITALS A. On February 10, 2004, CITY and CONSULTANT entered into a Professional Services Agreement, hereinafter referred to as "Agreement', for bidding and construction phase services for the Big Canyon Reservoir Covering and Disinfection Improvements, hereinafter referred to as 'Project'. This Agreement is scheduled to expire on January 31" of 2005. B. City desires to enter into this Amendment No. 1 to reflect additional services not included in the Agreement and to extend the term of the Agreement to June 30, 2005. C. City desires to compensate Consultant for additional professional services needed for Project. D. City and Consultant mutually desire to amend Agreement, hereinafter referred to as "Amendment No. 1 ", as provided here below. NOW, THEREFORE, the parties hereto agree as follows: 1. Consultant shall be compensated for services performed pursuant to this Amendment No. 1 according to "Exhibit A" dated June 9, 2004, attached hereto. 2. Total additional compensation to Consultant for services performed pursuant to this Amendment No. 1 for all work performed in accordance with this Amendment, including all reimburseable items and subconsultant fees, shall not exceed Thirty -six thousand and 00/100 Dollars ($36,000.00). 3. The term of the Agreement shall be extended to June 30, 2005. 4. Except as expressly modified herein, all other provisions, terms, and covenants set forth in Agreement shall remain unchanged and shall be in full force and effect. IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 1 on the date first above written. APPROVED AS TO FORM: City Attorney for the City of Newport Beach ATTEST: LaVonne Harkless, City Clerk Attachment: Exhibit A CITY OF NEWPORT BEACH, A Municipal Corporation 0 Mayor for the City of Newport Beach TETRA TECH, INC.: In f: \users\pbw \shared\agreements\fy 03- 04\tetra tech -bcr floating cover amendl.doc Exhibit A TETRATECH, INC. Infrastructure Services Group June 9, 2004 Michael J. Sinacori, P.E. Utilities Manager City of Newport Beach 3300 Newport Boulevard Newport Beach, CA 92658 -8915 Reference: Big Canyon Reservoir Floating Cover and Disinfection Facilifies Request for Additional Authorization — Construction Services Dear Mr. Sinacori: As we have been working oil the construction services portion of the project, Tetra Tech, Inc. has provided additional services requested by the City that were beyond the original scope of work. As a result, this has impacted our existing budget. These additional services have included construction stalling, attending weekly meetings instead of the original scope of once per month, as well as redesign. The following is a discussion of the work: performed to date by task: Taslc I. Bidding Assistance — There were three (3) addenda prepared during the bidding phase. The original $6,000 budget for this task was exceeded by $1,865. As a result, we are requesting compensation for this effort. Task 2. Shop Drawings — We have reviewed about 70 shop drawings including resubnlittals. We estimate that we are currently about two thirds completed with the shop drawings on the proj ect and estimate that the $7,450 will be adequate to complete the remainder of the submittal review. Task 3. RFGC /range Orders — We have reviewed approximately 25 RFCs on the project as well as response to telephone and email questions from the contractor. There is currently $1,468 remaining in the budget. This remaining budget does not appear to be adequate to address the remaining RFCs and questions on the project. We estimate that we will need an additional $5,445 for this task. Task 4. Site VisitslMeetings — The original budget included monthly site visits. However, the City had requested that Tetra Tech attend the weekly project meetings. We have already expended our budget for this task. The City indicated that formal meetings will continue to be held every two weeks. As a result, we estimate that will require about 11 more meetings with ail additional budget of $6,300 through the estimated project completion. 16241 Laguna Canyon Road, Suire 200, Irvine, CA 92618 Tel 949.727.7099 Fax 949.727.7097 www.teEl-atech.com TETRATECH, INC. Infrastructure Services Group Mr. Michael Sinnacori June 9, 2004 Page 2 Task 5. Record Draroi.ngs — Some minor work has been done which will apply to the as -built conditions. The remaining budget should be adequate. Task 6. Reinmbursables — There is currently about $400 rennainimg ill this task for printing of final as- builts. Task Z Disinfection S)7stein Redesign — On March 24, 2004, the City had requested some modifications to the design of the disinfection facilities and piping at the Big Canyon Reservoir. The following items summarize the requested changes. The requested budget for this task was $7,500. The work has been completed and provided to the City. • Relocate analyzers from the basement to the upper control room area. Revise layout in the upper level control room for two chlorine analyzers, two ammnonia analyzers, and new control cabinet, existing motorized operator valves, telemretry, etc. • Relocate and revise sample piping and return lines oil main inlet and outlet reservoir piping. • Add electrical junction box for two new sample pumps ill the basement area (sample pumps provided by City). • Delete chlorine /analyzer fiberglass enclosure and block masonry wall on the slope. Relocate analyzers that were in the fiberglass shed to a post mounted 316 enclosure oil the reservoir access road. Return Sample line to go back into existing piping trough into reservoir. Analyzer waste to flow by gravity down the embankment (encased pipe) where it will tie into sewer. • Delete sunup and sump pump in control room basemrent for analyzer waste that was previously going to sewer. Extend existing 4 -inch sewer around the west side of control building to pick up analyzer waste from upper level control rooms and from the drain line corning down the emnban>Imneut. • Relocate the rotouneter panel that was in the fiberglass shed to the disinfection pad (locate panel in the future chlorine dioxide area). From the rotonreter panel, revise the single chlorine solution line with four separate chlorine lines up the reservoir embankment (encased in slurry) and then down the trough to each of the mixers. Provide check valves on each line at the top of reservoir and down near the rot'onneter panel. Task 8. Construction Survey and Staking — The City requested that construction survey and staldng be performed oil items for the reservoir access road, mixers, control panels, etc. Since this was not a task in the original scope of work, we did not have any budget for this task, Consequently the funds Game out of ow, existing contract budget. We are therefore requesting $6,555 for this task as previously billed to the City. Additionally, the construction inspector estimates that an additional one and one -half days of surey /staking will be needed on the project. As a result, we estimate that 54,000 will be needed for that task. Task 9. Concrete Mixer Foundation — This task was beyond the scope of work The Contractor and City had requested that Tetra Tech provide design sketches for the concrete and steel for the mixer foundation pads. This task was approximately 16 hours at a cost of $2,500, which has already been performed and billed to the City. 1* TETRATECH, INC. Infrastructure Services Group Mr. Michael Sinacori June 9, 2004 Page 3 The original scope of work tasks and budget as well as the remaining budget and proposed new budget totals areas follows: Task Description L Bidding Assistance 2. Shop Drawings 3. P.FCs /Change Orders 4. Site Visits/Meetings (Monthly) 5. I:ecord Drawings 6. Icinabursables 7. (new) Disinfection System Redesign 8. (new) Construction Survey mid Staling 9. (new) Concrete Mixer Foundation $ 1,468 Total Original Expended Remaining Total Budget Budget Budget Budget $ 6,000 $ 7,865 -$ 1,865 $ 7,865 $26,000 $18,550 $ 7,450 $26,000 $ 9,000 $ 7,532 $ 1,468 $14,445 $ 8,000 $ 9,835 -$ 1,835 $16,135 $ 4,500 $ 623 $ 3,877 $ 4,500 $ 1,000 $ 600 $ 400 $ 1,000 $ 0 $ 7,500 -$ 7,500 $ 7,500 $ 0 $ 6,555 -$ 6,555 $10,555 $ 0 $ 2.500 -$ 2.500 S 2,500 ,$54,500 $61,560 $ -7,060 $90,500 As a result, we are requesting the following additional budget authorization necessary to complete the construction services for the project: Task 1 Bidding Assistance (beyond original budget) $ 1,865 Task 3 Additional Budget for RFCs /questions $ 5,445 Task 4 Site Visits/Meetings (beyond original budget) $ 1,835 Task 4 Additional Budget for Remaining Biweekly Meetings $ 6,300 Task 7 Disinfection System Redesign (performed) $ 7,500 Task 8 Construction Survey and Staking (peribrnied) $ 6,555 Task 8 Construction Survey and Staking (additional) $ 4,000 Task 9 Concrete Mixer Foundation (performed) $ 2,500 Total Additional Budget $'36,000 The billing rates and all other terms of the existing contract will remain the same. The total contract arrrount will be increased from $54,500 to $90,500. If you have any questions, please call. StKe Tedesco, P.E. Divisional Senior Vice President SDT /SE:cg J: \00606 \0055.01 \1- 004se.doc(100)