HomeMy WebLinkAbout04.c. Award construction contract to Aztec Consultants Inc. for Plant Control System UPS Replacement, DP 6171Central Contra Costa Sanitary District BOARD OF DIRECTORS - C • POSITION PAPER Board Meeting Date: November 19, 2015 Subject: AWARD A CONSTRUCTION CONTRACT AND AUTHORIZE THE GENERAL MANAGER TO EXECUTE CONTRACT DOCUMENTS SUBJECT TO SUBMITTAL REQUIREMENTS WITH AZTEC CONSULTANTS INC. FOR THE PLANT CONTROL SYSTEM UPS REPLACEMENT, DISTRICT PROJECT 6171 Submitted By: Initiating Dept/Div.: Clint Shima, Senior Engineer Engineering and Technical Services /Capital Projects REVIEWED AND RECOMMENDED FOR BOARD ACTION: E. Lopez — Capital Projects Division Manager ...J �. JM. Petit — Director of Engineering and Technical Services Roger S. Bailey �A General Manager ISSUE: On November 10, 2015, five (5) sealed bids were received and opened for the construction of the Plant Control System UPS Replacement, District Project 6171. The Board of Directors must award the contract or reject bids within 50 days of the bid opening. Authorize the General Manager to execute the Contract Documents subject to SUBMITTAL requirements. BACKGROUND: The Capital Improvement Budget (CIB) Priority Ranking for this project is critical and the work aligns with the District's Strategic Plan, specifically Goal No. 6, which is "Maintain a Reliable Wastewater Infrastructure." This project will install a new uninterruptible power supply (UPS) for the treatment plant controls system. The system is critical for supplying stable power to sensitive control equipment and will replace the existing UPS that is over twenty years old and reaching the end of its useful life. Replacement is being recommended since the existing UPS requires an expensive overhaul and a new UPS is highly favorable when compared to the cost for replacement batteries. In addition, the new UPS design will allow for additional reliability with future interconnection and bypass capabilities for future replacement or expansion. The new equipment includes two 30 -kW / 50 -kW frame UPS modules with rectifiers, inverters, battery chargers, static bypass, and control panels. The project scope involves the procurement of the equipment and electrical infrastructure work. The project work area is in the Pump and Blower Building as shown in Attachment 1. District staff prepared the plans and specifications for the project. MWH performed a technical review of the project. The Engineer's estimate for construction is $350,000. This project was advertised on October 21 and 28, 2015. Five sealed bids ranging from $436,560 to $585,000 were received and publicly opened on November 10, 2015. Page 1 of 5 POSITION PAPER Board Meeting Date: November 19, 2015 Subject: AWARD A CONSTRUCTION CONTRACT AND AUTHORIZE THE GENERAL MANAGER TO EXECUTE CONTRACT DOCUMENTS SUBJECT TO SUBMITTAL REQUIREMENTS WITH AZTEC CONSULTANTS INC. FOR THE PLANT CONTROL SYSTEM UPS REPLACEMENT, DISTRICT PROJECT 6171 The Engineering Department conducted a technical and commercial review of the bids and determined that Aztec Consultants Inc. is the lowest responsive bidder with a base bid amount of $436,560. A summary of bids received is shown in Attachment 2. An additive bid item to replace the electrical feeder unit was included with the project and is valued at $9,560. Including the feeder unit in the contract is recommended. Therefore, the total contract requested for award of this construction project is $446,120. The low bid was over the engineer's estimate due to the rising construction costs with the work and equipment associated in the project. Staff recommends proceeding with the project at this time since the bids were very competitive and the work is critical to the Operations Department. District staff will administer the construction contract and will provide contract administration, office engineering, and submittal review. Inspection will be performed by staff with specialty assistance from one of the District's as- needed inspection companies. CEQA: Staff has concluded that this project is exempt from the California Environmental Quality Act (CEQA) under District CEQA Guidelines Section 15302, because it involves alteration of an existing sewer facility at substantially the same locations and with the same purpose and level of activity as the facilities being replaced. Any capacity increases are for non- growth inducing, wet weather purposes. Approval of this project will establish the Board of Directors' independent finding that this project is exempt from CEQA. ALTERNATIVES /CONSIDERATIONS: Reject all bids, which is not recommended. FINANCIAL IMPACTS: The funds required to complete this project, as shown in Attachment 3, are $560,000. The total project cost of the Plant Control System UPS Replacement is anticipated to be $590,000, which includes design, bid price, construction, contingency, and construction management. This project is being funded under the Equipment Replacement Project included in the Fiscal Year 2015 -16 CIB on page TP -32 with a total estimated project budget of $2.4 million. Staff has conducted a budget analysis of the Treatment Plant Program budget and concluded that adequate funds are available for this project. COMMITTEE RECOMMENDATION: The Engineering and Operations Committee reviewed this subject at the meeting on November 10, 2015, and recommended approval to award the construction contract. Page 2 of 5 POSITION PAPER Board Meeting Date: November 19, 2015 Subject: AWARD A CONSTRUCTION CONTRACT AND AUTHORIZE THE GENERAL MANAGER TO EXECUTE CONTRACT DOCUMENTS SUBJECT TO SUBMITTAL REQUIREMENTS WITH AZTEC CONSULTANTS INC. FOR THE PLANT CONTROL SYSTEM UPS REPLACEMENT, DISTRICT PROJECT 6171 RECOMMENDED BOARD ACTION: Staff recommends the following: 1. Find that the project is exempt from CEQA, 2. Award a construction contract in the amount of $446,120 for the construction of the Plant Control System UPS Replacement, District Project 6171, to Aztec Consultants Inc., the lowest responsible and responsive bidder, and 3. Authorize the General Manager to execute the Contract Documents subject to SUBMITTAL requirements. Attached Supporting Documents: 1. Project Location Map 2. Summary of Bids 3. Post -Bid / Preconstruction Estimate Page 3 of 5 KA a� Central Contra Costa PLANT CONTROL SYSTEM Attachment Sanitary District UPS REPLACEMENT Affik District Project 6171 1 Martinez, California Page 4 of 5 ATTACHMENT 2 PLANT CONTROL SYSTEM UPS REPLACEMENT DISTRICT PROJECT 6171 SUMMARY OF BIDS PROJECT NO.: 6171 DATE: NOVEMBER 10, 2015 PROJECT NAME: PLANT CONTROL SYSTEM UPS REPLACEMENT PROJECT LOCATION: PUMP AND BLOWER BUILDING NO. OF ADDENDA: 1 ENGINEER'S ESTIMATE: $350,000 NO. BIDDER BID PRICE 1 Aztec Consultants $436,560 * San Ramon, CA 94583 2 D.W. Nicholson Corporation $446,315 Hayward, CA 94540 3 Blocka Construction, Inc. $488,000 Fremont, CA 94538 4 NEMA Construction $549,000 Albany, CA 94706 5 Steiny and Company, Inc. $585,000 Vallejo, CA 94590 BIDS OPENED BY: /s/ Elaine E. Boehme, CMC DATE: 11/10/15 *Additive bid item for replacement feeder unit is $9,560. Therefore total award would be $446,120. Page 5 of 5 ATTACHMENT 3 PLANT CONTROL SYSTEM UPS REPLACEMENT DISTRICT PROJECT 6171 POST -BID / PRECONSTRUCTION ESTIMATE No. Item Description Amounts % Construction Cost 1. CONSTRUCTION a. Base Construction Contract $436,560 b. Additive bid item for feeder replacement $9,560 I c. Contingency 10% $43,880 SUBTOTAL — CONSTRUCTION $490,000 100% 2. CONSTRUCTION MANAGEMENT a. District Forces - Construction Management, Engineering $30,000 - POD Coordination $25,000 b. Consultants - Inspection $15,000 SUBTOTAL - CONSTRUCTION MANAGEMENT $70,0001 14.3% 3. PREBID EXPENDITURES a. District Engineering: Planning, Design and POD Coordination $25,000 5.1% b. Peer Review (MWH) $5,000 1.0% SUBTOTAL — ESTIMATED EXPENDITURES $30,00 0 6.1% 4. TOTAL PROJECT COST $590,000 5. FUNDS BUDGETED TO DATE* $30,000 6. ADDITIONAL FUNDS NEEDED TO COMPLETE PROJECT (Line 4 - Line 5) 560 000 *Project is being funded from Treatment Plant Equipment Replacement, DP 7326 Page 5 of 5