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Home My WebLink About04.b. Review draft Position Paper to award a construction contract for Electric Blower Improvements, DP 100015 and Treatment Plant Piping Renovations, Phs 10, DP 7369 and authorize various contract agreements Page 1 of 13 Item 4.b. CENTRAL SAN BOARD OF DIRECTORS POSITION PAPER DRAFT MEETING DATE: JULY 13, 2021 SUBJECT: REVIEW DRAFT POSITION PAPER TO AWARD A CONSTRUCTION CONTRACT I N THE AMOUNT OF $9,594,300 TO AUBURN CONSTRUCTORS, LLC, THE LOWEST RESPONSIVE AND RESPONSIBLE BIDDER FOR THE ELECTRIC BLOWER IMPROVEMENTS, DISTRICT PROJECT 100015 AND TREATMENT PLANT PIPING RENOVATIONS, PHASE 10, DISTRICT PROJECT 7369; FIND THESE PROJECTS ARE EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITYACT; AND AUTHORIZE THE GENERAL MANAGER TO: • AMEND TWO EXISTING AGREEMENTS WITH 1) HDR, INC. IN THE AMOUNT OF $450,000, INCREASING THE COST CEILING TO $3,920,000, AND 2) LEE & RO, I NC. I N THE AMOUNT OF $300,000, INCREASING THE COST CEILING TO $800,000; • EXECUTE A PROFESSIONAL ENGINEERING SERVICES AGREEMENT IN AN AMOUNT NOT TO EXCEED $800,000 WITH CAROLLO ENGINEERS, INC. TO PROVIDE CONSTRUCTION MANAGEMENT SERVICES; AND • EXECUTE THE CONTRACT DOCUMENTS SUBJECT TO SUBMITTAL REQUIREMENTS AND INCLUDE UP TO A 15-PERCENT CONTINGENCY SUBMITTED BY: INITIATING DEPARTMENT: NANCYA. MOLINA, ASSOCIATE ENGINEER ENGINEERING AND TECHNICAL SERVICES- CHATHURAABEYRATHNA, ASSOCIATE CAPITAL PROJECTS ENGINEER REVIEWED BY: CRAIG MIZUTANI, SENIOR ENGINEER EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES ISSUE The Board of Directors (Board) must award the contract or reject bids within 50 days of the bid opening. Authorization is required for the General Manager to execute the Contract Documents subject to submittal requirements and include up to a 15-percent contingency. Authorization is also required to amend an existing agreement and execute an agreement in an amount over$200,000. July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 7 of 21 Page 2 of 13 BACKGROUND Novel Coronavirus (COV I D-19) Impact: In the midst of COVI D-19, Central San continues construction activities as an essential service and infrastructure provider under guidelines provided by Contra Costa Health Services, Occupational Safety and Health Administration, state and federal agencies. The construction contract includes strict provisions to mitigate the spread of COVI D-19, such as personal protective equipment, handwashing stations, and other safety items, practices, and procedures as guidelines become more restrictive or lessen. Electric Blower Improvements, District Project(DP) 100015 (Blower Project): On July 16, 2020, the Board authorized the Blower Project and on November 19, 2020, authorized the procurement of three new electric blowers and associated electrical systems. The new blowers are to be District-supplied equipment to an installing contractor and manufactured byAPG-Neuros Inc. (APGN).As part of the procurement contract with APGN, the engineering requirements and design was closely coordinated with Central San's design engineer, HDR, Inc. (HDR), to create technical bid documents for the installation of the new equipment. The APGN equipment is under fabrication and the first blower is expected to arrive by 2022. The Blower Project scope of work includes the installation of three new 35,000 standard cubic feet per minute electric blowers, variable frequency drives (VFDs), chillers, replacement filter houses, major electrical components, and control equipment. In addition, civil improvements are required in the Pump and Blower Building to accommodate the new large electrical transformers under the project. Aeration air and the blowers are critical to the wastewater treatment plant (plant) process and insufficient air over a prolonged period of time could result in National Pollutant Discharge Elimination System (NPDES) Permit compliance issues resulting from biological upsets. The Blower Project will provide full redundancy for backup or emergency conditions for the blowers and allow for safe operations and reliability for the electrical blowers to be used with the existing standby generators or cogeneration system in the case of power outages, PG&E Public Safety Power Shutoffs or planned shutdowns related to other projects like the Solids Handling Facility Improvements. Treatment Plant Piping Renovations, Phase 10, DP 7369 (Piping Project): Many of the plant's piping and related systems have been in place for nearly forty years or more and have required repairs or temporary solutions. Failures of such piping systems reduce reliability and can adversely impact the plant and its process. The Piping Project will renovate and/or replace various piping, instrumentation, and equipment in the plant that have been identified by Engineering, Operations, and Maintenance staff as in need of immediate replacement. The scope includes various modifications, such as replacement of the secondary scum piping system, replacement and improvements to the sodium hypochlorite injection system, and various improvements to the potable water system. The project will also replace electrical equipment such as the VFDs for pumps and other equipment. Construction and Consultant Contracts: Capital Projects decided to combine the Blower and Piping Projects for bid under one general contractor due to the similarity in scope, shared site locations, and other project or cost benefits.A combined project map is seen in Attachment 1. Staff, with the assistance of HDR (Blower Project) and Lee & Ro, Inc. (Piping Project), prepared the bid documents and the projects were publicly advertised on May 10 and 17, 2021. The overall Engineer's estimate for construction was $14,000,000. Central San received three sealed bids, ranging from $9,594,300 to $10,979,047 on July 1, 2021.A summary of bids received is shown in Attachment 2. The Capital Projects Division conducted a technical and commercial review of the bids and determined that Auburn Constructors, LLC is the lowest responsive and responsible bidder with a bid amount of July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 8 of 21 Page 3 of 13 $9,594,300. Central San staff will construction manage the projects with the assistance of services provided by outside consultants. Central San will continue with HDR and Lee & Ro, I nc. for engineering services during construction (ESDC). Staff has negotiated fees and a cost ceiling for the ESDC work with both designers to be performed on an as-needed basis. On May 24, 2021, Central San issued a Request for Proposal (RFP)for as-needed construction support services for the Capital Program including the Blower and Piping Projects. The intent of the services is to support Central San staff with resident engineering and electrical, instrumentation, and controls specialty inspection tasks, as well as the typical construction management services. On June 18, 2021, Central San received four proposals. After a detailed review, staff interviewed the top three proposers and Carollo Engineers, Inc. (Carollo) ranked as the top firm for the Blower and Piping Project. This determination was based on experience, references, specialty electrical knowledge of key personnel, and fees. As part of the RFP, staff will be recommending a future $500,000 contract revision with Carollo to include the same services on an as-needed basis for other projects in the Capital Program. A second firm, MW H Constructors, has also been selected for as-needed services for the same amount, and the Board will consider these agreements at a future Board meeting. California Environment Quality Act(CEQA) Staff has concluded that these projects are exempt from CEQA under CEQA Guidelines Section 15302, because they involve replacement of existing sewer facilities at substantially the same locations and with the same purpose and level of activity as the facilities being replaced. Approval of these projects will establish the Board's independent findings that these projects are exempt from CEQA. ALTERNATIVES/CONSIDERATIONS The Board could consider the following alternative: 1. Reject all bids, which is not recommended. The project will increase the reliability to the aeration system and the secondary process area and provide for long-term reliability and operational performance. FINANCIAL IMPACTS The total estimated project cost for the Blower and Piping Project totals $18,845,000, which includes planning, design, APGN equipment pre-purchase, construction contract, contingency, construction management, and consultant costs as detailed in Attachment 3. Staff is recommending a contingency of 15-percent since both projects include heavy renovation within an operating facility. The contingency will be used to cover costs associated with differing site conditions or requests made by Central San to reliably operate the facilities. The combined budget for the work is estimated at$21.7 million (M) and can be found on page 244 in the Fiscal Year(FY) 2021-22 Budget for the Treatment Plant Piping Renovations, Phase 10 ($5.95 M) and page 256 for the Electric Blower I mprovements ($15.75 M). The remainder or unused budget shall be transferred to the FY 2021 Capital Improvement Budget Contingency account. COMMITTEE RECOMMENDATION The Engineering and Operations Committee will review this matter at its July 13, 2021 meeting. Staff can provide an update of the Committee's recommendation at the July 15 Board meeting. July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 9 of 21 Page 4 of 13 RECOMMENDED BOARD ACTION Staff recommends the following: 1. Find the projects are exempt from CEQA; 2. Award a construction contract in the amount of$9,594,300 to Auburn Constructors, LLC, the lowest responsive and responsible bidder for the Electric Blower I mprovements, District Project 100015 and Treatment Plant Piping Renovations, Phase 10, District Project 7369; 3. Authorize the General Manager to amend an existing professional services agreement with HDR, I nc. in the amount of$450,000, increasing the cost ceiling to $3,920,000; 4. Authorize the General Manager to amend an existing professional services agreement with Lee & Ro, I nc. in the amount of$300,000, increasing the cost ceiling to $800,000; 5. Authorize the General Manager to execute a professional engineering services agreement in an amount not to exceed $800,000 with Carollo Engineers, Inc. to provide construction management service; and 6. Authorize the General Manager to execute the Contract Documents subject to submittal requirements and include up to a 15-percent contingency. Strategic Plan Tie-In GOAL TWO:Environmental Stewardship Strategy 1—Achieve 100%compliance in all regulations GOAL FOUR: Workforce Development Strategy 4—Meet or exceed industry safety standards GOAL FIVE:Infrastructure Reliability Strategy 2—Execute long-term capital renewal and replacement program, Strategy 3—Protect personnel and assets from threats and emergencies GOAL SIX:Innovation and Optimization Strategy 2—Improve and modernize operations through technology and efficiency measures GOAL SEVEN:Agility and Adaptability Strategy 2—Plan ahead for scenarios of direct adverse impacts ATTACHMENTS: 1. Project Location Map 2. Summary of Bids 3. Post Bid/Preconstruction Estimate 4. Presentation July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 10 of 21 Page 5 of 13 U N Q 0 150 300 FEET LEGEND: PROJECT AREA �Q pR�VE N p IMrf U� o 0 rs Gari{�e� 0 U� W<S .�ar 0 O stir HWC 0.o M \a��{%ec s so��on�r9� P PNS c O 0r160�d�r9 o o T � UU � o arehou e HOB m 1)0 Annex a Q � � 0 N& o U Sed��arKs 0 as a 6' O CENTRAL SAN Electric Blower Improvements, DP 100015 Position ' and Treatment Plant Piping Renovations, 1 Phase 10 DP 7369 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 11 of 21 Page 6 of 13 ATTACHMENT 2 ELECTRIC BLOWER IMPROVEMENTS & TREATMENT PLANT PIPING RENOVATIONS, PHASE 10 DISTRICT PROJECTS 100015 & 7369 SUMMARY OF BIDS PROJECT NOS.: 100015 & 7369 NO. OF ADDENDA: 2 DATE/TIME: JULY 1, 2021/12:00 PM PROJECT NAME: ELECTRIC BLOWER IMPROVEMENTS & TREATMENT PLANT PIPING RENOVATIONS, PHASE 10 PROJECT MANAGER: NANCY MOLINA PROJECT LOCATION: 5019 IMHOFF PLACE, MARTINEZ, CA ENGINEER'S ESTIMATE: $14,000,000 NO. BIDDER BID PRICE Auburn Constructors, LLC $9,594,300 Sacramento, California 2 C. Overaa & Co. $10,462,000 Richmond, California 3 Mountain Cascade, Inc. $10,979,047 Livermore, California BIDS OPENED BY /s/Katie Young DATE:JuIV 1 , 2021 at 12:30 p.m. via livestream due to COVID-19 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 12 of 21 Page 7 of 13 ATTACHMENT 3 ELECTRIC BLOWER IMPROVEMENTS & TREATMENT PLANT PIPING RENOVATIONS, PHASE 10 DISTRICT PROJECTS 100015&7369 POST-BID/PRECONSTRUCTION ESTIMATE % Of Construction No. Item Description Amounts Cost 1. CONSTRUCTION a. Construction Contract $9,594,300 b.15% Contingency $1,440,700 c. APGN Equipment Pre-Purchase $3,500,000 d. Permits $10,000 SUBTOTAL- CONSTRUCTION COST $14,545,000 100% 2. CONSTRUCTION MANAGEMENT a. District Forces (Capital Projects and Operations) $700,000 b. Consultants - Carollo Engineers (CM Services) $800,000 - HDR (ESDC) $450,000 - Lee & Ro (ESDC) $300,000 SUBTOTAL- CONSTRUCTION MANAGEMENT $2,250,000 15% 3. PREBID EXPENDITURES a. Engineering (Blower Project) $1,300,000 b. Engineering (Piping Project) $750,000 SUBTOTAL- PREBID EXPENDITURES $2,050,000 14% 4. TOTAL ESTIMATED PROJECT COST $18,845,000 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 13 of 21 Page 8 of 13 Attachment 4 AWARD OF ELECTRIC BLOWER IMPROVEMENTS r AND _ . TREATMENT PLANT PIPING RENOVATIONS, PHASE 10 DISTRICT PROJECTS 100015 AND 7369 Engineering and Operations Committee Meeting > July 13, 2021 Jean-Marc Petit, Director of Engineering and Technical Services Edgar J. Lopez, Capital Projects Division Manager 1 1 PROJECTS LOCATIONS Electric Blower Improvements, \ District Project(DP) ` 100015(Blower '` n Project) _-CENTRALSM Electric Blower Improvements,DP 100015 eo� and Treatment Plnnt Piping Renovations. 1 ,71_ Phase 10 DP 7369 ' - 2 2 1 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 14 of 21 Page 9 of 13 TREATMENT PLANT PIPING RENOVATIONS, PHASE 10, DP 7369 The following are major project elements: • Replace piping, valves, and pumps throughout the plant • Replace the potable water tanks and associated controls • Replace water piping in the Plant Operations Building equipment gallery and other locations • Replace the hypochlorite chemical feed system, storage and feed pumps, and associated piping • Replace electrical and controls • Replace equipment identified by the Asset Management Program and confirmed by Operations and Capital Projects, such as variable frequency drives (VFDs) + � 3 CENTRALSAN DRIVERS FOR ELECTRIC BLOWER IMPROVEMENTS, DP 100015 1. Provide reliable aeration air during steam system or PG&E power outages at the treatment plant. 2. Recent failures with both the steam and electric blowers have increased the need for a more redundant blower system and back up air capacity. 3. Addition of electric blowers does not lead to stranded assets. Improved electric blowers are recommended under all future alternatives (short- and long-term)for reliable redundancy. 4. Allows for planned or unplanned shutdowns of the furnaces and associated waste heat boilers during the construction of Solids Handling Facility Improvements. L4 4 2 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 15 of 21 Page 10 of 13 LOCATION: NEW ELECTRIC BLOWERS WILL BE INSTALLED IN THE EXISTING BLOWER BUILDING Existing Electric Blower#3 to be replaced with New Electric Blow New Electric Pump and Blower Existing Steam Building Blower#2 To Remain Existing Steam Blower#1 To Remain d New Electric _ �� r Blower#4 J^ 5 CENTRALSAN 5 BLOWER PROJECT SCOPE OF WORK • Installation of three new electric blowers • Provide full backup to steam I system/blowers, including meeting peak aeration demands } • Electrical equipment • Transformers to convert 12,000-volt a=: (V)feed from treatment plant electrical system to 480 V - • VFDs to power motor efficiently and \ achieve lower air supply • Instrumentation and Controls • Air flow meters, pressure sensors, and other instruments for the new blowers that will conform with Central San standards • Master blower control panel and programming to operate all blowers 6 CENTRAL SAN 6 3 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 16 of 21 Page 11 of 13 EXPEDITED SCHEDULE FOR ELECTRIC BLOWER IMPROVEMENTS Estimated time required to be ready for wrk Year 2020 Year 2021-2023 SolidsProjectt. the 40 OOEMW July 16 Aug 31 Nov.19 t Feb-Mar July 15 August Nov. 2020 2020 2020 2021 2021 2021-Sept 2022 2022 Board 10%Design Equipment 100% Installation Construction Completion Approval Submittal Procurement Submittal Contractor Award at Bid/Award Board Meeting Arco ' CENTRAL SAN 7 BID SUMMARY PROJECT NOS.: 100015&7369 NO.0FADD'ENDA: 2 DATEITIME:JULY 1,2021112:00 PM PROJECT NAME: ELECTRIC BLOWER IMPROVEMENTS& TREATMENT PLANT PIPING RENOVATIONS,PHASE 10 PROJECT MANAGER: NANCY MOLINA PROJECT LOCATION: 5019 IMHOFF PLACE,MARTINEZ,CA ENGINEER'S ESTIMATE: $14,000,000 NO. BIDDER BID PRICE 1 Auburn Constructors,LLC $9,594,300 Sacramento,California 2 C.Overaa&Co. $10,462,000 Richmond,California 3 Mountain Cascade,Inc. $10,979,047 Livermore,Califomia 8 CENTRALSAN S 4 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 17 of 21 Page 12 of 13 COMBINED TOTAL PROJECT ESTIMATE ELECTRIC BLOWER IMPROVEMENTS& TREATMENT PLANT PIPING REN OVATION 5,PHASE 10 DISTRICT PROJECTS 100075&7369 POST$IDIPRECONSTRUCTION ESTIMATE %of Construction No. Item Description Amounts Cost 1. CONSTRUCTION aConstruction Contract $9,594,3DG L15%Contingency 31,440,7D0 c.APGN Equipment Pre-Purchase $3,SOG,000 d. Permits 1$O.U00 SUBTOTAL-CONSTRUCTION COST S14,545,0D0 10D% 2. CONSTRUCTION MANAGEMENT a.District Forces(Capital Projects and Operations) $7DG,0DG b.Consultants -Carol to Engineers(CM Services) $8D0,0DG -HDR(ESDC) $450,0DG -Lee&Ro(ESDC) 3DS W)DG SUBTOTAL-CONSTRUCT D N MANAG EM ENT $2,250,000 15% 3. PREBID EXPENDITURES a.Engineering(Blower Project) $1,3DG,0DG b.Engineering(Piping Project) 5750,000 SUBTOTAL-PREBID EXPENDITURES $2,050,000 14% 4. TOTAL ESTIVATE❑PROJECT COST 578,845,000 9 CENTRAL SAN 9 RECOMMENDED BOARD ACTION • Find the projects are exempt from CEQA; • Award a construction contract in the amount of$9,594,300 to Auburn Constructors, LLC, the lowest responsive and responsible bidder for the Electric Blower Improvements, District Project 100015 and the Treatment Plant Piping Renovations, Phase 10, District Project 7369; • Authorize the General Manager to amend two existing agreements with: HDR, Inc. for$450,000, and Lee & Ro, Inc. for$300,000; • Authorize the General Manager to execute a professional engineering services agreement with Carollo Engineers, Inc. in an amount not to exceed $800,000 to provide construction management services; and • Authorize the General Manager to execute the Contract Documents subject to submittal requirements and include up to a 15-percent contingency. ` r 10 CENTRAL SAN 10 5 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 18 of 21 Page 13 of 13 QUESTIONS? 6 July 13, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 19 of 21