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Home My WebLink About07. Award a construction contract to C. Overaa & Co and amend three engineering services agreements for the Pump Station Upgrades-Phase 2A, DP 8457 Page 1 of 8 Item 7. CENTRAL SAN BOARD OF DIRECTORS POSITION PAPER MEETING DATE: SEPTEMBER 15, 2022 SUBJECT: AWARD A CONSTRUCTION CONTRACT IN THE AMOUNT OF $27,606,000 TO C. OVERAA & CO., THE LOWEST RESPONSIVE AND RESPONSIBLE BIDDER, FOR THE PUMP STATION UPGRADES, PHASE 2A, DISTRICT PROJECT 8457; FIND THE PROJECT IS EXEMPT FROM THE CALIFORNIA ENVI RONMENTAL ACT; AND AUTHORIZE THE GENERAL MANAGER TO AMEND THREE EXISTING PROFESSIONAL ENGINEERING SERVICES AGREEMENTS WITH THE FOLLOWING CONSULTANTS INAMOUNTS NOT TO EXCEED: • CAROLLO ENGINEERS, INC. FOR $1.8 MILLION, INCREASING THE AGREEMENT TO $2 MILLION FOR CONSTRUCTION MANAGEMENT SERVICES; • HDR, INC. FOR $600,000, INCREASING THE AGREEMENTTO $790,000 FOR ENGINEERING SERVICES DURING CONSTRUCTION; AND • ARCSINE ENGINEERING, INC. FOR $500,000, INCREASING THE AGREEMENTTO $650,000 FOR ENGINEERING SERVICES DURING CONSTRUCTION SUBMITTED BY: INITIATING DEPARTMENT: KEITH GELLERMAN, ASSOCIATE ENGINEER ENGINEERING AND TECHNICAL SERVICES- CAPITAL PROJECTS REVIEWED BY: SASHA MESTETSKY SENIOR ENGINEER EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER Roger S. Bailey General Manager ISSUE On August 11, 2022, six bids were received for the construction of the Pump Station Upgrades, Phase 2A, District Project 8457 (Project). The Board of Directors (Board) must award the construction contract or reject bids within 50 days of the bid opening. Board authorization is also required for the General September 15, 2022 Regular Board Meeting Agenda Packet- Page 35 of 104 Page 2 of 8 Manager to amend a professional engineering services agreement above $200,000. BACKGROUND The Fairview and Maltby Pumping Stations were constructed in 1969 and are the second and third of the three pumping stations in series, respectively, with the Martinez Pumping Station being the first station to convey wastewater from the Martinez area to the treatment plant. The Fairview Pumping Station (Fairview) is situated in an industrial area adjacent to the PBF Refinery(formerly Shell Refinery) at 2001 Marina Vista, while the Maltby Pumping Station (Maltby) is in an isolated area accessible via a gravel road at 990 Central Avenue in Martinez. These pumping stations are nearly identical in design and features similar drywell or wetwell configurations. The drywell consists of a steel structure packaged as a fully functional station manufactured by the Mundix Company. The existing package houses the station components in a single structure rather than separate structures. The condition of the drywell steel has visible corrosion on the interior floor and lower wall surfaces which poses major apprehension in reusing the existing steel. I n addition, drywell access is via a narrow circular hatch which makes for Operations and Maintenance (O&M) access and egress very difficult. Both stations have undergone limited upgrades, with the most recent in 1999. Since 2010, Central San staff has evaluated and monitored Fairview and Maltby for several deficiencies, including the corrosion stated above, arc-flash levels, and electrical equipment conditions.A study identified that the existing electrical overcurrent breakers will not reliably trip for a fault when fed by the emergency generators. It was also identified that the generator overcurrent protection limits the loading of the generator, and there are vulnerabilities at certain load conditions. These pumping stations have shown multiple concerns, including aging assets, of which many are the electrical gear, potential risk of flooding due to sea level rise at Maltby, and maintenance accessibility issues for O&M staff. The Project is included in the Capital Improvement Budget titled Pump Station Upgrades, Phase 2, District Project 8457. V.W. Housen and Associates (VW HA) is the original designer of the Pump Station Upgrades, Phase 1 and hired for Phase 2. During the Phase 2 final design, VWHA notified the District that the project manager and lead engineers would retire or leave the firm. HDR, Engineering, I nc. (HDR) and ArcSine Engineering (ArcSine), electrical, were major subconsultants to VW HA, and they agreed to continue and take the lead of the final design and move forward with Phase 2 under the authorized budget amount. Due to market conditions and packaging the work for potential cost savings, staff worked with HDR and ArcSine to split the Phase 2 work into two projects: Phase 2A includes Fairview and Maltby while Phase 2B consists of Martinez. Overall, the scope of work for Phase 2A mainly consists of the installation of two new 12.4 MGD sewage pumping stations and includes, but not limited to, heavy civil, mechanical, electrical, instrumentation, and controls, installation of new PG&E services, demolition and decommissioning of the existing pumping stations.A project location map is shown in Attachment 1. The new Fairview and Maltby stations required the acquisition of land adjacent to each property. The Fairview site required a land swap with PBF, which is in the process of being finalized. The Maltby site required the acquisition of a portion of a privately-owned parcel located to the north of the existing site. Due to topography and land use, other properties adjacent to Maltby were less desirable. Staff has acquired the additional properties for the Project. Staff, HDR, and ArcSine prepared the plans and specifications for the Project. This Project was advertised on June 30 and July 7, 2022. Six sealed bids ranging from $27,606,000 to $34,228,000 were received and publicly opened on August 11, 2022. The Engineer's estimate for the construction of the Project is $35,400,000. Capital Projects conducted a technical and commercial review of the bids and determined that C. Overaa & Co. (Overaa) is the lowest responsive and responsible bidder.A summary of bids received is shown in Attachment 2. September 15, 2022 Regular Board Meeting Agenda Packet- Page 36 of 104 Page 3 of 8 Bidders were very competitive for the Project as the proposed work is well sequenced considering the current bidding environment and availability of major equipment. Staff and the consultants spent significant effort on the project constructability and advertising the electrical work to help drive better pricing, as evident with all bidders being below the engineer's estimate. Capital Projects staff will provide oversight of the construction management (CM)which includes the CM team (Carollo), design engineers (HDR and ArcSine), and contractor(Overaa)for the Project. Operations staff will support the Project as required to coordinate shutdowns and provide any other support needed to operate the stations. Public outreach with the City of Martinez, along with public relations with the impacted businesses and residents, will be coordinated through Central San's Communication Services group. Carollo is planned to be the day-to-day contact with the contractor and provide CM services that include documenting contract work, reviewing schedules, and safety oversight. HDR and ArcSine will assist with submittal reviews, contractor requests for information, and design clarifications. All consultants were hired under a formal competitive selection process that is compliant with the District's policies and procedures for professional engineering services. California Environmental Quality Act (CEQA) Staff has concluded that these projects are exempt from CEQA under Central San's CEQA Guidelines Section 15302 since they involve replacement of existing public facilities at substantially the same location and with the same purpose as the public facilities being replaced. The projects are also exempt under Central San's CEQA Guidelines Section 15061(b)(3), since it can be seen with certainty that there is no possibility that the activity in question may have a significant effect on the environment. This certainty is based on Central San's past experience with numerous pumping station construction projects of this nature, its long familiarity with the project sites, the results of recent biological and cultural resources technical studies, Central San's impact-limiting construction specifications, and the impact-limiting components of the project description. Central San's specifications are standardized general and special conditions that are made part of the project to address environmental considerations, as well as compliance with applicable federal, state, county, district, municipal and local laws, ordinances, orders, and regulations.Approval of this project will establish the Board of Directors' independent finding that this project is exempt from CEQA. ALTERNATIVES/CONSIDERATIONS The Board could consider the following alternatives or provide other directions: 1. Staff's approach of supplementing labor with consultants, such as the services being proposed with Carollo, could be rejected by the Board. Capital Projects is not currently staffed at a level to support this construction project.Additional staff, up to three full-time personnel, would have to be considered to perform construction management, general inspection, and resident engineering. Specialty inspection would need to be outsourced since staff does not have the qualifications to perform specialty-type work. 2. Reject all bids, which is not recommended. This Project will address the deficient and aging infrastructure at the pumping stations and provide long-term reliability and operational performance of the electrical systems and backup emergency equipment. FINANCIAL IMPACTS The total estimated project cost is $38,000,000, which includes staff time, consultant costs, land acquisition, construction contract, contingency, construction management, and other costs detailed in Attachment 3. Phase 2 was included in the Fiscal Year 2022-23 Budget on page 212 with an estimated budget of$47,950,000, which includes the Pump Station Upgrades, Phase 2B (Martinez) project. The September 15, 2022 Regular Board Meeting Agenda Packet- Page 37 of 104 Page 4 of 8 remaining budget, approximately$10,000,000, is being reserved for the renovation of the Martinez Pumping Station. COMMUNITY OUTREACH Central San has held multiple meetings with the City of Martinez to answer any questions or concerns about the Project. Additional notifications will be provided to all impacted residents and businesses after the award of the Project and before construction begins. COMMITTEE RECOMMENDATION The Engineering and Operations Committee reviewed this project at its meeting on August 31, 2022 and recommended approval. RECOMMENDED BOARD ACTION Staff recommends the following Board actions: 1. Find that the Project is exempt from CEQA; 2. Award a construction contract in the amount of $27,606,000 to C. Overaa & Co., the lowest responsive and responsible bidder, for the Pump Station Upgrades, Phase 2A, District Project 8457; 3. Authorize the General Manager to execute the Contract Documents subject to submittal requirement and include up to a 10-percent contingency; and 4. Authorize the General Manager to amend three existing professional engineering services agreements with the following consultants in amounts not to exceed: • Carollo Engineers, I nc. for$1.8 million, increasing the agreement to $2 million for construction management services; • HDR, I nc. for$600,000, increasing the agreement to $790,000 for engineering services during construction; and • ArcSine Engineering, Inc. for$500,000, increasing the agreement to $650,000 for engineering services during construction. Strategic Plan re-In GOAL ONE: Customer and Community Strategy 1—Deliver high-quality customer service GOAL TWO: Environmental Stewardship Strategy 1 -Achieve compliance in all regulations, Strategy 4- Identify and advance sustainability initiatives, including reducing energy usage and emissions GOAL FIVE: Safety and Security Strategy 1 - Reduce and eliminate risks of injury or illness, Strategy 2- Protect personnel and assets from threats and emergencies September 15, 2022 Regular Board Meeting Agenda Packet- Page 38 of 104 Page 5 of 8 GOAL SIX., Infrastructure Reliability Strategy 2- Execute long-term capital renewal and replacement program ATTACHMENTS: 1. Project Location Map 2. Summary of Bids 3. Post Bid/P reconstruction Estimate September 15, 2022 Regular Board Meeting Agenda Packet- Page 39 of 104 Page 6 of 8 Pumping Station Upgrades, Phase 2A District Project 8457 Map Date:8/23/2022 Detail Area Martinez .:1 �ate�rOnttZd Concord Marina-I Vista Waterfront Rd Ave Fairview �lid"e116r Pleasant Hill •,, Pumping Station y Q � L c Maltby Pumping Pacheco-Blvd ��,�\ Station Q /0 o Pacheco-8tvd .:1 �e�a y �E �o o \E 4� m CIO O' N v = Q Oma, N 62 N g° o c pve Gentle • Project Location QTreatment Plant Boundary 0 1,000 2,000 Note: ,r Map Displayed in North American Datum of 1983 Attachment Central San data as of August 2022. 1 1 Feet California State Plane,Zone III FIPS 0403,US Feet 1 September 15, 2022 Regular Board Meeting Agenda Packet- Page 40 of 104 Page 7 of 8 ATTACHMENT 2 PUMP STATION UPGRADES, PHASE 2A DISTRICT PROJECT 8457 SUMMARY OF BIDS PROJECT NO.: 8457 NO. OF ADDENDA: 3 DATE/TIME: AUGUST 11, 2022/2:00 PM PROJECT NAME: PUMP STATION UPGRADES, PHASE 2A PROJECT MANAGER: KEITH GELLERMAN PROJECT LOCATION: 5019 IMHOFF PLACE, MARTINEZ CA ENGINEER'S ESTIMATE: $35,400,000 NO. BIDDER BID PRICE 1 C. Overaa & Co. $27,606,000 2 GSE Construction Company, Inc. $27,862,100 3 Anvil Builders, Inc. $29,467,650 4 Mountain Cascade, Inc. $30,588,000 5 SMCI/Obayashi Joint Venture $33,582,000 6 Steve P. Rados, Inc. $34,228,000 BIDS OPENED BY: /s/Katie Young DATE: August 11, 2022 September 15, 2022 Regular Board Meeting Agenda Packet- Page 41 of 104 Page 8 of 8 ATTACHMENT 3 PUMP STATION RENOVATIONS, PHASE 2A DISTRICT PROJECT 8457 POST-BID/PRECONSTRUCTION ESTIMATE % Of Item Description Amounts Construction No. Cost 1. CONSTRUCTION a. Construction Contract $27,606,000 b. 10% Contingency $2,761,000 c. Permits (Martinez, County, DTSC, BAAQMD, etc.) $83,000 SUBTOTAL- CONSTRUCTION COST $30,450,000 100% 2. CONSTRUCTION MANAGEMENT a. District Forces - Project Management (Capital Project Staff) $650,000 - Public Relations/Right-of-Way $50,000 - Operations $150,000 b. Consultants - Construction Management/Inspection (Carollo) $1,800,000 - ESDC (HDR and ArcSine) $1,100,000 - Material Testing/Specialty Inspection $350,000 SUBTOTAL- CONSTRUCTION MANAGEMENT $4,100,000 13.5% 3. PREBID EXPENDITURES a. Engineering (Design, Survey, Drafting)* $3.450,000 SUBTOTAL- PREBID EXPENDITURES $3.450,000 11.3% 4. TOTAL ESTIMATED PROJECT COST $38,000,000 * Includes the design of the Martinez Pump Station (Phase 213) September 15, 2022 Regular Board Meeting Agenda Packet- Page 42 of 104