Loading...
HomeMy WebLinkAbout21.c. Committee Minutes-Engineering & Operations 06-22-2022 Page 1 of 7 Item 21.c. CENTRALSAN jdf A- hom CENTRAL CONTRA COSTA SANITARY DISTRICT July 7, 2022 TO: HONORABLE BOARD OF DIRECTORS FROM: KATIE YOUNG, SECRETARYOF THE DISTRICT SUBJECT: JUNE 22, 2022 - ENGINEERING & OPERATIONS COMMITTEE - CHAIR LAURITZEN AND MEMBER HOCKETT Attached are minutes of the above Committee meeting. ATTACHMENTS: 1. Minutes of 06-22-22 meeting July 7, 2022 Regular Board Meeting Agenda Packet- Page 131 of 137 Page 2 of 7 CENTRAL SAN CENTRAL CONTRA COSTA SANITARY DISTRICT 5019 IMHOFF PLACE, MARTINEZ, CA 9A553-4392 REGULAR MEETING OF THE BOARD oFDIRECTORWILLIAM DAVID R. WILLIAMS CENTRAL CONTRA COSTA Preen` SANITARY DISTRICT BARBARA D.H°CKETT President Pro Tem ENGINEERING & OPERATIONS MARIAHN.LAURITZEN COMMITTEE MICHAEL R.MCGILL TAD J PILECKI MINUTES PHONE: (925)228-9500 FAX.- (925)372-0192 Wednesday, June 22, 2022 www.centralsan.org 11:00 a.m. (All attendees participated via videoconference) Committee: Chair Mariah Lauritzen Member Barbara Hockett .Guest.- Dave uest.Dave Richardson, Project Manager, Woodard & Curran (left during Item 5.a.) Staff. Roger S. Bailey, General Manager Katie Young, Secretary of the District Philip Leiber, Director of Finance and Administration Steve McDonald, Director of Operations (joined during Item 4.a.) Jean-Marc Petit, Director of Engineering and Technical Services Edgar Lopez, Capital Projects Division Manager Dan Frost, Senior Engineer Russ Leavitt, Engineering Assistant III Amelia Berumen, Assistant to the Secretary of the District 1. Notice This meeting was conducted virtually in accordance with the provisions stipulated in Assembly Bill 361 and adopted on June 16, 2022, by the Central San Board of Directors. The agenda included instructions for options in which the public could participate in the meeting. July 7, 2022 Regular Board Meeting Agenda Packet- Page 132 of 137 Page 3 of 7 Engineering & Operations Committee Minutes June 22, 2022 Page 2 2. Call Meeting to Order Chair Lauritzen called the meeting to order at 11:00 a.m. 3. Public Comments No comments. 4. Items for Committee Recommendation to Board a. Review draft Position Paper to consider adopting (1) Resolution of Intention No. 2022- to initiate the formation of the Houston Court Area Contractual Assessment District (CAD) No. 2022-1 for the purpose of installing sewer improvements on Quinnterra Lane in Danville, and (2) Resolution No. 2022- approving the boundary for the proposed CAD Mr. Leavitt provided a brief overview of the draft Position Paper and CAD process; the first step being to initiate the formation of a CAD. He explained the project area is adjacent to an elementary school just west of the downtown Danville area. As such, the project participation is limited to four potential property connections; therefore, the cost is higher with the limited number of participants. Due to the extensive planning and organization work involved, construction is not expected to occur until next summer. The Committee had no questions. COMMITTEE ACTION: Recommended Board approval. b. Review draft Position Paper to authorize the General Manager to execute a professional engineering services agreement with Woodard & Curran, Inc. in an amount not to exceed $1,400,000 for the Collection System Master Plan Update; and find the agreement is exempt from the California Environmental Quality Act Mr. Petit announced he would recuse himself from providing a recommendation or comment on this matter. Mr. Waples presented the information provided in draft Position Paper, explaining that a comprehensive Master Plan for the collection system — the largest District asset - is completed every five years, the last study was in 2017. He advised that a complete Request for Proposal (RFP) process was concluded this April. Three strong teams submitted proposals,- Woodard roposals,Woodard & Curran, Inc. was selected as the top candidate. July 7, 2022 Regular Board Meeting Agenda Packet- Page 133 of 137 Page 4 of 7 Engineering & Operations Committee Minutes June 22, 2022 Page 3 It was explained that many pieces will be evaluated as part of the Master Plan, including but not limited to: • Refinement of budgetary costs for capital projects over the next ten years; • Review program for large diameter mains, many of which are reinforced concrete pipe; • Inspect force mains as there is no formal program at this time; • Additional inspections at pump stations that have not yet been recently or fully renovated; and • Exploration of the `utility of the future'concept and where Central San may head with the collection system. Mr. Waples touched upon other consultant agreements/projects that will work in parallel with the Master Plan, such as asset planner software that is being led by West Yost Associates. He stated the total consulting agreement with Woodard & Curran would be $1.4 million, which includes a $200,000 contingency budget. Mr. Frost added that a team of consultants will be working together collaboratively on this project bringing a wealth of experience to move forward with the various planning needs. Member Hockett inquired about innovations in technology to mitigate the degradation often seen in the pipelines. Mr. Waples responded there is no magic answer; however, many concepts will be on the table for evaluation and consideration, including looking at concrete with other enhancements. Mr. Lopez discussed some industry considerations, including impregnating concrete with additives and the push to move away from plastic linings. He noted some companies have moved towards different types of slip lining concepts in the last five years. Mr. Lopez stated Central San is not capacity limited and slip lining is likely the District's future; a consultant's assistance is needed in that area. Lastly, Mr. Lopez spoke of conversations in having drones enter air piping at the plant rather than having a person(s) enter the pipe for inspection coverage. In response to inquiry by Chair Lauritzen if the plan is being triggered by the size in pipe and if there is a standard for capacity updates, Mr. Waples stated that hydraulic modeling is done every five years. The last session moved to a dynamic modeling system. He noted a change in flow, water saving devices, and population changes have been seen; staff is attempting to stay ahead and upsize pipes for capacity where needed. He stated the trigger is timing and it is time for fresh data capture, especially in the wake in popularity of constructing accessory dwelling July 7, 2022 Regular Board Meeting Agenda Packet- Page 134 of 137 Page 5 of 7 Engineering & Operations Committee Minutes June 22, 2022 Page 4 units that add flow to the system. Modeling is not captured in real time and a data refresh is overdue. Mr. Petit stated that as part of the Comprehensive Wastewater Master Plan (CWMP), a new dynamic model was developed. Staff did flow monitoring at key sewer manhole locations and created a baseline using a dry-weather basis and a second year which had heavy rains to develop a wet weather curve used in the model. As it pertained to a timeline for the contract asked by Chair Lauritzen, Mr. Waples stated staff anticipates wrapping up by next summer. There are many moving parts that will be working in parallel over the next 12- month period. The Committee had no further questions. COMMITTEE ACTION: Recommended Board approval. 5. Other Items a. Receive project update and ultraviolet (UV) equipment selection process for the UV Disinfection Replacement, District Project 100012 Mr. Petit presented the information provided with the agenda materials and provided an in-depth explanation of the UV process. He stated the project has been well coordinated with all involved staff and will be a seamless transition as it moves from the planning phase to capital projects. Mr. Lopez presented an overview of the equipment selection process for the project (slide 11). He stated that several people have been working together to submit a qualified bid document for equipment selection, similar to what was completed for the Solids Handling Facility Improvements Project. This allows an establishment of a prequalified list that follows a pass-fail criteria approach for manufacturer selection of the required equipment. Once qualified, it is then a low-bid process. Based on the proposed schedule on slide 12, staff anticipates bringing forth equipment and final design contracts for Board consideration by the end of the calendar year. Member Hockett reflected on UV systems that were exhibited at the last WEFTEC' and noted that one priority was to have a hydraulic bank of lamps to avoid the need to purchase another piece of equipment. Mr. Petit concurred and stated there are two systems to bid side-by-side that have ' WEFTEC defined as Water Environment Federation's Technical Exhibition and Conference July 7, 2022 Regular Board Meeting Agenda Packet- Page 135 of 137 Page 6 of 7 Engineering & Operations Committee Minutes June 22, 2022 Page 5 similar lifting mechanism features; one uses a hydraulic system, the other an electric drive. He indicated the installation of a crane for lifting assistance remains a likely feature that will be added. Mr. Petit continued that heat, as well as rain, is detrimental to electronic components and equipment; therefore, consideration is being made to install a roof over the facility. Chair Lauritzen inquired about current lamp maintenance, especially as it pertained to acid cleaning and how that compares to a newer system. Mr. Petit stated the maintenance would differ. The lamps will be inside a quartz sleeve that will need to be wiped cleaned for effective light emission while in place, which both manufacturers currently offer. One manufacturer has a patent that uses a mild acid-based gel to wipe off biological growth that can accumulate over time on the sleeves. The need to lift the entire bank to do maintenance will no longer be required, nor would a dipping tank be required with the new design. The safety ramifications of using an acid solvent tank for cleaning and the labor- intensive process as part the current maintenance protocols were duly noted. Mr. Goel added that the chlorine-based gel alternative mentioned is a food-grade acid and would not be of detriment to fish life. Additionally, he explained a new system will reduce the labor involved to maintain the UV lamps. Both Mr. Lopez and Mr. Goel expressed the impressiveness of the staff knowledge shared as part of this project planning effort, and the lessons learned throughout the years. Mr. Lopez noted some staff have worked on the UV system for over 20 years and have passed on valuable knowledge. Mr. Goel added that the Operations and Maintenance staff have been very involved with the project, including the selection and design of the system. The Committee had no further questions or concerns. COMMITTEE ACTION: Received the information. 6. Announcements Mr. Petit announced staff will begin the advertisement process for the Pump Stations Upgrades-Phase 2A project, which includes two of the three pump stations in Martinez, specifically Fairview and Maltby. This project was originally scheduled to begin the bid phase last month but had been delayed pending final land acquisition processing. Staff conferred with District Counsel and received concurrence to proceed with the bid phase of the project. The final land swap July 7, 2022 Regular Board Meeting Agenda Packet- Page 136 of 137 Page 7 of 7 Engineering & Operations Committee Minutes June 22, 2022 Page 6 agreement for construction of a new pump station will be handled by a title company. Mr. Lopez explained it is atypical to include an announcement while a project is advertising; however, in order to maintain a rigorous schedule to acquire the necessary equipment, the bid phase needed to begin prior to the standard written announcement provided with the next Board agenda packet. 7. Suggestions for Future Agenda Items a. Receive list of upcoming agenda items and provide suggestions for any other future agenda items COMMITTEE ACTION: Received the list. 8. Future Scheduled Meetings Wednesday, July 6, 2022 at 11:00 a.m. Wednesday, August 3, 2022 at 11:00 a.m. Wednesday, August 31, 2022 at 11:00 a.m. 9. Adiournment— at 12:03 p.m. July 7, 2022 Regular Board Meeting Agenda Packet- Page 137 of 137