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Home My WebLink About14.b. Committee Minutes-Engineering & Operations 02-07-2024 REGULAR MEETING OF THE CENTRAL CONTRA COSTA SANITARY DISTRICT ENGINEERING & OPERATIONS COMMITTEE MINUTES Wednesday, February 7, 2024 8:30 a.m. Committee: Chair Mike McGill Member Florence Wedington Staff: Roger S. Bailey, General Manager Katie Young, Secretary of the District Greg Norby, Deputy General Manager – Operations Philip Leiber, Deputy General Manager – Administration Alan Weer, Plant Operations Division Manager (joined during Item 4.a. and left after Item 4.b.) Danea Gemmell, Planning and Development Services Division Manager (left and rejoined during Item 4.c) Edgar Lopez, Capital Projects Division Manager Nitin Goel, Operations Optimization Manager (left after Item 4.b.) Paul Seitz, Collection System Operations Division Manager Sasha Mestetsky, Senior Engineer (left during 4.c.) Jason Fitch, Associate Engineer (left after Item 4.b.) Michael Cunningham, Associate Engineer (left after Item 4.a.) Stacey Durocher, Administrative Services Assistant 1. Call Meeting to Order Chair McGill called the meeting to order at 8:34 a.m. 2. Public Comments None. BOARD OF DIRECTORS: MARIAH N. LAURITZEN President MICHAEL R. MCGILL President Pro Tem BARBARA D. HOCKETT TAD J. PILECKI FLORENCE T. WEDINGTON PHONE: (925) 228-9500 FAX: (925) 372-0192 www.centralsan.org February 22, 2024 Special Board Meeting Agenda Packet - Page 107 of 128 Page 2 of 7 Engineering & Operations Committee Minutes February 7, 2024 Page 2 3. Committee Charter a. Review Committee Charter as set forth in Board Policy No. BP 013 – Standing Committee Protocols, Guidelines and Charters The Committee had no questions. COMMITTEE ACTION: Reviewed the Charter. 4. Items for Committee Recommendation to Board a. Review draft Position Paper to authorize the General Manager to execute a professional engineering services agreement with Hazen and Sawyer in an amount not to exceed $2,000,000 to complete final design services for the secondary Clarifier and Channel Improvements, District Project 100047 (Project); and find the project is exempt from the California Environmental Quality Act (CEQA) Mr. Goel provided an overview of the Position Paper included in the agenda materials. In response to Member Wedington’s question regarding the percentage of flow, Mr. Goel stated that the flow will be modeled as part of this project, and the Consultant said 10 to 15 percent can be diverted. Chair McGill asked what is considered a stranded asset in this project. Mr. Goel stated that it is what is surrounding the clarifier and the flow that comes into the clarifiers and the flow that comes out of the clarifiers for the nutrient removal process. Mr. Goel stated that the influent and effluent channels will be taken out of service to perform a condition assessment and will be rehabilitated. A discussion ensued regarding the clarifiers. Mr. Norby added that there are several important decisions that will need to be made in terms of the timing of the project. Chair McGill expressed concern over the many moving parts of this project that have to sync together and wants to understand how the discreet parts of this project will ultimately fit together. Further discussion ensued. In response to Chair McGill’s concern with the complexity of this project and recommending approval without a better holistic view and a clear view of all the discreet parts, Mr. Norby stated that the sequencing on the next phase of the work makes sense and shouldn’t pose any unnecessary risk February 22, 2024 Special Board Meeting Agenda Packet - Page 108 of 128 Page 3 of 7 Engineering & Operations Committee Minutes February 7, 2024 Page 3 and feels this is a very efficient process. Chair McGill stated that he is prepared to recommend moving forward based on bringing back more information. Mr. Goel stated that staff is working on a roadmap that will model all improvements and how they are staggered. Chair McGill asked if the model would include the Ultraviolet (UV) Disinfection Replacement project and the secondary project. Mr. Goel said yes. Ms. Gemmell let the Committee Members know that staff will be updating the CEQA citations to include the replacement of an existing public facility. COMMITTEE ACTION: Recommended Board approval. b. Review draft Position Paper to approve a $600,000 contingency project for the Lake Cascade sewer Relocation in Orinda; adopt Resolution No. 2024-XXX making findings and authorizing the General Manager under Public Contract code Sections 20806 and 22050 (B) to execute a construction contract change order in the amount not to exceed $312,000 with Precision Engineering, Inc.; and find that the Project is exempt from the California Environmental Quality Act (CEQA) Mr. Fitch provided an overview of the Position Paper included in the agenda materials. He stated that the Country Club had a project to add grandstands to the tennis courts and other improvements, however due to an existing aerial 8” pipe that runs along the edge of Lake Cascade and an easement, this caused problems with the Country Club’s project. It was determined by Planning and Development that the existing 8” pipe was at the end of its useful life and suggested working with the Country Club and allow their project to move forward. Mr. Fitch stated that the District’s project will be done in two phases. Phase 1 will construct a new 8” sewer, and once completed the County Club can continue with their project. The second phase will be to abandon and remove the existing sewer pipe section that crosses the dam and its support features. In response to Member Wedington’s question about the proper paperwork needed to proceed, Mr. Lopez stated that the easement exchanges are being completed by the Right-of-Way group. Member Wedington asked how long the work will take to complete the new sewer line segment. Mr. Fitch stated the project will take at most four weeks. In response to Member Wedington’s question about whether this work will impact the Walnut Creek project, Mr. Fitch stated this project will not impact the project in Walnut Creek. This was one of the conditions of the February 22, 2024 Special Board Meeting Agenda Packet - Page 109 of 128 Page 4 of 7 Engineering & Operations Committee Minutes February 7, 2024 Page 4 contract, and Precision Engineering, Inc. has confirmed they will bring in a second crew to complete this work. In response to Mr. Bailey’s question regarding how long this project will take, Mr. Lopez stated Phase 1 (install new sewer line segment) will take approximately four weeks. Phase 2 (demolition and removal of the abandoned sewer line) will take a little longer due to the permitting process and will not impact the Country Club’s project. Mr. Bailey asked if any engineering assessments have been done to make sure the dam is not compromised if the piers must be removed. Mr. Lopez stated that this will be determined as the permitting process progresses. In response to Chair McGill regarding what the $600,000 covers, Mr. Lopez stated it is for the entire project. Member Wedington expressed concern over the abandonment cost being low. Mr. Lopez stated it depends on the permitting requirements. In response to Mr. Bailey’s question regarding the location of the piers, Mr. Lopez stated they are in the water. Mr. Bailey recommended that staff not underestimate what it would take to remove them. Mr. Norby stated that the $100,000 is a placeholder, and there is no detail behind that amount at this time. Chair McGill asked if the easement exchange was done. Ms. Gemmell stated that the easement exchange agreement will be completed prior to the start of the project but is not recorded until it is constructed. COMMITTEE ACTION: Recommended Board approval. c. Receive Collection System Operations 2023 Annual Report of Sanitary Sewer Overflows Mr. Seitz reviewed the annual report presentation provided in the agenda materials. In response to Mr. Bailey’s question about how many spills occurred in 2022. Mr. Seitz said there were 22. Mr. Norby and Mr. Bailey commended staff for their hard work in reducing the spills in 2023. Mr. Bailey asked if Locust Avenue in Walnut Creek is cleaned on a monthly basis. Mr. Seitz stated yes, and that area is marked as a priority. A discussion ensued regarding the coordination schedule and Geographic Information System (GIS) mapping system. February 22, 2024 Special Board Meeting Agenda Packet - Page 110 of 128 Page 5 of 7 Engineering & Operations Committee Minutes February 7, 2024 Page 5 Chair McGill requested a presentation of Central San’s GIS Mapping system. Chair McGill requested a trip to the Collection Systems Operations (CSO) office for a demonstration of the spill simulator. Mr. Bailey suggested having a Committee meeting at the CSO office. In response to Mr. Bailey’s question regarding the agreement with Riverwatch. Mr. Seitz stated that the District is in the third or fourth year of the agreement and Central San is the first agency to receive a 10-year agreement. Member Wedington asked for more information regarding Riverwatch. A discussion ensued regarding Riverwatch. Mr. Seitz responded to all questions and observations posed by the Committee. Overall, the Committee was extremely satisfied with the work performed to date. COMMITTEE ACTION: Recommended Board approval. 5. Other Items a. Receive mid-year update on Fiscal Year 2023-24 Capital Improvement Budget Due to time constraints, this item was not heard. COMMITTEE ACTION: The Committee requested that this item be postponed until the March 6, 2024 meeting. b. Hold a discussion with the Committee regarding Change Order Log, Quarterly Reports, and Bid Schedules to compare budgeted vs. actual costs including project status, close-outs, and status of current service agreements Due to time constraints, this item was not heard. COMMITTEE ACTION: The Committee requested that this discussion be postponed until the March 6, 2024 meeting. 6. Announcements None. February 22, 2024 Special Board Meeting Agenda Packet - Page 111 of 128 Page 6 of 7 Engineering & Operations Committee Minutes February 7, 2024 Page 6 7. Suggestions for Future Agenda Items a. Receive list of upcoming agenda items and provide suggestions for any other future agenda items • Presentation of Central San’s GIS Mapping system. • Future field trip to the CSO office. • Receive the Mid-year update on Fiscal Year 2023-24 Capital Improvement Budget • Hold a discussion with the Committee regarding Change Order Log, Quarterly Reports, and Bid Schedules to compare budgeted vs. actual costs including project status, close-outs, and status of current service agreements. COMMITTEE ACTION: Received the list and provided input to staff. 8. Future Scheduled Meetings Wednesday, March 6, 2024 at 8:30 a.m. Wednesday, April 3, 2024 at 8:30 a.m. Wednesday, May 1, 2024 at 8:30 a.m. 9. Adjournment – at 10:40 a.m. February 22, 2024 Special Board Meeting Agenda Packet - Page 112 of 128 Page 7 of 7