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HomeMy WebLinkAbout16.b. Minutes-Engineering & Operations Committee 01-17-18 Page 1 of 16 Item 16.b. I Central Contra Costa Sanitary District February 1, 2018 TO: HONORABLE BOARD OF DIRECTORS FROM: DONNA M.ANDERSON, PROVISIONAL SECRETARYOF THE DISTRICT SUBJECT: JANUARY 17, 2018 - ENGINEERING & OPERATIONS COMMITTEE - CHAIR CAUSEYAND MEMBER MCGILL Attached are minutes of the above Committee meeting. Strategic Plan Tie-In GOAL ONE:Provide Exceptional Customer Service Strategy 1 - Foster Customer Engagement and Awareness ATTACHMENTS: 1. Minutes of 01-17-18 Engineering & Operations Committee Meeting February 1, 2018 Regular Board Meeting Agenda Packet- Page 129 of 148 Page 2 of 16 Afvi CENTRAL SAN CONTRACENTRAL • DISTRICT 5019 IMHOFF SPECIAL MEETING OF THE BOARD OF DIRECTORS: CENTRAL CONTRA COSTA JAMES A.NEJEDLY SANITARY DISTRICT President ENGINEERING & OPERATIONS DAVIDWILLIAMS Presiddent Pro Tem COMMITTEE PAULH CAUSEY MICHAEL R.MCGILL TAD J PILECKI MINUTES PHONE: (925)228-9500 FAX.- (925)372-0192 Wednesday, January 17, 2018 www.centralsan.org 9:00 a.m. 2nd Floor Conference Room 5019 Imhoff Place Martinez, California Committee: Chair Paul Causey Member Mike McGill Staff. Donna Anderson, Provisional Secretary of the District (left after Item 3.) Jean-Marc Petit, Director of Engineering and Technical Services Emily Barnett, Communication Services & Intergovernmental Affairs Manager (arrived during Item 5.b.) Edgar Lopez, Capital Projects Division Manager Neil Meyer, Plant Maintenance Division Manager (left after Item 5.b.) Sasha Mestetsky, Senior Engineer Clint Shima, Senior Engineer (left after Item 5.b.) Doug Little, Plant Operations Superintendent (left after Item 5.b.) Amal Lyon, Accountant Cindy Granzella, Senior Administrative Technician 1. Call Meeting to Order Chair Causey called the meeting to order at 9:04 a.m. 2. Public Comments None. February 1, 2018 Regular Board Meeting Agenda Packet- Page 130 of 148 Page 3 of 16 Engineering & Operations Committee Minutes January 17, 2018 Page 2 3. Future Scheduled Meetings a. Confirm remaining 2018 Engineering & Operations Committee meeting dates COMMITTEE ACTION: Confirmed meeting dates. 4. Items for Committee Recommendation to Board a. Review draft Position Paper authorizing the General Manager to execute professional engineering services agreements with TJC and Associates, Inc. and Complete Project Solutions, Inc., in the amount of$150,000 each, to provide as-needed structural engineering services for capital improvement projects Mr. Lopez explained that the amount is higher than previous years due to more projects, and the decision to work with two firms was for improved availability. COMMITTEE ACTION: Reviewed and recommended Board approval. 5. Other Items a. Receive Capital Projects Division Quarterly Report (October to December 2017) on Capital Projects, Active Consultant Contracts, Change Order Log, and Schedule of Bids and Awards Mr. Lopez explained that the report gives an update on the status of contracts. He stated that going forward, the project management information system (PMIS) will eventually replace the current reports. COMMITTEE ACTION: Received the report. b.* Receive an update on the Filter Plant and Clearwell Projects This item was taken out of order, following Item 2. Mr. Petit stated that this was an informational item, and no action was needed at this time. Mr. Lopez provided a presentation to review the current condition of the Clearwell cover, which has deteriorated due to heavy rains and drain failure (attached). Chair Causey asked what staff may do differently to avoid this happening again. Mr. Petit stated that staff is conducting further investigation for that very reason. He explained that the Clearwell is a key part of the February 1, 2018 Regular Board Meeting Agenda Packet- Page 131 of 148 Page 4 of 16 Engineering & Operations Committee Minutes January 17, 2018 Page 3 infrastructure, and the repair is necessary. Mr. Lopez added that a temporary fix will be necessary before a permanent solution is found. Mr. Lopez explained that staff has already raised the cover, and patches will not work on the tears. Chair Causey asked about the integrity of the liner. Mr. Little stated that it will need to be checked, but it should be able to withstand the temporary cover, and will most likely need to be replaced when the cover is replaced. Chair Causey asked if the east and west cells float together. Mr. Little clarified that the two cells are separate from one another. Occasionally, water has been pumped from the east cell to the west, but otherwise the unused cell is filled with rain water. Mr. Petit explained that the next immediate steps are to issue several requests for proposals (RFPs): 1) for consultant selection to design the filter and Clearwell rehabilitation project, 2) to procure a temporary cover for the west cell, and 3) for west Clearwell draining and cleaning. He asked if the Committee Members would allow staff to bring a Position Paper directly to the Board without Committee recommendation if the quotes are ready before the next Committee meeting. Chair Causey was agreeable to that as long as the finances are clearly explained. COMMITTEE ACTION: Received the update. C.* Receive an update on the emergency sewer repair at The Willows Shopping Center in Concord Mr. Lopez reviewed a presentation regarding the January 8, 2018 sewer failure due to a corroded pipe (attached). Mr. Petit noted that it took staff one week from time of notification to complete the replacement as Central San was in control of the repair as compared to emergency sewer repair projects last year associated with storm drain failure where other agencies were leading the effort. COMMITTEE ACTION: Received the update. d. Receive list of Scheduled/Parking Lot items COMMITTEE ACTION: Received the information. 6. Announcements a.* Mr. Petit presented a slide showing the upcoming projects to be discussed at future Committee meetings (attached). He stated that a pump station tour will be arranged as well. February 1, 2018 Regular Board Meeting Agenda Packet- Page 132 of 148 Page 5 of 16 Engineering & Operations Committee Minutes January 17, 2018 Page 4 a. Ms. Barnett announced that she attended the Orinda City Council meeting the night before, and there was a discussion on lane closures in major roadways, which was prompted from a large project that East Bay Municipal Utility District (EBMUD) oversaw. Initially, the Council was to review a proposal to move work to nights and weekends, but instead a discussion was had on policy. The decision was to handle each project on a case-by-case basis. Central San was complimented on its communication with customers. 7. Suggestions for future agenda items Chair Causey requested an update on the recycled water refinery project. 8. Adjournment— at 10:36 a.m. * Attachment February 1, 2018 Regular Board Meeting Agenda Packet- Page 133 of 148 Page 6 of 16 Item 5.b. (Committee Handout) CLEARWELL COVER Engineering & Operations Committee January 17, 2018 Meeting Presented by Edgar J. Lopez, PE Capital Projects Division Manager and Jean-Marc Petit Director of Engineering and Technical Services ISSUES-BACKGROUND Clearwell stores recycled water (ReW) Only East Cell has been used to store ReW East Cell has a membrane cover West Cell has never been used, no cover Filter Project currently identified in the CIB Clearwell cover replacement identified in CWMP — Included in CIP in four years Last year heavy rain and drain failure accelerated deterioration of cover 1 1 February 1, 2018 Regular Board Meeting Agenda Packet- Page 134 of 148 Page 7 of 16 EXISTING REW FACILITIES ' � Clearwell FIN Fill th - Filter Plant CLEARWELL COVER PICTURE JUNE 2014 West Cell without cover East Cell with cover j 2 February 1, 2018 Regular Board Meeting Agenda Packet- Page 135 of 148 Page 8 of 16 PREMATURE TEAR AROUND PERIMETER R t COVER INSPECTION .JANUARY 2018 February 1, 2018 Regular Board Meeting Agenda Packet- Page 136 of 148 Page 9 of 16 COVER CONDITION AFTER INSTALLATION OF INNER TUBES 1 1 4 February 1, 2018 Regular Board Meeting Agenda Packet- Page 137 of 148 Page 10 of 16 PRELIMINARY FINDINGS Cover needs to be replaced Cover replacement to be included in Filter Plant Rehabilitation project Need to provide temporary fix on cover Need to commission the West Cell to make repairs to east side Working on minimizing risk in meeting Title 22 and supplying ReW to plant and Zone 1 Estimated project cost this Fiscal Year $900k 1 FINDINGS FROM COVER INSPECTION Membrane Cover: • Cover remains in poor shape • About fourteen inner tubes are inflated to hold the cover up Drain Valve: - • This valve appears to be holding and the Clearwell __ _-•-- « sump at Basin Cover Drain Valve • The new PVC drain assembly appears to be functioning I 5 February 1, 2018 Regular Board Meeting Agenda Packet- Page 138 of 148 Page 11 of 16 NEXT IMMEDIATE STEPS Issuing RFPs/Bids: Clearwell dewatering/cleaning for west cell Possible purchase of floating balls for temporary west cell cover oil Consultant selection for Filter Plant and Clearwell Improvements Design USE OF FLOATING BALLS FOR TEMPORARY COVER S Floating Ball act as a floating covers and can be used to: Reduce evaporation from a reservoir -Shade water from sunlight to prevent algae growth Cover water.which deters waterfowl from entering the reservoir and nesting in the water or other fluid _=... Reduce water treatment chemical use ' E: February 1, 2018 Regular Board Meeting Agenda Packet- Page 139 of 148 Page 12 of 16 QUESTIONS? 7 February 1, 2018 Regular Board Meeting Agenda Packet- Page 140 of 148 Page 13 of 16 Item 5.c. (Committee Handout) EMERGENCY SEWER REPAIR WILLOWS SHOPPING CENTER UPDATE Engineering & Operations Committee January 17, 2018 Meeting Presented by Edgar J. Lopez, PE Capital Projects Division Manager SEWER REPAIR UPDATE On Monday, January 8, 2018, Collection System staff notified Capital Projects of sewer failure during routine cleaning at the Willows Shopping Center in Concord The Willows contains several restaurants and businesses Property management and adjacent business were notified immediately Mountain Cascade, Inc. (Grayson Creek Contractor) started the next day and were fully mobilized Wednesday, January 10 Repair includes replacement of— 50 feet of sewer, one manhole, and special connection to 78-inch RCP As of Monday, January 17, repair complete No businesses impacted during construction Currently restoring landscape and pavement February 1, 2018 Regular Board Meeting Agenda Packet- Page 141 of 148 Page of 16 01/17/18 REPAIRSEWER UPDATE ;l SEWER REPAIR tom. 1 � .J j.•t.K.; . �c�S UPDATE 1 � � February 1, 2018 Regular Board Meeting Agenda Packet- Page 142 of 148 �cC S Page 15 of 16 01/17/18 THANK YOU: CSO Staff Mark Wenslawski (PM) Plant Operations QUESTIONS? AWL 3 February 1, 2018 Regular Board Meeting Agenda Packet- Page 143 of 148 Item 6. (Committee Handout) ANNOUNCEMENTS PS Project Update: Five PS under preliminary design Board Member tour Meeting with City of Pleasant Hill to debrief on Grayson Creek project Updating 10-yr CIP and 20-Yr CIP Solids Phase 1 project at next meeting Update on 1W project Fxtau r,+.ticom February 1, 2018 Regular Board Meeting Agenda Packet- Page 144 of 148