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HomeMy WebLinkAbout18.b. Committee Minutes - Engineering & Operations 07-07-2020 Page 1 of 6 Item 18.b. CENTRALSAN jdf A- hom CENTRAL CONTRA COSTA SANITARY DISTRICT July 16, 2020 TO: HONORABLE BOARD OF DIRECTORS FROM: KATIE YOUNG, SECRETARYOF THE DISTRICT SUBJECT: JULY7, 2020 - ENGINEERING & OPERATIONS COMMITTEE - CHAIR NEJEDLYAND MEMBER PILECKI Attached are minutes of the above Committee meeting. ATTACHMENTS: 1. Engineering & Operations Committee Minutes 07-07-2020 July 16, 2020 Regular Board Meeting Agenda Packet- Page 388 of 393 Amended Agenda Page 2 of 6 CENTRAL SAN CENTRAL CONTRA COSTA SANITARY DISTRICT 5019 IMHOFF PLACE, MARTINEZ, CA 9A553-A392 REGULAR MEETING OF THE BOARD OF DIRECTORS: CENTRAL CONTRA COSTA MICHAEL R.MCGILL President SANITARY DISTRICT TAD JPHECKI President Pro Tem ENGINEERING & OPERATIONS PAUL CAUSEY COMMITTEE H. JAMES A.NEJEDLY DAVID R, WILLIAMS MINUTES PHONE: (925)228-9500 FAX: (925)372-0192 www.centralsan.org Tuesday, July 7, 2020 2:00 p.m. 21d Floor Conference Room 5019 Imhoff Place Martinez, California (A11 attendees participated via videoconference) Committee: Chair Jim Nejedly Member Tad Pilecki Guest: Mike Falk, HDR, Inc. Consultants Staff. Roger S. Bailey, General Manager Katie Young, Secretary of the District Jean-Marc Petit, Director of Engineering and Technical Services Alan Weer, Plant Operations Division Manager Danea Gemmell, Planning and Development Services Division Manager Neil Meyer, Plant Maintenance Divison Manager (left after Item 4.b.) Craig Mizutani, Senior Engineer Nitin Goel, Senior Engineer (left after Item 4.b.) Mark Wenslawski, Associate Engineer Nancy Molina, Associate Engineer (left during Item 4.b.) Mark Cavallero, Utility Systems Engineer Christina Gee, Management Analyst Amelia Beruman, Senior Administrative Technician Bruce Dobey, Temporary Utility Systems Engineer July 16, 2020 Regular Board Meeting Agenda Packet- Page 389 of 393 Page 3 of 6 Engineering & Operations Committee Minutes July 7, 2020 Page 2 1. Notice This meeting was held in accordance with the Brown Act as in effect under the State Emergency Services Act, the Governor's Emergency Declaration related to COVID-19, and the Governor's Executive Order N-29-20 issued on March 17, 2020 that allowed attendance by Board Members, District staff, and the public to participate and conduct the meeting by teleconference, videoconference, or both. The agenda included instructions for options in which the public could participate in the meeting. 2. Call Meeting to Order Chair Nejedly called the meeting to order at 2:01 p.m. 3. Public Comments No public comments. 4. Items for Committee Recommendation to Board a. Review draft Position Paper to award a construction contract in the amount of$4,629,300 to Auburn Constructors, LLC, the lowest responsive bidder for the Influent Pump Electrical Improvements, District Project 7328; include award of the additive bid items in the amount of $1,868,000; find that the project is exempt from the California Environmental Quality Act (CEQA); amend an existing agreement with Brown and Caldwell to include engineering services during construction in the amount of$570,000, increasing the cost ceiling to $1,498,152; and authorize a $676,000 transfer from the Capital Improvement Budget Contingency to fund the Project Mr. Petit reviewed the presentation included in the agenda material. There was a discussion regarding the size and capacity of the pumps. In response to a question from Member Pilecki regarding the movement of the influent pumps, Mr. Petit advised that the pumps and motors will be switched when the electrical and variable frequency drives (VFDs) are replaced. It was noted that a sixth 400-horsepower pump will be added. An explanation of the loss of capacity during maintenance that drove the decision to add isolation gates on the suction of four of the pumps under a bid alternative. Chair Nejedly suggested adding an extra security and controls measure when isolating a valve to make sure that the pump operation is not impeded if called to run. Mr. Mizutani explained that the system will have limit switches that indicate when the gates are open and July 16, 2020 Regular Board Meeting Agenda Packet- Page 390 of 393 Page 4 of 6 Engineering & Operations Committee Minutes July 7, 2020 Page 3 closed and stated that it would be possible to add an interlock with the new control system. With the addition of adding the large capacity drain pump for flooding, staff stated that the pump can contain the flow until the gates are closed. Member Pilecki asked about replacing the pumps with a submersible pump as an alternative. Mr. Petit stated that a business case analysis was completed with three scenarios. Upon review, staff decided the gates were a more practical and economic scenario. Member Pilecki requested the following be added to the Position Paper: 1. The engineer's estimate for the additive bid item, and 2. Wording regarding the alternatives reviewed (submersible pumps, etc.) and the reasoning for choosing the gates. Chair Nejedly agreed with Member Pilecki's additions to the Position Paper and both Committee Members recommended Board approval. COMMITTEE ACTION: Recommended Board approval. b. Review draft Position Paper to approve the Electric Blower Improvements - Phase 1 Project in the Fiscal Year 2020-21 Budget and funding from the Steam and Aeration Blower Systems Renovations, District Project 7349; and amend an existing professional engineering services agreement with HDR, Inc. in an amount not to exceed $880,000 to include final design services, increasing the agreement cost ceiling to $3,470,000 Mr. Petit reviewed the presentation included in the agenda material. Mr. Petit answered multiple questions from the Committee Members regarding use of the cogeneration system when power is shut down, the need to take out both waste heat blowers and the amount of steam being produced by the waste heat boilers, and the issues concerning use of the existing electric blower. It was noted that when the new electric blowers are installed, they will be able to be run under emergency power load and adding one or two electric blowers will be available even under a possible power shutdown from PG&E and that would help with this situation. Member Pilecki questioned the timing of the project and requested that more information to be provided to the Board regarding the condition assessments on the Steam and Aeration Blower System Renovation project. Mr. Petit stated that after a condition assessment was completed by HDR, staff believes that regardless of the Solids project, the issue for an electric backup is needed as a backup to steam blowers. There is July 16, 2020 Regular Board Meeting Agenda Packet- Page 391 of 393 Page 5 of 6 Engineering & Operations Committee Minutes July 7, 2020 Page 4 currently a lack of redundancy when the steam system is down for maintenance. Mr. Weer stated that currently the electric blowers cannot handle the air demands in peak demand which is usually dry hot weather. There was a lengthy discussion about the electric blowers and being able to run on standby generators. Multiple division managers discussed the need for redundancy and flexibility in the system and provided their educated opinions on the project. When discussing the financial impacts of the project, Mr. Petit stated that a new project would be created, Phase 1 Blower Project, and the funding would be coming from the steam project. This will allow staff to have the ability to track the specific costs. Member Pilecki requested more information regarding the financial impacts be included in the Position Paper, including the movement of construction dollars from future years forward and how staff plans to address that. Member Pilecki appreciated staff's ability to answer all the questions posed by the Committee Members and stated that he felt a little more comfortable with the project after hearing the presentation. Member Pilecki requested an update on sludge hauling, including the cost ramifications and environmental and safety concerns. He also requested that the results of the steam and blower condition assessment be provided at an upcoming Committee and Board meeting. Chair Nejedly expressed concern about the amount of money being spent, with no rate increase being imposed, and did not feel comfortable recommending the project at this point. COMMITTEE ACTION: Recommended this item be brought to the full Board for review without a supporting Committee recommendation. 5. Other Items a. Receive update on sludge loading and hauling for the Emergency Sludge Loadout Facility Upgrades, District Project 7348A Mr. Petit presented a demonstration video of the emergency sludge loadout facility start up. Central San staff was trained and operated the loading of the sludge during this test. In response to a question from Member Pilecki, Mr. Weer said the District has not received any complaints from neighbors regarding the sludge hauling or odor issues. Mr. Petit stated that staff completed a Request for Proposal (RFP) with a five-year contract for emergency sludge hauling and potential hauling July 16, 2020 Regular Board Meeting Agenda Packet- Page 392 of 393 Page 6 of 6 Engineering & Operations Committee Minutes July 7, 2020 Page 5 during the Solids project. Staff will be reviewing the requests and interviewing those selected next week. COMMITTEE ACTION: Received the update. 6. Announcements None. 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 and provided input to staff. 8. Future Scheduled Meetings Tuesday, August 4, 2020 at 2:00 p.m. Tuesday, September 1, 2020 at 2:00 p.m. Tuesday, October 13, 2020 at 2:00 p.m. 9. Adjournment— at 3:32 p.m. July 16, 2020 Regular Board Meeting Agenda Packet- Page 393 of 393