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Item 12.b.
CENTRALSAN
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CENTRAL CONTRA COSTA SANITARY DISTRICT
December 17, 2020
TO: HONORABLE BOARD OF DIRECTORS
FROM: KATIE YOUNG, SECRETARYOF THE DISTRICT
SUBJECT: DECEMBER 1, 2020 - ENGINEERING & OPERATIONS COMMITTEE -
CHAIR NEJEDLYAND MEMBER PILECKI
Attached are minutes of the above Committee meeting.
ATTACHMENTS:
1. Minutes of 12-01-20 meeting
December 17, 2020 Regular Board Meeting Agenda Packet- Page 169 of 173
Page 2 of 5
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, December 1, 2020
2:00 p.m.
21d Floor Conference Room
5019 Imhoff Place
Martinez, California
(All attendees participated via videoconference)
Committee:
Chair Jim Nejedly
Member Tad Pilecki
Staff.
Roger S. Bailey, General Manager
Katie Young, Secretary of the District
Jean-Marc Petit, Director of Engineering and Technical Services
Edgar Lopez, Capital Projects Division Manager
Nitin Goel, Senior Engineer
Amelia Berumen, Senior Administrative Technician
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 2:00 p.m.
December 17, 2020 Regular Board Meeting Agenda Packet- Page 170 of 173
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Engineering & Operations Committee Minutes
December 1, 2020
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3. Public Comments - No public comments.
4. Agenda Items
a. Receive introduction to the Ultraviolet (UV) Disinfection Replacement,
District Project 10012 and the UV Hydraulic Improvements, District Project
10013
Chair Nejedly stated that the UV system was newly installed when he
joined the Central San Board of Directors 24 years ago and, this being his
last Committee meeting, it was almost symbolic to receive an update on
the plans to study and remedy the system's need for replacement and
improvements.
Mr. Petit reviewed the presentation included with the agenda materials,
including a history and overview of the UV disinfection system and
hydraulics. He added that staff is preparing to issue a Request for
Proposal to hire a consultant to assist with condition assessments and
other studies to determine the future of these systems at Central San.
During the presentation, he noted the physical and safety challenges the
current system (circa 1994 technology) imposes on staff and that many
advancements in UV systems have occurred since its original installation,
which would be beneficial for maintenance and energy efficiency.
In response to an inquiry from Member Pilecki as to whether the UV
facility could be part of a recycled water solution or driving factor for the
future Water Exchange project or for indirect/direct potable reuse, Mr. Petit
stated that staff is taking all such scenarios into consideration. Staff is also
reviewing the current UV system, noting that a parallel plant would
possibly downsize some of the system capacity needs. Other factors, such
as nutrient removal as part of the watershed permit, also must be
analyzed. Mr. Petit further added that for the Water Exchange project and
its water quality requirement, the UV system would likely be used as one
component along with other disinfectant solutions, stating that staff will
ensure all needs are reviewed and considered.
Member Pilecki stated that the current road map shown in the
presentation does not mention the recycled water component and that, for
future reference, it would be a good reminder that staff has considered
that factor. Mr. Petit said he would add that information.
Regarding staff safety, Member Pilecki inquired about concerns of light
exposure from the UV system and whether a new system would have a
better solution to deal with such concerns. Mr. Petit replied that the
channels are currently covered with aluminum hatches so that staff does
December 17, 2020 Regular Board Meeting Agenda Packet- Page 171 of 173
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Engineering & Operations Committee Minutes
December 1, 2020
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not have exposure when the lamps are on. He also stated that proper
personal protective equipment is required when replacing or testing the
lamps.
Member Pilecki requested that when looking at other disinfection
processes to also consider the safety component for staff. Mr. Lopez
added that, currently, the maintenance staff must also do a manual
chemical batch cleaning system in order to maintain the lamps and that a
new system, with automated system and cleaning enhancements, would
be a great safety improvement.
Chair Nejedly suggested that staff consider all issues experienced in the
past from various equipment challenges. He said that whatever
components are selected and installed as part of these projects,
consideration should be given to the availability of solid backup parts and
service.
COMMITTEE ACTION: Received the information and approved the
intent of the two projects.
5. Announcements
Mr. Bailey announced that the Board Briefing Book, FY 2020-21 was recently
completed and mailed out to all Board Members on topics that he felt were
important and to provide a glimpse of what staff is working on this fiscal year.
6. Suggestions for Future Agenda Items
a. Receive list of upcoming agenda items and provide suggestions for any
other future agenda items
Member Pilecki noted that he wanted to ensure the matter of the Septic-
to-Sewer Financing Program was not overlooked. Ms. Young replied that
the item is scheduled to be presented to the Board at an upcoming
meeting.
COMMITTEE ACTION: Received the list.
December 17, 2020 Regular Board Meeting Agenda Packet- Page 172 of 173
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Engineering & Operations Committee Minutes
December 1, 2020
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7. Future Scheduled Meetings
Meeting dates for 2021 to be determined
Mr. Petit thanked Chair Nejedly for his unwavering support and the insight
he brought to the Committee. Chair Nejedly thanked staff for all their work
during his tenure.
8. Adjournment— at 2:31 p.m.
December 17, 2020 Regular Board Meeting Agenda Packet- Page 173 of 173