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Item 20.b.
CENTRALSAN
jdf A- hom
CENTRAL CONTRA COSTA SANITARY DISTRICT
October 21, 2021
TO: HONORABLE BOARD OF DIRECTORS
FROM: KATIE YOUNG, SECRETARYOF THE DISTRICT
SUBJECT: OCTOBER 12, 2021 - ENGINEERING & OPERATIONS COMMITTEE -
MEMBER LAURITZEN AND PRESIDENT PILECKI (ALTERNATE)
Attached are minutes of the above Committee meeting.
ATTACHMENTS:
1. Minutes of 10-12-21 meeting
2. (Handout) Item 5.a. Presentation from meeting
October 21, 2021 Regular Board Meeting Agenda Packet- Page 370 of 382
Page 2 of 13
CENTRAL SAN
CENTRAL CONTRA COSTA SANITARY DISTRICT 5019 IMHOFF PLACE, MARTINEZ, CA 9A553-437
REGULAR MEETING OF THE BOARD oFDrnECTAD J.PILECKILECK
CENTRAL CONTRA COSTA President
SANITARY DISTRICT DAPIDR. wILLIAem
President Pro Tem
ENGINEERING & OPERATIONS BARBARA D.HOCKETT
COMMITTEE MARIAH N.LAURITZEN
MICHAEL R.MCGILL
MINUTES PHONE: (925)228-9500
FAX.- (925)372-0192
Tuesday, October 12, 2021 www.centralsaii.org
11:00 a.m.
(All attendees participated via videoconference)
Committee:
Acting Chair Tad Pilecki (alternate for Chair D. Williams)
Member Mariah Lauritzen
Staff.
Roger S. Bailey, General Manager (joined during Item 4.a.)
Katie Young, Secretary of the District
Steve McDonald, Director of Operations
Jean-Marc Petit, Director of Engineering and Technical Services
Danea Gemmell, Planning and Development Services Division Manager (joined during Item 4.a.)
Edgar Lopez, Capital Projects Division Manager
Mark Wenslawski, Associate Engineer (left after Item 4.a.)
Russ Leavitt, Engineering Assistant III
Amelia Berumen, Assistant to the Secretary of the District
1. Notice
This meeting was held virtually in accordance with the Brown Act provisions
stipulated in Assembly Bill (AB) 361 and adopted by the Central San Board of
Directors on September 30, 2021 via Resolution 2021-052, effective for the month
of October 2021. The agenda included instructions for options in which the public
could participate in the meeting.
2. Call Meeting to Order
Acting Chair Pilecki called the meeting to order at 11:00 a.m.
October 21, 2021 Regular Board Meeting Agenda Packet- Page 371 of 382
Page 3 of 13
Engineering & Operations Committee Minutes
October 12, 2021
Page 2
3. Public Comments
No public comments.
4. Items for Committee Recommendation to Board
a. Review draft Position Paper to approve the Outfall Monitoring Improvements,
District Project 100018 for California Environmental Quality Act (CEQA) and
Regulatory Permitting purposes, including the filing of a Notice of Exemption
for the project
Mr. Lopez provided a broad overview of the project and some delays that
were encountered. He noted the project was included in the Capital
Improvement Budget (CIB) last year and that the intent of this request is
focused primarily on CEQA processes.
Acting Chair Pilecki recollected prior discussions about potentially
relocating the discharge point and selling the current right-of-way for
landfill purposes. He noted the District continues to expend funds for
Outfall improvements and inclinometers. Mr. Petit acknowledged this topic
and stated it remains in the long-term plan to evaluate; however, it would
be an expensive endeavor to relocate the pipe. He stated there is no
short-term plan to change the Outfall due to permit or cost, and that
relocating could mean stricter discharge permit requirements because it
would be considered a shallow discharge and likely be more expensive
overall.
Mr. Petit indicated that Central San used the creek discharge during the
recent Outfall Piping Renovation project under some terms of the current
discharge permit, but only as a temporary measure. Member Lauritzen
inquired about the temporary discharge permit and asked whether
additional treatment was required. Mr. Petit replied the only requirement
was to monitor the discharge both up and down stream, but no additional
treatment was necessary. In response to how long the temporary
discharge occurred, Mr. Wenslawski confirmed it was a four-month
duration that began in early July and ceased by early October.
Mr. Wenslawski also clarified that this Outfall project is much smaller than
the last Outfall Improvements project and there would be no discharge
through Basin B.
COMMITTEE ACTION: Recommended Board approval.
October 21, 2021 Regular Board Meeting Agenda Packet- Page 372 of 382
Page 4 of 13
Engineering & Operations Committee Minutes
October 12, 2021
Page 3
5. Other Items
a.* Receive a verbal update on the State Revolving Fund (SRF) Loan status
for capital improvements
Mr. Petit reviewed the attached handout presentation. Although the Solids
Handling Facility Improvements (Solids Project) is not moving forward at
the overall $260 million total project cost, staff intends to continue with
certain elements of that project to maintain functionality of the Solids
Conditioning Building.
In order to keep the facility operating properly under the air permit for at
least the next ten years, staff plans to repackage some of the essential
project elements into a smaller project (e.g., installation of wet scrubbers,
centrifuges and cake pumps; hearth repairs and burner controls). Funds
will be needed to complete these necessary tasks; therefore, it is
recommended to move forward with the SRF loan agreement.
Mr. Petit mentioned a Request for Proposal was recently released to the
consultant community to obtain assistance with the long-term plan and
predesign for biosolids handling and disposal facilities, including anaerobic
digesters, and potentially decommissioning the furnaces in the next
decade.
A few weeks ago, staff received the initial$173.1 million SRF Loan
agreement for execution. Staff contacted the State Water Board about the
current status of the Solids Project and the intension to proceed forward
with a smaller project. The state representatives advised to sign the loan
agreement and amend the new loan amount, when bids for the smaller
project are known, as part of the paperwork that is required to finalize the
loan.
Staff noted they also inquired about the potential installation of digesters
as part of the repackage effort. The state declined since it was not a part
of the original Solids Project.
Mr. Bailey clarified that although the Board authorized him to sign the loan
documents, he thought it was important to advise that even though the
Solids Project bids were rejected, staff intends to continue with the
execution of the loan in order to address critical elements of the Solids
Project mentioned and make use of the loan advantages.
Ms. Gemmell stated that the loan sequence has followed a traditional
process, which is now addressing a new reduced project. The amount
would be determined at time of bid and the final budget amount would
October 21, 2021 Regular Board Meeting Agenda Packet- Page 373 of 382
Page 5 of 13
Engineering & Operations Committee Minutes
October 12, 2021
Page 4
need to be submitted to lock-in the amount, which will be less than the
pre-approved amount.
Member Lauritzen inquired about the availability of the loan should bids
come in high once again. Mr. Petit replied that the state prefers a single
project with a single contractor for ease of accounting and reconciliation.
With the intent to repackage at a smaller scale, he opined it would likely
garner better interest and competitive pricing. Ms. Gemmell added that,
although unlikely, should bids come in high and were reasonably justified,
a higher amount could be sought.
Acting Chair Pilecki inquired about amending the cashflow for the CIB
figures shown on slide 5. When the Finance Committee reviews
expenditures, he does not want to see a disparity with the lower projected
numbers in order to meet the CIB 90% spending goal. Mr. Petit confirmed
the budget is representative of today's figures and staff is working to
rebalance the cash flow. Mr. Lopez clarified that the repackage effort
would likely be about $80 million overall; thus, there will not be
expenditures of$21 million this year. Timing of the bid repackage and
outcome plays into the rebalance as well.
Ms. Gemmell responded to other questions posed by Acting Chair Pilecki.
She said that of the $20 million expended to date on the Solids Project,
about $16 million could be reimbursed for previous planning and design
costs on the Solids Project, via the SRF loan, on top of the total costs of
the repackage effort. Lastly, she confirmed staff would resubmit for an
additional SRF loan for digesters if moved forward.
COMMITTEE ACTION: Received the information.
b. Receive update on major construction projects within the Fiscal Year
2021-22 Capital Improvement Budget
Mr. Lopez reviewed the information provided in the agenda materials that
focuses on larger construction projects to provide an awareness of major
work during the year. The following items denote updates of particular
interest.-
Filter
nterest.Filter Plant and Clearwell Improvements-Phase 1A: Although there has
been some delay with receipt of electrical gear, there has been no scope
delay; the project is expected to stay on target.
Secondly, the dirt excavated from the basin where the new Clearwells
were erected was repurposed near the construction site to raise the levee
over Basin C, which runs parallel to Pacheco Slough. The concept is to
raise the levee to meet current standards for flooding and focus on sea
October 21, 2021 Regular Board Meeting Agenda Packet- Page 374 of 382
Page 6 of 13
Engineering & Operations Committee Minutes
October 12, 2021
Page 5
level rise. This work already provided a significant difference and was able
to be done ahead of the Flood Control Project (currently at 65% design).
Acting Chair Pilecki applauded staff for the great idea to reuse good fill
and address long standing concerns of the Pacheco Slough area.
Pump Station Upgrades-Phase 1: Mr. Lopez noted that with the
installation of new submersible pumps and grinders, it has already made a
significant difference. Staff has not had to de-rag or de-clog the pumps as
normally encountered this time of year.
Mr. Lopez added that a large portion of work was attributed to electrical
gear, which was ordered and purchased well before shortages occurred
that have been experienced of late on other projects.
Lastly, Mr. Lopez applauded the efforts of the contractor and electrical
sub-contractor. This is a very difficult job and both contractors have
provided the resources to keep the project moving forward.
Collection System Renovations: Mr. Lopez reviewed the list of projects
completed by staff, especially during the challenges of the pandemic, city
paving coordination, and splitting projects for the wet weather season. It
was a notable effort by staff which does inhouse design and construction
management. Member Lauritzen gave praise to staff on getting projects to
completion and thanked them for all the hard work.
Pacheco Boulevard Sewer Replacement: Although a smaller project,
this particular task was brought before the Board due to shared side sewer
issues. The project is now complete which dealt with a lot of older utilities
and concrete used in the roadways. It was a challenge for staff to
complete, but no major disruptions were encountered and service was
successfully installed to current standards.
Influent Pump Electrical Improvements: This multi-year project, which
has faced some challenges, is on target to meet schedule milestones this
year. Mr. Lopez noted the contractor has been excellent, provides
solutions, and had worked well with staff and the challenges of
constructing within a working facility. In addition to equipment and wet well
work, new walkways and gates were also installed. Acting Chair Pilecki
complimented staff with a cleaver solution on the gate installation which
likely saved the District millions of dollars.
Electric Blower Improvements and Pipin_g Renovations. The
contractor on the project mentioned above is also the contractor for this
critical project. Mr. Lopez noted this work is not a stranded asset situation.
A well thought out and planned project; the contractor is already planning
October 21, 2021 Regular Board Meeting Agenda Packet- Page 375 of 382
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Engineering & Operations Committee Minutes
October 12, 2021
Page 6
on their installation of the blowers that will likely begin witness testing in
December. The piping renovation piece of the project, which addresses
various areas throughout the plant, is a critical project for Operations. The
project is moving forward on schedule.
COMMITTEE ACTION: Received the update.
C. Receive Capital Projects Division Quarterly Report (July to September) on
capital projects, active consultant contracts, change order log, and
schedule of bids and awards
Mr. Lopez noted the bid schedule report shows many intentionally
reflected to-be-determined (TBD) dates in order to provide staff an
opportunity to reevaluate future capital project estimates and status due to
challenges in the construction bid market.
COMMITTEE ACTION: Received the report.
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 the list.
8. Future Scheduled Meetings
Tuesday, November 9, 2021 at 11:00 a.m.
Tuesday, December 14, 2021 at 11:00 a.m.
9. Adjournment— at 11:52 a.m.
* Attachment
October 21, 2021 Regular Board Meeting Agenda Packet- Page 376 of 382
Page 8 of 13
Item 5.a.
(Handout)
J J
�n
STATE REVOLVING FUND (SRF) LOAN
STATUS FOR CAPITAL IMPROVEMENTS
SOLIDS HANDLING FACILITY
IMPROVEMENTS
Engineering & Operations Committee
October 12, 2021
Jean-Marc Petit, P.E.
Director of Engineering and Technical Services
I
SOLIDS HANDLING FACILITY IMPROVEMENTS
TARGETED SCOPE FOR SOLIDS PROJECT
1 2 4 6
a .
MODIFY MULTIPLE AIR POLLUTION NEW ASH ELECTRICAL CENTRIFUGE SOLIDS CONDITIONING
M
EXISTING
ODIFY HEARTH CONTROL HANDLING SYSTEMS DEWATERING BUILDING RETROFIT
SLUDGE FURNACES (NEW WET AND LOADOUT (LIMITED) SYSTEM (LIMITED)
BLENDING/ (SOME HEARTH SCRUBBERS)
STORAGE REPLACEMENT) Z
J x
1
October 21, 2021 Regular Board Meeting Agenda Packet- Page 377 of 382
Page 9 of 13
INSTALLATION OF NEW WET SCRUBBERS
FOR REGULATORY COMPLIANCE
ll
00 ' -
r
■ G
a
Ig
RE-EVALUATE LONG-TERM PATH FOR
SOLIDS HANDLING AT CENTRAL SAN
Phase 1: Proceeding with
some key elements of the Phase 2: Re-Evaluate Long-
Solids Project Term Solids Handling
• Wet Scrubbers Hiring Consultant to
• Centrifuges Evaluate long-term
and Cake and Biosolids, including
Pumps Adding Anaerobic
• Refurbish Digestion and
Multiple Hearth
Biogas Co-Gen
Furnaces
Hearth and
Burner
Controls
* I a
CENTRALSAN
2
October 21, 2021 Regular Board Meeting Agenda Packet- Page 378 of 382
Page 10 of 13
FISCAL YEAR (FY) 2021 -22
CAPITAL IMPROVEMENT BUDGET
Solids Handling Facility Improvements Budget &
Budget-to- FY 2021-22 FY 2022-23 Future FYs Total
Date
$1,000,000 $- $- $- $1,000,000
12,090,000 - - - 12,090,000
Construction 6,894,000 21,000,000 45,000,000 98,000,000 170,894,000
$19,984,000 $21,000,000 $45,000,000 $98,000,000 $183,894,000
qw'
.71
CENTRALSAN
5
STANDARD SRF LOAN SEQUENCE
Sign Initial SRF Bid Project . .
Agreement Contractor
Submit Final
• Loan Budget
Amount Amendment
Finalized Package
- I
CENTRALSAN
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ac
3
October 21, 2021 Regular Board Meeting Agenda Packet- Page 379 of 382
Page 11 of 13
AMENDED CENTRAL SAN SRF
LOAN SEQUENCE
"ed Award to
Budget"($�$1711M) Contract
Reimbursement Submit Final
of Construction 0 Amendment
Payments (LowerAmount) Package
§ ;� ` 7
NEXT STEPS FOR SRF LOAN
APPROVAL OF RESOLUTION
• Notifications to the public in compliance with Government
Code 5852.1
•A declaration of the applicant's authority to enter into the
agreement
•A broad-based blessing of the agreement as being valid
and enforceable in accordance with its terms
•Authorization and direction to the authorized representative
and other relevant officials to enter into the agreement and
perform all acts necessary and proper for executing the
agreement and carrying out its terms
8
--
4
October 21, 2021 Regular Board Meeting Agenda Packet- Page 380 of 382
Page 12 of 13
QUESTIONS?
Alm 9
CENTRALSAN
EXISTING SOLIDS HANDLING INCINERATION
WITH MULTIPLE HEARTH FURNACES
Energy&Waste Emissions
Heat to Steam hS.' Inventory/Controls END USE
'AL OPTIONS
THICKENING DEWATERING LNGoMLO Im
VW5 •• . .
BLENDING INCINERATION INERTASHPr
= By S.bl.puality:
Stable
Ste le
-St°ragerotan Issue
® New Technology , No Market
• NG:Natural Gas � Ex0.9Te1hno1o9y °on"
• LFG:Landfill Gas Newer
DISPOSAL: INERT ASH
10
5
October 21, 2021 Regular Board Meeting Agenda Packet- Page 381 of 382
Page 13 of 13
ADD ANAEROBIC DIGESTION WITH INCINERATION:
(CWMP Solids Phase 2)
Electric
Power for Emissions
Electric Inventory/ControlsEND USE
Blowers OPTIONS
I
THICKENING = DEWATERING
STABILIZATION = INCINERATION INERT ASH
eyProeumoa.iity:
same
deme
-Smrage rut an Issue
® New Technology ' No Market
DG:Digester Gas(Methane) Existing Technology `omm°"
Newer
f
DISPOSAL: INERT ASH (CURRENT PRACTICE)
PROGRESSION OF ANAEROBIC DIGESTION WITH
THERMAL HYDROLYSIS or COMPOST or
ELIMINATE INCINERATORS (CWMP Solids Phase 3)
Electric
ns
Power for �°°°°' t 4*&Waste '
Blowers _ END USE
THICKENING DEWATERING
0
111TAB!ILVATION = CLASS A CAKE
Proauetna.iit,
-mw°moearere amm°mam°r
-30h eolies
I-
PRE-DEWATERING THERMAL
HYDROLYSIS
MEETS 503 REQUIREMENTS: ® New Technology NO Market
PR ALT 1(Time& Existing Technology , Common
Temperature) Newer
-VAR OPT 1(38%VSR)
CLASS "A" CAKE OR GRANULES/PELLETS THERMAL
HYDROLYSIS
6
October 21, 2021 Regular Board Meeting Agenda Packet- Page 382 of 382