HomeMy WebLinkAbout07. Approve a contingency project in the amount of $450,000 for the Treatment Plant Odor Control Facilities Improvements and authorize the GM to execute a Professional Engineering Services Agreement with Jacobs Solutions, Inc. in the amount of $350,000Item 7.
BOARD OF DI RECTORS
POSIT ION PA PER
M E E T ING D AT E:D E C E MB E R 7, 2023
S UB J E C T: A P P R O V E A C O NT I NG E NC Y P R O J E C T I N T HE A MO UNT O F $450,000 F O R
T HE T R E AT ME NT P L A NT O D O R C O NT R O L FA C I L I T I E S I MP R O V E ME NT S ;
A ND A UT HO R I Z E T HE G E NE R A L MA NA G E R TO E X E C UT E A
P R O F E S S I O NA L E NG I NE E R I NG S E RV I C E S A G R E E ME NT W I T H J A C O B S
S O L UT I O NS , I NC . I N T HE A MO UNT O F $350,000 F O R P L A NNI NG A ND
P R E-D E S I G N S E RV I C E S
S UB M I T T E D B Y:
MI C HA E L C UNNI NG HA M, A S S O C I AT E
E NG I NE E R
I NI T I AT I NG D E PART M E NT:
O P E R AT I O NS-P L A NT O P E R AT I O NS-
P R O C E S S C O NT R O L
RE V IE WE D B Y:NI T I N G O E L , O P E R AT I O NS O P T I MI Z AT I O N D I V I S I O N MA NA G E R
G R E G NO R B Y, D E P UT Y G E NE R A L MA NA G E R - O P E R AT I O NS
R oger S . B ailey
General Manager
IS S UE
T he B oard of D irectors (B oard) authorization is required for the General Manager to execute a
professional engineering services agreement or initiate a new project, Treatment Plant Odor Control
F acilities I mprovements (Project), not listed in the C apital I mprovement Budget in an amount greater than
$200,000.
B AC K G RO UND
C entral San reduces treatment plant (plant) odors by using several types of odor control f acilities.
C hemical towers neutralize the odors by spraying sodium hypochlorite against foul air and are located near
the headworks, solids conditioning building, and primary clarif iers. Other odor control f acilities include a
biofilter f or dissolved air flotation tanks, activated carbon vessel for emergency sludge load out, and
foggers that mist an odor neutralizing liquid near the primary sedimentation and aeration tanks.
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T he odor control f acilities have perf ormed well over many years due to exceptional operation and
maintenance practices. However, most of the current facilities have been in service f or over twenty-five
years, and some of the infrastructures are showing signs of deterioration. Central S an’s Odor Control
F acilities Plan was originally completed in 1998 and last updated in 2006.
Two projects are listed in the 10-Year Capital I mprovement P lan to address the deficient inf rastructure f or
the plant odor control facilities, as f ollows:
1. Odor Control R epairs, S olids C onditioning B uilding - project goal is to address near-term
improvements and has a budget of $1.5 million dollars beginning in F iscal Year (F Y) 2024-25; and
2. Odor Control I mprovements Phase 2 - project budget of $15 million and beginning in F Y 2027-28.
Staf f is proposing to initiate the planning for these projects and update the Odor C ontrol F acilities P lan this
F Y while in parallel, completing detailed condition assessment of existing equipment and exploring ways to
optimize operations and maintenance costs. T he P roject will then compile results as a comprehensive
asset evaluation which estimates remaining usef ul life based on the condition of the inf rastructure, capacity,
regulatory, and sustainability/optimization drivers. An alternatives analysis will then be completed to
compare rehabilitation or replacement through a benefit cost evaluation. F ollowing the completion of the
analysis, a preliminary design will be developed for all near-term improvements. T his project will also
coordinate with other ongoing projects in construction such as S olids Handling F acility I mprovements -
Phase 1 A , District P roject 7348.
On S eptember 6, 2023, a formal R equest for Proposal (R F P) was publicly advertised, and two (2)
consulting firms responded with proposals. After evaluating the proposals based on qualif ications and
overall ratings, staf f invited both consulting f irms, B rown and C aldwell and J acobs S olutions, I nc. (J acobs),
to participate in an interview on October 30, 2023. A f ter the conclusion of the interviews, J acobs was
selected and scored as the top proposer and is, theref ore, recommended for the P roject.
T he P roject scope of work includes the f ollowing:
1. C ondition A ssessments: Evaluate and provide a detailed condition assessment of the existing odor
control facilities to estimate the remaining useful lif e. A dditionally, identify improvements which could
extend the remaining usef ul life and improve saf ety.
2. S ampling, Model Update, and Optimization E valuation: Perf orm f ield sampling to update models
from the 2006 Odor Control F acilities Plan. Evaluate opportunities to improve energy and chemical
dosing ef f iciency.
3. Comprehensive Asset E valuation: Estimate the remaining usef ul life based on aging inf rastructure,
capacity, regulatory, and sustainability/optimization drivers.
4. Alternatives Evaluation: E valuate alternatives f or equipment rehabilitation to extend the remaining
usef ul life versus rehabilitation. D evelop phasing plan for equipment rehabilitation and replacement.
5. P re-D esign R eport: Develop 10% pre-design of the selected alternative and cost estimate.
6. Detailed Design and E ngineering Services during Construction: I ncluded as part of the R F P
process for future work, however, will not be included in the agreement and will require future B oard
actions based on the scope of work recommended by staf f .
C oncurrently, C entral San staff will negotiate an additional scope of work with J acobs to develop planning
level concepts f or minimizing odor impacts f rom potential f uture conditions such as an increase in
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wastewater f low to the treatment plant af ter a possible merger with Mt. View Sanitary District, higher
organic strength of wastewater f rom water conservation, and service area population growth. A lso, State
R oute 4/I nterstate 680 interchange improvements under the final design and construction by Contra Costa
Transportation A uthority and C alif ornia Department of Transportation will lead to vehicle traf f ic being closer
to the treatment plant f ence line, etc. T he additional scope of work will help develop the Odor Control
F acility Plan new equipment design criteria and project phasing plan. T he additional scope of work will be
within the General Manager authorization limit of $200,000.
ALT E RNAT I V E S /C O NS I D E RAT IO NS
T he B oard may elect to stay on the current plan for the P roject, which starts in F Y 2024-25. T his is not
recommended as staf f plans to do a comprehensive evaluation and assessment, which requires time and
starting early is benef icial to addressing any deficient equipment or inf rastructure. Modifications or
improvements to the odor control f acilities require permitting from the local air authority and based on
previous experience, obtaining permits can take significant time.
F I NANC IAL I M PAC T S
T he total estimated cost for the planning and preliminary work for the P roject is $450,000, which includes
consultant services for $350,000, staf f time, and contingency for additional testing services. F inal design
services and engineering services during construction are not currently budgeted under this agreement.
C entral San will negotiate those services with J acobs and request approval f rom the Board as the P roject
progresses. T he total estimated placeholder project cost may reach up to $16.5 million, and likely to be
phased as projected in the 10-Year Capital I mprovement P lan. T he placeholder costs f or project(s) will be
updated after the planning phase.
C O M M I T T E E RE C O M M E ND AT IO N
T he E ngineering and Operations Committee reviewed this item at its meeting on November 13, 2023 and
recommended approval.
RE C O M M E ND E D B O ARD AC T I O N
Staf f recommends the Board approve a contingency project in the amount of $450,000 f or the Treatment
Plant Odor Control F acilities I mprovements; and authorize the General Manager to execute a prof essional
engineering services agreement with J acobs S olutions, I nc. in an amount of $350,000 f or planning and
pre-design services.
Strategic Plan Tie-I n
G O A L S I X: I nfrastructure Reliability
Strategy 1 - Manage assets optimally, Strategy 2 - Execute long-term capital renewal and replacement program
G O A L S E V E N : I nnovation and Agility
Strategy 2 - I mplement organization-wide optimization
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