HomeMy WebLinkAbout12.a. Committee Minutes-Engineering & Operations 04-25-18 Page 1 of 41
Item 12.a.
1
Central Contra Costa Sanitary District
May 17, 2018
TO: HONORABLE BOARD OF DIRECTORS
FROM: KATIE YOUNG, SECRETARY OF THE DISTRICT
SUBJECT: APRIL 25, 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. E&O Committee Meeting Minutes 04-25-18
May 17, 2018 Regular Board Meeting Agenda Packet- Page 447 of 534
CENTRAL SANPage 2 of 41
_
CONTRACENTRAL •STA SANITARY DISTRICT 5019 IMHOFF
BOARD OF DIRECTORS:
REGULAR MEETING OF THE JAMES A.NEJEDLY
CENTRAL CONTRA COSTA President
SANITARY DISTRICT DAV/DR.W/LLIA
President Pro Tent
ENGINEERING & OPERATIONS PAUL H.CAUSEY
COMMITTEE MICHAEL L
J.PILEC
TAD J.P/LECKI
PHONE: (925)228-9500
MINUTES FAX: (925)372-0192
www.centralsan.org
Wednesday, April 25, 2018
9:00 a.m.
2nd Floor Conference Room
5019 Imhoff Place
Martinez, California
Committee:
Chair Paul Causey
Member Mike McGill
Guests:
Bill Taplin, Stantec (left after Item 3.a)
Steve Hyland, Stantec (left after Item 3.a)
Dana Hunt, Vivian House and Associates (present during Item 3.b)
Holly Kennedy, HDR (present during Item 3.b)
Staff.•
Roger S. Bailey, General Manager
Katie Young, Secretary of the District
Ann Sasaki, Deputy General Manager
Phil Leiber, Director of Finance and Administration (left after Item 3.e.)
Jean-Marc Petit, Director of Engineering and Technical Services
Edgar Lopez, Capital Projects Division Manager
Neil Meyer, Plant Maintenance Division Manager
Sasha Mestetsky, Senior Engineer (left after Item 3.e.)
Craig Mizutani, Senior Engineer (left after Item 3.f.)
Clint Shima, Senior Engineer (present during Item 3.f-h.)
Leo Gonzalez, Pumping Stations Supervisor (present during Item 3.b.)
Chathura Abeyrathna, Associate Engineer (left after Item 3.a.)
Nathan Hodges, Assocaite Engineer (present during Item 3.f.)
Amanda Schmidt, Associate Engineer (present during Item 3.b.)
Mark Wenslawski, Associate Engineer (left after Item 3.d.)
May 17, 2018 Regular Board Meeting Agenda Packet- Page 448 of 534
Engineering & Operations Committee Minutes
April 25, 3 of 41
Page 2
1. Call Meeting to Order
Chair Causey called the meeting to order at 9:00 a.m.
2. Public Comments
None.
3. Items for Committee Recommendation to Board
a.* Review draft Position Paper to authorize the General Manager to execute
a professional engineering services agreement in an amount not to
exceed $990,000 with Stantec Consulting Services, Inc, for predesign of
the Recycled Water Clearwell Project and Filter Plant Improvements,
District Project 7361
Mr. Petit presented a revised presentation (attached).
Chair Causey inquired if all the filter cells needed to be repaired. Mr. Petit
responded that based on current recycled water demand that the Filter
Plant may only need two to three of the four cells to be replaced but once
the preliminary design is completed staff will come back to the Board with
a recommendation. Mr. Bailey stated that the determination of the number
of cells needed is based off the capacity versus the demand from the
customers which staff will receive this information from the consultant.
Member McGill stated that the District is not yet serving all locations in
Zone 1 and suggested looking to increase future demand that will be
required to fully serve Zone 1. Mr. Petit stated that staff will provide the
future demand for Zone 1 to Stantec as they are evaluating all future
demands from the Recycled Water Facility.
Member McGill asked if the project was taking into consideration the
future Concord Naval Weapon Development project. Mr. Bailey advised
that staff needs to have a discussion with the City of Concord and Contra
Costa Water District (CCWD) to determine the cost of recycled water and
how it is recovered. Mr. Petit stated that the current plan is for Central San
to produce recycled water for the new development in Concord and
wholesale that recycled water to CCWD. CCWD will be responsible for
distribution of both potable and recycled water to the development.
Financing and payment for this new infrastructure will be paid by the
developer, but the details have not yet been determined.
Chair Causey stated that he hoped that the preliminary design would
possibly eliminate the need for the Clearwell. Mr. Petit stated that the
scope will evaluate all the recycled water facilities, both associated with
the filters and the Clearwell with the goal of having recommendations for
May 17, 2018 Regular Board Meeting Agenda Packet- Page 449 of 534
Engineering &Operations Committee Minutes
April 25, F@W 4 of 41
Page 3
better filter operations and a more efficient chlorine contact and proper
storage volume to serve the needs of the various recycled water
demands.
Mr. Bailey inquired if the proposed conceptual design to repurpose the
Forebays in chlorine contact tank and storage would be sufficient for the
Concord Naval site. Steve Hyland from Stantec stated that they have
identified three potential scenarios that could provide roughly 4MGD of
treatment.
Chair Causey asked if the filter plant was included in the Capital
Improvement Budget (CIB). Mr. Petit responded yes. Mr. Causey asked if
the $22 million includes the Clearwell Cleaning and Repair Project. Mr.
Petit stated that it was a separate project.
Chair Causey asked if the district was going to investigate bond funding
for the $22 million for the project. Mr. Petit stated possibly. Mr. Bailey
stated that in general pipeline replacements can be pay as you go, but the
treatment plant can be a combination of both. He noted that a decision
has not be finalized.
Member McGill appreciated the presentation and recommended Board
approval. Chair Causey concurred.
COMMITTEE ACTION: Reviewed and recommended Board approval.
b.* Review draft Position Paper to authorize the General Manager to amend
an existing agreement with V.W. Housen and Associates under the Pump
Station Upgrades Project, District Project 8436, to include final design
services for the Moraga, Orinda Crossroads, and Flush Kleen Pump
Stations at a cost not to exceed $2.2 million
Mr. Petit presented a revised presentation (attached).
Chair Causey asked questions related to the potential flooding at the
Orinda Crossroads Pump Station. Mr. Petit stated that according to the
preliminary design from the consultant, the pump station is shown to be
located on a FEMA flood map. The flood risk assessment determined that
Orinda Crossroads Pump Station is located within the 100-year flood area
but is not tidally influenced or impacted by sea level rise. San Pablo
Creek, located southeast of the pump station, has been encroached by a
concrete box culvert owned by the City of Orinda with likely inadequate
capacity to convey the entire storm flow during a 100-yr event and has a
one percent annual chance of flood. As a result, flood waters could
possibly back up and begin to pond in the lowest area under the State
Highway 24 overcrossing, resulting in ponding at the pump station. This
phenomenon has never occurred in the history of the pump station.
May 17, 2018 Regular Board Meeting Agenda Packet- Page 450 of 534
Engineering &Operations Committee Minutes
April 25, RM 5 of 41
Page 4
Chair Causey and Member McGill asked for an evaluation of FEMA to see
if there is justification in the risk to the project. Mr. Petit explained that
HDR would review the data for the FEMA map as part of the final design.
Member Causey asked why a new flowmeter for the Concord main
metering station was included as part of this project. Mr. Petit explained
that the existing venturi meter which measures 80-percent of the flow from
the City of Concord is used for billing purposes. Central San and the City
of Concord are concerned about the accuracy of the flowmeter. Mr. Bailey
provided background information on the significance of having accurate
metering data when used for billing purposes. Per the agreement with the
City of Concord, the cost of this meter replacement project will be shared
50% to each Central San and the City of Concord.
Chair Causey raised concern about V.W. Housen and Associates not
having the staffing capabilities to complete the project. Mr. Petit assured
Chair Causey that staff did its diligence in assessing the consultant
experience and qualifications, and that staff has no reservations that V.W.
Housen will complete the job, and that they are teaming with a national
firm, HDR, Inc. and have an experienced electrical engineering firm,
ArcSine Engineering to complete this project. The effort by this team to
deliver the preliminary design to date has exceed staff expectations. In
addition, Mr. Petit stated Dana Hunt, the project manager is a very
experienced engineer, that specializes in pump station design and was the
lead designer, albeit with a different firm on other Pump Station
improvements projects for the District.
Regarding a question of why several pumps stations were combined in a
single project, Member McGill stated that he concurred with staff
recommendations regarding phasing the project, and that designing six
separate pump station upgrades would stretch all components over a
longer period of time, creating an increase in the overall project costs. The
recommendation is to proceed with a two-phase project.
Chair Causey stated that the pump station tours that were attended by him
and Member McGill were extremely helpful in understanding what staff is
trying to complete.
COMMITTEE ACTION: Reviewed and recommended Board approval.
C. Review draft Position Paper authorizing the General Manager to execute a
construction change order with W.M. Lyles Co. to replace a 900-
horsepower Variable Frequency Drive at the Treatment Plant Headworks
Facility, District Project 7327
May 17, 2018 Regular Board Meeting Agenda Packet- Page 451 of 534
Engineering &Operations Committee Minutes - of 41
April 25,
Page 5
Mr. Lopez advised that Maintenance staff continued to repair one of the
Variable Frequency Drive (VFD) that drives one of the large wet weather
900 HP pump motor at Influent Pump Station by the Headworks, but the
repairs have not proven to be reliable. Staff recommends replacing that
VFD and has been working with W.M. Lyles under a change order. Costs
may reach up to $120,000 which exceeds staff's authority and requires
Board authorization.
Chair Causey asked if the price was for purchase and installation. Mr.
Lopez responded yes. The price also includes some contingency if
needed. Member McGill mentioned that he would have expected a higher
cost for replacing a 900 horsepower VFD. Mr. Lopez stated that this is for
replacing the internal drive and not replacing the entire drive.
Replacement with a new VFD could be much higher cost. There is a new
project in the CIB that plans on replacing the motors and VFDs
COMMITTEE ACTION: Reviewed and recommended Board approval.
d. Review draft Position Paper to award a construction contract in the
amount of $3,306,370 to Cratus, Inc., the lowest responsive bidder for the
North Orinda Sewer Renovations, Phase 7, District Project 8445, consider
exemption from the California Environmental Quality Act (CEQA); and
authorize up to a five-percent contingency
Mr. Lopez reviewed the presentation provided in the agenda materials
Member McGill asked what pipe reaming was. Mr. Mestetsky stated that
the method is a cross between horizontal directional drilling and pipe
bursting. It grinds out the pipe prior to inserting the new pipeline.
Member McGill stated that he has some reservations about the 5%
contingency, as this level of contingency is lower than typically requested
by staff on other similar projects. Mr. Lopez stated that the contingency is
only 5% because the remaining program budget is limited and that the
contractor, Cratus, is the same general contractor doing the south Orinda
project that was approved recently. Staff can use either contract for
additional work that may be needed at sites in Orinda. If any urgent
replacement lines arise and additional budget is needed, staff will come
back to the board for authorization and request contingency funds.
Member McGill asked how the trend of the unit price of pipes has been in
the last 2-3 years. Mr. Lopez stated that they have been some increase,
especially price of materials (pipe) and labor. As for this project, the unit
price for sewer replacement stayed consistent with the past three projects
awarded this year. The main reason why costs were a little higher was
due to the creek crossings which can range in costs depending on the
installer and location of the work. Chair Causey asked for staff to provide
May 17, 2018 Regular Board Meeting Agenda Packet- Page 452 of 534
Engineering & Operations Committee Mipt� 7 of 41
April 25, 2
Page 6
the historical total project cost and breakdown as discussed in the past.
This will be presented at future committee meeting.
COMMITTEE ACTION: Reviewed and recommended Board approval.
e. Review draft Position Paper to authorize the General Manager to execute
professional engineering services agreements with Consolidated CM, Inc.
and McMillen Jacobs Associates in an amount not to exceed $350,000
each to provide construction inspection for collection system capital
improvement projects
Mr. Lopez reviewed the information provided in the agenda materials.
Chair Causey inquired about contracting all inspections out. Mr. Petit
stated that the discussion has been risen in the past and the district uses
various sources of inspections. Mr. Lopez stated that an analysis was
competed regarding the cost of district services versus outside services.
As for the Harvest contract, they haven't been able to find qualified staff
for the rates in their contract, staff will continue working to find a collection
system inspector through this company since the rates are very
reasonable. Harvest has done well in providing treatment plant inspectors.
COMMITTEE ACTION: Reviewed and recommended Board approval.
f.* Review draft Position Paper to award a construction contract in the
amount of $748,008 to Platinum Roofing, Inc., the lowest responsive
bidder for the Solids Conditioning Building Roof Replacement, District
Project 7359; consider exemption from the California Environmental
Quality Act (CEQA); and authorize up to a 15-percent contingency
Mr. Lopez presented a revised presentation (attached).
Mr. Lopez advised the Board that since the presentation and position
paper was produced for the E&O meeting packet, that the district has
received a bid protest from the second low bidder. He stated that staff has
reviewed the protest and is working with district legal counsel. He believes
there is no merit and staff will most likely move forward recommending
award of the contract. The protest was based on the low bidder not listing
a plumber or abatement contractor when in fact, the listed demolition
subcontractor is a licensed abatement contractor and will perform the
work. As for plumbing, the work is minor and can be performed below the
listing percentage for subcontractors. Staff will talk to both contractors and
Mr. Lopez believes the protest most likely will be withdrawn.
Member McGill stated that he is glad the project is moving forward and
staff's decision to simplify the project so that contractors with a roofer
May 17, 2018 Regular Board Meeting Agenda Packet- Page 453 of 534
Engineering & Operations Committee Mi tes 8 of 41
April 25, 6
Page 7
license could bid was good to see. Receiving eight bids and competitive
numbers is a job well done.
COMMITTEE ACTION: Reviewed and recommended Board approval.
g. Review draft Position Paper to authorize the General Manager to
purchase natural gas through an existing service agreement with Shell
Energy North America, LP, for the period January 1, 2020 through
December 31, 2020, up to 1,000 decatherm per day at a price not to
exceed $4.00 per dekatherm, excluding transportation service costs
Mr. Shima reviewed the position paper provided in the materials.
Chair Causey asked about purchasing only 1/3 at a time. Mr. Bailey
responded that its more advantageous to the district to purchase smaller
amounts at a time. Mr. Petit stated that its minimizing risks associated with
the fluctuation of commodity pricing for natural gas.
Mr. Shima advised the Board that the district isn't committed to purchase
any amount from Shell,just securing a price and taking advantage of a
lower price.
Chair Causey asked if the district was buying natural gas from anyone
else and Mr. Shima responded no.
Mr. Bailey advised the Board that Contra Costa County is moving to Marin
Clean Energy and that there is an option to opt out of the clean energy. He
stated that staff will bring back the item to a REEP committee meeting for
review and input.
COMMITTEE ACTION: Reviewed and recommended Board approval.
h. Authorize General Manager to enter into a service agreement with
Ironbrook UV to rebuild ultraviolet disinfection equipment.
Mr. Shima requested authorization to enter into a service agreement to
rebuild lamp banks for the next three years valued at$1,100,000. He
stated that rebuilding the existing UV equipment will enhance the
redundancy and reliability of the overall UV system, allowing the
equipment to last until the system is replaced.
Member McGill asked if this agreement is to repair the existing ultraviolet
equipment or for a new system. Mr. Petit stated that it is for a
maintenance contractor for the existing equipment. Member McGill
questioned when the replacement of entire equipment would occur. Mr.
Petit stated that the entire replacement was identified in the master plan
and is in the 10year C/P to be completed in approximately five years.
May 17, 2018 Regular Board Meeting Agenda Packet- Page 454 of 534
Engineering &Operations Committee Miyh 9 of 41
April 25,
Page 8
Member McGill inquired the cost of a full upgrade. Mr. Petit answered
$25,000,000.
COMMITTEE ACTION: Reviewed and recommended Board approval.
4. Other Items
a. Receive list of Scheduled/Parking Lot items
The Committee requested staff bring the following items back to a future
committee meeting:
1) the historical total project cost and breakdown of the North Orinda
Sewer Renovations
2) 10-year historical pipe cost
COMMITTEE ACTION: Received and provided input to staff.
5. Announcements
No announcements.
6. Future Scheduled Meetings
Monday, May 7, 2018 at 9:00 a.m.
Monday, June 11, 2018 at 9:00 a.m.
Monday, July 9, 2018 at 9:00 a.m.
7. Suggestions for future agenda items
None.
8. Adjournment— at 11:14 a.m.
*Attachment
May 17, 2018 Regular Board Meeting Agenda Packet- Page 455 of 534
Item Bate 10 of 41
(Handout)
FILTER PLANT AND CLEARWELL
IMPROVEMENTS PROJECT
Engineering and Operations Committee
April 25,2018
1
Jean-Marc Petit, Director of Engineering and Technical Services
,. Edgar Lopez, Capital Projects Division Manager
Chathura Abeyrathna,Associate Engineer
Capital Projects Division
1. PROJECT DRIVERS AND BACKGROUND
CFNTPAI SAM-
May 17, 2018 Regular Board Meeting Agenda Packet- Page 456 of 534
Page 11 of 41
MASTER PLAN FOR RECYCLED WATER FACILITIES
Fo
CW.0C
7 .
—A-000
CFNTPAI SAN
1�' r
tEGGND
\ F.we:a,: EnNNp Bulla PgMn
The Recycled Water Facilities at the CCCSD
Plant are aged and in need of upgrades
Production is limited
Most equipment is obsolete
Process lacks automation ®:
High chemical usage {
Coordination with future recycled
water projects needed
2
May 17, 2018 Regular Board Meeting Agenda Packet- Page 457 of 534
Page 12 of 41
Fading East CeN - - -
ClearweN Cover
Consolidate Electrical Need Dedicated CI1
Egtripnent,Evaluate Pump Contact Basins
CondNtort ant S¢mg
Filler Rehab
j
Required
Pi*m Catdilwn
Hydrau&Bouleneck
Into Forebays
t
r
lr
- Replace Aging Fier
Buddag EWIwl F
Egwpnent
New Media end
Sian
:r
Nnderdrams Needed
Evaluate Ae Si
7
t r
ValveRepiacemety — = New Flow Mel..,.
or Rebuild _ Instmmentab,
CaKrele Condition I More Efficient Low
Assessment Flow Operation
trnpove Chemical ProgramminglAntomatwn
Mang Upgrades
3
May 17, 2018 Regular Board Meeting Agenda Packet- Page 458 of 534
Page 13 of 41
CLEARWELL
Clearwell cover and liner --
leaking
No baffles
Poor Chlorine Contact Tank
(CCT) performance
Single cell operational:
Maintenance very difficult
Division of Safety of Dams
(DSOD) inspection and
reporting
Seismic Design (need to review) -
FILTERS
Production capacity is limited
Filter media and underdrains
need rehabilitation
Effluent pipes are undersized -r: -
Operation is in a batch mode
L
4
May 17, 2018 Regular Board Meeting Agenda Packet- Page 459 of 534
Page 14 of 41
ELECTRICAL POWER DISTRIBUTION
Equipment is at the end of its
service life
2.300V electrical gear is
outdated and oversized
Electrical equipment is not
consolidated
r —
2. PRELIMINARY DESIGN SCOPE
it
I.
1
5
May 17, 2018 Regular Board Meeting Agenda Packet- Page 460 of 534
Page 15 of 41
Project Scope for Preliminary Design
.� Evaluate immediate actions to
address Clearwell bypass
2 Conduct condition assessment
Review potential Impacts of future;
3 short-and long-term use of recycled
water
4 Develop a planlpredesign to
rehabilitate the Clearwell
5 Develop a planlpredesign to upgrade
F
CONSIDERATIONS FOR REPURPOSING
FOREBAY
Filter Effluent
2_MG ciearwell Secondary Pr a
Applied Water Effluent Pipe
Pumps
Inlet Valve
Structure
0 3 MG CCB each
New Clearwell Pumps 90 Min HRT C
{Backwash,Utility Water. 80%efficiency
Recycled Water Zone 11 1 8 MG Clearwell
F
May 17, 2018 Regular Board Meeting Agenda Packet- Page 461 of 534
Page 16 of 41
Retire
Potential Enh, •1 Existing
Project CWPS
of Title 22 for
current demands
Repurpose
Clearwell and
Upgrade covert to
Filters Eliminate
Filter Plant Future CC8 storage
000
pre-Treatment
Repurpose
Forebays
1 -
Decouple
Forebays Consolidate Electrical
Distribution System
Add
Smaller New Clearwell
Pump Pump Station
(CWPS)
PLANNING FOR THE FUTURE
SHORT— AND LONG—TERM
2z
CRPD
Plant and Zone 1 Plant and Zone
Rase Load with Concord with Water
Demand Reuse Project Exchange
Development Project
(CRPD)
rime
7
May 17, 2018 Regular Board Meeting Agenda Packet- Page 462 of 534
Page 17 of 41
4. PROJECT SCHEDULE
CFNTPAI SAN
OVERALL PROJECT ANTICIPATED SCHEDULE
Activity Anticipated Date T
Request for Proposals from Consultants Issued January 16,2018
Consultant Notice to Proceed May 2018
Alternative Analysis December 2018
Preliminary Design June 2019
Final Design Complete(Bring back to E80) December 2019
Anticipated Bid January 2020
Construction(Preliminary Schedule) March 2020 to June 2022
1
8
May 17, 2018 Regular Board Meeting Agenda Packet- Page 463 of 534
Page 18 of 41
5. PROJECT BUDGET
CIB RECYCLED WATER PROGRAM
PROJECT BUDGETS
Filter Plant and Clearwell
Improvements Estimated Project Cost
Filter Plant Improvements $12,292,000
Clearwell Improvements $10,068,000
Total Estimated Project Cost $22,360,000
e
9
May 17, 2018 Regular Board Meeting Agenda Packet- Page 464 of 534
Page 19 of 41
6. RECOMMENDATIONS
CFNTPAI SA
RECOMMENDED BOARD ACTIONS
Staff recommends the following:
• Approve adding the Recycled Water Clearwell Project
scope of work to the Filter Plant Improvements, District
Project 7361; and
• Authorize the General Manager to execute a professional
consulting services agreement with Stantec Consultant
Services, Inc. in an amount up to $990,000 for predesign
work under the Project.
C.FNTRAI SAN
10
May 17, 2018 Regular Board Meeting Agenda Packet- Page 465 of 534
Page 20 of 41
QUESTIONS
.,�. .;
1
11
May 17, 2018 Regular Board Meeting Agenda Packet- Page 466 of 534
Itelgagb.21 of 41
(Handout)
:s
{ PUMP STATION UPGRADES
Engineering and Operations Committee
April 25,2018
Jean-Marc Petit,Director of Engineering and Technical Services
Edgar Lopez,Division Manager,Capital Projects
Amanda Schmidt,Associate Engineer
Capital Projects Division
Presentation Agenda
.� Project Background and
r
fir - Drivers
1� Preliminary Design Findings
Project Scope and Approac
'Project Phasing and
�'°✓ w Scheme
r 06 Project Budget
-
'0\ Recommendations —M
1
May 17, 2018 Regular Board Meeting Agenda Packet- Page 467 of 534
Page 22 of 41
1 . PROJECT BACKGROUND AND DRIVERS
_i
8�4..
nna. n.b�M
M
" wm.
wrrnn. COLLECTION SYSTEM
d.� PUMPING STATIONS
tot (PS)
Oakland
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■cccsa.c.re..c�r.o..�,. CCC�6/r�m.olWbrr
qua � se�..Fwe s.n nawmrawwEn
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May 17, 2018 Regular Board Meeting Agenda Packet- Page 468 of 534
Page 23 of 41
PROJECT BACKGROUND
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San
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ORINDA CROSSROADS PUMP STATION
• Largest Pump Station for Central San
• Major Concerns: — t .
• Very tight site
• Located in very busy downtown ,
commercial area in Orinda _
• Diesel Engines on wet weather pumps �.
• Consider wet weather pump .
replacement?
• Electrical, instrumentation and controls
improvements and upgrades
• Existing electrical equipment issues
(overheating)
• Evaluate back-up power
• Evaluate adequacy of surge protection
3
May 17, 2018 Regular Board Meeting Agenda Packet- Page 469 of 534
Page 24 of 41
MORAGA PUMP STATION
• Major Pump Station: Second largest PS
for Central San •
• Major Concerns:
• Located in residential neighborhood
near a school and creek
• Diesel engines on wet weather +. -
pumps
• Consider wet weather pump
replacement?
• Electrical, instrumentation and
controls improvements and
upgrades
• Existing electrical equipment issues
• Evaluate back-up power
• Evaluate adequacy of surge
protection
• Evaluate installation of mechanized
grinders(currently manual cleaning)
PRELIMINARY DESIGN FOR
FAIRVIEW AND MALTBY
All pumps reported in operation at Maltby and Fairview
Pump Stations during 2016/2017 wet weather
ts
Master Plan reduced buildout PWWF by 17%
2016/2017 worst case storm
< 10-year, 24-hour storm 201612017 Worst Case 24-hr t
Hydraulic analysis will determine Rainfall 3.06 inches
required upgrades to meet reliable x
firm capacity for buildout PWWFs
Note:10:W,24-hour storm-3.51 inches at Martinez WWR
4
May 17, 2018 Regular Board Meeting Agenda Packet- Page 470 of 534
Page 25 of 41
2. PRELIMINARY DESIGN FINDINGS
DESIGN SERVICES
FOR PUMP
STATION
District Project 8436
UPGRADES
Draft Preliminary Design Report
Review Meeting
January 24,2016 r� �vw r+ousery w.�� F�Z•� tin5inee�ineerinq
5
May 17, 2018 Regular Board Meeting Agenda Packet- Page 471 of 534
Page 26 of 41
PUMP STATION UPGRADES PROJECT
PDR OVERVIEW—TABLE OF CONTENTS
Draft Prelin7inaryDesign Report
Executive Summary
Introduction
Rehabd6ry,and RedundancyCmenas ., �.-�1 ► DESIGN SERVICES
Facd"les FOR PUMP
} ! � a
Martinez Pump Station - STATION
Fa mew Pump Station a.—hbjact sax
UPGRADES
Maltby Pump Station .d Ozsfz Pie1Jm31,411)?Desdgn Report
Flush Ideen Pump Stator.
ReV3eW Al"fi g
•
Concord Main(South)Metering Station
Mange Pump Station
Onnda Crossroads Pump Station
Project Implementation Strategy
Project Design and Construction Schedule
1
FLOOD PROTECTION/
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11
May 17, 2018 Regular Board Meeting Agenda Packet- Page 472 of 534
Page 27 of 41
3. PROJECT SCOPE AND APPROACH
3. Project Scope and Recommendations
A. MORAGA AND ORINDA PUMP STATIONS
1
7
May 17, 2018 Regular Board Meeting Agenda Packet- Page 473 of 534
Page 28 of 41
MORAGA AND ORINDA CROSSROADS PS
EVALUATED ENGINE VS. ALL ELECTRIC OPTIONS
• Recommending All Electric:
New PG&E service
• VFDs for wet weather
pumps
• Larger standby generators
• Reliability F + aP
• Redundancy
• Resiliency ` f
r
"ALL ELECTRIC" INET WEATHER PUMP
ALTERNATIVES AT ORINDA CROSSROADS AND
MORAGA PS INCLUDE:
0 Reuse of Existing Morris
Pump Casings with Smaller
Impellers and New 700 HP
Horizontal Electric Motors
Least Cost Alternative
QInstall New Dry Pit
Submersible Electric Pumps
Provides Increased Resiliency
Moraga Pump Station 3D Visualization
�S
May 17, 2018 Regular Board Meeting Agenda Packet- Page 474 of 534
Page 29 of 41
4. PROJECT PHASING AND SCHEDULE
1
PHASING OF RECOMMENDATIONS
Phase 1:
• Orinda Crossroads PS
Moraga PS
Flush Kleen PS
Concord Metering Vault Improvements
Phase 2:
Martinez PS
o CEQA on Fairview and Maltby PS
9
May 17, 2018 Regular Board Meeting Agenda Packet- Page 475 of 534
Page 30 of 41
PHASING OF RECOMMENDATIONS
• Phase 1:
• Orinda Crossroads PS
• Moraga PS
• Flush Kleen PS
• Concord Metering Vault Improvements
•
•
1.
MORAGA-ORINDA PUMP STATIONS
• Facilities deliver majority of
wastewater flows from Orinda
and Moraga and are critical
166h;i6 -
facilities (daisy chain for Orinda
Crossroads)
• Moraga and Orinda Crossroads
PS need the following upgrades-
• Electrical upgrades ,
• Instrumentations and controls
• Standby power
• Wet weather pumps:
• Pumping capacity
• Conversion to electric
driven pumps
10
May 17, 2018 Regular Board Meeting Agenda Packet- Page 476 of 534
Page 31 of 41
PHASING OF RECOMMENDATIONS
• Phase 2:
Martinez PS
CEQA on Fairview and Maltby PS
1
MARTINEZ AREA PUMP STATIONS
• Facilities deliver all
wastewater flow from
Martinez and are critical
facilities (daisy chain) -
Maltby and Fairview PS
need work:
O&M access .
Drywell show signs of +
corrosion
Potential wet weather Trean •
capacity issues
_1
Z1
May 17, 2018 Regular Board Meeting Agenda Packet- Page 477 of 534
Page 32 of 41
MARTINEZ PUMP STATION
ALTERNATIVE RECOMMENDATION
• Implementation of Alternative 2 — New Drywell
Submersible Wet Weather Pumps
• Include in Phase 2 to coincide with Fairview and Maltby
PS upgrades
1
FAIRVIEW AND MALTBY PUMP STATIONS
Hydraulic Analysis
• Corrosion Assessment
• Flood Risk Assessment
• Pump Station Alternatives
• Alt 1 - Rehabilitate Existing Pump Station
• Alt 2 - Construct New Drywell/Wetwell Pump Station
• Alt 3 - Construct New Submersible Pump Station
1
12
May 17, 2018 Regular Board Meeting Agenda Packet- Page 478 of 534
Page 33 of 41
FAIRVIEW PUMP STATION IMPROVEMENTS
• Major Improvements:
• Replace Pump Station
• Electrical, instrumentation
and controls improvements
and upgrades
• Redundancy: All three
pumps operating during
winter 2017 wet weather
Considered elimination but not
recommending that alternative .k
1
FAIRVIEW PUMP STATION
ALTERNATIVE RECOMMENDATION
Include in Phase 2 since existing pumps were rebuilt in
2016 and need to evaluate CEQA process
• Prior to the design phase of the project, a portion of the
parcel to the north of the existing site currently owned by
City of Martinez shall be evaluated and obtained by
Central San for the Fairview Pump Station
• Proceed with CEQA
1
13
May 17, 2018 Regular Board Meeting Agenda Packet- Page 479 of 534
Page 34 of 41
MALTBY PUMP STATION
• Largest of the three Martinez stations
• Major concerns:
• Very tight site
• Electrical, instrumentation and
controls improvements and
upgrades 10 6,
• Replace pumping station
• Outdated electrical systems ar
• Corrosion issues of metal cans
• Difficult access
• Redundancy:All three pumps
operating during winter 2017 wet
weather
MALTBY PUMP STATION
ALTERNATIVE RECOMMENDATION
• Include in Phase 2 since existing pumps were rebuilt in
2016 and need to evaluate CEQA process
• Prior to the design phase of the project, a portion of the
parcel to the north of the existing site currently owned by
Rethink Green shall be evaluated for potential
contamination and obtained by Central San for the Maltby
Pump Station
• Proceed with CEQA
1
14
May 17, 2018 Regular Board Meeting Agenda Packet- Page 480 of 534
Page 35 of 41
CONCORD METERING VAULT
• This flow meter measures
80% of City of Concord
flows
Recent meter study
recommended replacement
to improve accuracy
® Corrosion _W
PUMP STATION UPGRADES PROJECT
PROJECT DESIGN, BID,AND CONSTRUCTION SCHEDULE
r..
p.o
o..mn..a..6waMaq
1
15
May 17, 2018 Regular Board Meeting Agenda Packet- Page 481 of 534
Page 36 of 41
5. PROJECT BUDGET
PUMP STATION UPGRADES PROJECT
PHASE 'I
PRELIMINARY CONSTRUCTION COST ESTIMATES
Pump Stations Upgrades Phase 1 ted W;7stimated Project Cost
=uction Cost 11111111
Flush Kleen Pump Station $11292,000 $1,816,000
Moraga Pump Station $9,023,000 $12,684,000
Orinda Cross Road Pump Station $7,997,000 $11,240,000
Concord Main Metering Vault(') $720,000 $950,000
Total Project Cost $19,032,000 $26,690,000
Security Improvements $150,000 $210,000
PS SCADA Architecture Improvements $200,000 $280,000
Total Project Cost $19,382,000 $27,180,000
(')50 percent cost share with City of Concord per Agreement In progress
1
in 2018 Dollars
16
May 17, 2018 Regular Board Meeting Agenda Packet- Page 482 of 534
Page 37 of 41
DESIGN BUDGET FOR PHASE 1
DISTRICT PROJECT 8436
Consultant (VWHA and Others)
• Preliminary Design Services: $780,000
• Final Design Phase 1: $2,200,000
Staff and Operations (Planning and Design)
• Coordination, Project Management, Bidding, etc.: $720,000
Construction
• Contractor, Construction Management,
Contingency: $23,480,000
1
6. RECOMMENDATIONS
17
May 17, 2018 Regular Board Meeting Agenda Packet- Page 483 of 534
Page 38 of 41
RECOMMENDED BOARD ACTIONS
Staff recommends that the Board authorize the General
Manager to include final design services with
V.W. Housen and Associates in an amount not to exceed
$2.2 million for the Pump Station Upgrades Project-
Phase 1, District Project 8436
QUESTIONS
18
May 17, 2018 Regular Board Meeting Agenda Packet- Page 484 of 534
Item Ae 39 of 41
(Handout
SOLIDS CONDITIONING BUILDING ROOF
REPLACEMENT, DISTRICT PROJECT 7359
Engineering & Operations Committee
April 25, 2018
Presented by
Edgar J. Lopez, PE
Capital Projects Division Manager
and
Nathan Hodges, PE
Associate Engineer
BACKGROUND
• Installed in mid 1970's
• Roof has exceeded its useful life and needs full
replacement
• Building contains critical equipment and electrical system
t
i.
May 17, 2018 Regular Board Meeting Agenda Packet- Page 485 of 534
Page 40 of 41
PROJECT SCOPE OF WORK
• Replace tar and gravel with conventional membrane
system
• New roof expected to last 30+ years, manufacturer to
provide a 30-year warranty
• Removal of decommissioned exhaust stacks and fan
shrouds - ---
• Replacement of sheet metal
covers
• Replacement of edge coping
caps
• Hazardous materials
abatement
PRECONSTRUCTION ACTIVITIES
• Proposals to be solicited from multiple existing District
Contractors and incorporated via change order
• Work includes:
• Coating of existing roof mounted controls conduits
• Relocating power and network conduits away from
roof edge
• Installing additional power and network conduits for
security and instrumentation
• Installing additional handrail and portable temporary
fall protection systems
• Steam system modifications
• Gas line demolition
New wind sock '
2
May 17, 2018 Regular Board Meeting Agenda Packet- Page 486 of 534
Page 41 of 41
STAFF RECOMMENDATION
• Staff recommends the following:
• Find that the Project is exempt from CEQA;
• Award a construction contract in the amount of$748,008
for the construction of the Project, to Platinum Roofing,
Inc. the lowest responsive and responsible bidder; and
• Authorize the General Manager to execute the Contract
Documents subject to submittal requirements and include
up to a 15-percent contingency.
CFNTRAISAN
.r
QUESTIONS?
1
3
May 17, 2018 Regular Board Meeting Agenda Packet- Page 487 of 534