HomeMy WebLinkAbout03.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 Cros Page 1 of 25
Item 3.b.
CENTRAL SAN BOARD OF DIRECTORS
' POSITION PAPER
DRAFT
MEETING DATE: APRIL 25, 2018
SUBJECT: REVIEW DRAFT POSITION PAPER TO AUTHORIZE THE GENERAL
MANAGER TO AMEND THE 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, ORI NDA CROSSROADS, AND FLUSH KLEEN PUMP
STATIONS ATA COST NOT TO EXCEED $2.2 MILLION.
SUBMITTED BY: INITIATING DEPARTMENT:
AMANDA SCHMIDT, ASSOCIATE ENGINEER ENGINEERING AND TECHNICAL SERVICES-
CAPITAL PROJECTS
REVIEWED BY: SASHA MESTETSKY, SENIOR ENGINEER
EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER
JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL
SERVICES
ISSUE
Board of Directors' (Board) authorization is required for the General Manager to execute an amendment to
a professional engineering services agreement for amounts greater than 15-percent of the original
agreement amount.
BACKGROUND
In 2015, Capital Projects initiated an evaluation of the Moraga and Orinda Crossroads Pump Stations at
the request of Operations due to several deficiencies with the standby power engine driven systems,
electrical and instrumentation concerns, and other equipment identified for near term replacement. The
most impactful item identified was replacement of the 1,000-horsepower Waukesha diesel engines (circa
1959) at both stations. The Comprehensive Wastewater Master Plan (CWMP) identified several structural,
mechanical, electrical, and instrumentation improvements needed at the Martinez, Fairview, Maltby, and
Flush Kleen Pump Stations. These stations have multiple concerns, including reliability of existing
equipment and infrastructure, corrosion, are prone to flooding, and have some pumping capacity
limitations. Central San staff decided to package these stations with Moraga and Orinda Crossroads to
form one all-encompassing pumping station project, which has been included in the current Capital
Improvement Budget (CI B)titled Pump Station Upgrades, District Project 8436 (Project).
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 19 of 72
Page 2 of 25
On July 20, 2017, the Board authorized the General Manager to execute an agreement with V.W. Housen
and Associates (VW HA)for the predesign of the Project at a cost not to exceed $780,000.
The predesign work consisted of numerous field investigations, workshops, meetings (with Operations,
Maintenance, and Capital Projects staff), facility tours, and other important efforts to comprehensively
evaluate and recommend solutions. The preliminary design included seven elements: Moraga and Orinda
Crossroads "All Electric" Option Evaluation; Hydraulic Analysis; Electrical, Instrumentation & Controls
(I&C)Assessment; Evaluation to Eliminate Fairview Pump Station; Corrosion Assessment; Heating,
Ventilation and Air Conditioning (HVAC)Assessment; and Flood Risk Assessment. Project delivery
options and construction sequencing were also included in the preliminary design. These elements form
the basis of design for the Project.
The following is a summary of the predesign work and the recommendations for final design.
Moraga and Orinda Crossroads Pump Stations
Moraga Pump Station, originally installed in 1959, is located in a residential area of Moraga. Orinda
Crossroads Pump Station is located in downtown Orinda next to Theater Square. These stations were
installed at the same time and are nearly identical in design and features. They have gone through several
upgrades, with the most recent renovation in 2000. The stations consist of three dry weather electric
pumps and two wet weather diesel engine driven pumps. Central San staff identified the need to replace
the Waukesha diesel engine (circa 1959) and hired VW HA to assist in the project and prepare a basis of
design report with options to replace the engine and other station improvements. During the Basis of
Design phase, it was determined that an "all-electric" option warranted consideration prior to committing to
replacement of the Waukesha engine and engine controls, generator installation, and other capital
improvements.
The Preliminary Design Report (PDR), completed in February 2018, includes an "all-electric" evaluation
that includes the following alternatives at both stations: Option 1: Keep Engines; Option 2:All-Electric; and
Option 3:All-Electric Hybrid. The All-Electric Hybrid Option implements the "all-electric" option by installing
one electric wet weather pump under the initial project but defers the replacement of the 20-year old
Caterpillar diesel engine/pump with the second electric wet weather pump to a future project.
Option 2 (All-Electric) is the preferred option at both stations for multiple reasons: it minimizes future
requirements associated with escalating Bay Area Quality Management District (BAAQMD) regulations for
diesel engines, it eliminates additional foreseeable wet weather pumping future upgrades and improves
pumping transitions and low flow operations. The conversion to all electric pumping was implemented
successfully at Lower Orinda Pump Station in 2003. To increase resiliency, the dry weather pumps will be
replaced with drypit submersible pumps.
Electrical improvements include a new generator sized to pump buildout peak wet weather flows (PW W F),
new PG&E service, motor control center, configuration of breakers to allow for operator servicing, and
implementing ArcFlash safety requirements.Additional surge protection is necessary and requires larger
surge tanks and associated piping. HVAC needs will be addressed; there have been instances where
electrical equipment has overheated.
The corrosion assessment identified particular piping that needs to be rehabilitated or replaced within the
station. In January 2018 at Moraga Pump Station, a leak was detected in a spool pipe between the wetwell
and Caterpillar diesel wet weather pump.An immediate repair was completed as a change order on a
capital project.
At Moraga Pump Station, grinders will be installed to address the ongoing maintenance caused by rags.
Flush Kleen Pump Station
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 20 of 72
Page 3 of 25
Flush Kleen Pump Station is one of Central San's oldest pump stations, originally built in 1950. Certain
electrical, instrumentation and controls equipment are obsolete and replacement parts cannot be obtained
from manufacturers. The Electrical, I&C assessment recommended replacing the standby power
generator, automatic transfer switch, electrical service, and power distribution.
It is recommended to install two new drypit submersible constant speed pumps. The new pumps will allow
buildout PW W F to be pumped through a single forcemain and will allow for larger solids to be passed at
low flows. Drypit submersible pumps will provide increased resiliency at the station. It is recommended to
replace piping and valves located in the drywell. The corrosion assessment recommended replacing 6-
inch discharge piping exiting the valve vault wall and investigating the extent of lead paint found on the wall
of the drywell and within the station.
Supervisory Control and Data Acquisition (SCADA)Architecture Assessment and Security
Improvements
A SCADA architecture assessment was a recommendation from the Preliminary Design Report and will
be completed in the final design scope of work. The SCADA assessment includes an evaluation of the
existing overall architecture including the pump station programmable logic controllers and their integration
with the SCADA control system at the wastewater treatment plant. This assessment will be completed for
all stations and recommendations will be implemented in the final design of Moraga, Orinda Crossroads,
and Flush Kleen Pump Stations.
Central San recently completed a security assessment of all facilities. Recommendations such as access
control, intrusion detection, and surveillance will be included in the final design of Moraga, Orinda
Crossroads, and Flush Kleen Pump Stations.
Flood Protection Evaluation: Orinda Cross Road Pumping Station
During the preliminary design phase of the Pump Station Upgrades Project, a flood risk assessment was
performed for the six pump station sites included in the Project. The flood risk assessment includes
information on the purpose and scope of the assessment, regulatory requirements, sea level rise
estimates, findings, and flood protection and sea level rise protection recommendations for each station,
where applicable. The assessment concluded that the Orinda Crossroads Pump Station is located within a
100-year flood area but is not tidally influenced or susceptible to sea level rise. The assessment indicates
that the Orinda Crossroads Pump Station could experience flooding from San Pablo Creek. Just
southeast of the pump station, the San Pablo Creek has been encroached by a concrete box culvert with
inadequate capacity to convey the entire one-percent annual chance of flood.As a result, flood waters
back up and begin to pond in the lowest area under the California State Route 24 overcrossing resulting in
ponding at the pump station.
A key subconsultant to VW HA, HDR, I nc. will be tasked to verify that the effective Federal Emergency
Management Agency(FEMA) Flood Insurance Rate Map along San Pablo Creek in the vicinity of the
Orinda Crossroads Pump Station is modeled appropriately and mapped accurately based upon the
modeling results. The work performed will include data collection and hydraulic model/mapping review.
The findings and recommended next steps will be presented and discussed at a future meeting.
Recommended next steps may include guidance to proceed forward with flood protection; or
recommended model revisions necessary to update the hydraulic model to revise mapping; or guidance to
submit a Letter of Map Revision (LOMR)to FEMA for a proposed change.
The predesign also evaluated the three pumps stations located in Martinez: Martinez, Fairview, and
Maltby Pump Stations.
Final design for these three pump stations will be started in two years. Martinez Pump Station is at the site
of the former City of Martinez wastewater treatment plant. It is the first station that pumps in a chain (to
Fairview and then to Maltby)to the Central San wastewater treatment plant.
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 21 of 72
Page 4 of 25
Some mechanical and electrical improvements are recommended at the Martinez Pump Station. However,
the predesign recommends the construction of new pump stations for Fairview and Maltby. For the
Fairview site, the new station would require the acquisition of a portion of a parcel owned by the City of
Martinez (former right-of-way). These alternatives would increase reliability and improve resiliency and are
more favorable for construction. Central San staff feels that land acquisition is critical to moving forward
with an alternative and design work.
For the Maltby site, the construction of a new pump station would require the acquisition of a portion of a
parcel to the north, currently owned and occupied by Rethink Green. Central San believes the site may be
contaminated since it was used in the past for storage of wood products. Properties on other sides of the
station are less desirable due to previous use or topography. Central San staff feel that additional
information about the availability and suitability of the Rethink Green property is needed before moving
forward with design.
The land acquisition presentation and discussion will be taken to the Real Estate, Environmental and
Planning Committee.
Concord Main Metering Station
The existing venturi meter was installed in 2010 and measures 80-percent of the flow from the City of
Concord (City). The City has at times expressed concerns about the accuracy of the meter. Staff initiated
a study on the existing metering system and the analysis indicates that a new magnetic flowmeter would be
more accurate and require less maintenance than the existing flowmeter. The sump pump discharge piping
will also be relocated to a new tap location for better operations access. I ntrusion monitoring at the facility
and a SCADA alarm will be updated to allow better communication with Central San operations staff. The
City has agreed to reimburse half of the design costs and staff will be seeking a cost sharing agreement
with the City for construction.
Schedule
Central San staff is recommending phasing the design and construction into two phases under two
separate projects to accommodate Central San operations staffing, as well as much of the critical work at
the station impacting operations will occur in the dry weather season.
Moraga and Orinda Crossroads Pump Stations are in the greatest need of upgrade, are top priority, and
will be done under Phase 1. Design for Moraga, Orinda Crossroads, and Flush Kleen Pump Stations is
scheduled to be 12 months in duration, starting in July 2018. Also based on the similarities between the
Moraga and Orinda Crossroads Pump Stations and locations of those stations, staff plan to construct the
Moraga, Orinda Crossroads, and Flush Kleen Pump Stations under one project.
Central San staff feels more information is needed to move forward with the final design at the Martinez,
Fairview, and Maltby Pump Stations. Because the operation of Martinez Pump Station is so integral to
those stations, staff plans to construct these pump stations together under Phase 2. This will allow time for
land acquisition to determine the California Environmental Quality Act (CEQA) needs prior to the start of
design. Staff plans to come back to the Board with a contract amendment with VW HA to design the
Martinez, Fairview, and Maltby Pump Stations in 2019.
CEQA:
At its July 20, 2017 meeting, the Board independently found that the agreement with this vendor was
exempt from CEQA under Central San's CEQA Guidelines Section 15262, since it allowed for further
planning and feasibility studies for possible future actions which Central San has not approved, adopted, or
funded, and the outcome of these tasks will not have a legally binding effect on later activities. Central San
will conduct an environmental evaluation of any capital project that is proposed in the future as a result of
the tasks authorized herein to determine the need for any additional CEQA documentation.
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 22 of 72
Page 5 of 25
ALTERNATIVES/CONSIDERATIONS
An alternative would be to postpone the design or design each station improvement as separate projects,
which is not recommended due to the project drivers and design complications previously noted above,
and the associated increase in overall project costs in implementing multiple projects over a long period of
time.
Although the proposed CI B and current budget have adequate cash funding for the final design, it is
anticipated that Central San will most likely request bond financing to construct these improvements. This
decision will be presented at a future Board Meeting and no action is required at this time.
FINANCIAL IMPACTS
The VW HA final design services for the Project Phase 1 is estimated at$2.2 million. The total VW HA
agreement cost ceiling is estimated at$2.98 million ($780,000 for pre-design, and $2.2 million for final
design), which is approximately 11-percent of the $27.2 million total estimated project cost for Project
Phase 1 and the Concord Metering, as detailed in Attachment 1.
The Project is listed in the Fiscal Year(FY) 2017-18 CI B on page 131 with an estimated budget of
$450,000 for planning, $2,596,000 for design, and $30,389,000 in construction. The final design will span
this fiscal year and next fiscal year. The Project Phase 1 and Phase 2 will be detailed, updated, and
included in the FY 2018-19 Cl B.
The Financial I mpact Table was not included since no budget transfer is required to fund this Project.
There are adequate funds within the current and following year Cl B for the design of the Phase 1 Project.
COMMITTEE RECOMMENDATION
The Engineering and Operations Committee reviewed this agreement amendment at the April 25, 2018
meeting and recommended approval to include final design services for the Pump Station Upgrades
Project.
RECOMMENDED BOARD ACTION
Authorize the General Manager to amend the existing V.W. Housen and Associates Agreement,
Agreement 045460, in an amount not to exceed $2.2 million for the Pump Stations Upgrades Project,
District Project 8436, Phase 1 Scope of Work.
GOAL TWO: Strive to Meet Regulatory Requirements
Strategy 1 - Strive to Achieve 100% Permit Compliance in Air, Water, Land and Other Regulations, Strategy 2- Strive
to Minimize the Number of Sanitary Sewer Overflows
GOAL FIVE: Maintain a Reliable Infrastructure
Strategy 2- Facilitate Long-term Capital Renewal and Replacement, Strategy 3- Protect District Personnel and
Assets from Threats and Emergencies
ATTACHMENTS:
1. Estimated Capital Costs
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 23 of 72
Page 6 of 25
2. Presentation (replaced with revised version)
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 24 of 72
Page 7 of 25
Attachment 1
Pump Stations Upgrades Project - Phase 1
District Project 8436
Estimated Capital Costs of Recommended Improvements
Estimated Estimated Total
Pump Stations Construction Cost Project Cost
Flush Kleen Pump Station $1,292,000 $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 Improvements (*) $720,000 $950,000
Total Project Cost $19,032,000 $26,690,000
Security Improvements $150,000 $210,000
Pump Stations SCADA Architecture Improvements $200,000 $280,000
Total Project Cost $19,382,000 $27,180,000
(*) Cost to be shared 50-percent with City Concord per Agreement
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 25 of 72
Page 8 of 25
Item 3.b.
(Handout)
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
n�
Drivers
rymPSHWn \
„ Preliminary Design Fi�
Project Scope and Approach
J
Project Phasing and
Schedule
Project Budget
j Recommendations
1
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 26 of 72
Page 9 of 25
1 . PROJECT BACKGROUND AND DRIVERS
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April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 27 of 72
Page 10 of 25
PROJECT BACKGROUND
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ORINDA CROSSROADS PUMP STATION
• Largest Pump Station for Central San I r
• Major Concerns:
• Very tight site
• Located in very busy downtown
commercial area in Orinda
• Diesel Engines on wet weather pumps �,►
• Consider wet weather pump r-
replacement? _.
Electrical, instrumentation and controls
improvements and upgrades
• Existing electrical equipment issues
(overheating)
• Evaluate back-up power
I �
• Evaluate adequacy of surge protection ;
kA .�
3
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 28 of 72
Page 11 of 25
MORAGA PUMP STATION
• Major Pump Station: Second largest PS
for Central San
• Major Concerns:
• Located in residential neighborhood t:r -
near a school and creek
• Diesel engines on wet weather - -
pumps
• Consider wet weather pump 1 �'
replacement? ' '
• Electrical, instrumentation and r
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
Martinez PS Fairview PS Maltby PS
• Master Plan reduced buildout PWWF by 17%
• 2016/2017 worst case storm
< 10-year, 24-hour storm 201601
7 Worst Case 24
• Hydraulic analysis will determine == 'A"M1=3.06 inches {�
required upgrades to meet reliable
firm capacity for buildout PWWFs -
Mote:14year,24-hour storm=3.51 inches at Martinez VWVM
I
4
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 29 of 72
Page 12 of 25
2. PRELIMINARY DESIGN FINDINGS
T
� DESIGN SERVICES
ox� FOR PUMP
STATION
District Project 8436
.:P• n UPGRADES
unp wem r
3� Draft Preliminary Design Report
Review Meeting
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V.W.HOVSEN L 1rCSi ne engi veering
January 24,2018 �jC •^�Imo'
I
5
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 30 of 72
Page 13 of 25
PUMP STATION UPGRADES PROJECT
PDR OVERVIEW—TABLE OF CONTENTS
Draft Preliminary Design Report
Executive Summary
Introduction .�
aDESIGN SERVICES
Reliability and Redundancy Critena -- "+ °
.—.,-
46
Facilities -" FOR PUMP
Martinez Pump Station .µ STATION
D,-ict P+oj,CI 5d 35
Fairview Pump Station UPGRADES
Maltby Pump Station o�� araR Preliminary Design Report
Reriew Meelirtg
Flush-Kleen Pump Station
Concord Main(South)Metering Stationnuary 2e,201E .x- �-- r
Momga Pump Station
Dnnda Crossmads Pump Station
Pmject Implementation Strategy
Pmject Design and Construction Schedule _
'I
FLOOD PROTECTION/
SEA LEVEL RISE V- _m
__
Pump Flooding Potential at Site Sea Level Rise
Station (Proleded Water
Surraoe Elevation NAVD ,
FEMA FEMA Notes +30 +50 +100
Flood years years years
Hazard
Zone
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6
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 31 of 72
Page 14 of 25
3. PROJECT SCOPE AND APPROACH
w
3. Project Scope and Recommendations
A. MORAGA AND ORINDA PUMP STATIONS
7
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 32 of 72
Page 15 of 25
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 oil
• Reliability „
• Redundancy
• ResiliencyI
� 1
"ALL ELECTRIC" WET WEATHER PUMP
ALTERNATIVES AT ORINDA CROSSROADS AND
MORAGA PS INCLUDE:
Reuse of Existing Morris IIS fl► 1k AA Am-do
Pump Casings with Smaller
Impellers and New 700 HP '
Horizontal Electric Motors
Least Cost Alternative •�f'�
1 f �
Y
® 16
Install New Dry Pit } �
Submersible Electric Pumps
Provides Increased Resiliency
Moraga Pump Station 3D Visualization
8
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 33 of 72
Page 16 of 25
4. PROJECT PHASING AND SCHEDULE
PHASING OF RECOMMENDATIONS
• Phase 1:
• Orinda Crossroads PS
• Moraga PS
• Flush Kleen PS
• Concord Metering Vault Improvements
• Phase 2:
• Martinez PS
• CEQA on Fairview and Maltby PS
9
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 34 of 72
Page 17 of 25
PHASING OF RECOMMENDATIONS
• Phase 1:
• Orinda Crossroads PS
• Moraga PS
• Flush Kleen PS
• Concord Metering Vault Improvements
• Phase 2:
• Martinez PS
• CEQA on Fairview and Maltby PS
- -0,
MORAGA-ORINDA PUMP STATIONS
• Facilities deliver majority of
wastewater flows from Orinda
and Moraga and are critical
facilities (daisy chain for Orinda Flush
Kleen
Crossroads) `
• Moraga and Orinda Crossroads �rinda ,
PS need the following upgrades: crossroads
• Electrical upgrades Moraga
• Instrumentations and controls
• Standby power
• Wet weather pumps:
• Pumping capacity
• Conversion to electric
driven pumps -
10
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 35 of 72
Page 18 of 25
PHASING OF RECOMMENDATIONS
• Phase 1:
• Orinda Crossroads PS
• Moraga PS
• Flush Kleen PS
• Concord Metering Vault Improvements
Phase 2:
• Martinez PS
• CEQA on Fairview and Maltby PS
MARTINEZ AREA PUMP STATIONS
• Facilities deliver all
wastewater flow from
Martinez and are critical ,�y
facilities (daisy chain)
• Maltby and Fairview PS
need work:
• O&M access 'Martinez
• Drywell show signs of F•[Mew
corrosion
• Potential wet weather Treatment Plant
capacity issues
11
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 36 of 72
Page 19 of 25
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
0010L
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
12
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 37 of 72
Page 20 of 25
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 F
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
I.
13
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 38 of 72
Page 21 of 25
MALTBY PUMP STATION
I
• Largest of the three Martinez stations
• Major concerns:
• Very tight site
• Electrical, instrumentation and -
controls improvements and
upgrades
• Replace pumping station
• Outdated electrical systems
• Corrosion issues of metal cans
• Difficult access
i
• Redundancy:All three pumps :Ir
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
14
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 39 of 72
Page 22 of 25
CONCORD METERING VAULT
• This flow meter measures '
80% of City of Concord
flows
• Recent meter study
recommended replacement
to improve accuracy
�v
• Corrosion 1
pw
PUMP STATION UPGRADES PROJECT
PROJECT DESIGN, BID,AND CONSTRUCTION SCHEDULE
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April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 40 of 72
Page 23 of 25
5. PROJECT BUDGET
PUMP STATION UPGRADES PROJECT
PHASE 1
PRELIMINARY CONSTRUCTION COST ESTIMATES
Pump Stations Upgrades Phase 1 Estimated �Estimated Project Cost
Construction Cost
Flush Kleen Pump Station $1,292,000 $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
In 2018 Dollars
16
April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 41 of 72
Page 24 of 25
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
6. RECOMMENDATIONS
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April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 42 of 72
Page 25 of 25
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
00elo I�11*1114 '
QUESTIONS
-1:
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April 25, 2018 EOPS Regular Committee Meeting Agenda Packet- Page 43 of 72