HomeMy WebLinkAbout12. Updated presentation Attachment 4 (Updated)
FILTER PLANT AND CLEARWELL
IMPROVEMENTS, PHASE 1A
DISTRICT PROJECT 7361
Board Meeting
May 2, 2019
Jean-Marc Petit
Director of Engineering and Technical Services
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1 . PROJECT OBJECTIVES AND
BACKGROUND
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SIAL PROJECT OBJECTIVES
Improve performance and reliability of the Recycled Water Plant (RWP)
Filtration
Disinfection
Recycled Water (RW) storage and distribution (UW and Zone 1 )
Electrical Systems
Modernize Automation and Control of RWP
Migrate from batch operation to continuous operation
Facilitate unattended operation
Position RWP to meet future RW Title 22 demands
Maximize asset value of existing facilitiesDoNo
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Rehabilitate drink "war� Central CvnSru Cuslu Wndory[HsfNl1
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Minimize investment in infrastructure for future RWP expansion
Evaluate Impact and possible integration of Concord Redevelopment and
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Water Exchange Projects
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EXISTING RECYCLED WATER PLANT FACILITIES
Clearwell Pumping Station (PS `
Backwash (BW) Pumps
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RW Pumps (Zone 1)
UW Pumps }
Clearwell:
East '
West
a IWest East
Substation 40CW CW
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Filters (4) ,,, At
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Chemical Conditioning
Filter Effluent Pipelines -
Filter BW Basinamw
Filter Diversion Structure - - - -- -- - _
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Forebays -- - -
Applied Water PS
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2 . PROJECT FINDINGS AND RECOMMENDED
IMPROVEMENTS
SUMMARY OF KEY FINDINGS AND
RECOMMENDED IMPROVEMENTS
Electrical Power Distribution & 1-t-
Motor Control Centers (MCC) v
Structure 9000 and Forebays
Filters -i
Clearwell
Disinfection
Filter Building
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Clearwell:
r h' Mechanical,
r. tructural and Failing
Electrical Equipment;and -..#y,4•�a �' East Cell Clearwell
Pb Pump Condition and - + Cover and Liners
Sizing ;�. � '{ .
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and CIz Contact _� �;
Filter Capacity and Basins Efficacy
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�- Pipeline and Pipe
.R Electrical Power Supports Condition
f Distribution Voltage
and Reliability
. Water Quality and
Hydraulic Bottleneck
Filter Building into Forebays
Condition and Code
Upgrades
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` Electrical Equipment;and
- ' AWPS Pump Condition and
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3. PROJECT PRIORITIZATION AND PHASING
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RECOMMENDED IMPLEMENTATION
Split Phase 1 recommendations:
Phase 1A: Proceed with 30% Design on elements of the
project that would not be impacted by a future Water
Exchange project
Phase 1 B: Postpone improvement or rehabilitation of other
elements that could be impacted if a Water Exchange project
was to proceed
Plan for, but not include, elements of Phase 2 into
design which would be triggered and coordinated with
CCRP
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PROPOSED PHASE 1A SCOPE FOR RECYCLED WATER
PLANT FACILITIES IMPROVEMENTS
• Add UW Pump
• Replace BW Motors (480V)
• New 1 MG Storage Tank
• Clearwell:
• Rehab East Clearwell
Seismic Pining of
divider wall °�' '
• New Isolation Gates + x. ..". . .
• Chlorine Contact asins
• Rehab 1 Filter+ mech. .:m:m
• Upgrade Chemical Feed }
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Forebays) -
�;, Upgrade/Replace Electrical Gear
New CW Electrical Facility
Replace Substation 40 - 2400V
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TOTAL PROJECT COST - ( PHASE 1A)
Attachment 1
Filter Plant and Clearwell Improvements — Phase 1A
District Project 7361
Estimated Capital Costs of Recommended Items
Design, Staff, Total Total Project
Project Component and Other Costs' Construction Cost
Cost
Filter Improvements $930,000 $3,100,000 $4,030,000
Chemical Conditioning System Rehabilitation $270,000 $900,000 $1,170,000
Clearwell Improvements $3,430,000 $11 ,100,00 $14,530,000
Clearwell Pump Station Upgrades $910,000 $2,700,000 $3,610,000
Electrical Distribution System Upgrades $2,460,000 $7,200,000 $9,660,000
Total Ca itaI Costs $8,000,000 $26,000,00 $337040,000
1 Includes $2.5 million for Stantec Consulting Services, Inc. professional engineering services agreement.
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4. PROJECT SCHEDULE
PHASE 1A
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ID ask Name Duration Start FinishHalf 1,2Q19 Half Z 2019 HaIF 1,2024
J F M A M 1 J A 5 O N D J F M A M
1 Project Management 17.5 mens
2 Conceptual Engineering 2.45 mons
3 Final Design NTP 0 days ♦411
4 Preliminary Design(30%Design 2 mons
Submittal)
5 Design Development(60%Design 4 mons
Submittal)
6 Final Design{95%Design Submittal} 4 mons
7 Bid Documents(100%Design 3 mons
Submittal)
S Bid Period 2mons
9 ward,Contractors NTP 0 mons M 5/22
Bring 30%
back to E&O
Bring 90%
back to E&O
Submit Application for SRF
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Task Pmjart S—muy W—I Task Stmt.a* [ Deadline
Project CCCSD Design Schedul SPlit Iracty Task D—fi—only Fi ah—ly 7 Pr�g—
Date'Fri 1/25/19 Milestone ♦ Tractive Milesmne Ma-A Rdlur, Frlemal Tasks M—al Progress
Summary SJmmaiy D I Mawal SJmmaiy Milesmra A
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5. RECOMMENDATIONS
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RECOMMENDED BOARD ACTIONS
Staff recommends the following :
Authorize the General Manager to amend an existing
professional services agreement with Stantec
Consulting Services, Inc. to increase the contract ceiling
from $990,000 to $ 1 .54 million for design of the Filter
Plant and Clearwell Improvements, Phase 1A, District
Project 7361
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QUESTIONS
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