HomeMy WebLinkAboutDocumentation_Regular_Tab 14_2/11/2021Agenda Item #14.
Regular Council
STAFF MEMO
Meeting: Regular Council -Feb 11 2021
Staff Contact: Matthew Hammond, Utilities Department: Utilities
Director
[EDIT 0
Approve Work Authorization CM U21.02 — WTP Process &Resource Improvements Evaluation —
Chen Moore &Associates
The Village owns and operates Public Water System (PWS) No. 4501438, which provides potable
water to over 5,000 connections within its utility service area. One water treatment plant (WTP)
serves the PWS which has a permitted maximum day operating capacity of 6.33 million gallon per
day (MGD). The WTP generally consists of a 2.7 MGD sand filter treatment process, a 3.6 MGD
reverse osmosis (RO) treatment process, 2.75 millions gallons of finished water storage and two high
service pump stations. The various WTP expansions have resulted in treatment components and
communications systems that are not working at their optimum reliability or efficiency. The control
systems hardware has been added on as each upgrade or expansion has occurred and do not
necessarily mesh well together. Additionally, there are process control systems that can be upgraded
providing an increase in automation and allow more control over the treatment processes. For these
reasons, a preliminary evaluation of the existing water treatment processes to identify potential
means to increase efficiency by lowering power and chemical use, evaluate the existing control
system hardware for a cohesive and planned upgrade, and recommend methods to further automate
the treatment processes is required.
Staff recommends the professional engineering services for this project be completed by Chen Moore
& Associates, in conjunction with Wright Pierce, one of the Village's on -board engineering
consultants. The proposed Work Authorization CM U21.02, in the amount of $124,400, includes WTP
process evaluation, control systems review and development of a final report. If approved, the project
is anticipated to be completed in the Summer of 2021.
BUDGETED AMOUNT: AVAILABLE AMOUNT: EXPENDITURE AMOUNT:
$2857510 $126)460 $124,400
Additional Budgetary Information: Funding Source(s):
401-411-531.302
Approve Work Authorization CM U21.02 with Chen Moore &Associates in the amount of $124,400.
Proposed Work Authorization CM U21.02 - Chen Moore & Associates.ada
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Agenda Item #14.
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Agenda Item #14.
�:
VILLAGE OF TEQUESTA
CONSULTING SERVICES WORK AUTHORIZATION
VILLAGE RFQ. NO.: UTIL 06-20
WORK AUTHORIZATION NO.CM-U21.02 FOR CONSULTING SERVICES
PROJECT No. G/L CODE: 401-411-531.302
CHEN-MOORE PROJECT NO.: 508.001
PROJECT TITLE: Water Treatment Plant Process & Resource Improvements Evaluation
This Work Authorization, when executed, shall be incorporated in and shall become an integral part of the
Agreement for Professional Services dated September 10, 2020 between the Village of Tequesta
("VILLAGE"), Chen -Moore & Associates ("CONSULTANT"), and Wright -Pierce, Inc.
(4 "SUB hereafter referred to as the Agreement.
I. PROJECT DESCRIPTION
VILLAGE owns and operates Public Water System (PWS) No. 4501438, which provides potable water
to the customers within VILLAGE's water service area through approximately 5,045 connections. The
PWS generally consists of fourteen groundwater wells, a water treatment plant (WTP) with two separate
treatment trains, and over seventy-two miles of water distribution mains ranging in size from 4-inch to
16-inch in diameter.
The PWS has a Florida Department of Environmental Protection (FDEP) permitted maximum day
operating capacity of 6.33 million gallon per day (MGD). VILLAGE's South Florida Water Management
(SFWMD) Water Use Permit (WUP No. 50-00046-W), which expires on October 31, 2031, allows the
VILLAGE to withdraw up to 1,594 million gallons (MG) annually with a maximum monthly withdraw
limit of 230.11 MG.
The WTP generally consists of a 2.7 MGD sand filter treatment process, a 3.6 MGD reverse osmosis (RO)
treatment process, one 0.75 MG water ground storage tank (GST) and one 2.0 MG GST for finished water
storage, and two high service pump stations (HSPS). The HSPS pumps finished water from the GSTs
into the water distribution system. There are two HSPS each related to one of the treatment trains. Pumps
1 through 4 are vertical turbine pumps located outside, near the 0.75 MG GST, and are each equipped
with 40 HP motors. Pump 4 has an adjustable speed drive. Pumps 5 through 7 are horizontal, split -case
pumps, located in a pump room next to the RO Process area. Pumps 5 and 6 are equipped with 125 HP
motors, and Pump 7 is equipped with a 75 HP motor. Pumps 5 and 7 have adjustable speed drives.
The Sand Filter treatment system was originally installed in 1977 as a GreensandTM filter for iron removal.
In 1982, the filter media was converted to sand/anthracite. In 2000, VILLAGE constructed the first phase
of the reverse osmosis (RO) treatment train. The treated water from both treatment trains is combined
in a clearwell, prior to being pumped into the GSTs before distribution.
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Agenda Item #14.
The various WTP expansions have resulted in treatment components and communications systems
that are not working at their optimum efficiency. The control systems hardware has been added on
as each upgrade or expansion has occurred and do not necessarily mesh well together. Additionally,
there are process control systems that can be upgraded providing an increase in automation and
allow more control over the treatment processes.
For these reasons, the VILLAGE has requested CONSULTANT evaluate the existing water
treatment processes to identify potential means to increase efficiency by lowering power and
chemical use, evaluate the existing control system hardware for a cohesive and planned upgrade,
and recommend methods to further automate the treatment processes. SUBCONSULTANT will
provide the below services to assist CONSULTANT with this project.
II. SCOPE OF SERVICES
The following is a description of the services to be provided under this Task Order.
TASK 1— Project Management and Meetings
A. Project Management
SUBCONSULTANT will perform project management activities for the project.
The activities include contract administration, budget management, invoicing,
monthly status reports, scheduling, and coordination with VILLAGE and
CONSULTANT.
B. Meetings
CONSULTANT and SUBCONSULTANT will attend the following Teams enabled
meetings with the VILLAGE. For each meeting, SUBCONSULTANT will prepare a
meeting agenda and meeting minutes.
• Kickoff Meeting
• Control Systems Review Meeting
• Process Efficiency Review Meeting
• Process Automation Review Meeting
• SCADA Planning Review Meeting
During the project kickoff meeting, the following will be discussed:
• Overall scope and schedule.
• Lines of communications.
• Critical success factors.
• Information needs.
• Log in instructions to the W-P SharePoint FTP site to be used for data transfer.
• Supervisory and control and data acquisition (SCADA) data availability.
• Details of the work to be complete before the next workshop.
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Agenda Item #14.
Task Assumption(s): The Scope of Services associated with this task assumes the
following:
• VILLAGE will upload the information requested to SUBCONSULTANT's
SharePoint FTP site by the proposed submission dates.
Tasks Deliverable(s): SUBCONSULTANT will submit the following to the VILLAGE and
CONSULTANT:
Agenda and minutes for each meeting in PDF format.
TASK 2 — Process Efficiency Evaluation
A. Process Data Collection
SUBCONSULTANT will develop a data request list of historic operating data from the
VILLAGE's SCADA System for each treatment train. Requested data will include:
• Daily raw water flow
• Daily finished water flow
• Daily chemical use
• Raw water quality data
• Finished water quality data
• Operating pressures at multiple process locations
The VILLAGE will provide unit costs for each chemical and power to be used in the
evaluation.
B. Process System Evaluation
SUBCONSULTANT will evaluate the existing water treatment unit process listed below
for potential methods to reduce power and/or chemical use. The evaluation will include a
review of the existing power and chemical used by each process (as listed below) and
provide any recommended improvements.
Each improvement will include a planning -level cost estimate to construct the improvement
along with an estimated operating cost savings.
Specific processes that will be evaluated are:
Reverse Osmosis Treatment System
• RO Feed Pumps
• RO membranes
• Chemical Doses for acid, sodium hypochlorite, and caustic
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Agenda Item #14.
Sand Filter Treatment System
• Sand Filters
• Surge Tank and Transfer Pumps
o SUBCONSULTANT will perform a hydraulic analysis of the well
pumps and filter systems to determine if the existing wells can pump
directly to the clearwell without the use of the transfer pumps.
• Chemical dose for ammonia
C. Process Efficiency Technical Memorandum
SUBCONSULTANT will summarize the efforts completed under this task in a technical
memorandum (TM). SUBCONSULTANT will provide a draft TM to the VILLAGE and
CONSULTANT for review and comment. SUBCONSULTANT will participate in a virtual
meeting (Process Efficiency Review Meeting) to discuss any comments. Following the
review meeting, SUBCONSULTANT will provide a final version of the TM.
Task Assumption(s): The Scope of Services associated with this task assumes the following:
• VILLAGE will upload the information requested to SUBCONSULTANT's SharePoint
FTP site by the proposed submission dates.
• The task does not include efficiencies related to lighting, HVAC, labor, or other
elements of the utility.
Tasks Deliverable(s): SUBCONSULTANT will submit the following to the VILLAGE and
CONSULTANT:
• Draft and final electronic copies of the technical memorandum in PDF format.
TASK 3 — Process Automation Review
A. Process Flow Diagram
Using existing as -built drawings of the whole WTP, SUBCONSULTANT will develop
three Process Flow Diagrams (PFDs). One PFD for the sand filter treatment train, one PFD
for the RO treatment train, and a combined PFD. The PFDs will be used to show the flow of
liquids and how processes interact with each other, facilitating the process review.
B. Process Automation Review
SUBCONSULTANT will identify areas of the process that could utilize additional
automation as a means of increasing operational process efficiency. The additional
automation will be to promote remote operational control or reduce the physical labor by
operations staff in collecting chemical dosing and residual data. The process automation
will evaluate the following processes:
A. Ammonia injection and residual analysis
B. Sodium hypochlorite injection and residual analysis
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Agenda Item #14.
C. Combined chlorine residual analysis
D. Odor Control System (Degasifiers and Chemical Scrubbers)
o Review design operating criteria
o Discuss with manufacturer recommended settings
o Identify improvements for automation and enhancing current
operations including cleaning of media.
E. Acid feed system
As a part of this task, VILLAGE has stated that they would like to document the potential
ability and operational changes required to operate each treatment train (RO vs. sand
filtration) independently. SUBCONSULTANT will review the water quality criteria of each
treatment train and identify methods to allow each treatment train to operate independently.
This does not include any chemical dosing experiments, only desktop analysis (such as
RTW Modeling).
As a part of the recommended automation, SUBCONSULTANT will provide connection
detail sketches for the automation equipment along with examples of recommended
analyzer equipment.
C. Process Automation Technical Memorandum
SUBCONSULTANT will summarize the efforts completed under this task in a technical
memorandum. SUBCONSULTANT will provide a draft TM to the VILLAGE and
CONSULTANT for review and comment. SUBCONSULTANT will participate in a
virtual meeting (Process Automation Review Meeting) to discuss any comments.
Following the review meeting, SUBCONSULTANT will provide a final version of the
TM.
Task Assumption(s): The Scope of Services associated with this task assumes the following:
• The existing as-builts provided by VILLAGE are generally correct and accurate and no field
verification is required.
• This does not include any chemical dosing experiments.
Tasks Deliverable(s): SUBCONSULTANT will submit the following to the VILLAGE and
CONSULTANT:
• Draft and final electronic copies of the Process Flow Diagrams and technical memorandum
in PDF format.
TASK 4 — SCADA SYSTEM REVIEW AND COMPONENT PLANNING
A. Field Investigations
SUBCONSULTANT will perform field investigations to gather existing information for
control panels and remote input/output (RIO) panels for the water treatment plant and
remote wells. During the review, the existing record drawings of the facilities will be
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Agenda Item #14.
reviewed to help identify features of the existing plant -wide communication network and
the telemetry communication to the remote sites. During the field investigations,
SUBCONSULTANT will meet with VILLAGE staff to get details on the existing
control hardware, software issues (such as the emergency generator delay), communication
issues, known system issues, and needs and/or preferences for future SCADA System
capabilities.
B. Network Architecture Diagram Development
Using the information collected in Task 4.A, SUBCONSULTANT will develop a network
architecture diagram of the existing water treatment plant communication network as well
as the remote telemetry network. It is intended that the network architecture diagram reflect
the existing configuration. After developing the existing Network Architecture Diagram,
SUBCONSULTANT will meet with the VILLAGE (Control Systems Review Meeting) to
discuss the existing plant -wide and telemetry communication system including proposed
future improvements. After discussions with the VILLAGE, a proposed Network
Architecture Diagram will be developed. The proposed Network Architecture Diagram will
be able to be used by the VILLAGE to guide for expansion and upgrade projects in the
future.
C. SCADA Hardware Component Plan
As the water treatment plant and remote sites have expanded over the years, both PLC and
communication equipment have both evolved and become obsolete. Over this time period,
multiple types and manufacturers of PLC and communication equipment have been
implemented in the control system thus creating compatibility issues. Old and obsolete
equipment have created a lack of technical support from the manufacturers and local
system integrators.
As such, SUBCONSULTANT will develop a control hardware planning document that
will guide the VILLAGE in replacing and upgrading their existing control system
hardware. The SCADA Hardware Component Plan will look at communication and PLC
compatibility, expansion capability, and account for planned obsolescence when
recommending specific hardware components. Specific hardware components include
items such as Programmable Logic Controllers (PLCs), network switches, network media,
communication protocols, and including remote telemetry components.
SUBCONSULTANT will provide a draft of the SCADA Hardware Component Plan to the
VILLAGE for review and comment. SUBCONSULTANT will participate in a virtual
meeting (SCADA Planning Review Meeting) to discuss any comments. Following the
review meeting, SUBCONSULTANT will provide a final version of the SCADA
Hardware Component Plan.
Task Assumption(s): The Scope of Services associated with this task assumes the following:
• VILLAGE provides existing record drawings of the facilities and any existing
control panel diagrams.
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Agenda Item #14.
Task Deliverable(s): SUBCONSULTANT will submit the following to VILLAGE and
CONSULTANT:
• Draft and final electronic copies of the SCADA Component Plan in PDF format.
III. DELIVERABLES
Task 1- Agenda and minutes for each meeting in PDF format.
Task 2- Draft and final electronic copies of the technical memorandum in PDF format.
Task 3- Draft and final electronic copies of the Process Flow Diagrams and technical
memorandum in PDF format.
Task 4- Draft and final electronic copies of the SCADA Component Plan in PDF format.
IV. SCHEDULE
The Project will begin immediately after SUBCONSULTANT receives a written Notice -to -
Proceed (NTP) and an executed AGREEMENT from CONSULTANT. SUBCONSULTANT will
coordinate the Project schedule with VILLAGE and CONSULTANT but assumes the overall
Project will be complete within 150 calendar days of receiving the written NTP. The schedule will
be adjusted based on discussion with VILLAGE and CONSULTANT.
V. COMPENSATION AND PAYMENT
SUBCONSULTANT proposes to complete the Scope of Service described herein on a lump -sum
basis for a not -to -exceed fee of $124,400. Table 1 summarizes SUBCONSULTANT's total not -to -
exceed fee and breakdown of fees by task.
TABLE 1
SUMMARY OF
ENGINEERING FEE
Task
Fee
Task 1 — Project Management and Meetings
$ 21,900
Task 2 — Process Efficiency Evaluation
$ 2300
Task 3 — Process Automation Review
$ 291900
Task 4 — SCADA System Review and Component Planning
$ 491000
Total Not -to -Exceed Fee
$ 124,400
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Agenda Item #14.
VI. AGREEMENT REFERENCE
The work authorized under this Work Authorization shall be performed under the terms
and conditions described within the Professional Services Agreement dated September 10,
20201 by and between the Village of Tequesta ("VILLAGE") and Chen -Moore &
Associates ("CONSULTANT"). Compensation shall not exceed the hourly rates currently
in effect under this Agreement.
CHEN-MOORE & ASSOCIATES
WE
Print Name:
Title:
VILLAGE OF TEQUESTA
WE
Date:
WORK AUTHORIZATION NO. CM-U21.02
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