ITEM 4.9
CITY MANAGER' S REPORT
JULY 13, 2026 CITY COUNCIL REGULAR MEETING
ITEM: APPROVE PURCHASE OF TURBIDITY METER
EQUIPMENT FROM UGSI CHEMICAL FEED, INC. FOR
THE LOUISE AVENUE WATER TREATMENT FACILITY
RECOMMENDATION: Adopt a Resolution to Approve the Purchase of Turbidity Meter Equipment from UGSI Chemical
Feed, Inc., for the Louise Avenue Water Treatment
Facility
SUMMARY:
Staff requests authorization to Purchase turbidity meter equipment from UGSI Chemical Feed, Inc., for the Louise Avenue Water Treatment Facility ( LAWTF). The new equipment will replace existing meters that have reached the end of their useful life and are no longer functioning reliably. The total cost of the purchase is $ 82, 052 and will be funded through the Water Operations Fund 5620.
BACKGROUND:
The Louise Avenue Water Treatment Facility ( LAWTF), located at the municipal corporation yard at 2112 Louise Avenue, was constructed in 2012 to provide arsenic treatment for the City' s groundwater supply.
Turbidity meters are critical components used to monitor water quality and maintain compliance with state drinking water regulations. These instruments provide realtime data on water clarity, allowing operators to verify treatment performance and ensure the delivery of safe drinking water.
The existing turbidity meters are no longer functioning reliably and require replacement to maintain regulatory compliance and operational continuity.
TriOS- brand turbidity meters have been selected due to their accuracy, reliability, and compatibility with the facility' sexisting instrumentation and control systems. Use of this equipment will ensure consistent performance, minimize maintenance requirements, and support uninterrupted operation of the treatment facility.
In accordance with Lathrop Municipal Code ( LMC) Section 2. 36. 110( A), this purchase qualifies as a sole source procurement. UGSI Chemical Feed, Inc. is the exclusive authorized distributor for TriOS equipment within the United States and is therefore the only vendor capable of supplying this equipment. Documentation supporting this sole source determination is included in the attachments.
CITY MANAGER' S REPORT
JULY 13, 2026 CITY COUNCIL REGULAR MEETING
APPROVE PURCHASE OF TURBIDITY METER EQUIPMENT FROM UGSI CHEMICAL FEED, INC. FOR THE LOUISE AVENUE WATER TREATMENT
FACILITY
RECOMMENDATION:
PAGE 2
Staff recommends approval of the purchase of turbidity meter equipment from UGSI Chemical Feed, Inc., to replace the non- functioning equipment at the Louise Avenue Water Treatment Facility ( LAWTF) and maintain reliable water quality monitoring operations. UGSI is the sole source distributer of the turbidity meter equipment as documented in the attached authorization certificate and sole source justification letter.
FISCAL IMPACT:
The total cost for the purchase of the turbidity equipment is $ 82, 052. Adequate funds have been allocated in the adopted FY 2026-027 Water Operations Fund 5620 biennial budget.
ATTACHMENTS:
A. Resolution Approving the Purchase of Turbidity Meter Equipment from UGSI Chemical Feed, Inc., for the Louise Avenue Water Treatment Facility B. Proposal from UGSI Chemical Feed, Inc.
C. Exclusive Distributor Authorization Letter ( UGSI Chemical Feed, Inc.) D. Sole Source Justification Memorandum
CITY MANAGER' S REPORT
JULY 13, 2026 CITY COUNCIL REGULAR MEETING
APPROVE PURCHASE OF TURBIDITY METER EQUIPMENT FROM UGSI CHEMICAL FEED, INC. FOR THE LOUISE AVENUE WATER TREATMENT
FACILITY
APPROVALS:
06AS 2o26
Greg bson Date
Senior Civil Engineer
Bra Taylor Date
6**,
Public Works Director/ City Engineer
Cari Jame
Finance Di " tor
Date
714° 02( e
WI/ 2or( P
Thomas Hedegard Date
Deputy City Manager
1. 2oZG
Michael King Date
Assistant City Manager
7.' ZOZ6
Salvador Navarrete Date
City Attorney
7.8-2(o
Step en J. Salvatore Date
City Manager
PAGE 3
RESOLUTION NO. 26 -
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LATHROP TO
APPROVE THE PURCHASE OF TURBIDITY METER EQUIPMENT FROM UGSI CHEMICAL FEED, INC., FOR THE LOUISE AVENUE WATER TREATMENT
FACILITY
WHEREAS, the Louise Avenue Water Treatment Facility (" LAWTF") provides arsenic treatment for the City' s groundwater supply and requires reliable turbidity monitoring equipment to maintain water quality and regulatory compliance; and WHEREAS, the existing turbidity meter equipment at the LAWTF is no longer functioning properly and must be replaced to ensure continued operation and compliance with applicable drinking water requirements; and WHEREAS, staff has determined that TriOS- brand turbidity meter equipment is compatible with the City' sexisting facility systems and is necessary for operational reliability; and
WHEREAS, UGSI Chemical Feed, Inc. is the exclusive authorized distributor for TriOS equipment within the United States and is therefore the only vendor able to provide the required equipment; and
WHEREAS, pursuant to Lathrop Municipal Code Section 2. 36. 110( A), sole source purchases are exempt from bidding procedures; and WHEREAS, staff has prepared a sole source justification and obtained documentation supporting UGSI Chemical Feed, Inc.' s authorization status; and WHEREAS, the total cost of the turbidity meter equipment is $ 82, 052, and sufficient funds are available in Water Operations Fund 5620, as adopted in the Fiscal Year 2026-027 budget.
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Lathrop hereby approves the purchase of turbidity meter equipment from UGSI Chemical Feed, Inc. for the Louise Avenue Water Treatment Facility for an amount not to exceed $ 82, 052 to be funded from the Water Operations Fund 5620.
The foregoing resolution was passed and adopted this 13th day of July, 2026, by the following vote of the City Council, to wit:
AYES:
NOES:
ABSENT:
ABSTAIN:
Paul Akinjo, Mayor
ATTEST: APPROVED AS TO FORM:
Teresa Vargas, City Clerk Salvador Navarrete, City Attorney
UGSI CHEMICAL FEED
A cleanwaterl Company
IA
4 TriOS Optical Sensors
For: Lathrop, CA
UGSI Chemical Feed, Inc.
File No.: 202501- 41147
Prepared On: May 7th, 2026
FIRM PROPOSAL
SALES REPRESENTATIVE
Ethan Brooke
Email:
Phone:
EBrooke@Cleanwater1. com
408- 370- 6540
ATTA AENT
T: (855) 669- 3845 M: info@cleanwaterl. com W: cleanwaterl. com
UGSI CHEMICAL FEED
A cleanwaterl Company
TABLE OF CONTENTS
Cover Letter
Section 1
Section 2
Commercial Proposal
Technical Literature
r
IMPORTANT NOTICE: All the information in this Proposal is confidential and has been prepared for Buyer' s use solely in considering the purchase of the Equipment described. Transmission of all or any part of this Proposal to others or use by Buyer for other purposes is unauthorized without Seller' sadvance written consent.
UGSI Chemical Feed, Inc. is part of the Cleanwater1 family of companies, which includes PSI, PAX and VeloDyne.
1901 West Garden Rd
Vineland, New Jersey 08360
www. cleanwaterl . com
FIRM PROPOSAL
TRIOS SYSTEM
Project Name:
Project Location:
Proposal No.:
Proposal Date:
City of Lathrop WTP
Lathrop, CA
202501- 41147
May 7, 2026
Applications Engineer: Jessica Mannhardt
Regional Manager: Ethan Brooke
SCOPE OF SUPPLY
UGSI CHEMICAL FEED
A cleanwaterl Company
Qty Description Price
TW Turb- W40 Kit
6 TW Master Turb- W40 - Includes TW Turb end plates & connection kit 66, 210
6 TW PS300, US Version - Power supply unit for connecting sensors of the TW Master Series
12 Panel for TW Master Series, direct to wall mounting
6 Spare O- ring kit
24 SCREW M4X16MM SHCS FLAT HEAD 316 -SS
12 SOCKET HEAD SCREW, M4 X 0. 7mm, 20mm LONG
12 10mm push connect to 1/ 4" NPT adapter
Stainless Steel Enclosure
6 Stainless Steel Enclosure, 20 x 20 x 10, window cut 15, 842
SCOPE OF ENGINEERING
The following documentation shall be provided by Seller:
Shop Drawing Submittal
Detailed Scope of Supply
Comments & Clarifications
Project Schedule
Technical Information / Equipment / Drawings
Catalog Cut sheets
Dimensional Drawings / General Assembly Drawings
Functional Schematics / Piping and Instrumentation Diagrams ( when applicable) Electrical Schematics (when applicable)
Control Panel Layouts, Ladder Logic Diagrams ( when applicable) Receiving, Handling and Storage
Warranty Statement
Operation and Maintenance Manuals
Ordering Information
Warranty Statement
Introduction
Safety Precautions
Preventive Maintenance General Information
Maintenance Record Card
Regional Offices
Technical Data
Installation
Operation
Service
Illustrations
Preventive Maintenance Kits and Spare Parts List
Additional Literature
NOTE - In an effort to be environmentally responsible, one ( 1) hard copy of the submittal and O+Mwill be supplied and up to eight ( 8) copies will be supplied on CD- ROM. Additional hardcopies of the submittal and O+M can be supplied at a cost of $50. 00 each.
CLARIFICATIONS & EXCEPTIONS
UGSI Chemical Feed, Inc.
1901 W Garden Rd Tel: +1. 856.96. 2160
Vineland, NJ 08360 Fax. +1. 856. 457. 5920
1901 West Garden Rd
Vineland, New Jersey 08360
www. cleanwaterl. com
Section Part Description
UGSI CHEMICAL FEED
A cleanwaterl Company
ITEMS NOT INCLUDED IN SCOPE
Mechanical and electrical installation Tabor
Civil work including supply of anchor bolts
Interconnecting piping
Interconnecting wiring ( unless detailed above)
Valves, fittings, appurtenances not specifically listed above Decks, stairs and mezzanines not specifically listed above Installation supervision
All taxes, fees, duties, tariffs, and other customs clearance costs, lien waivers, bonds and licenses.
Room ventilation, air conditioning, or lighting
Videotaping ( unless a videotape agreement is signed)
UGSI Chemical Feed, Inc.
1901 W Garden Rd Tel: +1. 856.96. 2160
Vineland, NJ 08360 Fax: +1. 856. 457. 5920
1901 West Garden Rd
Vineland, New Jersey 08360
www. cleanwater1. com
COMMERCIAL OFFERING
UGSI CHEMICAL FEED
A cleanwaterl Company
Payment Terms: 20% Due on PO Submittal
20% Due on Release to Manufacturing
60% Due on Shipment of Equipment
All payments are due 30 days from date of invoice and are not subject to retention.
FOB: Factory
Freight to Job Site: Included
Shipment: 8- 10 weeks after receipt of full information and approved drawings ( when required) Startup: 0 days included
Training: 0 day included
Extended Warranty: Not Included
Price (Base): $ 82, 052
Other Conditions:
1) UGSI Chemical Feed, Inc. (Seller) proposes to furnish materials, and/ or equipment for the product identified at the beginning of this proposal. Any items not shown above as detailed under ( i) 'SCOPE OF SUPPLY', ii) 'SCOPE OF ENGINEERING', or ( iii) other attachments to this proposal, are EXCLUDED. In addition:
a. Seller' sprice will be held valid for a period of 90 days from the date of this proposal. Seller shall have the right to reprice this proposal if the parties do not agree to a mutually acceptable purchase order within 90 days after the Proposal Date or if delivery occurs more than 365 days after commercial agreement. b. Prices are in US Dollars.
c. Local or state taxes are not included in this proposal. d. The price is based on tariff rates in effect on the date of this Proposal. If any applicable tariff rate increases prior to the parties' execution of a mutually agreed order, the price will be increased correspondingly. 2) This proposal by Seller is contingent upon: (i) Seller' swritten acceptance of the signed proposal, a purchase order, or other document issued by the Buyer in response to this proposal; and ( ii) Buyer' s assent to the terms and conditions contained in this proposal, such terms to take precedence in the event of conflict with any other terms or documents incorporated into the contract arising out of this proposal unless otherwise agreed in a writing, signed by " Seller" (iii) satisfactory completion of an anti -corruption due diligence review, if applicable. 3) All of the information supplied by Seller in connection with this proposal ( including drawings, designs and specifications) ( the " Information") is confidential and/ or proprietary and has been prepared for Buyer' s use solely in evaluating the purchase of the equipment and/ or services described herein. Transmission of all or any part of the Information to others, or use by Buyer for any purpose other than such evaluation, is expressly prohibited without Seller' s prior written consent.
4) Please return a signed copy of this proposal or address and send your purchase order to:
UGSI Chemical Feed, Inc.
1901 W Garden Rd
Vineland, NJ 08360
Attn: Debra Petsch
Phone: 856.96. 2160
Fax: 856. 457. 5920
E- mail: dpetsch( acleanwater1. com
Thank you for your interest in UGSI Chemical Feed, Inc.. We are committed to meeting your expectations.
PROPOSAL ACCEPTANCE
An authorized signature indicates Buyer' s acceptance of this proposal, including without limitation Seller' sStandard Terms and Conditions of Sale accessible at:
https:// cleanwaterl . com/ hubfs/ UGSIChemFeedTandCsRev. 19.01.0 pdf Company Name
Buyer' s
Name ( printed)
Buyer' s
Authorized Signature
Date
UGSI Chemical Feed, Inc.
1901 W Garden Rd Tel: + 1. 856.96. 2160
Vineland, NJ 08360 Fax + 1. 856. 457. 5920
TW Turb- 40 / TW Turb- W40
TW Turb is a sensor from the modular TW Master series from TriOS, one of the world' s leading manufacturers of optical measurement technology. It has been developed for the precise analysis of turbidity
in drinking water and fullfils the highest standards of accuracy and reliability. The measuring range is tailored to the requirements of drinking water monitoring.
Seamless integration with the TW PS300 supply and
communication module means that the measurement
data can be easily transferred to existing systems.
The flexibility of the TW Master series makes it possible Precise analysis of turbidity
Customised, modular composition
Simple assembly and configuration
Fast cleaning
Turbidity
C in FNU
to create customised combinations and record additional parameters according to the requirements of the respective application.
With dimensions of just 160 mm x 280 mm x 108 mm,
the modules are extremely compact and can be easily
integrated into almost any installation. The simple installation and the possibility of customisation to individual application requirements make the TW Master series the
ideal choice for achieving the highest standards in water analysis.
Drinking water monitoring in water supply
systems
Quality control in wastewater treatment plants
Research projects on water quality
Turbidity
in NTU
1 TW Turb- 40 / TW Turb- W40
Application
Measurement
technology
Applied standard
Measurement principle
Parameter
Measuring Range
Measuring accuracy
Resolution
Sensitivity
Repeat accuracy
Detection limit
Light source
Detector
Linearity/ Variation coefficient
Measurement deviation
Reproducibility
Response time (T90)
Warm- up time
Data logger
Response time
Smallest measuring interval
Cross sensitivities
Display
Interface
Power Supply
Power consumption
Connection
digital:
analog:
Drinking, ground and surface
Turb- 40
LED 860 nm, FWHM* 30 nm
IR photodiode with a spectral
peak response at 860 nm
DIN EN ISO 7027- 1: 2016- 1
Nephelometry
Turbidity in FNU or NTU
TW Turb- 40
0- 40 FNU
5 %+ 0. 01) FNU
0.02 FNU
0.05 FNU
0. 5 % + Detection limit)
0.1 FNU
water
0. 53 %
2 % of the measured value
detection limit)
1 % of the measured value
detection limit)
20 s ( sensor only)
90 s at a flow rate of 10 Uh (total system)
TW Turb- W40
LED white light ( colour temperature between 2200- 300° K) Photodiode with a spectral
peak response in the range
between 400 and 600 nm
EPA Method 180. (August
1993)
Turbidity in NTU
TW Turb- W40
0- 40 NTU
5 % + 0. 01) NTU
0.02 NTU
0.05 NTU
tbd
0.1 NTU
60 s
tbd
tbd
tbd
Internal 8 GB memory, smallest storage interval 5 s
20 s
3. 1 s
Finely distributed air bubbles
Colored solutions, finely distributed air bubbles
3. 5 inch capacitive color touch display, 320x480 pixels RS -485 ( Modbus RTU), Ethernet ( Modbus TCP)
12- 24 VDC (± 10 %)
2W
M12 hybrid industrial connector, 8 -pin.
Full Width at Half Maximum
2 TW Turb- 40 / TW Turb- W40
Flowcell
Housing Material
Sensor
Dimensions ( W/ H/ D)
Weight
Operating conditions
Inner volume
Transport conditions
Storage conditions
Degree of protection
Support effort
Calibration/ maintenance interval
System compatibility
Warranty
POM / NBR
Aluminium / POM / PET / quartz glass
160 / 280 / 108 mm
approx. 3. 8 kg
Temperature: Sample ( insitu) 0- 30 C°
Ambient temperature: 0- 40 C°
min. Internal pressure: 0. 2 bar
max. internal pressure: 1 bar
Flow rate: min. 6 Uh ( 0. 1 Umin)
recommended 30 Uh ( 0. 5 L/ min)
max. 1200 Uh ( 20 Umin)
approx. 150 ml
0- 80° C
0- 80° C
IP30
Depending on the water quality, typically every < 0. 5h/ month Depending on the water quality, typically every 12 months only with TW PS300 and max. 2 additional modules
1 year ( EU & US: 2 years)
3 ATTACHMENT
G
To whom it may concern!
TriOS Mess- und Datentechnik GmbH
Burgermeister- Brotje- Stralle 25
D- 26180 Rastede, Germany
phone: + 49 ( 0) 4402 69670- 0 buero@trios. de
fax: + 49 (0) 4402 69670- 20 www. trios. de
Frank Meinhardt 01$' of January 2025
meinhardtetrios. de
Subject: Agency / Distributor Authorisation letter
AUTHORIZATION CERTIFICATE
We, TriOS Mess- und Datentechnik GmbH. hereby appoint and present this authorization certificate to
UGSI CHEMICAL FEED
A cleonwaterl Company
UGSI Chemical Feed, Inc.
1901 W Garden Road
Vineland, NJ 08360
and its official branches to act as our authorized exclusive TriOS Distributor ( for sales and after sales) for the United States of America.
This Authorization Certificate applies for Drinking- and Waste - Water applications.
The permit is valid from 01/ 2025 to 31/ 12/ 2026, till further notice and is extended by one year at a time unless terminated in writing.
Yours Sincerely.
THOS Mess- und Datentechnik GmbH
master - ie- Str. 25
180 Ra
04402/ :'• 70- 0Fax- 20
www. trios. de
Frank Meinhardt I
ny
TnOS GmbH • GeschaftsfUhrer: Rudiger Heuermann Registergericht Amtsgericht Oldenburg HRB 3992 USt -( dent- Nr.. DE 191484472 Commerzbank Oldenburg. IBAN DE19 2804 0046 0550 5359 DO BIC COBADEFF286 Steuer- Nr 6920539008 Oldenburgische Landesbank. IBAN DE64 2802 D050 1300 3256 00 BIC OLBODEH2
ATTACHMENT
lM
Memo
City of Lathrop
Department of Public Works
390 Towne Centre Drive Lathrop, CA 95330
Phone ( 209) 941- 7430
www. ci. lathrop. ca. us
To: Stephen J. Salvatore, City Manager
From: Brad Taylor, Public Works Director/ City Engineer Date: June 23, 2026
Re: Sole Source Justification for the Purchase of Turbidity Meter Equipment from UGSI Chemical Feed, Inc. for the Louise Avenue Water Treatment Facility Pursuant to Lathrop Municipal Code ( LMC) 2. 36. 110( C) this memo provides written certification to the City of Lathrop purchasing officer ( City Manager) by a department head explaining the justification for exempting the purchase of turbidity meter equipment from standard competitive bidding procedures with UGSI Chemical Feed, Inc. in the amount of $82, 052.
The Water Treatment Plant requires replacement turbidity meters to maintain compliance with state and federal drinking water regulations, as these meters measure the cloudiness of water and provide essential real- time data for monitoring filtration effectiveness, detecting process issues, and ensuring treated water remains safe for consumption. TriOS- brand turbidity meters are selected due to their high accuracy, reliability, advanced optical technology, and seamless integration with existing plant systems, which together support consistent performance with minimal maintenance. TriOS also offers superior product availability and responsive customer support compared to other manufacturers, both of which are critical for maintaining uninterrupted operations in a 24/ 7 water treatment environment.
In accordance with Lathrop Municipal Code ( LMC) Section 2. 36. 110( A), this purchase qualifies as a sole source procurement. UGSI Chemical Feed, Inc. is the exclusive authorized distributor for TriOS equipment within the United States, and therefore the only vendor from whom the City may legally and reliably obtain this equipment. A letter confirming UGSI Chemical Feed, Inc.' s exclusive distributor status, is attached to this justification.
For these reasons, the department requests approval to proceed with the sole source purchase from UGSI Chemical Feed, Inc. in the amount of $82, 052.
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