Event_4314_-_Specification.pdf

SPECIFICATIONS FOR EVENT 4314

LIQUID SODIUM HYDROXIDE

(CAUSTIC SODA)

DIVISION OF WATER TREATMENT & DISTRIBUTION SERVICES

DEPARTMENT OF PUBLIC WORKS

CITY OF MINNEAPOLIS

(612) 661-4906

I HEREBY CERTIFY THAT THIS SPECIFICATION WAS PREPARED BY ME OR UNDER MY DIRECT

SUPERVISION AND THAT I AM A DULY REGISTERED PROFESSIONAL ENGINEER UNDER THE LAWS

OF THE STATE OF MINNESOTA.

Peter J. Pfister, Superintendent, Water Plant Operations

DATE September 11, 2026 REG. NO. 42709

SPECIFICATIONS FOR LIQUID SODIUM HYDROXIDE

Minneapolis Division of Water Treatment & Distribution Services Minneapolis, Minnesota

1. GENERAL

Bids are asked for the provision of liquid SODIUM HYDROXIDE for use in water treatment for the City of Minneapolis over a 12 (twelve) month period beginning approximately November 1, 2026 with the option to extend two (2) additional 12(twelve) month periods if agreeable to both parties. The material to be supplied, the handling, packing, shipping and testing thereof, except where otherwise herein specified, shall all conform to AWWA Standard B501 (latest revision).

The material shall also possess certification by an accredited certification organization in accordance with ANSI/National Sanitation Foundation (NSF) Standard 60.

The City requires the option to purchase the product at two weight percentages, either 30% or 50%, to be indicated at the time of order placement. Bidders may submit bids for either or both concentrations.

The product shall be used for both pH adjustment of finished drinking water and as a neutralization agent for membrane treatment chemical cleaning residuals. The total estimated requirement is 1,200,000 dry pounds NaOH (600 tons), approximately split as follows.

Product Dry pounds NaOH Delivered pounds of product 30%W NaOH (Columbia Heights Membrane Plant)

Approx. 300,000 pounds 1,000,000 pounds

50%W NaOH (Fridley Filtration Plant)

Approx. 900,000 pounds 1,800,000 pounds

The estimated amount required is given for information purposes only and shall not be deemed to guarantee either a minimum or restrict the maximum amount to be furnished.

2. SECURITY PROVISIONS

The Minneapolis Water treatment complexes are secure facilities with controlled access. The following delivery practices are required for security reasons. Failure to follow these practices could result in police being summoned to City facilities or forfeiture of supplier’s contract to supply the City with chemicals.

All chemical shipments will leave the chemical supplier’s facility with security seals on the valves and openings into the product storage vessel. The seals will only be broken or removed in the presence of City staff at City facilities before unloading. If seals are broken or tampered with before delivery, or without City staff present, the chemical shipment will be refused. A signed weight certificate must be furnished on delivery.

Before each delivery to City facilities is accepted, City Supervisor must be in receipt of an email from the supplier containing the following information. If an email has not been received, or the delivery driver is different from the information, the shipment will not be received until

Verification or authenticity can be established by City staff.

Suppliers will email the following information before truck arrives on site:

• Bill of lading

• Certificate of Analysis

• Driver name and CDL number and license photo

• Passenger(s) name, if any

• Seal numbers

• Tractor #

• Trailer #

All drivers and passengers must stop at the City-designated staging area for pre-screening. No access is allowed until pre-screening process is complete.

• The pre-screening process requires all drivers and passengers to submit government issued photo identification.

• No weapons allowed on site unless they are secured (locked up) in the vehicle.

• Pets must remain in the vehicle or be on a leash at all times.

• Delivery vehicles are subject to search by City staff or City’s security personnel

• Visitor badges will be issued to drivers delivering to the Fridley Filtration Plant.

3. DELIVERY

Supplier will provide a telephone number for order placement.

Shipments shall be on order of the Water Treatment Plant Supervisor for the City. The City Supervisor shall provide the Supplier with a City of Minneapolis Purchase Order (PO) number.

This PO number must be on each invoice subsequently submitted.

Shipments shall be on order of the Water Treatment Plant Supervisor for the City. Deliveries will be accepted Monday through Friday after 7 a.m. and off-loading must be completed by 2:30 p.m. Material shall be delivered F.O.B. by tank truck of approximately four thousand (4,000) gallon capacity to the following locations:

a. Fridley Filtration Plant 4500 Marshall Street NE Minneapolis, MN 55421 anthony.thompson@minneapolismn.gov (Note that the campus entrance street address is 4100 E. River Road)

b. Columbia Heights Membrane Plant 4500 Reservoir Boulevard NE Minneapolis, MN 55421 Eric.pederson@minneapolismn.gov

Specifications for LIQUID SODIUM HYDROXIDE

Each full load and empty truck must be weighed on a certified truck scale by a licensed weigher.

A certified scale ticket shall accompany each load of product delivered.

• Driver shall remain at fill station throughout the unloading process and monitor the unloading process.

• Driver shall wear the appropriate protective face and body apparel, as required by the

Occupational Safety and Health Act, when unloading the product.

• Driver will ensure that the pipe and valve system at the plant used for off-loading is clear after delivery, albeit not blowing off the tanker truck into the storage tank(s).

• The supplier shall be responsible for cleanup of any spills resulting from the delivery or occurring during unloading of the product.

City reserves the right to weigh in and weigh out deliveries to the Fridley Filtration Plant on a State-certified scale located on the Fridley campus at the direction of the Plant Supervisor.

4. SAMPLING

Upon request of City personnel, the Supplier’s delivery driver shall take a sample of the liquid sodium hydroxide in the presence of City staff at the time of delivery. Testing of the sample will be performed by City staff to determine the specific gravity of the chemical and other parameters as needed. Driver will allow City personnel 15 minutes to examine sample and perform testing before unloading.

5. BIDS

A. All bids will be expressed in U.S. dollars per pound of SODIUM HYDROXIDE (dry basis) delivered. Bidders may submit separate bid prices for furnishing 30%W product and 50%W product.

B. Bidder shall state the manufacturer name and their location (City, State) of the product proposed to be furnished.

C. Bidder shall indicate their willingness to provide City the option to extend the contract at bid price(s) for one or two additional 12-month periods (through October 2028 or through October 2029).

6. SUBMITTALS

Prior to contract award, successful bidder shall submit the following documentation for the product(s) to be furnished:

A. Proof of ANSI/NSF Standard 60 certification.

B. Globally Harmonized System Safety Data.

C. A product data sheet or Certificate of Analysis representative of the product’s concentration weight percent as NaOH, specific gravity, and impurities.

D. Documentation of calculations for determining sodium hydroxide based on measured parameters for each lot and/or load of product delivered. Dry pounds NaOH in each load delivered shall then be documented by such calculations on each invoice and be the basis for payment (see Section 9).

E. Copy of current certification of scale(s) used to establish gross and tare weight on each bill of lading. Current scale certification shall be re-submitted throughout the duration of the contract.

7. PRODUCT QUALITY

The material supplied shall be certified for treatment of drinking water by an accredited certification organization in accordance with ANSI/NSF Standard 60, Drinking Water Treatment Chemicals – Health Effects. Evaluation shall be performed in accordance with requirements no less restrictive than those listed in ANSI/NSF Standard 60. Certification shall be performed by a certification organization accredited by the American National Standards Institute. The material will be used for pH adjustment and as a membrane-cleaning agent at a maximum use concentration of up to 5000 mg NaOH/L.

30%W assay product as delivered shall have actual sodium hydroxide content between 29.0 and 31.0%.

50%W assay product as delivered shall have actual sodium hydroxide content between 49.0 and 51.0%.

8. LABORATORY TESTING

The liquid SODIUM HYDROXIDE will be analyzed in accordance with the provisions of AWWA Standard B501, Section 5, Standard Methods for the Examination of Water and Wastewater or other U.S. E.P.A. approved methodologies.

The tests will be performed by the Minneapolis Water Laboratory or its appointed representative.

The tests will be performed on the material as delivered and not subject to any pretreatment that would precipitate or remove any delivered impurities.

If the delivered chemical fails to meet the test standards, then the City shall have the option of having the Supplier remove the inadequate chemical from the storage tank and replace with chemical that meets the specification.

9. INVOICE AND PAYMENT

All work requested under this Contract shall be placed on a City issued Purchase Order.

Contractor shall make all reasonable efforts to submit invoices and documentation in an electronic format, such as PDF or other format compatible with City software capabilities, in lieu of paper invoices and documentation, when so requested by City.

Upon delivery and acceptance of the service, the Contractor shall submit an invoice detailing the appropriate charges.

Invoices shall be submitted to:

City of Minneapolis 505 Fourth Ave S, Room 310 Minneapolis, MN 55415 Email: submitinvoices@minneapolismn.gov

Upon receipt of invoice and final inspection and acceptance of the service, the City will render payment within thirty (30) days unless any items thereon are questioned, in which event payment will be withheld pending verification of the amount claimed and the validity of the claim. The Contractor shall provide complete cooperation during any such investigation.

The City will not pre-pay for service. All bills shall state the location and dates of service being billed. All fees, taxes, charges, surcharges, and revenue payments are to be itemized.

No payment will be made for material stored off-site except in situations where payments may be considered by the City for materials which are stored in a secured area, to be verified by the City and where the Contractor maintains adequate insurance coverage protecting specific materials from loss.

Proof of insurance shall be supplied prior to payment for any materials stored off-site.

10. RIGHTS RESERVED

The City reserves the right to accept or reject a part or all of any or all bids as the interest of the City may require. The City further reserves the right to accept the bid of one bidder for delivery of 50%W NaOH and another bidder for delivery of 30%W NaOH.