SPECS_-_Water_Plant_Chem_2025-2026_FY.docx

GENERAL CONDITIONS FOR PLANT CHEMICALS

1. Quantities estimated are approximate, based on projected usage during a twelve (12) month period. However, the City may choose to order more or less of the product bid than the estimated amounts. The unit bid prices acquired for these contracts are to remain the same whether the City buys more or less than the estimated quantities of the product bid. The City however guarantees that the amount of the product will not be increased or decreased more than 25% without the consent of the vendor.

DATE: ______/______/______

AUTHORIZED SIGNATURE: _________________________________________________

TITLE: __________________________________________________________________

NSF CHLORINE – SPECIFICATIONS:

1. Estimated twelve (12) months requirement of NSF Chlorine for the Water Treatment Plants.

10/2025 – 9/2026 - 180 Tons – (360,000 lbs.) NSF Chlorine (8,000 lbs. Minimum Shipment) 10/2025 – 9/2026 - 35 Cylinders - (5,250 lbs.) of the 150 lbs. Cylinder NSF Chlorine (300 lb.

Minimum Shipment)

2. It should be understood that Quantities of chemical specified above are ONLY for bid purpose only. Actual amount of chemical purchase throughout the contract period can be of higher or lower quantities than advertised.

3. Product must be compressed liquid gas contained in approved one-ton or 150-pound containers.

4. Product must be approximately 100% chlorine strength.

5. Contractor agrees to allow the City of Edinburg Treatment Plants and its facilities an overall inventory of twenty-one (21) 1-Ton Containers and Eight (8) 150 lb. cylinder on site at all times. Breakdown: Twelve (12) 1-Ton at the West Edinburg Water Plant – 1752 South Mon Mack Road, Seven (7) 1-Ton Containers at the Downtown Water Plant – 500 East Mahl, Two (2) 1-Ton Containers at the Raw Water Pump Station #1 – 905 Pin Oak Road, and eight (8) 150 lb. cylinders at the Faysville Water Tower 12610 N. Highway 281, in Edinburg, Texas 78539.

6. Contractor agrees to deliver additional 1-ton containers and 150 lb. cylinders as needed within a period of three (3) calendar days after notification by telephone.

7. All 1-ton containers, 150 lb. cylinders and their contents delivered by Contractor shall meet all applicable Federal and/or State Laws and safety requirements.

8. Product must be acceptable to the Texas Commission on Environmental Quality (TCEQ) and must conform to American National Standards Institute/National Sanitation Foundation (ANSI/NSF) Standards 60 for potable water treatment. Certification for ANSI/NSF Standard 60 and Safety Data Sheet or equivalent must accompany bid quote.

9. Neither the Contractor nor his employees engaged in the delivery and off-loading of the containers/cylinders shall be considered employees of the City. The method and manner of performance of such undertakings shall be under the exclusive control of the contractor’s delivery personnel. The City shall have the right of inspection of said undertakings at any time.

10. Contractor agrees to carry adequate public liability insurance and further agrees to indemnify and hold the City harmless of any form and from any and all losses, damages or claims arising out of or in any way connected with any injury or injuries to any employee or employees of contractor and from any claims of any other persons for injuries, losses or damages sustained at, around, or in connection with the work which is attributable to the Contractor.

NSF ALUMINUM SULFATE/POLYMER/COPPER SULFATE BLEND – SPECIFICATIONS:

1. Estimated twelve (12) month requirement of NSF Liquid Aluminum Sulfate / Polymer / Copper Sulfate Blend for the Water Treatment Plant

10/2025 – 9/2026 - 4,100,000 lbs. (Estimated) NSF Liquid Aluminum Sulfate / Polymer / Copper Sulfate Blend (12 month supply)

(Estimated) NSF Liquid Aluminum Sulfate / Polymer / Copper Sulfate Blend (4,500 – 5,000 gallons minimum shipment)

2. It should be understood that Quantities of chemical specified above are ONLY for bid purpose only. Actual amount of chemical purchase throughout the contract period can be of higher or lower quantities than advertised.

3. Product must be a single product solution.

4. Product must have a specific gravity of between 1.20 - 1.62

5. Product must have a 1% polymer solution blend.

6. Product must have a 2% copper sulfate solution blend and shipment shall be accompanied by a Certificate of Analysis stating the exact pounds of copper sulfate content.

7. Product must prevent the excessive build-up of algae on clarifier walls, weirs, filters, and produce no more than a 0.5 mg/L copper residual in the finish water.

8. Product must be acceptable to the Texas Commission on Environmental Quality (TCEQ) and must conform to the American National Standards Institute / National Sanitation Foundation (ANSI/NSF) Standard 60 for potable water treatment.

9. ANSI / NSF Standard 60 Certification and Safety Data Sheet or its equivalent must accompany bid quote.

NSF LIQUID AMMONIUM SULFATE – SPECIFICATIONS

1. Estimated twelve (12) month requirement of NSF Liquid Ammonium Sulfate for the Water Treatment Plant.

10/2025 – 9/2026 - 750,000 lbs. (Estimated) NSF Liquid Ammonium Sulfate (45,900 lbs. Minimum Shipment) 12-month supply

(Estimated) NSF Liquid Ammonium Sulfate (4,500 gals. minimum Shipment) for the (12) month.

2. It should be understood that Quantities of chemical specified above are ONLY for bid purpose only. Actual amount of chemical purchase throughout the contract period can be of higher or lower quantities than advertised.

3. Must conform to American National Standards Institute/National Sanitation Foundation Institute Standard for Drinking Water Treatment Chemical – Health Effects, ANSI/NSF 60; shall be furnished with bid documents.

4. Must conform to American National Standards Institute/American Water Works Association Standards for Ammonium Sulfate ANSI/AWWA B302-95 or the most current standards.

5. Certification for ANSI/NSF Standard 60 and Safety Data Sheet or its equivalent must accompany bid quote.

6. The Liquid Ammonium Sulfate Solution shall be made at the manufacturer’s or supplier’s site such that a homogeneous, well-mixed product is received at the City’s location.

7. Will be used as a source of ammonia in the formation of chloramines to disinfect the treated water.

8. The physical and chemical properties of the Liquid Ammonium Sulfate shall be as follows:

· Colorless to slightly yellow liquid

· Slight ammonia odor

· Complete solubility in water

· Specific gravity of 1.2 – 1.23

· pH of 4.8 – 7.5

· Molecular Weight of 132.13

· Density of 10 – 10.25

· Ammonium Sulfate 30.0 – 40.0% WT

SERVICE TO PROVIDE CHLORINE DIOXIDE

Bids are being sought for a service contract to provide Chlorine Dioxide (CLO2), generated on-site, as a pre-oxidant disinfectant, taste and odor, chlorite, chlorate, and trihalomethane control measure. The application for drinking water from various surface supplies.

It shall be understood and agreed that the duration of this contract will be for twelve (12) months and that the price stated shall remain firm for the duration of the contract. The price quoted shall be for two (2) new chlorine dioxide generator units, each with an emergency backup unit, or by having spare parts easily available at each location within the City. The units shall be located at two (2) raw water intake sites (Pump Station #1 @ West Tower & at the West Treatment Plant) location.

(10/2025 – 9/2026) - 320,000 lbs. Estimated Sodium Chlorite (12 month supply)

– Sodium Chlorite for a 1 year supply (45,000 lbs. Minimum Shipment)

1. It should be understood that Quantities of chemical specified above are ONLY for bid purpose only. Actual amount of chemical purchase throughout the contract period can be of higher or lower quantities than advertised.

2. The successful bidder shall supply a system for generating CHLORINE DIOXIDE (CLO2) as an aqueous solution from the reaction of SODIUM CHLORITE and CHLORINE GAS. The unit shall be capable of delivering the required amount of CLO2 at each feed point on a continuous basis, 24 hours a day. No chlorine dioxide tanks and subsequent feed pumps shall be used.

3. The unit shall be properly sized and designed specifically for the intended application set forth in the general description above. The unit shall be equipped with a flow measuring device to assist in maintaining system efficiency and to prevent waste to plant water.

4. The reaction product purity shall not be less than 95% CLO2, in continuous on-line maximum rated flow production. The unit must NOT be pH dependent to operate.

5. Bidder shall supply all equipment and materials necessary to generate solution on-site except for electricity, plant water at system pressure, chlorine gas and pH adjustment material. All equipment and materials furnished shall be suitable for the application specified and shall comply with all Federal, State, and Local Codes, Laws, and Ordinances.

6. The bidder’s SODIUM CHLORITE solution must be approved and registered with the ENVIRONMENTAL PROTECTION AGENCY (EPA): be acceptable to the TEXAS COMMISSION ON ENVIRONMENTAL QUALITY (TCEQ) and conform to American National Standards Institute/National Sanitation Foundation (ANSI/NSF) Standard 60 for use in public potable water systems. Bidder’s equipment must meet (ANSI/NSF) Standard 61 for use in public potable water systems as well.

The solution shall conform to:

Appearance: Pale yellow slightly hazy liquid

Product Bulletins, Safety Data Sheets, and a certificate of analysis, including chlorite and chlorate concentration shall be provided for each truck load of sodium chlorite solution delivered.

7. Bidder shall include a calculation of the amount of sodium chlorite in gallons it takes to generate 100 pounds of chlorine dioxide, assuming 100% conversion.

8. Bidder shall supply, install, and maintain two (2) new heavy duty, double walled, sun resistant (black tanks) bulk chemical storage tank for receiving, storing, and dispensing sodium chlorite on site. Tank capacity shall be no less than five-thousand (5,000) gallon capacity. Bidder shall provide signage and warning of hazards in the storage and generation area. Bulk tank shall be equipment with an ultrasonic level monitoring indicator so as to monitor level inside tank at tank location. Bidder will be responsible for the proper operation and setup of said level indicator.

9. Bidder shall supply to the City, with an approved Test Kit for the purpose of measuring generator effluent efficiencies, Chlorine Dioxide residuals and Chlorite residual. The Test kit must be EPA Approved for test reporting. The bidder will be responsible for training plant personnel in the use of these units. In the event of a unit malfunction the contractor must supply a replacement unit within three days of notification. The City will be responsible for purchasing reagents and necessary equipment from competitive vendors in order to obtain the lowest price. The City is to retain the test kit upon the end of the contract period and will be considered City property.

10. Deliveries of sodium chlorite shall be by drivers thoroughly trained and familiar with the related hazards, safety measures, and spill clean-up procedures. ALL SPILLS AND LEAKAGE, REGARDLESS OF SIZE SHALL BE PROPERLY AND IMMEDIATELY CLEANED UP BY BIDDER’S PERSONNEL.

a. All drivers delivering sodium chlorite will have received certified training, including a Chlorine Dioxide Safety and Handling Video.

b. Proper labeling, including hazard warnings, will be required on all delivery trucks.

c. Safety loading and unloading checklist will be used and signed before any chemical is delivered.

11. Prior to installation of the system, bidder shall deliver a complete and detailed installation and operation manual, including illustrations and drawings, Material Data Sheets, and other hazardous warning information.

12. Bidder shall provide all necessary labor and materials for a complete installation. All work will be performed by workmen skilled and experience in the necessary crafts.

Bidder shall provide all necessary labor and materials to maintain the system at peak operating efficiency and safety and shall maintain a complete inventory of spare parts in local stock. All maintenance shall be performed by TRAINED TECHNICIANS familiar and experienced with the bidder’s equipment. SAID TECHNICIAN SHALL BE AVAILABLE 24 HOURS A DAY, 7 DAYS A WEEK, AND SHALL RESPOND WITHIN 2 HOURS, ONCE NOTIFIED OF ANY EMERGENCY. He shall bring any and all replacement parts and tools required with him on the first response. Bidder shall absorb all repair costs.

13. Bidder’s technician shall perform monthly routine generator efficiency reports, inspections, and preventive maintenance on the system as required, but not to exceed intervals of thirty (30) days. During each inspection, bidder’s technician shall:

a. Inspect the entire chlorine dioxide system for leaks and malfunctions.

b. Analyze influent and effluent treated water for chlorine dioxide

c. Analyze treated water for Total and Free Chlorine Residual, utilizing the DPD Method and Chlorine Dioxide Residuals at the application point, Plant influent, and the Point of Entry to the distribution system, utilizing the Amperometric Method II as outlined in the Standard Methods for the Examination of Water and Wastewater or approved equal.

d. Check and calculate overall CLO2 generator efficiency at various flow rates

e. Review Plant records and conduct required testing to insure maximum generator efficiency.

f. Provide initial or additional training to Plant Operator as required to maintain proficiency of all involved personnel, including the viewing of a Chlorine Dioxide Safety Video.

Bidder shall absorb all costs for the analytical, inspection, and preventive maintenance program set out above.

14. Startup and initial training shall be provided at no additional charge, and will include training operating PERSONNEL in the following areas:

a. Checking the equipment installation.

b. Physical properties of chlorine dioxide, chlorine gas, chlorite, chlorate, and/or any other chemicals used in the system.

c. Chemistry/Methods of chlorine dioxide generation.

d. How to optimize generator performance.

e. Maintenance and repair procedures.

f. Sampling and analytical procedures for chlorine dioxide, chlorine, and chlorite determinations, yields, and residuals.

g. Safety considerations in operations and chemical handling, including viewing of a comprehensive Chlorine Dioxide Safety Video.

15. Bidder shall provide the following tests every month during the life of the contract agreement; sampling consists of two(2) distribution three-sample sets, and two (2) Point of Entry samples, for a total of eight (8) sample analysis. Methods of analysis shall be as specified in 40 Code Federal Regulations or by any alternative analytical technique specified by the Executive Director and approved by the Administrator under 40 CFR ‘ 141.27. All samples to be analyzed by a laboratory certified by the Texas Department of Health Bureau of Laboratories. Bidder shall absorb all testing costs.

a. Chlorite Analysis (8)

b. Total Trihalomethane Analysis (6)

16. Bidder’s chlorine dioxide equipment shall be capable of functioning manually, automatically, and proportionally.

a. Manual ON-OFF operation shall occur by switch. During OFF cycle, generation equipment and effluent piping shall be automatically purged of chlorine dioxide solution.

b. Automatic operation shall occur by 24 hour a day, 7 day a week timer. A water purge shall occur automatically during OFF time to adequately evacuate generation equipment and effluent piping of chlorine dioxide solution.

c. Proportional control shall feed precursor chemical in direct proportion to a 4-20 mA signal. Plant to provide 4-20 mA signal used on Plant’s water production.

d. Bidder’s chlorine dioxide equipment will have an emergency shut-down device to stop the chlorine dioxide generation process as well as emergency purge cycle to evacuate all chlorine dioxide solution from generation equipment and associated piping.

e. Bidder’s chlorine dioxide equipment shall contain a switch device and means to alarm plant operations of a loss of chlorine. Said switch device will be interlocked to shut down precursor chemical system.

f. Bidder’s chlorine dioxide equipment shall contain a notification device and means of alarm to plant operations of a loss of motive water to unit. Said alarm switch to be interlocked to shut off chlorine gas and chemical injection system.

g. Bidder shall provide copy of valid and applicable commercial general liability policy with $1,000,000 per occurrence, $3-5 million dollar aggregate limits with additional insured endorsement and pollution coverage extension endorsement.

h. Bidder shall guarantee pricing for the duration of the contract.

i. Bidder’s current credit rating must be provided with bid.

j. Delivery product shall be no more than five (5) days after notification by authorized CITY PERSONNEL.

k. Bidder shall submit bid based on a price per pound of specified sodium chlorite solution, shall be F.O.B. City of Edinburg, and include deposit, rent, or demurrage charges if applicable. The City will not be responsible for any additional costs not included in the bid price.

l. In the event the chlorine dioxide equipment is no longer required, desired, or a different bidder is successful, bidder will be given thirty (30) day notice and shall remove equipment at bidder’s expense.

All bidders will be required to submit proof of qualifications, including references, all insurance coverage’s, names of current SERVICE PERSONNEL, EPA registration number for sodium chlorite, laboratory qualifications, ANSI/NSF Standard 60 & 61 Certification, Safety Data Sheets, written acceptance of State Regulatory Officials if account references (or no references are available) are outside of the State of Texas, and all other pertinent information related to this bid.

17. The undersigned hereby certifies that he/she understands all the above, has read them carefully, and shall deliver and furnish all articles or services specified in these specification.

DATE: ______/______/______

AUTHORIZED SIGNATURE: _____________________________________________________

TITLE: _____________________________________________

COPPER SULFATE (LARGE CRYSTAL) – SPECIFICATIONS

1. Estimated twelve (12) month requirement of Copper Sulfate (Large Crystal) for the Water Treatment Plant.

10,000 lbs. – Copper Sulfate (LARGE CRYSTAL SIZE) (BULK ORDER)

2. It should be understood that Quantities of chemical specified above are ONLY for bid purpose only. Actual amount of chemical purchase throughout the contract period can be of higher or lower quantities than advertised.

3. Product to be delivered to the West Water Treatment Plant located at 1752 South Mon Mack Road in Edinburg, Texas.

4. Product must be of a LARGE CRYSTAL SIZE and odorless.

5. Product must be able to control algae growth in the raw water reservoir with a minimum water temperature of 60 Fahrenheit. Product must have active ingredient of at least 99% copper sulfate.

6. Product must be acceptable to the Texas Commission on Environmental Quality (TCEQ) and must conform to American National Standards Institute/National Sanitation Foundation (ANSI/NSF) Standard 60 for potable water treatment.

7. Certification for ANSI/NSF Standard 60 and Safety Data Sheet or equivalent must accompany bid quote.

8. Product must be soluble in water and must be in sealed container/sacks equal to fifty (50) pounds.

City of Edinburg Wastewater Treatment Plant (1201 N. “M” Road) Specification – Belt Filter Press Polymer

**Actual quantities may vary significantly and are dependent on yearly service requests.

Estimated quantities based on projected usage during a twelve (12) month period. The City will be ordering approximately four (4) drums, as needed, per month. The City may increase or decrease the usage depending on availability of funds.

(10/2025 – 09/2026) – 200 drums Estimated – Belt Filter Press Polymer

**Actual quantities may vary significantly and are dependent on yearly service requests.

1. The unit prices for this contract shall remain the same, whether the City buys more or less than the amount of the product, and will not increase or decrease more than 25% without the consent of the vendor.

2. The price quoted shall prevail for a contract period of twelve (12) months, or as otherwise specified from the time or acceptance and issuance of the Purchase Order.

3. Bid price shall include any freight charges, deposits, rent, and demurrage charges for containers, if any. The City will not be responsible for any additional costs not included in the bid price.

4. The unit price per 55 gallon drums shall be specified by the bidder.

5. Superfund tax, hazardous handling charge, fuel surcharge, or other environmental charge shall be included in the bid price, or specified as an addendum. The City will not be responsible for any additional costs not included in the bid price.

6. The approved polymer will have the Clarifloc CE-1620 (Polydyne Inc.) FBS C1683 (Fort Bend Services) FB-2308 (Chemnation, Inc.) Polymer characteristics, or an approved equal. Any vendor proposing an approved equal must first perform an integrity evaluation analysis prior to submittal of Bid and be added to The City’s Approved list of Polymers (failing to submit analysis will deem bid non responsive):

a. Appearance – Opaque liquid

b. Ionic Character – Cationic

c. Charge Density – very high

d. Molecular Weight – high

e. Approximate Bulk Density – 8.66

f. Specific Gravity – 1.04

g. Active Content (%) – 43

h. Bulk Viscosity – (cps) – 1200

i. pH – 3-5

j. Maximum Concentration (gll) – 10

k. Stability of D.I. Solution (days) – 1

l. Dilution to Obtain 5 gll Active Content – 93

m. Approximate viscosity @ 5 gll Active Content (cps) – 800

n. Storage Temperature (Degree C) – 0-35

o. Shelf Life (months) – 6

City of Edinburg Water Treatment Plant (1752 S. Mon Mack Rd.)

Specification – Belt Filter Press Polymer

1. Estimated quantities based on projected usage during a twelve (12) month period. The City will be ordering approximately four (4) drums on an as needed basis. The City may increase or decrease the usage depending on availability of funds.

(10/2025 – 09/2026) – 25 Drums Estimated – Belt Filter Press Polymer

**Actual quantities may vary significantly and are dependent on yearly service requests

2. The unit prices for this contract shall remain the same, whether the City buys more or less than the amount of the product, and will not increase or decrease more than 25% without the consent of the vendor.

3. The price quoted shall prevail for a contract period of twelve (12) months, or as otherwise specified from the time or acceptance and issuance of the Purchase Order.

4. Bid price shall include any freight charges, deposits, rent, and demurrage charges for containers, if any. The City will not be responsible for any additional costs not included in the bid price.

5. The unit price per 55 gallon drums shall be specified by the bidder.

6. Superfund tax, hazardous handling charge, fuel surcharge, or other environmental charge shall be included in the bid price, or specified as an addendum. The City will not be responsible for any additional costs not included in the bid price.

7. Vendor must conduct three (3) polymer integrity evaluation analyses during the fiscal year.

8. Product supplied MUST be approved and registered with the ENVIRONMENTAL PROTECTION AGENCY (EPA): be acceptable to the TEXAS COMMISSION ON ENVIRONMENTAL QUALITY (TCEQ) and conform to American National Standards Institute/National Sanitation Foundation (ANSI/NSF) for use with potable water.

9. The polymer will be similar to CLARIFLOC C-6266 PWG (Polydyne, Inc.) F-2008P (Chemnation, Inc.) Polymer characteristics, or an approved equal. Any vendor proposing an approved equal must first perform an integrity evaluation analysis prior to submittal of Bid and be added to The City’s Approved list of Polymers (failing to submit analysis will deem bid non responsive):

a. Appearance – Milky

b. Ionic Character – Cationic

c. Charge Density – very high

d. Molecular Weight – very high

e. Approximate Bulk Density – 1.04

f. Average Non-Volatile Solids (%) – 47

g. Recommended working concentration (g/l) – 10

h. Bulk Viscosity – (cps) – 1200

i. Stability of D.I. Solution (days) – 1

j. Dilution to Obtain 5 g/l Active Content – 92

k. Approximate viscosity @ 5 gll Active Content (cps) – 1600

l. Storage Temperature (Degree C) – 0-35

m. Shelf Life (months) – 6