D_-_Service_to_Provide_Chlorine_Dioxide.pdf

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.

(9/2023 – 10/2024) - 245,000 lbs. Estimated Sodium Chlorite (12 month supply)

For a Total supply of 245,000 lbs. – Sodium Chlorite for a 1 year supply (45,000 lbs. Minimum Shipment)

1. 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.

2. 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.

3. 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.

4. 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.

5. 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:

Active Ingredient: 25% (+/- 1% by wt.) Na CLO2 Inert ingredient: 75% (+/- 1% by wt.) H2O

Appearance: Pale yellow slightly hazy liquid Shelf Life One (1) year, minimum Density: 10.3 to 10.5 lbs./gallon

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.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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)

15. 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.

16. 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: _____________________________________________