Specifications - Odor & Corrosion Control Program

Chemicals, equipment, labor and services shall be provided under this contract to meet the requirements of the Town of Waterford Utility Commission Odor and Corrosion Control Program (OCCP). The program will include the supply of Bioxide® AQ and VX-456® or approved equal as well as all of the services and equipment needed to fulfill the specified program requirements. The chemicals, equipment and services required under this contract shall be provided by a single vendor. A mandatory pre-bid meeting will be held on March 26, 2026 at 10:00 am at the Utility Commission 1000 Hartford Turnpike Waterford, CT, 06385. All potential bidders will be accompanied by Utility Commission staff to representative pumping stations following the meeting.

Odor Control Solution

Item 1 – BIOXIDE® AQ or approved equal

Bioxide® AQ or approved equal Estimated yearly requirements – 35,000 gallons.

The material required under this specification shall be used to remove hydrogen sulfide, thereby preventing odor and corrosion within wastewater collection and treatment systems. The material shall utilize and enhance naturally occurring biochemical processes to accomplish hydrogen sulfide removal. The material shall inhibit the sulfate reducing bacteria’s ability to use sulfate as an oxygen source. The material shall be a blend of ammonium calcium nitrate double salt and anthraquinone. The material shall be a liquid phase product. It shall be delivered, stored and fed into the wastewater via standard liquid phase chemical handling procedures. The material shall be fully compatible with storage and feed equipment constructed of any of the following.

1. High Density Cross Linked Polyethylene

2. PVC

3. Polypropylene

4. Fiberglass Reinforced Plastic (FRP)

5. Stainless Steel

The material supplied shall utilize the inherent ability of the facultative bacteria normally present in wastewater to metabolize hydrogen sulfide and other odor-causing, reduced sulfur compounds.

The material shall provide nitrate oxygen to the wastewater to support this biochemical mechanism. The product shall contain a minimum of 3.5 pounds of nitrate oxygen per gallon and the BIOXIDE® solution shall have a crystallization point of less than -20 degrees F. A crystallization chart shall be provided with the bid.

Products containing less than 3.5 pounds of nitrate oxygen per gallon with a crystallization point of higher than -20 degrees F will not be accepted. The core product of the BIOXIDE® AQ (calcium nitrate double salt) shall be manufactured in a facility that complies with the following certifications. Proof of compliance with all listed standards must be provided with the bid.

Waterford UItility Commission

• ISO 9001 – Quality Management System

• ISO 14001 – Environmental Management System

• ISO 45001 – Health and Safety Management System

The material shall be chemically stable, allowing continuous removal of sulfide contributed by side streams downstream of the application point. The Town is aware that Bioxide®, Bioxide®-AQ, Bioxide® AE, BIOXIDE® Plus 71, AQUIT and Full Service Odor Control are trademarks of Evoqua Water Technologies. Thus, all bidders bidding Bioxide® AQ shall include the cost of any licensing fees that may be required in their bid price. This license shall be submitted on the letterhead of the company that owns any pertinent patents and the letter must be signed by an officer of that Company.

Item 2 – VX-456® or approved equal

VX-456® or equal approved equal Estimated yearly requirements – 1,500 gallons.

The material required under this specification shall be used to control malodors within wastewater collection and treatment systems. The material shall react quickly, with sulfides and other odor causing compounds at the point of application and continue to control odors in the downstream waste steam. The material shall be a selective oxidant with specificity to sulfides and related odor causing compounds. The material shall not react to form chlorinated organic by-products. The material shall be a liquid phase product. It shall be delivered, stored and fed into the wastewater via standard liquid phase chemical handling procedures. The material shall be fully compatible with storage and feed equipment constructed of any of the following.

1. High Density Cross Linked Polyethylene

2. PVC

3. Polypropylene

4. FRP

The material shall have a crystallization point of less than -24 degrees C.

Products with a crystallization point of higher than -24 degrees C will not be accepted. Product shall be manufactured in a facility that complies with the following certification. Proof of compliance with all listed standards must be provided with the bid.

• ISO 9001:2015 – Quality Management System

The price for the products shall be a delivered price (freight included) and shall be submitted as a price per gallon of solution. Per gallon pricing shall be provided on the appropriate line item in the bid. Bidders shall also provide the minimum nitrate oxygen content of the BIOXIDE® AQ as well as the crystallization points of both products. Failure to provide all information required in this bid may cause your bid to be declared nonresponsive.

Deliveries shall be made within 48 hours of order placement. Product shall be based on deliveries of 500 – 3,800 gallons per shipment. In addition, some deliveries will be “split” between two or more locations and there will be no extra charges allowed for multiple stop deliveries. Tractor Trailer access to some of the Pump Stations is not possible and thus, suppliers must be able to deliver product via smaller, non-articulating straight trucks. Deliveries shall be made in trucks that are owned and operated by the bidder and drivers shall be direct employees of the bidder. Proof of the ability to deliver via straight trucks shall be provided with the bid. Bidders shall provide their DOT number and current FMCSA safety rating information with the bid. Deliveries will be made between the hours of 7 am and 3 pm Monday through Friday.

Bioxide® AQ, or equal, deliveries shall be made as required to the following locations:

1. Graniteville Pumping Station 250 Rope Ferry Rd Waterford, CT. 06385

2. Bolles Ct Pumping Station 528 Mohegan Ave. Pkwy.

Waterford, CT. 06375

3. Mago Point Pumping Station 12-4th Street Waterford, CT. 06385

4. Oil Mill Rd Pumping Station 25 Oil Mill Rd Waterford, CT. 06385

5. Oswegatchie Rd Pumping Station 46 Oswegatchie Rd Waterford, CT. 06385

6. Seaside Pumping Station 36 Shore Rd.

Waterford, CT. 06385

7. Ridgewood Pumping Station 2 Shore Rd Waterford, CT. 06385

VX-456® or equal deliveries shall be made to any future locations, as required by the Town.

Feed and Storage Systems

Item 1 – Advanced Dosing Controller

The successful bidder shall provide complete Storage and Feed systems with Advanced Dosing Controllers at the following sites:

• Bolles Court Pump Station

• Mago Point Pump Station

• Oswegatchie Rd Pumping Station

• Oil Mill Rd Pumping Station

• Ridgewood Pumping Station

The Advanced Dosing Control system shall be a Versadose® LT control system as supplied by Evoqua Water Technologies LLC, or approved equal. Storage tanks shall be appropriately sized for each location. The bidder shall provide this storage and feed system at the above locations for a flat monthly fee per site. The monthly fee bid pricing shall be provided on the appropriate line item in the bid. The monthly fee shall also be valid for any future systems that the Town may add during the course of the contract.

The Advanced Dosing Control system shall provide the following as a minimum:

A. General. The operation of the Chemical Feed System shall be controlled from a Control Panel located in a stainless steel cabinet. All equipment control switches, pilot lights, controllers, etc. and the chemical feed pumps shall be housed in this cabinet.

B. Enclosure. The control panel enclosure shall be constructed of 316 stainless steel and shall be rated NEMA 4X. It shall be equipped with a door with a continuous hinge. The hinged door shall have two latches and shall be capable of locking via a padlock. The enclosure shall be mounted on the control stand, which shall contain the heated calibration stand.

C. Components.

a. The Control Box Shall Contain the following:

1- Operator Interface with monochrome display and integrated tank level indication

1- On/Off Switch for auxiliary equipment with LED Indicator Light 2- Off/Auto Switches for pump control with LED Indicator Lights 1- Set of Contacts with surge arrestor to accept Tank Level device 1- Cellular Modem for remote communication *- Panel shall have the capability to accept a Resistance Temperature

Device

b. The control stand shall contain the following:

2- Bellows Chemical Dosing Pumps 1- Calibration Cylinder 1- System cooling fan

D. Controls Layout. All manually operated controls (control switches, pilot lights etc.) shall be located on a panel behind the enclosure door. The panel shall be outfitted with a main power disconnect located in the Control Stand.

E. Standards. All control system design, fabrication, and wiring shall conform to the standards of Underwriters Laboratories, National Electrical Code, and any other applicable federal, state, or local codes.

F. System Operation. Chemical Feed Pumps. The chemical feed pumps shall be controlled by a two-position OFF/AUTO switch. The control system shall utilize 24 discrete dosing set points, one set-point for each hour of the day. It shall be possible to utilize 24 different discrete dosing set-points for each day of the week. Control systems utilizing less than 168 discrete flow set-points per week shall not be acceptable.

1. When in the AUTO position, the pump shall be controlled by the advanced dosing controller. The advanced dosing controller shall vary the feed rate in 1-hour increments as specified by the user. The pumps shall be turned on and off by the advanced dosing controller to match the specified dose curve. The system shall have the capability to automatically adjust the feed rate based on wastewater temperature.

2. System shall automatically calculate and dose the specified volume of product with either one pump or two pumps activated. System shall have the capability to verify the volume dosed matches the preset curve via the tank level and shall alarm at three preset tank levels.

3. Automatic functions shall be protected by one-level security.

4. Flow set points shall be linearly interpolated to provide for smooth flow curve for each day.

5. Systems shall be capable of dosing from seven different flow curves. Daily flow curves shall also be adjustable by a global setting to increase the feed rate percentage across all 24 daily set points.

6. System shall allow user to copy daily curves from one day to another for ease of set-up.

7. System shall have selectable High-Low-Empty digital output alarms and provide for remote customer lockout contacts for remote customer shutdown.

8. Feed pumps shall have the capability to be interlocked with the sewage pumps and shall have the capability to be automatically shut-down on empty tank alarm.

9. System shall be capable of providing alarms for tank or pipe leak detection. Optional equipment is available if both tank and pipe leak detection is required.

10. System shall accept, store, and display a totalized flow signal, run time, and lift station pump starts.

G. Pumps. Contractor shall provide two chemical metering pumps. Each pump shall be completely compatible with Bioxide® AQ. Each pump combination shall be sized to accommodate the required system dose rate at the peak and minimum wastewater flows and every point in between. The pumps shall be self-priming, capable of suction lifts when dry up to seven (7) feet, and with bellows full up to twenty (20) feet.

H. Piping & Appurtenances

1. All suction and discharge piping shall be standard ½”, Schedule 80 PVC. All valves, fittings, and connectors shall be Schedule 80 PVC.

2. All fill line piping shall be 2" Schedule 80 PVC. All fill line valves, fittings, and connectors shall be Schedule 80 PVC.

3. Fill line shall have a 2" stainless steel male camlock with a 2" plastic female camlock cap.

4. All chemical feed seals shall be compatible with the chemicals to be used in the regular operation, maintenance, and cleaning of the feed system.

5. All fittings shall be solvent-welded or threaded.

6. Chemical feed discharge lines must be installed so that the product is injecting directly into the waste streams and not onto structures or equipment.

I. Level Indication. The manufacturer shall provide one ultrasonic tank level indicator inclusive to the system controller. The system shall utilize an ultrasonic signal to measure the tank liquid level. The system shall contain 3 adjustable relays to allow for alarms and other electrical uses, as well as one 4 – 20 mA output.

J. Website Access. The manufacturer shall provide a single website where all aspects of the odor control program can be monitored and controlled at any and all times. Access to the website shall be protected by username and password level security. Access to the website shall be provided to the Town for viewing. Screen shots of the website shall be provided with the bid.

Item 2 – Stainless Steel 2 pump 2 timer cabinet

The successful bidder shall provide storage and feed systems with simpler, two-pump/two-timer control systems. Storage tanks shall be appropriately sized for each location. Systems with two-pump/two-timer control systems shall be provided at the following locations:

• Graniteville Pumping Station

• Seaside Pumping Station

The two-pump/two-timer control systems shall be as supplied by Evoqua Water Technologies, LLC, or approved equal. Storage tanks shall be appropriately sized for each location. The bidder shall provide these storage/feed systems at the above locations for a flat monthly fee per site. The monthly fee bid pricing shall be provided on the appropriate line item in the bid. The monthly fee shall also be valid for any future systems that the Town may add during the course of the contract.

The 2 pump 2 timer control systems shall provide the following as a minimum:

A. General. The operation of the Chemical Feed System shall be controlled from a Control Panel. All equipment control switches, pilot lights, controllers, etc. and the chemical feed pumps shall be housed in this panel.

B. Enclosure. The control panel enclosure shall be constructed of 316 stainless steel and shall be rated NEMA 4X. It shall be equipped with a door with a continuous hinge. The hinged door shall have two latches and shall be capable of locking via a padlock. The enclosure shall be mounted on the control stand.

C. Components

a. The control box shall contain the following

2- 24 Hour Time Clocks 1- 15 Amp Circuit Breaker, 115 volt 1- Ground Fault Receptacle 5- On/Off Switches with LED Indicator Lights 2- Chemical Feed Pumps 1- Cooling Fan 2- Dry Contact to Receive Signal from Remote Source

b. The control stand shall contain the following:

2- Bellows Chemical Dosing Pumps

1- Calibration Cylinder 1- System cooling fan

D. Controls Layout. All manually operated controls (control switches, pilot lights, etc.) shall be located on a panel behind the enclosure door. The panel shall be outfitted with a main power disconnect located in the Control Stand.

E. Standards. All control system design, fabrication, and wiring shall conform to the standards of Underwriters Laboratories, National Electrical Code, and any other applicable federal, state, or local codes.

F. System Operation. Chemical Feed Pumps. The bellows pump shall be controlled by a three-position HAND/OFF/AUTO switch. When in the AUTO position the pump shall be controlled by a timer. The timer shall turn the pump on and off based upon preset time intervals.

When in the HAND position the pump shall run, regardless of the preset time interval.

Either one or both chemical feed pumps may turn on or off at preset speeds and preset times.

G. Pumps. Contractor shall provide two chemical metering pumps. Each pump shall be completely compatible with Bioxide® AQ. Each pump combination shall be sized to accommodate the required system dose rate at the peak and minimum wastewater flows and every point in between. The pumps shall be self-priming, capable of suction lifts when dry up to seven (7) feet, and with bellows full up to twenty (20) feet.

H. Piping & Appurtenances

1. All suction and discharge piping shall be standard ½”, Schedule 80 PVC. All valves, fittings, and connectors shall be Schedule 80 PVC.

2. All fill line piping shall be 2" Schedule 80 PVC. All fill line valves, fittings, and connectors shall be Schedule 80 PVC.

3. Fill line shall have a 2" stainless steel male camlock with a 2" plastic female camlock cap.

4. All chemical feed seals shall be compatible with the chemicals to be used in the regular operation, maintenance, and cleaning of the feed system.

6. All fittings shall be solvent-welded or threaded.

7. Chemical feed discharge lines must be installed so that the product is injecting directly into the waste streams and not onto structures or equipment.

Service Requirements

Optimization

The Bioxide® AQ and VX-456® solutions will be used for odor and corrosion control. The Contractor shall supply all field personnel and testing equipment needed during initial optimization of the systems. Testing to be performed shall include the following:

1. Dissolved sulfide (grab samples)

2. Atmospheric H2S (continuous monitoring with Odalog)

3. Wastewater Temperature (grab samples)

4. Wastewater pH

5. Chemical Residual

Each system shall be optimized to achieve the treatment goals established by the Town. These goals are as follows: at each and all the [seven stations] receiving outfall manholes, a monthly average concentration no higher than 5.0 ppm vapor H2S, and a peak of no more than 15 ppm at any given time.

Routine Monitoring, Reporting, and Maintenance

In order to sufficiently monitor the performance of the program, VaporLinks®, or approved equal shall be provided by the bidder. The VaporLinks® shall be hydrogen sulfide monitors that have the ability to continuously monitor H2S levels at the control points and transmit the data to the same internet website that receives the feed system and tank level information from the Advanced Dosing Controllers. These monitors shall be VaporLink® hydrogen sulfide data loggers, or equal. The VaporLink systems shall contain a cellular modem. The VaporLink® systems shall continuously monitor the H2S levels at each control point listed below. The VaporLink® systems shall send the data to the internet website at least every four hours. The VaporLink® systems shall also be able to send the data to the website immediately if an alarm condition occurs (if H2S exceeds a predetermined set-point) and the website shall then have the ability to send alarms to the supplier and to the Town via email, phone or text messaging. The supplier shall provide the VaporLink® systems based for a flat monthly fee as indicated in the bid. The supplier shall maintain ownership of the VaporLink® systems and will be responsible for all maintenance and repair of these systems.

Initially, VaporLink systems shall be required at the following control points:

• Logger Hill MH

• Ridgewood FM Outfall MH

• Bolles Court FM Outfall MH

• Oswegatchie Rd FM Outfall MH

The bidder shall provide these VaporLinks® at the above locations for a flat monthly fee per site. The monthly fee bid pricing shall be provided on the appropriate line item in the bid. The monthly fee shall also be valid for any future systems that the Town may add during the course of the contract.

The contractor shall maintain a minimum of two (2) technicians for routine wastewater analysis, equipment maintenance, and other services. The names, locations and years of service for each Technician shall be provided with the bid. The Technicians shall be direct employees of the bidder, subcontractors will not be allowed.

Liquid phase sulfide monitoring shall be conducted at each control point at least once every 60 days and the analysis shall include the following:

• Total sulfide, mg/L

• Atmospheric hydrogen sulfide, ppm

• Temperature, F

• pH

• Chemical residual

All wastewater analyses conducted shall be tabulated and submitted in a monthly summary. These reports shall include the following:

• Raw data of all aqueous tests performed

• Graphs of continuous atmospheric hydrogen sulfide monitoring sessions

• Year-to-date charts of sulfide levels and chemical dose rates

• Year-to-date charts of chemical usage rates

• On-going Project Summary

• Monthly and year-to-date chemical delivery summary

All liquid samples collected will be grab samples. Acceptable methods of analysis are listed below:

Liquid Sample Procedure Total Sulfide Std. Methods 4500-S2- D Methylene Blue Dissolved Sulfide Std. Methods 4500-S2- D Methylene Blue using pre-flocculation pH Combination glass electrode Temperature NIST calibrated thermometer Residual Nitrate HACH Nitrate/Nitrite test strip

The contractor shall be responsible for all aspects of the equipment maintenance including the repair and replacement or worn out or damaged equipment.

Contractor shall be capable of responding to any odor issue (complaint) within two hours of notification.

Web-Based Monitoring and Control

Contractor must provide inventory control, schedule all chemical deliveries and provide, operate and maintain chemical feed systems for the life of the service agreement to meet the established goals of the odor control program. Contractor is required to provide a cellular based remote telemetry control system for continuous monitoring of the chemical feed systems as indicated above. The data from these systems shall be able to be displayed on any web enabled device in a neat and organized manner. The control system shall have the following capabilities:

• Tank level – Monitoring for inventory management, scheduling deliveries and usage verification

• Dosage control – Must be capable of programming a different dosage for each hour of the day with a different 24 hour profile for each day of the week. Customer/Contractor must be able to adjust the dose profile remotely via the internet or onsite.

• Real Time Alarms – Must have the ability to alarm due to deviations from established dose rate, tank High/Low level, tank empty, and high H2S.

• Notification – The system must be capable of sending text messages and emails to the contractor and select Town personnel in the event of any alarm condition listed above

• Data Storage/Recall – All data shall be maintained on the contractor provided website (Link2Site.com or as proposed). Data shall be accessible via a color graphical interface and shall be able to be viewed on an x-y chart for any time period recorded. Data shall be able to be exported and saved in the *.xls format.

• Contractor shall provide the Town a username and password to access Link2Site with the permission to view all data collected for these sites and make dose adjustments.

Bidder shall include all required information with their bid. Failure to provide this information may cause your bid to be considered nonresponsive. Information required shall include but not be limited to:

1. Material Safety Data Sheets for the products, showing the CAS numbers of the materials.

2. Product specification sheets for both products that show compliance with all aspects of this specification.

3. Contractor Data Sheet – Minimum of 3 references that are currently using the specified products for odor and corrosion control. References shall include contact information (names, phone numbers, and e-mail addresses). All 3 references must have used the product for 5 or more years. These references shall be for systems similar in size to the Town of Waterford where the bidder is providing testing and optimization services similar to what is required by the Town. A sample report from three of these systems shall be included with the bid.

4. Technical documentation detailing the processes by which both materials control hydrogen sulfide. This documentation shall clearly show the stoichiometry of the chemical reactions and describe a minimum of three case studies.

5. Technician Reference List with addresses

6. Information on the website including screen shots showing how H2S, tank levels and feed rates are depicted

7. The bidder shall be an Underwriters Laboratories or Electronic Testing Labs Listed manufacturer of Enclosed Industrial Control Panels. Proof of UL or ELT certification shall be provided with the bid.