SW_-_WTE_-_SS_-_NELs_Consulting_Services_Inc_-_Air_Flow_Probes_for_Combustion_Control_-_12-17-2025_2_(part_1)_-_signed.pdf

SINGLE SOURCE

CERTIFICATE OF CONDITIONS AND CIRCUMSTANCES

Instructions: The purpose of this form is to certify conditions and circumstances for the purchase of goods and services under the single source exception to the competitive bid process. This request is to be executed by the Department Director and submitted to the Purchasing Department for consideration and approval/disapproval.

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Conditions and special circumstances for the Single Source. Please be specific:

Requesting Department Director’s Signature Date of Request

Requisition Number Buyer Name

Purchasing Department Action:

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Single Source NELs Consulting Services Inc. Air Flow Probes for Combustion Control

Conditions and special circumstances for the Single Source. Please be specific.

The McKay Bay Waste-to-Energy Facility requires completion of a combustion air-profile optimization project that was initiated in 2019 and not fully executed due to the facility transition and COVID-related travel restrictions. As a result, the existing air profiles in the boilers do not fully reflect the intended final configuration, which limits operators’ ability to optimally control combustion.

The original project included detailed analysis of boiler air distribution, development of optimized air profiles, and unit-specific recommendations based on historical testing, baseline data, and as-built conditions at the time. Portions of this work were completed, generating facility-specific data and analytical frameworks that remain directly applicable to the current units.

With the completion of the facility retrofit, conditions now exist to finalize this work and implement the remaining recommendations. Completing the project will allow for improved control of over-fire and under-fire air, enhanced combustion efficiency, and reduced operational variability, supporting consistent environmental compliance.

Continuation of the original project using the same analytical approach and historical datasets avoids duplication of prior engineering efforts, reduces schedule risk, and ensures consistency with previously established combustion models and assumptions.

Completion of this effort represents one of the final combustion optimization initiatives planned for all units at the McKay Bay Waste-to-Energy Facility and is expected to provide long-term operational and compliance benefits.

7334 Garner Rd, Niagara Falls, Ontario, Canada, L2H 0X8 T 905-682-2969 www.nels.ca

December 15, 2025

CP26-006

To: Whom It May Concern

Reference: WASTE-TO-ENERGY FACILITIES

Supply of NELS Flow Probes

This letter is to confirm that NELS Consulting Services Inc. is working with waste-to-energy facilities as the sole supplier/distributor/manufacturer of air flow probes for combustion control.

Currently our technology is in approximately 12 waste-to-energy facilities in North America. And have been operating successfully for many years. The NELS flow probe technology is proven to be robust in this challenging waste-to-energy environment.

Contamination of other types of flow meters has been shown to be a daily maintenance battle. NELS flow probes may require cleaning during scheduled outages.

In accordance with the terms spelled out in our agreement, NELS may offer complete support of our flow probe products.

We wish to thank you for the opportunity of submitting this product; we look forward to providing our flow probes. If you any questions or require any further information please do not hesitate to contact me.

Yours very truly, Al Gacnik

Project Manager

T 905-682-2969 www.nels.ca

December 3, 2025

CP26-006

City Of Tampa 107 North 34th St, Tampa, Florida 33605 (813)348-3219

Attention: Mr. M. Frasca

Reference: MCKAY BAY WASTE-TO-ENERGY FACILITY

Unit Nos. 1 to 4 – Supply of NELS Flow Probes

With reference to recent conversation, we are pleased to submit the following proposal to supply flow probes for Unit Nos. 1, 2, 3 & 4 NELS flow probes were provided to McKay Bay for Unit No. 1, total primary and total secondary ducts in 2019 (NELS reference P074.19, McKay Bay PO# 13191146). These were not calibrated due to COVID 19 travel restrictions and after the pandemic was over the calibrations were not completed. The costs detailed below are for supplying an additional three (3) sets of total primary and three (3) sets total secondary NELS flow probes c/w Emerson pressure transmitters and manifolds for Unit Nos 2, 3 & 4. Also NELS flow probes will be supplied for Unit Nos 1 to 4 for the secondary rear and zones 1 to 5 ducts. These will also include Emerson pressure transmitters and manifolds.

1.0 SCOPE OF SUPPLY

1.1 SUPPLY OF NELS FLOW PROBES – Unit Nos. 1, 2, 3 & 4

To supply a new sets of NELS flow probes for Unit Nos. 1 to 4. The following is the list of probes to be provided:

i) Total Primary – Unit Nos. 2, 3 & 4 – three (3) complete sets for the 32” x 32” duct

ii) Total Secondary – Unit Nos. 2, 3 & 4- three (3) complete sets for the 32” x 22.5” ducts

iii) Secondary Rear – Unit Nos. 1 to 4 – four (4) complete sets

iv) Zone 1 – Unit Nos. 1 to 4 – four (4) complete sets

CP26-006 – December 3, 2025 2 City of Tampa – McKay Bay – NELS Flow Probes - Unit Nos. 1 to 4

v) Zone 2 – Unit Nos. 1 to 4 – four (4) complete sets

vi) Zone 3 – Unit Nos. 1 to 4 – four (4) complete sets

vii) Zone 4 – Unit Nos. 1 to 4 – four (4) complete sets

viii) Zone 5 – Unit Nos. 1 to 4 – four (4) complete sets

1.2 NELS FLOW PROBE CALIBRATION

The online flow probe calibrations are required to be completed on all four units. A proposal calibration will be provided

1.3 DETAILS OF NELS FLOW PROBES

A complete set of flow probes for all four (4) units would be supplied. Each flow probe would measure the air flow velocity pressure in the specific duct. The NELS flow probes for each location would have two (2) flow elements. The NELS flow probes require a connection to a differential pressure transducer and manifold. The connections to the transducer and manifold would be completed by the McKay Bay facility. The supply of the transducers and manifolds are included in the cost in this proposal.

The velocity pressure reading from the new NELS flow probes would send a signal to the DCS which would convert the signal to a flow measurement in KACFM. The flow indication in the DCS would also have a correction curve built in to allow for calibration over various operating flow ranges. To be completed by NELS at a future date. All DCS programing would be completed by McKay Bay facility personnel.

1.4 SUPPLY OF PRESSURE TRANSMITTERS AND MANIFOLDS

The following pressure transmitters and manifolds would be supplied for each flow probe:

Emerson pressure transmitters 3051CD1A02A1AS5M5 calibrated 0 to 2”H2O Emerson manifold 0305RC32B21B4 – mounted to pressure transmitter

2.0 CLIENT RESPONSIBILITIES

The client will provide the following for this scope of work:

2.1 NELS FLOW PROBE – INSTALLATION

i) Installation of supplied probe supports

CP26-006 – December 3, 2025 3

ii) Installation NELS flow probes to the probe supports

iii) Installation of new differential pressure transmitters and manifolds

iv) Connect the NELS flow probes to the differential pressure transducer and manifold and connection of transmitter to DCS.

3.0 PROJECT SCHEDULE

3.1 SUPPLY OF NELS FLOW PROBES

i) Manufacturing NELS Flow Probes 3 weeks

ii) Delivery 1 week

4.0 PROJECT COST – NELS FLOW PROBES

4.1 SUPPLY OF FLOW PROBES – Unit Nos. 1, 2, 3 & 4

“The cost is based on 30 sets of flow probes ordered.”

Unit No. 1 - Total $45,000.00 US

i) secondary rear - two(2) flow elements $7,500.00 US

ii) zone 1 primary - two(2) flow elements $7,500.00 US

iii) zone 2 primary - two(2) flow elements $7,500.00 US

iv) zone 3 primary - two(2) flow elements $7,500.00 US

v) zone 4 primary - two(2) flow elements $7,500.00 US

vi) zone 5 primary - two(2) flow elements $7,500.00 US

Unit No. 2 - Total $60,000 US

i) total primary - two(2) flow elements $7,500.00 US

ii) total secondary - two(2) flow elements $7,500.00 US

iii) secondary rear - two(2) flow elements $7,500.00 US

iv) zone 1 primary - two(2) flow elements $7,500.00 US

v) zone 2 primary - two(2) flow elements $7,500.00 US

vi) zone 3 primary - two(2) flow elements $7,500.00 US

vii) zone 4 primary - two(2) flow elements $7,500.00 US

viii) zone 5 primary - two(2) flow elements $7,500.00 US

Unit No. 3 - Total $60,000 US

i) total primary - two(2) flow elements $7,500.00 US

ii) total secondary - two(2) flow elements $7,500.00 US

iii) secondary rear - two(2) flow elements $7,500.00 US

iv) zone 1 primary - two(2) flow elements $7,500.00 US

CP26-006 – December 3, 2025 4

v) zone 2 primary - two(2) flow elements $7,500.00 US

vi) zone 3 primary - two(2) flow elements $7,500.00 US

vii) zone 4 primary - two(2) flow elements $7,500.00 US

viii) zone 5 primary - two(2) flow elements $7,500.00 US

Unit No. 4 - Total $60,000 US

i) total primary - two(2) flow elements $7,500.00 US

ii) total secondary - two(2) flow elements $7,500.00 US

iii) secondary rear - two(2) flow elements $7,500.00 US

iv) zone 1 primary - two(2) flow elements $7,500.00 US

v) zone 2 primary - two(2) flow elements $7,500.00 US

vi) zone 3 primary - two(2) flow elements $7,500.00 US

vii) zone 4 primary - two(2) flow elements $7,500.00 US

viii) zone 5 primary - two(2) flow elements $7,500.00 US

Total Cost - Unit Nos. 1, 2, 3 & 4 - $225,000.00 US Payment Schedule 50% upon awarding of project, Net 30 days 50% upon delivery of flow probes, Net 30 days

4.2 Shipping Costs

The cost to ship the manufactured flow probes from NELS would be $2000.00 US.

4.3 Summary of Costs

NELS flow probes – as per section 8.1 $225,000.00 US pressure transmitters and manifolds thirty (30) complete sets of NELS flow probes – Unit Nos. 1, 2, 3 & 4

Shipping- NELS flow probes $2000.00 US

Total for Unit Nos. 1 to 4 $227,000.00 US

We wish to thank you for the opportunity of submitting this proposal; if you any questions or require any further information please do not hesitate to call our office.

T 905-682-2969 F 905-682-6302 www.nels.ca

December 3, 2025

CP26-007

City Of Tampa 107 North 34th St, Tampa, Florida 33605 (813)348-3219

Attention: Mr. M. Frasca

Reference: MCKAY BAY WASTE-TO-ENERGY FACILITY

Unit Nos. 1 to 4 – NELS Flow Probe Calibration & Tramp Air

With reference to our recent discussions, we are pleased to submit the following proposal to calibrate all of the NELS flow probes and to measure the tramp air at the McKay Bay facility. There will be two (2) phases to the calibrations.

Phase 1 - One unit – first unit to have an outage in 2026 – NELS flow probes to be installed during the outage and calibrated right after installation

Phase 2 - three units – NELS flow probes installed in all three remaining units during separate outages and the calibrations from the first unit temporarily entered for the new units until the calibrations for the remaining three (3) units can be completed in one (1) TRIP

The following is a breakdown of our proposal:

1. Objectives

2. Scope of Work

3. Personnel and Responsibilities

4. Client Responsibilities

5. Safety Considerations

6. Statement of Quality Assurance

7. Project Schedule

8. Project Cost

9. Deliverables

10. Liability

CP26-007 – December 3, 2025 2 City of Tampa, McKay Bay Facility – Calibration and Tramp Air - Unit Nos. 1 to 4

1.0 OBJECTIVES

1.1 Flow Probes

The following new NELS flow probes will be calibrated on line over two (2) individual trips to site:

i) Total Primary – Unit Nos. 1 to 4

ii) Total Secondary – Unit Nos. 1 to 4

iii) Secondary Rear – Unit Nos. 1 to 4

iv) Zone 1 - primary – Unit Nos. 1 to 4

v) Zone 2 - primary – Unit Nos. 1 to 4

vi) Zone 3 - primary – Unit Nos. 1 to 4

vii) Zone 4 - primary – Unit Nos. 1 to 4

viii) Zone 5 - primary – Unit Nos. 1 to 4

1.2 Tramp Air

The tramp air measurements will be completed at the SDA inlets and the ID fan inlets of all four (4) units at the McKay Bay facility over the two (2) trips to site. These will be measured using the following three NELS test methods:

Test Method 1 – from %O2 measurements

Test Method 2 – from plant CEM %O2

Test Method 3 – from measured flue gas flows and indicated supply air flows

2.0 SCOPE OF WORK

In order to achieve the above objectives the following scope of work has been proposed.

2.1 Flow Probe Calibration

Each flow probe would be calibrated at various flow settings. Typically, the flow probes are calibrated at flows close to 25%, 50% and 75% of the maximum flow for the specific location. The measured flows would be compared with the control room indicated flow for instrument accuracy. All system pressures and damper settings would be recorded during the test program. These tests would be completed with each unit on line. The control room flows would be retrieved by means of an averaging block, which is already installed at the McKay Bay facility.

The first unit going into an outage next year will have all the Nels flow probes installed and calibrated. The remaining three (3) units with have probes installed during their outage. Calibration or function generators from the first testing will be inputted into each

CP26-007 – December 3, 2025 3 unit. The final calibration and tramp for the reaming units will be completed on the second visit to the plant.

3.0 PERSONNEL AND RESPONSIBILITIES

The flow probe calibration program will consist of two (2) trips to site, set-up, and on-site testing. A two person test crew would be required for the complete flow probe calibration tests.

4.0 CLIENT RESPONSIBILITIES

The client will provide the following for this scope of work:

4.1 Flow Probe Calibration

i) Satisfactory operation of all system instrumentation.

ii) Safe access to the sampling ports and associated platforms.

iii) Pertinent unit operating data will be collected by McKay Bay and provided to NELS.

5.0 SAFETY CONSIDERATIONS

NELS will abide by the safety rules set forth by the facility and will provide all test personnel with climbing gear, hard hat, safety glasses, work gloves, boots, hearing protection, MSDS sheets and communication gear.

In situations where test personnel are exposed to falls 6 feet or greater, full body harnesses with proper lines and abrasion guards will be utilized as fall protection.

6.0 STATEMENT OF QUALITY ASSURANCE

NELS has a team of qualified and experienced environmental professionals on staff. As the majority of our testing work is done for compliance purposes, strict QA/QC procedures are incorporated into our test procedures. Trained personnel will conduct testing with extensive experience in refuse to energy boiler performance testing.

CP26-007 – December 3, 2025 4

7.0 PROJECT SCHEDULE

7.1 Flow Probe Calibrations and Tramp Air

7.2 PHASE 1 – single unit

Day 1 Mobilize

Day 2 Total Primary, total secondary and secondary rear

Day 3 Zone 1, 2 and 3

Day 4 Zone 4 and 5

Day 5 Tramp air

Day 6 Demobilize

7.3 PHASE 2 – three remaining units

Day 1 Mobilize

Day 2 Total Primary - three units

Day 3 Total secondary – three units

Day 4 Secondary rear – three units

Day 5 Zone 1 – three units

Day 6 Zone 2 – three units

Day 7 Zone 3 – three units

Day 8 Zone 4 – three units

Day 9 Zone 5 – three units

Day 10 Tramp air

Day 11 Tramp air

Day 12 Demobilize

8.0 PROJECT COST

8.2 Flow Probe Calibration & Tramp Air

The flow probe calibrations and tramp would require a total of two (2) technicians to complete the scope of work for both visits. The costs for the calibration of the new flow probes for Unit Nos. 1 to 4 at the McKay Bay facility would be as follows:

CP26-007 – December 3, 2025 5

Phase 1 – single unit – (2 people, 4 days on site) $20,000.00 US.

Phase 2 – three units – (2 people, 10 days on site) $33,900.00 US.

The cost estimations to complete the flow probe calibrations as per the scope of work are based on previous experience and the assumption that none of the tests are delayed in any way because of operational malfunction or any other factors beyond NELS control. The availability of the unit for testing is subject to approval by McKay Bay. Should a test be delayed or aborted due to system or unit operational constraints NELS Inc. shall accommodate such constraints to the best of its efforts. Should the delay be longer than two days, the NELS technicians will be sent home and McKay Bay will be billed all costs up to the delayed period. The testing will be rescheduled and a new cost will be issued based on what needs to be completed as per the original scope of work.

9.0 DELIVERABLES

The following would be presented upon completion of each flow probe calibration test program:

1. Provide preliminary test results – air flow

2. Complete Final Report - 4 weeks

10.0 LIABILITY

NELS would conduct the field study to normal engineering standards and to the satisfaction of McKay Bay; however satisfactory operation of the full size installation would be the sole responsibility of McKay Bay or others.

We wish to thank you for the opportunity of submitting this proposal; if you any questions or require any further information please do not hesitate to call our office.