Clarifier_Improvements_Memo_(Final)_(1).pdf

1117 East Robinson St.

Orlando, FL 32801

Phone: 407.425.0452 Fax: 407.648.1036

A. Background

CPH was tasked with evaluating the potential to retrofit the existing eight (8) secondary clarifiers with full-surface scum collection systems or implementing the Los Angeles Energy Dissipating Inlets (LA-EDI) systems along with full-surface scum collection systems.

Currently, the City has tangential EDI’s and conventional scum scrapers installed within the existing eight (8) clarifiers. Previously in 2016, Hazen and Sawyer drafted a tech memo concerning the clarifiers that included the concept of modifying the existing clarifiers with LA-EDI’s. The City also has experience using the LA-EDI technology at Conserv I and Conserv II, which has been successful. CPH recommended the City install full-surface scum collection systems and LA-EDI’s.

Based on recent clarifier inspection and maintenance, the City determined the entire submerged portion of the existing clarifiers shall be replaced due to the age and condition of the clarifier mechanisms. The City also expressed interest in comparing prices between different construction materials (shop coated carbon steel, hot-dipped galvanized steel (HDG), 304-stainless steel, and 316-stainless steel). CPH has since contacted Ovivo, Walker Process, and WesTech to obtain budgetary estimates based on replacing four (4) mechanisms per dry season.

B. Ovivo Clarifier

Ovivo provided a budgetary proposal for the replacement of the submerged steel for four

(4) of the existing clarifiers. The budgetary proposal has been included in Appendix A and the estimates are shown in the following table. Ovivo’s proposal includes the 100 ft diameter spiral blade mechanism and center column, LA-EDI, influent feed well, two (2) full radius skimmers, full radius scum trough, drive assembly, and freight for each clarifier.

Ovivo does not recommend using HDG steel in submerged applications, so a price has not been provided.

Equipment Material Estimate

(4) C4D-FTS Mechanisms Shop Primed Carbon Steel $1,356,000

(4) C4D-FTS Mechanisms 304-Stainless Steel $2,066,000

(4) C4D-FTS Mechanisms 316-Stainless Steel $2,772,000

Technical Memo

Date: June 2023

To: Alan Oyler & Anthony Shorter, City of Orlando

From: Dave Refling, Casie Brown, & James Moulton, CPH

Re: City of Orlando Iron Bridge Regional Water Reclamation Facility (IBRWRF)

Clarifier Improvements Evaluation

Job No. O3144

C. Walker Process Clarifier

Walker Process provided a budgetary estimate for the submerged steel replacement of four (4) of the existing clarifiers. The budgetary estimate has been included in Appendix B and the estimates are shown in the following table. Walker Process’s proposal includes the 100 ft diameter spiral blade mechanism and center column, drive assembly, LA-EDI, influent feed well, two (2) full radius skimmers and one (1) full radius scum trough, mechanical startup service, and delivery to Orlando FL. CPH also requested an additional budgetary estimate for the non-submerged bridge and platform steel along with aluminum flooring and handrails as a separate price with shop primed carbon steel or HDG costing $100,000 and stainless steel costing $180,000 for four (4) clarifiers.

(4) Clarifier Mechanisms Shop Primed Carbon Steel or HDG Steel $1,300,000 ± 10%

(4) Clarifier Mechanisms 304-Stainless Steel $2,200,000 ± 10%

(4) Clarifier Mechanisms 316-Stainless Steel $2,440,000 ± 10%

D. WesTech Clarifier

WesTech provided a budgetary proposal for the submerged steel replacement of one (1), four (4), and eight (8) of the existing clarifiers. The budgetary proposal has been included in Appendix C. WesTech’s proposal includes the 100 ft diameter spiral blade mechanism and center column, LA-EDI, influent feed well, two (2) full radius skimmers, full radius scum trough, drive assembly, startup service, and freight. The estimates for four (4) clarifiers are shown in the following table. Per our request, WesTech also provided budget estimates for the non-submerged bridge and platform steel along with aluminum flooring and handrails.

The HDG or shop primed steel budget estimate is $140,000, 304 stainless steel $230,000, and 316 stainless steel $270,000 for four (4) clarifiers. Additionally, WesTech provided a budget estimate of $150,000 for the FRP weir and scum baffle replacement for four (4) clarifiers.

(4) COPC1G Mechanisms HDG $1,520,000

(4) COPC1G Mechanisms Shop Primed Carbon Steel $1,620,000

(4) COPC1G Mechanisms 304-Stainless Steel $2,770,000

(4) COPC1G Mechanisms 316-Stainless Steel $3,310,000

E. Corrosion Concern

In addition to material selection based on pricing, concern regarding the corrosion potential within the clarifiers was discussed with respect to the different construction materials. The City conducted sampling on May 4, 2023 on the partially treated wastewater within one of the clarifiers. The results are included in the following table:

Parameter Unit Concentration

Alkalinity mg/L as CaCO3 173

Calcium mg/L as CaCO3 82

Total Dissolved Solids mg/L 294 pH - 7.1

Temperature °C 29

Using the results from the lab sampling, CPH calculated the Langelier Saturation Index (LSI), Ryznar Saturation Index (RSI), and Aggressiveness Index (AI) using both the Metcalf and Eddy (M&E) Wastewater Engineering Treatment & Resource Recovery (5e) equations and the RTW4 model. The results are provided in the following table:

Index M&E Equations RTW4 Model Classification(a)

LSI -0.57 -0.40 Undersaturated

RSI 8.24 7.89 Undersaturated

AI 11.25 11.25 Saturated

(a) M&E Classifications

CaCO3 Saturation Outcome LSI RSI AI

Undersaturated CaCO3 Remains Dissolved <0 >6.8 <10

Saturated CaCO3 Equillibrium 0 6.2 - 6.8 10 - 12

Supersaturated CaCO3 Precipitates >0 <6.2 >12

The indices results can be compared to the classification tables from the M&E Wastewater Engineering Treatment & Resource Recovery (5e). There appears to be potential for CaCO3 dissolution and minimal potential for CaCO3 scaling. An important note is the indices primary determination is with regards to CaCO3 scaling and if a water can be classified as undersaturated or supersaturated with respect to CaCO3. Further discussion during design with the selected clarifier manufacturer will be required to review the implications of the indices results and confirm the suitable construction materials.

F. Recommendation

CPH recommends that the City proceed with development of design documents for replacement of the clarifier mechanisms. Previously, HDG submerged components were selected for the Conserv I secondary clarifier improvements project. Materials and non-submerged component alternatives can be evaluated and finalized during design.

Assuming the City selects similar materials of construction, the budget estimate for four (4) mechanisms ranges from $1.3 to $1.5 million for the submerged components. It is also recommended that the City consider owner direct purchase.

Appendix A

Ovivo Budgetary Estimate

Revision Date Description Original 01/05/2023 Rev1 01/24/2023 FTS only Rev2 03/27/2023 (4) new units

BUDGET PROPOSAL Rev 2

AREA REPRESENTATIVE

PREPARED FOR

PREPARED BY

Cedric Sirantoine Phone (801) 931-3000 Fax (801) 931-3080 Cedric.Sirantoine@ovivowater.com

Ovivo USA, LLC 4246 Riverboat Road – Suite 300 Salt Lake City, Utah 84123-2583

IRON BRIDGE REGIONAL WRF

ORLANDO, FL

NEW SECONDARY CLARIFIER

MECHANISMS

CPH Engineers City of Orlando Casie O. Brown, PE Alan Oyler Dave Refling, (PE) Anthony Shorter

TSC-Jacobs North Gerald Mendez, PE geraldtscjn@verizon.net

DATE: 03/27/2023

NOTE

http://www.ovivowater.com

THIS BUDGETARY PROPOSAL CONSTITUTES A NON-BINDING ESTIMATE OF PRICE(S) FOR CERTAIN GOODS AND/OR SERVICES THAT MAY BE PROVIDED BY OVIVO USA, LLC FROM TIME TO TIME, BUT SHALL NOT BE CONSTRUED AS AN OFFER BY OVIVO USA, LLC TO PROVIDE SUCH GOODS AND/OR SERVICES.

Ovivo USA, LLC | 4246 Riverboat Road, Suite 300, Salt Lake City, Utah 84123 USA I Tel: (801) 931-3000 I Fax: (801) 931-3080 ovivowater.com CONFIDENTIAL

BUDGET PROPOSAL | Page 2

REQUEST:

Evaluation of budget pricing for the replacement of submerged steel in four (4) existing 100’ spiral blade clarifier mechanisms with four (4) new submerged mechanisms.

SCOPE OF SUPPLY:

OVIVO proposes the supply new submerged steel with 100’ diameter C4D-FTS spiral blade clarifier mechanisms with LA-EDI and full trough skimmer. Scope includes new drives.

http://www.ovivowater.com/

THIS BUDGETARY PROPOSAL CONSTITUTES A NON-BINDING ESTIMATE OF PRICE(S) FOR CERTAIN GOODS AND/OR SERVICES THAT MAY BE PROVIDED BY OVIVO USA, LLC FROM TIME TO TIME, BUT SHALL NOT BE CONSTRUED AS AN OFFER BY OVIVO USA, LLC TO PROVIDE SUCH GOODS AND/OR SERVICES.

Ovivo USA, LLC | 4246 Riverboat Road, Suite 300, Salt Lake City, Utah 84123 USA I Tel: (801) 931-3000 I Fax: (801) 931-3080 ovivowater.com CONFIDENTIAL

BUDGET PROPOSAL | Page 3

ITEM I – NEW SECONDARY CLARIFIER MECHANSIMS (submerged steel)

ITEMS INCLUDED PER CLARIFIER:

- Complete Ovivo C40HT drive assembly, with:

▪ 40” pitch diameter main gear

▪ 45” diameter ball bearing with liner strips

▪ Cast iron turntable

▪ Gear motor, chain and sprocket.

▪ Epoxy coated aluminum drive control with 3 alarm switches

Drive unit is completely factory assembled, calibrated, tested and finish painted.

- Cage, square box truss design, steel.

- Rake arms, two full radius arms, square box truss design, with spiral blades and 304 SS squeegees.

- Sludge collection manifold in carbon steel

- Center column 28” diameter x ¼” plate, flanged with influent ports, steel.

- LA-EDI, 15’ dia x 3’-0” deep, 1/4” thick plate, with eight (8) distribution nozzles.

- Feedwell 24’ diameter x 5’-6” deep x 1/4” steel plate, with supports from rake arms.

- Two (2) full radius scum skimmers with full radius scum trough and support.

- Anchor bolts, 304 Stainless Steel.

- Assembly fasteners, 304 Stainless Steel.

- Operation and Maintenance manuals.

- Service as noted in the “Field Service” section of this proposal.

- Surface preparation and paint as noted in the “Surface Preparation and Paint” section of this proposal.

- Freight, FCA factory, freight allowed to jobsite.

THIS BUDGETARY PROPOSAL CONSTITUTES A NON-BINDING ESTIMATE OF PRICE(S) FOR CERTAIN GOODS AND/OR SERVICES THAT MAY BE PROVIDED BY OVIVO USA, LLC FROM TIME TO TIME, BUT SHALL NOT BE CONSTRUED AS AN OFFER BY OVIVO USA, LLC TO PROVIDE SUCH GOODS AND/OR SERVICES.

Ovivo USA, LLC | 4246 Riverboat Road, Suite 300, Salt Lake City, Utah 84123 USA I Tel: (801) 931-3000 I Fax: (801) 931-3080 ovivowater.com CONFIDENTIAL

BUDGET PROPOSAL | Page 4

ITEMS NOT INCLUDED (But not limited to the following):

- Walkway steel truss design extending from the tank wall to the center operating platform, 3’ wide with 1-1/4" aluminum I-bar grating.

- Platform, 8ft square, steel frame and 1/4" aluminum checkered floor plate.

- Aluminum handrail around platform, 1-1/2" diameter 2-rail with 4" toe channel, mechanical system.

- Field welding. Minimal field welding will be necessary.

- Anchor templates and grout shield. We provide bolt circle dimensions for the center column and anchor positions.

- Demolition or erection services.

- Finish painting.

- Lamp posts.

- VFD controller.

- Lubricants.

- Clarifier control panel: NEMA 4X SST enclosure, uses 480VAC, 3ph, 60hz, Hand/Off/Auto selector switch, push buttons, alarm horn, test circuit.

- Electrical controls or control panels, push button stations, alarms, starters, mounting plates or brackets, conduit, wiring, mounting channels, photocells, etc...

- Stairways, access walkways, interconnecting walkways, gratings, etc., outside tank.

- Handrail around tank.

- Scum piping below or flexible connector to scum box stub nozzle.

- Dissimilar metals protection (bituminous paint or isolation tape) for aluminum handrail and grating mounted to steel walkway members. Mastic/sealant/packing is also by others.

- Tank, platform or feedwell covers of any kind.

- See general items listed hereafter.

- Any field measurements required for provision of this equipment.

WEIGHTS:

APPROXIMATE TOTAL WEIGHT OF ONE (1) MECHANISM 32,000 LBS.

APPROXIMATE WEIGHT OF THE HEAVIEST SINGLE COMPONENT 3,700 LBS.

FIELD SERVICE PER CLARIFIER:

Our proposal includes the service of a qualified service engineer for the following:

- Four (4) Days / Four (4) Trips at the site to assist in adjusting, servicing, and checking out these mechanisms, and in training the operators in maintenance, troubleshooting, and repair of the equipment. Static torque testing is included in these services.

- Additional service days can be purchased at the current rate.

THIS BUDGETARY PROPOSAL CONSTITUTES A NON-BINDING ESTIMATE OF PRICE(S) FOR CERTAIN GOODS AND/OR SERVICES THAT MAY BE PROVIDED BY OVIVO USA, LLC FROM TIME TO TIME, BUT SHALL NOT BE CONSTRUED AS AN OFFER BY OVIVO USA, LLC TO PROVIDE SUCH GOODS AND/OR SERVICES.

Ovivo USA, LLC | 4246 Riverboat Road, Suite 300, Salt Lake City, Utah 84123 USA I Tel: (801) 931-3000 I Fax: (801) 931-3080 ovivowater.com CONFIDENTIAL

BUDGET PROPOSAL | Page 5

SURFACE PREPARATION AND PAINT

Ovivo’s drive unit will receive a surface preparation of SSPC-SP-06 and will be coated with two (2) coats of Tnemec N69F and one (1) top coat of Tnemec Endura-shield 73. Gearmotors are coated by the manufacturer.

ALTERNATE 1:

Submerged fabricated steel will receive a surface preparation of SSPC-SP-06 and will be coated with one (1) coat of Tnemec N69F. Finish painting will be done onsite by contractor.

ALTERNATE 2:

Submerged fabricated steel will be 304 stainless steel.

ALTERNATE 3:

Submerged fabricated steel will be 316 stainless steel.

Surface preparation and primer for non-submerged steel is not included and shall be by contractor in each alternate.

PRICING

ITEM ALTERNATE EQUIPMENT

ESTIMATED

SHIP DATE*

PRICE

I

(primed CS) Four (4) spiral blade clarifier mechanisms C4D-FTS LA-EDI * $ 1,356,000

I

(304 SST)

Four (4) spiral blade clarifier Mechanisms C4D-FTS LA-EDI * $ 2,066,000

I

(316 SST)

Four (4) spiral blade clarifier Mechanisms C4D-FTS LA-EDI * $ 2,772,000

DELIVERY

*Ovivo will submit drawings and other information for approval within ten (10) weeks after Purchaser’s receipt of Ovivo’s written acknowledgement of an approved purchase order. Purchaser shall approve all submittals and release for fabrication no more than four (4) weeks from Ovivo’s initial submittal date. Ovivo intends to ship the first mechanisms twenty-eight (28) weeks after receipt of approved submittals from Purchaser.

This budget proposal includes the delivery of all mechanisms onsite at once. Storage of mechanisms onsite before installation shall be organized by the installing contractor.

Appendix B

Walker Process Budgetary Estimate

Moulton, James

To: Brown, Casie (P.E.)

Subject: RE: Orlando FL Iron Bridge WWTP - Clarifier budget pricing updated 22-S-148 4/5/2023

From: Chris Harston <charston@walker-process.com> Sent: Wednesday, April 5, 2023 5:24 PM To: 'Bob Bierhorst' <bbierhorst@mts-florida.com> Subject: RE: Orlando FL Iron Bridge WWTP - Clarifier budget pricing updated 22-S-148 4/5/2023

Bob, There is a small savings for (4) units vs. (2) units:

For four (4) pier supported spiral flight collector mechanisms for installation by others in existing 100’ dia.

concrete tanks, HDG construction, including pier, drive assembly, LA-EDI well, influent well, spiral flight sludge collection, two (2) full radius skimmers and one (1) full radius scum trough, mechanical startup service, and delivery to Orlando FL, use a budget price of $1,300,000 ± 10% total for four units.

For new walkway and platform structure, flooring, and handrail for the collectors above, add $100,000 total for the carbon steel mechanisms above.

For four (4) pier supported spiral flight collector mechanisms for installation by others in existing 100’ dia.

concrete tanks, stainless steel construction, including pier, drive assembly, LA-EDI well, influent well, spiral flight sludge collection, two (2) full radius skimmers and one (1) full radius scum trough, mechanical startup service, and delivery to Orlando FL, use a budget price of $2,200,000 ± 10% total for four units in 304 stainless steel or $2,440,000 ± 10% total for four units in 316 stainless steel .

For new walkway and platform structure, flooring, and handrail, add $180,000 total for the stainless steel mechanisms above.

Excluded are electrical controls, FRP weir and baffle, scum spray system, piping, etc.

Note that I took new bridge & platform out of the base and made them adders.

Let me know if there are questions or comments.

Thanks, Chris

Chris Harston, P.E. | Regional Sales Manager | Walker Process Equipment, Division of McNish Corporation Office 630-264-5208 | Mobile 815-274-9483 | charston@walker-process.com

Appendix C

WesTech Budgetary Estimate

Iron Bridge WRF Orlando, Florida

Engineer CPH Engineers

Representative Cameron Young Moss Kelley, Inc.

Lake Mary, Florida

(407) 805-0063 cjy@mosskelley.com

Contact Mitch Matthews mmatthews@westech-inc.com

Matt Pearson mpearson@westech-inc.com

Proposal Number: 2360107 Thursday, April 13, 2023

Proposal: 2360107_Rev1 2

Table of Contents Technical Proposal

Item A – Clarifier Mechanisms Model COPC1G

Clarifications and Exceptions

Commercial Proposal

Bidder’s Contact Information Pricing Payment Terms Schedule Freight

Warranty

Terms & Conditions

Proposal: 2360107_Rev1 3

Technical Proposal Item A – Clarifier Mechanisms Model COPC1G

General Scope of Supply Item Unit Value/Description Number of Mechanisms Each See Pricing Table Application - Activated Sludge Secondary Tank Diameter ft 100 Tank Side Wall Depth ft 15.5 Tank Side Water Depth ft 14 Tank Bottom Slope - 1:12 Average Flow Rate MGD 3.61** Peak Flow Rate MGD 9.02** Influent MLSS Concentration mg/L 3000** SVI mL/g 130**

**Assumed Values

Detailed Scope of Supply - Each Mechanism Includes the Following Item Qty Size/Description Material Center Column 1 40" dia. x 0.25" thick See Pricing Table Center Cage 1 4' Square See Pricing Table LA EDI 1 11' dia. x 2.5' deep x 0.1875" plate See Pricing Table Feedwell 1 24' dia. x 6' deep x 0.1875" plate See Pricing Table Full Radius Rake Arms 2 Box Truss w/ Spiral Scrapers See Pricing Table Sludge Withdrawal Ring 1 20% Tank Diameter w/ Evenly Spaced

Ports See Pricing Table

Skimmer Blade & Supports 2 Extends from feedwell to hinged skimmer See Pricing Table Full Radius Skimmer 2 With neoprene skimmer See Pricing Table

/Neoprene Scum Box & Supports 1 Full Radius Scum Box See Pricing Table Scum Flushing Valve 1 Skimmer Actuated Polymer/SS Electrical Control Panel 1 NEMA 4X 304 SS Drive Unit 1 See Drive Unit Table for description Anchor Bolts & Fasteners - - 316 SS

Proposal: 2360107_Rev1 4

Drive Unit Description Unit Value/Description Drive Type C42 Cage Drive w/ Precision Bearing Housing Material - Fabricated Steel Continuous Rated Torque ft∙lbs 35,750 Momentary Peak Torque ft∙lbs 71,500 Rake Tip Speed ft/min 12.8 Motor Size HP 1 Motor Voltage/Frequency/Phase V / Hz / Phase 460 / 60 / 3 Torque Control Settings Alarm: ft∙lbs 100%: 35,750 Motor Cutout: ft∙lbs 120%: 42,900 Main Gear and Pinion Lubrication - Oil Main Bearing and Reducer Lubrication - Grease

Surface Preparation and Coating

Application Surfaces

Surface Preparation

Finish

Stainless Steel

Cleaning Grade “C”

See Below for Details

2-Coat Steel

SSPC-SP10

Submerged

SSPC-SP6

Non- Submerged

Submerged Two (2) Coats Tnemec N140 Epoxy, 4-6 mils DFT Non-Submerged One (1) coat Tnemec N140 Epoxy, 4-6 mils DFT, and one

(1) coat Tnemec 1074U-B5712 Polyurethane, 3-5 mils DFT

HDG Steel SSPC-SP8 Hot-Dip Galvanized Drive Unit SSPC-SP6 One (1) coat Tnemec N140F-1255 Epoxy, 4-6 mils DFT, and one (1) coat

Tnemec 1074U-B5712 Polyurethane, 3-5 mils DFT

Stainless Steel Finish

Proposal: 2360107_Rev1 5

Approximate Weights Item Weight Unit Center Column 2500 lbs Center Cage, Rake Arms, Spiral Rake Blades, Sludge Withdrawal Ring 9800 lbs Dual Gate EDI, Feedwell, Feedwell Supports 8350 lbs Standard Skimmer, Scum Box & Supports 3100 lbs Bridge & Platform 3350 lbs Drive Unit 4000 lbs Heaviest Single Item (Drive Unit) 4000 lbs

Additional Services and Equipment

WesTech has included on-site technical assistance for inspection, observation of torque testing, startup, and instruction of plant personnel. Additional on-site services may be purchased at standard WesTech daily rates plus travel and living expenses.

On-Site Technical Service Item Quantity Total Number of Trips 8 Total Number of Days 8

Items Not Included in WesTech’s Base Scope of Supply (unless specifically noted)

• Concrete/Grout

• Concrete and Anchor Reinforcement

• Conduits and Wiring

• Erection or Assembly

• Lubricants

• Piping, Valves, or Fittings

• Unloading or Storage

• Bridge and Platform

Optional Items Equipment Options

No. Item Description Material A-1 FRP Weirs And Baffles 9” Weirs v-notch weirs, 12: Scum

Baffles

FRP

A-2 Bridge/Platform Adder Item Qty Size/Description Material Walkway Bridge See Pricing

Table 36” wide Truss Bridge See Pricing Table

Walkway Handrail - Truss Serves as Handrail Component See Pricing Table Walkway Flooring - 1.25” Grating Aluminum Drive Platform See Pricing

Table 24” Minimum Drive Clearance See Pricing Table

Platform Handrail - 2 Rail Component Handrail, Pop Rivet Aluminum Platform Flooring - 0.25” Checker Plate Aluminum

Proposal: 2360107_Rev1 6

Clarifications and Exceptions General Clarifications Terms & Conditions: This proposal, including all terms and conditions contained herein, shall become part of any resulting contract or purchase order. Changes to any terms and conditions, including but not limited to submittal and shipment days, payment terms, and escalation clause shall be negotiated at order placement, otherwise the proposal terms and conditions contained herein shall apply.

Paint: If your equipment has paint included in the price, please take note to the following. Primer paints are designed to provide only a minimal protection from the time of application (usually for a period not to exceed 30 days). Therefore, it is imperative that the finish coat be applied within 30 days of shipment on all shop primed surfaces. Without the protection of the final coatings, primer degradation may occur after this period, which in turn may require renewed surface preparation and coating. If it is impractical or impossible to coat primed surfaces within the suggested time frame, WesTech strongly recommends the supply of bare metal, with surface preparation and coating performed in the field. All field surface preparation, field paint, touch-up, and repair to shop painted surfaces are not by WesTech.

Escalation: If between the proposal date and actual procurement and through no fault of the Seller, the relevant cost of labor, material, freight, tariffs, and other Seller costs combined relating to the contract, increase by greater than 2.5% of the overall contract price, then the contract price shall be subject to escalation and increased. Such increase shall be verified by documentation and the amount of contract price escalation shall be calculated as either the actual increased cost to the Seller or, if agreed by the Parties, the equivalent increase of a relevant industry recognized third-party index, and in both cases without any additional profit or margin being added.

USA Tariffs and Current Trade Laws: All prices are based on current USA and North America tariffs and trade laws/agreements at time of bid. Any changes in costs due to USA Tariffs and trade laws/ agreements will be passed through to the purchaser at cost.

The Infrastructure Investment and Jobs Act of 2021 (IIJA) includes potentially significant changes to historical “Buy American” or “American Iron and Steel” (AIS) requirements for federally funded projects, including water-related infrastructure projects as administered by the Environmental Protection Agency (EPA). The IIJA was signed into law on Nov 15, 2021. However the EPA has yet to issue additional information and guidance clarifying the application and interpretation of these changes. Although WesTech makes every effort to source the steel for our equipment and products domestically, not everything is reasonably or commercially available to meet all project specific constraints. Consequently, any proposal or offer for sale by WesTech, including any resulting equipment order, does not guarantee compliance with the Buy American provisions of the Infrastructure Investment and Jobs Act of 2021 at this time.

Comments

Hot Dipped Galvanizing is a sacrificial coating and the coating life is unique to the application environment. Avoid extreme changes in pH and chlorides such as ferric chloride as a flocculant.

Proposal: 2360107_Rev1 7

Commercial Proposal Proposal Name: Iron Bridge WRF Proposal Number: 2360107 Thursday, April 13, 2023

1. Bidder's Contact Information Company Name WesTech Engineering, LLC Primary Contact Name Mitch Matthews Phone (801) 265-1000 Email mmatthews@westech-inc.com Address: Number/Street 3665 S West Temple Address: City, State, Zip Salt Lake City, UT 84115

2. Budget Pricing Currency: USD Scope of Supply

A Clarifier Mechanisms Model COPC1G Quantity HDG Steel 2-Coat Steel 304 SS 316 SS 1 $470,000 $480,000 $770,000 $920,000 4 $1,520,000 $1,620,000 $2,770,000 $3,310,000 8 $2,940,000 $3,140,000 $5,430,000 $6,520,000 A-1 FRP Weirs and Baffles Quantity FRP 1 $40,000 4 $150,000 8 $290,000 A-2 Bridge Adder Quantity HDG Steel 2-Coat Steel 304 SS 316 SS 1 $20,000 $30,000 $60,000 $70,000 4 $140,000 $140,000 $230,000 $270,000 8 $180,000 $300,000 $470,000 $550,000 Taxes (sales, use, VAT, IVA, IGV, duties, import fees, etc.) Not Included Prices are valid for a period not to exceed 30 days from date of proposal.

Additional Field Service Daily Rate (Applicable Only to Field Service Not Included in Scope) $1,200 Pricing does not include field service unless noted in scope of supply, but is available at the daily rate plus expenses. The greater of a two week notice or visa procurement time is required prior to departure date. Our field service policy can be provided upon request for more details.

3. Payment Terms Purchase Order Acceptance and Contract Execution 10% Submittals Provided by WesTech 15% Release for Fabrication 35% Notification of Ready to Ship 40% All payments are net 30 days. Partial shipments are allowed. An approved Letter of Credit is required if Incoterms CIF, CFR, DAP, CIP, or CPT are applicable. Payment is required in full for all other Incoterms prior to international shipment. Other terms per WesTech proforma invoice. Please note that the advising bank must be named as: Wells Fargo Bank, International Department, 9000 Flair Drive, 3rd Floor, El Monte, California 91731, USA.

Proposal: 2360107_Rev1 8

4. Schedule Submittals, after Purchase Order Acceptance and Contract Execution 9 to 11 weeks Ready to Ship, after Receipt of Final Submittal Approval 24 to 26 weeks Estimated Weeks to Ready to Ship 33 to 37 weeks* *Customer submittal approval is typically required to proceed with equipment fabrication and is not accounted for in the schedule above. Project schedule will be extended to account for time associated with receipt of customer submittal approval.

5. Freight Domestic FOB Shipping Point - Full Freight Allowed to Jobsite (FSP-FFA) From Final Destination Number of Trucks or Containers WesTech Shops Orlando, FL TBD

Proposal: 2360107_Rev1 9

One-Year Warranty WesTech is meeting a global need for clean water through technology treatment solutions. We are proud that the equipment and systems we design, build, maintain, and operate are making the world a better place and creating a more sustainable environment for future generations.

Equipment manufactured or sold by WesTech Engineering, LLC, once paid for in full, is backed by the following warranty:

Subject to the terms below, WesTech warrants all new equipment manufactured or sold by WesTech Engineering, LLC to be unencumbered and free from defects in material and workmanship, and WesTech will replace or repair, F.O.B. its factories or other location it chooses, any part or parts returned to WesTech which WesTech’s examination and analysis determine have failed within the warranty period because of defects in material and workmanship. The warranty period is either, one calendar year immediately following start-up, or eighteen (18) months from when WesTech sent its ready-to-ship notification to the purchaser, whichever expires sooner. All repair or replacement parts qualifying under this warranty shall be free of charge. Purchaser will provide timely written notice to WesTech of any defects it believes should be repaired or replaced under this warranty.

WesTech will reject as untimely any warranty defect claim that purchaser submits more than thirty

(30) days after the possible warranty defect first occurred. Unless specifically stated otherwise, this warranty does not cover normal wear or consumables. This warranty is not transferable.

This warranty shall be void and shall not apply where the equipment or any part thereof

a) has been dismantled, modified, repaired or connected to other equipment, outside of a WesTech factory, or without WesTech’s written approval, or

b) has not been installed in complete adherence to all WesTech’s or parts manufacturer’s requirements, recommendations, and procedures, or

c) has been subject to misuse, abuse, neglect, or accident, or has not at all times been operated and maintained in strict compliance with all of WesTech’s requirements and recommendations therefor, including, but not limited to, the relevant WesTech Operations & Maintenance Manual and any other of WesTech’s specified guidelines & procedures, or

d) has been subject to force majeure events; use of chemicals not approved in writing by WesTech;

electrical surges; overloading; significant power, water or feed supply fluctuations; or non-compliance with agreed feedwater or chemical volumes, specifications or procedures.

In any case where a part or component of equipment under this warranty is or may be faulty and the component or part is also covered under the warranty of a third party then the purchaser shall provide reasonable assistance to first pursue a claim under the third party warranty before making a claim under this warranty from WesTech. WesTech Engineering, LLC gives no warranty with respect to parts, accessories, or components purchased other than through WesTech. The warranties which apply to such items are those offered by the respective manufacturers.

Proposal: 2360107_Rev1 10

This warranty is expressly given by WesTech and accepted by purchaser in lieu of all other warranties whether written, oral, express, implied, statutory or otherwise, including without limitation, warranties of merchantability and fitness for particular purpose. WesTech neither accepts nor authorizes any other person to assume for it any other liability with respect to its equipment. WesTech shall not be liable for normal wear and tear, corrosion, or any contingent, incidental, or consequential damage or expense due to partial or complete inoperability of its equipment for any reason whatsoever. The purchaser’s exclusive and only remedy for breach of this warranty shall be the repair and or replacement of the defective part or parts within a reasonable time of WesTech’s accepting the validity of a warranty claim made by the purchaser.

Proposal: 2360107_Rev1 11

Terms & Conditions Terms and Conditions appearing in any order based on this proposal which are inconsistent herewith shall not be binding on WesTech Engineering, LLC The sale and purchase of equipment described herein shall be governed exclusively by the foregoing proposal and the following provisions:

1. SPECIFICATIONS: WesTech Engineering, LLC is furnishing its standard equipment as outlined in the proposal and as will be covered by final approved drawings. The equipment may not be in strict compliance with the Engineer’s/Owner’s plans, specifications, or addenda as there may be deviations. The equipment will, however, meet the general intention of the mechanical specifications of these documents.

2. ITEMS INCLUDED: This proposal includes only the equipment specified herein and does not include erection, installation, accessories, nor associated materials such as controls, piping, etc., unless specifically listed.

3. PARTIES TO CONTRACT: WesTech Engineering, LLC is not a party to or bound by the terms of any contract between WesTech Engineering, LLC’s customer and any other party. WesTech Engineering, LLC’s undertakings are limited to those defined in the contract between WesTech Engineering, LLC and its direct customers.

4. PRICE AND DELIVERY: All selling prices quoted are subject to change without notice after 30 days from the date of this proposal unless specified otherwise. Unless otherwise stated, all prices are F.O.B. WesTech Engineering, LLC or its supplier’s shipping points. All claims for damage, delay or shortage arising from such equipment shall be made by Purchaser directly against the carrier. When shipments are quoted F.O.B. job site or other designation, Purchaser shall inspect the equipment shipped, notifying WesTech Engineering, LLC of any damage or shortage within forty-eight hours of receipt, and failure to so notify WesTech Engineering, LLC shall constitute acceptance by Purchaser, relieving WesTech Engineering, LLC of any liability for shipping damages or shortages.

5. PAYMENTS: All invoices are net 30 days. Delinquencies are subject to a

1.5 percent service charge per month or the maximum permitted by law, whichever is less on all past due accounts. Pro rata payments are due as shipments are made. If shipments are delayed by the Purchaser, invoices shall be sent on the date when WesTech Engineering, LLC is prepared to make shipment and payment shall become due under standard invoicing terms. If the work to be performed hereunder is delayed by the Purchaser, payments shall be based on the purchase price and percentage of completion. Products held for the Purchaser shall be at the risk and expense of the Purchaser. Unless specifically stated otherwise, prices quoted are for equipment only. These terms are independent of and not contingent upon the time and manner in which the Purchaser receives payment from the owner.

6. PAYMENT TERMS: Credit is subject to acceptance by WesTech Engineering, LLC’s Credit Department. If the financial condition of the Purchaser at any time is such as to give WesTech Engineering, LLC, in its judgment, doubt concerning the Purchaser’s ability to pay, WesTech Engineering, LLC may require full or partial payment in advance or may suspend any further deliveries or continuance of the work to be performed by the WesTech Engineering, LLC until such payment has been received.

7. ESCALATION: If between the proposal date and actual procurement and through no fault of the Seller, the relevant cost of labor, material, freight, tariffs, and other Seller costs combined relating to the contract, increase by greater than 2.5% of the overall contract price, then the contract price shall be subject to escalation and increased. Such increase shall be verified by documentation and the amount of contract price escalation shall be calculated as either the actual increased cost to the Seller or, if agreed by the Parties, the equivalent increase of a relevant industry recognized third-party index, and in both cases without any additional profit or margin being added.

8. APPROVAL: If approval of equipment submittals by Purchaser or others is required, a condition precedent to WesTech Engineering, LLC supplying any equipment shall be such complete approval.

9. INSTALLATION SUPERVISION: Prices quoted for equipment do not include installation supervision. WesTech Engineering, LLC recommends and will, upon request, make available, at WesTech Engineering, LLC’s then current rate, an experienced installation supervisor to act as the Purchaser’s employee and agent to supervise installation of the equipment. Purchaser shall at its sole expense furnish all necessary labor equipment, and materials needed for installation.

Responsibility for proper operation of equipment, if not installed by WesTech Engineering, LLC or installed in accordance with WesTech Engineering, LLC’s instructions, and inspected and accepted in writing by WesTech Engineering, LLC, rests entirely with Purchaser; and any work performed by WesTech Engineering, LLC personnel in making adjustment or changes must be paid for at WesTech Engineering, LLC’s then current per diem rates plus living and traveling expenses.

WesTech Engineering, LLC will supply the safety devices described in this proposal or shown in WesTech Engineering, LLC’s drawings furnished as part of this order but excepting these, WesTech Engineering, LLC shall not be required to supply or install any safety devices whether required by law or otherwise. The Purchaser hereby agrees to indemnify and hold harmless WesTech Engineering, LLC from any claims or losses arising due to alleged or actual insufficiency or inadequacy of the safety devices offered or supplied hereunder, whether specified by WesTech Engineering, LLC or Purchaser, and from any damage resulting from the use of the equipment supplied hereunder.

10. ACCEPTANCE OF PRODUCTS: Products will be deemed accepted without any claim by Purchaser unless written notice of non-acceptance is received by WesTech Engineering, LLC within 30 days of delivery if shipped F.O.B. point of shipment, or 48 hours of delivery if shipped F.O.B. point of destination. Such written notice shall not be considered received by WesTech Engineering, LLC unless it is accompanied by all freight bills for said shipment, with Purchaser’s notations as to damages, shortages and conditions of equipment, containers, and seals. Non-accepted products are subject to the return policy stated below.

11. TAXES: Any federal, state, or local sales, use or other taxes applicable to this transaction, unless specifically included in the price, shall be for Purchaser’s account.

12. TITLE: The equipment specified herein, and any replacements or substitutes therefore shall, regardless of the manner in which affixed to or used in connection with realty, remain the sole and personal property of WesTech Engineering, LLC until the full purchase price has been paid.

Purchaser agrees to do all things necessary to protect and maintain WesTech Engineering, LLC’s title and interest in and to such equipment;

and upon Purchaser’s default, WesTech Engineering, LLC may retain as liquidated damages any and all partial payments made and shall be free to enter the premises where such equipment is located and remove the same as its property without prejudice to any further claims on account of damages or loss which WesTech Engineering, LLC may suffer from any cause.

13. INSURANCE: From date of shipment until the invoice is paid in full, Purchaser agrees to provide and maintain at its expense, but for WesTech Engineering, LLC’s benefit, adequate insurance including, but not limited

Proposal: 2360107_Rev1 12 to, builders risk insurance on the equipment against any loss of any nature whatsoever.

14. SHIPMENTS: Any shipment of delivery dates recited represent WesTech Engineering, LLC’s best estimate but no liability, direct or indirect, is assumed by WesTech Engineering, LLC for failure to ship or deliver on such dates.

WesTech Engineering, LLC shall have the right to make partial shipments;

and invoices covering the same shall be due and payable by Purchaser in accordance with the payment terms thereof. If Purchaser defaults in any payment when due hereunder, WesTech Engineering, LLC may, without incurring any liability therefore to Purchaser or Purchaser’s customers, declare all payments immediately due and payable with maximum legal interest thereon from due date of said payment, and at its option, stop all further work and shipments until all past due payments have been made, and/or require that any further deliveries be paid for prior to shipment.

If Purchaser requests postponements of shipments, the purchase price shall be due and payable upon notice from WesTech Engineering, LLC that the equipment is ready for shipment; and thereafter any storage or other charge WesTech Engineering, LLC incurs on account of the equipment shall be for the Purchaser’s account.

If delivery is specified at a point other than WesTech Engineering, LLC or its supplier’s shipping points, and delivery is postponed or prevented by strike, accident, embargo, or other cause beyond WesTech Engineering, LLC’s reasonable control and occurring at a location other than WesTech Engineering, LLC or its supplier’s shipping points, WesTech Engineering, LLC assumes no liability in delivery delay. If Purchaser refuses such delivery, WesTech Engineering, LLC may store the equipment at Purchaser’s expense. For all purposes of this agreement such tender of delivery or storage shall constitute delivery.

15. WARRANTY: WesTech Engineering LLC warrants equipment it supplies only in accordance with the attached WesTech Warranty. This warranty is expressly given by WesTech and accepted by purchaser in lieu of all other warranties whether written, oral, express, implied, statutory or otherwise, including without limitation, warranties of merchantability and fitness for particular purpose. WesTech neither accepts nor authorizes any other person to assume for it any other liability with respect to its equipment. WesTech shall not be liable for normal wear and tear, corrosion, or any contingent, incidental, or consequential damage or expense due to partial or complete inoperability of its equipment for any reason whatsoever. The purchaser’s exclusive and only remedy for breach of this warranty shall be the repair and or replacement of the defective part or parts within a reasonable time of WesTech’s accepting the validity of a warranty claim made by the purchaser.

16. PATENTS: WesTech Engineering, LLC agrees that it will, at its own expense, defend all suits or proceedings instituted against Purchaser and pay any award of damages assessed against it in such suits or proceedings, so far as the same are based on any claim that the said equipment or any part thereof constitutes an infringement of any apparatus patent of the United States issued at the date of this Agreement, provided WesTech Engineering, LLC is given prompt notice in writing of the institution or threatened institution of any suit or proceeding and is given full control of the defense, settlement, or compromise of any such action; and Purchaser agrees to give WesTech Engineering, LLC needed information, assistance, and authority to enable WesTech Engineering, LLC so to do. In the event said equipment is held or conceded to infringe such a patent, WesTech Engineering, LLC shall have the right at its sole option and expense to a) modify the equipment to be non-infringing, b) obtain for Purchaser the license to continue using said equipment, or c) accept return of the equipment and refund to the Purchaser the purchase price thereof less a reasonable charge for the use thereof. WesTech Engineering, LLC will reimburse Purchaser for actual out-of-pocket expenses, exclusive of legal fees, incurred in preparing such information and rendering such assistance at WesTech Engineering, LLC’s request. The foregoing states the entire liability of WesTech Engineering, LLC, with respect to patent infringement;

and except as otherwise agreed to in writing, WesTech Engineering, LLC assumes no responsibility for process patent infringement.

17. SURFACE PREPARATION AND PAINTING: If furnished, shop primer paint is intended to serve only as minimal protective finish. WesTech Engineering, LLC will not be responsible for the condition of primed or finish painted surfaces after equipment leaves its shops. Purchasers are invited to inspect paint in shops for proper preparation and application prior to shipment. WesTech Engineering, LLC assumes no responsibility for field surface preparation or touch-up of shipping damage to paint. Painting of fasteners and other touch-up to painted surfaces will be by Purchaser’s painting contractor after mechanism installation.

Motors, gear motors, and other components not manufactured by WesTech Engineering, LLC will be painted with that manufacturer’s standard paint system. It is WesTech Engineering, LLC’s intention to ship major steel components as soon as fabricated, often before drive, motors, and other manufactured components. Unless Purchaser can ensure that shop primed steel shall be field painted within thirty (30) days after arrival at the job site, WesTech Engineering, LLC encourages the Purchaser to order these components without primer.

WesTech Engineering, LLC’s prices are based on paints and surface preparations as outlined in the main body of this proposal. In the event that an alternate paint system is selected, WesTech Engineering, LLC requests that Purchaser’s order advise of the paint selection. WesTech Engineering, LLC will then either adjust the price as may be necessary to comply or ship the material unpainted if compliance is not possible due to application problems or environmental controls.

18. CANCELLATION, SUSPENSION, OR DELAY: After acceptance by WesTech Engineering, LLC, this proposal, or Purchaser’s order based on this proposal, shall be a firm agreement and is not subject to cancellation, suspension, or delay except upon payment by Purchaser of appropriate charges which shall include all costs incurred by WesTech Engineering, LLC to date of cancellation, suspension, or delay plus a reasonable profit.

Additionally, all charges related to storage and/or resumption of work, at WesTech Engineering, LLC’s plant or elsewhere, shall be for Purchaser’s sole account; and all risks incidental to storage shall be assumed by Purchaser.

19. FORCE MAJEURE: Neither party hereto shall be liable to the other for default or delay in delivery caused by extreme weather or other act of God, strike or other labor shortage or disturbance, fire, accident, war or civil disturbance, act of government, pandemic, delay of carriers, failure of normal sources of supply, complete or partial shutdown of plant by reason of inability to attain sufficient raw materials or power, and/or other similar contingency beyond the reasonable control of the respective parties. The time for delivery specified herein shall be extended during the continuance of such conditions, or any other cause beyond such party’s reasonable control. Escalation resulting from a Force Majeure event shall be equitably adjusted per the escalation policy stated above.

20. RETURN OF PRODUCTS: No products may be returned to WesTech Engineering, LLC without WesTech Engineering, LLC’s prior written permission. Said permission may be withheld by WesTech Engineering, LLC at its sole discretion.

21. BACKCHARGES: WesTech Engineering LLC will not approve or accept backcharges for labor, materials, or other costs incurred by Purchaser or others in modification, adjustment, service, or repair of WesTech Engineering LLC furnished materials unless such back charge has been authorized in advance in writing by a WesTech Engineering LLC purchase order, or work requisition signed by WesTech Engineering LLC.

Proposal: 2360107_Rev1 13

22. INDEMNIFICATION: Purchaser agrees to indemnify WesTech Engineering, LLC from all costs incurred, including but not limited to court costs and reasonable attorney fees, from enforcing any provisions of this contract, including but not limited to breach of contract or costs incurred in collecting monies owed on this contract.

23. ENTIRE AGREEMENT: This proposal expresses the entire agreement between the parties hereto superseding any prior understandings and is not subject to modification except by a writing signed by an authorized officer of each party.

24. MOTORS AND MOTOR DRIVES: In order to avoid shipment delays of WesTech Engineering, LLC equipment, the motor drives may be sent directly to the job site for installation by the equipment installer. Minor fit-up may be required.

25. EXTENDED STORAGE: Extended storage instructions will be part of information provided to shipment. If equipment installation and start-up is delayed more than 30 days, the provisions of the storage instructions must be followed to keep WARRANTY in force.

26. LIABILITY: Professional liability insurance, including but not limited to, errors and omissions insurance, is not included. In any event, liability for errors and omissions shall be limited to the lesser of $100,000 USD or the value of the particular piece of equipment (not the value of the entire order) supplied by WesTech Engineering LLC against which a claim is sought.

27. ARBITRATION NEGOTIATION: Any controversy or claim arising out of or relating to the performance of any contract resulting from this proposal or contract issued, or the breach thereof, shall be settled by arbitration in accordance with the Construction Industry Arbitration Rules of the American Arbitration Association, and judgment upon the award rendered by the arbitrator(s) may be entered to any court having jurisdiction.

ACCEPTED BY PURCHASER

Customer Name:

Customer Address:

Contact Name:

Contact Phone:

Contact Email:

Signature:

Printed Name:

Title:

Date: