AET Technical Proposal.pdf

TABLE OF CONTENTS

For

Project

Harrisonburg, VA

PLATE SETTLER IMPROVEMENT PROJECT

TABLE OF CONTENTS

CHAPTER 1 .......................................................................... CUSTOMER REQUIREMENTS FOR SUBMITTAL

CHAPTER 2 ..................................................................................... AET TUBE SETTLER SYSTEM BROCHURE

CHAPTER 3 ......................................................... AET SCOPE OF SUPPLY PLATE SETTLERS (2025-0194)

CHAPTER 4 ......................................... AET SCOPE OF SUPPLY CHAIN&FLIGHT SCRAPER (2025-0225)

CHAPTER 5 ......................................................................... TECHNICAL SPECIFICATION – PLATE SETTLER

CHAPTER 6 ..................................................... TECHNICAL SPECIFICATION – CHAIN & FLIGHT SCRAPER

CHAPTER 7 ........................................................................................................... GENERAL LAYOUT DRAWING

CHAPTER 8 ......................... SURFACE LOADING RATE CALCULATION AS PER 12VAC9-590-872 M

CHAPTER 9 ............................................................................................ STRUCTURAL DESIGN CALCULATION

CHAPTER 10 ..................................................................... AET WARRANTY FOR MATERIAL DEFECTS

Aqua Equip Technologies LLC

8887 W Monroe Rd., Houston, TX 77061

2026-0194

July 6th, 2026

Karl Schmitz info@aqua-equip.com

727 238 2504

SUPPORT STRUCTURE

ESTRUCTURA DE SOPORTE

LAMELLA MODULES

LAMELLA MODULARES

EFFLUENT LAUNDER

VERTEDERO DE EFLUENTE

SPECIAL SOLUTIONS

SOLUCIÓN ESPECIAL

LAMELLA CLARIFIER

CLARIFICADOR LAMELLA

AQUA EQUIP TECHNOLOGIES

Tube settler systems

TUBE SETTLERS FOR

SEDIMENTATION TANKS

DECANTADORES DE TUBO PARA

TANQUES DE SEDIMENTACIÓN

Inclined tube settlers are a state of the art technology in water and wastewater treatment. The technology is used in a vast variety of sedimentation processes.

REDUCED TANK SIZE

Settling tanks fitted with HEWiTUBE lamella settlers are significantly smaller when compared to conventional settling tanks considering the same performance parameters.

PROVEN TECHNOLOGY

The operating principle of lamella settlers is based on a reduced particle settling path. The related laws of sedimentation have been defined by Allan Hazen in 1904.

NUMEROUS APPLICATIONS

HEWiTUBE lamellas are utilized in various applications such as potable water treatment, industrial-rapid-settling, primary and/or secondary settling in WWTPs, stormwater treatment and others.

Los decantadores de tubos inclinados son una tecnología de vanguardia en el tratamiento de agua y aguas residuales. La tecnología se utiliza en una amplia variedad de procesos de sedimentación.

TAMAÑO DE TANQUE REDUCIDO

Los tanques de sedimentación equipados con decantadores de láminas HEWiTUBE son significativamente más pequeños en comparación con los tanques de sedimentación convencionales considerando los mismos parámetros de rendimiento.

TECNOLOGÍA PROBADA

El principio de funcionamiento de los sedimentadores de láminas se basa en una ruta de sedimentación de partículas reducida.

Las leyes relacionadas de la sedimentación fueron definidas por Allan Hazen en 1904.

NUMEROSAS APLICACIONES

Las laminillas HEWiTUBE se utilizan en diversas aplicaciones tales como tratamiento de agua potable, sedimentación rápida industrial, sedimentación primaria y / o secundaria en EDAR, tratamiento de aguas pluviales y otras.

HAZENS LAW FOR SETTLING

The fundamental sedimentation laws were defined in 1904 by Allan Hazen.

The effective tank surface is the most important governing factor for settling performance.

This effective surface can be significantly increased with HEWiTUBE inclined settlers

LEY DE HAZENS PARA

ELRESTABLECIMIENTO

Las leyes fundamentales de sedimentación fueron definidas en 1904 por Allan Hazen.

La superficie efectiva del tanque es el factor determinante más importante para el rendimiento de la sedimentación.

Esta superficie efectiva se puede aumentar significativamente con decantadores inclinados HEWiTUBE.

FUNCTIONAL ZONES OF A LAMELLA TANK

ZONAS FUNCIONALES DE LOS TANQUES LAMELARES

Allan Hazen, later President of the New England Water Works Association defined the laws of Sedimentation in 1904.

Influent / Influente

Baffle wall / Pared de deflección

Influent zone / Zona de influente

Underflow section / Seccion de bajo flujo

Tube setller / Decantadores de tubo

Effluent launder / Vertedero de efluente

Collection trough / Canal de recogido

Sludge / Lodo

Sludge pump / Bomba de lodo

Lamella settlers are build in a variety of configurations.

Different functional zones can be identified in typical lamella settling tanks.

The Influent (1) flows into a buffer wall (2).

Energy gets dissipated in the inlet zone (3). From here the flow continues to the underflow section (4) where it is evenly distributed to the lamella tubes (5).

Particles collect on the lower lamella plane and collectively slide down due to the inclination.

Clarified water leaves the tube-settler on the upper side and is collected in a launder (6) that exits the tank wall and allows the clarified overflow to enter the collection channel (7).

The particle loaded sludge (8) collects on the tank floor and moves towards the sludge pump (9) with the help of a scraper system.

Los decantadores de láminas se construyen en una variedad de configuraciones. Se pueden identificar diferentes zonas funcionales en tanques de decantación de láminas típicas.

El Influente (1) fluye hacia una pared de amortiguación (2).

La energía se disipa en la zona de entrada (3). Desde aquí, el flujo continúa hasta la sección de flujo inferior (4) donde se distribuye uniformemente a los tubos lamelares (5).

Las partículas se acumulan en el plano de laminillas inferior y se deslizan colectivamente hacia abajo debido a la inclinación.

El agua clarificada sale del decantador de tubos por el lado superior y se recoge en un lavadero (6) que sale de la pared del tanque y permite que el desbordamiento clarificado ingrese al canal de recolección (7).

El lodo cargado de partículas (8) se acumula en el fondo del tanque y se mueve hacia la bomba de lodo (9) con la ayuda de un sistema raspador.

EQUIDISTANT CHEVRON SHAPE

FORMA DE CHEVRÓN EQUIDISTANTE

HEWiTUBE LS50-APPLICATIONS Potable water treatment (blue series) Humus tanks Stormwater treatment

HEWiTUBE LS84-APPLICATIONS Municipal Primary settlers Secondary AS settling CSO treatment Voluminous sludge

HEWiTUBE LS50-APLICACIONES Tratamiento de agua potable (serie azul) Tanques de humus Tratamiento de aguas pluviales

HEWiTUBE LS84-APLICACIONES Decantadores primarios municipales Asentamiento secundario AS Tratamiento CSO Lodos voluminosos

The HEWiTUBE Lamella system consists of individual profiles joined using a tongue and groove system.

El sistema HEWiTUBE Lamella consta de perfiles individuales unidos mediante un sistema macho y hembra.

HEWiTUBE

SELF SUPPORTING WITH LONGLIVETY

The modules are rigid and self-supporting. Thanks to the polypropylene material the modules will last decades.

VARIABLE MODULE SIZES

HEWiTUBE modules can be produced in almost any size to suit individual project requirements.

AUTO APOYO CON LONGLIVEDAD

Los módulos son rígidos y auto soportantes. Gracias al material de polipropileno los módulos durarán décadas.

TAMAÑOS VARIABLES DE MÓDULO

Los módulos HEWiTUBE se pueden producir en casi cualquier tamaño para adaptarse a los requisitos de proyectos individuales.

OPTIMIZED SEPARATION

The settling performance follows Hazen‘s law due to the equidistant settling planes.The settled sludge moves to the chevron center line and allows the individual particles to slide down in a dense particle flow.

SEPARACIÓN OPTIMIZADA

El rendimiento de sedimentación sigue la ley de Hazen debido alos planos de sedimentación equidistantes. El lodo sedimentado se mueve hacia la línea central del chevrón y permite que las partículas individuales se deslicen hacia abajo en un flujo de partículas denso.

CERTIFIED FOR USE IN

POTABLE WATER

The HEWiTUBE blue series is certified in accordance with KTW/W270 (German standard) and NSF (US-standard).

CERTIFICADO PARA USO

EN AGUA POTABLE

La serie HEWiTUBE blue está certificada de acuerdo con KTW / W270 (estándar alemán) y NSF (estándar estadounidense).

HEWiTUBE TANK INTEGRATION HEWiTUBE TINTEGRACIÓN DEL TANQUE

ROUND TANK

TANQUES REDONDOS

SQUIRCLE TANK

TANQUE SQUIRCLE

RECTANGULAR TANK

DEPÓSITOS RECTANGULARES

HEWiTUBE modules can be integrated into a large variety of tank shapes.

INSTALLATION INTO RECTANGULAR TANKS

Most common is the integration into rectangular tanks. The tank surface can be used without restrictions.

INSTALLATION INTO ROUND TANKS

The performance of larger round tanks can be drastically increased using a ring section of HEWiTUBE modules along the perimeter.

SQUIRCLE TANK INTEGRATION

Squircle tanks are square-shaped tanks combined with a circular tank bottom. The modules can be installed in a similar configuration to rectangular tanks and combined with a vertical shaft scraper.

UNDERGROUND TANKS

This concept is most common in applications for stormwater treatment.

Los módulos HEWiTUBE se pueden integrar en una gran variedad de formas de tanque.

INSTALACIÓN EN DEPÓSITOS RECTANGULARES

Lo más común es la integración en tanques rectangulares.

La superficie del tanque se puede utilizar sin restricciones.

INSTALACIÓN EN TANQUES REDONDOS

El rendimiento de los tanques redondos más grandes se puede aumentar drásticamente utilizando una sección de anillo de módulos HEWiTUBE a lo largo del perímetro.

INTEGRACIÓN DE TANQUE SQUIRCLE

Los tanques Squircle son tanques de forma cuadrada combinados con un fondo de tanque circular. Los módulos pueden instalarse en una configuración similar a los tanques rectangulares y combinarse con un raspador de eje vertical.

DEPÓSITOS SUBTERRÁNEOS

Este concepto es más común en aplicaciones para el tratamiento de aguas pluviales.

APPLICATION ENGINEERING

INGENIERÍA DE APLICACIONES

SUPPORT STRUCTURE

Project: Your projectProject #: xxxxRevision 0 Date 03.07.2020

HEWiTUBE e uent launder design Customer your comany

GENERAL / ALLGEMEINES

Total Flow rate / Ablaufmenge m³/h

Nos of Tanks / Anzahl der Becken

Nos of Launders per Tank / Rinnen pro Becken

Flow per Launder / Ablaufmenge pro Rinne

230,4 m³/h0,064 m³/sec

LAUNDER CONFIGRUATION / RINNENGEOMETRIELaunder Length / Rinnenlänge

31,00 m

Launder Width / Rinnenbreite

0,40 m

Launder height / Rinnenhöhe

0,40 m

Max ow height / max Stauhöhe

0,34 m

Free board / Freibord

0,06 m

Outlet- ow height / Auslaufhöhe

0,15 m note: The outlet ow height is calculated for a free outfall / Hinweis: Die Auslaufhöhe gilt nur bei freiem Überfall

Outlet ow velovity / Geschwindigkeit am Auslauf 1,06 m/s

Weir con guation / Überlaufwehr Weir Type /Wehrtyp both sides / zweiseitig

Con guartion / Kon guartion

Typ A

Weir load / Wehrkantenbelastung

3,716 m3/m/h

Over ow Height / Überfallhöhe mm

0,00

0,05

0,10

0,15

0,20

0,25

0,30

0,35

0,40

0,45 de pt h / F lie ss tie fe

(m

Distance from outfall / Abstand zum Auslauf (m)

Flow depth in launder / Fliesstiefe in der Rinne (m)

Water (m)Launder…

H ei gh t /

H öh e (m m

Weir length excerp / Wehrausschnitt (mm)

Over ow before weir / Überfall am Wehr Weir Water

0,00

0,10

0,20

0,30

0,40

0,50

Launder Outfall (m)

Max Level (m)

Project: Your Project xxxx

Revision 0 Date 03.07.2020

HEWiTUBE hydraulic design Customer Your Company

GENERAL / ALLGEMEINES

Nature of water / Herkunft Potable water: FE- occulated

Nos of tanks / Anzahl Becken

Total Flow rate / Zulauf gesamt 1500,00 m3/h

Lamella settler / Schrägklärer HEWiTUBE LS-50

Inclination / Winkel 60 deg vertical proj. Surface / vert. Proj. Absetz 11,00 m2/m3

3,35 sq.ft/cu.ft

TANK CONFIGRUATION / BECKENGEOMETRIE

Tank length / Beckenlänge 12,00 m

Base length / Basislänge 11,42 m

Tank width / Beckenbreite 5,00 m

Module height / Modulhöhe 1,00 m

Settling plane / Absetz äche 628,25 m2

HYDRAULIC DESIGN ALL TANKS / HYDRAULISCHE AUSLEGUNG

tot. Settling plane / Gesamtober äche 2513 m2

Water rise rate / Aufstromgeschwindigkeit 7 m/h

2,686 GPM/FT2

Reynoldsnumber / Reynoldzahl

Hazen velocity / Ober ächenbeschickung 0,60 m/h

Aimed Hazen / Angestrebte Ober . Besch. 0,60 m/h

The Design Hazen velocity must be below aimed / qA(berechnet) muss < qA (ziel sein) Design OK! The design Hazen-velocity is below aim / Bemessung OK! qA(berechnet) ist kleiner qA (ziel)

The expected performance requires a uniform ow through the tubes / Es ist eine gleichmäßige Durchströmung aller

Röhren anzustreben

HYDRAULIC

CALCULATION

The design of HEWiTUBE lamellas requires hydraulic calculation to determine the required tank size and lamella volume.

AET provides a hydraulic design in accordance with the required Hazen-number and other product-specific features.

CÁLCULO

HIDRÁULICO

El diseño de las láminas HEWiTUBE requiere un cálculo hidráulico para determinar el tamaño del tanque requerido y el volumen de laminillas.

AET proporciona un diseño hidráulico de acuerdo con el número de Hazen requerido y otras características específicas del producto.

We offer project specific support structure components including beams, brackets and other required components made from stainless steel or FRP.

ESTRUCTURA DE SOPORTE

Ofrecemos componentes de estructura de soporte específicos para proyectos, incluidas vigas, soportes y otros componentes necesarios hechos de acero inoxidable o FRP.

OVERFLOW LAUNDER

VERTEDERO DE EFLUENTE

The design and arrangement of the effluent launders has an impact on the overall settler performance.

On request we offer a design study for effluent launders as either open flow with V-notch weirs or as a submerged collection pipe.

El diseño y la disposición de los lavadores de efluentes tienen un impacto en el desempeño general de los colonos.

A pedido, ofrecemos un estudio de diseño para lavadores de efluentes como flujo abierto con vertederos con muesca en V o como tubería de recolección sumergida.

HEAD OFFICE

2101 Starkey Rd, Largo, FL 33771, USA Telephone: +1 727 238 2504 Email: info@aqua-equip.com www.aqua-equip.com

REDUCED SHIPPING COST

ON SITE ASSEMBLY

MONTAJE IN SITU

HEWiTUBE Module

Inclined welding table / Mesa inclinada para soldar

Welding gun / Pistola de soldar

HEWiTUBE

For larger projects we deliver the flat-packed profiles directly to the project location.

The assembly of the HEWiTUBE modules can be done at the construction site using a welding table and welding gun.

The necessary tools and project specific assembly instructions are within our scope of supply.

COSTO DE ENVÍO REDUCIDO

Para proyectos más grandes, entregamos los perfiles empaquetados directamente a la ubicación del proyecto.

El montaje de los módulos HEWiTUBE se puede realizar en la obra mediante una mesa de soldadura y una pistola de soldadura. Las herramientas necesarias y las instrucciones de montaje específicas del proyecto están dentro de nuestro alcance de suministro.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 1 OF 11

Date: Nov 7th, 2025

Subject: AET LLC Scope of Supply #2025-0194 Harrisonburg WTP, VA – hybrid tube settler system

Dear Sir or Madam:

AET LLC is pleased to present the following scope of supply for a tube settler system regarding the Harrisonburg, VA WTP. Please refer to pages 2 through 5 of this proposal for details.

Proposal is based on the attached Terms and Conditions. If our proposal is otherwise acceptable, we will work with you to negotiate mutually acceptable Conditions of Sale for this project.

We trust this information is sufficient for your evaluation of our proposal. However, if you need additional information or to discuss this proposal further, please do not hesitate to contact me at 727 238 2504 or info@aqua-equip.com.

Sincerely, Karl-Uwe Schmitz

Karl-Uwe Schmitz Sales Agent and Engineering Consultant

Karl Schmitz Aqua Equip Technologies LLC

1302 Waugh Dr. #836

Houston, TX 77019

Telephone (727) 238 2504 info@aqua-equip.com www.aqua-equip.com

Alec Pagano Heyward Incorporated 10146 West Broad Street Glen Allen, VA 23060

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 2 OF 11

Scope of supply

Tube settler media modules with H = 2.5ft

AET LLC will provide hybrid tube settler blocks type LS50 (45 mm channel spacing) in Polypropylene material and optional in stainless steel 304. The offered tube settler amount is for 4 basins total each with dimensions of 40 x 27.41ft (L x W). The offered material is Polypropylene for drinking water applications according to ANSI/NSF 61.

The tube settlers are designed for a flowrate of 2,640gpm (3.80 MGD) per basin. This results in a loading rate of 0.4gpm/sft or less in lieu with VA state regulations.

The tube settler media module block sizes will be less than 4ft in length and 4ft in width to allow easy handling by hand. All blocks will be color marked to ensure an easy assembly.

Support and anti-floating beams

Both supporting and anti-floating beams are made of stainless steel 304 and FRP for use in drinking water. Channel beams will be installed in the width of the tank as main beams and supporting rectangular tube beams will be placed on top. To avoid floating of the lamella clarifier modules they will be fixed with channel beams on top of the tube settler blocks.

All required anchors, bolts etc. are included.

Effluent launders and troughs

Each basin includes 3 effluent troughs made from stainless steel 304. The troughs include adjustable V-notch weirs, support beams, wall brackets and hardware in stainless steel 316. Each trough is designed for a flowrate of 1.27MGD resulting in a total flowrate of 3.80MGD per basin.

AET will provide hydraulic calculations and a CFD simulation showing that all effluent water can be safely discharged from the basins.

Baffle wall

The scope of supply also includes baffle walls. Baffle walls will be made of stainless steel 304 and FRP structural plates. Baffle walls will guide the incoming water flow below the tube settler packs and are structurally designed to provide enough strength for launders and baffle wall weight.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 3 OF 11

Supervision, freight, and documentation

The scope of supply includes freight to the job site in Harrisonburg, VA. All equipment is packaged on pallets and can be unloaded with a forklift. Design calculations, drawings and standard O&M manuals are included. Supervision service is included for 1 trip with 3 days on site.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 4 OF 11

Product information

Figure 1: Tube settler LS50 and channel design

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 5 OF 11

Typical tube settler system setup:

27.41ft

40ft Supports for launders (Provided by AET)

Baffle wall (Provided by AET)

Effluent launders (Provided by AET)

Tube settler packs (Provided by AET)

Support system (Provided by AET)

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 6 OF 11

Selected references:

Loudon, TN WTP – 40 MGD plant

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 7 OF 11

WV, USA: 4 Basins each 5MGD – Drinking water application

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 8 OF 11

Pricing section

4 Basins – Harrisonburg, VA WTP

Tube settler media modules ................................................................................. Included

Support and Anti-floating beams .......................................................................... Included

Baffle walls ........................................................................................................... Included

Effluent launders .................................................................................................. Included

Freight to job site .................................................................................................. Included

Taxes .............................................................................................................. Not included

Total price – Tube settler system for 4 basins

Option 1: Adder for Stainless steel 304 tube settlers

Adder: SS304 instead of PP for tube settlers…………………………………..+

Please take note that the quoted price is excluding of any Federal and/or State and/or Municipal Sales, Use or Consumption Taxes. The Contract value and/or Invoices will be adjusted to include any Taxes that might be assessed as applicable.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 9 OF 11

PRICING NOTES / CLARIFICATIONS

Included in the Scope of Supply are:

Tube settler system as described on page 2 to 5 Freight to job site Support, Anti-floating structure Tube settler documentation incl. drawings, O&M manuals and AET design calculations 1 Year warranty on product defects as specified Supervision as specified

Not included in the Scope of Supply are:

All unloading, cutting or other field modifications Tube settler installation Performance warranties Spare parts Concrete works Disposal of any and all materials delivered to the job site

1. Proposal is valid for 60 days starting Nov 7th, 2025. After deadline pricing might change.

2. Lead times estimated: 4 to 6 weeks for submittals. 16 weeks for manufacturing after approved submittals. Firm mutually acceptable delivery schedules to be established upon Submittal review and acceptance by project engineer and contractor. Please contact us to arrange for delivery schedule.

3. Contractor to field verify all dimensions, quantities stated above are based on AETs review of the project specifications and plans. Contractor to confirm accuracy of all quantities and maintain usage within the limits of proposed quantities.

4. Shipping delays that exceed one month from the originally established delivery schedule may result in an invoice for stored materials.

5. Pricing does not include installation services.

6. All costs for Payment and Performance bonds (if required) are by Client Company.

7. Please take note that the quoted price is excluding of any Federal and/or State and/or Municipal Sales, Use or Consumption Taxes. The Contract value and/or Invoices will be adjusted to include any Taxes that might be assessed as applicable.

8. Pricing is based on the specified scope of work. Deletion or addition of scopes of work may require a revision of pricing.

9. The following is the proposed payment milestone schedule:

20% with approved submittals / 30% after manufacturing, before shipping / 50% 30 days after shipping.

10. Any final negotiated contract is subject to approval by AET LLC.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 10 OF 11

Terms & Conditions

1. APPLICABILITY. These Standard Conditions of Sale shall apply to all quotations issued and orders accepted (“Order”) by AET LLC (the “Company”), and shall take precedence over any terms and conditions set forth in any purchase order or other communication issued by the purchaser and all other terms and conditions are hereby explicitly rejected.

Sale may not be modified except in writing by an authorized representative of the Company.

2. PROPOSALS. Written quotations are valid for 30 days unless otherwise stated in writing. Prices shown in published price lists or other literature are not offers to sell by the Company and are subject to confirmation by specific quotations.

All price lists and discounts are subject to change without notice prior to acceptance of an Order.

3. ORDER. All purchase orders received from the purchaser are subject to acceptance by the Company. Shipping dates are subject to final confirmation or change by the Company and are based on prompt receipt of all necessary information regarding the Order.

4. PAYMENT TERMS. Payment terms are determined by the company and stated in the proposal. No deductions are to be made from amounts due unless specifically authorized by the Company in writing.

5. TAXES. The Company’s prices do not include sales, use, or excise taxes, tariffs, duties, or export fees. In addition to the purchase price, there shall be added to the billing price an amount equal to any applicable sales, use, excise or other tax levies on the sale or use of the apparatus ordered by the purchaser.

6. HELD ORDERS. Should shipment of an Order be delayed beyond the original scheduled shipping date for the convenience of the purchaser or because of lack of shipping instructions, such an Order is referred to as a held Order.

The Company will be entitled to storage charges, deferred payment and any other expenses incurred as a result of the delayed shipment. Billing will be issued immediately for all held equipment and charges, and payment in full is due 30 days from invoice date. Additional charges on held Orders will, in some instances, be equal to cancellation charges. Held goods and material will be stored at purchaser’s expense and at the purchaser’s risk.

7. RESCHEDULED ORDERS. The Company requires an advance notice of 30 days to readjust schedules on shipping dates revised by the purchaser. All reschedules must include new scheduled shipping dates or the Order will be considered a “held” Order and any additional charges will be for the purchaser’s account.

8. DELIVERY. Unless specified differently in the Order, shipments are FCA point of manufacture, freight collect. The Company will choose the routing of shipments unless the purchaser specifies a routing.

9. SHIPPING DATES. The Company shall not be responsible or liable for any loss, damage, detention or delay resulting from causes beyond its control, including but not limited to fire, strike or other labor action, civil or military authority, preference ratings issued by the United States Government or any department branch or representative thereof, insurrection or riot, embargoes, or delays in transportation or inability to obtain necessary labor, materials or manufacturing facilities due to such causes, nor in any event for consequential damages. The Company expressly rejects any penalty or liquidated damage clauses in purchase orders or contact, which relate to the Company’s failure to meet target shipping dates, except in those specific cases where such clauses are required by law and approved in writing by the Company.

PROPOSAL # 2025 – 0194 (HARRISONBURG WTP) PAGE 11 OF 11

10. WARRANTY. Company warrants that the products or goods delivered will conform to the specifications provided by the purchaser for such products or goods, and will be free from defects in material and workmanship for a period of two

(2) years from the date of shipment. Any claims under this warranty must be made in writing to the Company within 30 days of the discovery thereof. The Company’s obligation under this warranty shall be limited to the repair or replacement at the Company’s option, of the product or goods, or any part thereof. When the Company has determined the product is not as warranted; any product or parts repaired or replaced pursuant to this warranty will be warranted for the remainder of the original warranty period. The Company is not responsible for and does not warrant equipment furnished by the purchaser or any defects caused thereby. The Company shall not be responsible for any claims, which the Company determines are due to improper installation, operation, above rated capacity or accident, or because the product has been used, adjusted, altered, handled, maintained or stored other than as directed by the Company. For any returns, the purchaser must apply for authorization before returning any product to the factory for credit. The Company will advise the purchaser of the credit to be allowed and necessary restocking charges on unused materials, subject to Company’s inspection and acceptance when received.

This warranty is exclusive and in lieu of all other warranties and representations, expressed or implied or statutory, whether written or oral, including but not limited to any warranty of merchantability or fitness for any particular purpose, and any implied warranty from any course of performance or dealing or trade usage.

DEALING OR TRADE USAGE.

12. INDEMNIFICATION. Purchaser shall indemnify and hold harmless Company, its owners, parents, affiliates subsidiaries, officers, directors, employees, and agents, from any and all liability, loss, expense (including reasonable attorneys' fees and costs incurred by Company) with respect to (a) claims of misuse of proprietary information, and infringements of patents, trademarks or copyrights based on designs, drawings, specifications or other information which purchaser provides to Company or which are developed by Company or others in conjunction with AET LLC.

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 1 OF 11

Date: November 10th, 2025

Subject: AET LLC Budget estimate 2025-0225 Harrisonburg, VA scraper systems

Dear Sir or Madam:

AET LLC is pleased to present the following budget estimate for chain & flight scraper systems.

Please refer to pages 2 through 7 of this proposal for details.

Proposal is based on the attached Terms and Conditions. If our proposal is otherwise acceptable, we will work with you to negotiate mutually acceptable Conditions of Sale for this project.

We trust this information is sufficient for your evaluation of our proposal. However, if you need additional information or to discuss this proposal further, please do not hesitate to contact me at 727 238 2504 or info@aqua-equip.com.

Sincerely, Karl-Uwe Schmitz

Karl-Uwe Schmitz Sales Agent and Engineering Consultant

Karl Schmitz

1302 Waugh Dr. #836

Houston, TX 77019

Telephone (727) 238 2504 info@aqua-equip.com www.aqua-equip.com

Alec Pagano Heyward Incorporated 10146 West Broad Street Glen Allen, VA 23060 Mobile: 804.759.9353 apagano@heywardinc.com

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 2 OF 11

Scope of supply

Chain & Flight scraper systems

AET LLC will provide chain & flight bottom scraper and control panels for the following basin dimensions:

Quantity Description Dimensions

4 Rectangular chain & flight 3-shaft scraper

100 x 27.41 x 15ft (L x W x H) (L x W x H)

4 3-shaft cross collector mechanism

27’ x 4’ (L x W)

2 Control Panel -

Rectangular chain & flight scraper - Lamella Settler 3-shaft scraper

Description:

Application: Lamella Settler Scraper type:

3-shaft, bottom sludge scraping system As per enclosed specification

Main dimensions:

-Basin length: 100 ft -Basin width: 27.41 ft -Water depth: 15 ft

Steel material below water level: AISI304 Steel material above water level: AISI304

Incl. EL-FI Drive overload monitor Incl. Flight parallel run sensors

Speed of scraper approx. 4 ft/min _ 3/4 in/s Drive unit Nord Gear or equal; estimated power 0,25 Drive unit painting C3 (Nord F3.1) RAL5010

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 3 OF 11

3-shaft cross collector mechanism

Main dimensions:

-Basin length: 27ft -Basin width: 4ft -Water depth: 15ft

Steel material below water level: AISI304 Steel material above water level: AISI304

Incl. EL-FI Drive overload monitor Incl. Flight parallel run sensors Speed of scraper approx. 4 ft/min _ 3/4 in/s

Drive unit Nord Gear or equal; estimated power 0,25 Drive unit painting C3 (Nord F3.1) RAL5010

Control Panel

Description:

Local Standard Control Cabinet

Box Material with Door: Non-metallic Voltage: 460V 60Hz 3phase, or customer specified

Functionality:

-On/Off Control -Auto and Manual Mode -Emergency Stop -Over/Under Load Protection -Monitoring of flight parallel running

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 4 OF 11

Supervision, freight, and documentation

The scope of supply includes freight to the job site in Harrisonburg, VA. All equipment is packaged on pallets and can be unloaded with a forklift. Individual pallet weight will not exceed 4,000lbs.

Design calculations, drawings and standard O&M manuals are included.

Technical field supervisor for start-up of the chain & flight scraper system is included. (1 trip with 3 days) Additional days will be charged at a daily rate of 800USD + travel expenses.

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 5 OF 11

Explosion drawing of scraper: (see also attached brochure)

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 6 OF 11

WV, USA: 4 Basins each 5MGD – Drinking water application

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 7 OF 11

IN, USA: 4 Basins each 20MGD – Drinking water application

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 8 OF 11

Pricing section

Scraper systems:

Item Quantity Price per pc Total price

Rectangular chain & flight 3-shaft scraper

4 units

Cross collector mechanism

4 units

Control Panel 2 units

Freight to job site

Taxes ............................................................................................................ Not included

Total project price

Please take note that the quoted price is excluding of any Federal and/or State and/or Municipal Sales, Use or Consumption Taxes. The Contract value and/or Invoices will be adjusted to include any Taxes that might be assessed as applicable.

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 9 OF 11

PRICING NOTES / CLARIFICATIONS

Included in the Scope of Supply are:

Scraper systems as described on page 2 to 7 Freight to Harrisonburg, VA Scraper documentation incl. drawings, O&M manuals and AET design calculations 1 Year warranty on product defects as specified

Not included in the Scope of Supply are:

All unloading, cutting or other field modifications Scraper installation Performance warranties Spare parts Concrete works Disposal of any and all materials delivered to the job site

1. Pricing is valid for 45 days after proposal date.

2. Delivery time is between 22 to 24 weeks from date of order and after approved submittals. Firm mutually acceptable delivery schedules to be established upon Submittal review and acceptance by project engineer and contractor.

Please contact us to arrange for delivery schedule.

3. Contractor to field verify all dimensions, quantities stated above are based on AETs review of the project specifications and plans. Contractor to confirm accuracy of all quantities and maintain usage within the limits of proposed quantities.

4. Shipping delays that exceed one month from the originally established delivery schedule may result in an invoice for stored materials.

5. Pricing does not include installation services.

6. All costs for Payment and Performance bonds (if required) are by Client Company.

7. Please take note that the quoted price is excluding of any Federal and/or State and/or Municipal Sales, Use or Consumption Taxes. The Contract value and/or Invoices will be adjusted to include any Taxes that might be assessed as applicable.

8. Pricing is based on the specified scope of work. Deletion or addition of scopes of work may require a revision of pricing.

9. The following is the proposed payment milestone schedule:

TBD

10. Any final negotiated contract is subject to approval by AET LLC.

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 10 OF 11

Terms & Conditions

1. APPLICABILITY. These Standard Conditions of Sale shall apply to all quotations issued and orders accepted (“Order”) by AET LLC (the “Company”), and shall take precedence over any terms and conditions set forth in any purchase order or other communication issued by the purchaser and all other terms and conditions are hereby explicitly rejected.

Sale may not be modified except in writing by an authorized representative of the Company.

2. PROPOSALS. Written quotations are valid for 30 days unless otherwise stated in writing. Prices shown in published price lists or other literature are not offers to sell by the Company and are subject to confirmation by specific quotations.

All price lists and discounts are subject to change without notice prior to acceptance of an Order.

3. ORDER. All purchase orders received from the purchaser are subject to acceptance by the Company. Shipping dates are subject to final confirmation or change by the Company and are based on prompt receipt of all necessary information regarding the Order.

4. PAYMENT TERMS. Payment terms are determined by the company and stated in the proposal. No deductions are to be made from amounts due unless specifically authorized by the Company in writing.

5. TAXES. The Company’s prices do not include sales, use, or excise taxes, tariffs, duties, or export fees. In addition to the purchase price, there shall be added to the billing price an amount equal to any applicable sales, use, excise or other tax levies on the sale or use of the apparatus ordered by the purchaser.

6. HELD ORDERS. Should shipment of an Order be delayed beyond the original scheduled shipping date for the convenience of the purchaser or because of lack of shipping instructions, such an Order is referred to as a held Order.

The Company will be entitled to storage charges, deferred payment and any other expenses incurred as a result of the delayed shipment. Billing will be issued immediately for all held equipment and charges, and payment in full is due 30 days from invoice date. Additional charges on held Orders will, in some instances, be equal to cancellation charges. Held goods and material will be stored at purchaser’s expense and at the purchaser’s risk.

7. RESCHEDULED ORDERS. The Company requires an advance notice of 30 days to readjust schedules on shipping dates revised by the purchaser. All reschedules must include new scheduled shipping dates or the Order will be considered a “held” Order and any additional charges will be for the purchaser’s account.

8. DELIVERY. Unless specified differently in the Order, shipments are FCA point of manufacture, freight collect. The Company will choose the routing of shipments unless the purchaser specifies a routing.

9. SHIPPING DATES. The Company shall not be responsible or liable for any loss, damage, detention or delay resulting from causes beyond its control, including but not limited to fire, strike or other labor action, civil or military authority, preference ratings issued by the United States Government or any department branch or representative thereof, insurrection or riot, embargoes, or delays in transportation or inability to obtain necessary labor, materials or manufacturing facilities due to such causes, nor in any event for consequential damages. The Company expressly rejects any penalty or liquidated damage clauses in purchase orders or contact, which relate to the Company’s failure to meet target shipping dates, except in those specific cases where such clauses are required by law and approved in writing by the Company.

PROPOSAL # 2025 – 0225 (HARRISONBURG VA) PAGE 11 OF 11

10. WARRANTY. Company warrants that the products or goods delivered will conform to the specifications provided by the purchaser for such products or goods, and will be free from defects in material and workmanship for a period of one

(1) year from the date of shipment. Any claims under this warranty must be made in writing to the Company within 30 days of the discovery thereof. The Company’s obligation under this warranty shall be limited to the repair or replacement at the Company’s option, of the product or goods, or any part thereof. When the Company has determined the product is not as warranted; any product or parts repaired or replaced pursuant to this warranty will be warranted for the remainder of the original warranty period. The Company is not responsible for and does not warrant equipment furnished by the purchaser or any defects caused thereby. The Company shall not be responsible for any claims, which the Company determines are due to improper installation, operation, above rated capacity or accident, or because the product has been used, adjusted, altered, handled, maintained or stored other than as directed by the Company. For any returns, the purchaser must apply for authorization before returning any product to the factory for credit. The Company will advise the purchaser of the credit to be allowed and necessary restocking charges on unused materials, subject to Company’s inspection and acceptance when received.

This warranty is exclusive and in lieu of all other warranties and representations, expressed or implied or statutory, whether written or oral, including but not limited to any warranty of merchantability or fitness for any particular purpose, and any implied warranty from any course of performance or dealing or trade usage.

DEALING OR TRADE USAGE.

12. INDEMNIFICATION. Purchaser shall indemnify and hold harmless Company, its owners, parents, affiliates subsidiaries, officers, directors, employees, and agents, from any and all liability, loss, expense (including reasonable attorneys' fees and costs incurred by Company) with respect to (a) claims of misuse of proprietary information, and infringements of patents, trademarks or copyrights based on designs, drawings, specifications or other information which purchaser provides to Company or which are developed by Company or others in conjunction with AET LLC.

Harrisonburg WTP, VA Water Treatment Plant Improvements

TUBE SETTLERS BASE

SECTION ??? - TUBE SETTLERS BASE

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes: Tube settler equipment.

B. Related Requirements:

1. Section ???

1.2 DEFINITIONS

A. FRP: Fiberglass-reinforced plastic.

1.3 REFERENCE STANDARDS

A. National Sanitation Foundation International:

1. NSF 61 - Drinking Water System Components - Health Effects.

2. NSF 372 - Drinking Water System Components - Lead Content.

1.4 COORDINATION

A. Coordinate Work of this Section with Work of other Sections.

1.5 SUBMITTALS

A. Section ??? - Submittal Procedures: Requirements for submittals.

B. Product Data: Submit manufacturer's product information for system materials and component equipment.

C. Structural load simulation of the new support system. Stamped and signed by a professional engineer registered in VA.

D. Shop Drawings:

1. Indicate system materials and component equipment.

2. Submit installation and anchoring requirements, fasteners, and other details.

E. Manufacturer to certify that installation is completed according to manufacturer's instructions.

F. Manufacturer Instructions: Submit detailed instructions on installation requirements, including storage and handling procedures.

G. Source Quality-Control Submittals: Indicate results of factory tests and inspections.

H. Field Quality-Control Submittals: Indicate results of Contractor-furnished tests and inspections.

I. Manufacturer Reports:

1. Certify that equipment has been installed according to manufacturer's instructions.

2. Indicate activities on Site, adverse findings, and recommendations.

J. Qualifications Statement:

1. Submit qualifications for manufacturer.

1.6 QUALITY ASSURANCE

A. Materials in Contact with Potable Water: Certified to NSF Standard 61.

B. Perform Work according to equipment manufacturer standards.

C. Maintain two (2) copies of each standard affecting Work of this Section on Site.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing of lamella clarifiers with minimum five (5) years’ documented experience and a minimum of ten (10) similar sized installations

B. On Site Assembly: For on-site-assembly system supplier shall provide detailed assembly instructions, assembly tools and a field supervisor for the duration of the assembly.

C. Logistics: All delivered equipment of the tube settler media system shall be stored, handled, and installed per the system supplier written literature and, in a way, so as to avoid damage to the tube settler modules and accessory equipment.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Section ??? - Product Requirements: Requirements for transporting, handling, storing, and protecting products.

B. Inspection: Accept materials on Site in manufacturer's original packaging and inspect for damage.

C. Store and protect materials according to manufacturer's instructions.

1.9 EXISTING CONDITIONS

A. Field Measurements:

1. Verify field measurements prior to fabrication.

2. Indicate field measurements on Shop Drawings.

1.10 WARRANTY

A. Furnish one–year (1) manufacturer's warranty for tube settler equipment, accessories and support/anti-floatation system, collection troughs, effluent troughs, and baffle wall equipment guaranteed to be free from defects in material and workmanship (1) year from the date of substantial completion.

PART 2 - PRODUCTS

2.1 TUBE SETTLERS

A. Manufacturers:

1. Aqua Equip Technologies (AET)

Tube settler equipment and chain-and-flight sludge collection (chain scraper) equipment for each basin shall be furnished by the same manufacturer, who shall be responsible for the compatibility and coordinated performance of the tube settler system and the sludge collection system.

PART 3 - Work shown on the drawings and as specified is based on AET. If an alteration is needed to install the equipment layout by not using the design basis (AET), any associated cost for mechanical, electrical, conduit/controls and structural/ architectural work needed to incorporate that option shall be at the contractor’s expense and at no additional cost to the Owner. The proposed redesign shall be subject to review and approval of the Engineer and contractor prior to beginning work.

A. System Description

1. The supplier shall provide a Tube settler module system. The tube settler modules shall have tubular chevron-shaped sedimentation channels for enhanced particle sedimentation and sludge removal.

2. Tube settler modules shall be made of Polypropylene suitable for direct sunlight and UV radiation impact with Certification for application in potable water (NSF61 certificate).

3. The manufacturer shall provide pre-cut tube settler packs. Field trimming shall not be allowed.

4. The supplier shall provide an effluent trough system capable of safely conveying an influent flow of 3.80 MGD (2,640 gpm) per basin. The system shall be fully compatible with the existing concrete effluent troughs, integrate seamlessly into their configuration, and be designed to mitigate or compensate for potential backflow from the concrete troughs.

5. Manufacturer shall provide a new support structure and baffle walls. Manufacturer must provide a structural load calculation for the support structure stamped and signed by a professional engineer in VA.

B. Tube Settler Geometry:

Number of Basins 4 Length of tube settler basin (ft) 40ft Width of basin (ft) 27.41ft Height of tube settler modules (ft) 2.5ft Specific vertical projected surface (ft2/ft3) 3.3 ft2/ft3 Volume of tube settlers (ft3) per basin 2,741ft3

C. Media Geometry

1. Tube settler modules shall consist of form-locking profiles (i.e. tongue and groove type) and be thermal welded to modules. Gluing is not accepted.

2. The channels must have parallel upper and lower sides. (Equidistant lamellas). Round, rhomboid and other not parallel settling areas are not accepted as equal.

3. Tube settler shall be inclined by 60° and shall be chevron-shaped to guide the settled sludge towards the center line of the settling plane.

4. Individual channels shall not end at vertical sides of a module and be continued by another module. Modules shall have inclined side faces at the same angle as the tubes to ensure straight channels without interruption. Modules shall have a minimum weight of 2.5 lb./cft. (40 kg/m3).

5. Tube settlers shall be precut in the manufacturers facility prior to shipping. No field trimming shall be necessary.

D. Tube Settler Support- and Anti-Floatation Structure

1. The support and anti-floating system for the tube settlers and baffles shall be manufactured entirely of Type 304 stainless steel or NSF61 approved FRP shapes. Said shapes shall integrate the functions of supporting tube settlers and baffles. The support system shall be designed and provided by the tube settler supplier. Grating on top of the tube settlers shall not be allowed to avoid clogging. In total not more than 5% of the tube settler module channels shall be blocked by the supporting and anti-floating system.

2. The support beams shall span over the entire basin width of 27.41ft and be supported in the center (at 13.7ft from each basin concrete wall) by stainless steel 304 upright columns. The upright columns must be mounted to the top of the center concrete ridge which also functions as a divider wall for the chain & flight scraper mechanisms.

3. Along the concrete ridge divider wall, the Contractor shall cast-in-place concrete pedestals (7 in. × 7 in.) to support the base plates of the stainless steel 304 upright columns. Refer to the drawings for additional details.

4. The support structures shall be designed to support 200 lbs. per linear foot, or a concentrated load of 300 lbs. placed anywhere on the structure. The maximum deflection of the structure under full live load shall be maximum 0.5% of the beam span.

5. The support structure shall not interfere with the operation of the sludge removal system and can therefore not include any stanchions or other fixtures on the bottom of the basin.

6. Protective surface grating on the top of the tube settlers shall not be allowed.

7. To protect the tube settler modules from floating or shifting during operation manufacturer needs to provide a hold-down system.

8. Manufacturer needs to provide a structural analysis of the support system.

E. Baffle Walls

1. Baffle walls needs to be constructed of stainless steel 304 or FRP shapes.

2. Baffle walls need to be attached to basin walls only. Attachment to the basin floor or ceiling beams is not allowed.

3. Baffle walls need to support their own weight, weight of the support system and weight of tube settlers. Manufacturer needs to provide a structural analysis of the baffle wall system.

F. Effluent Launders

1. The clear water above the tube settlers is collected by four (4) effluent launders per basin in length. Each launder is approximately 40 ft long and is designed for a flow of 659.72 gpm, for a total of

3.80 MGD (2,640 gpm) per basin.

2. The channel shaped launders are equipped with an adjustable V-notch overflow weir which ensures even water effluent. The effluent launders have to be hydraulically calculated by the manufacturer and provided to the engineer for approval. Material of effluent launders is Type 304 stainless steel or NSF approved FRP.

3. The manufacturer also must provide wall attachment to fix the effluent launders to the tank walls. To avoid corrosion all holes for launder attachment have to be CNC drilled and sealed in the manufacturer’s shop prior to delivery. All welds must be robotically welded and attachment plates have to be laser cut to ensure accuracy of the end product. Manufacturer must be located in the US with at least 5 years of experience in the water industry.

G. General – Effluent Launders

1. The manufacturer must provide a hydraulic calculation as well as a CFD study…