UOSA IFB 27-01 L2 Carbon Front End Documents.pdf

UOSA CONTRACT L2 GAC Page 1 of 4 SEPTEMBER 2026 Invitation for Bids

Upper Occoquan Service Authority

Invitation for Bids # 27-01

GAC Treatment Optimization

CONTRACT L2 GAC

Issued By:

UOSA Purchasing Department 14631 Centreville, Virginia 20121-2506 703-830-2200 | purchasing@uosa.org | http://www.uosa.org

Schedule:

Date Issued: Friday, September 4, 2026

Prebid Meeting Thursday, September 17, 2026 10:00 AM

Deadline for Questions: Friday, September 25, 2026

Bids Must be Received On or Before: Tuesday, October 6, 2026 2:00 PM

NOTICE: Firms who have received this solicitation package from a source other than UOSA’s Purchasing Office should immediately contact UOSA’s Purchasing Department and provide their name and mailing address in order that amendments to this solicitation or other communications can be sent to them. Firms who fail to notify the Purchasing Office with this information assume complete responsibility in the event that they do not receive communications prior to the closing date.

This document is not the complete solicitation package. Please contact the UOSA Purchasing department at purchasing@uosa.org to receive the complete package including the specifications and drawings and to be placed on the plan holders list.

UOSA CONTRACT L2 GAC Page 2 of 4 SEPTEMBER 2026

Introduction

The Upper Occoquan Service Authority (UOSA) invites qualified contractors to submit sealed Bids for the project known as “UOSA GAC Treatment Optimization”, and also by the name “UOSA CONTRACT L2 GAC.” Sealed Bids addressed will be received at the office of the Upper Occoquan Service Authority at the date and time given below. The sealed Bids then will be publicly opened and read aloud. The Owner will read only the Lump Sum Bid amount written in words. Any Bid received after the date and time specified will not be considered.

The procurement process and the performance of the Contract shall be governed by the provisions of the Virginia Public Procurement Act (VPPA).

Objective

Phase 1 of the GAC Treatment Optimization Project includes, but is not limited to, retrofitting one L/2 Building carbon contactor, consisting of two cells, to serve as the per- and polyfluoroalkyl substances (PFAS) pilot study system; restoring upflow and downflow operating capability through modifications to the existing underdrain nozzle system; and implementing a proof-of-concept evaluation for carbon transfer improvements. If authorized by the Owner, Phase 2 of the Project will include, but is not limited to, retrofitting the remaining seven carbon contactors (i.e., fourteen cells) with the selected improvements based on the results of Phase 1. A complete description of the Work can be found in the Contract Documents.

The following are the addresses of the Owner and Engineer.

Owner’s and Site Address

Upper Occoquan Service

Authority 14631 Compton Road

Centreville, Virginia 20121-2506

703-830-2200

Engineer’s Address CDM Smith

10306 Eaton Place, Suite 220

Fairfax, VA 22030

703-691-6500

Pre-Bid Meeting and Site Tour

An optional pre-bid meeting and site tour will be held at the time and date specified on the cover page of this IFB. The purpose of this meeting is to allow potential Bidders an opportunity to present questions and obtain clarification relative to any facet of this solicitation. While attendance at this meeting will not be a prerequisite to submitting a bid, Bidders who intend to submit a bid are encouraged to attend. Please contact purchasing@uosa.org to confirm your

UOSA CONTRACT L2 GAC Page 3 of 4 SEPTEMBER 2026 attendance.

The site visit is not mandatory and is not a pre-requisite for submitting bids.

However, failure to attend the site visit will not relieve the Bidder from the responsibility for ascertaining conditions at the site and claims as a result of failure to visit the job site will not be considered by UOSA. All Bidders shall submit questions in writing by the Deadline for Questions date shown on the cover sheet of this IFB in compliance with the bid document.

Questions and Communications

All contact between prospective Bidders and UOSA with respect to this solicitation should be in writing through the Purchasing Office. Questions concerning this solicitation are due by the deadline for questions shown on the cover page. Misinterpretation of specifications shall not relieve the Contractor(s) of responsibility to perform. Substantive questions must be submitted in writing via mail, e-mail, fax, etc., to the attention of the UOSA Purchasing Department (see contact information on the cover of this document). Questions submitted after the deadline will not be answered.

All properly submitted substantive questions will be responded to in writing, in the form of an addendum to the solicitation. Failure to submit questions or to otherwise seek clarification(s) by the deadline for submitting questions shall constitute a waiver of any potential claim by the Bidder/contractor. All questions will be answered via an Addendum to the solicitation.

Communications between prospective Bidders, their agents and/or representatives and any member of UOSA other than as authorized herein, concerning this solicitation are prohibited. In any event and in all circumstances, unauthorized communication cannot be relied upon.

Contract Award

A contract will be awarded to the lowest responsive and responsible Bidder as delineated in this Invitation for Bids (IFB) and will be based on the total cost as indicated on the Bid Summary Sheet.

Prior to Contract award for the Work contemplated by the Contract Documents, the Owner will conduct such investigation as the Owner deems appropriate to determine the performance record and ability of the apparent lowest Bidders to perform the size and type of Work specified under the Contract. Upon request, each Bidder shall submit such information as is deemed necessary by the Owner to evaluate the Bidder's qualifications. Failure to submit information deemed necessary by the Owner shall make the Bid non- responsive and the Owner at its sole discretion may reject the Bid.

Bidders are referred to the Instructions to Bidders for information regarding Bidder qualifications.

The attention of Bidders is directed to Contract Inserts for Wastewater Construction Bids in Instruction to Bidders, and the applicable

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Commonwealth of Virginia requirements and conditions of employment to be observed under the Contract.

Bidder shall inform itself of, and the Bidder awarded the Contract shall comply with, all Federal, State, and local laws, statutes, ordinances, and regulations relative to the execution of the Work. These requirements include, but are not limited to, applicable regulations concerning minimum wage rates, nondiscrimination in the employment of labor, protection of natural resources, fire protection, safety, permits, taxes, fees, and similar subjects.

Within the identified time period after the opening of Bids, the Owner will issue written Notice of Award, or Notice of Intent to Award, or will act otherwise as follows:

Notice of Award shall be mailed to the successful Bidder at the office address given on the Bid Form and Notice thereof to others shall be by posting in the lobby of the Owner's Administration Building and on the Owner’s webpage. In the event of failure of the lowest responsive, responsible Bidder to sign the Contract and provide acceptable insurance certificate(s) and, if required, Performance Bond and Payment Bond, the Owner may award the Contract to the next lowest responsive, responsible Bidder.

The rights are reserved by the Owner to (i) reject all Bids; (ii) reject any Bid not conforming in all material respects to the Invitation to Bid and to the intent and purpose of the Contract Documents; and (iii) waive informalities and irregularities in any Bid.

The right also is reserved by the Owner to negotiate with the responsible Bidder submitting the lowest responsive Bid in the event such Bid exceeds the Owner's budget for the Work. Such negotiations, if the Owner elects to negotiate rather than reject all Bids, shall be directly between the Owner and such Bidder. The Owner and such Bidder shall review the Contract Documents, and the Owner may provide such additional information as it deems appropriate to provide. Such Bidder then may be invited by the Owner to submit a revised Bid. Such Bidder shall be under no obligation to submit a revised Bid and the Owner may reject any such revised Bid.

UOSA CONTRACT L2 GAC Page 1 of 13 SEPTEMBER 2026 Instructions to Bidders

INSTRUCTIONS TO BIDDERS

GAC Treatment Optimization Project

UOSA CONTRACT L2 GAC

1. CONTRACT DOCUMENTS

A. FORMAT

The Contract Documents are divided into parts, divisions, and sections for convenient organization and reference. Generally, there has been no attempt to divide the Specifications into Work performed by the various building trades, Work by separate Subcontractors, or Work required for separate facilities in the Project. The content of the Specifications, not the heading or description, shall determine to what portion of the Work the Specifications are applicable.

B. DOCUMENT INTERPRETATION

1) The separate portions of the Contract Documents are intended to be mutually complementary and to provide the details reasonably required for the execution of the proposed Work.

2) Terms used in these Instructions to Bidders shall have the meanings established by the Contract Documents for the Project.

Should there be any doubt as to the meaning or intent of any Contract Document or of any term or provision therein, the Bidder shall request of the Owner, in writing (to be received by the Owner at least Ten (10) days prior to the bid opening) an interpretation thereof. Any interpretation or change in the Contract Documents will be made only in writing and signed by the Owner, in the form of Addenda to the Contract Documents, which will be furnished to all Official Bidding Document Holders (those who have obtained from the Owner a complete set of Contract Documents). The Owner will not be responsible for nor in any way bound by any other explanation or interpretation of the Contract Documents regardless of who is asserted to have provided such explanation or interpretation. Bidders shall acknowledge on the Bid Form in the space provided receipt of all Addenda.

2. GENERAL DESCRIPTION OF THE PROJECT

A. A general description of the Work to be performed under the Contract is set forth in the Invitation to Bid. The scope of the Work is more fully set forth in the other Contract Documents.

3. REGISTRATION REQUIREMENTS FOR CONTRACTORS

A. Contractors and Subcontractors, whether resident or nonresident in Virginia, will be required to show evidence of a license as required by Chapter 11 of Title 54.1 of the Code of Virginia and all licenses required under applicable Fairfax County, Virginia requirements.

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B. Proof of licensure of a Subcontractor shall be submitted to the Owner before the Subcontractor commences Work under the Contract. No portion of the Contract shall be performed by a Subcontractor not then holding all licenses required by Chapter 11 of Title 54.1 of the Code of Virginia and applicable Fairfax County, Virginia requirements.

C. A Bidder organized or authorized to transact business in the Commonwealth of Virginia pursuant to Title 13.1 or Title 50 of the Virginia Code shall include in its Bid the identification number issued to it by the Virginia State Corporation Commission. Any Bidder that is not required to be authorized to transact business in the Commonwealth of Virginia as a foreign business entity under Title 13.1 or Title 50 of the Virginia Code or as otherwise required by law shall include in its Bid a statement describing why the Bidder is not required to be so authorized. Any Bidder that fails to provide the required information shall not receive an award unless a waiver of this requirement is granted by the Commonwealth of Virginia Director of the Department of General Services.

4. QUALIFICATIONS OF BIDDER

A. The Owner will consider, in determining the qualifications of a Bidder, its record in the performance of any contract with any public bodies or corporations, and the Owner expressly reserves the right to reject the Bid of any Bidder if its record discloses that such Bidder, in the opinion of the Owner, has not properly performed such contracts or has habitually and without just cause neglected the payment of bills, or has otherwise disregarded its obligations to the contracting authorities, subcontractors, or employees.

B. The Owner may make such investigation as the Owner deems necessary to determine the ability of the Bidder to perform the Work, and the Bidder shall furnish the Owner all such information and data for this purpose as the Owner may request. Such information shall include, but is not limited to, documentation regarding the Bidder’s ability and experience relative to past performance of Work of the general nature of that included in this Contract.

C. The Owner reserves the right to reject any Bid if the evidence submitted by, or investigation of, such Bidder fails to satisfy the Owner that such Bidder is properly qualified by experience or has the financial status to carry out the obligations of the Contract and to complete the Work contemplated therein.

D. Only Official Bidding Document Holders (those who obtained from the Owner a complete set of Contract Documents) will receive Addenda and only Official Bidding Document Holders may submit a Bid. The Contract Documents are dependent and complementary, and it is necessary to review all parts of the Contract Documents to fully understand the Contract requirements and scope of the Work.

E. All Bidders shall have completed at least three (3) projects in the last 10

UOSA CONTRACT L2 GAC Page 3 of 13 SEPTEMBER 2026 years similar in scope and magnitude to the Work included in the Contract, and the Bidder shall submit a description of the three projects, if requested, and the project references including owner and engineer addresses and telephone numbers.

5. BIDDER’S UNDERSTANDING

A. Each Bidder shall inform itself of all conditions relating to the performance of the Work. The submission of a Bid shall constitute a representation by the Bidder that it has exercised due diligence in the inspection of the Site and has thoroughly familiarized itself with all the Bidding Documents.

Failure of the Bidder to have, in fact, done so will not relieve the successful Bidder of its obligation to enter into the Contract and complete the contemplated Work in strict compliance with the Contract Documents.

Prospective Bidders are invited, at their own expense, to make additional facility, equipment, and subsurface investigations; provided, however, that such work is scheduled by appointment with the Owner and all disturbed Site areas, facilities, and equipment are restored to the Owner's satisfaction.

B. Any claim for an adjustment of the Contract Price or of the Contract Time shall be subject to and limited by the investigation requirements, the disclosures, the Notice requirements, and all other limitations and conditions set forth in the Contract Documents. The Contractor shall not be entitled to any increase in the Contract Price nor to any extension of the Contract Time for any condition which upon reasonable investigation and in the exercise of due diligence the Contractor should have discovered prior to entering into the Contract.

C. In preparation of the Drawings and Specifications, the Engineer has utilized the following information and drawings of existing facilities and physical conditions in or relating to the existing surface and subsurface facilities and features, which are at or are contiguous to the Site.

D. Any such information that the Owner may have regarding the Site and existing facilities (hereinafter “Site and Existing Facilities Information”) will be available for Bidder review at the Owner’s office by arrangement. Any Site and Existing Facilities Information provided by or available from the Owner shall not be considered a part of the Contract Documents. The Owner makes no representations, warranties or guaranties regarding the accuracy or completeness of any information contained in the Site and Existing Facilities Information. No such information provided by the Owner shall in any way relieve the Contractor from any risk, or from properly and thoroughly examining the Site and making such additional investigations as it may elect, or from properly fulfilling all the requirements of the Contract Documents.

E. Each Bidder shall inform itself of, and the Bidder awarded the Contract shall comply with, all federal, state, and local laws, statutes, ordinances and regulations relative to the execution of the Work. This requirement includes, but is not limited to, applicable regulations concerning minimum

UOSA CONTRACT L2 GAC Page 4 of 13 SEPTEMBER 2026 wage rates, nondiscrimination in the employment of labor, protection of public and employee safety and health, environmental protection, the protection of natural resources, fire protection, permits, licenses, taxes, fees, insurance/extended insurance, and similar subjects.

Permits or fees special to the Contractor conducting business, or required for the execution of a specific portion of the Work or as a result of the manner in which the Contractor elects to conduct the Work, such as, but not limited to, off-site disposal of trees, debris, or regulated and/or hazardous materials, shall be the responsibility of the Contractor.

Further detail concerning permits and licenses appears in General Conditions, Article 64, CODES, ORDINANCES, PERMITS, AND

LICENSES.

F. Each Bidder is advised that the Owner is not aware of any particular invention, design, process, product or device specified in the Contract Documents for use in performance of the Work which use is subject to patent rights or copyrights calling for the payment of any license fee or royalty to others. If a Bidder during preparation of its Bid discovers a requirement for any such fee or royalty, the Bidder shall make this requirement known to the Owner in order that an appropriate addendum may be issued to all Bidders. Further detail concerning royalties and patents appears in General Conditions, Article 80, ROYALTIES AND

PATENTS.

G. The Contract Documents require compliance with the fire protection required by any applicable federal, state, or local laws, statutes, ordinances, or regulations relative to the execution of the Work. In addition, except where expressly permitted, smoking of tobacco products of any kind is prohibited in all parts of the Site occupied by the Owner.

The smoking prohibition includes but is not limited to all existing buildings, structures and facilities and all grounds and between such buildings, structures and facilities; all new construction within Owner-occupied areas; and all new construction once it has been occupied by the Owner. By having submitted a Bid, the Contractor acknowledges that this smoking prohibition is a critical safety requirement due to the presence of explosive gasses throughout the Site and agrees that this smoking prohibition will be strictly enforced at all times.

H. Bidders shall pay particular attention to the requirements for supervision in General Conditions, Article 65, SUPERINTENDENCE. The Owner reserves the right to stop work if qualified on-site supervision is not provided at all times and if a qualified supervisor is not present in the immediate proximity of the Work during working hours.

6. EXECUTION OF THE WORK

The Contractor shall, with its own forces, perform Work having a value at least equal to the 30% percent of contract value.

7. NOTICE TO PROCEED AND FINAL COMPLETION TIMES

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The Contract Time for completion of the Work to be performed under the Contract is the essence of the Contract. Extensions of the Contract Time may be allowed only in accordance with the provisions set forth in the Contract Documents. The time requirements for the Notice to proceed and Final Completion of the Work in the Project are as set forth in the Invitation to Bid and as shown below:

A. Notice to Proceed for the Project will be issued within 30 days after contract execution

B. The Contractor shall achieve both Substantial and Final Completion within the Contract Time as set forth in the Contract form. By submitting a Bid, the Bidder acknowledges that the times set forth herein for Final Completion are reasonable and waives any objection thereto.

8. SUBSTITUTE MANUFACTURERS/SUPPLIERS

A. When the Bid Form allows the Bidder to submit Substitute Manufacturers/Suppliers on a particular Equipment item for Owner's selection, the Bidder shall list only such Substitute Manufacturer's/Supplier's Equipment that will comply with the specified design in function, performance, general configuration, material quality and durability, and that will not adversely impact nor otherwise delay any required completion dates set forth in the Contract Documents. The Bidder shall also include a Submittal that demonstrates that the proposed Substitute Manufacturer satisfies the “Or Equal” requirements in the General Conditions. The Owner's initial selection of any such Substitute Manufacturer's/Supplier's Equipment shall not be construed to indicate either its approval or acceptance thereof, nor to relieve the successful Bidder and/or Substitute Manufacturer/Supplier of the Equipment from performing all obligations required by the Contract Documents and furnishing a completely satisfactory and operable system.

B. When the Bid Form requires specific submittals with the Bid for any proposed Substitute, failure to submit all the required information with the Bid shall be sufficient grounds to result in a determination that the proposed Substitute Manufacturer/Supplier is “not equal.”

9. PREPARATION OF BIDS

A. GENERAL

1) All blank spaces in the Bid Form must be filled in, either typed or printed, in BLACK or BLUE ink. All price information shall be shown in both words and figures where required by the Bid Form. No changes shall be made to the Bid Form. Amounts written in words shall govern in case of any discrepancy between the amount stated in writing and the amount stated in figures.

2) A Bid may be deemed non-responsive which fails to conform to the conditions of the Invitation for Bids, the Instructions to Bidders, or which contains:

UOSA CONTRACT L2 GAC Page 6 of 13 SEPTEMBER 2026

a. Omissions;

b. Additions of any kind;

c. Prices uncalled for;

d. Erasures or alterations which, in the sole discretion of the Owner, are in any way confusing, unclear, or have the potential to mislead; or

e. Prices which are obviously unbalanced.

B. SIGNATURE

1) The Bidder shall sign the Bid Form in the blank space provided therefore. If the Bidder is a corporation, the legal name of the corporation shall be set forth above the signature line, together with the signature of the officer or officers authorized to sign contracts on behalf of the corporation. If the Bidder is a partnership, the true name of the firm shall be set forth above the signature line, together with the signature of the partner authorized to sign contracts on behalf of the partnership. If the Bidder is a joint venture, the true name of the joint venture shall be set forth above the signature line and the Bid shall be signed by each venturer trading as the named joint venture. For example, if AB, Inc., and CD, Inc., are submitting a bid as XYZ Joint Venture, the Bid Form shall be completed andsubmitted identifying the Bidder as “AB, Inc., and CD, Inc., trading as XYZ Joint Venture” and signed by each venturer. If signature is by an agent, other than an officer of a corporation or a member of a partnership, a notarized power-of-attorney must be on file with the Owner prior to opening of Bids or be submitted with the Bid, otherwise the Bid will be regarded as not properly authorized and not responsive.

10. STATE AND LOCAL SALES AND USE TAXES

A. It is anticipated that the Owner will be exempt from state and local sales and use taxes on materials and Equipment incorporated into the Work.

The Bid shall not include sales and use taxes on material or Equipment to be incorporated into the Work. In the event such exemption is determined by governmental authorities to be not applicable, and the Contractor is required to pay any such sales or use taxes, the Contract Price will be adjusted by Change Order to include such tax.

11. SUBMISSION OF BIDS

A. All Bids must be submitted not later than the time prescribed, at the place, and in the manner set forth in the Invitation to Bid and in these Instructions to Bidders. Bids must be made on the Bid Form. Each Bid must be submitted in a sealed envelope (unless submitted electronically via eVA), so marked as to indicate the Bidder's name and its contents without being opened and addressed in conformance with the requirements herein. By submitting a bid in response to this

UOSA CONTRACT L2 GAC Page 7 of 13 SEPTEMBER 2026 solicitation, bidder agrees to be bound by the terms, conditions and specifications contained herein along with any addenda to this solicitation.

Bidders shall complete and submit the following documents in the order listed herein:

1) Bid Form

2) Signed copy of all Addenda or acknowledgment on Bid form.

3) Bid Bond

B. Electronic Bid Submission - In accordance with the Virginia Public Procurement Act 2.2-4303.A (effective January 1, 2025), Bids may also be submitted electronically via eVA, Virginia’s online electronic procurement system at http://eva.virginia.gov. Vendors who are interested in submitting their bids electronically are encouraged to register on eVA by clicking Register Now link on the eVA website homepage.

Bidders requiring assistance submitting an electronic response, must contact eVA Customer Care via email at eVACustomerCare@dgs.virginia.gov or at 866-289-7367.

Bidders shall not submit more than one bid in response to this solicitation. Bidders shall not submit the same bid in two formats (electronically and hard copy). In the event UOSA receives two different Bids from the same Bidder or receives both an electronic and hard copy bid from the same Bidder, UOSA shall consider the last Bid (electronic or hard copy notwithstanding) received prior to the opening due date and time as the final submission of the Bidder. Any other Bids (electronic or hard copy notwithstanding) that preceded that submission shall be returned to the Bidder unopened or shall be rejected or indicated as non-responsive if submitted online.

All documents required by the IFB for bid submission shall be provided whether bids are submitted in electronic or physical format and any bids submitted electronically shall include all required forms to be provided as document attachments to the bid in eVA. In the event that there are required bid elements that cannot be submitted electronically, such as cash or check for bid security, those elements should be submitted physically in a sealed package marked with Bidder contact information, solicitation number and labeling identifying the contents as supplemental information to be included with an online eVA bid submission.

C. At the time of the Bid opening, UOSA shall open hard copy sealed Bids first then open the electronic Bids. All Bids shall be entered on the official Bid Tab for that project. UOSA shall not indicate if the Bid was received electronically or hard copy on the Bid Tab. All Bids (hard copy and electronic) that were accepted and opened will be reviewed for responsiveness and responsibility (as defined by the Virginia Public Procurement Act) for final award of the IFB.

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In the event that bids submitted electronically cannot be accessed at the scheduled time of the bid opening, UOSA will delay bid review and award until such time that the electronic bids may be retrieved. Any physical format bids received will be opened and recorded and electronic bids will be added to the bid tab when they become available. Once all bids have been received, they will be reviewed for responsiveness and responsibility for final award of the IFB.

D. Physical Bid Submission - Physical bids must be delivered in sealed packages no later than the deadline to: Upper Occoquan Service Authority, Building F, 14631 Compton Rd, Centreville, VA 20121. No faxed, emailed or electronic format Bids (other than submissions via eVA) will be accepted. Physical bid submissions must be submitted in sealed envelopes or packages, and identified as follows:

E. Bidders are required to be licensed contractors in the Commonwealth of Virginia in compliance with Title 54.1, Chapter 11, of the Virginia Code. The Bidder’s license number, expiration date and class must be listed in the space provided on the envelope if the bid is submitted in a sealed envelope.

F. Bids or unsolicited amendments to Bids arriving after the closing date and time will not be considered. Bids received after the bid submission deadline will be returned to the Bidder unopened providing that sufficient bid identification information is shown on the outside of the Bid envelope.

12. WITHDRAWAL OF BIDS

A. Any Bid submitted may be withdrawn by Notice to the Owner received by the Owner prior to the time and date designated for receipt of Bids.

Such Notice shall be in writing over the signature of the Bidder in the same format as required for the submission of the Bid. Strict compliance with these requirements is a condition precedent to effective withdrawal of a Bid.

B. A Bidder may withdraw its Bid from consideration after the Bids have been opened if the bid price was substantially lower than the other Bids due solely to a mistake therein, provided the Bid was submitted in good faith, and the mistake was a clerical mistake as opposed to a judgment mistake, and was actually due to an unintentional arithmetic error or an unintentional omission of a quantity of work, labor or material made

UOSA CONTRACT L2 GAC Page 9 of 13 SEPTEMBER 2026 directly in the computation of its Bid, which unintentional arithmetic error or unintentional omission can be clearly shown by objective evidence drawn from inspection of original work papers, documents and materials used in the preparation of the Bid sought to be withdrawn.

If a Bid contains both clerical and judgment mistakes, a Bidder may withdraw its Bid from consideration if the price bid would have been substantially lower than the other Bids due solely to the clerical mistake, that was an unintentional arithmetic error or an unintentional omission of a quantity of work, labor or material made directly in the compilation of a Bid which shall be clearly shown by objective evidence drawn from inspection of original work papers, documents and materials used in the preparation of the Bid sought to be withdrawn. A Bidder seeking to withdraw its Bid on the foregoing grounds shall give Notice in writing of its claim of right to withdraw its Bid in such a manner that such Notice and all original work papers, documents and materials used in the preparation of the Bid are received by the Owner by 5:00 P.M. of the second business day after the conclusion of the Bid opening procedure.

Such mistake shall be proved only from the original work papers, documents and materials delivered as required herein. The Owner shall notify the Bidder of its decision whether or not to permit withdrawal of the Bid within fourteen (14) days after receipt by the Owner of the work papers, documents and materials as required herein in accordance with the provisions of Section 2.2-4330.F, Va. Code Ann.

13. BID SECURITY

A. Any Bid in excess of $100,000 shall be accompanied by cash, a certified check in form acceptable to Owner, or a Bid Bond issued by a Surety authorized to issue such bonds in the Commonwealth of Virginia, in the amount of five percent (5%) of the lump sum Bid submitted. The obligee or payee of the Bid Security shall be the Upper Occoquan Service Authority. This Bid Security shall be given as a guarantee that the Bidder will not withdraw its Bid (except as specifically permitted by these Instructions) for a period of one hundred twenty (120) days after bid opening, and that if awarded the Contract, the successful Bidder will execute the attached Contract and furnish properly executed insurance certificates, Performance Bond and Payment Bond in the full amount of the Contract Price within the time specified. The date of the Bid Security shall be the date of bid opening, or the Surety shall otherwise certify that a Bid Security executed prior to the date of Bid opening is effective at the time of the Bid opening. If Bidder is a partnership or joint venture, all partners or venturers shall execute the Bid Security in a personal and not representative capacity in addition to execution of the Bid Security by the Bidder.

B. If the Bidder provides the Bid Security in the form of a Bid Bond issued by a Surety, the Bidder shall use the Bid Bond form bound herewith. The Attorney-in-Fact who executes such bond on behalf of the Surety must attach a notarized copy of its power-of-attorney in compliance with

UOSA CONTRACT L2 GAC Page 10 of 13 SEPTEMBER 2026 applicable Virginia law as evidence of its authority to bind the Surety on the date of execution of the Bid Bond.

C. If the Bid Security is in the form of cash or certified check, the Bidder shall submit a Bid Security agreement conforming substantially in form and content to the Bid Bond form bound herewith. If the Bid Security is in the form of a certified check, the check shall be made payable to the Upper Occoquan Service Authority. The Owner shall be authorized to deposit such check or cash; to hold the funds for the term required for the Bid Security; and to draw against those funds as provided by the Bid Security agreement

14. EXECUTION OF THE CONTRACT

The successful Bidder shall, within fourteen (14) days after issuance of Notice of Award, sign and deliver to the Owner three (3) copies of the Contract in the form hereto attached together with bonds and proof of insurance as required by General Condition 59 of the Contract Documents. Within twenty-one (21) days after receiving the complete, accurate and signed Contract with required bonds and proof of insurance from the successful Bidder, the Owner's authorized agent will sign the Contract absent proper grounds for declining to do so.

Signature by both parties constitutes execution of the Contract.

15. CONTRACT BONDS

A. PERFORMANCE BOND

If the Contract Price is in excess of $100,000, then at the time of execution of the Contract, the successful Bidder shall file with the Owner a Performance Bond in the form bound herewith, in the full amount of the Contract Price, as security for the faithful performance of the Contract in strict conformity with the requirements of the Contract Documents, and to cover all guarantees against defective workmanship or materials, or both, including but not limited to the Warranty Period. The date of the Performance Bond shall be the date the Contractor signs the Contract, or the Surety shall otherwise certify that the Performance Bond executed prior to the date the Contractor signs the Contract is effective as of the date the Contractor signs the Contract. If Contractor is a partnership or joint venture, all partners or venturers shall execute the bond in a personal and not representative capacity, in addition to execution of the bond by the Contractor.

B. PAYMENT BOND

If the Contract Price is in excess of $100,000, then at the time of execution of the Contract, the successful Bidder shall file with the Owner a Payment Bond in the form bound herewith, in the full amount of the Contract Price, as security for the payment of all persons supplying labor, services, or materials to the Contractor or to or for any entity having a contract with the Contractor, including but not limited to all amounts due for materials, lubricants, oil, gasoline, repairs on machinery, equipment, and tools consumed or used in connection with the construction of the

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Work or incorporated into the Work, and all insurance premiums on the Work, and for all labor performed in the Work, whether by Subcontractor or otherwise, for the construction of the Work. Such bond shall remain in effect for a period of one year after the date of Final Completion and acceptance of all the Work as established by the Owner. The date of the Payment Bond shall be the date the Contractor signs the Contract, or the Surety shall otherwise certify that the Payment Bond executed prior to the date the Contractor signs the Contract is effective as of the date the Contractor signs the Contract. If Contractor is a partnership or joint venture, all partners or venturers shall execute the Bond in a personal and not representative capacity, in addition to execution of the Bond by the Contractor.

C. POWER-OF-ATTORNEY

The Attorney-in-Fact (Resident Agent) who executes any bond on behalf of the Surety must attach a notarized copy of its power-of-attorney in compliance with all applicable Virginia law as evidence of its authority to bind the Surety on the date of execution of the bond.

16. FAILURE TO EXECUTE CONTRACT, FURNISH BOND, AND INSURANCE

CERTIFICATES

A Bidder to whom the Contract is awarded and who fails to execute the Contract and furnish the required bonds and proof of insurance in accordance with Paragraph, EXECUTION OF THE CONTRACT, shall forfeit the lesser of (i) the difference between the amount of its Bid and the next low responsive, responsible Bid, or (ii) the face amount of the Bid Security, and it is agreed that such sum is a fair estimate of the amount of damages the Owner will sustain in case the Bidder fails to enter into a Contract or furnish the required bonds and proof of insurance. Bid Security deposited in the form of cash or certified check shall be subject to the same requirements as a Bid Bond.

17. LIQUIDATED DAMAGES

Liquidated Damages are as defined in the contract form and bid documents.

18. BID EVALUATION

Prior to Contract award for the Work contemplated by the Contract Documents, the Owner will conduct such investigation as the Owner deems appropriate to determine the performance record and ability of the apparent lowest Bidders to perform the size and type of Work specified under the Contract. Upon request, each Bidder shall submit such information as is deemed necessary by the Owner to evaluate the Bidder's qualifications. Failure to submit information deemed necessary by the Owner shall make the Bid non-responsive and the Owner at its sole discretion may reject the Bid.

The rights are reserved by the Owner to (i) reject all Bids; (ii) reject any Bid not conforming in all material respects to the Invitation to Bid and to the intent and purpose of the Contract Documents; and (iii) waive informalities and irregularities in any Bid. The right also is reserved by the Owner to negotiate with the responsible Bidder submitting the lowest responsive Bid in the event such Bid

UOSA CONTRACT L2 GAC Page 12 of 13 SEPTEMBER 2026 exceeds the Owner's budget for the Work. Such negotiations, if the Owner elects to negotiate rather than reject all Bids, shall be directly between the Owner and such Bidder. The Owner and such Bidder shall review the Contract Documents, and the Owner may provide such additional information as it deems appropriate to provide. Such Bidder then may be invited by the Owner to submit a revised Bid. Such Bidder shall be under no obligation to submit a revised Bid and the Owner may reject any such revised Bid.

19. REQUIREMENT REFERENCES

Refer to the Contract Inserts for Wastewater Construction Bids section for the following requirements:

A. Civil Rights and Nondiscrimination Requirements (Disadvantaged Business Enterprises (DBE))

B. Contract Insert Attachment #2 – Wage Determinations

C. Contract Insert Attachment #8 – BABA Initial Certification Statement

D. Contract Insert Attachment #9 – BABA Waiver Request

E. Contract Insert Attachment #10 – BABA Waiver Request Checklist

F. Contract Insert Attachment #11 – BABA Final Certification Statement

END INSTRUCTION TO BIDDERS

UOSA CONTRACT L2 GAC Page 13 of 13 SEPTEMBER 2026

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UOSA CONTRACT L2 GAC Page 1 of 7 SEPTEMBER 2026 Bid Form

BID FORM

IFB 27-01

GAC Treatment Optimization

UOSA CONTRACT L2 GAC

Submitted by:

Name of Bidder:

(Legal Name of partnership, corporation or other form of entity)

Bidder’s Mailing Address for Notices:

Bidder’s Principal Office Address

(If different from above)

Form of Entity:

State of Organization:

Bidder’s Designated Representative:

Telephone No.:

Fax No.:

Email Address:

To: Upper Occoquan Service Authority 14631 Compton Road

Centreville, Virginia 20121-2506

1. BIDDER’S DECLARATIONS AND PROPOSAL

The Bidder declares that it has carefully examined the Contract Documents for the construction of the Project, that it has inspected the Site, that it has satisfied itself as to the quantities, including materials and equipment, and conditions of the Work involved, including the fact that the description of the quantities of Work and materials, as set forth herein, is brief and is intended only to indicate the general nature of the Work and to identify the approximate quantities required to perform the detailed requirements of the Contract Documents, and that the Bid is made according to the provisions and under the terms of the Contract Documents, which Documents are hereby made a part of the Bid.

The Bidder further declares that it has reviewed carefully the requirements of the Contract Documents in relation to the Contract Time as required therein and by submitting a Bid confirms that the Contract Time is reasonable and waives any objection thereto.

UOSA CONTRACT L2 GAC Page 2 of 7 SEPTEMBER 2026

2. CONTRACT EXECUTION, BONDS, AND PROOF OF INSURANCE

The Bidder agrees that if the Bid is accepted it will, within fourteen (14) days after issuance of Notice of Award, sign the Contract in the form contained in the Contract Documents, and deliver to the Owner the required Performance and Payment Bonds, and proof of insurance, and that, thereafter, it will furnish all materials, services, machinery, tools, Equipment, apparatus, and all other means of construction necessary to complete the Work in strict compliance with the requirements of the Contract Documents.

3. LIQUIDATED DAMAGES

In the event the Contractor fails to achieve Substantial Completion within the Contract Time, as such may be adjusted, Liquidated Damages as provided for in the Contract Documents shall be assessed and deducted monthly until Substantial Completion has been achieved.

In the event the Contractor fails to achieve Final Completion within the Contract Time after having achieved Substantial Completion, Liquidated Damages as provided for in the Contract Form and Bid Documents shall be assessed and deducted monthly until Final Completion has been achieved.

In the event more than one ground for assessment of Liquidated Damages as set forth herein exists concurrently, such grounds shall be deemed to be independent and all applicable Liquidated Damages shall be assessed cumulatively.

The Owner is authorized to assess and deduct from funds otherwise due the Contractor Liquidated Damages. By having submitted a Bid, the Contractor waives any defense as to the validity of any Liquidated Damages under the Contract as they may appear on the grounds that such Liquidated Damages are void as penalties or are not reasonably related to actual damage.

4. ADDENDUM /ADDENDA

The undersigned Bidder acknowledges receipt of the following Addenda Numbers:

(Bidder shall insert the number of each Addendum received) and agree that all Addenda issued are hereby made part of the Contract Documents. The Bidder also agrees that its Bid includes all costs and expenses of performance and impacts on time of performance which may arise as a result of the incorporation into the Contract Documents of the Work required by said Addenda.

5. SALE AND USE TAX

The Bidder agrees that no Sale or Use Tax for any material or Equipment to be incorporated in the Work has been included in the prices utilized by the Bidder to arrive at the amount of its Bid.

6. SUBMITTAL BY BIDDERS

The following documents shall be submitted by the Bidder in accordance with the Instructions to Bidders, at the time and place stipulated in the Invitation for Bid:

a) A completed and signed Bid Form.

b) All other information required to be submitted with the Bid Form

c) Bid Security conforming to the requirements of the Instructions to Bidders

UOSA CONTRACT L2 GAC Page 3 of 7 SEPTEMBER 2026

7. LUMP SUM BID

The Bidder hereby offers as its Lump Sum Bid, based upon its own estimate of quantities and determination of costs, and agrees to accept as full payment for the performance of all Work included in the Project and as required by the Contract Documents.

8. TOTAL BASE BID

The Total Base Bid shall be the sum of the Phase 1 Lump Sum Bid, the Phase 2 Lump Sum Bid, and the Bid Allowance. The Bidder shall enter the Phase 1 Lump Sum Bid, Phase 2 Lump Sum Bid, Bid Allowance in the table below and in accordance with instructions:

PART A - BID PRICE

The following form must be typewritten or completed in ink.

Lump Sum Prices. For each Contract Item seeking Lump Sum Prices, provide the Bidder’s proposed Lump Sum Price in words and in figures in the spaces provided.

Discrepancy or Mathematical Error. In the event of a discrepancy between any amount shown in numerical figures and in words, the amount expressed in words will govern. In the event of a discrepancy between a Unit Price and the Computed Total Price for a Contract Item, the Unit Price will govern. Finally, in the event that the Computed Total Price for each Contract Item, when added to any Allowances, do not equal the Total Bid Price, the Computed Total Price for each Contract Item will govern.

UOSA CONTRACT L2 GAC Page 4 of 7 SEPTEMBER 2026

CONTRACT

ITEM NO. DESCRIPTION OF WORK ESTIMATED

QUANTITY

UNIT

PRICE TOTAL PRICE

Total Lump Sum Bid to Complete Phase 1 of CONTRACT L2 GAC as Specified in Bid Documents

L.S.

N/A

Dollars

Total Lump Sum Bid to Complete Phase 2 of CONTRACT L2 GAC as Specified in Bid Documents

Dollars

Bid Allowance for Concrete Repairs, if required and authorized by Owner, for additional work beyond what is provided under contract

Twenty Five Thousand Dollars

$25,000.00

Total Bid Price Amount for All Contract Items (Sum of Contract Items above)

Dollars and

Cents

Note: The Total Bid Price must include Bid Items 1, 2, and 3. The Contractor shall not proceed with Phase 2 Work unless authorized in writing by UOSA following completion and review of the Phase 1 pilot results. Bid Item 3 is an allowance for concrete repairs and shall only be used when authorized by UOSA in accordance with the Contract Documents.

PART B – CERTAIN AGREEMENTS BY BIDDER

The undersigned Bidder hereby represents, warrants, covenants, and agrees as follows:

1. This Bid is made without any understanding or agreement with any other individual, partnership, corporation or other entity making a Bid for the same purpose and is in all respects fair and without collusion or fraud.

2. All proposed goods and services shall satisfy fully the requirements of the Contract Documents.

3. The Bidder is financially solvent and sufficiently experienced and competent to perform the Work.

UOSA CONTRACT L2 GAC Page 5 of 7 SEPTEMBER 2026

4. The Bidder has been provided the opportunity to carefully examine the site of the Work and, from its own investigations, is satisfied as to the nature and location of the Work; the character, quality and quantity of existing materials and conditions likely to be encountered; the kind and extent of equipment and other facilities needed for the performance of the Work; the general and local conditions; and all other items which reasonably may be expected to affect the Work or its performance.

5. The Bidder: (a) has carefully reviewed and thoroughly understands the scope, terms and conditions set forth in the Contract Documents; (b) has made due inquiry of UOSA as to the existence of any Addenda issued in connection with this IFB; (c) is satisfied that it has received any and all such Addenda and the Bidder has taken the contents thereof into consideration when preparing and submitting this Bid; and (d) accepts full and complete responsibility for the receipt of any and all such Addenda and waives any claim of mistake or error in its Bid based upon its failure, in fact, to have reviewed all applicable Addenda.

6. The undersigned Bidder acknowledges and agrees that UOSA reserves the right to cancel this solicitation, reject any or all Bids, and/or waive any informality in a Bid in the interests of UOSA. Except as set forth in the Instructions to Bidders, this Bid, once submitted, may not be withdrawn for a period of 120 Days from the date fixed for opening of the Bids.

7. Phase 1 shall be considered successful when the pilot installation is completed in accordance with the Contract Documents, accepted by UOSA, and demonstrates that the proposed materials, installation methods, sequencing, tolerances, and workmanship are suitable for implementation during Phase 2. Successful completion shall also require that deficiencies, required concrete repairs, field modifications, or corrective actions identified during Phase 1 are documented and resolved to UOSA’s satisfaction. Phase 2 Work shall not proceed unless authorized in writing by UOSA following review of the Phase 1 pilot results.

PART C – BIDDER’S ACKNOWLEDGEMENT

If notice of acceptance of this Bid is given to the undersigned Bidder within 90 days after the date of opening of Bids (or such longer period as may be agreed upon by all parties), the undersigned Bidder covenants and agrees to (i) execute and deliver to UOSA a Contract in the prescribed form and will submit the required Contract security and…