Addendum No. One (Sealed).pdf

Harris County Municipal Utility District No. 525

Water Plant No. 1 Expansion to serve

Sundance Cove

ADDENDUM NO. ONE

August 25, 2026

1. Reference to Bid Proposal:

Replace the Bid Proposal with the following revised proposal, dated August 25, 2026, marked Addendum No. One.

Site Work Bid Item No. 1 has been added.

Water Plant Bid Item No. 4 has been revised.

2. Reference to Bid Date:

The Bid Date has been changed from Wednesday, August 26, 2026 at 3:00 p.m. to Wednesday, September 9, 2026 at 3:30 p.m.

Please be reminded that all bids are to be submitted to the office of the Engineer for the District, EHRA, 10011 Meadowglen Lane, Houston, Texas or electronically via www.civcastusa.com.

08/25/2026 http://www.civcastusa.com/

EHRA

Master Specifications Bid Proposal

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Date:

Bid of , an individual proprietorship/a corporation organized and existing under laws of the State of Texas/a partnership consisting of , for construction of:

Harris County Municipal Utility District No. 525 Water Plant No. 1 Expansion to serve

Sundance Cove – ADDENDUM NO. ONE

To: Harris County Municipal Utility District No. 525

Gentlemen:

The undersigned bidder has carefully examined the Instruction to Bidders, this bid, the form on Contract and its General and Special Conditions, the Technical Specifications, and the Plans for the work herein above described and referred to in the "Invitation to Bid", and also the site of the work and will provide all necessary labor, superintendence, machinery, equipment, tools, materials, services and other means of construction to complete all the work upon which he bids, as provided by the Special Conditions of the Contract, the Technical Specifications and shown on the plans, and binds himself on acceptance of his bid to execute a Contract, bonds and insurance, according to the prescribed forms, for performing and completing the said work within the time stated, and for maintaining same as required for the following prices:

If awarded the Contract, I/we will execute Contract on the Standard Forms of Agreement and furnish satisfactory insurance certificate and satisfactory performance and payment bonds in accordance with the Bid Documents.

Bidder acknowledges receipt of the following addendum(s):

No. 1: No. 2: No. 3: No. 4: No. 5: No. 6:

(Bidder-Company Name) (Print or Type Name)

(Signature) (Title)

It is understood that the Contractor is subject to a deduction from payments due him if the work is not completed within the specified number of calendar days. This deduction will be based on the schedule included in the "Special Conditions of the Agreement" which is a part of the Bid and Contract Documents.

ITEM DESCRIPTION UNIT QUANTITY UNIT PRICE AMOUNT

1. Restoration of Access Road to Equal or Better Conditions. Quantity reflects a 10 CY/truck load assumption. (ONLY AS AUTHORIZED AND

APPROVED BY ENGINEER IN WRITING).

TL 10 $____________ $______________

2. Construct all Site Work Preparation including, but not limited to, Clearing, Grubbing, Stripping and Proof Rolling, Etc. (Complete in place and Fully Operational and Functional Including all Miscellaneous and Required Components and Appurtenances; as per the Approved Construction Drawings and Details, Contract Documents, General Notes, General and Special Conditions, Technical Specifications and any Addenda)

AC 1 $____________ $______________

3. Final Site Clean Up and Grading (including hydro-mulch seeding, inclusive of waterings, drainage swale, rip rap, fertilizing, mowing, over-seeding and maintenance until a stand of Bermuda grass has been established and all approving agencies have inspected and accepted the project after the one-year maintenance period has been successfully satisfied)

LS 1 $____________ $______________

TOTAL SITE WORK: $___________________

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID PROPOSAL - ADDENDUM NO. ONE

SITE WORK

EHRA

August 25, 2026

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ADDENDUM NO. ONE

Quantities reflected on this Bid Proposal were tabulated from a NON APPROVED set of Construction Drawings

4. Construct a Fully Functional and Operational 212,361 Gallon Powder Coated Bolted Steel Ground Storage Tank (Complete in place and Fully Operational and Functional Including all Miscellaneous and Required Components and Appurtenances, Testing; as per the Approved Construction Drawings and Details, Contract Documents, General Notes, General and Special Conditions, Technical Specifications and any Addenda)

EA 1 $____________ $______________

5. Disinfection of Tanks as per AWWA and TCEQ Standards; Including a Minimum of Three (3) Water Bacteriological Tests per Tank.

LS 1 $____________ $______________

6. Reinforced Concrete Foundations (Including but not limited to ring foundation for Ground Storage Tank and Splash Pads)

LS 1 $____________ $______________

7. Modification to Existing Water Plant Yard Piping System, Valves, Fittings and Appurtenances and Painting of Above Ground Piping (Complete in place and Fully Operational and Functional Including all Miscellaneous and Required Components and Appurtenances; as per the Approved Construction Drawings and Details, Contract Documents, General Notes, General and Special Conditions, Technical Specifications and any Addenda)

LS 1 $____________ $______________

8. Modification to Existing Chlorine Gas Disinfection System. (Complete in place and Fully Operational and Functional Including all Miscellaneous and Required Components and Appurtenances; as per the Approved Construction Drawings and Details, Contract Documents, General Notes, General and Special Conditions, Technical Specifications and any Addenda)

LS 1 $____________ $______________

TOTAL WATER PLANT: $___________________

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID PROPOSAL - ADDENDUM NO. ONE

WATER PLANT

EHRA

August 25, 2026

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ADDENDUM NO. ONE

9. Modification to Existing Water Plant Electrical System (Complete in place and Fully Operational and Functional Including all Miscellaneous and Required Components and Appurtenances; as per the Approved Construction Drawings and Details, Contract Documents, General Notes, General and Special Conditions, Technical Specifications and any Addenda)

LS 1 $____________ $______________

TOTAL ELECTRICAL: $___________________

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID PROPOSAL - ADDENDUM NO. ONE

ELECTRICAL

EHRAAugust 25, 2026 P:\151-031-12-01\CPS\WP 1 Expansion (rebid)\Contract Docs\Bid Docs\Bid Proposal - Sundance WP Exp - Addendum No. One

ADDENDUM NO. ONE

10. Enforcement of TPDES Requirements and General Source Controls; Including Filing NOI and NOT, Jobsite Postings, Regular Inspections, Filing Reports, etc. as Required for SWPPP Compliance for Duration of Construction Project; Contractor is to Practice Good Housekeeping Rules at All Times During Construction and is Responsible to Repair All Damage to the Control Measures as a Result of their own Construction Activities; a thirdy party will be Responsible for Complete SWPPP Compliance for the Developer and for the Repair of Any and All Damage to the Control Measures Caused by Parties Other than the Contractor

LS 1 $____________ $______________

TOTAL STORM WATER POLLUTION PREVENTION PLAN: $___________________

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID PROPOSAL - ADDENDUM NO. ONE

STORM WATER POLLUTION PREVENTION PLAN

EHRA

August 25, 2026

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ADDENDUM NO. ONE

ITEM DESCRIPTION AMOUNT

Site Work $_____________________

Water Plant $_____________________

Electrical $_____________________

Mobilization, Certificates of Insurance and Performance, Payment and Maintenance Bonds as Indicated in the Contract Documents (maximum bid $100,000.00)

Construction Permits $_____________________

One-Time Only Construction Staking Service to be performed by Edminster, Hinshaw, Russ & Associates, dba, EHRA, as Indicated in the Special Conditions section of the Contract Documents. All additional staking is at the expense of the Contractor.

(minimum bid $6,000.00)

Post Construction Topographic Verification, As-Built Survey and Record Drawing Preparation to be performed by Edminster, Hinshaw, Russ & Associates, dba, EHRA, as Indicated in the Special Conditions section of the Contract Documents and in Accordance with Harris County Public Infrastructure Department (HCPID) Standards, Rules and Regulations and signed by Registered Professional Engineer. (minimum bid $4,000.00)

TOTAL AMOUNT BID: $____________________

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID SUMMARY

EHRA

August 25, 2026

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ADDENDUM NO. ONE

Site Work Contractor:

Electrical Contractor:

Surface Preparation and Coatings Application Contractor:

NOTE: This portion MUST be filled out and submitted with the Contractor's Bid. Failure to provide this information will result in disqualification of bid.

HARRIS COUNTY

MUNICIPAL UTILITY DISTRICT NO. 525

WATER PLANT NO. 1 EXPANSION (P-4975)

BID PROPOSAL - ADDENDUM NO. ONE

EQUIPMENT SUPPLIER AND SUBCONTRACTOR LIST

Subcontractor List (must be completed):

EHRA

August 25, 2026

P:\151-031-12-01\CPS\WP 1 Expansion (rebid)\Contract Docs\Bid Docs\Bid Proposal - Sundance WP Exp - Addendum No. One

ADDENDUM NO. ONE

EHRA

Master Specifications Bid Proposal

P:\151-031-12-01\CPS\WP 1 Expansion (rebid)\Contract Docs\Bid Docs\Bid Proposal - Addendum No. One.doc

It is also understood that in the event the successful bidder fails to enter into the Contract and to furnish a Performance Bond and Payment Bond in the amount of 100 percent of the contract for all parts of the work, he will forfeit the Cashier's Check, Certified Check, or Bidder's Bond, as provided in the Specifications.

The undersigned proposes, if awarded the contract, to begin work within seven (7) calendar days from written notice to commence work is given by the Engineer, and to Substantially Complete the work within _____________ (___) calendar days from the date of the written notice to commence work.

The quantities reflected in this Bid Proposal were tabulated from a set of drawings issued for bidding purposes only. The final quantities constructed may vary slightly from the bid quantities.

This bid proposal shall be considered part of the Contract.

Respectfully yours, (Bidder-Company Name) (Address - Physical)

(Signature) (City) (County)

(Print or Type Name) (State) (Zip Code)

(Title) (Address - Mailing)

(Name of Surety) (City) (State) (Zip Code)

(Phone)

ATTEST

(Fax)

Seal, if Bidder is a Corporation (E-mail)