Contract Provisions_Demery Hill Vault Retrofit_signed-secure.pdf

Contract Provisions

For Construction of:

Demery Hill Vault Retrofit

October 2026

CITY OF SAMMAMISH

PUBLIC WORKS DEPARTMENT

801 228TH AVENUE SE

SAMMAMISH, WA 98075

Notice to Plan Holders Prospective bidders shall submit all questions regarding the Contract Documents through BidNet. Questions will be addressed by the Contracting Agency via written response issued through BidNet. Only written responses published through BidNet shall be considered official.

The following are assigned to answer all questions regarding these bid documents:

Audrie Starsy, Public Works Director City of Sammamish 801 228th Ave SE, Sammamish, WA 98075

Lei Wu, City Engineer City of Sammamish 801 228th Ave SE, Sammamish, WA 98075

Matt Eyer, Senior Stormwater Program Manager City of Sammamish 801 228th Ave SE, Sammamish, WA 98075

Jayden Abrams, Project Engineer City of Sammamish 801 228th Ave SE, Sammamish, WA 98075

John Forba, PE PACE Engineers 11255 Kirkland Way, Suite 300, Kirkland WA 98033

Certificate of Engineer:

The Special Provisions and drawings contained herein have been prepared by or under the direction of the undersigned, whose seal as a Professional Engineer licensed to practice in the State of Washington, is affixed below.

John Forba, P.E.

Project Engineer

Date: 2026.10.20 14:59:01-07'00'

**The signature of the City Engineer n these Contract Provisions shall serve as written approval for all variations to the Public Works Standards contained within this project as required by PWS. 10.170.

10/22/2026

10/23/2026

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DEMERY HILL VAULT RETROFIT

CITY OF SAMMAMISH i OCTOBER 2026

TABLE OF CONTENTS

PART 1 PROPOSAL INTRODUCTION

NOTICE TO CONTRACTORS

BIDDER’S CHECKLIST

PART 2 PROPOSAL

PROPOSAL 3

SCHEDULE OF PRICES

BID SECURITY FORM

ACKNOWLEDGEMENT OF RECEIPT OF ADDENDA

BIDDER INFORMATION AND SIGNATURE

NON-COLLUSION AND DEBARMENT AFFIDAVIT

MINIMUM WAGE AFFIDAVIT FORM

STATEMENT OF BIDDER’S QUALIFICATIONS

RESPONSIBLE BIDDER CRITERIA

SUBCONTRACTOR LIST

CERTIFICATION OF COMPLIANCE WITH WAGE PAYMENT STATUTES FORM

PART 3 CONTRACT DOCUMENT FORMS

CONTRACT AGREEMENT

LABOR AND MATERIAL PAYMENT BOND

PERFORMANCE BOND TO THE CITY OF SAMMAMISH

PART 4 SPECIAL PROVISIONS

DIVISION 1 General Requirements SECTION 1-01 Definitions and Terms SECTION 1-02 Bid Procedures and Conditions SECTION 1-03 Award and Execution of Contract SECTION 1-05 Control of Work SECTION 1-06 Control of Materials SECTION 1-07 Legal Relations and Responsibilities to the Public SECTION 1-08 Prosecution and Progress SECTION 1-09 Measurement and Payment

DIVISION 2 Temporary Features

DIVISION 3 Earthwork SECTION 3-01 Clearing, Grubbing, and Roadside Cleanup SECTION 3-02 Removal of Structures and Obstructions SECTION 3-04 Haul SECTION 3-06 Subgrade Preparation SECTION 3-07 Structure Excavation

DIVISION 4 Aggregates and Bases SECTION 4-05 Ballast and Crushed Surfacing

DIVISION 5 Surface Treatments and Pavements SECTION 5-04 Hot Mix Asphalt

CITY OF SAMMAMISH ii OCTOBER 2026

DIVISION 7 Drainage Structures, Storm Sewers, Sanitary Sewers, Water Mains, and Conduits

SECTION 7-01 Drains SECTION 7-04 Storm Sewers SECTION 7-05 Manholes, Inlets, Catch Basins, and Drywells SECTION 7-07 Cleaning Existing Drainage Structures SECTION 7-08 General Pipe Installation Requirements SECTION 7-10 Storm Sewer Bypass Plan

DIVISION 8 Miscellaneous Construction SECTION 8-01 Erosion Control and Water Pollution Control SECTION 8-02 Roadside Restoration SECTION 8-13 Monument Cases

DIVISION 9 Materials SECTION 9-03 Aggregates SECTION 9-05 Drainage Structures and Culverts SECTION 9-14 Erosion Control and Roadside Planting

CITY OF SAMMAMISH 1-1 OCTOBER 2026

PART 1

PROPOSAL INTRODUCTION

Print Contractor Name

CITY OF SAMMAMISH OCTOBER 2026

1-2

1-3

NOTICE TO CONTRACTORS

CITY OF SAMMAMISH

Bids will be received by the City until 2:00 PM (local time) on Thursday, December 3rd, 2026, for furnishing the necessary labor, materials, equipment, tools, and guarantees thereof to construct the Demery Hill Vault Retrofit. Bids received after this time and date listed above will not be considered.

Solicitation, bidding, bid results, and all communications relating to this Invitation to Bid (ITB) will be managed electronically through Bidnet Direct. Vendors interested in viewing the ITB, project plans, specifications, addenda, and/or submitting bids for this Project must be registered in the Bidnet system. Bids are to be submitted only in the form provided in the project Bidnet posting.

All bids must be accompanied by a bid proposal guaranty in the amount of five percent (5%) of the total bid, payable to the City of Sammamish.

Because bids are submitted electronically through Bidnet, the bid proposal guaranty shall be submitted electronically in the form of an electronic bid bond (e-bond) or a scanned copy of a properly executed bid bond issued by a surety authorized to do work in the State of Washington.

The City reserves the right to require the original executed bid bond from the apparent low bidder prior to award.

PROJECT DESCRIPTION

This Work shall consist of clearing and grubbing, demolition, roadway excavation, underground structures, underground water quality vault, stormwater conveyance, paving with HMA, erosion control, traffic control, roadside restoration.

Questions must be submitted through the posting on Bidnet and adhere to the timelines provided on Bidnet. Any oral communications will be considered unofficial and non-binding on the City. Questions will be answered in writing and posted on Bidnet by the timelines provided on Bidnet. It is the responsibility of individual firms to check Bidnet for any addenda or questions and answers related to this project.

The City of Sammamish, in accordance with the provisions of Title VI of the Civil Rights Act of 1964 (78 Stat. 252, 42 U.S.C. 2000d to 2000d-4) and the Regulations, hereby notifies all bidders that it will affirmatively ensure that any contract entered into pursuant to this advertisement, disadvantaged business enterprises will be afforded full and fair opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color, or national origin in consideration for an award.

Financing for this Project will be provided by the City of Sammamish. The City of Sammamish expressly reserves the right to reject any or all bids and to waive minor irregularities or informalities and to further make award of the Project to the lowest responsive, responsible bidder as it best serves the interest of the

City.

Amber Anderson, City Clerk

1-4

DATES OF PUBLICATIONS

This Invitation to Bid will be posted and managed through Bidnet, and be solicited as follows:

Daily Journal of Commerce …………………………October 22nd, 2026 & October 29th, 2026 Seattle Times …………………………………………. October 22nd, 2026 & October 29th, 2026 Office of Minority & Women's Business Enterprises (OMWBE) ……...... October 26th, 2026

1-5

BIDDER’S CHECKLIST

1. REQUIRED FORMS

The Bidder shall submit the following forms as part of the proposal. The forms must be executed in full and submitted with the Proposal.

Proposal

Schedule of Prices

Bid Security Form

Acknowledgement of Receipt of Addenda

Bidder Information and Signature

Minimum Wage Affidavit Form

Non-Collusion Declaration

The two lowest bidders shall submit the following forms within 2 business days after the bid opening. Failure to submit these forms may result in the Contracting Agency refusal to accept the Bid.

Statement of Bidder’s Qualifications

Responsible Bidder Criteria

Effective July 23, 2017, before award of a public works contract, the bidder under consideration for award of a public works project must submit to the public agency a sworn statement that they have not willfully violated wage payment laws within the past three years in order to be considered a responsible bidder. (See RCW 39.04.350 as modified by SSB 5301, Laws of 2017, ch. 258.)

Certificate of Compliance with Wage Payment Statutes

2. AGREEMENT FORMS

The following forms (a., b., and c.) are to be executed and the following Certificates of Insurance (d. and e.) are to be provided after the Contract is awarded and prior to Notice to Proceed.

a. Agreement

b. Performance Bond

c. Labor and Material Payment Bond

d. Certificate of Insurance

e. City of Sammamish Business License

1-6

DEMERY HILL VAULT RETROFIT PART 2

CITY OF SAMMAMISH PROPODAL

2-1 OCTOBER 2026

PART 2

PROPOSAL

CITY OF SAMMAMISH PROPOSAL

2-2 OCTOBER 2026

2-3 OCTOBER 2026

Honorable Mayor and Council City of Sammamish 801 228th Avenue SE Sammamish, WA 98075

The work in this contract includes clearing and grubbing, demolition, roadway excavation, underground structures, underground water quality vault, stormwater conveyance, paving with HMA, erosion control, traffic control, and roadside restoration at the intersection of NE 8th St and 218the Pl NE , all in accordance with the Contract Plans, Contract Provisions, and the Standard Specifications.

All bidding and construction shall be performed in compliance with the Notice to Contractors, Bid Proposal, Plans, Specifications, and Contract for this project and any addenda issued thereto which are on file at the office of the City Clerk, City Hall, City of Sammamish, Washington.

It is understood herein that after the date and hour set for the opening of bids, no Bidder may withdraw its Proposal, unless the award of the Contract is delayed for a period exceeding sixty

(60) consecutive calendar days.

The undersigned has examined the site(s), local conditions, Addenda, Contract Provisions, Plans, and all applicable laws and ordinances covering the Work contemplated. In accordance with the terms, provisions, and requirements of the foregoing, all of their respective terms and conditions are incorporated herein by this reference and the following unit and lump sum prices are tendered as an offer to perform the Work and furnish the equipment, materials, appurtenances, and guarantees, complete in place, in good working order.

The undersigned freely states that it is familiar with the provisions of the competitive bidding statutes of the State of Washington, and specifically the provisions of RCW Chapter 9.18, and certifies that with respect to this Proposal, there has been no collusion or understanding with any other person, persons, or corporation, to prevent or eliminate full and unrestricted competition among Bidders on this Project.

The undersigned agrees that in the event of contract award, it shall employ only Contractor and Subcontractors duly licensed by the State of Washington.

The undersigned agrees that the Owner reserves the right to reject any or all bids and to waive any minor informalities.

The undersigned hereby agrees that the Owner reserves the right to award the contract to the lowest responsible, responsive bidder whose Proposal is in the best interest of the Owner. The Owner will determine at the time of award of the Project which additives, if any, will be included in the Contract.

The undersigned agrees that the Owner is authorized to obtain reports from all references included herein.

I, the undersigned, hereby certify, under penalty of perjury under the laws of the State of Washington, on behalf of the firm identified below that, to the best of my knowledge and belief, this firm has NOT been determined by a final and binding citation and notice of assessment

2-4 OCTOBER 2026

issued by the Washington State Department of Labor and Industries or through a civil judgment entered by a court of limited or general jurisdiction to have willfully violated, as defined in RCW 49.48.082, any provision of RCW chapters 49.46, 49.48, or 49.52 within three (3) years prior to this project’s bid solicitation date.

Very Truly Yours, Print Company Name

By (Print Name)

By (Signature)

Title

Date Place of Execution

2-5 OCTOBER 2026

SCHEDULE OF PRICES

NOTE:

• Unit prices for all items, all extensions, and the total amount bid must be shown.

• The project must be in its entirety, including all bid items and any bid additive bid items as specifically listed in the Proposal, in order to be considered a responsive bid.

• Where conflict occurs between the unit price and the total amount named for any item the unit price shall prevail, and totals shall be corrected to conform thereto.

• All entries must be typed or printed and entered in ink. Award of the Contract shall be based on the lowest, responsive bid.

(Standard Specifications and Special Provision references shown are provided for information only to assist bidders in the preparation of their proposal. Bidders shall not rely on this information and must thoroughly examine the contract requirements during the preparation of their proposal.)

Item No.

Spec. No.

Item With Unit Priced Bid Unit Qty Unit Price Amount

1 1-04.4 Minor Changes FA 1 $ 60,000.00 $ 60,000.00

2 1-05.18 Construction Surveying LS 1 $ $

3 1.07.15(1) SPCC Plan LS 1 $ $

4 2-01 Mobilization (5%) LS 1 $ $

5 2-04 (SP)

Temporary Traffic Control (Min. Bid $20,000)

LS 1

6 3-01 Clearing and Grubbing w/Disposal

LS 1 $ $

7 3-02 (SP)

Removal of Structures and Obstructions

LS 1 $ $

8 3-07 (SP)

Structure Excavation Class A, Inc. Haul

CY 255 $ $

9 3-07 (SP)

Shoring or Extra Excavation Class A

LS 1 $ $

10 3-07 (SP)

Shoring or Extra Excavation Class B

SF 330 $ $

11 3-07 (SP) Potholing EA 2 $ $

12 3-07 (SP) Additional Dewatering FA 1 $ 50,000.00 $ 50,000.00

13 4-05 (SP)

Crushed Surfacing Top Course

TN 15

14 4-05 (SP)

Crushed Surfacing Base Course

TN 250 $ $

15 5-04 (SP)

Planing Bituminous Pavement

SY 275 $ $

16 5-04 (SP) HMA CL ½” PG-58-22* TN 65 $ $

17 7-01 (SP) Drain Pipe 4” Diam. LF 12 $ $

18 7-01(SP) Underdrain Pipe 4” Diam. LF 80 $ $

19 7-04 (SP)

Corrugated Polypropylene Storm Sewer Pipe 12” Diam

LF 35

2-6 OCTOBER 2026

Item No.

Spec. No.

Item With Unit Priced Bid Unit Qty Unit Price Amount

20 7-05 (SP)

Flow Splitting Manhole w/Baffle Wall 72” Diameter

EA 1 $

21 7-05 (SP)

Connection to Existing Drainage Structure/Pipe

EA 3 $

22 7-05 (SP)

Hydrodynamic Separator 72” Diameter

EA 1 $

23 7-05 (SP) Treatment Vault LS 1 $ $

24 7-08 (SP)

Removal/Replacement of Unsuitable Material Inc. Haul

CY 35 $

25 7-10 (SP) Storm Sewer Bypass LS 1 $ $

26 8-01 (SP)

Erosion Control and Water Pollution Prevention

LS 1 $

27 8-02 (SP) Roadside Restoration FA 1 $ 7,500.00 $ 7,500.00

28 8-13 (SP)

Remove and Reset Monument

EA 1 $ $

SUBTOTAL $

TOTAL CONSTRUCTION COST $

*Note: Contractor is advised to be familiar with Washington State Revenue Rule 170. See Special Provisions 1-07.2

2-7 OCTOBER 2026

BID SECURITY FORM

of as principal, and the a corporation duly organized under the laws of the state of , and authorized to do business in the State of Washington, as surety, are held and firmly bound unto the State of Washington in the full sum of five (5) percent of the total amount of the bid proposal of said principal for the work hereinafter described, for the payment of which, well and truly to be made, we bind our heirs, executors, administrators and assigns, and successors and assigns, firmly by these presents.

The condition of this bond is such, that whereas the principal herein is herewith submitting his or its sealed proposal for the following highway construction, to wit:

said bid and proposal, by reference thereto, being made a part hereof.

NOW, THEREFORE, If the said proposal bid by said principal be accepted, and the contract be awarded to said principal, and if said principal shall duly make and enter into and execute said contract and shall furnish a contract bond as required by the

Department of Transportation and RCW 39.08 et. seq. then this obligation shall be null and void, otherwise it shall remain and be in full force and effect.

IN TESTIMONY WHEREOF, The principal and surety have caused these presents to be signed and sealed this ________________________ day of

(Principal)

(Surety)

(Attorney-in-fact)

2-8 OCTOBER 2026

ACKNOWLEDGEMENT OF RECEIPT OF ADDENDA

By signing below, Bidder acknowledges receipt and understanding of the following Addenda to the Contract Documents:

Addendum No.

Date of Receipt Signature

NOTE:

Failure to acknowledge receipt of Addenda may be considered as an irregularity in the Bid Proposal and the City reserves the right to determine whether the Bid will be disqualified.

2-9 OCTOBER 2026

BIDDER INFORMATION AND SIGNATURE

The Bidder proposes to accept as full payment for the Work proposed herein, the amount computed under the provisions of the Contract Provisions. The undersigned Bids for the following described Project:

The party by whom this Bid is submitted and by whom the Contract will be entered into, in the event the award is made to this party, is:

Contractor (Firm Name) Signature

Address Name (Print) & Title

Phone Number Date of Signing

Contractor’s Washington State (Indicate whether contractor is

License Number partnership, joint venture, corporation, or sole proprietorship)*

*If Bidder is a corporation, write State of Incorporation under signature. If partnership, give full names of all partners.

The name of the President, Treasurer, and/or Manager of the Bidding corporation, or the names of all persons and parties interested in this Bid as partners or principals, are as follows:

Name Address

2-10 OCTOBER 2026

IF SOLE PROPRIETOR OR PARTNERSHIP

IN WITNESS hereto, the undersigned has set his (its) hand this __________ day of ________, 20____.

Signature of Bidder

Title

IF CORPORATION

IN WITNESS WHEREOF, the undersigned corporation has caused this instrument to be executed by its duly authorized officers this ___________ day of _________________, 20____.

Attest: ____________________________ Name of Corporation

___________________________________ by__________________________ Secretary

Sworn to me before me this ________ day of

_____________________________, 20____.

Notary Public in and for the State of Washington Residing at

NOTES:

If the Bidder is a co-partnership, give firm name under which business is transacted;

Proposal must be executed by a partner. If the Bidder is a corporation, Proposal must be executed in the corporate name by the president or vice-president (or any other corporate officer accompanied by evidence of authority to sign).

2-11 OCTOBER 2026

NON-COLLUSION AND DEBARMENT AFFIDAVIT

Failure to return this Declaration as part of the bid proposal package will make the bid nonresponsive and ineligible for award.

I, by signing the proposal, hereby declare, under penalty of perjury under the laws of the United States that the following statements are true and correct:

1. That the undersigned person(s), firm, association or corporation has (have) not, either directly or indirectly, entered into any agreement, participated in any collusion, or otherwise taken any action in restraint of free competitive bidding in connection with the project for which this proposal is submitted.

2. That by signing the signature page of this proposal, I am deemed to have signed and to have agreed to the provisions of this declaration.

2-12 OCTOBER 2026

NON-COLLUSION AFFIDAVIT

STATE OF WASHINGTON )

) ss

COUNTY OF )

being first duly sworn, on her/his oath says that the bid above submitted is a genuine and not a sham or collusive bid, or made in the interest or on behalf of any person not therein named; and she/he further says that the said bidder has not directly or indirectly induced or solicited any bidder on the above work or supplies to put in a sham bid, or any other person or corporation to refrain from bidding; and that said bidder has not in any manner sought by collusion to secure to her/himself an advantage over any other bidder or bidders.

CONTRACTOR

Subscribed and sworn to before me this day of , 20___.

Notary Public in and for the State of Washington, residing at

My commission expires:

2-13 OCTOBER 2026

MINIMUM WAGE AFFIDAVIT FORM

STATE OF WASHINGTON )

)ss

COUNTY OF KING )

I, the undersigned, having been duly sworn, deposed, say and certify that in connection with the performance of the work of this project, I will pay each classification of laborer, workman, or mechanic employed in the performance of such work; not less than the prevailing rate of wage or not less than the minimum rate of wages as specified in the principal contract; that I have read the above and foregoing statement and certificate, know the contents thereof and the substance as set forth therein is true to my knowledge and belief.

Name of Project

Name of Bidder's Firm

Signature of Authorized Representative of Bidder

Printed Name of Authorized Representative of Bidder

Date

I certify that I know or have satisfactory evidence that ____________________ is the person who appeared before me, and said person acknowledged that (he/she) signed this instrument and acknowledged it to be (his/her) free and voluntary act for the uses and purposes mentioned in the instrument.

Dated __________________

Notary Public in and for the State of Washington residing at ____________________

Notary (print): _____________________________

My appointment expires: ____________________

2-14 OCTOBER 2026

STATEMENT OF BIDDER’S QUALIFICATIONS

Name of Firm:

Address:

Telephone No.

Contact Person for this Project:

Number of years the Contractor has been engaged in the construction business under the present firm name, as indicated above: ______________

Gross dollar amount of work currently under contract:

Gross dollar amount of contracts currently not completed:

General character of work performed by the firm:

List all of the projects over one million dollars total of a similar nature which have been completed by the Contractor within the last five (5) years and the gross dollar amount of each project, together with the Owner’s name and phone number, and the Engineer’s name.

Project Name Amount Owner Phone Engineer’s Name

2-15 OCTOBER 2026

List five major pieces of equipment which are anticipated to be used on this project by the Contractor and note which items are owned by the Contractor and which are to be leased or rented from others:

1.

2.

3.

4.

5.

Bank Reference:

How many general superintendents or other responsible employees in a supervisory position do you have at this time, and how long have they been with the firm?

Identify who will be the general superintendent or project superintendent on this Project and list the number of years with the firm.

Have you changed bonding company within the last three (3) years?

If so, why?

Have you ever been sued or engaged in arbitration by the Owner or have you ever sued or demanded arbitration from an Owner on any public works contract for a special utility district, private utility company, municipality, county or state government? __________ For what reason?

Disposition of case, if settled:

Do you have any outstanding payments due to the Department of Revenue?

If yes, explain:

Bidder agrees that the Owner shall retain the right to obtain any and all credit reports.

Yes: No

2-16 OCTOBER 2026

RESPONSIBLE BIDDER CRITERIA

In accordance with RCW 39.04, before award of a Public Works Contract, a Bidder must meet the following responsibility criteria to be considered a responsible Bidder and qualified to be awarded a Public Works Project. The Bidder must:

At the time of Bid submittal, have a certificate of registration in compliance with chapter

18.27 RCW

1. Be a registered contractor and-for plumbing, elevator, and electrical contractors-have a valid license.

2. Have a current state unified business identifier (UBI) number

3. If applicable, have industrial insurance coverage for the Bidder’s employees working

Washington as required in Title 51 RCW

4. If applicable, have an employment security department number as required in Title

50 RCW

5. If applicable, have a state excise tax registration number as required in Title 82 RCW

6. Not be disqualified from Bidding on any Public Works Contract under RCW

39.06.010 or 39.12.065(3)

7. Not have any apprenticeship violations, if applicable

8. Certify through a sworn statement or an unsworn declaration under penalty of perjury that they are not a willful violator of labor laws in reference to RCW 49.48 within the past three years. MRSC has developed a model statement to satisfy this requirement.

9. Have received training, provided by the Department of Labor and Industries or by a provider whose curriculum has been approved by L&I, on the requirements related to public works and prevailing wages. However, bidders that have completed three or more public works projects and maintained a valid business license in Washington for at least three years are exempt from this requirement.

In accordance with RCW 39.06, a Public Works Contractor must verify responsibility criteria for each first tier Subcontractor, and a Subcontractor of any tier that hires other

Subcontractors must verify responsibility criteria for each of its Subcontractors. Verification shall include that each Subcontractor, at the time of Subcontract execution, meets the responsibility criteria and possesses an electrical contractor license, if required by RCW

39.04, or an elevator contractor license, if required by RCW 70.87. This verification requirement, as well as the responsibility criteria, must include every Public Works Contract and subcontract of every tier.

Providing the following information is MANDATORY in order to meet “Responsible Bidder” requirements. Failure to provide this information may disqualify your Bid as being “Non-

Responsive”. If your business is not required to have one of the following numbers, provide an explanation.

1. State of Washington Contractor Registration No. __________________________

2-17 OCTOBER 2026

2. State of Washington Unified Business Identifier No. _______________________

3. Employment Security Department No. __________________________________

4. State Excise Tax Registration No. ______________________________________

5. Is the payment of Worker’s Compensation (Industrial Insurance) Premiums current?

If your business does not have a Worker’s Comp account with the WA State Dept. of

Labor & Industry please explain why.

Yes

No (If No, you are not eligible to bid on this project

No Account – Explain why: ____________________________________

6. Are you disqualified from Bidding on Public Works Projects in the State of

Washington?

Yes (If Yes, you are not eligible to Bid on this Project)

No

2-18 OCTOBER 2026

SUBCONTRACTOR LIST

Failure to list subcontractors with whom the bidder, if awarded the contract, will directly subcontract for performance of the work of structural steel installation, rebar installation, heating, ventilation and air conditioning, plumbing, as described in Chapter 18.106 RCW, and electrical, as described in Chapter 19.28 RCW or naming more than one subcontractor to perform the same work will result in your bid being non-responsive and therefore void.

Subcontractor(s) with whom the bidder will directly subcontract that are proposed to perform the work of structural steel installation, rebar installation, heating, ventilation and air conditioning, plumbing, as described in Chapter 18.106 RCW, and electrical as described in Chapter 19.28 RCW must be listed below. The work to be performed is to be listed below the subcontractor(s) name.

If RCW 39.30.060 requires a proof of license, the license number of that Subcontractor is required. To the extent the Project includes one or more categories of work referenced in RCW 39.30.060, and no subcontractor is listed below to perform such work, the bidder certifies that the work will either (i) be performed by the bidder itself, or (ii) be performed by a lower tier subcontractor who will not contract directly with the bidder.

Work to be Performed

Subcontractor Name

Address

Phone No. State Contractor's License No

Work to be Performed

Subcontractor Name

Address

Phone No. State Contractor's License No *Bidders are notified that it is the opinion of the enforcement agency that PVC or metal conduit, junction boxes, etc., are considered electrical equipment and therefore considered part of the electrical work, even if the installation is for future use and not wiring or electrical current is connected during the project.

2-19 OCTOBER 2026

CERTIFICATION OF COMPLIANCE WITH WAGE PAYMENT STATUTES FORM

Before award of a public works contract, the bidder under consideration for award of a public works project must submit to the public agency a sworn statement that they have not willfully violated wage payment laws within the past three years in order to be considered a responsible bidder. (See RCW 39.04.350 as modified by SSB 5301, Laws of 2017, ch. 258.)

CERTIFICATE OF COMPLIANCE WITH WAGE PAYMENT STATUTES

The bidder hereby certifies that, within the three-year period immediately preceding the bid solicitation date, the bidder is not a “willful” violator, as defined in RCW 49.48.082, of any provision of Chapters 49.46, 49.48, or 49.52 RCW, as determined by a final and binding citation and notice of assessment issued by the Department of Labor and Industries or through a civil judgement entered by a court of limited or general jurisdiction.

I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct.

Bidder’s Business Name

Signature of Authorized Official*

Printed Name

Date City State

Check One:

Sole Proprietorship Partnership Joint Venture Corporation

State of Incorporation, or if not a corporation, State where business entity was formed:

If a co-partnership, give firm name under which business is transacted:

*If a corporation, proposal must be executed in the corporate name by the president or vice-president (or any other corporate officer accompanied by evidence of authority to sign). If a co-partnership, proposal must be executed by a partner.

2-20 OCTOBER 2026

CONTRACT DOCUMENT FORMS

DEMERY HILL VAULT RETROFIT PART 3

CITY OF SAMMAMISH CONTRACT DOCUMENT FORMS

3-1 OCTOBER 2026

PART 3

3-2 OCTOBER 2026

3-3 OCTOBER 2026

CONTRACT AGREEMENT

THIS AGREEMENT, made and entered into this __________ day of ___________, 20____. by and between THE CITY OF SAMMAMISH, Washington, a municipal corporation of the State of Washington, hereinafter referred to as "CITY" and _________________________________, hereinafter referred to as "CONTRACTOR."

WITNESSETH:

1) The Contractor shall within the time stipulated, (to-wit: within _____ working days from date of commencement hereof as required by the Contract, of which this agreement is a component part) perform all the work and services required to be performed, and provide and furnish all of the labor, materials, appliances, machines, tools, equipment, utility and transportation services necessary to perform the Contract, and shall complete the construction and installation work in a workmanlike manner, in connection with the City's Project, Demery Hill Vault Retrofit for improvement by construction and installation of a water quality facility and other work, all in accordance with the attached Contract Plans, Special Provisions, and Standard Specifications.

All the foregoing shall be timely performed, furnished, constructed, installed and completed in strict conformity with the plans and specifications, including any and all addenda issued by the City and all other documents hereinafter enumerated, and in full compliance with all applicable codes, ordinances and regulations of the City of Sammamish and any other governmental authority having jurisdiction thereover. It is further agreed and stipulated that all of said labor, materials, appliances, machines, tools, equipment and services shall be furnished and the construction installation performed and completed to the satisfaction and the approval of the City's Public Works Director as being in such conformity with the plans, specifications and all requirements of or arising under the Contract.

2) The aforesaid Contract, entered into by the acceptance of the Contractor's bid and signing of this agreement, consists of the following documents, all of which are component parts of said Contract and as fully a part thereof as if herein set out in full, and if not attached, as if hereto attached.

a) This Agreement

b) Instruction to Bidders

c) Project Proposal

d) Specifications

e) Maps and Plans

f) Bid

g) Advertisement for Bids

h) Special Provisions, if any

i) Addenda, if any and all modifications or changes issued pursuant to the Contract Documents.

3) If the Contractor refuses or fails to prosecute the work or any part thereof, with such diligence as will insure its completion within the time specified in this Contract, or any extension in writing thereof, or fails to complete said work with such time, or if the

3-4 OCTOBER 2026

Contractor shall be adjudged a bankrupt, or if he should make a general assignment for the benefit of his creditors, or if a receiver shall be appointed on account of the Contractor's insolvency, or if he or any of his subcontractors should violate any of the provisions of this Contract, the City may then serve written notice upon him and his surety of its intention to terminate the Contract, and unless within ten (10) days after the serving of such violation or non-compliance of any provision of the Contract shall cease and satisfactory arrangement for the correction thereof be made, this Contract, shall, upon the expiration of said ten (10) day period, cease and terminate in every respect. In the event of any such termination, the City shall immediately serve written notice thereof upon the surety and the Contractor and the surety shall have the right to take over and perform the Contract, provided, however, that if the surety within fifteen (15) days after the serving upon it of such notice of termination does not perform the Contract or does not commence performance thereof within thirty (30) days from the date of serving such notice, the City itself may take over the work under the Contract and prosecute the same to completion by Contract or by any other method it may deem advisable, for the account and at the expense of the Contractor, and his surety shall be liable to the City for any excess cost or other damages occasioned the City thereby. In such event, the City, if it so elects, may, without liability for so doing, take possession of and utilize in completing said Contract such materials, machinery, appliances, equipment, plants and other properties belonging to the Contractor as may be on site of the project and useful therein.

4) The foregoing provisions are in addition to and not in limitation of any other rights or remedies available to the City.

5) Contractor agrees and covenants to hold and save the City, its officers, agents, representatives and employees harmless and to promptly indemnify same from and against any and all claims, actions, damages, liability of every type and nature including all costs and legal expenses incurred by reason of any work arising under or in connection with the Contract to be performed hereunder, including loss of life, personal injury and/or damage to property arising from or out of any occurrence, omission or activity upon, on or about the premises worked upon or in any way relating to this Contract. This hold harmless and indemnification provision shall likewise apply for or on account of any patented or unpatented invention, process, article or appliance manufactured for use in the performance of the Contract, including its use by the City, unless otherwise specifically provided for in this Contract.

In the event the City shall, without fault on its part, be made a party to any litigation commenced by or against Contractor, then Contractor shall proceed and hold the City harmless and he shall pay all costs, expenses and reasonable attorney's fees incurred or paid by the City in connection with such litigation. Furthermore, Contractor agrees to pay all costs, expenses and reasonable attorney's fees that may be incurred or paid by City in the enforcement of any of the covenants, provisions and agreements hereunder.

6) Any notice from one party to the other party under the Contract shall be in writing and shall be dated and signed by the party giving such notice or by its duly authorized representative of such party. Any such notice as heretofore specified shall be given by personal delivery thereof or by depositing same in the United States mail, postage prepaid, certified or registered mail.

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7) The Contractor shall commence performance of the Contract no later than 10 calendar days after Contract final execution, and shall complete the full performance of the Contract not later than 45 working days from the date of commencement. For each and every working day of delay after the established day of completion, it is hereby stipulated and agreed that the damages to the City occasioned by said delay shall be a sum calculated and imposed in compliance with 2026 WSDOT Standard Specifications, Section 1-08.9, Liquidated Damages (and not as a penalty) for each such day, which shall be paid by the Contractor to the City.

8) Neither the final certificate of payment nor any provision in the Contract nor partial or entire use of any installation provided for by this Contract shall relieve the Contractor of liability in respect to any warranties or responsibility for faulty materials or workmanship. The Contractor shall be under the duty to remedy any defects in the work and pay for any damage to other work resulting therefrom which shall appear within the period of one (1) year from the date of final acceptance only that work listed in Group(s) none of the Summary of quantities in the Contract Plans, i.e. the "Federal Non-participating Items," unless a longer period is specified. However, all manufacturer's warranties or guarantees on electrical and mechanical equipment, consistent with those provided as customary trade practice, shall be assigned to the City at the time of project acceptance. The Contractor shall further be required to supply warranties or guarantees providing for satisfactory in-service operation of any mechanical and electrical equipment and related components involved in Group(s) none of the Summary of Quantities in the Contract Plans, i.e. "Federal Participating Items" for a period not to exceed 6 months following project acceptance. The City will give notice of observed defects as heretofore specified with reasonable promptness after discovery thereof, and Contractor shall be obligated to take immediate steps to correct and remedy any such defect, fault or breach at the sole cost and expense of Contractor.

9) The Contractor and each subcontractor, if any, shall submit to the City such schedules of quantities and costs, progress schedules, payrolls, reports, estimates, records and miscellaneous data pertaining to the Contract as may be requested by the City from time to time.

10) The Contractor shall furnish a surety bond or bonds as security for the faithful performance of the Contract, including the payment of all persons and firms performing labor on the construction project under this Contract or furnishing materials in connection with this Contract; said bond to be in the full amount of the Contract price as specified in Paragraph

11. The surety or sureties on such bond or bonds must be duly licensed as a surety in the State of Washington.

11) The total amount of this contract is the sum of numbers written words which includes any required Washington State Sales Tax. Payments will be made to Contractor as specified in the "Standard Specifications" of this Contract.

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IN WITNESS WHEREOF, the City has caused these presents to be signed by its City Manager and attested by its City Attorney and the Contractor has hereunto set his hand and seal the day and year first above-written.

CONTRACTOR CITY OF SAMMAMISH

President/Partner/Owner City Manager

ATTEST

Secretary City Attorney dba

Firm Name check one

Individual Partnership Corporation Incorporated in ______________________

Attention:

If business is a CORPORATION, name of the corporation should be listed in full and both President and Secretary must sign the contract, OR if one signature is permitted by corporation by-laws, a copy of the by-laws shall be furnished to the City and made a part of the contract document.

If business is a PARTNERSHIP, full name of each partner should be listed followed by d/b/a (doing business as) and firm or trade name; any one partner may sign the contract.

If business is an INDIVIDUAL PROPRIETORSHIP, the name of the owner should appear followed by d/b/a and name of the company.

3-7 OCTOBER 2026

LABOR AND MATERIAL PAYMENT BOND

We ______________________________________________________as Principal, and

_________________________________________________________as Surety, jointly and severally bind ourselves, our heirs, successors and assigns as set forth herein to CITY OF SAMMAMISH (hereinafter called the Owner) for payment of the penal sum of

________________________________________________ Dollars ($________________), lawful money of the United States in connection with the owner’s award to the Contractor of the contract for construction (“Contract”) of the following project:

THE CONDITION OF THIS OBLIGATION IS SUCH that if the Contractor shall in all respects faithfully perform all obligations and provisions in the said Contract, and pay all laborers, mechanics, and subcontractors and materialmen, taxing authorizes and all persons who supply such person or persons or subcontractors with material, equipment and supplies for the carrying on of such work, this obligation shall become null and void; otherwise, it shall remain in full force and effect, and Surety shall defend and indemnify Owner against any loss or damage due to the failure of the Principal to strictly perform all obligations of the Contract.

This bond shall be in force until completion of the Project and acceptance by the Owner, and also for such period thereafter during which the law allows claims to be filed and sued upon.

This bond is provided pursuant to and in compliance with R.C.W. Chapter 39.08, the terms and requirements of which statute are incorporated herein as though fully set forth herein.

Surety agrees that no change, extension of time, modifications or addition to the terms of the Contract, or the work to be performed thereunder, or to the specifications shall in any way affect its obligation on this bond, and it hereby waives notice thereof.

The Contractor and Surety agree that if the Owner is required to engage the services of an attorney in connection with the enforcement of this bond, each shall pay the Owner reasonable attorney’s fees incurred, with or without suit, in addition to the penal sum.

Surety certifies that it is an authorized surety bond issuer, properly authorized to transact surety business in Washington. Surety agrees to be bound by the laws of the State of Washington and subject itself to the jurisdiction of the courts of the State of Washington.

3-8 OCTOBER 2026

Executed in four original counterparts on ___________________________, 20_______

CONTRACTOR

By ___________________________________

(Title)

(Attach acknowledgment of authorized representative of Contractor).

(Name and Address of Surety)

(Name and Address of Surety’s agent for service of process in Washington if different from above)

(Telephone No. of Surety’s Washington agent)

(Attach acknowledgment) ______________________________________ Surety

By ___________________________________

Its Attorney-in-fact

Notice: Sureties must be authorized to conduct surety business in Washington and have an agent for service of process in Washington. Certified copy of Power of Attorney must be attached.

3-9 OCTOBER 2026

PERFORMANCE BOND TO THE CITY OF SAMMAMISH

We, the undersigned ____________________________________________________as principal, and _____________________________________ corporation organized and existing under the laws of the State of ________________________ as a surety corporation, and qualified under the laws of the State of Washington to become surety upon bonds of contractors with municipal corporations, as surety are jointly and severally held and firmly bound to the City of Sammamish in the penal sum of $_____________________ for the payment of which sum on demand we bind ourselves and our successors, heirs, administrators or person representatives, as the case may be.

This obligation is entered into in pursuance of the statutes of the State of Washington, the Ordinance of the City of Sammamish.

Dated at ______________, Washington, this ______________ day of ___________, 20__.

Nevertheless, the conditions of the above obligation are such that:

WHEREAS, under and pursuant to Public Works Construction Contract ___________ providing for construction of Demery Hill Vault Retrofit the principal is required to furnish a bond for the faithful performance of the contract; and WHEREAS, the principal has accepted, or is about to accept, the contract, and undertake to perform the work therein provided for in the manner and within the time set forth;

NOW, THEREFORE, if the said _______________________________________________ shall faithfully perform all of the provisions of said contract in the manner and within the time therein set forth, or within such extensions of time as may be granted under said contract, and shall pay all laborers, mechanics, subcontractors and material-men, and all persons who shall supply said principal or subcontractors with provisions and supplies for the carrying on of said work, and shall hold said City of Sammamish harmless from any loss or damage occasioned to any person or property by reason of any carelessness or negligence on the part of said principal, or any subcontractor in the performance of said work, and shall indemnify and hold the City of Sammamish harmless from any damage or expense by reason of failure of performance as specified in said contract or from defects appearing or developing in the operation of any mechanical or electrical equipment and related components provided under such contract within a period of (2) two years a after its acceptance thereof by the City of Sammamish, then his obligation shall become null and void, otherwise it shall be and remain in full force. Customary trade warranties or guarantees on electrical and mechanical equipment shall be assigned to the City of Sammamish.

Principal Surety

Signature Signature

Title Title

3-10 OCTOBER 2026

CITY OF SAMMAMISH PROPODAL

2-1 OCTOBER 2026

PART 4

SPECIAL PROVISIONS

Supplement to

WSDOT Standard Specifications

DEMERY HILL VAULT RETROFIT PART 4

CITY OF SAMMAMISH SPECIAL PROVISIONS

4-2 OCTOBER 2026

4-3 OCTOBER 2026

TABLE OF CONTENTS

DIVISION 1 General Requirements

SECTION 1-01 Definitions and Terms

SECTION 1-02 Bid Procedures and Conditions

SECTION 1-03 Award and Execution of Contract

SECTION 1-04 Scope of Work

SECTION 1-05 Control of Work

SECTION 1-06 Control of Materials

SECTION 1-07 Legal Relations and Responsibilities to the Public

SECTION 1-08 Prosecution and Progress

SECTION 1-09 Measurement and Payment

DIVISION 2 Earthwork

SECTION 2-01 Clearing, Grubbing, and Roadside Cleanup ............ Error! Bookmark not defined.

SECTION 2-02 Removal of Structures and Obstructions ... Error! Bookmark not defined.

SECTION 2-04 Haul ........................................................... Error! Bookmark not defined.

SECTION 2-06 Subgrade Preparation ............................... Error! Bookmark not defined.

SECTION 2-09 Structure Excavation ................................. Error! Bookmark not defined.

DIVISION 4 Bases

SECTION 4-04 Ballast and Crushed Surfacing .................. Error! Bookmark not defined.

SECTION 4-05 Vacant ....................................................... Error! Bookmark not defined.

SECTION 4-06 Asphalt-Treated Base (ATB)...................... Error! Bookmark not defined.

DIVISION 5 Surface Treatments and Pavements

SECTION 5-04 Hot Mix Asphalt

DIVISION 7 Drainage Structures, Storm Sewers, Sanitary Sewers, Water Mains, and Conduits

SECTION 7-04 Storm Sewers

SECTION 7-05 Manholes, Inlets, Catch Basins, and Drywells

SECTION 7-07 Cleaning Existing Drainage Structures

SECTION 7-08 General Pipe Installation Requirements

SECTION 7-10 Storm Sewer Bypass Plan

DIVISION 8 Miscellaneous Construction

SECTION 8-01 Erosion Control and Water Pollution Control

SECTION 8-02 Roadside Restoration

DIVISION 9 Materials

SECTION 9-03 Aggregates

SECTION 9-05 Drainage Structures and Culverts

SECTION 9-14 Erosion Control and Roadside Planting

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4-5 OCTOBER 2026

INTRODUCTION TO THE SPECIAL PROVISIONS

The work on this project shall be accomplished in accordance with the Standard Specifications for Road, Bridge and Municipal Construction, 2026 edition, as issued by the Washington State Department of Transportation (WSDOT) and the American Public Works Association (APWA), Washington State Chapter (hereafter “Standard Specifications”). The Standard Specifications, as modified or supplemented by the Amendments to the Standard Specifications and these Special Provisions, all of which are made a part of the Contract Documents, shall govern all of the Work.

These Special Provisions are made up of both General Special Provisions (GSPs) from various sources, which may have project-specific fill-ins; and project-specific Special Provisions. Each Provision either supplements, modifies, or replaces the comparable Standard Specification, or is a new Provision. The deletion, amendment, alteration, or addition to any subsection or portion of the Standard Specifications is meant to pertain only to that particular portion of the section, and in no way should it be interpreted that the balance of the section does not apply.

The project-specific Special Provisions are not labeled as such. The GSPs are labeled under the headers of each GSP, with the effective date of the GSP and its source. For example:

(January 4, 2016, APWA GSP) (April 1, 2019, WSDOT GSP) (June 2006, City of Sammamish)

Also incorporated into the Contract Documents by reference are:

• Manual on Uniform Traffic Control Devices for Streets and Highways, currently adopted edition, with Washington State modifications, if any

• Standard Plans for Road, Bridge and Municipal Construction, WSDOT/APWA, current edition

• KING COUNTY Department of Transportation Road Services Division 2007 Design and Construction Standards

• CITY OF SAMMAMISH 2016 Public Works Standards

Contractor shall obtain copies of these publications, at Contractor’s own…