CITY OF FOREST GROVE CONTRACT DOCUMENTS for...hard copy of the bid documents will be available ....

CITY OF FOREST GROVE

CONTRACT DOCUMENTS

for

CITY SHOP PROJECT

Project Administrated by


CONTRACT DOCUMENTS

FOR

CITY SHOP PROJECT

PREPARED BY:

Gregory H. Robertson, P.E., AICP, CFM Director of Public Works

VICINITY MAP


CONTRACT DOCUMENTS

FOR CONSTRUCTION OF

CITY SHOP

CONSISTING OF: TITLE SHEET VICINITY MAP

INDEX

INVITATION TO BID

INSTRUCTIONS TO BIDDERS

FIRST-TIER SUBCONTRACTOR DISCLOSURE FORM

PROJECT BID

BID SCHEDULE ADDENDA ACKNOWLEDGEMENT RESIDENT/NONRESIDENT BIDDER STATUS CONTRACT FOR CONSTRUCTION

PERFORMANCE BOND

PAYMENT BOND

GENERAL CONDITIONS PREVAILING WAGE RATES

SPECIAL PROVISIONS: GENERAL

G-01 WORK INVOLVED G-02 COMMENCEMENT AND COMPLETION OF WORK G-03 FAILURE TO COMPLETE WORK IN THE TIME AGREED UPON G-04 PERIODIC PAYMENTS G-05 SPECIFICATIONS AND PLANS G-06 SUBCONTRACTORS G-07 SUPERINTENDENCE G-08 WORK LIMITS G-09 SCHEDULE AND COORDINATION OF WORK G-10 TRAFFIC CONTROL AND DETOURS DURING CONSTRUCTION G-11 CONTRACTOR’S TRAFFIC AND MATERIALS DELIVERY G-12 CONSTRUCTION WATER G-13 DAMAGE TO PROPERTY G-14 PROTECTION OF WORK G-15 DISPOSAL OF MATERIALS G-16 INSPECTION AND TESTING G-17 MATERIAL AT JOB SITE G-18 CERTIFICATES OF COMPLIANCE G-19 LINES AND GRADES G-20 SANITARY FACILITIES G-21 CHANGES AND EXTRA WORK G-22 NOTICE OF POTENTIAL CLAIM G-23 CITY’S RIGHT TO WITHHOLD CERTAIN AMOUNTS G-24 ACCEPTANCE OF WORK AND FINAL PAYMENT G-25 NO WAIVER OF LEGAL RIGHTS G-26 FINAL GUARANTY G-27 CERTIFICATE OF INSURANCE G-28 EXCAVATION, TRENCHING AND SHORING G-29 STORAGE AREAS AND RESTORATION

TECHNICAL SPECIFICATIONS:

BID SCHEDULE NO. 1 - GENERAL CONSTRUCTION OF BUILDING

INVITATION TO BID

ADVERTISEMENT FOR BIDS

CITY SHOP PROJECT Sealed bids will be received by the City Recorder, City of Forest Grove, 1924 Council Street, Forest Grove, Oregon, until 10:00 a.m. on Tuesday, February 11, 2020, for the construction of Project No.: CITY SHOP PROJECT and will then be opened and publicly read aloud at 1:00 p.m. on Tuesday, February 11, 2020 at the same address. Bid proposals received after the date and time fixed for opening will not be considered. No electronic or facsimile submittals will be accepted. The City of Forest Grove (Owner) is seeking bids from general contractors to provide and assemble a fully constructed pre-engineered steel equipment storage building, measuring 40’ x 125’ to be located at 2551A 23rd Avenue in Forest Grove, Washington County, Oregon. The building will include equipment storage bays, storage space; and all work incidental thereto as set forth in the preliminary due diligence study, geotechnical engineering report, preliminary site plan, floor plan and specifications. A non-mandatory pre-bid conference will be held for this project on Tuesday, January 21, 2020 at 2:00 p.m. at the Public Works Office located at 2551A 23rd Avenue, Forest Grove, Oregon To be eligible to bid and be listed on the plan holders list, Bidders must download Bidding Documents and/or purchase them from the City of Forest Grove. Complete digital project bidding documents are available on the City of Forest Grove webpage at http://www.forestgrove-or.gov/rfps. If assistance is needed to download or work with this digital project information, please contact the Engineering Department at 503-992-3228. No hard copy of the bid documents will be available Notice is hereby given that this contract is for a Public Work, subject to ORS 279C.800 to 279C.870. All bids must be sealed and plainly marked on the outside showing the name of the bidder: the project name: the date and time of bid opening: the words "Sealed Bid City Shop Project": and addressed to: Anna Ruggles, City Recorder, City of Forest Grove, P.O. Box 326, 1924 Council Street, Forest Grove, Oregon 97116 The City may reject any bid not in compliance with all prescribed solicitation procedures and requirements and other applicable law, and may reject any or all bids in whole or in part when the cancelation or rejection is in the best interest of the City.

DATED THIS 13th DAY of January, 2020 Paul Downey, Administrative Services Director City of Forest Grove

https://www.forestgrove-or.gov/rfps

Instructions to Bidders City Shop Project

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CITY SHOP PROJECT

1. Form of Bid All bids must be made upon the blank form of bid attached hereto, and must give prices for each item and aggregate amount for the work. The City of Forest Grove reserves the right to reject any bid not in compliance with all prescribed public contracting procedures and requirements, including the requirement to demonstrate the bidder's responsibility under ORS 279C.375(3)(b) and may reject for good cause all bids after finding that doing so is in the public's interest. The bidder shall sign his/her bid in the blank space provided therefore. Bids made by corporations or partnerships shall contain the name and address of such organization, together with the names and addresses of partners or officers. If the proposal is made by a corporation, it must be signed by one of the officers thereof; if made by a partnership, by one of the partners. All bids must be submitted at the time and place, and in the manner prescribed in the "Advertisement for Bids". No bid for this contract shall be received or considered by the City of Forest Grove unless the bidder is registered and in good standing with the Construction Contractors Board, as required by ORS Chapter 701, or licensed by the State Landscape Contractors Board, as required ORS 671.530.

2. Contract Documents The contract documents under which awardee shall execute this work consists of the Advertisement for Bids, the Instructions to Bidders, Bid Security, the Proposal, the signed Contract, the Performance Bond, the Payment Bond, the Public Works Bond, General Conditions, the Special Provisions, the Technical Specifications, Insurance Certification, and signed addenda; all bound herewith. Any person contemplating the submission of a bid and being in doubt as to the meaning or intent of said contract documents should request, in writing, that the City of Forest Grove's Project Administrator provide a written interpretation thereof.


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3. Prevailing Wage Rates The "Provisions of ORS 279C.800 to ORS 279C.870” relating to the prevailing wage rates will be complied with.

a. The hourly rate of wage to be paid by Contractor or any Subcontractor to workers in each trade or occupation required for the public works employed in the performance of the Contract shall not be less than the specified minimum rate of wage in accordance with ORS 279C.838 and ORS 279C.840.

b. The latest prevailing wage rates for public works contracts in Oregon are contained in the most recent Prevailing Wage Rates for Public Works Projects in Oregon. Such publications can be reviewed electronically at: www.oregon.gov/boli/WHD/PWR/pages/pwr_state.aspx and are hereby incorporated as part of the contract documents.

c. Contractor and all Subcontractors shall keep the prevailing wage rates for this project posted in a conspicuous and accessible place in or about the project.

d. The City of Forest Grove shall pay a fee to the Commissioner of the Oregon Bureau of Labor and Industries as provided in ORS 279C.825. The fee shall be paid to the Commissioner as required by the administrative rules adopted by the Commissioner.

e. If Contractor or any Subcontractor also provides for or contributes to a

health and welfare plan or a pension plan, or both, for its employees on the Project, it shall post notice describing such plans in a conspicuous and accessible place in or about the Project. The notice shall contain information on how and where to make claims and where to obtain future information.

4. Estimate of Quantities

The estimate of quantities of work to be done as given in the proposal, although stated with as much accuracy as possible, is approximate only and is assumed solely for the purpose of comparing bids. The quantities on which payments will be made to the Contractor are to be determined by measurement of the work actually performed by the Contractor as specified in the contract documents. The Owner reserves the right to increase or diminish the amount of any class of work as may be deemed necessary. At the Owner's sole option and if it is determined to be in the Owner's best interest, any one or more Bid Items may be deleted from the work without penalty to the Owner.

http://www.oregon.gov/boli/WHD/PWR/pages/pwr_state.aspx


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5. Bid Security Bids must be accompanied by a certified check on a bank in good standing or a bid bond issued by a surety company authorized to issue such bonds in Oregon in an amount not less than ten (10) percent of the total amount of the proposal submitted payable to the City of Forest Grove. All checks and Bid Bonds excepting that of the successful bidder will be returned within thirty (30) days after the contract has been awarded. The bid security of the successful bidder will be retained until he/she has entered into a satisfactory contract with the Owner. In addition, a Performance Bond will be required in the full amount of the contract and a Payment Bond will be required in the full amount of the contract in accordance with ORS 279C.380.

6. Conditions of Work It is understood that the Contractor, before submitting his/her bid, has made a careful examination of the contract documents; that she/he has fully informed herself/himself as to the quality and quantity of materials and the character of the work required; and that she/he has made a careful examination of the locations and conditions of the work and the source of supply for materials. The Owner will in no case be responsible for any loss or for any unanticipated costs that may be suffered by the Contractor as a result of the Contractor's failure to fully inform herself/himself in advance in regard of all conditions pertaining to the work.

7. Award and Basis of Award of Contract Within ten (10) days after the opening of the bids, the Owner will accept one of the bids or reject all of the bids received. The City of Forest Grove will provide notice of its intent to award in writing per OAR 137-049-0395. It is the Owner's intent to award a single contract to the responsible bidder who submits the lowest total bid and whose proposal complies with these and all other contract documents. In determination of the lowest responsible bidder, the City of Forest Grove reserves the right to take into account and give reasonable weight to the extent of the bidder's experience on work of the nature involved, on the bidder's record as to dependability in the carrying out of other contracts, and evidence of present ability to perform the Contract work in a satisfactory manner. The Owner also reserves the right to reject any or all bids, and to waive any informality or technicality in the bids received or in the bidding procedure.


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8. Execution of Contract and Damages for Failure to Execute The bidder whose proposal is accepted will be required within ten (10) calendar days after notice that a contract has been awarded to him/her, to appear and execute a contract with the City of Forest Grove for the full and complete performance of all work and payment for all labor and materials specified therein, and execute bonds for the faithful performance and payment of such contract in the sum of the total amount of the contract satisfactory to the Owner. Said bonds shall be with a surety company as bondsman whose financial standing and record of service is satisfactory to the Owner. Said performance, payment, and public works bonds shall be in force for one year after acceptance of the completed work to cover all guarantees against defective workmanship and materials. At the time of executing the contract, the successful bidder shall also submit to the Owner the required Certificate of Insurance. Should the successful bidder fail or refuse to execute the contract and furnish the bonds and insurance certification, then the bid security deposited by said bidder shall be retained as liquidated damages by the Owner.

9. Beginning of the Work It is the intent of the Owner that this work begin without delay. The Contractor shall commence the work contemplated under these contract documents within ten (10) calendar days of receipt of Owner's "Notice to Proceed", unless otherwise directed by the Engineer, and shall complete the same within the time specified in the proposal, it being expressly understood and agreed that the time of beginning, the rate of progress and time of completion of the work are of the essence of this contract.

10. Submission of Bids

Each bid shall be sealed in an envelope, properly addressed to the Anna Ruggles, City Recorder, City of Forest Grove, P.O. Box 326, 1924 Council Street, Forest Grove, Oregon 97116, and showing on the outside of the envelope the name of the bidder, the project, the date and hour of opening, and the words "sealed bid" per OAR 137-049-0200(1)(a)(D). Bids will be received at the time and place stated in the Advertisement for Bids.

11. Funding and Owner

This project is being funded by local funds.


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12. Minimum Wage The minimum rate to be paid all crafts and labor on this contract shall be the prevailing wage rate for the individual crafts involved in the Washington County area during the life of the contract or the minimum wage specified in a wage determination decision of the State of Oregon, Commissioners of the Bureau of Labor, whichever is higher.

13. Indemnity Each bidder agrees that his/her performance under this contract is at his/her sole risk and that she/he shall indemnify the City of Forest Grove and, officers, agents and employees, against and hold them harmless from, any and all liability for damages, costs, losses and expenses resulting from, arising out of or in any way connected with this contract, or from Contractor's failure to perform fully hereunder, and bidder further agrees to defend the City of Forest Grove, their officers, agents and employees against all such suits, actions or proceedings brought by any third party against them for which the Contractor would be liable there under.

14. Withdrawal of Bids Any bidder may withdraw their bid, either personally or by written request, in accordance with OAR 137-049-0320(2)(a), at any time prior to closing. However, upon opening, all bids shall be irrevocable for a period of SIXTY (60) days from the time of opening.

15. Items to be Returned with Submission of Bid

a. Bid Schedule 1 b. Resident Bidder Status Certification form c. Bid security not less than ten (10) percent of the total bid d. All addenda or acknowledgment therefore, if any

16. Addenda

The City of Forest Grove will not mail notice of Addenda, but will publish notice of any Addenda on the City's website. Prospective bidders should frequently check the City's website until closing (i.e., at least once weekly until the week of closing and at least once daily the week of or before closing). In all other ways, addenda shall be issued as set forth in OAR 137-049-0250.

17. Solicitation and Award Protests Solicitation protests will be handled pursuant to OAR 137-049-0260(3) and award protests will be handled pursuant to OAR 137-049-0450(4).


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18. Items to be Returned within 2 hours of Bid Opening

In accordance with ORS 279C.370, all bidders must submit to the City of Forest Grove on the attached form (next page) within two (2) hours following the date and time of bid opening, a list of all first tier Subcontractors, who will furnish labor or labor and materials on the project and whose subcontract amounts are at least 5% of the Contractor's total bid amount, but at least $15,000, or $350,000, regardless of the percentage of the total project bid. In accordance with ORS 279C.370 all bidders must submit to the Owner on the attached form (next page) within 2 hours following the date and time of bid opening, a list of all first tier Subcontractors who will perform work on the project and whose subcontract amounts are at least 5% of the Contractors total bid amount or $15,000, whichever is larger; or $350,000, regardless of the percentage of the total project bid.

19. Asbestos Abatement Projects Contractor or Subcontractor under this contract will not be required to be licensed under ORS 468A.720 regarding asbestos abatement projects. OAR 137-049-0200(1)(a)(L)

20. Non-mandatory Pre-bid Conference

A non-mandatory pre-bid conference will be held at the site: 2551A 23rd Avenue, Forest Grove, Oregon at 2:00 PM on Tuesday, January 21, 2020 to discuss the technical features of the proposed work. A tour of the job site will follow, if necessary.


First-tier Subcontractor Disclosure Form City Shop Project

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Project Name: City Shop Project Work Order No.: N/A

Bid No.: N/A

Bid Closing: Date: February 11, 2020 Time: 10:00 AM

Disclosure Deadline: Date: February 11, 2020 Time: 12:00 PM This form must be submitted within two (2) working hours of the advertised bid closing date and time; no later than the DISCLOSURE DEADLINE stated above. FAILURE TO SUBMIT THIS FORM BY THE DISCLOSURE DEADLINE WILL RESULT IN A BID SUBMITTED BECOMING NON-RESPONSIVE, AND SUCH BIDS SHALL NOT BE CONSIDERED FOR AWARD.

Check this box if you will NOT be using any first-tier subcontractors Below, list information of each first-tier subcontractor. (Attach additional sheets, if needed.) Contractors are required to be disclosed if they are providing labor and/or materials with a Dollar Value equal to or greater than:

a) 5% of the total Contract Price, but at least $15,000 (including all alternates). IF the Dollar Value is less than $15,000 do not list the subcontractor above; or

b) $350,000 regardless of the percentage of the total Contract Price.

Name: Address: Contact: Phone No.:

Dollar Value: CCB No.:





Form Submitted by/Bidder Name:

Contact Name: Phone No.:

Deliver Form to Agency:

Person Designated to Receive Form:

Agency’s Address: Phone No.: UNLESS OTHERWISE STATED IN THE ORIGINAL SOLICITATION, THIS DOCUMENT SHALL NOT BE FAXED. IT IS THE RESPONSIBILITY OF BIDDERS TO SEPARATELY SUBMIT THIS DISCLOSURE FORM AND ANY ADDITIONAL SHEETS, WITH THE BID NUMBER AND PROJECT NAME CLEARLY MARKED, AT THE LOCATION INDICATED BY THE SPECIFIED DISCLOSURE DEADLINE. SEE INSTRUCTIONS TO BIDDERS.

BID SCHEDULE

Bid Schedule No. 1 City Shop Project

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BID SCHEDULE NO. 1

CITY SHOP PROJECT

BID SCHEDULE NO. 1 – GENERAL CONSTRUCTION OF BUILDING

o Base quote for the building package including foundation, slab, pre-engineered building overhead doors and all incidentals such as electrical lighting: Amount: _________________

Addenda Acknowledgement

Acknowledgement of Addenda -1-

ACKNOWLEDGEMENT OF ADDENDA

CITY SHOP PROJECT Bid Date: February 11, 2020

Addenda No.: Date Received:






Company:

By:

Title:

Date:

RESIDENT/NONRESIDENT BIDDER STATUS

Resident/Nonresident Bidder Status City Shop Project

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RESIDENT/NONRESIDENT BIDDER STATUS

Oregon law requires that the City of Forest Grove, in determining the lowest responsive bidder, must add a percent increase on the bid of a nonresident bidder equal to the percent, if any, of the preference given to that bidder in the state in which that bidder resides. Consequently, each bidder must indicate whether it is a resident or nonresident bidder. A resident bidder is a bidder that has paid unemployment taxes or income taxes in Oregon during the 12 calendar months immediately preceding submission of this bid, has a business address in Oregon, and has stated in its bid whether the bidder is a “resident bidder”. A “nonresident bidder” is a bidder who is not a resident bidder.

The undersigned bidder states that it is: (check one)

A resident bidder

A nonresident bidder Indicate state in which bidder resides: _____________________

CONSTRUCTION CONTRACTORS REGISTRATION

Oregon law requires that all Contractors must be registered with the Construction Contractors Board in order to submit a bid to do work and to do work as a Contractor. The undersigned bidder states that it is now registered with the Oregon Contractors Board.

Indicate the bidder’s registration no. Signature of Bidder

OR

LANDSCAPE CONTRACTORS LICENSE

The undersigned bidder states that it is now licensed with the Oregon Landscape Contractor’s Board.

Indicate the bidder’s registration no. Signature of Bidder

CONTRACT FOR CONSTRUCTION

Contract for Construction City Shop Project

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CONTRACT FOR CONSTRUCTION CITY SHOP PROJECT

THIS CONTRACT, made and entered into this ________ day of _______________, 2020

by and between the City of Forest Grove hereinafter called the OWNER and _____________________ hereinafter called the CONTRACTOR.

WITNESSETH: Said CONTRACTOR, in consideration of the sum to be paid by the said OWNER and of

the covenants and agreements herein contained, hereby agrees to commence and complete the construction described as follows:

CITY SHOP PROJECT

hereinafter called the PROJECT and to the extent of the Proposal made by the CONTRACTOR on the day of , 2020, all in full compliance with the Contract Documentsreferred to herein.

The “Advertisement for Bids”, the “Instructions to Bidders”, the signed copy of the “Bidder's Proposal”, the signed copy of the “Addenda”, the “General Conditions, the “Special Provisions”, the "Technical Specifications”, the “Performance Bond”, the “Payment Bond”, the “Public Works Bond”, and the “Insurance Certification”, the "Notice of Award", most recent “Prevailing Wage Rates” published by the State of Oregon Bureau of Labor and Industry (BOLI) , the most recent “Oregon Standard Specifications for Construction” including modifications and revisions, and the “Plans”, which include all maps, plats and prints are hereby referred to and by this reference are made a part of this Contract as fully and completely as if same were fully set forth herein and are mutually cooperative herewith.

In consideration of the faithful performance of the work herein embraced, as set forth in these Contract Documents, and in accordance with the direction of the Engineer and to his satisfaction to the extent provided in the Contract Documents, the OWNER agrees to pay the CONTRACTOR the amount bid as adjusted in accordance with and as determined by the provisions of these Contract Documents, and based on the said Bid made by the CONTRACTOR, and to make such payments in the manner and at the times provided in these Contract Documents.

The CONTRACTOR agrees to indemnify and save harmless the OWNER from any and all defects appearing or developing in the workmanship performed or furnished under this Contract while in progress and for a period of one (1) year after the final acceptance thereof by the OWNER.

It is agreed that the time limit for the completion of the contract, based on the Bidder's Proposal shall be ninety (90) calendar days. In the event the CONTRACTOR shall fail to complete the work within the time limit, or extended time limit agreed upon as more particularly set forth in these Contract Documents, liquidated damages shall be computed at the rate indicated in the SCHEDULE OF LIQUIDATED DAMAGES, Item 5.3 of the General Conditions.


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The parties further agree that this amount of liquidated damages is a reasonable

forecast of just compensation for the harm caused by any breach and that this harm is one which is impossible or very difficult to accurately estimate.

Contractor shall comply with all applicable provisions of federal, state, and local laws, including without limitation, applicable provisions of the Oregon Public Contracting Code ORS 279C, as more specifically set forth on Exhibit A. (See attached "Exhibit A")

Contractor shall not assign, sell, dispose of, or transfer rights, nor delegate duties under the Contract, wither in whole or in part, without the City of Forest Grove's prior written consent. Such consent shall not relieve Contractor of any obligations under the Contract. Any assignee or transferee shall be considered the agent of the Contractor and bound to abide by all provisions of the Contract. If the City of Forest Grove consents in writing to an assignment, sale, disposal, or transfer of the Contractor's rights or delegation of Contractor's duties, the Contractor and its surety shall remain liable to the City of Forest Grove for complete performance of the Contract as if no such assignment, sale, disposal, transfer, or delegation had occurred, unless the City of Forest Grove otherwise agrees in writing.

IN WITNESS WHEREOF, we the parties hereto each subscribe to the same this ______ day of _________________, 2020.

OWNER CONTRACTOR BY: Jesse VanderZanden

BY:

TITLE: City Manager

TITLE:

IF THE CONTRACTOR IS A CORPORATION

ATTEST:

TITLE:

(SEAL)


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Exhibit A

Public Contracting Code

Requirements for Public Improvement Contracts over $50,000 1. Contractor shall pay promptly, as due, all persons supplying labor or materials for

the prosecution of the work provided for in the contract, and shall be responsible for such payment of all persons supplying such labor or material to any Subcontractor. (a) ORS 279C.580(3)(a) requires the prime Contractor to include a clause in

each subcontract requiring Contractor to pay the first-tier Subcontractor for satisfactory performance under its subcontract within 10 days out of such amounts as are paid to the prime Contractor by the public contracting agency; and

(b) ORS 279C.580(3)(b) requires the prime Contractor to include a clause in each subcontract requiring Contractor to pay an interest penalty to the first-tier Subcontractor if payment is not made within 30 days after receipt of payment from the public contracting agency.

(c) ORS 279C.580(4) requires the prime Contractor to include in every

subcontract a requirement that the payment and interest penalty clauses required by ORS 279C.580(3)(a) and (b) be included in every contract between a Subcontractor and a lower-tier Subcontractor or supplier.

2. Contractor shall promptly pay all contributions or amounts due the Industrial

Accident Fund from such Contractor or Subcontractor incurred in the performance of the contract, and shall be responsible that all sums due the State Unemployment Compensation Fund from Contractor or any Subcontractor in connection with the performance of the contract shall promptly be paid.

3. Contractor shall not permit any lien or claim to be filed or prosecuted against the Contracting Agency on account of any labor or material furnished and agrees to assume responsibility for satisfaction of any such lien so filed or prosecuted.

4. A notice of claim on Contractor’s payment bond shall be submitted only in accordance with ORS 279C.600 and 279C.605.

5. Contractor and any Subcontractor shall pay to the Department of Revenue all sums withheld from employees pursuant to ORS 316.167.

6. Contractor shall demonstrate to the Contracting Agency that an employee drug- testing program is in place within 10 days of receiving a Notice of Award.


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7. Pursuant to ORS 279C.515, if Contractor fails, neglects or refuses to make prompt payment of any claim for labor or materials furnished to the Contractor or a Subcontractor by any person in connection with the contract as such claim becomes due, the Contracting Agency may pay such claim to the persons furnishing the labor or material and charge the amount of payment against funds due or to become due Contractor by reason of the contract. The payment of a claim in the manner authorized hereby shall not relieve the Contractor or his surety from his or its obligation with respect to any unpaid claim. If the Contracting Agency is unable to determine the validity of any claim for labor or material furnished, the Contracting Agency may withhold from any current payment due Contractor an amount equal to said claim until its validity is determined and the claim, if valid, is paid.

8. Pursuant to ORS 279C.515, if the Contractor or a first-tier Subcontractor fails, neglects, or refuses to make payment to a person furnishing labor or materials in connection with the public contract for a public improvement within 30 days after receipt of payment from the Contracting Agency or Contractor, the Contractor or first-tier Subcontractor shall owe the person the amount due plus interest charges commencing at the end of the 10 day period that payment is due under ORS 279C.580(4) and ending upon final payment, unless payment is subject to a good faith dispute as defined in ORS 279C.580. The rate of interest charged to Contractor or first-tier Subcontractor on the amount due shall equal three times the discount rate on 90-day commercial paper in effect at the Federal Reserve Bank in the Federal Reserve District that includes Oregon on the date that is 30 days after the date when payment was received from the public contracting agency or from the Contractor, but the rate of interest shall not exceed 30%. The amount of interest may not be waived.

9. As provided in ORS 279C.515, if the Contractor or a Subcontractor fails,

neglects, or refuses to make payment to a person furnishing labor or materials in connection with the public contract, the person may file a complaint with the Construction Contractor’s Board, unless payment is subject to a good faith dispute as defined in ORS 279C.580.

10. Pursuant to ORS 279C.530, Contractor shall promptly, as due, make payment to any person, co-partnership, association, or corporation, furnishing medical, surgical and hospital care or other needed care and attention, incident to sickness or injury, to employees of such Contractor, of all sums which the Contractor agrees to pay for such services and all monies and sums which the Contractor collected or deducted from the wages of employees pursuant to any law, contract or agreement for the purpose of providing or paying for such service.

11. Contractor shall employ no person for more than 10 hours in any one day, or 40 hours in any one week, except in cases of necessity, emergency, or where public


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policy absolutely requires it, and in such cases, except in cases of contracts for personal services designated under ORS 279A.055, Contractor shall pay the employee at least time and one-half pay for all overtime in excess of eight (8) hours a day or forty (40) hours in any one week when the work is five (5) consecutive days, Monday through Friday; or for all overtime in excess of 10 hours a day or 40 hours in any one week when the work week is 4 consecutive days, Monday through Friday; and for all work performed on Saturday and on any legal holidays as specified in ORS 279C.540.

12. Pursuant to ORS 279C.540(2), the Contractor must give notice to employees who work on this contract in writing, either at the time of hire or before commencement of work on the contract, or by posting a notice in a location frequented by employees, of the number of hours per day and the days per week that the employees may be required to work.

13. The provisions of ORS 279C.800 to ORS 279C.870 relating to the prevailing wage rates will be complied with. The hourly rate of wage to be paid by Contractor or any Subcontractor to workers in each trade or occupation required for the public works employed in the performance of this Contract shall not be less than the specified minimum rate of wage in accordance with ORS 279C.838 and ORS 279C.840. (a) The latest prevailing wage rates for public works contracts in Oregon are

contained in the most recent Prevailing Wage Rates for Public Works Projects in Oregon. Said publication can be reviewed electronically at:

www.oregon.gov/boli/WHD/PWR/pages.pwr_state.aspx and are hereby incorporated as part of the contract documents.

(b) Contractor and all Subcontractors shall keep the prevailing wage rates for this Project posted in a conspicuous and accessible place in or about the Project.

(c) The Owner shall pay a fee to the Commissioner of the Oregon Bureau of

Labor and Industries as provided in ORS 279C.825. The fee shall be paid to the Commissioner as required by the administrative rules adopted by the Commissioner.

(d) If Contractor or any Subcontractor also provides for or contributes to a

health and welfare plan or a pension plan, or both, for its employees on the Project, it shall post notice describing such plans in a conspicuous and accessible place in or about the Project. The notice shall contain information on how and where to make claims and where to obtain future information.

http://www.oregon.gov/boli/WHD/PWR/pages.pwr_state.aspx


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14. Unless exempt under ORS 279C.836(4), (7), (8) or (9), before starting work on

this contract, or any subcontract hereunder, Contractor and all Subcontractors must have on file with the Construction Contractors Board a public works bond with a corporate surety authorized to do business in the state of Oregon in the amount of $30,000. The bond must provide that the Contractor or Subcontractor will pay claims ordered by the Bureau of Labor and Industries to workers performing labor upon public works projects. The bond must be a continuing obligation, and the surety’s liability for the aggregate of claims that may be payable from the bond may not exceed the penal sum of the bond. The bond must remain in effect continuously until depleted by claims paid under ORS 279C.836(2), unless the surety sooner cancels the bond. The surety may cancel the bond by giving 30 days’ written notice to the Contractor or Subcontractor, to the board and to the Bureau of Labor and Industries. When the bond is canceled, the surety is relieved of further liability for work performed on contracts entered into after the cancellation. The cancellation does not limit the surety’s liability for work performed on contracts entered into before the cancellation. Contractor further certifies that Contractor will include in every subcontract or provision requiring a Subcontractor to have a public works bond filed with the Construction Contractors Board before starting work on the project, unless exempt under ORS 279C.836(4), (7), (8), or (9). (a) Unless exempt under ORS 279C.836(4), (7), (8), or (9), before permitting

a Subcontractor to start work on this public works project, the Contractor shall verify that the Subcontractor has filed a public works bond as required under this section or has elected not to file a public works bond under ORS 279C.836(7).

(b) Unless public contracting agency has been notified of any applicable exemptions under ORS 279C.836(4), (7), (8), or (9), the public works bond requirement above is in addition to any other bond Contractors or Subcontractors may be required to obtain under this contract.

15. As may be required by ORS 279C.845, Contractor or Contractor’s surety and

every Subcontractor or Subcontractor’s surety shall file certified payroll statements with the Contracting Agency in writing. (a) If a Contractor is required to file certified statements under ORS

279C.845, the Contracting Agency shall retain 25% of any amount earned by the Contractor on the public works project until the Contractor has filed with the Contracting Agency statement as required by ORS 279C.845. The Contracting Agency shall pay the Contractor the amount retained within 14 days after the Contractor files the required certified statements, regardless of whether a Subcontractor has failed to file certified


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statements required by statute. The Contracting Agency is not required to verify the truth of the contents of certified statements filed by the Contractor under this section and ORS 279C.845.

(b) The Contractor shall retain 25% of any amount earned by a first-tier

Subcontractor on this public works contract until the Subcontractor has filed with the Contracting Agency certified statements as required by ORS 279C.845. The Contractor shall verify that the first-tier Subcontractor has filed the certified statements before the Contractor may pay the Subcontractor any amount retained. The Contractor shall pay the first-tier Subcontractor the amount retained within 14 days after the Subcontractor files the certified statements as required by ORS 279C.845. Neither the Contracting Agency nor the Contractor is required to verify the truth of the contents of certified statements filed by a first-tier Subcontractor.

16. All employers, including Contractor, that employ subject workers who work under

this contract shall comply with ORS 656.017 and provide the required Workers’ Compensation coverage, unless such employers are exempt under ORS 656.126. Contractor shall ensure that each of its Subcontractors complies with these requirements.

17. All sums due the State Unemployment Compensation Fund from the Contractor or any Subcontractor in connection with the performance of the contract shall be promptly so paid.

18. The contract may be canceled at the election of Contracting Agency for any willful failure on the part of Contractor to faithfully perform the contract according to its terms.

19. Contractor certifies that it has not discriminated against minorities, women or emerging small business enterprises or a business enterprise that is owned or controlled by or that employs a disabled veteran as defined in ORS 408.225 in obtaining any required Subcontractors. ORS 279A.110.

20. Contractor certifies its compliance with the Oregon tax laws, in accordance with ORS 305.385.

21. In the performance of this contract, the Contractor shall use, to the maximum extent economically feasible, recycled paper, materials, and supplies, and shall compost or mulch yard waste material at an approved site, if feasible and cost effective.

22. As may be applicable, Contractor certifies that all Subcontractors performing construction work under this contract will be registered with the Construction Contractors Board or licensed by the state Landscaping Contractors Board in


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accordance with ORS 701.035 to ORS 701.055 before the Subcontractors commence work under this contract.

23. Pursuant to Contracting Agency Public Contracting Rule 137-049-0880, the Contracting Agency may, at reasonable times and places, have access to and an opportunity to inspect, examine, copy, and audit the records relating to the Contract.

24. In compliance with the provisions of ORS 279C.525, the following is a list of federal, state and local agencies, of which the Contracting Agency has knowledge, that have enacted ordinances or regulations dealing with the prevention of environmental pollution and the preservation of natural resources that may affect the performance of the contract:

FEDERAL AGENCIES:

• Agriculture, Department of o Forest Service o Soil Conservation Service

• Defense, Department of o Army Corps of Engineers

• Environmental Protection Agency • Interior, Department of

o Bureau of Sport Fisheries and Wildlife o Bureau of Outdoor Recreation o Bureau of Land Management o Bureau of Indian Affairs o Bureau of Reclamation

• Labor, Department of o Occupational Safety and Health Administration

• Transportation, Department of o Federal Highway Administration

• Homeland Security, Department of o Coast Guard

STATE AGENCIES:

• Agriculture, Department of • Environmental Quality, Department of • Fish and Wildlife, Department of • Forestry, Department of • Geology and Mineral Industries, Department of • Human Resources, Department of • Land Conservation and Development Commission • Soil and Water Conservation Commission


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• State Engineer • State Land Board • Water Resources Board

LOCAL AGENCIES:

• City Council • County Court • County Commissioners, Board of • Port Districts • Metropolitan Service Districts • County Service Districts • Sanitary Districts • Water Districts • Fire Protection

PERFORMANCE BOND

Performance Bond City Shop Project

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PERFORMANCE BOND (City of Forest Grove)

KNOW ALL MEN BY THESE PRESENTS:

That ____________________________________, as Principal, and ____________________________________ duly authorized to transact Surety Business, in the State of Oregon, as Surety are held and firmly bound unto the City of Forest Grove, Oregon, hereinafter called the Obligee, in the penal sum of ________________________ Dollars ($_______________). For the payment whereof Principal and Surety bind themselves, their heirs, executors, administrators, successors, and assigns, jointly and severally, firmly by these presents.

THE CONDITION OF THIS BOND IS AS FOLLOWS:

WHEREAS, The said Principal herein has made and entered into a certain Contract, a copy of which is attached hereto, with the City of Forest Grove, Oregon, which Contract, together with the applicable Plans, Specifications, and Bid Proposal, is by this reference made a part hereof, and is hereinafter referred to as the Contract.

This Performance Bond shall guarantee the improvement against defects in materials or workmanship for a period of one (1) year from the date of written acceptance by the City of Forest Grove.

NOW, THEREFORE, If the Principal herein shall faithfully and truly observe and comply with the terms of the Contract, in all respects, and shall well and truly and fully do and perform all matters and things by him undertaken to be performed under said Contract, upon the terms set forth therein and within the time prescribed therein, and shall indemnify and save harmless the City of Forest Grove, its officers, employees and agents, against any direct or indirect damages of every kind and description that shall be suffered or claimed to be suffered in connection with or arising out of the performance of the said Contract by the said Principal or his subcontractors and to all persons supplying to the prosecution of the work, or any part thereof, provided for in said Contract, and shall pay all contributions or amounts due the State Industrial Accident Fund and incurred in the performance of said Contract, and pay all sums of money withheld from the employees of said Principal and payable to the Department of Revenue, pursuant to ORS 315.757 or 316.575, and shall promptly as due, make payment to any persons, co-partnership, association, or corporation furnishing medical, surgical, and hospital care or attention incident to sickness or injury to the employees of such Principal; and shall pay all other just debts, dues and demands incurred in the performance of the said Contract and shall pay the

Performance Bond City Shop Project

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City of Forest Grove such damages as may accrue to the City under said Contract and shall in all respects perform said Contract according to law, then this obligation is to be void, otherwise to remain in full force and effect.

This bond is given and received under the authority of Chapter 279C, Oregon Revised Statutes, the provisions of which are hereby incorporated into this bond and made a part hereof. Nonpayment of the bond premium will not invalidate this bond, nor shall the City of Forest Grove be obligated for its payment.

IN WITNESS WHEREOF, the seal and signature of the said Principal is hereto affixed and the corporate seal and name of the said Surety is hereto affixed and attested by its duly authorized attorney-in-fact and agent at ___________________________________ this day of , 20 .

By: Principal

Witness of Attest:

By: Attorney-In-Fact

Surety

Countersigned: By:

Resident Agent

LABOR & MATERIAL PAYMENT BOND

Labor and Material Payment Bond City Shop Project

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LABOR AND MATERIAL PAYMENT BOND (City of Forest Grove)

KNOW ALL MEN BY THESE PRESENTS:

That ____________________________________, as Principal, and ____________________________________ duly authorized to transact Surety Business, in the State of Oregon, as Surety are held and firmly bound unto the City of Forest Grove, Oregon, hereinafter called the Obligee, in the penal sum of ________________________ Dollars ($_______________). For the payment whereof Principal and Surety bind themselves, their heirs, executors, administrators, successors, and assigns, jointly and severally, firmly by these presents.

THE CONDITION OF THIS BOND IS AS FOLLOWS:

WHEREAS, The said Principal herein has made and entered into a certain Contract, a copy of which is attached hereto, with the City of Forest Grove, Oregon, which Contract, together with the applicable Plans, Specifications, and Schedule of Contract prices, is by this reference made a part hereof, and is hereinafter referred to as the Contract.

NOW, THEREFORE, If the Principal herein shall make payment promptly, as due to all subcontractors, equipment, supplies, labor or materials for the prosecution of the work, or any part thereof, provided for in said contract, and shall pay all contribution of amounts due its workers compensation carrier and the State Unemployment Compensation Trust Fund from such Contractor or subcontractors incurred in the performance of said contract, and pay all sums of money withheld from the Contractor's employees and payable to the Revenue Department; and shall pay all other just debts, dues and demands incurred in the performance of the said contract and shall pay the City of Forest Grove, such damages as may accrue to the City under said contract, then this obligation is to be void, otherwise to remain in full force and effect.

This bond is given and received under the authority of Chapter 279C, Oregon Revised

Statutes, the provisions of which are hereby incorporated into this bond and made a part hereof. Nonpayment of the bond premium will not invalidate this bond, nor shall the City of Forest grove be obligated for its payment.

Labor and Material Payment Bond City Shop Project

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IN WITNESS WHEREOF, the seal and signature of the said Principal is hereto affixed and the corporate seal and name of the said Surety is hereto affixed and attested by its duly authorized attorney-in-fact and agent at ___________________________________ this day of , 20 .

By: Principal

Witness of Attest:

By: Attorney-In-Fact

Surety

Countersigned: By:

Resident Agent

GENERAL CONDITIONS

General Conditions City Shop Project

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GENERAL CONDITIONS

1. DEFINITIONS In the material bound herewith, certain words or expressions shall be

understood to have the following meanings:

4.1 Bidder Any individual, firm or corporation formally submitting a proposal for the work contemplated herein, acting either directly or through an authorized representative. 4.2 City Wherever the word "City" occurs in these Contract Documents, the term shall signify the incorporated City of Forest Grove, Oregon, acting through its governing body or authorized employees. 4.3 Contractor The individual, firm or corporation undertaking the execution of the work under the terms of the Contract and acting either directly or through his or its agents or employees. 4.4 Engineer The word "Engineer" shall signify the Director of Public Works of the City of Forest Grove, acting either directly or through an authorized City employee. 4.5 Contract Documents The Contract Documents consist of the Instructions to Bidders, General Conditions, the Advertisement for Bids, Project Proposal, all Addenda, Special Provisions, Technical Specifications, the Contract, the Performance Bond, Payment Bond, Public Works Bond, Bid Schedules, and the Plans, all bound herewith. The Contract Documents shall also include the most recent BOLI Prevailing Wage Rate Schedule, the most recent Oregon Standard Specifications for Construction, published by the Oregon Department of Transportation, including all modifications thereof, incorporated into the Contract Documents before their execution; and all Change Orders entered into by mutual agreement between the City and the Contractor. 4.6 Work Work shall be understood to mean the furnishing of all labor, materials, equipment and other incidentals necessary for the successful completion of the project and obligations imposed upon the Contractor by the Contract.


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4.7 Latest Edition of Oregon Standard Specifications for Construction “Oregon Standard Specifications for Construction” and “Oregon Standard

Specifications” shall be understood to mean: the most recent Oregon Standard Specifications for Construction, and any modifications thereof.

2. PLANS AND SPECIFICATIONS

2.1 Plans

The Plans that describe the work to be performed are as tabulated in the Contract. In the event of discrepancies between the Plans and Specifications, the Specifications shall govern, or as otherwise specified in the Special Provisions of the Specifications.

2.2 Alteration in Details of Construction

The Engineer, during the progress of the work may alter any of the details of construction as may be found expedient, or suitable, and such alterations shall not invalidate the Contract nor release the surety, and the Contractor agrees to execute the altered work the same as if it had been part of the original Contract. Any claims for extension of time or payment for extra work involved shall be made by the Contractor at the time that such alterations are authorized. If alterations result in diminishing the quantity of work, they shall not constitute a claim for anticipated profits on the work so dispensed with.

3. THE ENGINEER

3.1 Engineer’s Status

The Engineer shall have general supervision and direction of the work. He is the agent of the City to the extent provided in the Contract Documents. He has authority to stop the work whenever such stoppage may be necessary to insure the proper execution of the Contract.

The Engineer shall, within a reasonable time, make decisions and

recommendations on all claims of the City or Contractor and on all matters relating to the execution and progress of the work, and on interpretation of the Plans, and the City shall finally approve of all such decisions.

3.2 Unnoticed Defects and Rejected Material

If any portion of the work shall prove defective and not in conformance with the Plans and Specifications, and if such defective or non-conforming work does not, in the opinion of the Engineer, detract from soundness or acceptability, the Engineer, subject to the written approval of the City, shall have full authority to retain such work and make such deductions in the payment to the Contractor as are determined just and reasonable. All other defective or non-conforming work and rejected material shall be removed and replaced at the Contractor's expense. Failure by the Engineer to condemn or reject defective or non-conforming work and materials shall not be construed to imply


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acceptance of such work and materials. 3.3 Approval of Shop Drawings

The Contractor shall submit four (4) copies of all shop or setting drawings and schedules required for the work of the various trades, and the Engineer shall pass upon them with reasonable promptness, making desired corrections. The Contractor shall make any corrections required by the Engineer, file with him two corrected copies, and furnish such other copies as may be needed. The Engineer's approval of such drawings or schedules shall not relieve the Contractor from responsibility for deviations from the Plans and Specifications unless he has in writing called the Engineer's attention to such deviations at the time of submission, nor shall it relieve him from responsibility for errors of any sort in shop drawings of schedules.

4. THE CONTRACTOR

4.1 Contractor’s Representatives

The Contractor shall at all time during his absence from the work, have a competent superintendent or foreman as his agent on the work, who shall receive instructions from the engineer or his authorized representatives. The superintendent or foreman shall have full authority and responsibility to promptly supply such materials, tools, plant equipment, and labor as may be required.

4.2 Laws, Permits and Licenses

The Contractor at all times shall observe and comply with all Federal and State laws, City ordinances and regulations in any manner affecting the conduct of the work, and shall further comply with such orders or decrees as exist at present, and those which may be enacted later by bodies or tribunals having any jurisdiction or authority over the work. The Contractor shall indemnify and save harmless the City, its officers and employees against the claim or liability arising from the violation of any such laws, ordinances, regulations, orders or decrees, whether such violation be by the Contractor, his Subcontractors or his employees.

The Contractor shall procure all permits and licenses, pay all charges and

fees and give all notices necessary and incidental to the due and lawful prosecution of the work.

4.3 Protection of Property and Persons

In the performance of the work to be done under the Contract, the Contractor shall use every reasonable means to avoid damage to property, injury to persons and loss, expense, inconvenience, and delay to the City, users, and others. He shall provide protective devices wherever and whenever needed in affording this protection and, in the performance of the work, he shall use no means or methods which will endanger either persons or property. He shall further comply with all Federal, State and Local Codes relating to the safety and protection of his employees.


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All damages and injury to property that may be caused by or that may

result from the carrying out of the work to be done under the Contract or from any act, omission, or neglect of the Contractor, shall promptly be made good by the Contractor either by repairing, rebuilding or replacing of the property damaged.

4.4 Furnishing of Material

Unless otherwise specified in the Special Provisions, all material furnished in connection with the work shall be new and first quality.

4.5 Inspection of the Work

The Engineer or his representatives shall be allowed access to all parts of the work at all times and shall be furnished with every reasonable facility for ascertaining whether or not the work as performed is in accordance with the requirements and intent of the Plans and specifications. The Contractor shall cut and replace with new materials, at his own expense, such samples as are customarily required for testing purposes. The Contractor shall, at any time before acceptance of the work, remove or uncover such portions of the finished work as may be directed. After examination, the Contractor shall restore said portions of the work to the standard required by the Specifications. Should the work thus exposed of examined prove acceptable, the uncovering or removing, and the replacing of the covering or the making good of the parts removed, shall be paid for as "extra work", but should the work so exposed or examined prove unacceptable, the uncovering or removing, and replacing of the covering and the making good of the parts removed, shall be at the Contractor's expense.

4.6 Subcontractors

Nothing in these Contract Documents shall be construed to imply a contractual relationship between the City and any Subcontractor engaged by the Contractor. The Contractor agrees that he is fully responsible to the City for all acts of his Subcontractors, material suppliers, employees and indirect employees.

4.7 Responsibility for Damages

The Contractor shall be responsible for all loss, expense, inconvenience and delay that may be caused by or that may result from any act, omission or neglect of the Contractor in the performance of the work to be done under the Contract. The Contractor shall indemnify and save harmless the City and its officers and employees from all claims, demands, suits or actions of every name and description brought for or on account of any damage, injury, loss, expense, inconvenience or delay received or sustained, or claimed to be received or sustained, by any person or persons, which damage, injury, loss, expense, inconvenience, or delay may have been caused by or may have resulted from the performance of the work to be done under the Contract.


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4.8 Responsibility for the Work Until final acceptance of the Contract, the Contractor shall be held

responsible for any injury or damage to the work or to any part thereof by the action of the elements, or from any cause whatsoever, and he shall make good at his own expense all injuries or damages to any portion of the work before its completion and final acceptance. 4.9 Taxes

The Contractor shall withhold all Federal, State and local taxes from wages, make all Social Security payments, and pay all taxes, charges and fees which are now or may hereafter be charged.

4.10 Performance, Payment, and Public Works Bonds

The Contractor shall furnish surety bonds in amounts equal to the total amount of the Contract, as set forth in the Bidder's Proposal as satisfactory to the City. The bonds shall be on the forms bound herewith and shall remain in full force for one (1) year after conditional acceptance of the work, to cover all guarantees against defective workmanship and materials and to insure payment to all person supplying labor or materials in connection with the Contract.

Pursuant to Senate Bill 477, the Contractor shall be required have a

Public Works Bond filed with the Construction Contractors Board (CCB) prior to the start of work on any Public Works project, unless exempt. The Contractor shall also require every Subcontractor to have a Public Works Bond filed with the CCB prior to starting work on a project, unless exempt. In addition, the Contractor shall provide proof to the City of Forest Grove that his/her Public Works Bond and Public Works Bonds of all Subcontractors have been filed with the Construction Contractors Board.

4.11 Insurance

Prior to the start of the work under the Contract, the Contractor shall furnish the City with satisfactory proof of hold-harmless, insurance and related requirements for both work in progress and completed operation as follows:

A. General

In order to protect the financial assets and interests of the City of Forest Grove and to clarify responsibility and liability between the City and the Contractor, the following procedures, language and conditions shall apply to the work and are hereby incorporated in the contract as if set out in full therein.

B. Hold-Harmless and Indemnification Requirements

To the fullest extent of the law, the Contractor will defend, indemnify, hold harmless and reimburse the City of Forest Grove (including its officers, Council members, agents and employees) from all claims, demands, suits, actions, penalties, damage expenses for liability of any


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kind) including attorney’s fees. To the extent that death or bodily injury to persons or damage to property arises out of the fault of the Contractor, the Contractor’s indemnity obligation exists only to the extent it contributed to or caused such damage, whether or not such are contributed to or caused in any part by the City of Forest Grove.

C. General Insurance Requirements

The Contractor shall maintain in force for the duration of this agreement a Commercial General Liability insurance policy written on an occurrence basis with limits not less than $1,000,000 per occurrence and $2,000,000 in the aggregate. Automobile Liability (owned, non-owned and hired) insurance with limits not less than $1,000,000 per occurrence shall be maintained. The City, its employees, officials and agents will be named as additional insured with respect to work or services performed under this agreement. This shall apply to both work in progress and completed operations. This insurance will be primary over any insurance the City may carry on its own.

D. Builder’s Risk Insurance

If so specified in the Contract Documents, the Contractor shall maintain an all risk insurance policy covering the replacement cost of the work during the course of construction. The policy shall include the interest of the City and the design architect or engineer. The amount of the insurance shall equal the completed value of the contract amount.

E. Worker’s Compensation Insurance

The Contractor shall provide and maintain worker’s compensation coverage for its employees, officers, agents or partners, as required by applicable Worker’s Compensation laws.

F. Evidence of Insurance Coverage

Evidence of the above coverages issued by a company satisfactory to the City of Forest Grove shall be provided to the City by way of a certificate(s) of insurance prior to the commencement of any work or services. A 30- day notice of cancellation or material change in coverage clause shall be included. Clauses such as “Company will endeavor to mail 30 days written notice” must be modified as follows: “Company will endeavor to mail 30 days written notice.”

Furthermore, clauses such as “but failure to mail such notice shall

impose no obligation or liability of any kind upon the Company, its agents or representatives” must be stricken as follows: “but failure to mail such notice shall impose no obligation or liability of any kind upon the company, its agents or representatives”. Failure to maintain the proper insurance shall be grounds for immediate termination of this contract.


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G. Equipment and Material The Contractor shall be responsible for any loss, damage or

destruction of its own property, equipment and materials used in conjunction with the work.

H. Subcontractors Insurance Requirements

The Contractor shall require all Subcontractors to provide and maintain general liability, auto liability, professional liability (where applicable) and worker’s compensation insurance with coverages equivalent to those required of the general Contractor in this contract. The Contractor shall require certificates of insurance from all Subcontractors as evidence of coverage.

4.12 Guarantee

The Contractor shall guarantee all work and materials furnished under the Contract for a period of one (1) year after conditional acceptance and he shall, at his own proper expense, repair and replace any such defective materials and workmanship to the satisfaction of the Engineer, and shall hold the City harmless from all claims arising from defective materials, and workmanship. Nothing herein contained, to furnish materials and workmanship in accordance with Plans and Specifications as herein provided, may be changed without written authorization of the City.

4.13 Liens and Claims

The Contractor shall not permit a lien to be filed against the works, and prior to final payment for the work performed under the Contract, the Contractor shall furnish the City with an affidavit stating that all claims on labor, services or materials have been settled and filed with the City, the Contractor shall promptly refund to the City all monies that the City may have been compelled to pay in satisfying such liens, including attorney's fees and costs.

5. PROSECUTION AND PROGRESS OF THE WORK

5.1 Prosecution of the Work

The work to be done under the Contract shall not be commenced until the Contract, the Performance and Payment Bonds, the Public Works Bond, and Insurance Certification have been executed by the Contractor and his surety and delivered to the City. Performance of the work to be done under the Contract shall be commenced within ten (10) calendar days after the Contractor has been issued a Notice to Proceed.

After the award of the Contract and prior to the work commencing, the

Contractor shall meet and consult with the Engineer on the Contractor's proposed arrangements for the prosecution of the work and timing schedules for the various phases of the work. It is agreed by the Contractor that time is the essence of the Contract; and from the time of commencement of the work to the


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time of completion; the work shall be prosecuted vigorously and continuously, and always in accordance with a schedule which will insure completion within the specified time limit.

5.2 Character of Workman and Equipment

The Contractor shall employ only competent and efficient laborers, mechanics or artisans; and whenever, in the opinion of the Engineer, any employee is careless or incompetent, or obstructs the progress of the work, or acts contrary to instructions or conducts himself improperly, the Contractor shall, upon written complaint of the engineer, discharge or otherwise remove him from the work and not employ him again on it. The methods, equipment and appliances used and the quantity and quality of the personnel employed on the work shall be such as will produce a satisfactory quality of work and shall be adequate to complete the Contract within the time limit specified.

5.3 Time of Completion and Liquidated Damages

Inasmuch as delay in the prosecution of the work will inconvenience and increase the cost to the City, it is essential that the work be pressed vigorously to completion. Therefore, the work to be done under the Contract shall be completed in its entirety before the elapse of the number of calendar days stated in the Contract. Recording of the elapse of the calendar days will begin with the tenth (10) calendar day following the date of the notice to proceed.

A calendar day is hereby defined as every day, except legal holidays, as

designated by the State of Oregon, on which the Contractor is not prevented, by conditions resulting from inclement weather, or by suspension of work ordered by the Engineer or specifically required by provisions of the Contract or by acts of God from performing work under the Contract with daily productiveness equal to at least fifty (50) percent of the daily productiveness normally possible at the same stage of construction under favorable conditions. The relative productiveness as determined by the Engineer shall be conclusive.

It is agreed by the parties to the Contract that, in case all the work called

for under the Contract in all parts and requirements, is not finished or completed within the number of calendar days called for in the Contract, damage will be sustained by the City, and that it is and will be impracticable and extremely difficult to ascertain and determine the actual damage which the City will sustain in the event of and by reason of such delays; and it is therefore agreed that the Contractor will pay to the City as liquidated damages or the City at its option, may deduct from any monies due or to become due to the Contractor from the City, the sum indicated in the schedule shown for each and every calendar day elapsed in excess of the number of calendar days specified for the performance and completion of the work called for in the Contract.

The parties further agree that this amount of liquidated damages is

a reasonable forecast of just compensation for the harm caused by any breach and that this harm is one which is impossible or very difficult to


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accurately estimate.

SCHEDULE OF LIQUIDATED DAMAGES

Total Amount of Contractor’s Bid Per Diem Amount of Liquidated Damages

Including But Less Than

$0 $5,000 $30

$5,000 $15,000 $70

$15,000 $25,000 $110

$25,000 $70,000 $185

$70,000 $130,000 $260

$130,000 $250,000 $335

$250,000 $500,000 $410

$500,000 $1,000,000 $485

$1,000,000 and over - $560

Permitting the Contractor to continue and finish the work or any part

thereof after the time or number of calendar days fixed for its completion, including any increase in calendar days which may have been granted as hereinafter provided, shall in no way operate as a waiver on the part of the City of any of its rights under the Contract.

Payment of liquidated damages shall not release the Contractor

from obligation in respect to the fulfillment of the entire Contract, nor shall the payment of such liquidated damages constitute a waiver of the City's right to collect any additional damages which it may sustain by failure of the Contractor to carry out the terms of his Contract, it being the intention of the parties that said liquidated damages be full and complete payment only for failure of the Contractor to complete the work on time.

5.4 Increase in Time for Performance of Contract

Temporary suspension of work and delays, occasioned by errors or changes in the Plans and Specifications of the Contract or failure of the City, its employees and its other Contractors to act promptly in carrying out obligations and duties shall be considered causes for increasing the number of calendar days specified for the completion of the work without assessment for liquidated damages, to the extent only that said causes actually increase the number of calendar days required for completion of the work to be done under the Contract.


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Shortage or inadequacy of labor or equipment, or failure to supply the necessary materials, shall not be considered to be beyond the Contractor's control, and delays resulting there from shall not be considered cause for increase in the number of calendar days specified for the completion of the work.

In the event the Contractor is prevented from completing the work to be

done within the number of calendar days, specified for completion by reason of one or more of the causes set forth above only, the Contractor may request the City to increase the number of calendar days specified for the completion of the work without assessment of liquidated damages. The request shall be in writing, shall set forth in full the conditions which have delayed or prevented completion of the work, shall state the dates of the calendar days during which prosecution of the work was actually prevented by such conditions. The decisions of the City as to whether and to what extent an increase in the number of calendar days for completion of the work without assessment of liquidated damages shall be granted shall be final.

5.5 Cancellation of Contract by the Owner

If the Contractor should be adjudged as bankrupt, or if he should make a general assignment for the benefit of his creditors, or if a receiver should be appointed on account of his insolvency, or if he should persistently refuse or should fail to supply enough properly skilled workmen or proper materials for the efficient prosecution of the project, or if he should fail to make prompt payment to Subcontractors or for material or labor, or persistently disregard laws, ordinances or the instructions of the Engineer or otherwise be guilty of a substantial violation of any provision of the Contract, then the City, upon the certificate of the Engineer that sufficient cause exists to justify such action, may, without prejudice to any other right or remedy and after giving the Contractor and his surety seven (7) days written notice, terminate the employment of the Contractor, and require the surety to complete the Contract. In the event action as above is taken by the City, the Contractor shall not be entitled to receive any further payment and payments due shall be made directly to the surety; and upon completion of the work by the surety, the surety will be entitled to receive an amount equal to the difference of the sum of amounts previously paid to the Contractor and the amount the Contractor would have been entitled to receive for the work, under the terms of the Contract, had he himself completed the work.

In lieu of the above, the City may, if it so elects, take possession of the

premises and of all materials, tools and appliances thereon and finish the work by whatever method the City may deem expedient. In such cases the Contractor shall not be entitled to receive any further payment until the work is finished. If the unpaid balance of the Contract price shall exceed the expense of finishing the work including compensation for additional managerial and administrative services, such excess shall be paid to the Contractor. If such expense shall exceed such unpaid balance, the Contractor shall with the


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surety's guarantee, pay the difference to the City. The expense incurred by the City, as herein provided, and the damage incurred through the Contractor's default, shall be certified by the Engineer.

5.6 Use of Premises by the City

The City reserves the right to enter upon the premises, to use same, and to let other contracts in connection with this Contract, or to use parts of the work of the Contractor before the final completion of the work, it being understood that such use by the City in no way relieves the Contractor from full responsibility of his obligations in completing his Contract. Taking possession of completed or partially completed portions of the work shall not constitute acceptance of any work not completed in compliance with the Contract Documents. The Contractor shall be entitled to extra compensation and/or an increase in the time limit if the Engineer determines that such possession by the City increases the Contractor's costs and delays the work.

5.7 Cutting and Patching

The Contractor shall do all cutting, fitting or patching of his work that may be required to make its several parts come together properly and fit it to receive or be received by work of other Contractors or existing facilities, as shown upon or reasonably implied by the Plans and Specifications for the completed structure, and he shall make good after them as the Engineer may direct. The Contractor shall not endanger any work by overloading, cutting, digging, or otherwise, and shall not alter the work of any other Contractor without the consent of the Engineer. 5.8 Cleanup by Contractor

The Contractor shall at all times keep the premises free from accumulations of waste material or debris caused by his employees or work materials, and leave the work in a neat condition satisfactory to the City. The project area shall be cleaned up within two (2) weeks of the final acceptance of the project by the City.

6. PAYMENT FOR THE WORK

6.1 Application for Payments by the Contractor

Partial payments shall be made in accordance with ORS 279.435 to ORS 279C.570 and shall be due the Contractor not later than 30 days after receipt of the invoice, for work performed during the preceding calendar month. Five (5) percent (%) of the amount invoiced will be retained out of progress payments as allowed under this statute.

The Contractor shall submit to the City an application for each payment,

and if required, receipts or other vouchers showing his payment for materials and labor, including payments to Subcontractors. Such application shall be submitted at least thirty (30) days before each payment falls due and if required, the Contractor shall submit with the application to the City a schedule of values


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of various parts of the work upon which payment is requested. No certificate issued or payment made to the Contractor shall be an

acceptance of any work or materials not in accordance with the Contract. Five (5) percent of all monies earned by the Contractor will be retained no more than thirty (30) days after the date upon which the City accepts the work covered by the Contract, as evidenced by the Engineer's final inspection and recommendation of acceptance.

6.2 Extra Work

Extra work shall not be performed by the Contractor, except in an emergency endangering life or property, unless it is in pursuance of a written supplemental agreement, signed by the City. No claim for an addition to the Contract price shall be valid unless the extra work involved has been ordered by supplemental agreement, with the amount of the extra claim established prior to the execution of the extra work.

6.3 Suspension of Payments

No partial or final payment shall be made as long as any order made by the Engineer to the Contractor in accordance with the Specifications remains un-complied with. Neither shall any partial or final payment be made as long as any claim of lien filed or prosecuted against the City, contrary to the provisions of the Contract remains unsatisfied.

6.4 Final Inspection

Unless otherwise provided, the Engineer shall make a final inspection of all work included in the Contract within ten (10) days after notification by the Contractor that the work is completed. If the work is not acceptable to the Engineer, he shall advise the Contractor as to the particular defects to be remedied before final acceptance can be made. When, in the opinion of the Engineer, the work is acceptable and has been completed in accordance with the Contract, the Engineer shall file a Certificate of Completion with the City. Neither the final certification nor the final Payment nor any provision of the Contract Documents shall relieve the Contractor of his responsibility for defective material and workmanship for the length of, and to the extent of his guarantee as provided under Item 4.12 of these General Conditions. The failure or neglect on the part of the Engineer to condemn unsatisfactory material or to reject inferior workmanship shall in no way release the Contractor, nor shall the Engineer's acceptance thereof be construed to mean the acceptance of such unsatisfactory work or material, and no payment therefore shall be construed as an acceptance of defective work or improper materials under the provisions of the Contract Documents. 6.5 Final Payment

As soon as practicable after the completion and acceptance of the work under the Contract, as evidenced by the Engineer's certificate of completion, the


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Engineer will prepare a final estimate of the total amount earned by the Contractor in accordance with the terms of the Contract and all supplemental agreements. Following this determination of the total amount earned by the Contractor, and final acceptance of the work by the City, final payment shall be made to the Contractor. All prior estimates and payments shall be subject to correction in the final estimate and payment.

The acceptance by the Contractor of final payment shall be and shall

operate as a release to the City of all claims and all liability to the Contractor other than claims in stated amounts as may be specifically excepted by the Contractor for all things done or furnished in connection with this work and for every act and neglect of the City and others relating to or arising out of this work. Any payment, however, final or otherwise, shall not release the Contractor or its sureties from any obligations under the Contract Documents or the Performance, Payment, and Public Works Bonds.

PREVAILING WAGE RATES

Prevailing Wage Rates City Shop Project

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PREVAILING WAGE RATES

CITY SHOP PROJECT

In accordance with ORS 279C.800 et seq., copies of the general prevailing rate of per diem wages in the locality have been determined by the Commissioner of the Bureau of Labor. The most recent Prevailing Wage Rates for Public Works Projects in Oregon are hereby incorporated as part of the contract documents. Such publication can be reviewed electronically at:

www.oregon.gov/boli/WHD/PWR/pages/pwr_state.aspx It shall be mandatory for the Contractor and all Subcontractors to pay not less than the applicable prevailing rates for each craft, classification or type of worker. As a condition of this contract the Contractor and all Subcontractors shall file with the City completed copies of the "Payroll/Certified Statement Form WH-38" included with these specifications.

FORM WH-81 "NOTICE OF AWARD OF PUBLIC WORKS CONTRACT" In accordance with ORS 279C.385 the contracting agency is required to submit a copy of this form to the Bureau of Labor within thirty (30) days after the public works contract is awarded.

FORM WH-38 "PAYROLL/CERTIFIED STATEMENT" This form will be provided to the prime Contractor at the time the contract is awarded with instructions to the prime Contractor to provide copies of the form to every Subcontractor on the project. Contractors may use their own forms to submit payroll information, but they must attach this revised WH-38 with the completed shaded agency information together with the signed certified statement information on the back.



Special Provisions: General City Shop Project

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CITY SHOP PROJECT

G-1 WORK INVOLVED

The project consists of the following: Provide and assemble a fully constructed steel building to be located at

2551A 23rd Avenue in Forest Grove, Washington County, Oregon. The design and construction shall conform to applicable International Building Codes, as may be amended by the State of Oregon.

The general contractor’s scope will include, but not necessarily be

limited to: • Provide final stamped plans, specifications and calculations for structural

engineer’s foundation design. • Provide erection of pre-engineered steel mixed-use steel building,

measuring 40’ x 125’. • The building will include equipment storage spaces, overhead doors,

interior and exterior lighting (including service extension), HVAC, electrical and other incidentals necessary for delivery of a finished product.

• Pour all concrete footings and slab. • Tie all steel and set all anchor bolts per manufacturer’s and structural

engineer’s design. • Install all steel doors and other related hardware. • Install 3’ high-rib steel roof. • Provide a schedule for delivery the building and erecting the structure. • General Contractor’s Work to include:

o Construction of all footings and a reinforced concrete slab including a standard vapor barrier for commercial building slabs. Foundation and slab shall be designed by the General Contractor hired structural engineer. All details of the structure shall be determined by general contractor hired structural engineer Provide light brush finish to slab.

o Set all anchor bolts. o Coordinate special inspection services with the City’s geotechnical

engineer\inspector. o Place building shell and all doors; assume standard metal doors.

Overhead doors to be provided by the General Contractor with the building package.

o Roof pitch shall be 2:12. o Insulation: R-19 (6”) roof insulation, and R-13 (4”) wall insulation. o The general contractor shall supply and install a HVAC system

capable of sustaining a constant temperature of 60 deg. F year round. HVAC system shall include controls that can vary the temperature as needed.


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o The contractor shall supply a lighting system for the building using 100 ceiling mount fixtures on a 10 foot spacing grid with an automatic shutoff/on motion detection system. Exterior lighting will include lights at the two westerly corners of the building and above each overhead door.

o General Contractor will provide the following: Dumpster Final Cleaning Temporary fencing shall be set up by the General Contractor Security; site is within the City’s property, but GC should

secure their tools, etc. for the duration of the project.

The City will provide temporary power supply to the General Contractor for small tools, etc. The General Contractor should provide power for any tools that use large amounts of power\electricity.

• Temporary heat • Temporary lighting • Portable toilet

City\Owner will complete the following work:

• Process building related permits for the project including: civil site work, building and structural design, HVAC, electrical, and plumbing, if necessary. All plans to be prepared by general contractor’s engineer. Contractor will be responsible for securing any other required permits.

• The contractor and its building vendor shall coordinate with the City’s Building Official on applicable building code requirements prior to developing final architectural/structural drawings or other related drawings to be submitted for building/electrical/plumbing/mechanical permit purposes. A proposed floor plan is included and attached to this document. The geotechnical analysis completed by Carlson Geotechnical, dated July 11, 2019, summarizes subsurface findings and their recommendations for footings\foundations. During this process, the City will act as a resource to assist the contractor during plan development.

• The City will provide a laydown area for the contractor on site during construction. Contractor will be responsible for clean-up of the area during and at completion of the project.

G-2 COMMENCEMENT AND COMPLETION OF WORK Work shall be commenced by the Contractor in accordance with Section 5

of the General Conditions and shall be completed in all respects within ninety (90) calendar days, excluding holidays.

The Contractor shall submit a detailed schedule of work indicating

contemplated commencement and completion dates for each of the major items of work to the Engineer for approval.


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In accordance with Section 00180.70 of the most recent Oregon Standard

Specifications for Construction, except as herein specified, the Engineer will have the authority to suspend the work wholly or in part for cause including but not limited to conditions considered unsuitable for the performance of the work. Such suspension shall not be cause for additional or extra compensation to the Contractor.

Protection of the work: The Contractor shall be fully responsible for

protecting all portions of his work during the life of this contract including suspensions thereof and until acceptance of the contract work, except as follows:

1. If the Contractor has wholly completed all the planned work

between specific limits and to the satisfaction of the Engineer, the Contractor may request that a partial relief from maintenance be granted to him by the City for the completed portion only. Upon the request of the Contractor, the Engineer may relieve him of the duty of maintaining and protecting certain portions of the work as described below, which have been completed in all respects in accordance with the requirements of the contract and to the satisfaction of the Engineer, and thereafter except with his consent, the Contractor will not be required to do further work thereon except for any defects in workmanship or materials.

2. The warranty period of one (1) year will begin at the time the City accepts the maintenance responsibility on a completed section of work only. In addition such action by the Engineer will relieve the Contractor of responsibility for any injury or damage to said completed portions of the work resulting from use by public traffic or from the action of the elements or from any other cause but not from injury or damage resulting from the Contractor's own operations or from his negligence.

3. Nothing contained herein will relieve the Contractor or his surety of any public liabilities or claims relating to or resulting from the contract as a whole.

4. No extra or additional compensation will be paid to the Contractor

for the protection of his work during the life of this contract including suspensions thereof.

Maintenance during suspensions shall be in accordance with Section

00180.70 of the most recent Oregon Standard Specifications for Construction, except as herein specified. If the suspension of the work is due to the winter seasonal conditions, the Contractor shall place in a maintainable condition any completed portion of the road bed, connecting roads, detours and driveways as are necessary to accommodate traffic as directed by and to the satisfaction of the Engineer. The Contractor shall maintain such facilities on a regular basis during the suspension of the work and as otherwise directed by the Engineer. All costs


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related to constructing and maintaining the roadway in an acceptable manner to accommodate traffic during such a suspension shall be borne by the Contractor and no additional compensation shall be made therefore. Costs to be borne by the Contractor shall include, but not be limited to placing and removing temporary facilities, restoration of the work area following suspensions; any costs relating to shut down, idle equipment or labor, together with costs of remobilization and startup.

In the event work is suspended by the Engineer, such work shall remain

suspended until the Engineer authorizes in writing that the work may proceed. The Contractor shall recommence the work within ten (10) days of receiving such written authorization.

There shall be no additional compensation paid due to any inflation of

costs incurred by the Contractor for materials, labor or equipment used in the work during the life of this contract or suspension thereof for the time specified herein.

G-3 FAILURE TO COMPLETE THE WORK IN THE TIME AGREED UPON

It is agreed by the parties to the contract that failure to complete the work

or any part thereof in the time agreed upon in the contract, or within such extra time as may have been allowed for delays or extensions granted as provided in the contract, will cause damage to the City of Forest Grove, and that it is actual damage which the City will sustain the event or and by reason of such delay, and it is therefore agreed that the Contractor will pay to the City of Forest Grove the sum determined from Section 5.3 of the General Conditions, for every day including Saturdays, Sundays and holidays that the contract remains uncompleted after the date required for completion, and it is agreed that said amounts will be deducted from any money due the Contractor under his contract and the Contractor and his sureties shall be liable for any excess.

G-4 PERIODIC PAYMENTS

The Contractor shall submit a monthly estimate of the work performed

together with an invoice by the last day of each calendar month for ninety-five (95) percent of the value of the work performed through the last day of that same calendar month, less the aggregate of previous payments, based on accepted unit prices in the bid proposal. The estimate of work performed shall be reviewed by and subject to the approval of the Engineer. The invoice amount will be paid in accordance with Section 6.1 of the General Conditions following approval of the Engineer. Quantities used in computing partial payments shall be considered as estimates only and shall be subject to revisions in following estimates. Work completed as estimates shall be an estimate only and no inaccuracy or error in said estimate shall operate to release the Contractor or any bondsman from damages arising from such work or from the enforcement of each and every provision of this contract, and the City shall have the right subsequently to correct any error made in any previous estimate for payment. Materials delivered but not incorporated or installed in the work, will not be included in progress estimates and/or payments. The Contractor shall not be entitled to receive any monthly


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payments under this section of the specifications as long as any lawful or proper direction concerning the work or any portion thereof, given by the City Engineer shall remain un-complied with.

G-5 SPECIFICATIONS AND PLANS

The work shall be constructed in accordance with the set of foundation,

grading, structural, electrical and building supplier plans to be issued, as well as any Special Provisions and Technical Specifications and in accordance with the most recent Oregon Standard Specifications for Construction published by Oregon Department of Transportation.

The order of precedence will be as follows: Special Provisions, Technical

Specifications, Project Plans, and the most recent Oregon Standard Specifications for Construction, and any modifications thereof.

The official project plans and standard plans, profiles, typical cross

sections, working drawings and supplemental drawings, or reproductions thereof, approved by the Engineer, which show the location, character, dimensions, and the details of the work to be performed are to be considered as a part of the plans and the contract whether or not reproduced in these specifications.

G-6 SUBCONTRACTORS

Subcontractors must be qualified to perform that portion of the work which

they perform. It is the intention of this contract and of the City that not more than fifty

(50) percent of the work shall be subcontracted. Any subcontract shall contain a reference to the agreement between the City and the principal Contractor and the terms of that agreement and all parts thereof shall be made a part of such subcontract insofar as applicable to the work covered thereby. All work or material furnished by a Subcontractor shall be guaranteed by the Contractor and the Contractor shall be responsible therefore.

The Contractor shall be required to perform a minimum of fifty (50) percent

of the work with his own forces and employees. The Contractor shall be responsible for the satisfactory completion of all items of work whether performed by his own forces or by subcontract.

Nothing in these Contract Documents shall be construed to imply a

contractual relationship between the City and any Subcontractor engaged by the Contractor. The Contractor agrees that it is fully responsible to the City for all acts of his Subcontractors, material suppliers, employees and indirect employees.


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G-7 SUPERINTENDENCE The Contractor shall keep on this work, during its progress, a competent

superintendent and any necessary assistants, all satisfactory to the Engineer. The superintendent shall not be changed except with the Engineer's consent unless the superintendent proves to be unsatisfactory to the Contractor or otherwise ceases to be in his employ. The superintendent shall represent the Contractor in his absence and all directions given to him shall be binding as if given to the Contractor. The Contractor shall furnish the Engineer the names and telephone numbers of two responsible employees, one of whom may be reached at all times that the work is not in progress, to be called in case of any emergency on the work.

G-8 WORK LIMITS

The Contractor shall confine all his operations to within City of Forest

Grove Right-of-Way as shown on the plans, except as may be otherwise approved by the Engineer.

Stockpiling of materials and storage of materials and equipment on

property other than the City of Forest Grove's shall be subject to the written approval of the property owner and submitted to the Engineer. All related restoration work on public right-of-way and private property shall be performed in a good and workmanlike manner.

G-9 SCHEDULE AND COORDINATION OF WORK

The Contractor shall submit a detailed schedule of work indicating

contemplated Commencement and completion dates for each major item of work. All work shall be scheduled and performed in such a way as to cause a

minimum of Inconvenience to the public. Once any item of work is begun it shall be diligently and continuously pursued to completion.

The Contractor's proposed project schedule will be reviewed and

approved or returned for revisions within five (5) days after receipt by the Engineer.

If required by the Engineer, the Contractor shall submit supplementary

progress schedules which shall be in the form described above to indicate the approximate percentage of work scheduled for completion at any time.

The approved schedule of work shall be complied with, unless otherwise

approved in writing by the Engineer.

G-10 TRAFFIC CONTROL AND DETOURS DURING CONSTRUCTION

The Contractor shall furnish, install and maintain all traffic and pedestrian control devices, methods, barricades, warning devices, signing, flagging, etc. as may be needed for the safe passage of traffic and in accordance with the current


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"Manual on Uniform Traffic Control Devices for Streets and Highways, U.S. Department of Transportation".

Vehicle traffic through the work area shall be permitted to the fullest extent

possible. One lane of traffic shall be open at all times. During all non-operational hours the Contractor shall maintain foot and

vehicle traffic free of obstructions and open to public travel as much as possible in and around the work area. Advance warning and advisory signs shall be required around the working area.

The Contractor shall coordinate directly with the Engineer or his

representative for the purpose of advising them of scheduled construction and reducing impact on owner’s access.

To the fullest extent possible during construction and during all non-

operational hours, the Contractor shall maintain access to all driveways, sidewalks and parking areas in the vicinity of construction. At the end of each day's operations, the Contractor shall provide safe and adequate access to all driveways and parking areas all to the satisfaction of the Engineer and no additional compensation will be made therefore.

G-11 CONTRACTOR'S TRAFFIC AND MATERIALS DELIVERY

All of the Contractor's traffic using various streets and highways shall be

within the statutory requirements of the State of Oregon. To the fullest extent possible the Contractor's traffic shall enter and exit the work areas by the most direct routes, all to the satisfaction of the Engineer. The City selects specific haul routes based upon the project location.

Tracked equipment shall not be driven on City Roads, but will be

transported to the site by a rubber-tired vehicle designed for such use. Streets, which become dirty as a result of the Contractor's operations and

hauling of materials shall be thoroughly cleaned and/or flushed by the Contractor as directed by the Engineer.

The costs related to complying with these requirements shall be included

in the various bid items of this contract and no additional compensation will be made therefore.

G-12 CONSTRUCTION WATER

Construction water will be made available at no charge to the Contractor

from a fire hydrant, which has been approved by the Engineer located within the Forest Grove City Limits. The Contractor shall furnish, install and maintain an approved hydrant valve for the taking of water. The Contractor shall be responsible for operating, maintaining and protecting the hydrant assembly for the duration of its use.


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The furnishing, hauling and placing of water is not a pay item and the entire work of street cleaning, and other construction uses shall be at the expense of the Contractor. Street cleaning shall also extend to adjacent streets used by the Contractor.

All of the Contractor's costs involved in furnishing, hauling and applying

water shall be included in the prices bid for the various bid items and no separate compensation will be made therefore.

G-13 DAMAGE TO PROPERTY

Any property including existing structures, signs, equipment, piping, pipe

covering, landscaping, grounds, irrigation systems, sidewalks, curbs, gutters, driveways, etc., damaged by the Contractor during the course of his work shall be replaced or repaired by the Contractor in a manner satisfactory to the Engineer and at the Contractor's expense.

G-14 PROTECTION OF WORK

The Contractor shall be responsible for any damage to any work covered

by these specifications before the final acceptance of his work. He shall securely cover all openings into the drainage, water and sanitary systems and cover all apparatus, equipment and appliances, both before and after being set in place to prevent damage, breakage, misuse or disfigurement of any work, materials or equipment.

G-15 DISPOSAL OF MATERIALS

All broken Portland Cement Concrete, asphalt concrete, vegetation,

excess earth, debris, street sweepings and other unsuitable materials shall be removed from the job site and disposed of by the Contractor all to the satisfaction of the Engineer. The Contractor shall be responsible for providing his own disposal site at his own expense. The Contractor shall acquire written permission from the owner of any disposal site selected by the Contractor that is within the Urban Growth Boundary of the City of Forest Grove. A copy of that written permission shall be furnished to the Engineer for approval. All costs related to disposal sites, scheduling, hauling, etc. shall be compensated for under the bid items of this contract and no separate compensation shall be made therefore.

G-16 INSPECTION AND TESTING

All work shall be to the satisfaction of the Engineer. Testing shall be as specified in the Technical Specifications. The Contractor shall notify the Engineer forty-eight (48) hours in advance

of the time work shall start.


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The Contractor shall inform the City Engineer well in advance of the work

as to the source of all materials proposed to be used in the work. Samples of materials shall be made available for testing as required by the Engineer, prior to starting work and during the course of the work.

The Contractor shall have no cause for claim against the City for delays

involved in the testing of materials or the evaluation of such test and no compensation will be made therefore. Cost of initial testing of materials, other than testing required as part of the Technical Specifications contained herein, shall be borne by the City. In the event of any failing test, the cost of retesting shall be borne by the Contractor.

G-17 MATERIAL AT JOB SITE

The Contractor shall notify the Engineer well in advance of bringing any

materials on the job so that they may be checked or tested for compliance with specifications.

Materials brought on the site without prior acceptance may be ordered off

the work and the Contractor will not be entitled to any time extension or remedy for time lost while waiting for, making and obtaining of tests.

Materials for which the source was approved but which do not conform to

specifications when delivered at the job may be rejected. When doubt as to compliance with specifications exists, compliance with specification will be checked by test and the decision by the City Engineer as to the suitability of the material will be final.

G-18 CERTIFICATES OF COMPLIANCE

The suppliers of the following items shall, prior to the work, certify that

each item is in full compliance with the City of Forest Grove Specifications for CITY SHOP and the most recent Oregon Standard Specifications for Construction:

Rigid and Flexible Electrical Conduit Crushed Aggregate Base, Bedding, and Backfill Materials Portland Cement Concrete

G-19 LINES AND GRADES Initially the Engineer will provide lines and grades to the extent deemed

necessary by the Engineer for the construction. It shall be the Contractor’s responsibility to see that the finished work

conforms to the lines, grades, and benchmarks given by the Engineer. The


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Contractor shall establish supplementary benchmarks, elevations, lines and grades, and any other necessary horizontal and vertical controls which are not established by the Engineer and which are necessary to complete the earth work and finished grading of subgrade, aggregate base, sidewalk areas, slopes and ditches. The cost to the Contractor for laying out the work as described shall be included in the prices bid for the various scheduled items. The Contractor shall exercise care in the preservation of stakes and benchmarks set for his or the Engineer's use. If any such stakes or benchmarks are damaged, lost, displaced, or removed by the Contractor or by others, the Contractor shall have them reset at his expense or the City will have it done and the cost thereof will be billed to the Contractor at the actual hourly or per diem rates.

G-20 SANITARY FACILITIES

The Contractor shall provide on-site restroom facilities for employees.

Such facilities shall be maintained in a clean and sanitary condition. The cost of sanitary facilities shall be included in the various bid items and no other compensation will be made therefore.

G-21 CHANGES AND EXTRA WORK

The City reserves the right to require changes or extra work and the

Contractor shall perform such changes or extra work upon written authorization and specifications as to the amount and method of compensation as hereafter provided.

The City also reserves the right to adjust the amount of work based on

available funds.

1. What constitutes a "change" or "extra work"?

a. A variation between estimated and actual quantities of work or material required to construct a project in accordance with the Plans and Specifications as they exist at the time the bids are opened, does not constitute a change or extra work; does not require additional authorization, and the said quantities shall be paid for at the unit or lump sum prices established in the bid.

b. A variation between definite quantities of work or material specified in the Plans and Specifications as they exist at the time bids are opened and upon which quantities unit prices are bid and the quantities required under revised or modified Plans and Specifications, is a change.

c. The furnishing of material or performance of work for which unit prices

have been bid on the basis of estimated quantities, but which materials


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or work is required to be done under revised of modified Plans and Specifications, is a change.

d. Revisions or modifications of the Plans and Specifications such as, but

not limited to, those affecting designs or materials, installation of construction, shapes, dimensions or locations are changes.

e. Supplying work or material for which no unit prices have been bid and

which are not included in the Plans and Specifications as they exist at the time bids are opened but which are required under revised or modified Plans and Specifications is extra work.

f. Contract time extensions requested by the City of Forest Grove.

2. Contractor shall not be entitled to any additional compensation for change or

extra work unless the same has been authorized in writing (hereafter referred to as "change order" or "order for extra work") which describes the change or extra work to be done and the amount and method of compensation therefore hereafter provided. No change order or order for extra work shall be valid unless dated and signed by the Contractor (or by his agent previously authorized in writing delivered to the City to execute said change order or order for extra work) and the authorized representative of City as hereafter provided.

3. Amount and method of compensation.

a. The quantities shown in the schedule of items are estimates only. Payment will be made for the actual quantity of work completed in accordance with these Specifications. The unit bid prices shall apply to all quantities within plus or minus 25 percent of the estimated quantities. Quantities in excess of the 25 percent variation shall be considered as a change and may be subject to adjusted unit prices.

b. When a variation is made for which no bid items were specified, compensation therefore shall be at unit prices or lump sum agreed to by the parties.

c. In the event that unit prices or a lump sum cannot be agreed to, then

compensation shall be computed on a "cost plus" basis as follows:

i. Cost plus. 1. Cost plus is defined to be the sum of the amounts allowable

under following subparagraphs (a), (b) and (c).


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a. Reimbursement for expenditures made by the Contractor directly attributable to the performance of the extra work, including additional premiums on Faithful Performance and Labor and Materialmen's Bonds, Workers Compensation and Indemnity Insurance and Social Security.

b. A reasonable allowance for the use of shop and field equipment furnished by the Contractor, in conformity with the prevailing rate charged by local Contractors for similar equipment, but in no case will any allowance be made for office expense, general superintendence or other general expenses except as provided in the following subparagraph (c).

c. An allowance of fifteen (15) percent of the sums

allowable under the foregoing subparagraphs (a) and (b) for profit, superintendence and general expenses except that this percentage shall not be allowed on payments to Subcontractor for work of a character normally done by the Contractor.

2. The amount but not the price of all changes or extra work

performed shall be entered upon report sheets, furnished by the Engineer, and signed by both parties, which daily reports shall thereafter be considered the true record of extra work done. All claims of the Contractor for compensation for changes or extra work shall be made in the form of itemized invoices in triplicate and shall be presented together with the data set forth below within thirty (30) days after the close of the calendar month during which the extra work or materials covered by such claim is alleged to have been furnished.

3. The Contractor shall permit an examination by the Auditor of the City of Forest Grove of all accounts bills and vouchers relating to the extra work and claims shall be paid in the course of business only to the extent that expenditures are provable by the Contractor.

4. The Contractor shall furnish the following data in support of cost plus invoices.

a. Labor: Labor charges must be supported by a

certified copy of the Contractor's payrolls, showing:


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employee's name, employee's labor classification, hours worked each day, total hours worked during the pay period, hourly rate, gross earnings and fringe benefits and taxes.

b. Materials: Material charges must be supported by suppliers' original invoices marked "paid" with the suppliers' name, per the name or initials of the individual receipting the invoice.

Cash and trade discounts allowed by the supplier must be deducted from the invoice amount. Invoice in turn must be supported by original delivery tickets showing receipt of materials and signatures of Contractor's representative. In the case of materials withdrawn from the Contractor's own stock, a typed list of such materials must be presented on the Contractor's billhead or letter head showing: quantities, unit (each, pound, dozen, etc.), description of articles, unit cost (including applicable sales taxes), and amount. All charges for such materials shall be supported by Contractor’s receipted delivery tickets approved by the Engineer.

c. Equipment. All equipment charges shall be made in accordance with prevailing "bare" rates. All equipment charges used in the performance of the work must be itemized to show type of equipment, capacity (for trucks, compressors, etc.), operating time, rate and amounts.

d. Small Tools: The City will not pay for the cost of small tools used in the work but shall make a reasonable allowance for the use of such tools. Claims for this allowance must be approved by the Engineer.

e. Insurance: Charges for workers compensation and other insurance must be supported by a breakdown showing the rate for each type of insurance. Social Security taxes must not be charged where an employee's earnings have exceeded the taxable maximum.


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4. Authorization by City:

a. Except as hereafter provided, all change orders or orders for extra work must be authorized by the City and executed by the City Manager or his representative.

b. Provided, however, Engineer, with approval of the City Manager shall be authorized to execute a change order or order for extra work without the necessity of obtaining a resolution of the City Council in the following case:

i. Where the individual change or extra work does not exceed a

cost of fifty thousand dollars ($ 50,000); and,

ii. Provided that the aggregate of individual changes or extra work so authorized for the contract shall not exceed a total of fifteen (15) percent of the amount of the contract.

5. Payment for changes and extra work shall be made at the time and in the

manner provided for payment of the contract work in general, unless otherwise authorized by the City Council.

6. Changes and extra work may be made by the City without notice to the Contractor's sureties, and shall not relieve the sureties of any obligation under their bonds.

It shall be the responsibility of the Contractor before proceeding with any change to satisfy himself that the change has been properly authorized in behalf of the City. No charge for extra work or any other change in the contract will be allowed unless the extra work or change has been authorized in writing by the City, and the compensation or method thereof is stated in such written authority.

G-22 NOTICE OF POTENTIAL CLAIM The Contractor shall not be entitled to any additional compensation

otherwise payable or contract time extension for any act or failure to act by the City, the happening of any event or occurrence, or any other cause, unless Contractor shall have given the Engineer a written notice of potential claim.

The written notice of potential claim shall set forth the reasons for which

the Contractor believes additional compensation will or may be due, the nature of the costs involved and, insofar as possible, the amount of the potential claim. If based on an act or failure to act by the Engineer or the City, except in case of emergency, such notice shall be given to the Engineer prior to the time that the


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Contractor has started performance of the work giving rise to the potential claim for additional compensation.

In all other cases, notice shall be given within ten (10) days after the

happening of the event or occurrence giving rise to the potential claim; if the Contractor intends to assert a claim for an equitable adjustment under this clause, he must, within thirty (30) days after such aforesaid event or occurrence, submit to the City a written statement setting forth the general nature and monetary extent of such claim. No claim shall be considered beyond these time requirements unless this period is extended by the City.

No claim by the Contractor for an equitable adjustment hereunder shall be

allowed if asserted after acceptance of final payment under this contract. It is the intention of this section that differences between the parties arising

under and by virtue of the contract shall be brought to the attention of the Engineer at the earliest possible time in order that such matters may be settled, if possible, or other appropriate action promptly taken.

G-23 CITY'S RIGHT TO WITHHOLD CERTAIN AMOUNTS

The City may withhold from payments to the Contractor, in addition to

retained percentage, such an amount or amounts as may be necessary to cover:

1. Payments that may be earned or due for just claims for labor or materials furnished in and about the work;

2. Defective work not remedied; 3. Failure of the Contractor to make proper payments to a Subcontractor; 4. Reasonable doubt that this contract can be completed for the balance then

unpaid; 5. Damage to another Contractor, where there is evidence thereof.

The City will disburse and shall have the right to act as agent for the Contractor in disbursing such funds as have been withheld pursuant to this paragraph to the party or parties who are entitled to payment there from. The City will render to the Contractor a proper accounting of all such funds disbursed on behalf of the Contractor. Nothing contained herein shall give or bestow any rights on any persons who are not signatory to that contract.


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G-24 ACCEPTANCE OF WORK AND FINAL PAYMENT The acceptance of the work on behalf of the City shall be made by the City

Engineer. Such acceptance shall not constitute a waiver of guarantee by the City. Within 30 days of acceptance by the City Engineer, there shall be paid to the Contractor a sum equal to 100 percent of the contract price less the aggregate of previous payments.

The acceptance by the Contractor of final payment shall be and shall

operate as a release to the City of all claims and all liability to the Contractor other than claims in stated amounts as may be specifically excepted by the Contractor for all things done or furnished in connection with this work and for every act and neglect of the City and others relating to or arising out of this work. Any payment, however, final or otherwise, shall not release the Contractor or its sureties from any obligations under the contract documents or the performance and payment bonds.

Payment at the contract price shall include full compensation to the

Contractor for all labor, materials (except as otherwise expressly provided herein), equipment use and expense required for or incidental to the completion of the work in accordance with the drawings and specifications and to the satisfaction of the Engineer.

In case of suspension of the contract, any unpaid balance shall be and

become the sole and absolute property of the City of Forest Grove to the extent necessary to repay to the City any excess in the cost of the work above the contract price.

G-25 NO WAIVER OF LEGAL RIGHTS

Should an error be discovered in or payment of unauthorized work be

made by the final estimate or should dishonesty on the part of the Contractor be discovered in the work, the City reserves the right, after the final payment has been made, to claim and recover the overpayment, or to make good the defects in the work resulting from the Contractor's dishonesty.

G-26 FINAL GUARANTY

All infrastructure, surfacing materials, Pedestrian Signal equipment,

installation, and site restoration work shall be and is guaranteed by the Contractor for a period of one year from and after the date of conditional acceptance of all work by the City.

If, within said guaranty period, repairs or changes are required in

connection with guaranteed work, which in the opinion of the Engineer, is rendered necessary as the result of the use of materials, equipment or workmanship which are inferior, defective, or not in accordance with the terms of


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the contract, the Contractor shall promptly upon receipt of notice from the City, and without expense to the City: (a) place in satisfactory condition in every particular all of such guaranteed work, correct all defects there; and (b) make good all damage to the building or site, or equipment or contents thereof, which in the opinion of the Engineer, is the result of the use of materials, equipment or workmanship which are inferior, defective, or not in accordance with the terms of the contract; and, (c) make good any work or material, or the equipment and contents of building, structure or site disturbed in fulfilling any such guaranty.

If the Contractor, after notice, fails within ten (10) days to proceed to

comply with the terms of this guaranty, the City may have the defects corrected, and the Contractor and his surety shall be liable for all expense incurred, provided, however, that in case of an emergency where in the opinion of the Engineer, delay would cause serious loss or damage, repairs may be made without notice being given to the Contractor and the Contractor shall pay the costs thereof.

G-27 CERTIFICATE OF INSURANCE

The Contractor shall furnish the Certificate of Insurance in the amount

hereinafter specified for public liability and property damage. The City of Forest Grove shall be named as the insured on the certification.

G-28 EXCAVATION, TRENCHING AND SHORING

All excavation, trenching and shoring shall comply with Oregon

Occupational Safety and Health Code Division 83, Construction (Oregon Administrative Rules, Chapter 437).

The Contractor shall comply with the Specific Trenching Requirements,

Sec. 437-83-3539 through 437-83-3593. For all excavations in excess of five (5) feet in depth, the Contractor shall designate in writing the specific means of protection to be used; or, may submit alternative means which have been designed and certified by a registered civil engineer in the State of Oregon for the review and approval of the City Engineer.

The Contractor shall certify in a written form acceptable to the City his/her

knowledge of and compliance with all such O.S.H.A. safety requirements. Nothing herein contained shall be construed to relieve the Contractor in

any way from his/her full responsibility for all construction operations, the safety of the workers and public, nor the full compliance with any and all applicable safety regulations and statutes.

All costs related to the required safety compliance and shoring, etc. shall

be included in the various bid items and no compensation shall be made therefore.


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G-29 STORAGE AREAS AND RESTORATION If the Contractor elects to make arrangements for storage areas, he shall

furnish copies of written approval by the property owner(s) to the Engineer. All related restoration work shall be performed in a workmanlike manner at the Contractor's expense.

GEOTECHNICAL INVESTIGATION REPORT

Carlson Geotechnical P.O. Box 230997, Tigard, Oregon 97281

Carlson Geotechnical A Division of Carlson Testing, Inc. Phone: (503) 601-8250 Fax: (503) 601-8254

Bend Office Eugene Office Salem Office Tigard Office

(541) 330-9155 (541) 345-0289 (503) 589-1252 (503) 684-3460

G1905091 Geotechnical Investigation

Report of

Geotechnical Investigation

Public Works Shop Building

2551 23rd Avenue

Forest Grove, Oregon

CGT Project Number G1905091 Prepared for Mr. Jesse Vanderzanden City of Forest Grove P.O. Box 326 Forest Grove, Oregon 97116-0326 July 11, 2019

[email protected]

[email protected]

mailto:[email protected]



CGT Project Number G1905091

July 11, 2019

Carlson Geotechnical Page 3 of 21

TABLE OF CONTENTS

1.0 INTRODUCTION .................................................................................................................................... 4 1.1 Project Information ........................................................................................................................... 4 1.2 Scope of Services ............................................................................................................................. 4

2.0 SITE DESCRIPTION .............................................................................................................................. 5 2.1 Site Geology ...................................................................................................................................... 5 2.2 Site Surface Conditions ................................................................................................................... 5 2.3 Subsurface Conditions .................................................................................................................... 5

3.0 SEISMIC CONSIDERATIONS ............................................................................................................... 6 3.1 Seismic Design ................................................................................................................................. 6 3.2 Seismic Hazards ............................................................................................................................... 7

4.0 CONCLUSIONS ..................................................................................................................................... 8 5.0 RECOMMENDATIONS .......................................................................................................................... 9

5.1 Site Preparation ................................................................................................................................ 9 5.2 Temporary Excavations ................................................................................................................. 10 5.3 Wet Weather Considerations ......................................................................................................... 11 5.4 Structural Fill ................................................................................................................................... 12 5.5 Shallow Foundations ...................................................................................................................... 14 5.6 Floor Slabs ...................................................................................................................................... 15 5.7 Pavements ....................................................................................................................................... 16 5.8 Additional Considerations ............................................................................................................. 19

6.0 RECOMMENDED ADDITIONAL SERVICES ...................................................................................... 20 6.1 Design Review ................................................................................................................................. 20 6.2 Observation of Construction ......................................................................................................... 20

7.0 LIMITATIONS ....................................................................................................................................... 20

ATTACHMENTS

Site Location ........................................................................................................................................... Figure 1 Site Plan ................................................................................................................................................. Figure 2 Site Photographs .................................................................................................................................... Figure 3 Subsurface Investigation and Laboratory Testing ............................................................................. Appendix A




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1.0 INTRODUCTION

Carlson Geotechnical (CGT), a division of Carlson Testing, Inc. (CTI), is pleased to submit this report summarizing the results of our geotechnical investigation for the proposed Public Works Shop Building project. The site is located at 2551 23rd Avenue in Forest Grove, Oregon, as shown on the attached Site Location, Figure 1.

1.1 Project Information

CGT developed an understanding of the proposed project based on our correspondence with you. We understand the project will consist of the following: Construction of a new, steel-framed vehicular storage building with a slab-on-grade floor. The new

building will measure approximately 40 feet by 120 feet, and will be constructed along the east end of the site. Structural loading was not provided. For the purposes of this report, we have assumed maximum column, continuous wall, and uniform floor slab loads will be on the order of 50 kips, 4 kips per lineal foot (klf), and 250 pounds per square foot (psf), respectively. We understand no below-grade levels (i.e. basements) are planned.

Installation of appurtenant underground utilities and pavements to serve the new building. We anticipate stormwater collected from new impervious areas of the site will be collected and routed to

the nearest storm drain or other suitable discharge point. Accordingly, this report did not include infiltration testing services.

We understand grading will be very minor at this generally level site.

1.2 Scope of Services

Our scope of work included the following:

Contact the Oregon Utilities Notification Center to mark the locations of public utilities within a 20-foot radius of our explorations at the site. CGT also subcontracted a private utility locator service to mark the locations of detectable private utilities within the same radius.

Explore subsurface conditions at the site by observing the excavation of four test pits to depths of up to about 10½ feet below ground surface (bgs). Details of the subsurface investigation are presented in Appendix A.

Classify the materials encountered in the explorations in general accordance with American Society for Testing and Materials (ASTM) D2488 (Visual-Manual Procedure).

Provide a technical narrative describing surface and subsurface deposits, and local geology of the site, based on the results of our explorations and published geologic mapping.

Provide recommendations for the Seismic Site Class, mapped maximum considered earthquake spectral response accelerations, and site seismic coefficients.

Provide a qualitative evaluation of seismic hazards at the site, including earthquake-induced liquefaction, landsliding, and surface rupture due to faulting or lateral spread.

Provide geotechnical recommendations for site preparation and earthwork. Provide geotechnical engineering recommendations for use in design and construction of shallow

foundations, floor slabs, and pavements.




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Provide this written report summarizing the results of our geotechnical investigation and recommendations for the project.

2.0 SITE DESCRIPTION

2.1 Site Geology

Based on available geologic mapping of the area, the site is underlain by Pleistocene catastrophic flood deposits1, originating from glacial outburst floods of Lake Missoula. The flood deposits were produced by the periodic failure of glacial ice dams that impounded Lake Missoula in present day Montana between 18,000 to 15,000 years ago2. Floodwaters raged through Idaho, eastern Washington, and through the Columbia River Gorge. Near Rainier, Oregon, the river channel was restricted, causing floodwaters to back up the Willamette Valley as far south as Eugene. Floodwaters in the Portland area were as much as 400 feet deep, leaving only the tops of the tallest hills dry. The flood deposits are typically split into three different facies: the coarse-grained facies, the fine-grained facies, and the channel facies. The site is mapped in the the fine-grained facies (Mff). The fine-grained Missoula flood deposits typically consist of silt, clay, and fine- to coarse-grained sand. Beds are generally poorly defined and thin (less than 3 feet thick). Composite thickness is typically up to 115 feet.

2.2 Site Surface Conditions

The approximate 4.16-acre site was bordered by 23rd Avenue to the south, Elm Street to the west, an apartment building to the north, and light industrial development to the east. The relatively level site was occupied by the City of Forest Grove Public Works administration building and several steel-framed outbuildings. The area of the proposed building was mostly gravel-surfaced. Site layout and surface conditions at the time of our field investigation are shown on the attached Site Plan (Figure 2) and Site Photographs (Figure 3).

2.3 Subsurface Conditions

2.3.1 Subsurface Investigation & Laboratory Testing

Our subsurface investigation consisted of four test pits (TP-1 through TP-4) completed on June 28, 2019. The approximate exploration locations are shown on the Site Plan, attached as Figure 2. In summary, the test pits were excavated to depths ranging from about 9½ to 10½ feet bgs. Details regarding the subsurface investigation, logs of the explorations, and results of laboratory testing are presented in Appendix A. Subsurface conditions encountered during our investigation are summarized below.

2.3.2 Subsurface Materials

Logs of the explorations are presented in Appendix A. The following describes each of the subsurface materials encountered at the site.

1 Ma, Madin, Duplantis, and Williams, 2012, Lidar-based Surficial Geologic Map and Database of the Greater Portland, Oregon,

Area, Clackamas, Columbia, Marion, Multnomah, Washington, and Yamhill Counties, Oregon, and Clark County, Washington Oregon Department of Geology and Mineral Industries Open-File Report O-12-02.

2 Allen, John Eliot, Burns, Marjorie, and Burns, Scott, 2009. Cataclysms on the Columbia, The Great Missoula Floods, Revised Second Edition: Ooligan Press, Portland State University.




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Undocumented Poorly Graded Gravel with Silt Fill (GP Fill)

Undocumented poorly graded gravel fill was encountered at the surface in all four test pits, TP-1 through TP-4. Undocumented fill refers to materials placed without (available) records of subgrade conditions or evaluation of compaction. The fill was typically gray-brown, moist, angular, and up to about ¾-inch in diameter, with low plasticity fines. This soil extended to depths of about ½ to 1 foot bgs in the test pits. Undocumented Silty Gravel Fill (GM Fill)

Undocumented silty gravel fill was encountered below the poorly graded gravel fill in test pits TP-1 and TP-2, and extended to a depth of approximately 1 foot bgs. The fill was generally brown, moist, round to subrounded, up to 1½ inches in diameter, and included low plasticity fines. Native Silt (ML)

Silt was encountered below the undocumented fill in all four of the test pits and extended to the full depths explored, approximately 9½ to 10½ feet bgs. This soil was generally very stiff to hard, brown, moist, and exhibited low to medium plasticity. The native silt was consistent with the fine-grained flood deposits described in Section 2.1 above.

2.3.3 Groundwater

We did not encounter groundwater within the depths explored on June 28, 2019. To determine approximate regional groundwater levels in the area, we researched well logs available on the Oregon Water Resources Department (OWRD)3 website for wells located within Section 31, Township 1 North, Range 3 West, Willamette Meridian. Our review indicated that groundwater levels in the area generally ranged from about 10 to 30 feet bgs. It should be noted groundwater levels vary with local topography. In addition, the groundwater levels reported on the OWRD logs often reflect the purpose of the well, so water well logs may only report deeper, confined groundwater, while geotechnical or environmental borings will often report any groundwater encountered, including shallow, unconfined groundwater. Therefore, the levels reported on the OWRD well logs referenced above are considered generally indicative of local water levels and may not reflect actual groundwater levels at the project site. We anticipate that groundwater levels will fluctuate due to seasonal and annual variations in precipitation, changes in site utilization, or other factors. In addition, the native silt (ML) is conducive to the formation of perched groundwater.

3.0 SEISMIC CONSIDERATIONS

3.1 Seismic Design

Section 1613.3.2 of the 2014 Oregon Structural Specialty Code (2014 OSSC) requires that the determination of the seismic site class be based on subsurface data in accordance with Chapter 20 of the American Society of Civil Engineers Minimum Design Loads for Buildings and Other Structures (ASCE 7). Based on the results of the explorations and review of geologic mapping, we have assigned the site as Site Class D for the subsurface conditions encountered.

3 Oregon Water Resources Department, 2019. Well Log Records, accessed June 2019, from OWRD web site:

http://apps.wrd.state.or.us/apps/gw/well_log/.

http://apps.wrd.state.or.us/apps/gw/well_log/




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Earthquake ground motion parameters for the site were obtained in accordance with the 2014 OSSC using the Seismic Hazards by Location calculator on the ATC website4. The site Latitude 45.524610° North and Longitude 123.100877° West were input as the site location. The following table shows the recommended seismic design parameters for the site.

Seismic Ground Motion Values

Parameter Value

Mapped Acceleration Parameters Spectral Acceleration, 0.2 second (Ss) 1.007g

Spectral Acceleration, 1.0 second (S1) 0.465g

Coefficients

(Site Class D)

Site Coefficient, 0.2 sec. (FA) 1.097

Site Coefficient, 1.0 sec. (FV) 1.535

Adjusted MCE Spectral

Response Parameters

MCE Spectral Acceleration, 0.2 sec. (SMS ) 1.105g

MCE Spectral Acceleration, 1.0 sec. (SM1 ) 0.713g

Design Spectral Response Accelerations Design Spectral Acceleration, 0.2 seconds (SDS ) 0.737g

Design Spectral Acceleration, 1.0 second (SD1 ) 0.476g

Seismic Design Category D

3.2 Seismic Hazards

3.2.1 Liquefaction

In general, liquefaction occurs when deposits of loose/soft, saturated, cohesionless soils, generally sands and silts, are subjected to strong earthquake shaking. If these deposits cannot drain quickly enough, pore water pressures can increase, approaching the value of the overburden pressure. The shear strength of a cohesionless soil is directly proportional to the effective stress, which is equal to the difference between the overburden pressure and the pore water pressure. When the pore water pressure increases to the value of the overburden pressure, the shear strength of the soil approaches zero, and the soil can liquefy. The liquefied soils can undergo rapid consolidation or, if unconfined, can flow as a liquid. Structures supported by the liquefied soils can experience rapid, excessive settlement, shearing, or even catastrophic failure. For fine-grained soils, susceptibility to liquefaction is evaluated based on penetration resistance and plasticity, among other characteristics. Criteria for identifying non-liquefiable, fine-grained soils are constantly evolving. Current practice to identify non-liquefiable, fine-grained soils is based on moisture content and plasticity characteristics of the soils5,6. The susceptibility of sands, gravels, and sand-gravel mixtures to liquefaction is typically assessed based on penetration resistance, as measured using SPTs, CPTs, or Becker Hammer Penetration tests (BPTs). Based on the lack of static groundwater, the soils encountered within our explorations are considered non-liquefiable. However, when adequately saturated (e.g. below the groundwater table) the silty soils are judged

4 Applied Technology Council (ATC), 2019. USGS seismic design parameters determined using “Seismic Hazards by Location,”

accessed July 2019, from the ATC website https://hazards.atcouncil.org/. 5 Seed, R.B. et al., 2003. Recent Advances in Soil Liquefaction Engineering: A Unified and Consistent Framework. Earthquake

Engineering Research Center Report No. EERC 2003-06. 6 Bray, Jonathan D., Sancio, Rodolfo B., et al., 2006. Liquefaction Susceptibility of Fine-Grained Soils, Journal of Geotechnical and

Geoenvironmental Engineering, Volume 132, Issue 9, September 2006.

https://hazards.atcouncil.org/




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potentially liquefiable. The Oregon Department of Geology and Mineral Industries‟ Oregon Statewide Geohazards Viewer7 shows a „low‟ hazard for liquefaction for the site or immediate vicinity. If the property owner wishes to further define the risk of liquefaction at the site, a quantitative liquefaction triggering and settlement analysis could be performed. Such an analysis would require borings using powered drilling equipment, and is outside the scope of this assignment.

3.2.2 Slope Instability

Due to the relatively level topography at and surrounding the site, the risk of slope instability at the site is considered low. The proposed grading includes relatively minimal planned changes in site grades and is not anticipated to significantly increase this risk.

3.2.3 Surface Rupture

3.2.3.1 Faulting

Although the site is situated in a region of the country with known active faults and historic seismic activity, no known faults exist on or immediately adjacent to the site. Therefore, the risk of surface rupture at the site due to faulting is considered low.

3.2.3.2 Lateral Spread

Surface rupture due to lateral spread can occur on sites underlain by liquefiable soils that are located on or immediately adjacent to slopes steeper than about 3 degrees (20H:1V), and/or adjacent to a free face, such as a stream bank or the shore of an open body of water. During lateral spread, the materials overlying the liquefied soils are subject to lateral movement downslope or toward the free face. Based on the relatively level topography at the site and the low potential of liquefiable soils at the site, the risk of damage associated with lateral spread is considered to be low.

4.0 CONCLUSIONS

Based on the results of our field explorations and analyses, the proposed project may be constructed as described in Section 1.1 of this report, provided the recommendations presented later in this report are incorporated into the design and development. Satisfactory subgrade support for planned shallow foundations, floor slabs, and pavements can be achieved by the native, very stiff to better, silt (ML), or structural fill that is properly placed and compacted on this material during construction. This soil was encountered at depths of about 1 foot bgs within the test pits. The existing undocumented fill materials encountered within the explorations were variable in terms of relative density. The existing fill materials are not recommended for subgrade support of building foundations or floor slabs due to the inherent risk of (1) uneven subgrade response once loads are applied, and (2) excessive, long-term, total and differential settlements. CGT recommends the existing fill materials be removed and replaced with structural fill placed and compacted in accordance with the recommendations provided in Section 5.4 below.

7 Oregon Department of Geology and Mineral Industries, 2019. Oregon Statewide Geohazards Viewer, accessed April 2019 from

DOGAMI web site: http://www.oregongeology.org/sub/hazvu/index.htm.

http://www.oregongeology.org/sub/hazvu/index.htm




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The near surface silt (ML) is susceptible to disturbance during wet weather. Trafficability of this soil may be difficult, and significant damage to the subgrade could occur, if earthwork is undertaken without proper precautions at times when the exposed soils are more than a few percentage points above optimum moisture content. In the event that construction occurs during wet weather, CGT recommends that measures be implemented to protect the fine-grained subgrade in areas of repeated construction traffic. Geotechnical recommendations for wet weather construction are presented in Section 5.3 of this report.

5.0 RECOMMENDATIONS

The recommendations presented in this report are based on the information provided to us, results of our field investigation and analyses, laboratory data, and professional judgment. CGT has observed only a small portion of the pertinent subsurface conditions. The recommendations are based on the assumptions that the subsurface conditions do not deviate appreciably from those found during the field investigation. CGT should be consulted for further recommendations if the design of the proposed development changes and/or variations or undesirable geotechnical conditions are encountered during site development.

5.1 Site Preparation

5.1.1 Demolition

Demolition of existing buildings and appurtenant structures should include complete removal of all structural elements, including foundations and concrete slabs. Abandoned buried utilities should similarly be removed or grouted full. Concrete or asphalt concrete debris resulting from demolition activities may be re-used as structural fill, provided they are processed in accordance with the recommendations presented in Section 5.4.1 of this report. Alternatively, demolition debris should be hauled off site for disposal.

5.1.2 Stripping

Existing vegetation, topsoil, rooted soils, and undocumented fill soils should be removed from within, and for a minimum 5-foot margin around, proposed building pad and pavement areas. Based on the results of our field explorations, undocumented fill encountered at the site extended to depths of about 1 foot bgs. These materials may be deeper or shallower at locations away from the completed explorations. The geotechnical engineer‟s representative should provide recommendations for actual stripping depths based on observations during site stripping. Stripped surface vegetation and rooted soils should be transported off-site for disposal, or stockpiled for later use in landscaped areas. Stripped, inorganic fill materials should be transported off-site for disposal, or may be stockpiled for later use as structural fill as described in Section 5.4.1 of this report.

5.1.3 Test Pit Backfills

The test pits conducted at the site were loosely backfilled during our field investigation. Where test pits are located within finalized building, structural fill, or pavement areas, the loose backfill materials should be re-excavated. The resulting excavations should be backfilled with structural fill in conformance with Section 5.4 of this report.

5.1.4 Existing Utilities & Below-Grade Structures

All existing utilities at the site should be identified prior to excavation. Abandoned utility lines beneath the new building, pavements, and hardscaping features should be completely removed or grouted full. Soft, loose, or otherwise unsuitable soils encountered in utility trench excavations should be removed and




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replaced with structural fill in conformance with Section 5.4 this report. Buried structures (i.e. footings, foundation walls, retaining walls, slabs-on-grade, tanks, etc.), if encountered during site development, should be completely removed and replaced with structural fill placed and compacted in conformance with Section 5.4 of this report.

5.1.5 Subgrade Preparation

After site preparation as recommended above, but prior to placement of structural fill and/or aggregate base, the geotechnical engineer‟s representative should observe the exposed subgrade soils in order to identify areas of excessive yielding through either proof rolling or probing. Proof rolling of subgrade soils is typically conducted during dry weather using a fully-loaded, 10- to 12-cubic-yard, tandem-axle, tire-mounted, dump truck or equivalent weighted water truck. Areas of limited access or that appear too soft or wet to support proof rolling equipment should be evaluated by probing. During wet weather, subgrade preparation should be performed in general accordance with the recommendations presented in Section 5.3 of this report. If areas of soft soil or excessive yielding are identified, the affected material should be over-excavated to firm, unyielding subgrade, and replaced with imported granular structural fill in conformance with Section 5.4.2 of this report.

5.1.6 Erosion Control

Erosion and sedimentation control measures should be employed in accordance with applicable City, County, and State regulations.

5.2 Temporary Excavations

5.2.1 Overview

Conventional earthmoving equipment in proper working condition should be capable of making necessary excavations for the anticipated site cuts as described earlier in this report. All excavations should be in accordance with applicable OSHA and state regulations. It is the contractor's responsibility to select the excavation methods, to monitor site excavations for safety, and to provide any shoring required to protect personnel and adjacent improvements. A “competent person,” as defined by OR-OSHA, should be on-site during construction in accordance with regulations presented by OR-OSHA. CGT‟s current role on the project does not include review or oversight of excavation safety.

5.2.2 OSHA Soil Type

For use in the planning and construction of temporary excavations up to 10 feet in depth, an OSHA soil type “B” may be used for the native silt soil (ML) encountered near the surface of the site.

5.2.3 Utility Trenches

Temporary trench cuts should stand near vertical to depths of approximately 4 feet in the native, silt (ML) encountered near the surface of the site. If groundwater seepage undermines the stability of the trench, or if sidewall caving is observed during excavation, the sidewalls should be flattened or shored. Depending on the time of year trench excavations occur, trench dewatering may be required in order to maintain dry working conditions. Pumping from sumps located within the trench will likely be effective in removing water resulting from seepage. If groundwater is encountered, we recommend placing trench stabilization material at the base of the excavations. Trench stabilization material should be in conformance with Section 5.4.3.




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5.2.4 Excavations Near Foundations

Excavations near footings should not extend within a 1½ horizontal to 1 vertical (1½H:1V) plane projected out and down from the outside, bottom edge of the footings. In the event excavation needs to extend below the referenced plane, temporary shoring of the excavation and/or underpinning of the subject footing may be required. The geotechnical engineer should be consulted to review proposed excavation plans for this design case to provide specific recommendations.

5.3 Wet Weather Considerations

For planning purposes, the wet season should be considered to extend from late September to late June. It is our experience that dry weather working conditions should prevail between early July and mid-September. Notwithstanding the above, soil conditions should be evaluated in the field by the geotechnical engineer‟s representative at the initial stage of site preparation to determine whether the recommendations within this section should be incorporated into construction.

5.3.1 Overview

Due to the fines content, the on-site fine-grained silt (ML) is susceptible to disturbance during wet weather. Trafficability of this soil may be difficult, and significant damage to subgrade soils could occur, if earthwork is undertaken without proper precautions at times when the exposed soil are more than a few percentage points above optimum moisture content. For wet weather construction, site preparation activities may need to be accomplished using track-mounted equipment, loading removed material onto trucks supported on granular haul roads, or other methods to limit soil disturbance. The geotechnical engineer‟s representative should evaluate the subgrade during excavation by probing rather than proof rolling. Soils that have been disturbed during site preparation activities, or soft or loose areas identified during probing, should be over-excavated to firm, unyielding subgrade, and replaced with imported granular structural fill in conformance with Section 5.4.2.

5.3.2 Geotextile Separation Fabric

We recommend a geotextile separation fabric be placed to serve as a barrier between the prepared subgrade and granular fill/base rock in areas of repeated or heavy construction traffic. The geotextile fabric should meet the requirements presented in the current Oregon Department of Transportation (ODOT) Standard Specification for Construction, Section 02320.

5.3.3 Granular Working Surfaces (Haul Roads & Staging Areas)

Haul roads subjected to repeated heavy, tire-mounted, construction traffic (e.g. dump trucks, concrete trucks, etc.) will require a minimum of 18 inches of imported granular material. For light staging areas, 12 inches of imported granular material is typically sufficient. Additional granular material or geo-grid reinforcement may be recommended based on site conditions and/or loading at the time of construction. The imported granular material should be in conformance with Section 5.4.2 and have less than 5 percent material passing the U.S. Standard No. 200 Sieve. The prepared subgrade should be covered with geotextile fabric (Section 5.3.2) prior to placement of the imported granular material. The imported granular material should be placed in a single lift (up to 24 inches deep) and compacted using a smooth-drum, non-vibratory roller until well-keyed.




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5.3.4 Footing Subgrade Protection

A minimum of 3 inches of imported granular material is recommended to protect fine-grained, footing subgrades from foot traffic during inclement weather. The imported granular material should be in conformance with Section 5.4.2. The maximum particle size should be limited to 1 inch. The imported granular material should be placed in one lift over the prepared, undisturbed subgrade, and compacted using non-vibratory equipment until well keyed.

5.4 Structural Fill

The geotechnical engineer should be provided the opportunity to review all materials considered for use as structural fill (prior to placement). Samples of the proposed fill materials should be submitted to the geotechnical engineer a minimum of 5 business days prior their use on site8. The geotechnical engineer‟s representative should be contacted to evaluate compaction of structural fill as the material is being placed. Evaluation of compaction may take the form of in-place density tests and/or proof roll tests with suitable equipment. Structural fill should be evaluated at intervals not exceeding every 2 vertical feet as the fill is being placed.

5.4.1 On-Site Soils – General Use

5.4.1.1 Poorly Graded Gravel with Silt Fill (GP Fill), Silty Gravel Fill (GM Fill)

Re-use of these granular materials as structural fill is feasible, provided they are kept clean of organics, debris, and particles larger than 4 inches in diameter. If reused as structural fill, these materials should be prepared in general accordance with Section 5.4.2 of this report.

5.4.1.2 Silt (ML)

Re-use of this soil as structural fill may be difficult because this soil is sensitive to small changes in moisture content and are difficult, if not impossible, to adequately compact during wet weather. We anticipate the moisture content of this soil will be higher than the optimum moisture content for satisfactory compaction. Therefore, moisture conditioning (drying) should be expected in order to achieve adequate compaction. If used as structural fill, this soil should be free of organic matter, debris, and particles larger than 4 inches. Processing of larger cobbles within this soil may be required and should be factored. When used as structural fill, this soil should be placed in lifts with a maximum pre-compaction thickness of about 8 inches at moisture contents within –1 and +3 percent of optimum, and compacted to not less than 92 percent of the material‟s maximum dry density, as determined in general accordance with ASTM D1557 (Modified Proctor). If the on-site materials cannot be properly moisture-conditioned and/or processed, we recommend using imported granular material for structural fill.

5.4.2 Imported Granular Structural Fill – General Use

Imported granular structural fill should consist of angular pit or quarry run rock, crushed rock, or crushed gravel that is fairly well graded between coarse and fine particle sizes. The granular fill should contain no organic matter, debris, or particles larger than 4 inches, and have less than 5 percent material passing the U.S. Standard No. 200 Sieve. For fine-grading purposes, the maximum particle size should be limited to 1½ inches. The percentage of fines can be increased to 12 percent of the material passing the U.S. Standard No. 200 Sieve if placed during dry weather, and provided the fill material is moisture-conditioned, as

8 Laboratory testing for moisture density relationship (Proctor) is required. Tests for gradation may be required.




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necessary, for proper compaction. Imported granular fill material should be placed in lifts with a maximum thickness of about 12 inches, and compacted to not less than 95 percent of the material‟s maximum dry density, as determined in general accordance with ASTM D1557 (Modified Proctor). Proper moisture conditioning and the use of vibratory equipment will facilitate compaction of these materials. Granular fill materials with high percentages of particle sizes in excess of 1½ inches are considered non-moisture-density testable materials. As an alternative to conventional density testing, compaction of these materials should be evaluated by proof roll test observation (deflection tests), where accepted by the geotechnical engineer.

5.4.3 Trench Base Stabilization Material

If groundwater is present at the base of utility excavations, trench base stabilization material should be placed. Trench base stabilization material should consist of a minimum of 1 foot of well-graded granular material with a maximum particle size of 4 inches and less than 5 percent material passing the U.S. Standard No. 4 Sieve. The material should be free of organic matter and other deleterious material, placed in one lift (up to 24 inches thick), and compacted until well-keyed.

5.4.4 Trench Backfill Material

Trench backfill for the utility pipe base and pipe zone should consist of granular material as recommended by the utility pipe manufacturer. Trench backfill above the pipe zone should consist of well-graded granular material containing no organic matter or debris, have a maximum particle size of ¾ inch, and have less than 8 percent material passing the U.S. Standard No. 200 Sieve. As a guideline, trench backfill should be placed in maximum 12-inch-thick lifts. The earthwork contractor may elect to use alternative lift thicknesses based on their experience with specific equipment and fill material conditions during construction in order to achieve the required compaction. The following table presents recommended relative compaction percentages for utility trench backfill.

Table 1 Utility Trench Backfill Compaction Recommendations

Backfill Zone Recommended Minimum Relative Compaction

Structural Areas1 Landscaping Areas

Pipe Base and Within Pipe Zone 90% ASTM D1557 or pipe

manufacturer’s recommendation

88% ASTM D1557 or pipe

manufacturer’s recommendation

Above Pipe Zone 92% ASTM D1557 90% ASTM D1557

Within 3 Feet of Design Subgrade 95% ASTM D1557 90% ASTM D1557

1 Includes proposed building, pavement areas, structural fill areas, exterior hardscaping, etc.

5.4.5 Controlled Low-Strength Material (CLSM)

CLSM is a self-compacting, cementitious material that is typically considered when backfilling localized areas. CLSM is sometimes referred to as “controlled density fill” or CDF. Due to its flowable characteristics, CLSM typically can be placed in restricted-access excavations where placing and compacting fill is difficult. If chosen for use at this site, we recommend the CLSM be in conformance with Section 00442 of the most recent, State of Oregon, Standard Specifications for Highway Construction. The geotechnical engineer‟s representative should observe placement of the CLSM and obtain samples for compression testing in




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accordance with ASTM D4832. As a guideline, for each day‟s placement, two compressive strength specimens from the same CLSM sample should be tested. The results of the two individual compressive strength tests should be averaged to obtain the reported 28-day compressive strength. If CLSM is considered for use on this site, please contact the geotechnical engineer for site-specific and application-specific recommendations.

5.5 Shallow Foundations


Satisfactory subgrade support for shallow foundations can be obtained from the native, very stiff to better silt (ML), or new structural fill that is properly placed and compacted on these materials during construction. This material was first encountered at depths of about ¾- to 1-foot bgs within our explorations. The geotechnical engineer‟s representative should be contacted to observe subgrade conditions prior to placement of forms, reinforcement steel, or granular backfill (if required). If soft, loose, or otherwise unsuitable soils are encountered, they should be over-excavated as recommended by the geotechnical representative at the time of construction. The resulting over-excavation should be brought back to grade with imported granular structural fill in conformance with Section 5.4.2. The maximum particle size of over-excavation backfill should be limited to 1½ inches. All granular pads for footings should be constructed a minimum of 6 inches wider on each side of the footing for every vertical foot of over-excavation.

5.5.2 Minimum Footing Width & Embedment

Minimum footing widths should be in conformance with the current OSSC. As a guideline, CGT recommends individual spread footings have a minimum width of 24 inches. We recommend continuous wall footings have a minimum width of 18 inches. All footings should be founded at least 18 inches below the lowest, permanent adjacent grade to develop lateral capacity and for frost protection.

5.5.3 Bearing Pressure & Settlement

Footings founded as recommended above should be proportioned for a maximum allowable soil bearing pressure of 2,500 pounds per square foot (psf). This bearing pressure is a net bearing pressure, applies to the total of dead and long-term live loads, and may be increased by one-third when considering seismic or wind loads. For foundations founded as recommended above, total settlement of foundations is anticipated to be less than 1 inch. Differential settlements between adjacent columns and/or bearing walls should not exceed ½ inch. If an increased allowable soil bearing pressure is desired, the geotechnical engineer should be consulted.

5.5.4 Lateral Capacity

A maximum passive (equivalent fluid) earth pressure of 150 pounds per cubic foot (pcf) is recommended for design of footings cast neat into excavations in suitable native soil or confined by imported granular structural fill that is properly placed and compacted during construction. The recommended earth pressure was computed using a factor of safety of 1½, which is appropriate due to the amount of movement required to develop full passive resistance. In order to develop the above capacity, the following should be understood: 1. Concrete must be poured neat in excavations or the foundations must be backfilled with imported

granular structural fill, 2. The adjacent grade must be level,




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3. The static ground water level must remain below the base of the footings throughout the year. 4. Adjacent floor slabs, pavements, or the upper 12-inch-depth of adjacent, unpaved areas should not be

considered when calculating passive resistance. An ultimate coefficient of friction equal to 0.35 may be used when calculating resistance to sliding for footings founded on the native soils described above. An ultimate coefficient of friction equal to 0.45 may be used when calculating resistance to sliding for footings founded on a minimum of 6 inches of imported granular structural fill (crushed rock) that is properly placed and compacted during construction.

5.5.5 Subsurface Drainage

Recognizing the fine-grained soils encountered at this site, we recommend placing foundation drains at the exterior, base elevations of perimeter continuous wall footings. Foundation drains should consist of a minimum 4-inch diameter, perforated, PVC drainpipe wrapped with a non-woven geotextile filter fabric. The drains should be backfilled with a minimum of 2 cubic feet of open graded drain rock per lineal foot of pipe. The drain rock should also be encased in a geotextile fabric in order to provide separation from the surrounding fine-grained soils. Foundation drains should be positively sloped and should outlet to a suitable discharge point. The geotechnical engineer‟s representative should observe the drains prior to backfilling. Roof drains should not be tied into foundation drains.

5.6 Floor Slabs


Satisfactory subgrade support for slabs constructed on grade, supporting up to 150 psf area loading, can be obtained from the native, very stiff to better silt (ML), or new structural fill that is properly placed and compacted on this material during construction. The geotechnical engineer‟s representative should observe floor slab subgrade soils to evaluate surface consistencies. If soft, loose, or otherwise unsuitable soils are encountered, they should be over-excavated as recommended by the CGT geotechnical representative at the time of construction. The resulting over-excavation should be brought back to grade with imported granular structural fill as described in Section 5.4.2.

5.6.2 Crushed Rock Base

Concrete floor slabs should be supported on a minimum 6-inch-thick layer of crushed rock (base rock). Floor slab base rock should consist of well-graded granular material (crushed rock) containing no organic matter or debris, have a maximum particle size of ¾ inch, and have less than 5 percent material passing the U.S. Standard No. 200 Sieve. Floor slab base rock should be placed in one lift and compacted to not less than 95 percent of the material‟s maximum dry density as determined in general accordance with ASTM D1557 (Modified Proctor). We recommend “choking” the surface of the base rock with sand just prior to concrete placement. Choking means the voids between the largest aggregate particles are filled with sand, but does not provide a layer of sand above the base rock. Choking the base rock surface reduces the lateral restraint on the bottom of the concrete during curing. Choking the base rock also reduces punctures in vapor retarding membranes due to foot traffic where such membranes are used.

5.6.3 Design Considerations

For floor slabs constructed with a 6-inch thick base rock layer as recommended, an effective modulus of subgrade reaction of 75 pounds per cubic inch (pci) is recommended for the design of the floor slab. A higher




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effective modulus of subgrade reaction can be obtained by increasing the base rock thickness. Please contact the geotechnical engineer for additional recommendations if a higher modulus is desired. Floor slabs constructed as recommended will likely settle less than ½ inch. For general floor slab construction, slabs should be jointed around columns and walls to permit slabs and foundations to settle differentially.

5.6.4 Subgrade Moisture Considerations

Liquid moisture and moisture vapor should be expected at the subgrade surface. The recommended crushed rock base is anticipated to provide protection against liquid moisture. Where moisture vapor emission through the slab must be minimized, e.g. impervious floor coverings, storage of moisture sensitive materials directly on the slab surface, etc., a vapor retarding membrane or vapor barrier below the slab should be considered. Factors such as cost, special considerations for construction, floor coverings, and end use suggest that the decision regarding a vapor retarding membrane or vapor barrier be made by the architect and owner. If a vapor retarder or vapor barrier is placed below the slab, its location should be based on current American Concrete Institute (ACI) guidelines, ACI 302 Guide for Concrete Floor and Slab Construction. In some cases, this indicates placement of concrete directly on the vapor retarder or barrier. Please note that the placement of concrete directly on impervious membranes increases the risk of plastic shrinkage cracking and slab curling in the concrete. Construction practices to reduce or eliminate such risk, as described in ACI 302, should be employed during concrete placement.

5.7 Pavements

Pavement subgrade preparation should be performed in general accordance with the recommendations presented in Section 5.1.5 above. For relatively impermeable pavements, the subgrade surfaces should be crowned (or sloped) for proper drainage in accordance with specifications provided by the project civil engineer. For permeable pavements, the subgrade should be graded in accordance with the specification provided by the pavement designer.

5.7.1 Traffic Classifications

Recognizing that traffic data has not been provided, CGT has considered two levels of traffic demand for review and design of pavement sections. We modeled the following design cases (traffic levels) developed from the Asphalt Pavement Association of Oregon (APAO):

APAO Level II (Light): This design case considers typical ADTT of 2 to 7 per day over 20 years. Examples under this loading consist of residential streets and parking lots of less than 500 stalls. We anticipate this traffic loading will be appropriate for the proposed passenger vehicle parking stalls.

APAO Level III (Low Moderate): This design case considers typical ADTT of 7 to 14 per day over 20 years. Examples under this loading consist of rural minor collector streets and parking lots of more than 500 stalls. We anticipate this traffic loading will be appropriate for the drive lane, exterior aprons and fire truck parking areas.

We recommend the owner and design team review the traffic levels presented above and select those that most accurately represent anticipated daily truck traffic for select new pavements.




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5.7.2 Input Parameters

Designs of the hot mixed asphalt concrete (HMAC) flexible pavement sections and the rigid Portland cement concrete (PCC) rigid slab section presented below were based on the parameters presented in the following table and design approaches from: The American Association of State Highway and Transportation Officials (AASHTO) 1993 “Design of

Pavement Structures” manual, The Asphalt Pavement Association of Oregon (APAO) 2003 “Asphalt Pavement Design Guide”, and The Oregon Department of Transportation (ODOT) 2011 “Pavement Design Guide”. If any of the items listed in Table 2 or Table 3 need to be revised, please contact us and we will reassess the pavement design sections presented below.

5.7.2.1 HMAC Analysis Inputs

Table 2 Input Parameters Used in HMAC Pavement Design

Input Parameter Design Value1 Input Parameter Design Value1

Pavement Design Life 20 years Resilient

Modulus

Subgrade (Native Soils)4 4,000 psi

Annual Percent Growth 0 percent Granular Sub-Base 15,000 psi

Initial Serviceability 4.2 Crushed Aggregate Base2 20,000 psi

Terminal Serviceability2 2.5 Structural

Coefficient2

Crushed Aggregate Base 0.10 Reliability2 75 percent

Standard Deviation2 0.49 Asphalt 0.42

Drainage Factor3 1.0

Vehicle Traffic4

(range in ESAL5)

APAO Level II (Light) Less than 50,000 --- ---

--- --- APAO Level III (Light) Less than 100,000

--- --- 1 If any of the above parameters are incorrect, please contact us so that we may revise our recommendations, if warranted. 2 Value based on guidelines presented in the ODOT Pavement Design Guide. 3 Assumes good drainage away from pavement, base, and subgrade is achieved by proper crowning of subgrades. 4 Values based on experience with similar soils in the region. 5 ESAL = Total 18-Kip equivalent single axle load. Traffic levels taken from Table 3.1 of APAO manual. If actual traffic levels will be

above those identified above, the geotechnical engineer should be consulted.




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5.7.2.2 PCC Pavements Analysis Inputs

Table 3 Input Parameters Used in PCC Pavement Design

Parameter / Discussion Design Value

Subgrade Modulus (k-value) 75 psi

Standard Deviation1 0.39

Load Transfer Devices incorporated? Yes; Load Transfer Coefficient = 3.2

Minimum Concrete Modulus of Rupture 600 psi

Concrete Elastic Modulus 5.0 x 106 psi

Minimum Air-Entrained Concrete Compressive Strength 4,000 psi

Vehicle Traffic2

(range in ESAL)

APAO Level II (Light) Less than 50,000

APAO Level III (Light) Less than 100,000

1 Value based on guidelines presented in the ODOT Pavement Design Guide.

2 ESAL = Total 18-Kip equivalent single axle load. If actual traffic levels will be above those identified above, the

geotechnical engineer should be consulted.

5.7.3 Recommended Minimum Pavement Sections

5.7.3.1 Flexible Pavements

The following table presents the minimum flexible pavement sections for the traffic levels indicated in the preceding table, based on the referenced design procedures.

Table 4 Recommended Minimum Flexible Pavement Sections

Material APAO Traffic Loading

Level II Level III

Asphalt Pavement (inches) 3½ 4

Crushed Aggregate Base (inches)1 10 10½

Subgrade Soils Prepared in conformance with Section 5.1.5 of this report.

1 Thickness shown assumes dry weather construction. A granular sub-base section and/or a geotextile separation fabric may be

required in wet conditions in order to support construction traffic and protect the subgrade. Refer to Section 5.3 for additional

discussion.




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5.7.3.2 Rigid Pavements

The following table presents the minimum rigid pavement sections for the traffic levels indicated in the preceding table, based on the referenced design procedures.

Table 5 Recommended Minimum Rigid Pavement Sections

Material APAO Traffic Loading

Level II Level III

Portland Cement Concrete, PCC1 (inches) 5 6

Leveling Coarse, Sand or All-Weather Base2,3 (inches) 2 2

Subgrade Soils Prepared in conformance with Section 5.1.5 of this report

1 Concrete strength and other properties should be in conformance with Table 3 above. 2 Leveling course thickness should be a minimum of four times the maximum particle size. Example. If crushed rock up to ¾ inch in

diameter is used, the leveling course should be at least 3 inches thick. 3 Assumes dry weather construction. Increased base rock sections and/or a geotextile separation fabric may be required in wet

conditions in order to support construction traffic and protect the subgrade. Refer to Section 5.3 for additional discussion

5.7.4 Pavement Materials

We recommend pavement aggregate base consist of dense-graded aggregate in conformance with Section 02630.10 of the most recent State of Oregon, Standard Specifications for Highway Construction (ODOT SSC), with the following additional considerations. We recommend the material consist of crushed rock or gravel, have a maximum particle size of 1½ inches, and have less than 10 percent material passing the U.S. Standard No. 200 Sieve. Aggregate base should be compacted to not less than 95 percent of the material‟s maximum dry density as determined in general accordance with ASTM D1557 (Modified Proctor). We recommend asphalt pavement consist of Level 2, ½-inch, dense-graded HMAC in conformance with the most recent ODOT SSC. Asphalt pavement should be compacted to at least 91 percent of the material‟s theoretical maximum density as determined in general accordance with ASTM D2041 (Rice Specific Gravity).

5.8 Additional Considerations

5.8.1 Drainage

Subsurface drains should be connected to the nearest storm drain, on-site infiltration system (to be designed by others) or other suitable discharge point. Paved surfaces and grading near or adjacent to the building should be sloped to drain away from the building. Surface water from paved surfaces and open spaces should be collected and routed to a suitable discharge point. Surface water should not be directed into foundation drains.

5.8.2 Expansive Potential

The near surface native soils consist of low to moderate plasticity silt. Based on our experience with similar soils in the vicinity of the site, these soils are not considered to be susceptible to appreciable movements from changes in moisture content. Accordingly, no special considerations are required to mitigate expansive potential of the near surface soils at the site.




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6.0 RECOMMENDED ADDITIONAL SERVICES

6.1 Design Review

Geotechnical design review is of paramount importance. We recommend the geotechnical design review take place prior to releasing bid packets to contractors.

6.2 Observation of Construction

Satisfactory earthwork, foundation, floor slab, and pavement performance depends to a large degree on the quality of construction. Sufficient observation of the contractor‟s activities is a key part of determining that the work is completed in accordance with the construction drawings and specifications. Subsurface conditions observed during construction should be compared with those encountered during subsurface explorations, and recognition of changed conditions often requires experience. We recommend that qualified personnel visit the site with sufficient frequency to detect whether subsurface conditions change significantly from those observed to date and anticipated in this report. We recommend geotechnical engineer‟s representative attend a pre-construction meeting coordinated by the contractor and/or developer. The project geotechnical engineer‟s representative should provide observations and/or testing of at least the following earthwork elements during construction: Site Stripping and Demolition Subgrade Preparation for Shallow Foundations, Structural Fills, Floor Slabs, and Pavements Compaction of Structural Fill and Utility Trench Backfill Compaction of Base Rock for Floor Slabs & Pavements Compaction of HMAC for Pavements It is imperative that the owner and/or contractor request earthwork observations and testing at a frequency sufficient to allow the geotechnical engineer to provide a final letter of compliance for the earthwork activities.

7.0 LIMITATIONS

We have prepared this report for use by the owner/developer and other members of the design and construction team for the proposed development. The opinions and recommendations contained within this report are forwarded to assist in the planning and design process and are not intended to be, nor should they be construed as, a warranty of subsurface conditions. We have made observations based on our explorations that indicate the soil conditions at only those specific locations and only to the depths penetrated. These observations do not necessarily reflect soil types, strata thickness, or water level variations that may exist between or away from our explorations. If subsurface conditions vary from those encountered in our site explorations, CGT should be alerted to the change in conditions so that we may provide additional geotechnical recommendations, if necessary. Observation by experienced geotechnical personnel should be considered an integral part of the construction process. The owner/developer is responsible for ensuring that the project designers and contractors implement our recommendations. When the design has been finalized, prior to releasing bid packets to contractors, we recommend that the design drawings and specifications be reviewed by our firm to see that our recommendations have been interpreted and implemented as intended. If design changes are made, we request that we be retained to review our conclusions and recommendations and to provide a written




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modification or verification. Design review and construction phase testing and observation services are beyond the scope of our current assignment, but will be provided for an additional fee. The scope of our services does not include services related to construction safety precautions, and our recommendations are not intended to direct the contractor‟s methods, techniques, sequences, or procedures, except as specifically described in our report for consideration in design. Geotechnical engineering and the geologic sciences are characterized by a degree of uncertainty. Professional judgments presented in this report are based on our understanding of the proposed construction, familiarity with similar projects in the area, and on general experience. Within the limitations of scope, schedule, and budget, our services have been executed in accordance with the generally accepted practices in this area at the time this report was prepared; no warranty, expressed or implied, is made. This report is subject to review and should not be relied upon after a period of three years.

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Site Plan

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LEGEND

PUBLIC WORKS SHOP BUILDING - FOREST GROVE, OREGONProject Number G1905091

FIGURE 2

0 60 120

1 Inch = 60 Feet

Drafted by: ALS

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NOTES: 2013 aerial photograph, 2014 topographic contours, and property linesfrom MetroMap Regional Land Information System (RLIS) data, accessed June2019, from Metro website: http://gis.oregonmetro.gov/metromap/. All locationsare approximate.

118822

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Test pit locations Approximate proposed building footprint

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Carlson Geotechnical P.O. Box 230997, Tigard, Oregon 97281

Carlson Geotechnical A Division of Carlson Testing, Inc. Phone: (503) 601-8250 Fax: (503) 601-8254

Bend Office Eugene Office Salem Office Tigard Office

(541) 330-9155 (541) 345-0289 (503) 589-1252 (503) 684-3460

Appendix A: Subsurface Investigation and

Laboratory Testing


2551 23rd Avenue



July 11, 2019

Prepared For:

Mr. Gregory Robertson City of Forest Grove

P.O. Box 326 Forest Grove, Oregon 97116-0326

Prepared by

Carlson Geotechnical

Exploration Key ..................................................................................................................................... Figure A1 Soil Classification .................................................................................................................................. Figure A2 Exploration Logs ......................................................................................................................... Figures A3 – A6

Appendix A: Subsurface Investigation & Laboratory Testing




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Carlson Geotechnical Page A2 of A2

A.1.0 SUBSURFACE INVESTIGATION

Our field investigation consisted of four test pits completed in late June 2019. The exploration locations are shown on the Site Plan, attached to the geotechnical report as Figure 2. The exploration locations shown therein were determined based on measurements from existing site features (buildings, etc.) and are approximate. The attached figures detail the exploration methods (Figure A1), soil classification criteria (Figure A2), and present detailed logs of the explorations (Figures A3 through A6), as discussed below. Surface elevations indicated on the logs were estimated based on the topographic contours shown on the referenced Site Plan and are approximate.

A.1.1 Test Pits

CGT observed the excavation of four test pits (TP-1 through TP-4) at the site on June 28, 2019, to depths of about 9 to 10½ feet bgs. The test pits were excavated using a Deere 310SE excavator and operator provided by the client. The test pits were loosely backfilled with the excavated materials upon completion.

A.1.2 In-Situ Testing – Pocket Penetrometer Tests

Pocket penetrometer readings were generally taken at approximate ½-foot intervals in the upper four feet of each test pit. The pocket penetrometer is a hand-held instrument that provides an approximation of the unconfined compressive strength of cohesive, fine-grained soils. The correlation between pocket penetrometer readings and the consistency of cohesive, fine-grained soils is provided on the attached Figure A2.

A.1.3 Material Classification & Sampling

Representative grab samples of the soils encountered were obtained at select intervals within the test pits. A qualified member of CGT’s geological staff collected the samples and logged the soils in general accordance with the Visual-Manual Procedure (ASTM D2488). An explanation of this classification system is attached as Figure A2. The grab samples were stored in sealable plastic bags and transported to our soils laboratory for further examination and testing. Our geotechnical staff visually examined all samples in order to refine the initial field classifications.

A.1.4 Subsurface Conditions

Subsurface conditions are summarized in Section 2.3 of the geotechnical report. Detailed logs of the explorations are presented on the attached exploration logs, Figures A3 through A6.

A.2.0 LABORATORY TESTING

Laboratory testing was performed on samples collected in the field to refine our initial field classifications and determine in-situ parameters. Laboratory testing included the following: Six moisture content determinations (ASTM D2216). Two Atterberg limits (plasticity) tests (ASTM D4318). Two percentage passing the U.S. Standard No. 200 Sieve tests (ASTM D1140). Results of the laboratory tests are shown on the exploration logs.

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GRAB1

GRAB2

GRAB3

GRAB4

GRAB5

4.5

4.5

4.25

4.25

3.5

3.5

4.25

4.25

POORLY GRADED GRAVEL WITH SILT FILL:Gray-brown, moist, angular, up to ¾ inch indiameter, with low plasticity fines.SILTY GRAVEL FILL: Brown, moist, rounded tosubrounded, up to 1½ inches in diameter, lowplasticity fines.SILT: Very stiff to hard, brown, moist, low tomedium plasticity, trace rootlets.

Tan-brown, some orange staining below 4 feetbgs.

Some orange staining, medium plasticity below 6feet bgs.

Trace fine-grained sand below 9½ feet bgs.

Some subangular to angular gravel up to ¾ inch indiameter below 10 feet bgs.

• Test pit terminated at 10½ feet bgs.• No groundwater or caving encountered.• Test pit loosely backfilled with excavatedmaterial.

GPFILL

GMFILL

ML

LOGGED BY MMS

GROUND ELEVATION 183 ft ELEVATION DATUM Topographic Contours - Site PlanDATE STARTED 6/28/19

SEEPAGE ---

GROUNDWATER AT END ---

GROUNDWATER AFTER EXCAVATION ---

REVIEWED BY RTH

EXCAVATION METHOD 24-inch smooth bucket

EQUIPMENT Deere 310SE

EXCAVATION CONTRACTOR Client

WEATHER ~55 degrees, overcast SURFACE Gravel

FIGURE A3

RE

CO

VE

RY

%(R

QD

)

SA

MP

LE T

YP

EN

UM

BE

R

PO

CK

ET

PE

N.

(tsf

)

DR

Y U

NIT

WT

.(p

cf)

DE

PT

H(f

t)

0

2

4

6

8

10

MC20 40 60 80

PL LL

PAGE 1 OF 1

Test Pit TP-1

WDCP N60 VALUE 20 40 60 80

MATERIAL DESCRIPTION

WD

CP

N60

VA

LUE

GR

OU

ND

WA

TE

R

ELE

VA

TIO

N(f

t)

182

180

178

176

174

172

FINES CONTENT (%) 20 40 60 800 100G

RO

UP

SY

MB

OL

GR

AP

HIC

LOG

PROJECT NAME Public Works Shop Building

PROJECT LOCATION 2551 23rd Avenue - Forest Grove, Oregon

CLIENT City of Forest Grove

PROJECT NUMBER G1905091

Carlson GeotechnicalA Division of Carlson Testing, Inc.www.carlsontesting.com

CG

T E

XP

LOR

AT

ION

WIT

H W

DC

P G

1905

091

LO

GS

.GP

J 7

/9/1

9 D

RA

FT

ED

BY

: MLL

40

40

41

28 40

100

100

GRAB1

GRAB2

4.5

4.5

4.0

4.25

4.25

1.75

3.0

3.0

POORLY GRADED GRAVEL WITH SILT FILL:Gray-brown, moist, angular, up to ¾ inch indiameter, with low plasticity fines.SILTY GRAVEL FILL: Brown, moist, subrounded,up to 2 inches in diameter, low plasticity fines.SILT: Very stiff to hard, brown, moist, low tomedium plasticity.

Tan-brown, some orange staining, somefine-grained sand, trace angular gravel up to ½inch in diameter below 4 feet bgs.

Trace fine-grained sand below 8 feet bgs.

• Test pit terminated at 10 feet bgs.• No groundwater or caving encountered.• Test pit loosely backfilled with excavatedmaterial.

GPFILL

GMFILL

ML

LOGGED BY MMS


SEEPAGE ---



REVIEWED BY RTH





FIGURE A4

RE

CO

VE

RY

%(R

QD

)

SA

MP

LE T

YP

EN

UM

BE

R

PO

CK

ET

PE

N.

(tsf

)

DR

Y U

NIT

WT

.(p

cf)

DE

PT

H(f

t)

0

2

4

6

8

10

MC20 40 60 80

PL LL

PAGE 1 OF 1

Test Pit TP-2

WDCP N60 VALUE 20 40 60 80


WD

CP

N60

VA

LUE

GR

OU

ND

WA

TE

R

ELE

VA

TIO

N(f

t)

182

180

178

176

174

FINES CONTENT (%) 20 40 60 800 100G

RO

UP

SY

MB

OL

GR

AP

HIC

LOG






CG

T E

XP

LOR

AT

ION

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H W

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P G

1905

091

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.GP

J 7

/9/1

9 D

RA

FT

ED

BY

: MLL

26

38

26 42

95

100

100

100

GRAB1

GRAB2

GRAB3

4.5

4.5

4.5

3.25

4.5

4.5

4.5

4.5

POORLY GRADED GRAVEL WITH SILT FILL:Gray-brown, moist, angular, up to ¾ inch indiameter, with low plasticity fines.

SILT: Very stiff to hard, brown, moist, low tomedium plasticity.

Tan-brown with some orange staining, somefine-grained sand below 2 feet bgs.

Trace fine-grained sand below 8 feet bgs.

• Test pit terminated at 9¾ feet bgs.• No groundwater or caving encountered.• Test pit loosely backfilled with excavatedmaterial.

GPFILL

ML

LOGGED BY MMS


SEEPAGE ---



REVIEWED BY RTH





FIGURE A5

RE

CO

VE

RY

%(R

QD

)

SA

MP

LE T

YP

EN

UM

BE

R

PO

CK

ET

PE

N.

(tsf

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DR

Y U

NIT

WT

.(p

cf)

DE

PT

H(f

t)

0

2

4

6

8

MC20 40 60 80

PL LL

PAGE 1 OF 1

Test Pit TP-3

WDCP N60 VALUE 20 40 60 80


WD

CP

N60

VA

LUE

GR

OU

ND

WA

TE

R

ELE

VA

TIO

N(f

t)

184

182

180

178

176

174

FINES CONTENT (%) 20 40 60 800 100G

RO

UP

SY

MB

OL

GR

AP

HIC

LOG






CG

T E

XP

LOR

AT

ION

WIT

H W

DC

P G

1905

091

LO

GS

.GP

J 7

/9/1

9 D

RA

FT

ED

BY

: MLL

38

97

100

100

100

GRAB1

GRAB2

GRAB3

4.5

4.5

4.5

4.25

4.25

4.5

4.5

4.5

POORLY GRADED GRAVEL WITH SILT FILL:Gray-brown, moist, angular, up to ¾ inch indiameter, with low plasticity fines, some rootlets,trace roots up to ¼ inch in diameter.

SILT: Hard, tan-brown, moist, low to mediumplasticity, some fine-grained sand.

Tan-brown with orange staining below 6 feet bgs.

• Test pit terminated at 9½ feet bgs.• No groundwater or caving encountered.• Test pit loosely backfilled with excavatedmaterial.

GPFILL

ML

LOGGED BY MMS


SEEPAGE ---



REVIEWED BY RTH





FIGURE A6

RE

CO

VE

RY

%(R

QD

)

SA

MP

LE T

YP

EN

UM

BE

R

PO

CK

ET

PE

N.

(tsf

)

DR

Y U

NIT

WT

.(p

cf)

DE

PT

H(f

t)

0

2

4

6

8

MC20 40 60 80

PL LL

PAGE 1 OF 1

Test Pit TP-4

WDCP N60 VALUE 20 40 60 80


WD

CP

N60

VA

LUE

GR

OU

ND

WA

TE

R

ELE

VA

TIO

N(f

t)

182

180

178

176

174

FINES CONTENT (%) 20 40 60 800 100G

RO

UP

SY

MB

OL

GR

AP

HIC

LOG






CG

T E

XP

LOR

AT

ION

WIT

H W

DC

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1905

091

LO

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.GP

J 7

/9/1

9 D

RA

FT

ED

BY

: MLL

BUILDING FOOTPRINT LAYOUT AND ELEVATION

City of Forest Grove | Public Works Facility PEMB Option.07.12.2019 © 2019 Mackenzie | 2150495.01

Perspective View

Floor Plan

NTS

1/8” = 1’ 0”2

1

CITY OF FOREST GROVE CONTRACT DOCUMENTS for...hard copy of the bid documents will be available ....

Documents

Transcript of CITY OF FOREST GROVE CONTRACT DOCUMENTS for...hard copy of the bid documents will be available ....