12-C6A + C6B Chlorination System 100% Specifications.pdf

100% TECHNICAL SPECIFICATIONS

Cascade Wells 6A and 6B Chlorination System

City of Gresham, Oregon

November 4, 2026

Prepared By:

GSI Water Solutions, Inc.

650 NE Holladay Street, Suite 900 Portland, Oregon 97232

503.239.8799

00 01 10: Table of Contents City of Gresham – Cascade Wells 6A and 6B Section 00 01 10 - i

SECTION 00 01 10

TABLE OF CONTENTS

PROCUREMENT AND CONTRACTING REQUIREMENTS

DIVISION 00 -- PROCUREMENT AND CONTRACTING REQUIREMENTS

Section 00 01 10 Table of Contents .............................................................................................. i Section 00 01 15 List of Drawings and attachments .................................................................... ii Section 00 25 00 Procurement Meetings Section 00 45 13 Bidder’s Qualifications Section 00 70 00 Conditions of the Contract Section 00 71 00 Contracting Definitions

SPECIFICATIONS

DIVISION 01 -- GENERAL REQUIREMENTS

Section 01 11 00 Summary of Work Section 01 14 00 Work Restrictions Section 01 22 00 Measurement and Payment Section 01 33 00 Submittal Procedures Section 01 51 00 Temporary Utilities Section 01 57 00 Temporary Controls Section 01 71 13 Mobilization and Demobilization

DIVISION 02 -- EXISTING CONDITIONS

Section 02 00 00 Existing Conditions

DIVISION 13 – FABRICATED STRUCTURES

Section 13 34 23 Fabricated Structures

DIVISION 33 -- UTILITIES

Section 33 01 10.57 Disinfection of Water Supply Wells and System Commissioning Section 33 01 12.15 Video Surveying of Water Supply Wells

END OF SECTION

00 01 15: List of Drawings and Attachments City of Gresham – Cascade Wells 6A and 6B Section 00 01 15 - ii

SECTION 00 01 15

LIST OF DRAWINGS AND ATTACHMENTS

PART 1 - GENERAL

1.1 LIST OF DRAWINGS

A. Included herein as part of the contract documents are the following drawings:

1. Exhibit A: Cascade Wells 6A and 6B Site Map

2. Exhibit B: Cascade 6A Chlorination System Design

3. Exhibit C: Cascade 6B Chlorination System Design

4. Exhibit D: MULT 142639 (Cascade 6A) and MULT 122597 (Cascade 6B) Driller Logs

5. Exhibit E: Fox Box Enclosure Design

1.2 LIST OF ATTACHMENTS

A. Included herein as part of the contract documents are the following attachments:

1. Attachment A: Bidder’s Qualification Form

00 25 00: Procurement Meetings City of Gresham – Cascade Wells 6A and 6B

Section 00 25 00 - 1

SECTION 00 25 00

PROCUREMENT MEETINGS

PART 1 - GENERAL

1.1 PRE-BID CONFERENCE AND SITE VISIT

A. A mandatory pre-bid conference and site visit will be held on November 3, 2026, beginning at

[3:00] p.m. to outline the bid requirements, field questions from prospective bidders, and allow prospective bidders to observe the existing site conditions and determine site preparation necessary to prepare a qualified bid. Plan holders will be notified via email of any changes to the schedule.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

3.1 NOT USED

00 45 13: Bidder’s Qualifications

Section 00 45 13 - 2

SECTION 00 45 13

BIDDER’S QUALIFICATIONS

PART 1 - GENERAL

1.1 QUALIFICATION INFORMATION

A. The Bidder shall provide the information described in this section or their bid may be considered non-responsive. The Bidder may submit additional information beyond that requested below to demonstrate the Bidder’s qualifications.

B. The Statement of the Bidder’s Qualifications (Attachment A) must be submitted to the Owner at the same time bids are due.

C. The Bidder must demonstrate they are licensed and bonded in the State of Oregon and must comply with all State of Oregon well construction standards including Oregon Administrative Code (OAC) Chapter 173-160 and comply with methods and standards in American Water Works Association (AWWA) publication A100-20.

D. Contractors must submit qualifying experience to be eligible to submit a bid. Please see Attachment A for additional qualifying terms and submission deadlines.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

3.1 SEE ATTACHMENT A FOR BIDDER’S QUALIFICATION FORM.

00 70 00: Conditions of the Contract

Section 00 70 00 - 3

SECTION 00 70 00

CONDITIONS OF THE CONTRACT

PART 1 - GENERAL

1.1 WORK COVERED / NOT COVERED BY THE CONTRACT

A. The general work to be completed under this contract consists of a well video inspection, disinfection, mechanical rehabilitation (if necessary), zonal impulse generation with simultaneous pumping (if necessary), and construction of a chlorination system for each of two municipal wells completed in the Sand and Gravel Aquifer (SGA). In addition to the work on the wells, a wellhead cover shall be installed over each wellhead and a foundation for the wellhead cover shall be constructed.

B. A Chlorination System similar to those described by these specifications was installed in Cascade 8 and subsequently removed from the well. The Contractor will inspect materials from the Cascade 8 Chlorination System and use usable materials to build the Cascade 6B chlorination system.

C. Prior to installation in Cascade 6B, the contractor is responsible for inspecting and testing the pump from Cascade 8 to ensure it is in good working order. If necessary, the Contractor shall provide the Owner with costs for pump repair and/or pump replacement

D. The Owner reserves the right to limit (reduce) any aspect of the work for any reason without change to the unit prices in the bid form.

E. The work to be completed under this contract does not include the installation of a permanent pump system, controls, electrical, wellhouse and connection to the water system.

F. The contract will be awarded based on total cost for all sections including Additive work items.

1.2 CONTRACT TIME AND PROJECT SCHEDULE

A. Contract time is defined as the period established by the terms and conditions of the contract within which the work must be physically completed.

B. The work to be completed under this contract and described by these specifications shall adhere to the following tentative project schedule:

Notice of Advertisement November 4, 2026

Pre-Bid Conference November 10, 2026 3:00 pm PST

Questions Received November 13, 2026

Questions Answered November 18, 2026

Bids Due November 24, 2026 2:00 pm PST

First-Tier Subcontractor Disclosure November 24, 2026 4:00 pm PST

Notice of Intent to Award November 27, 2026

Contracting December 4 to December 21, 2026

Notice to Proceed December 21, 2026

Substantial Completion (90 days from NTP) March 21, 2027

Final Completion (14 days from Substantial Completion) April 4, 2027

Section 00 70 00 - 4

1.3 AMERICAN IRON AND STEEL (AIS) REQUIREMENT

A. Goods and services for this project are being funded with monies made available by the Water

Infrastructure Finance and Innovation Act program of the EPA that has statutory requirements commonly known as “American Iron and Steel” (AIS) that requires all of the permanent iron and steel products used in the project to be produced in the United States. The chlorination systems installed in Cascade 6A and 6B are considered to be permanent from the perspective of AIS requirements.

B. Any materials subject to AIS requirements that are installed as part of this project and are to be permanent property of the Owner must be certified American Iron and Steel according to EPA guidelines.

1.4 NOTICE TO PROCEED

A. The Owner intends to provide a written Notice to Proceed within 7 calendar days after the contract has been executed and the performance bond and all required insurances have been filed with and approved by the Owner.

B. The Owner retains the right to delay the Notice to Proceed. The Owner shall provide the Contractor with notification that the Notice to Proceed will be delayed and an estimate of when the Notice to Proceed will be issued as soon as a delay is anticipated. The Contractor shall not commence work under the contract until such written notice has been given.

1.5 SUBSTANTIAL COMPLETION:

A. Substantial completion of the chlorination systems is defined as the completion of all rehabilitation (if needed), construction, testing, and disinfection, including submittal of all test data.

B. Substantial completion of the chlorination systems shall be 90 calendar days from Notice to Proceed.

1.6 FINAL COMPLETION:

A. Final completion of the chlorination systems is defined as finishing wellhead completion, site cleanup, issuance of final submittals, punch list items, and demobilization.

B. Final completion of the chlorination systems shall be 14 calendar days from Substantial

Completion.

1.7 LIQUIDATED DAMAGES

A. Delay in the execution or completion of the work will be inconvenient and expensive to the

Contracting Agency and may affect future construction activities at the site and performance of the well. The costs to the Owner for the administration of the Contract, including engineering, inspection, and supervision, will be increased by such delays. It will be impractical and extremely difficult to ascertain and determine the actual damages which will be suffered by the Owner as a result of such delays.

B. Unless otherwise defined in the Owner’s General or Special Provisions, failure to complete the work by the Contract completion date, including extensions thereto, shall entitle the Owner to charge the Contractor liquidated damages in the amount as stated herein. The amount due to the Owner as liquidated damages shall be deducted from monies due to the Contractor or shall be collected from the Contractor and/or the Surety as an outstanding debt to the Owner.

C. Liquidated damages in the amount of $800 per working day will be assessed for failure to physically complete the project within the final completion time specified. Liquidated damages in an amount based upon the original contract amount and original time, will be assessed for failure to physically complete the entire project within the final completion time specified.

Section 00 70 00 - 5

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

00 71 00: Contracting Definitions

Section 00 71 00 - 6

SECTION 00 71 00

CONTRACTING DEFINITIONS

PART 1 - GENERAL

1.1 DEFINED TERMS

A. Terms in these Technical Specifications have the meanings indicated below:

1. Owner – City of Gresham, 1333 NW Eastman Parkway, Gresham, OR, 97030

2. Owner’s Representative – (Primary) GSI Water Solutions, Inc., 650 NE Holladay Street, Suite 900, Portland, Oregon, 97232

1.2 WORKING DAY

A. Except in the case of emergency or unless otherwise approved by the Owner, a working day shall be defined as between 7:00 a.m. and 5:00 p.m. and a 5-day work week Monday through Friday, excluding City holidays. Any additional hours (work outside of the 7:00 a.m. to 5:00 p.m.

work limits, weekends or City holidays) must be approved by the Owner.

1.3 STANDBY TIME

A. Time lost to the project schedule can be expected during the course of project execution due to unavoidable and unforeseen events.

B. Time lost to the project due to such circumstances may be originated by the Owner or the

Contractor.

C. Time lost from stoppage of work at the request of the Owner shall be defined as “standby time.”

D. Standby time is the duration of idle time greater than four (4) hours accrued at the request of the Owner.

E. The Contractor’s workers and equipment shall remain onsite while standby time is in effect.

F. In the event of standby time, the Owner shall pay the Contractor for equipment and crew per hour, not to exceed eight (8) hours per working day between 7:00 a.m. and 5:00 p.m.

G. No standby time will be paid during time to order and ship materials, time to evaluate well performance data (if a well rehabilitation is required), faulty equipment installed in the well, or faulty contractor equipment.

1.4 DELAY TIME

A. Time lost due to the inability of the Contractor to proceed shall be defined as “delay time.”

B. Delay time is defined as avoidable delays greater than four (4) hours caused by neglect in planning and improper scheduling or sequencing of work by the Contractor.

C. These items shall include, but are not limited to, the Contractor’s tardiness and inability to provide the trained staff and adequate equipment in a reasonable manner.

D. Delay time shall not include time lost to the project as a result of conditions beyond the

Contractor’s control. These unavoidable delays shall include, but are not limited to, inclement weather and unexpected or unusual conditions.

E. In the event of delay time, the Contractor shall credit the Owner for the Owner’s Representative’s time onsite for the period where delay time is in effect, not to exceed eight (8) hours per working day. The Contractor may give a 12-hour notice to the Owner that there will be a delay without being assessed delay time in the event of equipment breakdown and parts not easily attainable and must be ordered. Shorter notice may suffice at the Owner’s discretion.

00 71 00: Contracting Definitions

Section 00 71 00 - 7

F. If the total amount of standby hours exceeds the total amount of delay time hours, the Contractor shall be paid for the difference as shown in the formula below:

((Standby hours)(Standby Hourly Rate) – (Delay Hours)(Delay Hourly Rate)) = Total Standby time payment

G. If the total amount of delay hours exceeds the total amount of stand-by time hours, the Contractor shall be charged for the difference as shown in the formula below:

((Delay hours)(Delay Hourly Rate) – (Standby Hours)(Standby Hourly Rate)) = Total Delay time charge

H. If there are an equal amount of standby hours and delay hours, the equation in Parts F and G shall be used to determine the payment to the Contractor.

1.5 AUTHORIZED HOURLY WORK

A. Authorized hourly work shall include furnishing all equipment, labor, tools, and miscellaneous materials necessary to conduct activities not covered under other bid items, and as pre-approved by the Owner in writing. The Owner and the Contractor shall maintain records for this work. The Owner’s record will be binding.

B. No hourly payment will be made to the Contractor for work being performed to repair, clean, or replace equipment that is not in working condition; redo defective workmanship; or correct failed performance.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

01 11 00: Summary of Work City of Gresham – Cascade Wells 6A and 6B Section 01 11 00 - 8

SECTION 01 11 00

SUMMARY OF WORK

PART 1 - GENERAL

1.1 WORK SUMMARY

A. The work described in these specifications includes a well video inspection, well disinfection, mechanical brushing (if necessary), zonal impulse generation with simultaneous pumping (if necessary), construction of a chlorination system for each of two municipal wells completed in the Sand & Gravel Aquifer (SGA), and installation of wellhead covers.

B. The Contractor shall supply all materials, labor, appurtenances, equipment and incidentals necessary, and shall perform all operations and testing required to finish the work as specified under this contract.

1.2 WORK SEQUENCE

A. The anticipated work sequence for the project is provided below.

1. Inspect pump from Cascade 8 and assess need for repair or replacement

2. Mobilization

3. Video Logs of Cascade Wells 6A and 6B

4. Well 6B Work

a. Mechanical brushing and bailing (if necessary based on video)

b. 8 hours of zonal impulse generation with simultaneous pumping (if necessary based on video), bailing, and topping off the silica sand filter pack

c. Installation of Well 6B chlorination system, including wellhead retrofits

d. Allow 4 hours between installation of the chlorination system and well disinfection for

Owner’s Representative to collect a water quality sample. Shakedown and commissioning of chlorination system

e. Purge well and dechlorinate purge water

5. Well 6A Work

a. Mechanical brushing and bailing (if necessary based on video)

b. 8 hours of zonal impulse generation with simultaneous pumping (if necessary based on video), bailing, and topping off the silica sand filter pack

c. Purge well and dechlorinate purge water

d. Installation of Well 6A chlorination system, including wellhead retrofits

e. Shakedown and commissioning of chlorination system

6. Construction of a concrete pad and installation of wellhead covers

7. Cleanup and demobilization

B. An alternative work sequence may be proposed by the Contractor for review by the Owner and Owner’s Representative.

PART 2 - PRODUCTS

2.1 MATERIALS PROVIDED BY THE OWNER FROM CASCADE 8

A. Pump Riser Pipe – 30 pieces, steel, 2-inch diameter, 20 to 21-foot length B. Pump Riser Pipe – 27 pieces, steel, 1-1/4-inch diameter, 20 to 21-foot length

01 11 00: Summary of Work City of Gresham – Cascade Wells 6A and 6B Section 01 11 00 - 9

C. Tremie Pipe – 17 pieces, Schedule 120 PVC, 1-inch diameter, 20-foot length D. Water Level Access Tube – 40 pieces, Schedule 80 Flush Joint PVC, 1-inch diameter, 10-foot length E. 1 Pump F. 1 5 HP 3-Phase motor G. 1 Roll of #10 Flat Jacket Sub Wire (Roughly 1200ft) H. 1 24" Blind Flange with Ports I. Electrical Junction Box J. Discharge Line K. S/O Cord

PART 3 - EXECUTION

01 14 00: Work Restrictions

Section 01 14 00 - 10

SECTION 01 14 00

WORK RESTRICTIONS

PART 1 - GENERAL

1.1 SITE ACCESS

A. The work site is accessible via the western border of the parking lot for the property at 22514

SE Stark St, Gresham, OR 97030 (see Exhibit A). The site access gate is the only access in and out of the well site and it shall be locked by the Contractor outside of working hours.

1.2 WORK LIMITS AND HOURS

A. The Contractor shall limit work to the following daily schedule; Monday through Friday, 7:00 a.m. to 5:00 p.m. The Contractor shall not work on City holidays.

B. The Contractor shall obtain approval from the Owner prior to conducting work on weekends, City holidays, or outside of the 7:00 a.m. to 5:00 p.m. work limits.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

01 22 00: Measurement and Payment

Section 01 22 00 - 11

SECTION 01 22 00

MEASUREMENT AND PAYMENT

PART 1 - GENERAL

1.1 UNIT PRICE WORK

A. The unit prices listed in this section represent identifiable materials and work activities for the project that require the establishment of unit prices. The unit prices listed in this section are provided in order of work sequence.

B. The unit prices provided by the Contractor shall include costs for (but not limited to) all necessary materials, delivery of materials, labor, outside fees, insurance, taxes, and overhead to complete the associated work activity as described in these specifications. Additional labor, materials, equipment, or other items not described in these specifications but necessary to complete must be pre-approved by the Owner’s Representative as authorized hourly work and/or executed through a change order.

C. The estimated quantities of unit price work are non-guaranteed and are solely for the purpose of bid comparison and also in determining an initial contract amount. The Owner reserves the right to limit (reduce) any aspect of the project or work for any reason without a change to the unit prices. There shall be no recourse by the Contractor for loss of project revenue or value as a result of reduced work.

D. The estimated quantities of unit prices are based on preliminary designs and are subject to change based on conditions encountered during the project. The Contractor shall not deviate from the estimated quantities of unit prices without prior approval from the Owner and/or the Owner’s Representative.

E. The Contractor shall continuously maintain itemized documentation of unit price work performed in accordance with generally accepted accounting practices and submit documentation to the Owner upon request or as backup information for Contractor pay requests.

F. Measurement units for unit price work may be provided as Lump Sum, Hours, Cubic Feet, and Each, or as further described in this section.

G. Payments to the Contractor for unit price work shall be based on the terms described in this section.

H. The contract will be awarded based on total cost for all sections on the Bid Form including Additive work items.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

3.1 MOBILIZATION / DEMOBILIZATION

A. The measurement unit and payment for this work is Lump Sum as stated in the Bid Form for

Bid Item No. A-1.

B. The Lump Sum price shall be full compensation for all labor and materials required to install the well chlorination systems, including: (1) transport of personnel, equipment, and operating

Section 01 22 00 - 12 supplies to and from the work site; (2) preparing the site for work; (3) removing materials and equipment; (4) site cleanup; (5) and demobilizing from the work site after the work has been completed.

C. Progress payments for this bid item shall be made in accordance with the following schedule:

1. Mobilization to the site and set up for installation of chlorination systems: 50 percent.

2. Site cleanup, demobilization, and submittal of any requested documentation to Owner’s

Representative: 50 percent.

3.2 SPILL PREVENTION, CONTROL, AND COUNTERMEASURES

A. The measurement unit and payment for this work is Lump Sum as stated in the Bid Form for

Bid Item No. A-2.

B. The Lump Sum price shall be full compensation for all labor, materials, and equipment required to provide, install, maintain, and remove spill prevention and control devices and measures at the work site in accordance with the approved plans and submittals and provisions of the contract.

C. The Lump Sum price shall include all costs associated with preparing the Spill Prevention, Control, and Countermeasures Plan and removing or replacing degraded measures with new materials or equipment by the Owner or Owner’s Representative.

D. Progress payments for this bid item shall be made in accordance with the following schedule:

1. When the Spill Prevention and Control plan has been approved and all spill prevention and control systems and materials are in place at the work site and have been inspected and approved by the Owner’s Representative: 50 percent.

2. Upon completion of final inspection and approval from the Owner or Owner’s Representative: 50 percent.

3.3 WATER AND SOLIDS MANAGEMENT

A. The measurement unit and payment for this work is Lump Sum as stated in the Bid Form for

Bid Item No. A-3.

B. The Lump Sum price shall include all equipment, tools, labor, and incidental supplies needed to manage, remove, and properly dispose of water and solids generated during the work, and shall include all costs associated with preparing the Water and Solids Management Plan.

C. Progress payments for this bid item shall be made upon final inspection and approval from the Owner or Owner’s Representative.

3.4 VIDEO SURVEY

A. The measurement unit for this work is Each for each video survey completed as stated in the

Bid Form for Bid Item Nos. B-1 and C-1.

B. The price for each well video survey completed shall include all labor, equipment, tools, and materials to complete the well video survey.

C. Measurement shall be completion of the survey and delivery of the well video to the Owner’s

Representative.

D. The price for each well video survey shall be as set forth in Bid Form Item Nos. B-1 and C-1.

E. There shall be no additional payment for rig time or idle time while the surveys are being conducted. Payment shall not be made if the video is poor quality, or if the video does not cover the specified depth interval. The Contractor shall not be paid for standby time while the well is being flushed and/or while the Contractor is waiting for the well to clear.

F. Progress payments for this bid item shall be invoiced monthly upon completion and acceptance of the video survey, and delivery of the digital media or other pre-approved media to the Owner’s Representative.

Section 01 22 00 - 13

3.5 WELL CHLORINATION SYSTEM INSTALLATION AND TESTING

A. The measurement unit for this work is Lump Sum as stated in the Bid Form for Bid Item Nos. B-

2 and C-2.

B. The Lump Sum price for all work associated with surface completion at the wellhead, and shall include all labor, equipment, tools, and materials.

C. Measurement shall be completion of the chlorination system as shown in Exhibit B (Cascade

6A) and Exhibit C (Cascade 6B) and successful operation of the chlorination system as approved by the Owner’s Representative.

D. The Lump Sum price for the surface completion shall be as set forth in Bid Form Item Nos. B-2 and C-2.

3.6 WELL DISINFECTION CHEMICALS

A. The measurement unit for well disinfection chemicals is Gallons as stated in the Bid Form for

Item Nos.B-3 and C-3.

3.7 WELL PURGING

A. The measurement unit for purging the well and treating the purge water to neutralize residual chlorine shall be Hours as stated in the Bid Form for Bid Item Nos. B-4 and C-4.

B. Payment shall be at the unit price specified in the bid form submitted by the Contractor for this project and shall include all labor, materials, and equipment required to purge the well and dechlorinate the purge water.

3.8 MECHANICAL BRUSHING (IF NECESSARY)

A. The measurement unit for mechanical brushing is Hours as stated in the Bid Form for Bid Item

Nos.B.1-1 and C.1-1.

B. Measurement for payment shall be rounded to the nearest ½-hour. Payment shall be at the unit price specified in the bid schedule submitted by the Contractor for this project multiplied by the number of hours and shall include all labor, materials, and equipment to implement mechanical rehabilitation activities.

C. If additional time is required and approved by the Owner’s Representative beyond what is indicated in these specifications, then the Contractor shall be reimbursed for the additional time on a per hour basis at the per hour price specified.

3.9 ZONAL IMPULSE GENERATION WITH SIMULTANEOUS PUMPING (IF NECESSARY)

A. The measurement unit for impulse generation with simultaneous pumping is Hours as stated in the Bid Form for Item Nos. B.1-2 and C.1-2.

B. Measurement for payment shall be rounded to the nearest ½-hour. Payment shall be at the unit price specified in the bid schedule submitted by the Contractor for this project multiplied by the number of hours and shall include all labor, materials, and equipment to implement zonal isolation impulse generation activities and airlift pumping.

C. If additional time is required and approved by the Owner’s Representative beyond what is indicated in these specifications, then the Contractor shall be reimbursed for the additional time on a per hour basis at the per hour price specified.

3.10 REMOVE AND REATTACH CONE REDUCER (IF NECESSARY)

A. The measurement unit to remove and reattach the cone reducer is Lump Sum as stated in the

Bid Form for Item No. B.1-3.

B. The Lump Sum price shall include all labor, equipment, and materials to remove and install the cone reducer.

Section 01 22 00 - 14

C. Progress payments for this bid item will be made upon successful reattachment of the cone reducer and approval from the Owner’s Representative.

3.11 FILTER PACK SAND (IF NECESSARY)

A. The measurement unit for this work is Cubic Feet of filter pack sand furnished and installed as stated in the Bid Form for Item Nos. B.1-4 and C.1-3.

B. Payment shall be the unit price set forth in the Bid Form for Item Nos. B.1-4 and C.1-3 multiplied by the cubic footage of filter pack envelope furnished and installed.

C. No separate payment will be made for time while filter pack material is added to maintain the filter pack.

3.12 ADDITIVE MATERIALS AND LABOR FOR CASCADE 6B (IF NECESSARY)

A. The measurement unit for additive work items are as stated in the Bid Form for Item Nos. C.1-4 through C.1-13.

B. Payment shall be the unit price set forth in the Bid Form for Item Nos. C.1-4 through C.1-12 multiplied by the number of pre-authorized units recorded and pre-approved by the Owner’s Representative.

C. The Lump Sum price shall include all equipment, tools, labor, and incidental supplies needed for all work associated with Bid Item C.1-13.

3.13 CONCRETE PAD AND WELLHEAD COVER INSTALLATION

A. The measurement unit for this work isEach as stated in the Bid Form for Bid Item No. D-1.

B. The Lump Sum price for all work associated with construction and completion of the concrete pad and wellhead cover installation, and shall include all labor, equipment, tools, and materials.

C. Measurement shall be installation of the wellhead covers as specified and acceptance of the wellhead cover installation completion by the Owner’s Representative.

D. The Lump Sum price for the surface completion shall be as set forth in Bid Form Item No. D-1.

3.14 STANDBY TIME

A. The measurement unit for this work is Hours as stated in the Bid Form for Bid Item No. E-1.

B. Measurement for payment shall be rounded to the nearest ½-hour.

C. The value for payment shall be calculated by the formula in 00 71 00 Part 1.4.

D. No separate payments under this bid item will be made for work that is covered by other bid items.

3.15 AUTHORIZED HOURLY WORK

A. The measurement unit for this work is Hours as stated in the Bid Form for Bid Item No. E-2.

B. Measurement for payment shall be rounded to the nearest ½-hour.

C. The value for payment shall be the unit price multiplied by the number of pre-authorized hourly work hours recorded and pre-approved by the Owner’s Representative.

D. No separate payments under this bid item will be made for work that is covered by other bid items.

01 33 00: Submittal Procedures

Section 01 33 00 - 15

SECTION 01 33 00

SUBMITTAL PROCEDURES

PART 1 - GENERAL

1.1 SUBMITTAL PROCEDURES

A. The Contractor shall submit the items listed in this section. The Owner’s Representative reserves the right to request additional submittals that are not included in this section.

B. Unless otherwise specified, the Contractor shall provide all submittals to the Owner’s

Representative.

C. The Contractor is responsible for coordinating the timing of all submittals to avoid work delays associated with the Owner’s Representative’s review of submittals.

D. The Contractor shall not begin work on a work activity until all the required submittals listed in this section have been approved by the Owner’s Representative.

E. Throughout the duration of the project, the Contractor shall submit any proposed deviations from the specifications or changes to equipment layouts, materials, or well design to the Owner’s Representative for approval prior to implementation.

F. The Contractor shall not be granted a Contract extension, nor paid standby time, for delays that are caused by the Contractor’s failure to provide the required submittals at the Time of Submittal listed in Part 1.2, Paragraph F of this section.

1.2 SUBMITTAL REVIEWS

A. The Owner’s Representative shall review and approve each submittal.

B. The Owner’s Representative’s review of the submittals is applied to the general characteristics and to a general plan only. Submittal review by the Owner’s Representative does not in any way release the Contractor from the responsibility to comply with the requirements of the contract documents and for the proper fit, construction sequences, dimensions, and quantities.

C. The Owner’s Representative’s review does not constitute acceptance of departures from the contract documents, from supplementary drawings or instructions, and from applicable codes, laws, or ordinances, or from boards, commissions, and departments having jurisdiction. The Contractor shall make special note by separate letter and clearly mark on the submittal any deviations from the contract documents.

D. It is the responsibility of the Contractor to confirm that all specifications, dimensions, and materials will result in the successful completion of the project as described herein and as may result from changed conditions encountered during installations.

E. The Contractor shall revise and resubmit all submittals as required by the Owner’s Representative.

F. List of Submittals:

1. The following table outlines a list of submittals that the Contractor shall provide prior to, during, and at the conclusion of the project:

01 33 00: Submittal Procedures

Section 01 33 00 - 16

Submittal Specifications Location Timing of Submittal (business days) Section Part Paragraph

Health and Safety Plan 01 71 13 1.1 A Prior to mobilization Construction Schedule 01 71 13 1.1 B At Pre-Construction Conference Weekend / Emergency Contacts 01 71 13 1.1 C At Pre-Construction Conference List of Proposed Materials 01 71 13 1.1 D Prior to mobilization Safety Data Sheets 01 71 13 1.1 E Prior to mobilization

Water and Solids Management Plan 01 57 00 1.2 A Prior to mobilization

Spill Prevention, Control, and Countermeasures Plan 01 57 00 1.2 B Prior to mobilization

Daily Logs 01 71 13 1.1 F Weekly

Well Video Log 33 01 12.15 1.1 B Within five business days of well video completion

Well Disinfection Materials and Methods / System Commissioning Plan

33 01 10.57 1.2 A At Pre-Construction Conference

Concrete Pad and Wellhead Cover Construction Drawings 13 34 23 1.1 A One week prior to installation

As-Built Diagram of Well Chlorination System 01 71 13 1.1 G Up to one week after demobilizing

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

01 51 00: Temporary Utilities

Section 01 51 00 - 17

SECTION 01 51 00

TEMPORARY UTILITIES

PART 1 - GENERAL

1.1 TEMPORARY SANITARY FACILITIES

A. The Contractor shall provide and maintain a portable sanitation facility throughout the duration of the project on the work site.

1.2 TEMPORARY POWER SUPPLY

A. The Contractor shall make all arrangements necessary to obtain sufficient power for the activities to be performed as stated in these specifications.

B. The Contractor shall provide power using a Whisperwatt generator or approved equivalent. The

Contractor shall be responsible for operating and maintaining the generator.

1.3 TEMPORARY POTABLE WATER SUPPLY AND DISINFECTANT

A. The Contractor shall be responsible for supplying potable water and disinfectant as needed for the work.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

01 57 00: Temporary Controls

Section 01 57 00 - 18

SECTION 01 57 00

TEMPORARY CONTROLS

PART 1 - GENERAL

1.1 REFERENCE STANDARDS

A. State of Oregon:

1. OAR Chapter 690 Divisions 200, 205, 210, and 215

2. OAR 333-061-0005 through 333-061-0098

B. American Water Works Association (AWWA):

1. A100-20, Standard for Water Wells

2. C654-21, Standard for Disinfection of Wells

1.2 SUBMITTALS

A. Water and Solids Management Plan:

1. Prior to mobilization, the Contractor shall prepare and submit a Water and Solids Management Plan describing the Contractor’s plan for the purging, dechlorination, and disposal of water and solids generated during the project to the Owner’s Representative for approval.

2. The Water and Solids Management Plan shall include specifications of all water management equipment (i.e., material type, size, capacity, etc.) and chemical type and concentration needed for suitable dechlorination of discharge water. All facilities and piping shall be sized and constructed by the Contractor to accommodate temporary water storage needs and flow and treatment requirements for proper disposal of water produced during the project.

B. Spill Prevention, Control, and Countermeasures Plan:

1. Prior to mobilization, the Contractor shall develop and submit a spill prevention, control and countermeasures (SPCC) plan that that addresses the provisions of Section 00290 of ODOT’s 2024 Oregon Standard Specifications for Construction. A copy of the SPCC plan shall be submitted to the Owner’s Representative for approval.

1.3 NOISE LIMITS

A. The Contractor shall use all reasonable and available means to reduce noise to minimum levels during working hours. The Contractor shall review the site and understand the relationship of the site to surrounding facilities.

B. Construction noise shall only occur between 7:00 a.m. and 5:00 p.m., Monday through Friday, unless a noise variance or permit is obtained in advance from the Owner.

C. To aid in noise mitigation, the Contractor shall provide power using a Whisperwatt generator or approved equivalent if a generator other than a City-provided generator is needed.

D. The Owner reserves the right to establish and implement noise limits at any time during the project, if necessary.

1.4 SITE SECURITY

A. The Contractor shall secure the work area used for material storage including areas occupied by construction equipment, piping, and other equipment.

B. Whenever the Contractor is off-site, the permanent fencing and gates shall be locked/secured and the wellhead shall be secured.

Section 01 57 00 - 19

1.5 WATER AND SOLIDS MANAGEMENT

A. Any non-turbid water that is generated/discharged from mechanical rehabilitation, should it be necessary and approved by the OWNER, or water produced during system commissioning shall be dechlorinated and discharged to either of the two drywells at the site as shown in Exhibit A.

B. In no case shall turbid water be discharged to the on-site drywells. Turbid water shall be discharged to the ground initially, and switched to the drywells after turbidity decreases to less than 50 NTU. In no case shall water be permitted to migrate off site.

C. Water purged from the well shall be dechlorinated prior to discharge to the onsite drywells using Vita-D-Chlor or approved NSF60 equivalent.

D. Any solids that are generated during mechanical rehabilitation, should it be necessary and approved by the owner, shall be applied to the ground at the site and spread evenly to maintain existing surface conditions.

E. Installation of water and solids management measures in accordance with the Contractor’s approved Water and Solids Management Plan shall not relieve the Contractor of any responsibility for enforcement actions resulting from regulatory violations.

1.6 SPILL PREVENTION, CONTROL, AND COUNTERMEASURES

A. Special precautions shall be taken by the Contractor to prevent contamination of the work site and surrounding area. This shall include: (1) staging of equipment and materials to prevent the spread of fuel or other contaminant spills, (2) steam cleaning and disinfecting all tools prior to their arrival onsite, and prior to use down-hole if they have been staged directly on ground surface, and (3) installation of an impermeable barrier beneath drilling rigs with the edges “bermed up” to prevent spills from impacting surface soils.

B. Use of hydrocarbon products other than fuel, motor oil, hydraulic oil and grease normally used for the equipment necessary for well rehabilitation and chlorination system installation activities shall be minimized. All lubricants or oils used on pipe threads or other equipment that could be discharged or otherwise come into contact with well materials and groundwater shall be NSF certified for use in potable water applications, and adequate measures shall be taken to prevent all oil, fuel and other fluid spills onsite.

C. The Contractor shall have a spill response kit onsite that includes sufficient materials and equipment to control and prevent discharge of spills offsite or into site drywells.

D. Drip pans or other protective devices shall be required for all oil, fuel or chemical transfer operations.

E. Contractor personnel shall be familiar with the SPCC plan and trained in the use of spill prevention and response equipment.

F. The Contractor shall be responsible for all expenses associated with spill containment and clean-up should any potentially hazardous materials spills occur.

PART 2 - PRODUCTS

2.1 CHLORINE NEUTRALIZER

A. The Contractor shall provide Vita-D-Chlor or approved NSF60 equivalent to dechlorinate purge water prior to the discharge of purge water to the onsite drywells.

Section 01 57 00 - 20

PART 3 - EXECUTION

01 71 13: Mobilization and Demobilization

Section 01 71 13 - 21

SECTION 01 71 13

MOBILIZATION AND DEMOBILIZATION

PART 1 - GENERAL

1.1 SUBMITTALS

A. Health and Safety Plan:

1. Prior to mobilizing to the work site, the Contractor shall develop and submit a project-specific health and safety plan that documents procedures that will be followed to protect worker safety while onsite. The Contractor shall be solely responsible for the health and safety of its employees.

B. Construction Schedule:

1. At the Pre-construction Conference, the Contractor shall submit a detailed construction schedule, which shall be followed by the Contractor throughout the duration of the contract and updated as needed.

C. Weekend / Emergency Contacts:

1. At the Pre-construction Conference, the Contractor shall submit the names, addresses, and telephone numbers of two or more persons employed by the Contractor who can be reached during evening and weekend hours or during emergency events.

D. List of Proposed Materials:

1. Prior to mobilizing to the work site, the Contractor shall submit a list of all materials proposed to be furnished for the project showing the supplier’s name and address, the manufacturer’s name and product identification number, and catalog cut sheets to clearly identify materials.

E. Safety Data Sheets (SDS):

1. Prior to mobilizing to the work site, the Contractor shall submit SDSs for all hazardous chemical products to be stored or used by the Contractor for the project.

F. Daily Logs:

1. Daily work activities and logs shall be prepared by the Contractor’s field staff and shall be submitted to the Owner’s Representative at the end of every week. Daily logs shall include the following information, at a minimum:

a. General project identification (well name and location).

b. The depth to water prior to commencing activities each day.

c. The type and quantity of any materials used each day, including, but not limited to, chemical types and amounts, and chemical mixing volumes and concentrations.

d. The duration of activities throughout the day.

e. Records of chlorine concentrations and mixing volumes used for well disinfection.

f. Results of the downhole color video survey of each well.

g. Records of mechanical rehabilitation (if necessary), including, but not limited to methods of mechanical rehabilitation, depth intervals, and durations of rehabilitation efforts.

h. Records of bailed materials (if necessary), including appearance of discharge water and nature and volume of solids removed.

G. As-Built Diagram of the Well Chlorination System:

1. Prior to demobilizing from the work site, the Contractor shall submit an as-built diagram of the chlorination system for each well that includes dimensions and materials used.

01 71 13: Mobilization and Demobilization

Section 01 71 13 - 22

1.2 SITE PREPARATION AND MOBILIZATION

A. It is the Contractor’s responsibility to visit the site and to assess any effort that may be required to prepare the site for inspecting, rehabilitating, and disinfecting the wells. The Contractor shall be responsible for communicating access improvement and schedule requirements to the Owner and Owner’s Representative.

B. An additional locking structure for the Contractor’s tools and equipment (e.g. Conex Box) is recommended but not required. The Contractor shall bear all costs associated with obtaining and/or use of a storage container during the project at no expense to the Owner. It is the Contractor’s responsibility to prevent theft or vandalism of any of the Contractor’s equipment or materials that are left at the site of the wells.

C. Exhibit A provides a map of the work site with the locations of Cascade 6A, Cascade 6B, and two drywells.

D. The Contractor shall be responsible for appropriately managing and properly disposing of water (i.e., through use of the Site’s drywells) generated during mechanical rehabilitation activities, if necessary.

1.3 SITE CLEANUP AND DEMOBILIZATION

A. At the completion of the project, the Contractor shall be responsible for removing all equipment, tools, unused materials, trash, and any other items brought to the work site, leaving the work site in a neat and presentable condition, satisfactory to the Owner.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

3.1 SITE PREPARATION

A. It is the Contractor’s responsibility to visit the site and to assess any effort that may be required to prepare the site for inspecting, rehabilitating (if necessary), and disinfecting the wells. The Contractor shall be responsible for communicating access improvement and schedule requirements to the Owner and Owner’s Representative.

3.2 SECURITY AND EQUIPMENT STORAGE

A. The Contractor is strongly advised to take any precautionary measures necessary to secure and protect any equipment brought to and used at the work site. The Owner or Owner’s Representative will not be responsible for any stolen, damaged, or vandalized equipment.

B. The Contractor shall ensure the work site is secured each night prior to leaving. Loss or delay of work as a result of theft, damage, or vandalism due to Contractor negligence (e.g., unsecured entrance gate, etc.) shall be considered delay time.

02 00 00: Existing Conditions

Section 02 00 00 - 23

SECTION 02 00 00

EXISTING CONDITIONS

PART 1 - GENERAL

1.1 SITE LOCATION

A. The project work site and drilling location is located within Gresham, Oregon and NW ¼ , NW

¼ , Section 3, T1S, R3E. The site location is presented in Exhibit A.

1.2 EXISTING SITE FEATURES

A. The site is adjacent to a gas station, located to the northwest, two single-building commercial stores located to the west, a retirement home located to the east, and residential homes located on the north and south sides of the site. The site is fenced to the north, east, and south, with access to the property through a gate in the fence to the east.

B. The Contractor shall employ all measures necessary to prevent damage to the property features located outside of the work site.

PART 2 - PRODUCTS

2.1 NOT USED

PART 3 - EXECUTION

13 34 23: Fabricated Structures

Section 13 34 23 - 24

SECTION 13 34 23

FABRICATED STRUCTURES

PART 1 - GENERAL

1.1 SUBMITTALS

A. Concrete Pad and Wellhead Cover Construction Drawings:

1. The Contractor shall provide a plan that includes the manufacturer’s specifications of the wellhead cover, the planned location of the wellhead cover and wellhead cover foundation in relation to the wellhead, the method and materials used to lay the foundation for the wellhead cover, and the method and materials used to secure the wellhead cover to the foundation.

PART 2 - PRODUCTS

2.1 CONCRETE PAD AND WELLHEAD COVER

A. The Contractor shall provide two pre-fabricated fiberglass wellhead covers and all tools and equipment required to install the wellhead covers. See Exhibit E for Fox Box Enclosure specifications.

B. The Contractor shall provide the necessary equipment and materials required to lay a foundation for the wellhead cover with a minimum six-inches of space between the foundation and the wellhead filled with gravel.

C. The foundation for the wellhead cover shall be thick enough to allow for adequate space above the wellhead to accommodate the chlorination system.

D. The Contractor shall provide the necessary equipment and materials required to secure the wellhead cover to its foundation.

E. The Contractor shall provide a means to secure the wellhead cover from vandalism (e.g. a lock).

2.2 CHLORINATION SYSTEM

A. The Contractor shall furnish and install the Chlorination System for Cascade 6A that is shown in Exhibit B.

1. The materials that comprise the chlorination system shall be new. See Exhibit B for anticipated depths and quantities of materials.

a. Unions

b. Ball, Check, and Pressure Reducing Valves

c. Reducer

d. Hose Bibs/Couplings

e. 5 HP 3-phase submersible pump and motor capable of circulating chlorine throughout the water column

f. Pump electrical lead

g. 2-inch diameter Schedule 80 PVC Pump Riser Pipe

h. Two (2) 1-inch diameter Schedule 120 Tremie Pipes

i. 1-inch diameter Schedule 80 PVC Water Level Access Tube

B. The Contractor shall construct the Chlorination System for Cascade 6B with materials provided by the Owner and sourced from a similar Chlorination System at Cascade 8. The Contractor shall procure additional materials as needed to complete the Chlorination System for Cascade

13 34 23: Fabricated Structures

Section 13 34 23 - 25

6B that is shown in Exhibit C and to ensure the system is operational. Materials provided by the Owner are listed in Section 01 10 00 Part 2.1.

1. A preliminary list of materials to be furnished by the Contractor is included below; the

Contractor is responsible for developing a complete list of required materials.

a. Unions

b. Ball, Check, and Pressure Reducing Valves

c. Reducer

d. Hose Bibs/Couplings

e. 10-feet of 1-inch SCH 120 PVC tremie pipe

2. Materials to be provided by the Owner from Cascade 8 for use in Cascade 6B are listed in 01 10 00 Part 2.1. The Contractor is responsible for any modifications to the equipment supplied by the Owner to install the Cascade 6B Chlorination System that is shown in Exhibit C.

PART 3 - EXECUTION

3.1 WELLHEAD COVER INSTALLATION

A. The Contractor shall lay a concrete pad on which the wellhead cover shall be installed and secured.

B. The Contractor shall install the wellhead cover and secure it to the concrete pad.

C. The Contractor shall install security measures (e.g., a lock) and provide the Owner with the key prior to demobilization from the site.

3.2 CHLORINATION SYSTEM

A. The Contractor shall install the Cascade 6B Chlorination System utilizing usable materials provided by the Owner. Any materials necessary for the installation of the Cascade 6B Chlorination System that are not provided by the Owner shall be supplied by the Contractor.

B. The Contractor is responsible for any modifications to the equipment supplied by the Owner to install the Cascade 6B Chlorination System that is shown in Exhibit C.

C. The Contractor shall then install the Cascade 6A Chlorination System using entirely new materials.

33 01 10.27: Disinfection of Water Supply Wells and System Commissioning City of Gresham – Cascade Wells 6A and 6B

Section 33 01 10.27 - 26

SECTION 33 01 10.57

DISINFECTION OF WATER SUPPLY WELLS AND SYSTEM

COMMISSIONING

PART 1 - GENERAL

1.1 REFERENCE STANDARDS

A. The following is a list of standards that may be referenced in this division:

1. American Water Works Association (AWWA):

a. C654-13, Standard for Disinfection of Wells

b. C654-21, Standard for Disinfection of Wells

A. State of Oregon:

1. OAR Chapter 690 Division 210

2. OAR 333-061-0005 through 333-061-0098

1.2 SUBMITTALS

A. Well Disinfection Materials/Methods and System Commissioning Plan:

1. Prior to the start of system commissioning and well disinfection, the Contractor shall develop and submit a chlorination system commissioning and well disinfection plan to the Owner’s Representative for approval that describes how the Contractor shall sequence system…