BVB-2026-0002 -Clarifier Maint Rpr Replacemt Svcs (FINAL).pdf

PART 1 BEST VALUE BID (BVB)

SOLICITATION TITLE: CLARIFIER MAINTENANCE, REPAIR, &

REPLACEMENT SERVICES

SOLICITATION NO.: BVB-2026-0002

Date Issued: October 9, 2026

Pre-Bid Conference: October 20, 2026 @ 2:00 PM (CT) Microsoft Teams Meeting Join on your computer or mobile app via:

https://www.microsoft.com/en-us/microsoft-teams/join-a-meeting Meeting ID: 269 336 748 434 42 Passcode: H4nf7NX7 Or call in (audio only) Conference Number: (+1) 936-755-1521 Conference ID: 767 871 711# (Please mute your phone for the duration of the call)

Pre-Bid Questions Deadline: October 28, 2026@ 2:00 PM (CT)

Solicitation Due Date: November 19, 2026@ 10:00 AM (CT)

Solicitation Contact Person:

Moises Salazar, Senior Procurement Specialist moises.salazar@houstontx.gov

PH: 832-395-9372

Project Summary: Supervision, labor, parts, tools, materials, equipment, supplies, facilities, training, and transportation necessary to provide precision repair services, replacement, scheduled inspections, performance tests, and certifications for clarifiers for Houston Public Works .

NIGP Code: 936-64

W/SBE Goal: WBE 2.00%, SBE 13.00%

I payment term is to pay 30 days after the receipt of invoice or receipt of goods or services, Code, Ch. 2251). However, the City may pay in less than 30 days, at its option, in return for an early payment discount from the vendor.

Jedediah Greenfield, Chief Procurement Officer

Date

PART 2 GENERAL INFORMATION

1.0 General Information

inspect, maintain, repair, and replace clarifiers for Houston Public Works.

The City intends to award one or more contracts to the qualified Bidder(s) to assist the City with the aforementioned project.

THIS IS A THREE (3) AWARD WITH TWO (2) ONE (1) YEAR OPTIONS TO EXTEND.

2.0 City of Houston Background

The City is the fourth largest City in the United States and is composed of 23 departments with multiple physical locations throughout the geographical boundaries of the City. The City has approximately 23,000 employees with approximately 500 employees involved in the procurement and/or contracting process. Contracts/Awards where the City must pay in excess of $100,000 are routed to City Council for approval. The annual volume of contracts and purchase orders issued by the City in the last five years has ranged from 19,000 to 23,000.

3.0 Texas Public Information Act

All information submitted to the City is subject to the provisions of the Texas Public Information Act (TPIA), located in Chapter 552 of the Texas Government Code. Bidders may mark any information submitted, including their financial information, as confidential, trade secret, proprietary, or any other designation of choice. The City will notify any Bidder should their information be requested under the TPIA and Bidder will have an opportunity to assert their own arguments to the Texas Attorney General as to why their information should be excepted from public disclosure.

4.0 Solicitation Schedule

Listed below are the important dates for this BVB.

EVENT DATE

BVB Issuance October 9, 2026 Pre-Bid Conference October 20, 2026 Deadline for Questions October 28, 2026 Solicitation Due Date November 19, 2026 Notification of Intent to Award (estimated) January 2027 Council Agenda Date (estimated) February 2027 Award Start Date (estimated) February 2027

PART 3 INSTRUCTIONS TO BIDDERS

1.0 PRE-BID CONFERENCE

A Pre-Bid Conference will be held at the date, time, and location indicated on the first page of the BVB document. Interested Bidder(s) are encouraged to attend. It will be assumed that potential Bidder(s) attending this meeting have reviewed the BVB in detail and are prepared to bring up any substantive questions not already addressed by the City.

2.0 ADDITIONAL INFORMATION AND SPECIFICATION CHANGES

Requests for additional information and questions shall be addressed to the Finance Department, Strategic Procurement Division, preferably by e-mail to moises.salazar@houstontx.gov or by telephone at (832) 395-9372 no later than the date and time shown on page one of this document. The City shall provide written responses to all questions received by Bidders prior to the solicitation due date.

Questions received from all Bidder(s) shall be answered by the City and made available to Bidder(s) who are listed as having obtained the BVB. Bidder(s) shall be notified in writing of any changes in the specifications contained within this BVB.

3.0 LETTER(S) OF CLARIFICATION

3.1 All Letters of Clarification and interpretations to this Solicitation shall be in writing. Any Letter of Clarification(s) or interpretation that is not in writing shall not legally bind the City. Only information supplied by the City in writing or in this BVB shall be used in preparing bid responses.

3.2 The City does not assume responsibility for the receipt of any Letters of Clarification sent to Bidder(s).

3.3 Bidders may submit no more than 25 questions relating to this solicitation. Should more than 25 questions be received from a single Bidder, the City will only respond to the first 25 questions received.

4.0 EXAMINATION OF DOCUMENTS AND REQUIREMENTS

4.1 Each Bidder shall carefully examine all BVB documents and familiarize themselves with all requirements prior to submitting a Bid to ensure that the Bid meets the intent of this BVB. Bidders are advised to carefully review all the requirements and submit all documents and information as indicated in this BVB.

4.2 Before submitting a Bid, each Bidder shall be responsible for making all investigations and examinations that are necessary to ascertain conditions and affecting the requirements of this BVB.

Failure to make such investigations and examinations shall not relieve the Bidder from obligation to comply, in every detail, with all provisions and requirements of the BVB.

4.3 The City shall bear no responsibility for submitting a Bid on behalf of any Bidder. Bidder(s) may submit their Bid any time prior to the solicitation due date. The Bidder remains responsible for ensuring that its Bid is received by the solicitation due date. The City assumes no responsibility for any Bid not received, regardless of whether the delay is caused by some other act or circumstance.

4.4 This BVB does not commit the City to award a Contract, issue a Purchase Order, or to pay any costs incurred in the preparation of a bid in response to this request.

4.5 The Bid must be signed by someone legally authorized to bind the Bidder. Bidders shall hold the pricing in the Bid for a minimum of 180 days.

5.0 CANCELLATION

The City has sole discretion and reserves the right to cancel this BVB, or to reject any or all Bids received prior to award.

6.0 POST-BID DISCUSSIONS WITH BIDDER(S)

The City reserves the right to conduct post-bid discussions with any Bidder(s).

7.0 BIDDING AND AWARD

It is the intent of the City to award, on the basis of overall best Bid meeting specifications for the entire award; however, the right is reserved to accept or reject in whole or in part any or all Bids received and to make an award on the basis of individual item, combination of items or overall best Bid, as it is deemed in the best interest of the City.

The City reserves the right, after the Bid due date, to increase or decrease quantities or to award by line item.

8.0 BID DISQUALIFICATION

The City may disqualify a Bid if the Bidder: 1) improperly or illegibly completes the information required by this solicitation; 2) fails to sign the Official Signature Page or improperly signs the Official Signature Page; 3) qualifies its Bid; or 4) improperly submits its Bid.

When requested, the Bidder shall present satisfactory evidence that the Bidder has regularly engaged in providing the commodities or performing the services as proposed, and has the capital, labor, equipment, and material to deliver the required commodities or perform the work.

9.0 SPECIAL BIDDERS NOTE

The specifications in this solicitation are to be bid exactly as published or amended by any letter(s) of clarification that may be issued pertaining thereto. The City reserves the right to request clarity of any bid after they have been received.

Provisions of this solicitation shall not be altered. Any alteration of figures or terms may invalidate the ns is not acceptable and may result in your Bid being determined as non-responsive.

If subcontractor involvement is required in the use of license, patent, or proprietary process, the Prime contractor is responsible for obtaining written authorization from the subcontractor to use the process or provide another process comparable to that which is required, and which is acceptable to the City, all at no additional cost or liability to the City.

10.0 COMPETITION INTENDED

the Solicitation Contact Person in writing if any language, requirement, specifications, etc., or any combination thereof, inadvertently restricts or limits the requirements stated in the BVB to a single source. Such notification must be received by the Solicitation Contact Person no later than seven (7) days prior to the solicitation due date.

11.0 REFERENCES

In order to receive bid award consideration, the Bidder must be able to demonstrate that it is currently providing or has had at least three (3) contracts, as a prime Vendor, for delivering goods or services that are similar in size and scope to this solicitation. The reference(s) should be included with the Bid.

If references are not included with the Bid, the Bidder shall be required to provide such references to the City within five (5) working days from receipt of a written request from the City to do references documenting that it has delivered goods or services that are similar in size and scope to this solicitation.

12.0 WITHDRAWAL OF BID

A bidder may withdraw its Bid before the solicitation due date, without prejudice, by submitting a written

13.0 REQUIRED FORMS/DOCUMENTS TO BE INCLUDED WITH BID

This section details the required forms that must be completed and submitted with the Bid.

1. Offer and Submittal form.

2. Official Signature Page, List of References, and List of Proposed Subcontractors (Exhibit I)

3. Signed W/S /SBE Participation Plan/Good Faith Efforts, , /SBE Subcontracting Agreement Terms

4. Declaration of Hire Houston First Designation (Exhibit II

5. City of Houston Ownership Information Form (Exhibit III)

6. Anti-Collusion Statement (Exhibit IV)

7. Conflict of Interest Questionnaire (Exhibit V)

8. Information and Documents as listed in Part 5 - Evaluation and Selection Process, 4.0 Evaluation Criteria Sections: 4.3 Financial Stability, 4.5 Technical Competence Requirements, 4.6 Experience / Expertise, and 4.7 Past Performance.

14.0 REQUIRED FORMS/DOCUMENTS TO BE SUBMITTED BY RECOMMENDED VENDOR ONLY

website but are not required to be submitted with the Bid. The City will request these forms, as applicable, to be completed and submitted to the City by the recommended/successful Bidder.

1. Insurance Requirements and Insurance Certificate

2. Requested information outlined in the scope of work and other additional relevant/supporting information.

3. Texas Ethics Commission, Certificate of Interested Parties (Form 1295). Create a certificate at https://www.ethics.state.tx.us/filinginfo/1295/

4 -1) pop1.pdf (houstontx.gov), Certification of Compliance with Pay or Play Program (POP-2) pop2.pdf (houstontx.gov), and List of Participating Subcontractors (POP-3) pop3.pdf (houstontx.gov).

PART 4 SCOPE OF WORK/ TECHNICAL SPECIFICATIONS

1.0 GENERAL REQUIREMENTS:

1.1 The Contractor shall furnish all supervision, labor, parts, tools, materials, equipment, supplies, and facilities necessary to provide precision repair services for clarifiers at various City of Houston ("The City"), Drinking Water (DWO) and Wastewater Operations (WWO) facilities. If requested by the User Department Representative (UDR), the Contractor shall demonstrate by means of adequate testing and documentation that the repaired unit has retained its operating efficiency. The cost for this operating efficiency test will be paid by the City.

1.2 The meaning of some specific terms as used in the contract/specifications is provided in Exhibit A ("Definitions").

1.3 Upon request from the UDR or Contract Technical Representative (CTR) and within one (1) working day, the Contractor shall inspect the clarifier(s). Contractor shall document the condition of the unit on the Field Inspection Form (Exhibit B1).

1.4 This specification covers the general requirements for the repair, overhaul, and testing of the clarifiers and all related components. This includes, but it is not limited to, concrete repair (to include resurfacing, leveling, sealing, painting, coating and assessing/repairing possible structural damage), center well repairs (to include pier to drive unit), rake repair/leveling, structural integrity and maintenance of torsion cage, collector arms, rakes, and replaceable blades/squeegees associated with skimmer arms/scum collectors, weir replacement/leveling, baffle replacement/leveling, all cover plates, hand rails and walkways/catwalks/beam bridge, grating, anchor bolts and mounting brackets, weir troughs maintenance/leveling, influent/effluent/spray piping (to include substructure piping), limit switches, external skimmer arm center piers (to include bearing maintenance/replacement), wheels (to include vulcanizing/alignment), shut-off valves, maintenance/repair/replacement of rotating scum collectors and associated mechanisms, torque switches/indicator calibration or operation and all integrated gearboxes.

1.5 The City forms and documents (Exhibits B1 through B8 and Exhibit F) included in the Agreement shall be used, as necessary, for each clarifier repair and/or replacement. All forms/documents are samples only; the actual forms/documents are subject to change by the CTR after award of the Agreement:

1.5.1 Field Inspection Form (Exhibit B1)

1.5.2 Equipment Release Authorization Form (Exhibit B2)

1.5.3 Teardown and Recommended Repair Report (Exhibit B3)

1.5.4 Recommended Repair Estimate Form (Exhibit B4)

1.5.5 Progress and Status Report Form (Exhibit B5)

1.5.6 Preventative and Predictive Maintenance Checklist (Exhibit B6)

1.5.7 Clarifier specifications listing the manufacturer, type, size, group, and the facility location of existing City clarifiers are located in Exhibit B7 for Wastewater Operations and Exhibit B8 for Drinking Water Operations.

1.5.8 Fees and Costs Schedule (Exhibit F)

1.6 All test equipment required for test results shall be calibrated at least annually against standards traceable to the National Institute of Standards and Technology (NIST) or equivalent standards laboratories. The Contractor shall establish, document, and maintain calibration records for test and measuring equipment used to demonstrate conformance of product to specified requirements.

1.7 Contractor shall be able to furnish copies of current environmental permits and demonstrate compliance with current environmental regulations.

1.8 The Contractor's facility shall be subject to inspection to verify that equipment and personnel deemed necessary to perform the type of repair services required under the Agreement are in place at the time of inspection.

1.9 Subcontractors to the Contractor, for the performance of work under the Agreement are subject to the same standards as the Contractor.

1.10 All Contractor and Subcontractor vehicles shall be placarded placarded may be asked to leave or may be turned away and not be allowed

1.11 Clarifiers at the City's water facilities are purchased and installed under the City's master specifications (latest edition), and require compliance with the applicable sections of the following standards and codes:

1.11.1 American National Standards Institute (ANSI)

1.11.2 Anti-Friction Bearing Manufacturing Association (AFBMA)

1.11.3 Institute of Electrical and Electronics Engineers (IEEE)

1.11.4 National Electrical Code (NEC)

1.11.5 National Electrical Manufacturers Association (NEMA)

1.11.6 American Society of Mechanical Engineers (ASME)

1.11.7 Occupational Safety and Health Administration (OSHA)

1.11.8 Texas Commission on Environmental Quality (TCEQ)

1.11.9 Texas Administrative Code (TAC)

1.12 Wherever this document refers to the following codes and standards, those specific sections of the codes/standards shall apply to repairs being performed by the Contractor:

1.12.1 Steel Structures Painting Council (SSPC)

1.12.2 Anti-Friction Bearing Manufacturing Association (AFBMA)

1.12.3 American Society for Non-Destructive Testing

1.12.4 City of Houston Electrical Code

1.12.5 American Society for Testing and Materials (ASTM)

1.12.6 Occupational Safety and Health Administration (OSHA)

1.12.7 Texas Commission on Environmental Quality (TCEQ)

1.12.8 Texas Administrative Code (TAC)

1.13 All markups shall be based on the Contractor's or subcontractor's actual original invoiced documents. Contractor shall submit these actual original invoices, as attachments, with the final invoice for payment by the City for the work performed by the Contractor.

1.14 All equipment removed from any Houston Water facility shall be documented on an Equipment Release Authorization Form (Exhibit B2).

1.15 At the Contractor's repair facility, Contractor shall disassemble the unit, inspect it, and prepare a scope of work to repair and replace parts with new original equipment manufacturer (OEM) parts, or equal or better.

1.16 If the Contractor plans to use parts other than OEM-specified parts, the Contractor shall obtain in advance of the use of such parts, written permission/approval from the UDR and/or CTR.

1.17 The City reserves the right to pick up all clarifier parts that are quoted by the Contractor to be replaced. This includes, but is not limited to, seals, bearings, gears, and other items of a clarifier unit.

Non-repairable units do not need to be reassembled.

1.18 If requested by the CTR, Contractor shall furnish parts needed for maintenance activities of clarifier units to be repaired by City personnel. Contractor shall charge the same price for these parts as scheduled in the bid forms under "Parts and Material."

1.19 Contractor shall ensure the Equipment Inventory number (El) tag remains attached to the equipment. Contractor shall notify the UDR and/or CTR if the (El) tag is damaged or missing.

1.20 Contractor shall install a stainless-steel identification tag stamped with the Contractor's Job Number and Repair Date to each gearbox housing. The tag shall be secured with stainless-steel drive pins. The cost of the identification tag shall be included as a part of the base cost of any repair.

1.21 Before disassembly, nameplate data shall be verified. Additionally, all missing or damaged parts shall be identified in writing, recorded, and special items shall be noted on the Teardown and Recommended Repair Form (Exhibit B3).

1.22 Upon receipt of any clarifier component, Contractor shall document all information about the condition of the unit and its parts, to include digital photographs of clarifier components. The condition of the clarifier unit shall be documented on the Teardown and Recommended Repair Form (Exhibit B3).

1.23 All illegible or defective nameplates shall be replaced upon completion of repair. All original nameplate information, except where changed, shall be stamped on a new stainless or aluminum nameplate. New nameplates shall be permanently attached with mechanical fasteners. The cost of a new nameplate shall be included as part of the base cost of any repair.

1.24 Delivery tickets and packing slips shall contain quantity, part number, description of commodity delivered, name of department or section, facility name to which the merchandise was delivered, City's ordinance number, contract number, signature of receiving employee, printed name, employee number, and the authorization release number.

1.25 The repair shop shall be able to verify all hours charged for the work performed. Where hourly work is performed on behalf of the City, Contractor and its subcontractors shall fully document the start of work, time spent on the job, and completion of each job. The documentation shall be punching card/timeclock or shop record, or any other mutually agreed method. All work shall be supported with copies of timecards and invoices submitted for verification purposes.

1.26 The City reserves the right to review all payments made to the Contractor by auditing any and all documents associated with the Agreement. Subject to such audit, any overpayments shall be recovered from the Contractor.

1.27 The intent of the Agreement is for the Contractor to do the repair specifically at the Contractor's facilities. The Contractor shall provide UDR with a list of the name(s) and location(s) of "all" shop{s) and subcontractors that shall be used for the specified repair work. Contractor shall obtain written approval for each shop and subcontractor used before start of the Agreement. If Contractor plans to use any subcontractor not on the list, Contractor shall obtain written approval from the CTR before subcontracting the work.

1.28 The City desires a single Contractor to perform work described in this solicitation but may be awarded to more than one Contractor by groups of clarifier units, as listed in the Facility Location List (Exhibits B-7 and B-8).

1.29 The repair shop shall be able to verify all hours charged for machine work. This applies to work performed by subcontractors or the Contractor. In-house work shall be supported with copies of timecards. This verification shall be submitted with the invoice.

1.30 Field "timesheets" shall be signed "daily" by the UDR, or a City employee designated by the UDR at the facility location, to include the City employee's ID number. If the UDR and the designated City employee are not available, Contractor shall contact the CTR. All timesheets shall be approved by the UDR on the last working day of each week.

1.31 The City shall be billed only for hours the Contractor works on City equipment, whether at either the City or Contractor's facility. Labor rate for work at a City facility shall not cover the travel expenses of the Contractor. Itemized travel time is not allowed.

1.32 The price of parts, materials, and cost of a replacement unit supplied for the Agreement shall be the total original invoiced cost to the Contractor, plus Contractor's quoted percentage (%) markup for the item. The Contractor shall submit supporting documentation with the final invoice.

1.33 Labor rates in the Fees and Costs (Exhibit-F) shall apply to all work performed by Contractor's personnel. All work performed by subcontractors shall be invoiced, including pricing and separate percentage (%) markup, under the line item for subcontractor work.

1.34 Wherever OEM documentation (such as an Operation and Maintenance Manual, etc.), specifies torque values, Contractor shall use a torque wrench and adhere to the OEM torque values.

1.35 Paint booths shall not be used for sandblasting.

1.36 All clarifier drive units, valves, rakes, or other parts subject to corrosion or rust with peeling paint or rust shall be sandblasted. The cost of sandblasting shall be included as a part of the base cost of any repair.

1.37 The Contractor shall be responsible for storage of the drive units and all parts. Any parts lost or damaged while in the possession of the Contractor shall be repaired or replaced at Contractor's expense.

1.38 All metal parts shall be checked for structural integrity and cracks and shall be repaired or replaced as needed.

1.39 All repairs shall be made to bring the equipment to OEM's specifications.

1.40 The enclosed Teardown and Recommended Repair Report (Exhibit B3) included in this document shall be used for each repair.

1.41 Terminal boxes and auxiliary equipment enclosures shall be made to meet OEM's specifications.

1.42 The Contractor/OEM Distributor/Shop shall use the OEM's latest list price with a discount percentage (plus or minus) applied to the lowest price list column in the price list for the price of parts, materials, and replacement units on the Agreement. The quoted discount percentage is subject to audit by the City.

1.43 The Contractor shall provide the City with a full set of repair records (including completed teardown sheets, work performed on the unit, and test run results including vibration levels at all bearings of the drive and prime mover) upon completion of work, if requested by the UDR and/or CTR.

Contractor shall establish and maintain the repair records for at least three (3) years from the date when the unit passed acceptance inspection and/or test.

1.44 All labor to perform teardown inspections, cleaning, disassembly, sandblasting, balancing, reassembly, painting, shop testing, and documenting shall be included as labor/base price for the clarifier overhaul or repair.

1.45 At a City location, all machinery and equipment that are undergoing maintenance or repair shall be locked-out/tagged-out (LOTO) to protect against accidental or inadvertent operation when such operation could cause injury to personnel, or damage to equipment. Only authorized personnel, including qualified electricians, mechanics, and operators, shall carry out LOTO.

1.46 Contractor shall provide the UDR/CTR with monthly written progress reports. These reports shall be e-mailed or faxed to CTR.

1.47 The UDR and the Contractor's manager shall meet once a month, at a minimum, to review records of completed work, work in progress, and any other contract-related matter. Any discrepancies shall be resolved at the time, and all backlogs shall be completed by the 10th of the following month.

"Backlog" is considered any work in progress that is not completed by the estimated due date from the Contractor. Estimated due dates shall not exceed times allocated in Section 3.16. The UDR shall provide the Contractor with a spreadsheet for tracking the job's cost and progress. Contractor shall update the spreadsheet to reflect changes in activities by the Contractor and to ensure availability of funds to perform the work.

2.0 REPAIR AND REPLACEMENT:

2.1 Contractor shall inspect, repair, and/or troubleshoot the clarifiers including accessories (subassemblies) of the clarifiers in lieu of replacement, unless the repair cost of a unit and/or subassemblies exceeds seventy 70 percent of the cost for replacing it with a new item. Generally, the 70 percent rule applies, but the City reserves the right to purchase or repair units based on clarifier unit economic evaluation and on various operational considerations.

2.2 Contractor shall attach quotes/invoices for UDR /CTR reviews when submitting work scope. For all major components such as shafts, gears, and gear assemblies, the repair work scope shall include the cost of a new item as well as the estimated cost to repair such item. Every work scope shall include the purchase price of a new unit identical to the one being repaired.

2.3 The CTR shall approve in writing the purchase of a new unit in lieu of repairs.

2.4 Replacement units and accessories shall be the same size and type as the existing ones, unless otherwise authorized in writing by CTR.

2.5 If the unit is considered "non-repairable," the Contractor shall reference Fees and Costs.

(Exhibit-F) and the line item for "Non-Repairable Shop Cost" to invoice for the work performed by the Contractor, including all costs associated with teardown, reports, and diagnostics.

2.6 The Contractor shall use the Fees and Costs (Exhibit-F) and line item, "Cost to Replace a Unit" to invoice the replacement cost.

3.0 SPECIFIC TASKS:

3.1 Upon request from the UDR or CTR and within one working day, Contractor shall inspect the clarifier(s) at the City's water facility. The Contractor shall document the condition of the unit on the Field Inspection Form (Exhibit B1). If repairs can be performed at the City's water facility at the time of inspection, the Contractor shall perform the needed repair and release/return the unit to operation within five (5) working days.

3.2 If the clarifier or unit can be repaired at a City facility, but additional parts and services are needed, Contractor shall notify the UDR and prepare a scope of work within 48 hours and submit it to the UDR for approval. The Contractor, upon receipt of approval and accusation of parts, shall complete the repair of the clarifier within five (5) working days and release/return the unit to operation.

3.3 If the clarifier or unit cannot be repaired at the City's water facility, Contractor shall notify the UDR. Within 48 hours, the Contractor shall disassemble the unit from the drive, remove it from the foundation, load it on Contractor's vehicle, and then transport and deliver the unit to Contractor's repair facility. The Contractor shall ensure that all openings to pipes, inlet and discharge of fluids, and housing openings are blocked/covered to prevent entry of rain, dirt, rodents, birds, and crawling animals. The covers for the openings shall be made of metal or plywood of sufficient thickness, strength, and rigidity, and shall be secured to resist damage by wind and rainstorms.

3.4 Contractor shall furnish hoist, crane, etc., for loading and unloading of the unit at both the City and Contractor's facilities.

3.5 Before disassembly of the unit at Contractor's shop, Contractor shall inspect the unit and then document the damaged and missing parts. In addition, the Contractor shall photograph the unit and sub-assemblies as they were received. These photographs and any subsequent photographs of the unit and its parts shall be part of the repair record.

3.6 Contractor shall chemically and mechanically clean all external surfaces, as required.

3.7 Contractor shall disassemble the unit and clean all internal parts.

3.8 Contractor shall inspect all components of the unit and critical areas to determine if clearances are within OEM tolerances and that parts meet manufacturer's specifications. If the manufacturer's data is not available, the tolerances shall be verified with the relevant tables (in industry standards) to ensure conformance.

3.9 When needed, the City shall assist the Contractor to obtain the OEM data from the manufacturers.

3.10 Contractor shall inspect the unit and its shaft for corrosion, erosion, chipping, and any other damages, and shall record these observations on the Teardown and Recommended Repair Report (Exhibit B3).

3.11 Contractor shall inspect the shafts for "roundness/run out" and determine if it is within OEM tolerance. If the manufacturer's data is not available, tolerances shall be verified with the relevant tables (in industry standards) to assure its conformance.

3.12 Contractor shall inspect the shaft extensions and key seats (keyways). Shaft extensions shall be smooth, polished, and concentric with the shaft center. Shaft extension dimensions shall be checked to determine if they are within OEM tolerance. If the manufacturer's data is not available, tolerances shall be verified with the relevant tables (in industry standards) to ensure conformance.

3.13 Contractor shall inspect each bolt for damaged threads.

3.14 Contractor shall determine the parts to be machined or replaced with new parts. At a minimum, Contractor shall replace all roller element bearings and seals when the original unit was furnished with such items.

3.15 For units which are being repaired at Contractor's facility, Contractor shall prepare and submit, within 10 working days, to the UDR, a scope of work to be performed on the unit. This good faith estimate shall include a brief description of the work to be performed, itemized cost for new replacement OEM parts, and any additional labor hours beyond what is required and specified to repair the unit. This work scope shall include the estimated time for delivery of parts and schedule to complete the work.

[See Recommended Repair Estimate Form (Exhibit B-4).] Contractor shall charge the City for shipping with NO markup. For each component that shall be repaired/replaced, quotes shall include:

3.15.1 Manufacturer quotes for each part/component purchased by Contractor or subcontractors.

3.15.2 Detailed labor hours required for the Contractor or subcontractors to repair, remove, install and/or replace when pricing is not included in Fees and Costs (Exhibit-F) as follows:

3.15.2.1 Detailed quotes from each subcontractor utilized to complete the repair work.

3.15.2.2 Labor details from Contractor/subcontractors to remove equipment.

3.15.2.3 Quotes from OEM to support proposed parts/components by Contractor/subcontractors.

3.15.2.4 Quotes from equipment rental companies, when applicable.

3.15.2.5 Parts shall be purchased by Contractor unless authorized by CTR and UDR.

3.15.3 CTR may require up to two (2) additional quotes for work to be performed by subcontractors.

3.16 Upon acceptance of cost estimate by the UDR and/or CTR, Contractor shall proceed with repairs. The Contractor shall commence work on the unit and complete the repair within the allocated time for delivery of such item:

3.16.1 Primary Drive: 4 weeks.

3.16.2 Secondary (intermediate) Drive: 6 weeks.

3.16.3 Final Drive: 12 weeks.

3.17 Contractor shall notify the UDR immediately if the Contractor cannot complete the job within the contractually agreed time period listed in Section 3.16. Contractor shall submit a detailed written explanation for the delay to the UDR with a new schedule for completing the job.

3.18 Contractor shall always maintain City's equipment in a clean and weather-protected storage area during the repair process.

3.19 All shaft assemblies shall be checked for Total Indicated Run-out (TIR) and recorded on the rotor information sheet. This test shall be carried out on a lathe.

3.20 Shaft seal surface, bearing journals, and coupling fit shall be micrometer-checked and recorded on the rotor information sheet.

3.21 End bells and bearing housing critical dimensions shall be micrometer-checked and recorded on the mechanical inspection sheet.

3.22 The above measurements shall be submitted to UDR, along with other data sheets during the teardown inspection.

3.23 Replacement bearings shall have an L 10 rating life in accordance with ANSI/AFBMA "equal to or longer" than OEM bearing.

3.24 After parts have been repaired, Contractor shall put together the rotating assembly and check it for correct, smooth operation. Contractor shall reassemble the unit, test, seal, and paint it, as required.

3.25 Contractor shall prepare the surfaces to be painted to machine-gray, a "metal finish" by blast cleaning to SSPC-SP5.

3.26 Surface of all units shall be primed and finished in an approved paint booth using the unit OEM standard painting system:

3.26.1 The minimum prime coat thickness shall be 3 mils OFT, dry film thickness (OFT).

3.26.2 The minimum finish coat thickness shall be 6 mils OFT, dry film thickness (OFT).

3.27 If OEM paint information is not available, the following City's standard specifications for surface coating of clarifiers and equipment shall be followed:

3.27.1 Primer and finish coats shall be two-component, rust-inhibitive, and with polyamide-cured epoxy coating with a re-coatable finish.

3.27.2 The prime coat shall be Ameron 38P, Tnemec 69, or equal.

3.27.3 The finish coat shall be Ameron 38S, Tnemec 69, or equal.

3.28 No deviation from the paint specification shall be allowed unless advance written approval for variance to paint specifications is given by the CTR.

3.29 The paint color shall be as the OEM standard for such units unless specifically requested otherwise in writing by the CTR.

3.30 Contractor shall return the repaired unit to the appropriate City facility and perform the following:

Set it on a foundation; check the leveling of the drive base and coupling; precision align the drive/chain/coupling; and reconnect lube piping and all electrical components. Contractor shall ensure that all shutdown systems/protections are operational before the test runs.

3.31 If requested by the UDR, Contractor shall couple and precision-align the drive sprockets/chain/coupling of units which had their drive replaced by City personnel. The charge for this service shall be based on the standard labor rate as shown in the Fees and Costs (Exhibit-F).

3.32 Contractor shall start the unit and check the lube system. The Contractor shall measure/record the vibration of the drive at DE and ODE in axial, vertical, and horizontal directions. Vibration readings shall be relevant to the clarifier component (i.e., primary, secondary or final drive) and be based on the normal operating speed.

3.33 The vibration levels shall be as specified by the OEM. If needed, the City will assist the Contractor in obtaining the OEM data from the manufacturers.

3.34 Alignment shall be adjusted, as required, before placing the unit into permanent service.

4.0 DRIVE UNIT INSPECTION AND REPAIR:

4.1 The Contractor shall provide a repair record and report showing the condition of drive units upon receipt, the repair work done, vibration levels, and the final test results.

4.2 During disassembly, the clarifier components and parts shall be visually inspected to determine and record/report the cause of failure.

4.3 The shaft assembly shall be inspected for wear, scoring, and cracks.

4.4 Shaft seal surface, bearing journals, and coupling fit shall be checked with a micrometer and recorded on the rotor information sheet.

4.5 Clarifier units that are overhauled-repaired at the Contractor's facility shall be thoroughly cleaned to be free from dirt, grit, grease, and oil, and shall be inspected for damage and repairs made to damaged areas.

4.6 Torch heating shall not be used for cleanup.

4.7 The bead or sandblasting shall be done with approved material.

4.8 Overhaul-Repair at Contractor's Facility (Overhaul-Repair): The following work scope shall be followed for all shop overhaul-repair of the clarifier units. All bearings, lip seals, and gaskets shall be replaced. Bearings shall be replaced with new OEM-specified bearings that have an L10 rating life as specified by the original OEM, or longer in accordance with ANSI/AFBMA. Equivalent bearing may be used if approved by the CTR. The price in the contract Fees and Costs (Exhibit-F) for Overhaul-Repair (Shop-Repair) of a clarifier unit shall include "all" costs of supervision, labor, tools, equipment, and supplies to complete the work specified herein for shop repair. The cost does not include the cost of the bearings or lip seals, and damaged, broken, or worn parts, which are reimbursable if authorized by the UDR. Cost shall be based on the unit prices included in the Fees and Costs (Exhibit-F).

4.8.1 Primary Drive Units:

4.8.1.1 Disassemble the gearbox: Single- or Multiple-stage units shall be treated as a whole unit.

4.8.1.2 Bead blast (inside/outside gearbox) or sandblast (outside gearbox only). Clean all parts as needed, inspect all parts, chase all tapped holes and deburr, and inspect bores, seal fits, and vents.

4.8.1.3 Clean and de-burr all input shaft covers and hone all machine faces.

4.8.1.4 Clean and de-burr the housing and hone all machine faces.

4.8.1.5 Clean and de-burr all seal housings and hone all machine faces.

4.8.1.6 Clean and de-burr the bearing housing and hone all machine faces.

4.8.1.7 Check all shafts for burrs, defects, tolerances, and repair/replace, as necessary.

4.8.1.8 Non-Destructive Testing (NDT): check gears for cracks, damage, wear, pitch, and tolerances.

4.8.1.9 During reassembly, check gear mesh and backlash on all shaft/gear assemblies; shim or adjust as necessary to bring within proper tolerances.

4.8.1.10 Paint the assembled unit.

4.8.2 Secondary (Intermediate) Drive Units:

4.8.2.1 Disassemble the gearbox: Single- or Multiple-stage units shall be treated as a whole unit.

4.8.2.2 Bead blast (inside/outside gearbox) or sandblast (outside gearbox only). Clean all parts as needed, inspect all parts, chase all tapped holes and de-burr, and inspect bores, seal fits, and vents.

4.8.2.3 Clean and deburr all input and output shaft covers and hone all machine faces.

4.8.2.4 Clean and deburr the housing and hone all machine faces.

4.8.2.5 Clean and deburr the seal housings and hone all machine faces.

4.8.2.6 Clean and deburr the bearing housing, and hone machined faces.

4.8.2.7 Check all shafts for burrs, defects, tolerances, and repair/replace, as necessary.

4.8.2.8 NDT check gears for cracks, damage, wear, pitch, and tolerances.

4.8.2.9 During reassembly, check gear mesh and backlash on all shaft/gear assemblies, shim or adjust as necessary to bring within proper tolerances.

4.8.2.10 Paint the assembled unit.

4.8.3 Final (Bull gear) Drive Units:

4.8.3.1 Disassemble the gearbox: Single- or Multiple-stage units shall be treated as a whole unit.

4.8.3.2 Sandblast (outside gearbox only) and clean all parts as needed. Chase all tapped holes, deburr, and inspect.

4.8.3.3 Inspect all races and replace, as needed.

4.8.3.4 Inspect all bearings and replace, as needed.

4.8.3.5 Replace all damaged or worn-out seals.

4.8.3.6 Clean and deburr the housings, and hone machined faces.

4.8.3.7 NDT check gears for cracks, damage, wear, pitch, and tolerances.

4.8.3.8 Assure that all drains are clear and replace drain piping and valves, as needed.

4.8.3.9 Paint the assembled unit.

4.8.3.10 Non-overhaul repairs includes, but not limited to clarifiers, concrete repair of clarifiers (to include resurfacing, leveling, sealing and assessing/repairing possible structural damage), center well/pier to drive unit/rakes leveling/correlation, structural integrity and maintenance of collector arms, rakes, replaceable blades or squeegees associated with skimmer arms, scum collectors, weir replacement/leveling, baffle replacement/leveling, all cover plates, hand rails and walkways, catwalks, beam bridges, grating, anchor bolts and trusses/mounting brackets, weir troughs maintenance/leveling, influent/effluent/spray piping (to include substructure piping), limit switches, external skimmer arm center piers (to include bearing maintenance/replacement), wheels (to include vulcanizing/alignment), shut-off valves, maintenance/repair/replacement of rotating scum collectors and associated mechanisms. Non-overhaul repairs shall be reimbursed in accordance with the unit prices under Fees and Costs (Exhibit-F), and performed in accordance with Section 13.0, "Additional Services."

5.0 RESPONSE TIME:

5.1 Contractor shall be accessible to the City by telephone during normal business hours (7:00 a.m.

to 4:00 p.m., Monday through Friday). Contractor shall be ready to start work on any unit within 24 hours of receiving the call for service. Contractor shall provide the City with a 24-hour emergency contact number.

5.2 Contractor shall be available and accessible to the City by telephone to work overtime, if requested by the UDR and/or CTR.

5.3 Contractor shall be available and accessible to the City by telephone to work on an emergency basis (holidays included). if requested by the UDR and/or CTR.

5.4 Contractor shall start an emergency job immediately, without scheduling delays, and shall not be restricted to normal working hours. The UDR and/or CTR shall coordinate the emergency and overtime work.

6.0 REPAIR TECHNICIANS:

6.1 The repair technicians of the Contractor shall be qualified, properly trained in repair and reconditioning of clarifiers of the type and sizes specified in the Agreement.

6.2 The repair technicians of the Contractor shall have a minimum of three (3) years' experience in repair and reconditioning of clarifiers of the sizes specified in the Agreement.

6.3 The Contractor shall furnish resumes of technicians to the City's inspection team during their visit to the Contractor's facility.

6.4 These requirements shall apply to all subcontractors working for the Contractor.

6.5 It shall be the responsibility of the Contractor to conduct security screening on all technicians, employees, and designated agents that may require access to the drinking water facilities. The

Contractor shall provide the Houston Public Works Security Management Section with a roster of these employees, including each employee's full name, picture, and driver's license number. Rosters shall be sent to Ms. Shandra Jones (Shandra.Jones@houstontx.gov) for clearance and access to the facilities.

Any changes to the roster shall be forwarded to Houston Public Works Security Management Section immediately upon change. Technicians, employees, and/or designated agents not listed on the approved roster shall not be allowed entry into any of the facilities. Failure to adhere to these security requirements shall be cause for termination of the Agreement.

7.0 ACCEPTANCE OF REPAIR:

7.1 The UDR shall inspect the repaired unit before the run test can begin. It shall be the Contractor's responsibility to ensure that communication has been established with the UDR for witnessing the performance test.

7.2 Vibration measurements shall be taken on the completely assembled unit at the DE and ODE, horizontal, axial, and vertical directions on the bearing housings adjacent to the shaft. The measurements shall be performed and recorded for the prime mover, as well as the gearboxes.

7.3 Vibration measurements shall be expressed as velocity, unfiltered, and recorded on the Repair Data and Final Test Sheets within an acceptable maximum vibration level, as specified by the OEM.

7.4 After the unit is run continuously for at least four (4) hours with no load, Contractor shall measure/record the vibration at the same spots as was at the beginning of the test run, and within acceptable maximum vibration levels as specified by the OEM.

7.5 The test run shall be a continuous run of at least (24) hours with load (filled) and without load for a minimum of three (3) cycles. Contractor shall measure/record the vibration at the same spots as at the beginning of the test run, and with acceptable maximum vibration levels as specified by the OEM.

7.6 If deficiencies are detected, the repair work shall be rejected, and the Contractor shall make the necessary repairs, adjustments or replacements.

7.7 After corrective actions are made, the unit shall go through a new test run before the clarifier unit is accepted. Testing shall document clarifier torque readings and verify that torque trips are working.

7.8 The Repair Record and Report Covering Teardown Report, photographs of the condition of the clarifier unit, specific measurements, and tests such as balancing of rotating elements, vibration measurements, mechanical measurements and others shall be kept for three (3) years by the Contractor, and shall be furnished to the City if requested by UDR and/or CTR. The Contractor shall provide the City with a monthly Progress and Status Report (Exhibit B-5).

7.9 The City shall not make any payment to the Contractor until all corrective actions are made, and that all equipment repair is accepted.

7.10 The weir leveling shall be accomplished to equalize the overflow from this clarifier, as well as all the other clarifiers which are in service, to prevent a short-circuiting of the clarification process.

8.0 SILENCE OF SPECIFICATIONS:

8.1 The apparent silence of these specifications as to any detail, or apparent omission from it of a detailed description concerning any point, shall be regarded as meaning that only the best commercial practice is to prevail and that only material and workmanship of the finest quality are to be used. All interpretations of these specifications shall be made on the basis of this statement.

9.0 LABOR RATE:

9.1 The labor rate shall include all costs associated with the qualified person to work on and repair City equipment, including wages paid, all company benefits, transportation, and company profits. The Contractor shall not charge for travel time to and from the jobsite.

10.0 PREVENTIVE AND PREDICTIVE MAINTENANCE:

10.1 The Preventive Maintenance (PM) and Predictive Maintenance (PdM) programs shall be performed on all clarifier units in each group monthly, quarterly, or annually. Contractor shall complete all Preventative/Predictive Maintenance tasks according to the manufacturer's O&M manuals with the exception of the frequencies defined in Sections 10.1.1 and 10.1.2. The service interval shall be determined by the Houston Public Works Director or his/her designee as outlined in the scope of work, or by OEM requirements.

10.1.1 Drinking Water Clarifier Units: PM and PdM programs shall be performed on all drinking water clarifier units in each group annually. PM and PdM shall be performed concurrently on each piece of equipment. However, there shall be a one-year interval between PM and/or PdM programs.

10.1.2 Wastewater Clarifier Units: PM shall be performed on all wastewater clarifier units in each group, at a minimum annually. PdM Programs shall be performed on all wastewater clarifier units in each group, at a minimum annually. PM and PdM can be performed concurrently.

10.1.3 Contractor shall furnish all supervision, labor, parts, tools, materials, equipment, supplies, and lubricants (oil or grease) necessary to complete required preventive and predictive maintenance tasks.

10.1.4 Contractor shall only use manufacturer recommended or City approved equal lubricant (oil or grease), which shall be being utilized by the City at the time the PM/PdM is being performed.

10.2 All PM and PdM services involving shutdown of equipment shall be approved by UDR or CTR and be coordinated with the supervisor of the facility. Contractor shall submit a request for shutdown two (2) weeks prior to the shutdown. Granting of a shutdown is subject to operations' conditions at the time.

10.3 Contractor shall complete any scheduled PM, PdM, inspection service of any equipment, and return such unit to operations, notwithstanding the expiration of the defined business hours and/or other conditions unless authorized, in writing, by UDR or CTR.

10.4 Contractor shall have access to the facilities described herein and to the storage areas designated by facility supervisors. Access to the facilities shall be limited to 7:30 a.m. to 4:00 p.m., Monday through Friday, except as required or allowed by the UDR/CTR and the supervisors' facilities.

10.5 Contractor shall perform scheduled and unscheduled corrective,…