ESBD_526708_1781288326999_Bid NO. 26-28 Autumn Road Half A Million Gallon Ground Storage Tank Restoration.pdf

Huntsville CITY OF s

INVITATION TO BID NO. 26-28

“AUTUMN ROAD ½ MILLION GALLON GROUND STORAGE TANK

RESTORATION”

For a printable version please visit our website at City of Huntsville/Government/Finance/Purchasing/BIDS & RFPS

POINT OF CONTACT

Email: Purchasing@huntsvilletx.gov

The Vendor’s signature is required for acceptance of this solicitation and confirms the Vendor has read and understands all requirements concerning this solicitation, the undersigned affirms they are duly authorized to execute the contract. The City of Huntsville is not responsible for solicitations received after the submission deadline for any reason and will be considered void and unacceptable. Hand delivered or mailed offers must be SEALED in an envelope, CLEARLY marked with Bid NO.

26-28 Autumn Road 1/2 Million Gallon Ground Storage Tank Restoration.

CERTIFICATION OF OFFER

Company Name ___________________________________________________________________ Date: _______________________

Signed By: ______________________________________________________Title: _________________________________________

Typed/Printed Name: ________________________________________________________ Phone#: ___________________________

Mailing Address: ___________________________________________________________ Tax ID Number: _____________________ Street/P. O. Box City State Zip

Email: ________________________________________________________________________ SAM ID: _______________________

INITIAL FOR ADDENDUM RECEIPT/ACKNOWLEDGMENT. PLEASE MARK N/A IF NOT ISSUED.

Addendum #1 ____________ Addendum #2 __________ Addendum #3 ____________ Addendum #4 ____________

Sealed solicitations shall be received no later than:

2:00P.M., Central Time July 14, 2026

MARK ENVELOPE: “Solicitation Packet 26-28”

RETURN SEALED:

City of Huntsville

City Secretary c/o Purchasing Department

448 State Highway 75 North Huntsville, Texas 77320 https://www.huntsvilletx.gov/Bids.aspx

TENTATIVE SCHEDULE OF EVENTS

The anticipated schedule for this solicitation is as follows. The City reserves the right to modify these dates as necessary.

June 12, 2026 – Release Solicitation June 17 and June 20, 2026 - Legal Advertisement June 24, 2026 – Mandatory Site Visit June 26, 2026 – Questions Due to the Procurement Manager July 1, 2026 – Final Addendum Posted July 14, 2026 at 2:00 P.M. – Public Opening August 2026 – Award Preparation

GENERAL INSTRUCTIONS

Submissions must be in a sealed envelope clearly marked “Bid NO. 26-28 Autumn Road 1/2 Million Gallon Ground Storage Tank Restoration” It is the sole responsibility of the Vendor to ensure the packet is received at the designated location before the deadline.

A public reading of all timely responses will be held at the submission deadline at the City of Huntsville Service Center, 448 State Highway 75 North, Huntsville, Texas. All interested parties are invited to attend.

All questions concerning this solicitation should be directed to the Purchasing Department via email at purchasing@huntsvilletx.gov.

RESPONSES

Vendors submitting a response do so entirely at their expense. The City has no expressed or implied obligation to reimburse any individual or firm for any costs incurred in preparing or submitting a solicitation, providing additional information when requested, or participating in any selection interviews.

QUALIFICATIONS OF RESPONDENTS

No prequalification of respondents is required. Before award of any contract can be approved, however, the City shall be satisfied that the respondent involved: (1) maintains a permanent place of business, (2) has adequate personnel and equipment to do the work properly and expeditiously, (3) has a suitable financial status to meet obligations incident to the work, (4) has appropriate technical experience, and (5) can submit a satisfactory performance record. The City of Huntsville has the final and sole decision to determine qualifications.

ADDENDAS

No interpretation of the meaning of the specifications of the solicitation will be made to any Vendor orally. Every question or request for interpretation concerning this solicitation shall be directed to the Purchasing Department, in writing via e-mail at purchasing@huntsvilletx.gov. All questions or requests for interpretation concerning the solicitation received after June 26, 2026 @ 10:00 A.M will be considered void and unacceptable.

A written addendum will be issued as a response and will be posted on or before July 1, 2026 @ 5:00 P.M. on the City of Huntsville website, Public Purchase website, and Electronic State Business Daily website. All addenda so issued shall become part of the contract documents, and receipt thereof shall be acknowledged in the space provided in this solicitation. It is the responsibility of the Vendor to verify all addenda and interpretations.

SOLICITATION TABULATIONS

Solicitation tabulation results are posted on our website at: http://www.huntsvilletx.gov/business/bids_and_RFQs/bid_tabulations/ mailto:purchasing@huntsvilletx.gov mailto:purchasing@huntsvilletx.gov http://www.huntsvilletx.gov/business/bids_and_rfps/bid_tabulations/

OBJECTIVE

The objective of this solicitation is to restore the ground storage tank at 3391 Autumn Rd Huntsville, Texas. Rather than focusing solely on the lowest price, the evaluation considers factors like product durability, vendor performance, availability, and delivery, ensuring long-term efficiency, reduced downtime, and overall value for the organization.

TERM OF CONTRACT

This contract shall be effective from the date of award and will expire in sixty (90) calendar days unless otherwise noted in the Notice of Award.

SELECTION AND AWARD

The City will award based on best value* meeting the requirements for this service. The City reserves the right to award the most responsible and responsive bidder in the best interest of the City. If the awarded responder is unable to meet the requirements of the City, services/products may be purchased from the next best available responder and continue until a responder is found that can complete the requirements of the City. If the responder desires the City to consider an all or none response, it must be stated on the price table. The City of Huntsville may award multiple responders meeting the minimum requirements outlined in this solicitation.

The City reserves the right to reject the solicitation of any Vendor who is in violation of any City Ordinance. The City may choose to negotiate a settlement of the ordinance violation as a condition of the solicitation award.

SCOPE OF WORK

1.00 COATING AND LINING OF POTABLE WATER STORAGE TANKS

1.01 General

• This specification shall provide for the surface preparation and coating and lining of the interior and exterior surfaces of a potable water storage tank.

• All surfaces of the tank(s) and all associated piping, equipment, and supports are to be coated excluding aluminum, nickel, copper, bronze, chromium, previously uncoated galvanized, stainless steel, rubber and fiberglass.

• This specification will constitute the minimum requirements. No changes or modifications will be permitted unless prior written approval is obtained from the Purchasing Department issues a Change Order. If there are any conflicts between this document and any referenced standards, this document takes precedence.

• The Vendor will be required to submit a quality control/quality assurance plan to demonstrate compliance with the minimum requirements of this specification. The plan should provide for sufficient testing and observations needed for warranty of the coating system.

• Vendor must provide all necessary manpower, supervision, materials, application, inspection, equipment, dehumidification and ventilation, lighting, proper electrical grounding of equipment, shrouding, containment and access to successfully and safely complete the job requirements.

• Vendor shall comply with all rules and requirements of the TCEQ. Specifically, control of air pollution and visible emissions from particulate matter are to be done in accordance with Title 30, Texas Commission on Environmental Quality, Texas Air Control Board Chapter III, Control of Air Pollution from Visible Emissions and Particulate Matter Abrasive Blasting of Water Storage Tanks Performed by Portable Operations, 30 TAC 111.131 through 139.

• The Vendor shall comply with the Department of Labor Safety and Health Regulations for construction, promulgated under the Occupational Safety and Health Act of 1970 (PL 91-596) and under section 107 of the Contract Work Hours and Safety Standards Act (PL 91-54), and updated laws and acts. Compliance with OSHA Standards per 29 CFR 1926 and 29 CFR 1910 is to be enforced by the VENDOR.

• Requirements for handling, testing and disposal of all generated hazardous and non-hazardous waste shall be in accordance with SSPC-PA Guide 3 and Coating Manufacturer’s Material Safety Data Sheet.

• 3rd Party Inspectors, Engineer, Material Suppliers and representatives of Federal, State and local agencies, directly or indirectly involved with the project, shall have access to the work, whatever it is, in preparation or progress, and the Vendor shall provide proper facilities for such access and inspection.

• The scope of work addresses possible lead conditions and other regulated contaminants. The Vendor will be required to contain and dispose of waste materials in accordance with all applicable federal, state, and local regulations and the requirements of this specification. The Vendor shall not be entitled to additional compensation for efforts necessary to contain and dispose of waste as identified in the scope of work.

• The inspection report included in this document must be properly and completely filled out daily by an on-site Vendor employee or approved representative and submitted to the paint supplier and the City on a weekly basis. A current NACE Level I Inspector Certification is not required by the Vendor.

• Vendor to provide daily site clean-up.

• Vendor to provide for repairs to tank and appurtenances and/or other structures on the site as described in the scope of work.

• The Vendor is to provide adequate explosion proof lighting, for a “shadow free” environment.

• Upon final acceptance for all coating and linings work, and proper cure, the Vendor must disinfect the interior of the tanks, with a City approved method.

• Standards

1. SSPC–SP-1 Solvent Cleaning

2. SSPC-SP-10 Near White Blast Cleaning

3. SSPC-SP-6 Commercial Blast Cleaning

4. SSPC-SP7/NACE 4 Brush-Off Blast Cleaning

5. SSPC-SP11 Power Tool Cleaning

6. SSPC-WJ-4/NACE WJ-4 Pressure Washing

7. SSPC-PA2 Measurement of Dry Paint Thickness with Magnetic Gages

8. SSPC Technology Guide NO. 12 Guide for Illumination of Industrial Painting Projects

9. SSPC TECHNOLOGY GUIDE NO. 6 Guide for Containing Surface Preparation Debris Generated During

Paint Removal Operations

10. SSPC TECHNOLOGY GUIDE NO. 7 Guide to the Disposal of Lead-Contaminated Surface Preparation

Debris

11. SSPC TECHNOLOGY GUIDE NO. 15 Field Methods for Retrieval and Analysis of Soluble Salts on Steel and Other Nonporous Substrates

12. SSPC Paint Application Guide No. 11 Protecting Edges, Crevices, and Irregular Steel Surfaces by Stripe

Coating

13. NACE RP0188-99 Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

14. NACE RP0287-02 Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surfaces Using a Replica Tape

15. ASTM D4285 Standard Test Method for Indicating Oil or Water in Compressed Air

16. NACE RP0288-04 Inspection of Linings on Steel and Concrete

17. SSPC Qualification Procedure No. 1 Standard Procedure for Evaluating the Qualifications of

Industrial/Marine Painting Vendors (Field Application to Complex Industrial and Marine Steel Structures)

18. SSPC Qualification Procedure NO. 2 Standard for Evaluating Painting Vendors

19. (Removal of Hazardous Coatings from Industrial/Marine Steel Structures)

20. SSPC AB 1, AB 2, and AB 3 Abrasives

21. SSPC – VIS 1 Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast cleaning

22. SSPC-PA Guide 3 A Guide to Safety in Paint Applications

23. NACE Publication 6A192 Dehumidification Equipment in Lining Application

24. NSF International Standard 61 Drinking Water System Components

1.02 Submittals

The awarded Vendor must submit a detailed plan for implementation and execution for this project, before beginning work.

• The overall plan ensures that all applicable safety processes are in place at all times.

• A list of the equipment necessary to complete this project, along with verification that all equipment is in proper safe working condition, before moving on site. Equipment shall have properly functioning regulators and pressure gauges.

• A plan to be submitted jointly with supplier, detailing on-going quality control processes to meet specifications for the surface preparation and application of all coatings.

• The latest PDS & MSDS sheets of all paint, solvent, and blasting materials must be submitted to the City and be on site.

• A detailed plan to provide continuous ventilation and dehumidification for the internal tank lining, with a maximum of 50% relative humidity, from the start of surface preparation through final lining cure. Include Supplier’s specific ventilation requirements for products used on interior surfaces. Ventilation requirements shall be provided to ensure adequate evacuation of solvents to prevent solvent entrapment, worker exposure to solvents above the OSHA PEL and provide for timely coating system cure. Equipment capacity must be sized and stated per NACE Publication 6A192.

• The type of abrasive to be used, and that it is capable of generating the specified blast profile and type, minimize worker exposure and applicable quality control testing.

• A detailed plan for monitoring including soil and air protection measures and worker protection, including name of laboratory for testing and monitoring, training and certification of workers and the Vendor’s competent person.

• A detailed plan for the proper removal, handling and disposal of any lead based coatings or linings.

• Confirmation that Vendor has obtained all permits necessary to complete the surface preparation and coatings work designated for this project, including removal, handling and disposal of used abrasive, hazardous and/or toxic waste materials. For blasting and painting water storage tanks, the Vendor shall perform work in compliance with Title 30., Texas Commission on Environmental Quality, Texas Air Control Board Chapter III., Control of Air Pollution from Visible Emissions and Particulate Matter Abrasive Blasting of Water Storage Tanks Performed by Portable Operations, 30 TAC 111.131 through 139, latest revisions.

• A detailed plan to protect the surrounding area, including but not limited to, persons, property, vehicular traffic, any area rotating equipment, gauges, and the drainage systems from over-blast, contaminants, spent abrasives and paint overspray, and provisions for repair of damage in a timely manner, in the submittal.

• Supplier’s statement of conformance with ANSI/NSF 61 (NSF International) requirements for use on potable water tank interior surfaces.

1.03 Preparation

• Provide for repairs to tank structural elements and appurtenances as described in the scope of work.

• Provide for pretesting as specified in the scope of work.

1.04 Containment

• The Vendor shall provide a containment system which allows for the containment of the environmentally sensitive waste, dust and paint over spray that will be generated during the blasting and paint operations.

• When a tank is to be rehabilitated and the coatings to be removed contain lead, containment shall at a minimum conform to the requirements of TCEQ Texas Air Control Board Regulation I, 30 TAC Chapter 111 Sections 131 through 139 and meet the performance requirements of SSPC Guide 7 – Guide for the Disposal of Lead- Contaminated Surface Preparation Debris. Vendor to provide for competent person on-site at all times during lead abatement operations. The competent person shall have training and knowledge to recognize problems and the authority to halt operations until the problem is corrected. Vendor to provide for monitoring for worker exposure in conformance with OSHA requirements. Vendor to provide for ambient monitoring as specified by Method D – EPA Ambient Monitoring for Toxic Metals. Vendor to determine the Adjusted Daily Allowance, based on his work schedule, and provide to the City. Three samplers shall be provided, generally placed upwind, downwind and near entry of containment. Final placement shall be determined in the field based on site conditions.

• If the Vendor elects to wet abrasive blast or vacuum abrasive blast, and roller apply or brush-on coatings, the containment system requirements, if any, shall be submitted to the City. However, impervious ground coverage shall be used at all times.

• Containment system proposed by the Vendor must assure the protection of the surrounding environment and must provide sufficient protection to meet: TCEQ Texas Air Control Board regulations for the Control of Air Pollution and Visible Emissions of Particulate Matter; Texas Water Commission regulations applicable to protection of the soil and water; and SSPC-PA Guide 3 and SSPC Guide 6.

• Construct containment system with wind screens of a minimal shade factor as specified in the Submittal, or as required below, with no emission from edges, rips, or tears. The containment system must be designed for the purpose of containing and controlling emissions, debris and protecting the air, ground and soil from contaminants resulting from lead paint removal, surface preparation and painting operations.

• The containment system shall provide a safe working environment and provide for control of emissions as required in SSPC-PA Guide 3.

• For rehabilitating an existing tank, a Containment System meeting the requirements of an SSPC Class 2 containment, per SSPC Guide 6 (CON), shall be employed when lead containing paint is to be removed by abrasive blast cleaning methods.

• The containment materials must provide for performance which will comply with the following:

• Protection of the environment, including air, water and soil, from abrasive blast media, process water, dust particles and paint debris.

• Air movement within containment.

• Secure edges and seams.

• Permeable to natural lighting, unless alternate lighting is to be provided.

• Tarp overlap to provide for maximum containment of spent debris.

• The containment system shall be maintained free of defects through the course of the project. In the event that emissions or releases occur which exceed the requirements established in SSPC-PA Guide 3, work shall be stopped until all defects are repaired.

• Prior to installation the containment system design must be submitted and reviewed by the City. In addition, for work on water storage tanks, the containment enclosure shall be designed to be raised and lowered within 15 minutes to prevent damage to the enclosure, the tank, personnel, and excessive loading to the tank and tank appurtenances in the event of high winds and foul weather. Provide limits for use of containment (wind speed, rain, etc.).

• Membranes that are impervious to the abrasive blast media, paint debris dusts, and process water shall be placed on the ground around the tank to prevent contamination of the ground storm waters and surface waters due to run-off. The debris must be contained within 30 feet of the base of the tank.

• Prior to any changes or modifications in the containment system during the course of the work, proposed changes and modifications must be submitted in writing and reviewed by the City. The submittal shall address the operational and technical reasons for containment modifications.

1.05 Environmental Requirements for Application

• Tank Interior - Humidity and Temperature

1. During abrasive blast cleaning and painting operations, the relative humidity of the interior air shall not exceed fifty percent (50%). Relative humidity shall be measured by a sling psychrometer or other appropriate psychometric measuring equipment.

2. The interior air temperature and temperature of surfaces to be coated shall be between 50_F and 120_F and at least 5_F above the dew point or as otherwise required by the manufacturer.

3. The Vendor shall achieve the required conditions for interior air conditions through the use of dehumidification equipment.

4. Proposed dehumidification equipment must be submitted for review by the City. Provide a minimum of three air changes per hour unless dehumidification equipment manufacturer's calculations substantiate fewer air changes.

5. The dehumidification equipment shall supply dry, fresh (not recirculated) air within 12 inches of the tank bottom from a system of duct work and blowers. This ventilation system shall operate 24 hrs/day throughout the entire coating cure process.

6. Dehumidification shall be maintained until abrasive cleaning operations, coating operations and cure are complete, but not less than ten (10) days.

7. Dehumidifying equipment will not be required if atmospheric conditions allow the Vendor to comply with the temperature and humidity requirements and coating manufacturer’s specifications.

• Tank Exterior - Humidity and Temperature

1. No coating shall be applied to wet or damp surfaces, or in rain, snow, fog or mist.

2. No coatings shall be applied when it is expected that the ambient air temperature will fall below 50ºF or within 5ºF of the dew point within 6 hours after application of coatings or paints.

3. No coating shall be applied when the relative humidity is exceeded as specified in the coating manufacturer's product data sheet. Relative humidity and dew point shall be measured by use of a Sling Psychrometer in conjunction with US. Department of Commerce Weather Bureau Psychometric Tables. If the above conditions are exceeded, coating or painting operations shall be delayed until conditions are favorable.

4. The ambient conditions and surface temperature of the surfaces being coated must be between 50ºF and 120ºF. The surface temperature shall be at least 5ºF above the dew point or within the manufacturer’s recommendations. During application of urethane coatings the maximum surface temperature shall be 100ºF.

1.06 Surface Preparation

• Abrasive blast products to be used on this project shall conform to the Society for Protective Coatings (SSPC)

Abrasive Specification No. 1. "Mineral and Slag Abrasives", except that copper slag will not be permitted. Abrasive blast product submittals shall include, but not be limited to, the following:

1. Manufacturer's certification or laboratory analysis that the product proposed contains less than 1% Free crystalline silica.

2. Laboratory analysis of blast material presenting results of blast material testing as required in SSPC-AB 1, Table 1 requirements for Chemical and Physical Properties of Abrasives, except that the conductivity test for water soluble contaminants in accordance with ASTM D-4940 shall not exceed 500 microsiemens (micromhos).

3. Material Safety Data Sheets.

4. Composition, mesh size, and bulk density.

5. Estimated quantities of each product required to complete the project and recommended application nozzle, air requirements, and pressure. Compressors shall be capable of providing a minimum of 90 psi at the blast nozzle(s) and shall provide clean air that is free of moisture and oil through oil and moisture traps. Water blast abrasive units shall be capable of 200 CFM at the blast nozzle(s) and shall provide a thoroughly mixed spray.

• Check for contaminants in the compressed air supply prior to blasting, per ASTM D4285-83 (reapproved 2006).

• Prior to all blasting, all visible contaminants must be removed and meet the standards defined in SSPC- SP1.

• Internal Systems - Steel Blasting

1. Carbon steel surfaces shall be prepared to a minimum near-white metal surface cleanliness in accordance with SSPC-SP10/NACE #2, An angular profile of 2.0 to 3.0 mils as per ASTM D 4417, Method C or NACE Standard RP0287 is required

2. A Near White Blast cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, mill scale, paint, oxides, corrosion products, and other foreign matter, except for staining. Staining shall be limited to no more than 5 percent of each square inch of surface area and may consist of light shadows, slight streaks, or minor discolorations caused by stains of rust, stains of mill scale, or stains of previously applied paints.

3. Pitted areas on the tank interior shall be repaired by either filling with Tnemec Series 215 Surfacing Epoxy or Tnemec Series FC22 Epoxoline (floor) or by welding. Epoxy filler shall be feathered smooth. Filler shall be applied after the primer but prior to the application of the finish coat. No protrusions or spatter will be allowed.

Pits deeper than 1/8” shall be filled by welding. Pits repaired by epoxy shall be subsidiary to liner. Pits repaired by welding shall be confirmed by the City and paid as part of the labor indicated in price chart.

• External Systems - Steel Blasting

1. Carbon steel surfaces shall be prepared to a minimum of SSPC-SP6/NACE #3, the An angular profile of 1.5 to

2.5 mils as per ASTM D 4417, Method C or NACE Standard RP0287 is required

2. A Commercial Blast cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, mill scale, paint, oxides, corrosion products, and other foreign matter, except for staining. Staining shall be limited to no more

i. than 33 percent of each square inch of surface area and may consist of light shadows, slight streaks, or minor discolorations caused by stains of rust, stains of mill scale, or stains of previously applied paints.

• All surface defects revealed by the blast cleaning process, shall be ground, filled, or treated in the appropriate manner.

• Welds must be ground to a smooth, rounded shape, removing all buckshot, bb’s, imperfections and sharp edges.

• Check the blast profile per NACE RP0287-2002, and re-prep as necessary to meet the requirements.

• Check for soluble salts and contamination (with Vendor selected product), per SSPC Technology Guide 15, and repeat surface preparation steps as necessary to meet International Paint materials requirements.

• SSPC-SP7/NACE 4 – Brush-Off Blast Cleaning

1. Brush-off blast cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, loose mill scale, loose rust, and loose coating.

2. Tightly adherent mill scale, rust, and coating may remain on the surface. Mill scale, rust, and coating are considered tightly adherent if they cannont be lifted with a dull putty knife.

• SSPC-SP11 - Power Tool Cleaning

1. Power tool cleaning to produce a bare metal surface and retain or project a profile.

2. Metallic surfaces, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, mill scale, rust, paint, oxide, corrosion products, and other foreign matter.

3. Slight residues of rust and paint may be left in the bottom of pits if the original surface is pitted.

• SSPC-WJ-4/NACE WJ-4 – Water Jetting

1. Pressure wash all surfaces to be coated using a solution of hot water and detergent with a minimum of

4,000 psi and a minimum flow rate of 3.0 gallons per minute with a zero-degree rotating nozzle to remove all oil, grease, chalk, dust, dirt and other contaminants.

2. For mildewed surfaces, add chlorine bleach and allow solution to dry on the surface. Rinse all surfaces with clean water. Clean all failed and rusting areas as per SSPC-SP3 Power Tool Cleaning, taking care to not burnish the surface. Feather all edges smooth. Spot prime with Tnemec Series 118 Uni-Bond Mastic applied at 6.0 to 8.0 dry mils.

• The prepared surfaces must meet the standards listed above during application of the coatings and linings.

1.07 Coating and Linings

Follow the latest technical data from the coating supplier’s for mixing and thinning procedures, application limits, application procedures, recoat times, and curing schedules.

• High-pressure water wash as necessary to eliminate any contamination between coating’s applications.

• Properly store and handle materials according to manufacturer's requirements and in compliance with applicable government regulations.

• All subsequent coats, including stripe coat, must be of different color. Finish coat color shall be as selected by the Owner.

• NOTE: All interior coating products subject to contact with potable water shall meet the requirements of the National Sanitation Foundation (NSF) Standard 61 and shall be applied in strict conformance with the manufacturer's recommendations.

The following paint system is required. The Vendor shall verify that the paint system used complies with said NSF Standard 61.

Steel Interior Surface Areas after Sand Blasting This system shall consist of:

* Stripe Coat shall be brush and roll applied and must fill all crevices, non-uniform areas, weld seams, and cover all edges.

Total Min. DFT = 13.0 dry mils

Steel Interior Surface Areas after Brush Blasting

Total Min. DFT = 8.0 dry mils

Steel Exterior Surface Areas after Sandblasting

Total Min. DFT = 6.5 dry mils

Steel Exterior Surface Areas after Power Jetting

Total Min. DFT = 8.0 dry mils

• Application Requirements

1. Primer coat: Apply by brush and roller or spray to a WFT sufficient after curing to result in a DFT as specified above. Color to contrast intermediate coat, but of same family. Apply intermediate coat after overnight cure or as recommended by paint manufacturer.

2. Intermediate coat: Apply by brush and roller or spray to a WFT sufficient after curing to result in a DFT as specified above. Color to contrast primer and finish, but of same family.

3. Finish coat: Apply by brush and roller or spray to a WFT sufficient after curing to result in a DFT as specified above. Color as selected by owner.

4. Total DFT of outside coating shall be summation of layer DFT coating requirements.

5. Intermediate coat must be top coated within 8 days.

6. Tinting may be necessary to assist in application and inspection of the second and third coats. Tinting is permissible provided the tinting material is furnished by the paint manufacturer and mixed in strict accordance with the manufacturers' recommendation.

7. Imperfections or any blushing shall be repaired as directed by the City at the Vendor's expense.

• Painting Materials

The following manufacturers may supply paint for each of the systems described in this specification, pending final paint system approval:

1. TNEMEC Protective Coatings.

2. “Approved Equal” Manufacturer - as approved by City.

• The Vendor is responsible for selecting a particular paint that will comply with all of the requirements of this technical specification. Reference standards are provided and final acceptability of paint systems will be through the submittal process.

• Painting materials are to be supplied in accordance with AWWA D-102-78 Standard outlining: Containers, labels and product information.

• The Vendor must submit with his solicitation the manufacturer's product number he has selected for each of the painting systems. It is not permissible to use different manufacturers within any one system.

• The Vendor must use and may be requested to furnish written certification by the Owner, only paints and materials for all interior surfaces that conform to U.S.D.A., EPA, and/or F.D.A. regulations for potable water service.

• The paints and materials selected for the entire tank must also conform to all air pollution control agencies requirements. This not only includes present application but also future removal of the materials. Owner may require written certification by the manufacturer that these selected materials do meet these regulatory requirements.

• NSF /ANSI Std. 61 Approved Flexible Caulking: Caulking shall be flexible, and NSF approved for use in contact with potable water and compatible with the epoxy lining system used in the tank. Apply Sika-Flex 1A, or equal, to all joints that are not seal welded after the coatings have been applied and properly cured.

1.08 Quality Control Plan

• Inspection/Hold Points

1. The Vendor’s QC inspector shall measure environmental conditions prior to starting all applications.

Environmental conditions must be measured and recorded a minimum of twice daily. Application condition limits shall be in accordance with the manufacturer’s specifications.

2. All test results (abrasives, chlorides, blast profile, wet film thickness, dry film thickness, etc.) must be included in the Daily Inspection Reports.

3. Vendor must perform continuous quality assurance/control during surface preparation, mixing and thinning of coatings materials, and application of coatings.

4. All inspection equipment must be properly calibrated and in good working order.

5. Blast will be verified per SSPC VIS 1.

6. Continuous wet film thickness readings must be taken during all applications.

7. Dry film thickness readings will be confirmed by SSPC PA2.

8. Hold Points are set for the following, with assigned responsibilities:

i. Pre-mobilization equipment check – Vendor

ii. Abrasive quality control checks - Vendor, the City

iii. Blotter test of compressed air prior to blasting – Vendor

iv. Completion of surface preparation (blast, profile, chlorides), before priming. Vendor, the City

v. Mixing/thinning of the first batch of each product – Vendor

vi. Wet film thickness of the initial application of each product – Vendor

vii. Dry film thickness after each coat – Vendor

viii. Final dry film thickness per SSPC - PA-2 – Vendor, the City

ix. Final 100% holiday free inspection, internal lining - Vendor, the City

9. Any surface preparation or applications performed beyond the hold point, without receiving the proper approval, will require re-blasting, and re-application per this specification, at the Vendor’s cost.

10. All coatings applications must be of specified film thickness, properly adhering, and uniform in appearance

– with no visible runs or sags.

11. All internal linings must be 100% inspected per NACE RP0188-2006 after application and proper curing of the finish coat, all repairs made per coating manufacturer’s recommendations, and then re-inspected until it is a holiday free linings application.

• Documentation / Reports

1. The Vendor shall submit a written schedule at the pre-job meeting detailing all work to be performed and the approximate time needed to complete each task. This schedule or timeline will allow all parties to quickly identify deficiencies and target specific corrective actions needed to improve the workflow.

2. The Vendor shall submit a copy of a final report to the City after completion of the project. The final report shall include:

i. A signed copy of the certification (final sign off sheet)

ii. A copy of the accepted written schedule from the pre job meeting.

iii. Copies of all Daily Inspection Reports

1.09 Clean-up and Disposal

Collection and disposal of surface preparation debris shall be in conformance with SSPC-Guide 7. Surface preparation debris shall be separated from other debris generated during the course of the work. Provide for testing to determine hazardous classification of debris per SSPC-Guide 7, Appendix A.

1. Vendor to provide for disposal of hazardous waste generated from the site. Disposal of hazardous waste procedures to include assisting Owner in obtaining identification number and selection of treatment or disposal option. Provide manifest to Owner for his record.

2. Vendor to provide for appropriate off-site disposal of all other wastes generated from the operations.

3. Provide for post testing of soils where required by Special Provision.

4. Provide for repairs and painting of other on-site structures, in addition to tank, as described in the scope of work.

5. Provide for final grading of surface to provide for drainage and seed area.

1.10 Warranty

The Vendor must warranty and guarantee that the paint system will be free of any rust, peeling, flaking, or poor adhesion at the one-year inspection and shall cover all costs for paint materials, application, access, scaffolding, and associated labor.

All repairs will be made per the supplier’s recommendations, with approval from The City.

1.11 Tank Graphics

• No graphics will need to be applied to this tank.

1.12 First Anniversary Inspection

• General: The inside and outside surfaces of the tank will be inspected by representatives of the Owner within the

Vendor's one year warranty period at approximately one year's time after painting work has been completed to determine whether any repair work is necessary.

• Arrangements: The Owner shall establish the date for the inspection and shall notify the Vendor at least 10 days in advance should the Vendor elect to attend the tank inspection. If an inspection date has not been established within 12 months after the date of completion and acceptance by the Owner, then the first anniversary inspection shall be considered to be waived. The Owner shall drain the tank and provide suitable interior lighting and ventilation for the tank inspection.

• Remedial Work: Any location where coats of paint have peeled off, bubbled, or cracked and any location where rusting is evident shall be considered to be a failure of the paint system. The Vendor shall make repairs at all points where failures are observed by removing the deteriorated coating, cleaning and surface, and recoating with the same paint system. If the area of failures exceeds 25 percent of the area of a portion of the tank surface, then that portion the entire paint system shall be removed and repainted. For purposes of determining the need for complete repainting, the inside roof, shell, and floor and the outside roof, shell, and floor shall each be considered separately.

• Inspection Report: The Owner will prepare and deliver to the Vendor an inspection report covering the first anniversary inspection, setting forth the number and type of failures observed, the percentage of the surface area where failure has occurred, and the names of the persons making the inspection. Color photographs illustrating each type of failure shall be included in the report.

2.00 SPECIAL PROVISION TO THE TECHNICAL SPECIFICATIONS (SP-1)

2.01 Scope Of Contract

• The City of Huntsville, Texas has a half million gallon welded steel water storage tank that is to be rehabilitated and re-coated under the terms of this contract.

• Generally, the interior and exterior protective coating systems will be replaced and minor structural repairs will be made. The specific structural repairs and re-coating required are outlined in the following para. 2.02. Work To Be Accomplished.

• Replacement of the exterior coating system requires complete shrouding of the structure to prevent nuisance dust to the surrounding area. The coatings contain less than 0.50% lead and lead abatement is not required.

• It is the responsibility of the Vendor to carefully inspect the site and all pertinent parts and devices on the tank to ascertain the quantity of surface preparation, necessary repairs, and coating required to clean the tank properly, coat, repair, and place it back into operation in accordance with these contract specifications.

• The information on the tank provided in the City's Report of Inspection is general in nature and should not be relied upon to determine quantities or other solicitation factors.

• The Vendor shall use the products of TNEMEC Company, Inc. as outlined in the following para. 2.02. Work To Be Accomplished.

• All substitutions must be approved by the City prior to application. The City has final authority in approval or disapproval of a proposed substitute coating system. The Vendor must submit complete descriptive materials on the products along with current NSF Certification plus full manufacturers recommendations of surface preparation and application to City for consideration.

• All references below to SSPC- SP 1, 2, 3, 6, 7 & 10 refer to surface preparation and cleaning of steel surfaces as defined in Volume 2 Seventh Edition of the Steel Structures Painting Council.

• All references below to PA -1 & 2 refer to good painting practices of steel surfaces as defined in Volume 2 Seventh Edition of the Steel Structures Painting Council.

2.02 Work To Be Accomplished

• Interior Surface Area Preparation & Coating:

1. Abrasive blast clean the entire interior surfaces including the ceiling plate and roof support system to SSPC-SP 10 near-white blast standard to remove all coal-tar epoxy coating system.

2. Remove all blast debris from tank and inspect the interior surface area for pits and soluble salt contamination. Check interior surfaces with a black light and mark areas with soap stone that have residue of coal-tar epoxy remaining.

3. Repair deep pits & pin-holes by welding. Deep pits are defined as any pit greater in depth than 1/8”. Pin-holes are defined as any hole less than 1/8” diameter. Include 250 pits & holes in base solicitation.

4. Check interior steel for ferrous iron salt contamination. If salt content is above 100 ppm, pressure wash per SSPC-SP-1 all blast cleaned areas below high water line with a solution of water and Chlor-Rid in a dilution rate of 1:100 to reduce soluble salt content to less than 100 ppm. Use application rate of one gallon of Clor-Rid per 500 sf of steel surface area.

5. When soluble salt content is below 100 ppm, install specified desiccant dehumidification equipment and blast clean all interior surfaces including ceiling and roof support system per SSPC– SP 10 near-white blast standard with anchor profile of 1.5 to 2.5 mils. Dehumidification equipment must remain operational 24 hours per day until five full days after the final coat of paint has been applied. The unit must control the environment to keep the air inside the tank at less than 50% relative humidity at all times. Minimum desiccant dehumidification equipment required is an HC 9000 GA with 50 KW quiet type generator as supplied by DH Technologies. The DH unit must be powered by propane fuel and the quiet type generator powered by diesel. The Vendor must provide fuel for both the DH unit and the generator.

6. Apply NSF approved three coat systems of zinc rich primer top coated with two coats of polyamide epoxy to entire interior surface areas. Approved products only:

i. Prime coat: Tnemec Series 91-H2O Hydro-Zinc 2000 applied @ 2.5 - 3.5 mils DFT. Thin only with Tnemec thinner 41-2 or 41-3.

ii. Stripe coat: Same product as prime coat but brush into all weld seams and sharp edges.

iii. Intermediate and top coats: Tnemec Series 20 Pota-Pox applied @ 4.0 to 6.0 mils DFT each coat. Thin only with Tnemec thinner 41-4.

iv. Minimum thickness required is 12 mils per SSPC PA 2 dry film thickness inspection standard.

7. Apply 100% solid Tnemec Series 100 Pota-Pox to all shallow pitting. Shallow pitting is defined as all pitting no deeper than 1/8”. Include 1 gallon in solicitation.

8. Chlorinate tank per Procedure No.1 or 2 of TS 10. Owner will refill tank and perform bacteriological testing. Job is not complete until tank passes bacteriological testing as required by Health Dept.

• Exterior Area Surface Preparation & Coating:

No blasting can be performed unless the shroud is completely raised and the top cap is in place. If dust emissions are visible, the blasting operation must cease and corrections must be made to the shroud system. No shroud clips or welded plates may remain on tank when shroud is removed.

1. Abrasive blast clean the entire exterior surface area to SSPC-SP-6 commercial blast standard. A Class 2A containment system per SSPC Guide 6 (CON) must be in place during all exterior blasting and priming.

See Table A in Drawings Section. Use Green Lightning or StarBlast abrasive media to insure minimum dust.

2. Apply three coat epoxy/urethane system per SSPC PA 1&2:

i. Prime coat: Tneme-Zinc 90-97 applied @ 2.5-3.5 mils DFT.

ii. Stripe coat: Tnemec Series 20 or 66 thinned as much as allowable and brushed into all weld seams.

iii. Intermediate coat: Tnemec Series 20 or 66 polyamide epoxy applied @ 4–5 mils DFT.

iv. Top coat: Tnemec Endura-Shield Series 1074 UV polyurethane applied @ 2-3 mils DFT.

v. Total system thickness must be 10.0 mils DFT minimum. Each succeeding coat of paint will vary from the preceding in color so as to be able to verify coverage. Color of finish coat of paint will be determined by City after Vendor submits color choices chart.

3. Provide skid free surface area approx. 8’ radius from dry riser hatch opening on roof by sprinkling clean blast sand on top of wet epoxy intermediate coat. Use approx. 1# of #3 sand per 4 square foot of surface area.

• Repair Items of Work:

1. All repairs in this paragraph must be completed prior to application of any coating.

2. Install new AWWA style interior ladder in tank below top hatch opening to floor of tank. See Detail in

Drawing Section. After all painting is complete, install DBI/SALA galvanize coated cable style safety climb device system with one cable grab.

3. Weld approx. 250 sq. in. of deep pit & pin-hole repair in interior of tank as required and directed by The City (each pit & pinhole = 1 sq. in.). Provide and install one gallon of 100% solids Tnemec Series 100 Pota Pox to repair shallow pits.

2.03 Repair Of Interior Seams Or Pits

After the commercial blast of the tank's interior area, the City will inspect the steel surface to determine the repair procedure.

The repairs may be made by using epoxy or by welding as directed by the City. Those pits deeper than 1/8” will be repaired by welding. Pits less than 1/8" deep will be repaired with epoxy.

2.04 Interior Surface Area Paint System

The work covered by this section of the specification includes painting the entire interior surface area of the tank. The Vendor shall furnish all materials required for the painting and shall install them in accordance with the manufacturer’s written directions and these specifications.

• Three Coat Epoxy System Surface Preparation

1. The surface of the steel will be abrasively cleaned to remove all old paint and any surface contaminants to provide a suitable anchor profile.

2. The tank will be abrasive blast cleaned to SSPC-SP-10 Near-White Blast Standard. After all of the abrasive is removed from the interior, the City will inspect the surface of the steel for pitting damage and soluble salt contamination and coal-tar epoxy residue. All pits will be repaired as specified in para. 4.

above.

3. Soluble salts will be checked with commercially available test kits in at least four spots. If any of the tests indicate levels of salt above 100 ppm, the steel surface will be pressure washed per SSPC -SP 1 with a solution of Chor-Rid to remove or reduce the salt to levels below 100 ppm. This pressure washing will be paid as Additive Item #1.

4. When salt levels are below 100 ppm, check steel with black light to determine if all of the coal-tar epoxy has been removed. Mark areas of coal-tar residue and abrasively clean the entire interior surfaces to near-white SSPC - SP-10 standard.

5. The anchor profile of the steel surface should be a minimum of 1.5 mils and a maximum of 2.5 mils as determined by Test-Tex film strips.

• Three Coat Epoxy System

1. The interior paint system shall be applied in a minimum of three (3) coats. The thickness of the prime coat will be a minimum of 2.5 - 3.5 mils and the intermediate and top coats will be 4.0 - 6.0 mils each for a total system thickness of not less than twelve (12) mils DFT. The lining shall be placed in accordance with the specifications of the manufacturer and the total finish shall be in accordance with the manufacturer’s written directions except the total thickness shall be as herein specified.

• General Provisions for Interior Paint Systems

1. All sharp edges, weld seams, and other items difficult to coat shall receive a brush applied coat of the specified coating (mix of 50% paint, 50% thinner) liberally worked in after abrasive blasting and prior to the first coat of paint.

2. During and after final application of each coating, all metal surfaces shall be checked with appropriate wet and dry mil gauges to insure that the required thickness of coating is being obtained.

3. After the paint thickness meets these specifications and has cured for at least five days, the Vendor shall test the inside surface for holidays with a low voltage wet sponge detector. Holidays shall be marked and reworked until no further holidays appear.

4. Each coat shall be sprayed on in accordance with the manufacturer’s recommendations. Rolling interior paint is not permitted.

2.05 Exterior Surfaces Paint System

• The work covered by this section of the specifications includes painting the entire outside surface area of the tank. It also includes painting any steel outside the tank such as vents, hatches and all other items outside the tank.

• Vendor shall furnish all materials required for the painting and shall install them in accordance with the manufacturer’s written direction and these specifications.

• Exterior Surface Preparation

The entire exterior surface of the structure will be abrasive cleaned to SSPC-SP-6 commercial blast standard. The blasting must be done inside the shroud to prevent dust from escaping and creating a hazard to the nearby residences.

• Three Coat Zinc Rich Primer/Epoxy/Urethane System

1. The exterior paint system shall be applied in a minimum of three (3) coats. The thickness of the prime coat shall be a minimum of 2.5 – 3.5 mils DFT, the intermediate coat a minimum thickness of 4 – 5 mils DFT and the finish coat a minimum thickness of 2 - 3 mils DFT. Total system DFT will be a minimum of ten (10) mils DFT.

2. Each coat shall be sprayed or rolled on in accordance with the manufacturer’s recommendations. The type of spray nozzle, the fluid pressure at the gun, the distance from the gun to the surface being painted and the speed of travel of the gun shall be as recommended by the manufacture. Thinning shall be done as recommended.