Attachment01_StatementOfWork.pdf

1 | P a g e Elevated water storage tank Interior Coating Rehab Sunset Crater National Monument 2022

Statement of Work

Sunset Crater National Monument

Flagstaff Arizona

Rehabilitate Elevated Potable Water Storage Tank

Interior Coating

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Project Contents

1. Work Description

2. Submittals - Submit for Acceptance

3. Paint system Coordination

4. References Standards

5. Definitions

6. Agency Acronyms

7. Source Quality Control

8. Requirements of Regulatory Agencies

9. Pre-Application Meeting

10. Maintain a paint Application Log

11. Product Delivery, Storage, and Handling

12. Storage of Materials:

14. Project Conditions & Environmental Requirements

15. Protection:

16. Products

17. Painting System

18. Substitutions

19. Execution & 3rd Party NACE level 3 Inspector

20. Equipment

21. Surface Preparations & Abrasive Blast Cleaning

22. Inspect Surfaces

23. Materials preparations

24. Application Requirements

25. Prime Coat Application

26. Finish Coat Application:

27. Repairs

28. Field Quality Control

29. Painting Contractors:

30. Curing & Tank Ventilation

31. Disinfection of Water Storage Facility

32. Dechlorination NPS Acceptable Methods/Procedures

33. Adjustment & Clean Up

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34. Warranty Inspection

35. Remedial Work

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1. Work Description

1. The Work includes Sandblasting, Surface Preparation, Priming, Striping, and Field

Coating of interior wet, interior dry surfaces, and interior appurtenances of a 50,000 gallon 100 foot elevated steel potable water storage tank.

2. Sandblasting and Surface preparation will require the removal of two previous coating systems installed. Substrate shall be cleaned to SP 10/NACE No. 2, Near- White Blast Cleaning standard consistent with the manufacturer’s specification for coating system specified.

3. This work will require the installation of a 100% solids coating system shall be certified by NSF International in accordance with NSF/ANSI/CAN Std 61 and meet extraction requirements of NSF/ANSI/CAN 600

4. This Contract Specifies the Use of a Coating manufactured by Tnemec, See section

21. Painting System for Design Specification.

5. This work includes warranty inspection as specified in section 39 below.

i. Any evidence of rust penetration or coating that has peeled off, bubbled, or cracked will be considered a failure of the system.

6. This project will require the use of a NACE level 3 CCI inspector, see section 19

Execution & 3rd party NACE level 3 inspector

7. An independent Arizona state certified laboratory shall be contracted by contractor to perform bacteriological testing of tank before the system can be returned to service.

i. All Documentation and Lab work shall be provided immediately upon reception of results. All Water quality testing is subject to review by Designated NPS personnel, Regional USPHS officials, and contracting official, such officials shall enforce any corrective actions need if results are not satisfactory to state, or federal regulations.

8. The anticipated period of performance for this work is 65 days from date of award.

2. Submittals - Submit for Acceptance

1. Interior coating plan

i. Provide in writing from the coating manufacturers Technical Service Department that the specified coating or lining systems are the correct systems for long-term compatibility, protection, and performance of the environmental exposures such systems will encounter in performance lifetime for potable water storage facilities.

ii. Include mixing instructions, thinning recommendations, percent solids, spread rate, volatile organic compounds (VOC) composition, application instructions, allowable accelerators, application restrictions such as minimum and maximum surface temperatures, dew point and relative humidity limitations, unit weight per gallon, drying time, pot life, and safety precautions.

1. Work Schedule

iii. No onsite work shall start until all required schedules and plans listed in this contract are submitted and accepted by the contracting officer’s representative

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(COR). This shall include but is not limited to any deliveries of equipment or materials to the work site.

iv. Work hours are restricted to 7am - 5Pm, Monday-Friday

v. Weekend and holiday work will require pre-approval by the COR/CO before any authorizations are granted.

vi. Schedule shall include the intended hold points for inspection by 3rd Party NACE inspector for certification and acceptance. See section 19 Execution & 3rd party NACE level 3 inspector for coordination and Inspector criteria.

2. Blasting and Cleaning Plan

vii. This Plan shall include a description of the proposed blasting abrasive, and the means to which employees and other personnel, including park staff, will be kept safe.

viii. The plan shall include how these OSHA requirements will be adhered to. The plan shall also include the Contractor’s means of cleaning up and disposal of the blast abrasive along with the removed interior and exterior coatings and their disposal. The plan shall also specify the Contractor’s means of keeping the site clean and free of debris.

ix. Containment plan showing all details on equipment, tarps, top cover, impervious ground covers, structural loading that the system will impact to the tanks, structural loading calculations, and dust collection equipment.

x. Coating manufacturer's recommendation for universal barrier coat if required.

xi. Coating manufacturer's recommendation for providing temporary or supplemental heat or dehumidification or other environmental control measures.

xii. Provide certification that the coating and/or lining systems proposed for use has been reviewed and approved by Technical Service Representative or equivalent employed by the coating manufacturer.

3. Contractors Safety plan

xiii. Contractor shall perform an exposure assessment and develop and implement a plan that includes appropriate safeguards, personal protective equipment, monitoring, documentation, and recordkeeping. The safety plan shall address the security and protection of the site to restrict access and provide signage for communicating hazards relative to the blasting, surface preparation, and installation of specified coating.

xiv. Contractor’s safety plan shall address how the contractor plans to comply with OSHA standards for removal and lowering of demolished material and fall protection for all staff and subcontractors working on the structure and site. The plan should address the OSHA standards applicable, training and certification of staff and subcontractors to safely carryout the work, the supervision requirements, and all equipment needed and procedures to be followed.

xv. The safety plan should envision possible site emergencies and provide procedures for handling same.

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2. Ventilation Plan

i. Methods and equipment to be used to control temperature and humidity and ensure ventilation so that curing time can be achieved.

ii. Must include intended venting options through the top hatch, two side manways, and one manway located at the bottom of the tank column.

4. Tank disinfection & Dechlorination plan, congruent with AWWA C652-11, AWWA

C655-18

5. Curing Plan and Schedule congruent with the manufactures coating system specifications.

6. Specify the methods and timeliness to be executed for the curing process, this plan shall be consistent with the manufactures published recommendations for each product applied.

7. Product technical data including:

1. Acknowledgement that products submitted meet requirements of standards referenced.

2. Manufacturer's current written application instructions and written coating system repair procedures for submitted coating and/or lining systems.

3. Manufacturer’s current written repair procedure for the submitted coating and/or lining systems.

4. Manufacturer's current surface preparation instructions for submitted coating and/or lining systems.

8. All submittals are subject to review by NPS personnel including but not limited to contracting officer, contracting officer’s representative, utility system operators, and USPHS officials.

3. Paint system Coordination

1. Coordinate primers with finish paint materials to provide primers that are compatible with finish paint materials used. Responsibility for coordinating the compatibility of all shop-primed and field-painted items belongs to the contractor.

2. Furnish information to COR on the characteristics of the finish materials proposed for use to ensure that compatible prime coats are used. Provide barrier coats over incompatible primers or remove and repaint as required. Notify COR, in writing, of anticipated problems using the specified painting systems with surfaces primed by others.

4. References Standards

1. All referenced standards shall be used according to that standard’s most current published form.

2. ASTM International (ASTM)

i. ASTM D 16, Standard Terminology Relating to Paint, Varnish, Lacquer and Related Products

ii. ASTM D 3359 Methods for Measuring Adhesion by Tape Test Method A

iii. ASTM D 3960, Practice for Determining Volatile Organic Compound (VOC)

Content of Paints and Related Coating

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iv. ASTM D 4228 Standard Practice for Qualification of Coating Applicators for Application of Coatings to Steel Surfaces

v. ASTM D 4285, Test Method for Indicating Oil or Water in Compressed Air

vi. 6. ASTM D 4417, Test Methods for Field Measurement of Surface Profile of Blast

Cleaned Steel Methods B or C

vii. 7. ASTM D 6386 Standard Practice for Preparation of Zinc (Hot-Dip Galvanized)

Coated Iron and Steel Product and Hardware Surfaces for Painting

3. American National Standards institute (ANSI/NSF) international (NSF)

i. ANSI/NSF Standard 60: Drinking Water Chemicals - Health Effects

ii. NSF/ANSI/CAN Std. 61: Drinking Water System Components - Health Effects

iii. NSF/ANSI/CAN 600: Extraction Requirements

4. American Water Works Association (AWWA)

i. AWWA C210 Liquid-epoxy Coatings and linings for steel water pipes and fittings

ii. AWWA D 102 Coating Steel Water-Storage Tanks

iii. AWWA C652-11 Disinfection of Water Storage Facilities

iv. ANSI/AWWA C655-18 Field Dechlorination

5. NACE International (NACE)

i. NACE SP0188 (Standard Practice Discontinuity (Holiday) Testing of New

Protective Coatings on Conductive Substrates

ii. NACE Publication 6D-173 A Manual for Painter Safety

6. National Bureau of Standards (NBS)

i. Certified Coating Thickness Calibration Stand

7. The Society for Protective Coatings (SSPC)

i. PA 2, Procedure for Determining Conformance to Dry Coating Thickness

Requirements (Level 3)

ii. SP 1 Solvent Cleaning

iii. SP 2 Hand Tool Cleaning

iv. SP 3 Power Tool Cleaning

v. SSPC Painting Manuel Volume 1 Good Painting Practice Structures

vi. SSPC - Volume 2, Systems and Specifications

vii. SSPC Guide 6 - Containing Debris Generated During Paint Removal Operation 8.

SSPC Guide 11 - Protecting Corners, Edges, Crevices, and Irregular Steel Geometries by Stripe Coating

viii. SSPC Guide 12 Guide for Illumination of Industrial Projects

8. The Society for Protective Coatings/NACE International (SSPC/NACE)

i. SP 10/NACE No. 2, Near-White Blast Cleaning

ii. SP WJ-4/NACE WJ-4 – Light Cleaning

9. National Association of Pipe Fabricators, Inc. NAPF 500-03

i. 500-03-01 Solvent Cleaning

ii. 500-03-02 Hand Tool Cleaning

iii. 500-03 -03 Poor Tool Cleaning

iv. 500-03-04 Abrasive Blast Cleaning for Ductile Iron Pipe

v. 500-03-05 Abrasive Blast Cleaning for Cast Ductile Iron Fittings

10. The International Organization for Standardization (IS0)

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i. ISO 8502-3 Preparation of steel substrates before application of paint and related Products -Tests for the assessment of surface cleanliness - Part 3:

Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)

5. Definitions

1. Definitions: Specific coating terminology and Water System Operation Standards used in this Section shall be in accordance with the definitions in ASTM D 16, ASTM, D 3960, ANSI/AWWA and the following definitions:

2. Water Systems

i. “Potable Water” Water fit for human consumption

ii. “Sample Point” The location of water sampling

iii. “Dechlorination” Highly chlorinated water should be dechlorinated prior to flushing into the sewer, surface water, or ground surface where it could affect surface water or other resources. Field Dechlorination should be conducted in accordance with ANSI/AWWA C655-09 or the latest version.

iv. “Water disinfection” the removal, deactivation or killing of pathogenic microorganisms. Microorganisms are destroyed or deactivated, resulting in termination of growth and reproduction.

3. Coatings/Linings

i. The term "paint" includes pretreatment and all painting system materials, such as primer, emulsion, enamel, organic/inorganic polymer coating, stain sealer and filler, and other applied materials whether used as prime, filler, intermediate or finish coats.

ii. The term “coating” and “lining” as used herein are considered interchangeable and mean coating systems materials, including any applicable resinous primers and finish coats that function to provide protection of steel or concrete substrates.

iii. The terms “coating system” and “lining system” as used herein are considered interchangeable and mean total resurfacing and coating materials combined to function as a total system to provide the designed protection.

iv. Field Coat: The application or the completion of application of the coating system after installation of the surface at the site of the Work.

v. Stripe coat: A coat of paint applied to specified areas such as edges or welds before or after a full coat is applied to the entire surface.

vi. Shop Coat: One or more coats applied in a shop or plant prior to shipment to the site of erection or fabrication, where the field or finishing coat is applied.

vii. Barrier Coat: A physical barrier, i.e. coating, between the substrate and its environment by keeping oxygen, moisture and other chemicals away from the substrate

viii. Volatile Organic Compound (VOC) Content: The portion of the coating that is a compound of carbon, is photochemically reactive, and evaporates during drying or curing, expressed in grams per liter or pounds per gallon.

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ix. Touch-Up Painting: The application of a paint on areas of painted surfaces to repair marks, scratches, and areas where the coating has deteriorated to restore the coating film to an un-broken condition.

x. Painter: Installer or applicator, is the person or persons actually installing or applying the coating and/or lining in the field at the Project site.

xi. The term Independent NACE CCI : The inspection body, and its staff shall not engage in any activities that may conflict with their independence of judgement and integrity in relation to their inspection activities. In particular they shall not become directly involved in the design, manufacture, supply, installation, user or maintenance of the items inspected, or similar competitive items. They are also a person and/or persons (NACE Certified Coating Inspector) that has satisfactorily completed NACE CIP program and is still actively certified by NACE International.

xii. Tank: As defined in this standard, the term tank includes steel standpipes, reservoirs, and elevated tanks.

xiii. Top capacity level (TCL): Elevation of the lip of the overflow

xiv. Exterior surfaces: Exterior surfaces, excluding inaccessible areas, of the tank roof, shell, pedestal, legs, accessories, and appurtenances that are exposed to the elemental atmosphere.

xv. Inaccessible areas: Areas of the finished structure that, by virtue of the configuration of the completed structure, cannot be accessed to perform surface preparation or coating application (with or without the use of scaffolding, rigging, or staging). Inaccessible areas include such areas as the contact surfaces of roof plate lap joints, underside of roof plates where they cross supporting members, top surface of rafters directly supporting roof plates, contact surfaces of bolted connections, underside of column base plates, contact surfaces of mating parts not intended to be removed or disassembled during routine operation or maintenance of the tank, underside of the tank bottom for ground-supported flat-bottom tanks, and inside of the risers and other inflow /outflow appurtenances of less than a nominal 36” in diameter.

xvi. Interior dry surfaces: Interior surfaces of the finished structure, excluding inaccessible areas, that are not exposed to the elemental atmosphere, the stored water, or its vapor. Examples are the interior of the access tube, interior of the pedestal, and underside of a suspended bottom within the pedestal.

xvii. Interior wet surfaces: Interior surfaces, excluding inaccessible areas, of the tank roof, shell, bottom, accessories, and appurtenances that are exposed to the stored water or its vapor. Examples are the interior of the roof, shell, bottom, and exterior of the access tube within the tank.

xviii. Holiday: A void, crack, thin spot, foreign inclusion, or contamination in the coating film that significantly lowers the dielectric strength of the coating. May also be identified as a holiday or pinhole.

xix. Submerged Metal: Steel or iron surfaces below tops of channel or structure walls which will contain water even when above expected water level

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xx. Exposed Surface: Any metal or concrete surface, indoors or outdoors that is exposed to view.

xxi. Dry Film Thickness (DFT): Thickness of fully cured coating, measured in mils (1/1000 inch).

xxii. Ferrous: Cast iron, ductile iron, wrought iron, and all steel alloys except stainless steel

6. Agency Acronyms

i. Contracting Officer (CO)

ii. Contracting Officer Representative (COR)

iii. National Park Service (NPS)

iv. Utility System Operator (USO)

v. Department of the interior (DOI)

vi. United States Public Health Service (USPHS)

vii. Arizona Department of Environmental Quality (ADEQ)

7. Source Quality Control

1. Products not meeting current VOC limits under NSF/ANSI/CAN 600 standard for extractable limits will not be accepted

2. Utilize ASTM D 4228 Standard Practice for Qualification of Coating Applicators for

Application of Coatings to Steel Surfaces.

3. Comply with manufacturer’s recommendations on preventing coating contact with levels of carbon dioxide and carbon monoxide that may cause yellowing during application and initial stages of curing of paint coatings.

4. Obtain each product from only one manufacturer. Multiple manufacturing sources for the same system component will not be accepted by COR/CO.

5. Verify product shelf-life history for each product source for materials manufactured by the same manufacturer but purchased and stored at different locations or obtained from different sources.

6. Constantly store materials to be used in the painting according with the manufacturer’s approved current written recommendations.

7. Any Corrective measures by the contractor, shall be observed by an INDEPENDENT

NACE CCI.

8. Within seven days after corrective action inspection, the INDEPENDENT NACE CCI will provide a written report that the coatings have been applied properly and in accordance with the manufacturer's written recommendations and requirements.

8. Requirements of Regulatory Agencies

1. Surface preparation and application of coatings shall be performed by contractor in compliance with all applicable federal, state, and local occupational safety and health regulations.

2. Obtain and comply with all safety precautions recommended by the paint manufacturer.

3. Painting systems for surfaces in contact with potable water, or water being treated for potable use, shall be NSF/ANSI/CAN std 61 & NSF/ANSI/CAN 600 approved and shall not impart any taste or odor to the water or result in any organic or inorganic

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9. Pre-Application Meeting

1. A pre-application meeting MUST take place via virtual meeting or conference call no more than 2 weeks before the application of any coating or lining work proceeding.

2. Attendance is required of all principal decision-making parties directly affecting work of this section, including General Contractor, Structural Contractor, Engineer, trades Persons of other work in and around the coatings work, Painter, Coating Manufacturer’s Technical Representative, Coating Inspector, Site Safety and Health Supervisor etc.

1. Review Project Coating Specification, Project requirements, including Contract Documents.

2. Review of all submitted contractor’s plans

3. Project Schedule, pending and accepted Change Orders and requests for information that may have been submitted by contractor to COR/CO.

4. Contractor’s responsibilities, i.e., providing written daily reports and review required samples and submittals, both completed and yet to be completed.

5. Review status of surfaces including drying, surface preparations and similar considerations.

6. Review availability of materials, tradesman, equipment, and facilities needed to make progress, avoid delays and protect the work from damaging conditions.

7. Review weather and forecasted weather conditions, and procedures for coping with unfavorable conditions. Supplemental heating sources, as may be required to continue the work under low temperature conditions, shall be in operating order and acceptable to paint applicator

8. Methods to be used for the Disinfection, and Dechlorination of potable water facilities, methods shall be consistent with AWWA C652-11 &

AWWA C655-18

9. Material storage requirements

10. Protection of surfaces not scheduled to be coated

11. Application requirements and procedures

10. Maintain a paint Application Log

1. The Paint Application Log shall be maintained daily for all areas where the Work is being performed.

2. The Paint Application Log shall be turned over to the COR/CO by 9:00 a.m. the following day that the work was performed. The log shall include the following:

a. Date

b. Time

c. Weather conditions (on site)

d. Air Temperature (on site)

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e. Surface Temperature (on Site)

f. Dew Point (on site)

g. Humidity (on site)

h. Material temperature (Before (Separately) and Mixed (Combined)

i. Location/area square footage

j. Description of Work performed

k. Materials used, colors and batch numbers, quantity of materials used

(not including waste)

l. Application/surface preparation equipment and personnel

m. WFT/surface profile measurements

n. Comments, quality control procedures.

o. Signature/title

11. Product Delivery, Storage, and Handling

1. Delivery of materials to site in manufacturer's original, unopened containers and packaging, with labels clearly identifying:

i. Coating or material name

ii. Manufacture

iii. Color name and number

iv. Batch or lot number

v. Date of manufacture.

vi. Mixing and thinning instructions.

vii. Federal Specification Number if applicable.

viii. Application and mixing instructions.

ix. Hazardous material identification label

x. Shelf-life date.

xi. Storage requirements.

12. Storage of Materials:

1. Store materials in a clean dry area and within temperature range according to the coating manufacturer's current written instructions.

2. Do not use materials beyond manufacturer’s shelf-life

3. All coating shall be delivered to the shop or job site in original, unopened containers with labels intact. Each container shall bear the Manufacturer’s name and label. Minor damage to containers is acceptable provided the container has not been punctured or the lid seal broken

4. Each container of coating shall be clearly marked or labeled to show coating identification, date of manufacture, batch number, and other information as needed to meet regulatory requirements. Each type of coating shall be accompanied by the manufacturer’s Safety Data Sheet (SDS) and product data sheet containing information such as basic chemical composition, acceptable weather conditions for application, and proper storing and mixing.

5. The label information shall be legible.

6. Coating which has livered, gelled, or otherwise deteriorated during storage shall not be used.

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7. Materials exceeding storage life recommended by the Manufacturer shall be removed from the site.

8. The coating temperature shall be within the coating manufacturer’s current written recommended application temperature before use.

9. Flammable materials shall be stored according to state and local codes.

10. Contractor shall be responsible for the safe removal and lawful disposal of all waste materials.

11. The Contractor shall take all precautions and implement all measures necessary to avert potential hazards associated with the resurfacing system materials as described on the pertinent Safety Data Sheets or container labels.

13. Safety Requirements

1. A safety site plan is required, safety plans shall be subject to review by contracting officials, and designated NPS personnel. The contractor shall not begin any onsite work until plan is received and reviewed by contracting officials.

2. The Contractor shall comply with all health and safety regulations and requirements of OSHA (or State Health and Safety Regulatory Agency), SSPC-PA Guide 3, and the paint and abrasive manufacturers.

3. All rigging and fall protection equipment used shall meet or exceed OSHA/ANSI standards.

4. Provide adequate illumination (SSPC-Guide 12) for the task being performed.

5. The Contractor and crew members should comply with all federal, state, and local regulations consistent with the NACE Pub. 6D-173 “A Manual for Painter Safety”

6. Contractor shall be responsible for the permitted confined space and shall adhere to all OSHA requirements regarding confined space including providing all equipment and personnel necessary.

7. Contractor shall be responsible to erect and maintain scaffolding according to OSHA standards.

8. The Contractor shall maintain a clean work area and have fire extinguishers on-hand.

9. Matches, flames, or sparks resulting from any source including welding, must be removed from the work area during coating work.

10. Supplemental heat sources may be required to maintain both ambient and surface temperatures within the range recommended by the manufacturer for paint system application.

11. The provision of all supplemental heat energy sources, power, equipment and operating, maintenance, and temperature monitoring personnel is the responsibility of contractor.

14. Project Conditions & Environmental Requirements

1. If required to maintain project schedule, the contractor shall provide and utilize dehumidification and ventilation equipment to control humidity, temperature, and vapor levels from beginning of the surface preparation process through coating application and after the last coating is applied.

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2. System shall be compatible with removal of dust and solvent vapors and shall have fail-safe measures to ensure reliability during operations.

3. If dehumidification and ventilation equipment is not already being used, the Contractor must ventilate tank interior areas and other containment service areas according to written procedures outlined by the coating manufacturer.

4. The contractor shall employ abrasive blast containment in accordance with SSPC Guide 6, Class 2 and Federal, State, and Local requirements. In conjunction with full containment, the Contractor shall provide adequate dust collection and negative air to the containment system to prevent the release of emissions to the environment.

5. Apply paints only when the temperature of surfaces to be painted, paint material, and the surrounding air temperatures within specifications listed by manufacturer's current printed instructions for coating system being applied.

6. Apply paint system within the shortest possible time consistent with manufacturer's approved recommended curing instructions for each coat. If chemical, salt, or other contamination encounters the paint film between coats, it shall be removed according to the coating manufacturer written recommendation and the surface restored before applying the remainder of the coatings.

15. Protection:

1. Care shall be exercised to prevent spent abrasive, water, or dust from falling on surrounding buildings, unprotected vegetation, walkways, soils, structures, and equipment by covering these areas with non-tearing tarps. Spent abrasive collecting on the ground shall be cleaned up regularly to prevent it from becoming windblown. The site shall always be kept as clean as possible. At the end of the workday, all spent abrasive shall be thoroughly cleaned up and the site left with a neat appearance.

2. Spent abrasive resulting from the blasting of the "affected surfaces" shall be collected and disposed of by the contractor in a legal and responsible manner. Such disposal shall also be in conformance with all applicable codes, ordinances and regulations for hazardous waste disposal. All other waste, including spent abrasive generated by the blasting of non-affected surfaces, shall be disposed by contractor.

3. All reasonable care shall be taken to protect against paint splatter and overspray.

Responsibility for any damage incurred to surrounding property resulting from this work belongs to the contractor.

16. Products

1. Contractor shall be knowledgeable and experienced in installation of the manufacturer’s coating system specified.

i. Specification basis of design is Tnemec

ii. Finish coat shall be Tnemec White

iii. All coatings shall be supplied by one coating manufacturer and shall have compatibility with all coating systems to be used.

17. Painting System

1. Interior Steel (Hydro-Zinc/100% Solids Epoxoline System)

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2. NSF/ANSI/CAN Std. 61 & 600: For use inside potable water storage tanks

3. Surface Preparation: SSPC-SP 10/NACE 2 with a minimum angular anchor profile of

2.0 mils or as specified on the manufacturer’s data sheet use which ever profile is greater

4. Filler (If steel substrate conditions are questionable obtain direction and clarification in writing from the COR/CO before continuing)

5. All coating system components shall be installed consistent with the manufacturer’s published product data sheets and meet all specified recommendations for each product’s installation.

6. Prime Coat: Tnemec Series 91H20 or 94H20 Hydro-Zinc

7. Stripe Coat: Tnemec Series L140F PotaPox Plus

8. Finish Coat: Tnemec Series 22 or FC22 Epoxoline

i. All products of the coating system shall meet the health effects requirements of NSF/ ANSI/CAN 600 according to the requirements of NSF/ANSI/CAN 61 including the most current health effects criteria for xylenes, toluene, and ethylbenzene.

9. Interior, Wet: Caulk

i. ANSI/NSF 61 Certified: For use inside potable water storage tanks.

ii. Sika Flex 1A or equivalent

10. Following the completion of the final coating inspection a Manufacture’s representee may review inspection reports from all project aspects to assure compliance with the manufacture’s posted application instructions.

11. Primer used shall be certified in accordance with NSF 61 for use in potable water applications.

18. Substitutions

1. No products that decrease the film thickness, the surface preparation, VOC's, solids by volume or the generic type of coating specified shall be considered. Accepted manufacturers shall furnish the same color selection as the manufacturers specified, including accent colors and custom colors in all coating systems, and shall document satisfactory performance of the coating system for at least 5 water tanks that have been in service at least five years each.

19. Execution & 3rd Party NACE level 3 Inspector

1. An independent NACE level 3 certified Inspector will be utilized to assess the work performed in this contract.

2. Contractor shall obtain and pay for independent NACE LEVEL 3 CCI inspector to be onsite to provide independent Third-Party inspection of the cleaning, preparation, application, and testing phases.

3. The independent inspector shall be trained in the use of testing or inspection instrumentation and knowledgeable of the proper use, preparation, and application of the coating product(s) to be used as specified herein.

4. The independent inspector shall possess current certifications from the NACE Coating Inspector Program (CIP) as a NACE CIP Level 3 certified coating inspector.

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5. Provide proof of NACE certifications.

6. Independent NACE Third Party Inspection Responsibilities will include but are not limited to:

i. Provide and maintain permanent written records of Hold Point inspections performed.

ii. Inspection forms and an inspection plan will need to be submitted to park

COR/CO for review and acceptance

iii. Verify and record that the coatings and other materials are as specified (i.e., manufacturer, product name & product batch dates).

iv. All inspection documents will be provided to park personnel

v. Verify and record condition of coatings and material along with their storage procedures.

vi. Verify and record environmental conditions while on site

vii. Surface Preparation Inspection - Verify and record that the specified surface preparation meets or exceeds specified cleanliness standard and surface profile as specified by the manufacture’s posted application instructions.

viii. Check for characteristics or defects that would adversely affect performance or appearance of coating systems.

ix. Verify and record coating mixing and thinning procedures, i.e., batch dates, amount mixed, material temperatures, induction time etc.

x. Verify and record application procedures.

xi. Coating Inspection - Verify and record the DFT readings of the of each coat.

Check the applied coating film for characteristics or defects that would adversely affect performance or appearance of coating systems, i.e., runs, sags skippers, inconsistent, poor coverage.

7. Dry film thickness readings of ferrous and non-ferrous substrates shall be done in accordance with SSPC-PA 2 (Level 3).

8. NACE Inspector to observe all holiday testing being conducted by the contractor.

9. All inspection equipment to be used must be certified and still within certification during the inspection process. Inspector shall provide documentation of all measurement and inspection instruments, including the manufacture, model name, serial number, and most recent calibration date of equipment.

10. Verification/Compliance of Inspection Instruments Only use inspection equipment in good working order and that has been certified by the equipment manufacturer on a yearly basis minimum.

11. Certificates of calibration must be provided to the COR/CO upon request.

12. Contractor is required to comply with inspector reports and results produced during the project. Project Work stages will only advance with the acceptance of the inspector and designated NPS personnel. Any results produced by the inspector that do not meet the specifications will require the contractor to mitigate or continue rehab work until appropriate results are produced.

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13. Contractor is required to furnish all coating system information to inspector for review, and agreeance of a work schedule for the application of coating system

14. Inspector is responsible for inspection and testing of all work as needed to ensure that the quality of materials, workmanship, construction, finish, and functional performance is compliant with applicable specifications and drawings.

15. Workmanship, field preparation, and application shall conform to AWWA D102 and SSPC Standards PA1 and PA2

16. Examine the areas and conditions under which painting work is to be performed and notify COR/CO, in writing, of conditions detrimental to the proper and timely completion of the Work. Do not proceed with the Work until unsatisfactory conditions have been corrected in a manner acceptable to COR/CO

17. Do not paint over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions otherwise detrimental to the formation of a durable paint film capable of performing in accordance with claims made in manufacturer's product literature for the surfaces and conditions encountered.

18. Contractor will provide lighting for all work areas to be inspected as prescribed in SSPC Guide 12. No coating inspections shall be conducted until the minimum lighting requirements for inspection is provided. All expenses due to delays, extra coating inspections etc. is the sole responsibly of the contractor.

19. Contractor will assure that all surfaces and areas to be inspected shall be clean and ready for inspection so the coating and/or lining system can be immediately applied. No inspections shall be conducted if areas and/or surfaces have dust and debris floating in the air and/or covering the substrates to be inspected. All expenses due to delays, extra coating inspections etc. is the sole responsibly of the contractor.

20. Equipment

1. Compressed air used in blasting and painting shall be free of excessive residue such as water and oil, these systems shall be equipped with clean filters and traps.

2. Sufficient ventilation shall be provided during blasting, painting, and curing.

3. Contractor must have sufficient explosion proof ventilation equipment to effectively and efficiently remove dust and any accumulation of vapors or volatile gas formed during blasting, cleaning, and coating.

4. Contractor is responsible for properly venting the elevated tank during all project components.

5. Contractor shall provide all rigging & lifting components associated with the elevated tank interior rehab.

6. The contractor is responsible for all equipment related to measuring of project components for daily log creation. Measurement tools are required onsite throughout the entire project. Equipment includes but is not limited to Wet & Dry film thickness gauges, wet bulb, dry bulb measuring equipment, ambient

18 | P a g e temperature monitoring thermometer, steel temperature thermometer, holiday detector equipment, air quality monitoring devices.

7. Equipment used for measurements and inspection reporting shall have identifying numbers to coincide with data produced by such equipment.

21. Surface Preparations & Abrasive Blast Cleaning

1. Tank interior blasting, cleaning and rehabilitating of steel components shall follow

SSPC guidelines listed in this contract.

2. SSPC-SP10/NACE 2 Near-White Blast Cleaning with a minimum angular anchor profile of 3.0 mils or as specified by product manufacturer.

3. Contractor will conduct and provide documentation of measurements of the surface profile of areas blasted.

4. Stripe coating shall be performed on all interior welds, joints, bolts, nuts, threads, corners, and component intersections such as ladders and manways.

5. All surfaces must be clean, dry, and free of oil, grease, chalk, and other contaminates.

6. All abrasives shall be dry, clean, free of oil, grease, dirt, chemicals, and other contaminants that may interfere with adhesion of coating. Particle size of the abrasives used shall produce a sufficient surface profile that is in accordance with the manufacturer’s recommendations.

7. All expendable abrasives shall meet the minimum requirements of SSPC-AB I and all abrasives meet the requirements of Class A (of SSPC-AB 1) for silica content (crystalline silica less than 1% by weight before blasting).

8. Shot, Garnet, Slag, or Other Alternative Abrasives shall meet the requirements of

SSPC-AB 3

9. All abrasive debris, dust or paint droplets that are unable to be sufficiently contained within the jobsite boundary will be cause for project shut down until proper measures can be accepted and implemented.

10. Abrasives used for blasting & cleaning shall be those mentioned under the specifications of the SSPC. Attention shall be given to the maximum particle size requirements listed in SSPC specifications.

11. Abrasive media must be chosen based on the recommended surface profile and degree of cleanliness required for SSPC/AMPP and the manufacturer’s recommended profiles of specified coating system to be used.

12. Prepare all substrates new or existing according to the coating manufacturer’s current written guidelines for the accepted coating system and its intended service environment.

13. Provide lighting for all work areas as prescribed in SSPC Guide 12.

14. Existing materials specified to be painted as part of the Work shall have their surfaces prepared to meet the requirements of the painting systems specified.

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15. Where existing paint systems will provide the substrate for painting systems specified, provide adhesion testing on existing surfaces to be painted, according to the coating manufacturer’s recommendations.

16. Test surfaces for cleanliness according to ISO 8502-3 (Preparation of steel substrates before application of paint and related products-Tests for the assessment of surface cleanliness

22. Inspect Surfaces

1. Upon Completion of surface preparation, the 3rd party NACE certified inspector shall be required to test and inspect surface profiles and report to project manager and NPS contract officer before moving forward with primer applications.

23. Materials preparations

1. General Preparation

1. Mix and prepare painting materials in strict accordance with the coating manufacturer's current product literature.

2. Only use coating materials of the submitted coating manufacturer. Do not mix any painting materials produced by different manufacturers.

3. Any deviation of mixing procedures must be accepted in writing by the COR/CO before any procedural change will be allowed.

2. Mixing

1. For those products requiring constant agitation, use methods in compliance with manufacturer's product literature, to prevent settling during paint application.

2. No thinning will be permitted in order to maintain manufacturer’s extractable standard for use in potable water NSF/ANSI/CAN 600 &

NSF/ANSI/CAN 61

3. Contractor is responsible all clean up and for any damage associated from splash and/or spills.

24. Application Requirements

1. Pumps and Compressors must be able to achieve acceptable pressures and flow for manufacturer’s coating application specifications.

2. Contractor shall ensure design and use of systems will perform at the 100’ height of the elevated tank to assure compliance with the manufacturer’s product specifications.

3. All equipment to be used on site with this project shall be in good operating condition and have the capacity to achieve satisfactory results for cleaning and painting per the manufacturer’s specifications of application.

4. Spray equipment and the tip sizes shall be used in accordance with the manufacturer’s application specifications.

5. Mix and apply coatings by brush, roller, or spray in strict accordance with manufacturer’s installation instructions.

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6. Utilize application equipment as recommended by the coating manufacturer current PDS and/or application guide for each product used.

7. All coatings shall be applied to the manufacturer’s specifications, no work that deviates from the manufacturer’s specifications of each coating product will be accepted.

8. Provide complete coverage to dry film thickness range specified.

1. All paint systems are "to cover." In situations of discrepancy between manufacturer's square footage coverage rates and mil thickness, mil thickness requirements govern.

2. When color or undercoats show through, apply additional coats until paint film is of uniform finish and color.

3. Apply paint systems by brush, roller, or airless spray in accordance with manufacturer's recommendations and in compliance with Paint Application Specifications No. 1 in SSPC Vol. 2, where applicable.

4. Coated surfaces shall be free from runs, drips, ridges, waves, laps, and brush marks.

9. Do not apply consecutive coats until the COR/CO and/or CCI has had an opportunity to observe and accept previous coats.

10. Apply materials under adequate illumination as required under SSPC-Guide 12 Guide for Illumination of Industrial Painting Projects

11. Avoid degradation and contamination of blasted surfaces and avoid inter-coat contamination.

12. Re-coat within time limits specified by coating manufacturer.

13. If re-coat time limits have expired re-prepare surface according to the coating manufacturer’s current printed recommended.

14. Allow coated surfaces to cure according to coating manufacturer’s written recommendations prior to allowing traffic or other work to proceed.

25. Prime Coat Application

1. Prime all surfaces indicated to be painted. Apply prime coat according to coating manufacturer's written instructions.

2. All abrasive shall be vacuumed cleaned or swept and vacuum cleaned.

26. Finish Coat Application:

1. Apply finish coats according to coating manufacturer's written instructions.

2. Touch up damaged finish coats using same application method and same material specified for finish coat by manufacturer.

27. Repairs

1. All repairs and corrective work will be done according to the coating manufacturer’s provide written recommendations. No repairs will be completed without the coating manufacturer’s written recommendations.

28. Field Quality Control

1. Provide the number and location of tests that shall be sufficient for contractor to determine the condition of an acceptable substrate for new coatings.

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2. Submit testing plan prior to testing and provide COR/CO a copy of adhesion test results.

3. The contractor is responsible for any dust, debris, and paint overspray droplets that may affect surrounding environmental areas, communities, or personal property.

29. Painting Contractors:

1. Maintain permanent written records of daily Q/C responsibilities (Full Time).

2. Daily verify and record that the coatings and other materials are as specified (i.e., manufacturer, product name & product batch dates).

3. Daily verify and record condition of coatings and material along with their storage procedures

4. Daily verify and record surface preparation and application of coatings as specified.

5. Daily verify and record coating mixing, i.e. batch dates, amount mixed, material temperatures, induction time etc.

6. Daily verify and record application procedures.

7. Environmental readings must be obtained in the area that the work is taken place.

i. Environmental readings shall not be obtained from computers, TV or cell phone apps. Readings shall be immediately taken should a sudden change in the climate be observed.

8. Daily verify and record WFT and DFT of each coat of the coating system are as specified using new wet film gauges and certified dry film thickness gauges. Dry film thickness readings shall be done according to SSPC-PA 2 (Level 3).

9. Check for discontinuities on steel immersion surfaces using holiday detector (NACE SP0-188). Any discontinuities located shall be corrected in according to with the coating manufacturer’s most current written recommendations/guidelines.

10. All corrected discontinuities shall be re-tested according to (NACE SP0-188) until compliant.

11. All inspection equipment to be used must be certified and still within certification during the inspection process.

12. All Coating work will be subject to inspection by 3rd party inspector and designated National Park Service (NPS) personnel. The contractor will make all work areas accessible to the inspector and designated NPS personnel. Rigging and fall protection systems installed by contractor shall remain in place for inspector to access work areas.

13. The contractor shall be responsible for performing and recording of holiday testing of dry film thickness, and coating consistency. Equipment should have current calibrations and results should be produced by experienced and certified personnel.

30. Curing & Tank Ventilation

1. During the Curing process any openings to tank interior shall be screened with a stainless steel 24-mesh non-corroding screen to prevent debris or wildlife from entering the tank, and tank components.

2. The length of time for curing shall be dependent on the manufacturer’s coating system specifications and temperature during the curing process.

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3. The Curing process shall be documented, and records shall be provided to NPS CO/COR, Records may be reviewed by paint manufacture representee for acceptance of proper curing in compliance with coating/lining system specifications.

4. The Contractor is responsible for monitoring tank temperatures, site conditions, and ambient weather conditions during curing process.

5. Forced air system shall be supplied by contractor.

6. No offensive odor shall be present in the tank or any components of the potable water storage facility, if such odor exists or is detected by NPS personnel the contractor is responsible for removing/mitigating and testing for any potential water quality problems from the facility before the tank may be disinfected and or returned to service.

31. Disinfection of Water Storage Facility

1. Disinfection of potable water tank shall be consistent with ANSI/AWWA Standard

C652-11 and meet the bacteriological standards for AWWA/AZDEQ

2. The contractor is responsible for tank disinfection upon completion of rehabilitation work.

3. Project Plan must include the intended disinfection method to be used by contractor.

32. Dechlorination NPS Acceptable Methods/Procedures

1. Dechlorination procedures shall be consistent with AWWA C655-18 Standard

2. The contractor shall be responsible for providing the Dechlorination method intended

3. The contractor will be responsible for the Dechlorination of any chlorinated water during disinfection process

33. Adjustment & Clean Up

1. Upon completion of painting, remove any spattered paint by proper methods of washing and scraping, using care not to scratch or otherwise damage finished surfaces. Any damage associated with the cleaning and removal process is the contractor’s responsibility.

2. At the completion of work, touchup and restore all damaged or defaced painted surfaces as determined by Inspector and/or COR/CO.

34. Warranty Inspection

1. A warranty inspection shall be performed by an independent inspection company during the eleventh month following completion of all coating work. The inspection shall be carried out in accordance with AWWA M42 Steel Water Storage Tanks Section 9 and Appendix C.

2. The independent inspection company hired by the contractor shall be an NACE Level III certified…