Kaibab-SOW-PotableWaterTank.docx

Table of Contents

SECTION 1 – BASE BID ITEMS

Base Bid Items:

Total Base Bid

* LS = Lump Sum, LSQ = Lump Sum Quantity Total Base Bid:

SECTION 1A – OPTIONAL BID ITEMS

Optional Bid Items:

Total Optional Bid

* LS = Lump Sum, LSQ = Lump Sum Quantity

* AQ = Actual Quantity, EA = Each Total Optional Bid:

SECTION 2 – GENERAL

2.01 INTRODUCTION

This objective of this project is to apply new coatings to the interior and exterior of three (3) POTABLE steel water storage tanks and clean, inspect, complete surface repairs for one (1) underground POTABLE fiberglass water tank located on the Kaibab National Forest.

The work for the potable steel water tanks will consist of proper surface preparation and painting of all existing interior and exterior surfaces throughout each project area. Provide all labor, materials, tools, equipment, and any incidentals required to furnish and apply the coating systems.

The work for the underground potable fiberglass water tank includes providing all personnel, equipment, materials, and incidentals to the project site to complete the cleaning, inspection, and providing minor patching of surface repairs. The work will be scheduled to be done in a “drained” tank.

2.02 PROJECT LOCATIONS

All the potable steel water storage tanks in this project are in seasonal campgrounds located in the surrounding areas of Williams, AZ. The underground potable fiberglass tank is in a seasonal campground at DeMotte Campground which is located on the North Kaibab Ranger District, south of Jacob Lake, AZ. The locations of the tanks are as follows:

A. Dogtown Lake Water Tank (Steel Tank – 20,000 gallons) – From Williams, turn south on 4th Street (FR 173-Perkinsville Rd) for approximately 3.5 miles to Forest Road 140. Turn left on FR 140 and continue for three miles to FR 132, turn left onto FR 132 and follow to Dogtown Lake. The coordinates of this location are Latitude 35.207213° and Longitude -112.129373°.

B. Kaibab Lake Campground Water Tank (Steel Tank – 20,000 gallons) – From Williams, AZ, take I-40 east to exit 165. Turn north onto State Highway 64 toward Grand Canyon and go one mile to the campground entrance on the left. Once inside the campground, the tank is located on the east side. The coordinates of this location are Latitude 35.280259° and Longitude -112.148403°.

C. Whitehorse Lake Campground Water Tank (Steel Tank – 20,000 gallons) – From Williams, AZ, turn south on 4th street (FR173, Perkinsville Road) and go 9 miles to FR 110; turn left onto FR 110; go about 7 miles and turn left onto FR 109; follow to campground entrance. The tank is located on the north side of the campground. The coordinates of this location are Latitude 35.120326° and Longitude -112.017421°.

D. DeMotte Campground Water Tank (Underground Fiberglass Tank – 6,000 gallons) – Located near Jacob Lake, AZ, approximately 25 miles south of the Kaibab Plateau Visitor Center on state highway 67. The campground is located on the west side of hwy 67. The coordinates of this location are Latitude 36.412879° and Longitude -112.137892°.

E. OPTIONAL BID ITEM – Spring Valley Cabin (Underground Fiberglass Tank – 3,000 gallons) – Located near Parks, AZ, take exit 178 off of I-40 (about 14 miles east of Williams, AZ). Proceed 0.1 mile and turn left; follow this road (Old Route 66) ½ mile; turn right onto Spring Valley Road (County Road 141) at the Old Parks Store. Continue for approximately 8 miles and look for the Spring Valley Cabin sign; turn left on FR 76 and proceed ¾ mile and the cabin will be on the left hand side. The coordinates of this location are Latitude 35.356630° and Longitude -111.956745°.

2.03 EXISTING CONDITIONS – BASE BID

Each of the tanks are listed with a general description of the access. Appendix A includes tank information such as the latitude/longitude, construction year, capacity, and material. There are google maps of each tank in Appendix B. Most of the access points to the tanks may have a locked entrance gate.

A. Seasonal Campgrounds – Access and Water Information:

1. Dogtown Lake – Tank is accessible by a less maintained service road which is approximately 843 feet from the campground’s graveled entrance road. There is a locked gate at the entrance of maintenance access road. The tank is in a locked fenced perimeter. Water is hauled to this site. See map in Appendix B.

2. Kaibab Lake – Tank is accessible by a dirt, maintenance service access road from the paved campground roads. The distance from the campground road is approximately 978 feet. There is a locked swing gate at the service entrance. Water is hauled to this site. See map in Appendix B

3. Whitehorse Lake – Tank is accessible by a dirt, steep sloped maintenance access road which is approximately 518 feet. The roads within the campground are paved, but the maintenance road is not maintained. Water is hauled to this site. See map in Appendix B.

4. DeMotte Campground – Tank is accessible by a well, maintained forest service road through a locked gate at the end of campground area. This distance from the intersection of Hwy 67/FSR 22 to the tank is approximately 0.51 mile. Water is hauled to this site. See map in Appendix B.

B. Steel Water Tanks – Information:

Three tanks – Dogtown Lake / Kaibab Lake / Whitehorse Lake Campgrounds Capacity: 20,000 gallons Style: Above ground, welded steel, vertical tank Dimensions: Approximately, 10.5-ft diameter x 30-ft in height. (Contractor shall field verify) Access to the tank interior is via 24” manway lids on the top and sides of the tank. See Appendix B for photographs of each tank.

C. Fiberglass Water Tank Information:

Capacity: 6,000 gallons – DeMotte Campground Style: Underground, Fiberglass, Horizontal position Dimensions: DeMotte – Approximately 29.5-ft long x 6-ft diameter Access to the tank interior is via 30” bolted, lockable manway lid through riser on top of tank. See Attachment B for photographs, map, and drawing of tank.

2.04 EXISTING CONDITION – OPTIONAL BIDS

The Spring Valley cabin is set up with an underground fiberglass potable water tank.

1. Spring Valley Cabin – Tank is accessible by a maintained forest service road. There is a well at this site. Access to the tank interior is via 20” manway lid through 24” riser on top of tank. See map, photos, and drawing of tank in Appendix B.

A. Fiberglass Water Tank Information:

Capacity: 3,150 gallons – Spring Valley Cabin Style: Underground, Fiberglass, Horizontal position Dimensions: Approximately 15.5-ft long x 5-ft diameter

2. New Floor – Steel Tank – Whitehorse Lake Tank If existing steel floor condition is in unrepairable condition which is mostly deeply pitted and/or leaking and cannot be reasonably repaired with epoxy, immediately notify COR. Authorization from CO is necessary prior to this work. The new thickness shall be ¼” thick and Contractor shall field verify dimensions.

Contractor shall submit technical data of material to be supplied and installed for new floor, if necessary. This shall be reviewed and approved by COR before ordering.

2.05 REFERENCE STANDARDS AND REGULATORY AGENCIES

ASTM International (ASTM)

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

2. ASTM D 3960, Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coating.

American National Standards Institute (ANSI)/NSF International (NSF)

1. ANSI/NSF Standard 60: Drinking Water Chemicals – Health Effects

2. ANSI/NSF Standard 61: Drinking Water System Components – Health Effects American Water Works Association (AWWA)

1. AWWA D 102 Coating Steel Water – Storage Tanks NACE International (NACE)

1. NACE SP0188 (Standard Practice Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

2. NACE Publication 6D-173 A Manual for Painter Safety National Bureau of Standards (NBS)

1. Certified Coating Thickness Calibration Standards The International Organization for Standardization (ISO)

1. 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) U.S. Occupational Safety & Health Administration (OSHA) Environmental Protection Agency (EPA) Arizona Department of Environmental Quality (ADEQ)

2.06 DEFINITIONS

Specific coating terminology used throughout shall be in accordance with the definitions in ASTM D 16, ASTM D 3960 and the following definitions:

1. 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.

2. The term “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.

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

4. 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.

5. 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.

6. 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 unbroken condition.

7. 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.

8. 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.

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

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

11. 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.

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

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

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

15. 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.

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

2.07 GENERAL SITE CONDITIONS, FACILITIES AND TEMPORARY CONTROLS

A. Contracting Officer’s Representative (COR) – The COR is a Forest Service official designated by the Contracting Officer to perform day-to-day contract administration, including site inspections for quality assurance.

B. A site can be made available to the Contractor for temporary staging and storage during the duration of the project and will be located by the COR at the beginning of work. Any damage resulting from the Contractor’s use of this site will be repaired or replaced at the Contractor’s expense at the direction of the COR.

C. Many of these tank locations may have little to no cell phone coverage and will not have immediate access to restroom facilities. Contractor is responsible for providing sanitation facilities or porta-potties for their employees. All temporary services and use areas shall be completely removed and be restored upon completion of use.

D. Transportation to and from the work site for the Contractor's personnel and materials will be provided at the Contractor's expense.

E. The Contractor shall take reasonable measures to secure equipment and contract work against theft and vandalism. The Forest Service is not responsible for the theft and/or vandalism of any materials or equipment left at the project site.

F. The work zones shall be delineated and marked adequately to warn visitors, government contractors and all government employees of equipment operations and other hazardous conditions. The Contractor is responsible for providing barrier materials and maintaining barriers such as temporary barricades, barrier tape, curbs, etc. at all work zones. Any damage to existing improvements shall be repaired at the Contractor’s expense according to the direction of the COR.

G. No Government furnished supplies will be provided.

H. There is no water available at each location. All water provided is hauled from local sources. Contractor is responsible for providing potable water necessary to complete all work.

I. There is no electricity available at all sites. Contractor shall provide equipment necessary to complete work.

J. The storage steel tanks will be drained prior to the start of this contract.

K. Supplemental heat sources, as may be required to maintain both ambient and surface temperatures within the range recommended by the manufacturer for paint systems applications are not available at the site.

L. Do not use heat sources, which emit carbon dioxide or carbon monoxide into areas being painted. Properly locate and vent all such heat sources to the exterior such that paint systems are unaffected by exhaust products.

2.08 USE OF PREMISES

A. Driveways, Walkways, and Entrances: Keep driveways, walkways and entrances serving premises clear and available to emergency vehicles and pedestrians. Do not use these areas for parking or storage of materials, unless approved by the COR.

B. During construction, any locked areas to the public shall remained locked or closed. All gates shall be locked at end of each day.

C. Confine storage of materials to areas as approved by the COR.

D. Only potable water shall be used throughout this contract for all work on the tanks.

2.09 CONSTRUCTION SCHEDULE

A. Work shall be scheduled towards the end of the recreational season possibly as early as possible in August/September of 2021.

B. The work shall be coordinated with the COR. Each tank shall be drained accordingly at the start of work for each tank. It is not foreseen to refill the water tanks after work has been completed, but Contractor is responsible for providing potable water to complete all testing.

C. Contractor shall protect the supply/discharge lines in the tank with a temporary plug during all activities until tank is cleaned and work is completed.

D. The campgrounds may continue to operate throughout the duration of the contract. Typically, these are all seasonal campgrounds and scheduled to close end of October or Mid-November.

E. Forest Service will be responsible to provide other means of potable water for their customers at each of the campgrounds after work has started on the tanks.

2.10 PROVISIONS FOR SAFETY AND PUBLIC ACCESS

A. Contractor shall operate in compliance with AWWA C652 (Disinfection of Water Storage Facilities) as it relates to equipment and personnel, safety and disinfection requirements for equipment and personnel at all times.

B. Contractor shall abide by OSHA standards safety regulations for storage water tanks.

2.11 PROVISIONS FOR PROTECTION OF NATURAL RESOURCE

A. Confines all operations to work limits of the project. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

B. Provide temporary barriers to protect existing trees and plants and root zones.

C. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with COR and remove agreed-on roots and branches that interfere with construction.

D. Do not fasten ropes, cables, or guys to existing trees.

2.12 SITE VISIT

A. There will not be a site visit for this project however it is highly encouraged to visit all these sites before submitting bid offer.

B. Questions can be directed to Tina Williams at (928) 326-1496.

2.13 PRE-APPLICATION MEETING

A. A pre-application meeting must take place for each site a minimum of 3 weeks before the application of any coating. Review foreseeable methods and procedures relating to the painting work, including but not necessarily limited to, the following:

1. Review project coating specification and project requirements.

2. Project schedule

3. Field quality control: contractor’s responsibilities, i.e. providing written daily reports and review required samples and submittals, both completed and yet to be completed.

4. Coating Inspector’s Responsibilities, required inspection, testing, certifying and quality control procedures.

5. 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.

6. Material storage requirements

7. Application requirements and procedures

8. Protection of coating systems.

2.14 COMPETENT PERSON

A competent person must be on site at all times as defined by 29 CFR 1926.62(b).

2.15 WARRANTY

A. Approximately ONE year following the completion of the project and acceptance by the Government, the Contractor will be notified (a minimum of four weeks' notice will be given) to schedule a date that the tank will be reinspected.

B. The Forest Service will schedule the re-inspection at the end of the operational season when tank is fully drained. The re-inspection shall include a representative of the Forest Service, the Contractor and a representative of the coating manufacturer present.

C. Contractor shall have coating manufacturer’s representative present during inspection of work to assist with assessment of condition of interior and exterior coating and make recommendations for methods of repair of coating systems as may be required.

D. Repair areas and procedures shall be identified and agreed upon by all, which may be performed and using a product that can be applied for spot repairs by the manufacturer. This product shall be NSF/ANSI 61 approved.

E. Contractor shall provide and have the repair product available at the time of the re-inspection. The Contractor shall repair any defects on the interior and exterior coatings in accordance with the paint manufacturer' recommendations.

F. Remedial Work: Any location where coating has peeled, bubbled, or cracked and any location where rusting is evident shall be considered a failure of coating system. Contractor shall make repairs at all points where failures are observed by removing deteriorated coating, cleaning surface, and recoating with same coating system.

G. Costs: All costs for Contractor’s repair shall be borne by the Contractor. In preparing bid, Contractor shall include an appropriate amount for repair and shall be considered incidental. No additional allowance will be paid by the government for said repair.

SECTION 3 – BASE BID & OPTIONAL BID ITEMS

3.01 BASE BID ITEM #1 – FIBERGLASS POTABLE WATER STORAGE TANK CLEANING, INSPECTION, AND MINOR MAINTENANCE – DeMotte Campground

This line item is to drain, clean, provide “DRY” inspections, and complete minor maintenance to existing underground fiberglass potable water storage tank(s). Minor maintenance shall include providing approved manufacturer’s patching compound, as needed, and removing and replacing the gasket at manway.

All work performed shall adhere to the most current standards and all local and federal regulations related to the work performed. No process or materials shall be employed in such a manner that they will introduce additional hazards into each project site.

The Contractor shall supply all the necessary vehicles, equipment, supplies, tools, and personnel for work as defined in this contract. The Contractor shall keep debris, equipment, and accumulation of waste materials within the staging area at all times.

The Contractor shall clean and “dry” inspect the interior of each water storage tank in order to identify and evaluate current and potential problems that may compromise the structural integrity, safety, operational readiness, security, and water quality of the storage facility. After tank inspection, the Contractor shall provide an inspection report for the tank documenting the existing condition and maintenance recommendations.

Prior to tank entry, all equipment and clothing used in the tank must be decontaminated and sprayed with a chlorine solution, at a concentration of 200 mg/L, in accordance with AWWA C652-86 Section 4.2 (Chlorination Method 2).

During cleaning and inspection of the water tanks, the contractor shall document the existing conditions of the bottom of the tank and surrounding wall surfaces using digital and video cameras.

Interior Sediment Tank Cleaning:

During cleaning of the sediments, any cracks or problems detected on the tank floor shall be recorded on video. The Contractor shall use digital and/or video cameras to document existing conditions of the bottom of the tank and all interior surfaces, including but not limited to, all seams, joints, access points such as manways, risers, vents, etc.

· Tank Cleaning:

All cleaning compounds must be Environmental Protection Agency (EPA), Food and Drug Administration (FDA), National Sanitation Foundation (NSF) approved. The use of cleaning materials containing chlorine such as bleach solution or any other hazardous material is not allowed due to the significant risks posed to workers. The Contractor shall use environmentally preferred products whenever available.

The Contractor shall clean all submerged horizontal surfaces and tank walls to remove bio growths, sediments, silt, sand, sludge and build up and remove all accumulated bottom sediment and debris using a vacuum pump and rotary bristle brush or equal. The storage tank will be drained and shall be isolated by closing the valves to the distribution system while the cleaning is in progress and sediment is removed.

· Tank Inspection:

Once the tank is cleaned, the Contractor shall inspect the tank surfaces and document the existing condition. All appurtenances on the tanks shall also be inspected. Appurtenances include components of the tank such as manways, vents, and access ladders. The contractor shall document any physical defects such as water leaks, cracking, and foundation settlement and list and identify any maintenance items.

· Disposal of Waste Materials:

The Engineer shall designate an area as an appropriate discharge point for waste and debris material collected during the tank cleaning. Sediment and water shall be pumped out of the structure to a designated discharge point. All debris removed from the tanks shall be disposed of in accordance with all applicable federal, state, and local requirements. Removed water and debris will be the responsibility of the Contractor, including any containerization of water and water materials.

· Minor Maintenance:

Minor maintenance shall include NSF epoxy patching or manufacturer’s approved material in accordance with the approved methods for potable fiberglass water tanks.

· Submittals:

1. Water Tank Inspection Schedule

2. Confined Space Entry Permit

3. NSF patching compound for minor repairs

4. Cleaning solution to clean the interior surface of the fiberglass tank

· Deliverables:

1. Inspection report (with color photos). Report shall document existing conditions and recommended maintenance work items for the tank and appurtenances.

2. Narrated digital and/or video file placed on DVD of inspection.

3.02 BASE BID ITEM #2 – STEEL POTABLE WATER STORAGE TANK CLEANING, MINOR MAINTENANCE REPAIRS, WELDS, AND INTERIOR COATING – Dogtown, Kaibab, Whitehorse Lake Campgrounds This line item includes tank blast cleaning, disposing of all the spent abrasives and spent paint, inspecting the steel water storage tanks in order to document existing conditions in an inspection report, minor maintenance such as weld patch or epoxy patch existing leaks and other spots deemed defective. A maximum of five (5) weld patch areas to the tank are included in this item for each tank.

The Contractor shall document any physical defects such as but not limited to water leaks, cracking, corrosion, foundation settlement, condition of the coating inside and outside of the tank, and defective welds or other defects that should be patched. The Contractor shall immediately notify the COR of any leaks detected during inspection of each water storage tank. Authorization of the CO is required prior to any kind of major maintenance or repair initiated by the Contractor.

Section 05125 – Tank Blast Cleaning, Inspection and Maintenance: All work required by the Contractor related to surface preparation, inspection, and maintenance prior to interior coating.

Minor maintenance shall also include removing and replacing all the screens for the vents, overflow pipe, and access points with new fasteners, galvanized clamps, and/or better seals, including replacing all gaskets at manways, and all necessary locations.

The interior of the three (3) above ground steel water storage tanks shall be recoated. Information on each tank is shown on Appendix A and photos of tanks are shown in Appendix B.

Section 09920 – Painting: This specification includes all work related to interior recoating required by the Contractor as well as operating procedures and personnel training records for work in confined spaces and in toxic environments as per OSHA.

The contractor shall field verify the surface area of each steel tank to estimate the quantity of coating materials needed to successfully complete the work.

3.03 BASE BID ITEM #3 – STEEL POTABLE WATER STORAGE TANK CLEANING AND EXTERIOR COATING – Dogtown, Kaibab, Whitehorse Lake Campgrounds This line item includes tank surface preparation, completing minor repairs, and applying exterior coating.

The exterior of three (3) above ground steel water storage tanks shall be recoated. The tanks are at Dogtown Lake Campground, Kaibab Lake Campground, and Whitehorse Lake Campground The Contractor shall document any physical defects such as but not limited to water leaks, cracking, corrosion, foundation settlement, condition of the exterior coating of the tank, and defective welds or other defects that should be patched. The Contractor shall immediately notify the COR of any leaks detected during inspection of each water storage tank. Authorization of the CO is required prior to any kind of major maintenance or repair initiated by the Contractor.

Section 05125 – Tank Blast Cleaning, Inspection and Maintenance: All work required by the Contractor related to paint removal and preparation for painting prior to exterior recoating.

Refer to Section 09920 – Painting for all work related to exterior recoating required by the contractor.

3.04 BASE BID ITEM #4 – COATING INSPECTION SERVICES – STEEL POTABLE WATER STORAGE TANKS – Dogtown, Kaibab, and Whitehorse Lake This line item includes the inspection of the interior/exterior – surface preparation and coating applications for the three potable water steel storage tanks at Dogtown Lake Campground, Kaibab Lake Campground, and Whitehorse Lake Campground.

Contractor shall provide an independent NACE Certified Coating Third Party Inspector to verify and record all coating system applications. The following list is the inspector’s responsibilities (Hold Point):

1. Maintain permanent written records of Hold Point inspection.

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

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

4. Verify and record environmental conditions while on site.

5. Surface Preparation Inspection – Verify and record that the specified surface preparation meets or exceeds specified cleanliness standard and surface profile. Check for characteristics or defects that would adversely affect performance or appearance of coating systems.

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

7. Verify and record application procedures, if on site.

8. Coating Inspection – Verify and record the DFT readings 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. Communicate any possible problems that may need to be addressed and corrected.

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

10. NACE Inspector to observe all holiday testing being conducted by the Contractor.

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

12. Provide written inspection reports and photo logs for each inspection trip.

13. Generate a punch list, conduct follow up inspection and provide recommendations to achieve full compliance and acceptance.

14. Complete a final inspection.

15. Provide Final Report.

3.05 OPTIONAL BID ITEM #A – FIBERGLASS POTABLE WATER STORAGE TANK CLEANING, INSPECTION, AND MINOR MAINTENANCE – Spring Valley Cabin This line item is the same work as described in 3.01.

3.06 OPTIONAL BID ITEM #B – NEW FLOOR – Steel Tank, Whitehorse Lake If existing steel floor condition is in unrepairable condition which is mostly deeply pitted and/or leaking and cannot be reasonably repaired with epoxy, immediately notify COR. Authorization from CO is necessary prior to any work. The new thickness shall be ¼” thick and Contractor shall field verify dimensions.

Contractor shall submit technical data of material to be supplied and installed for new floor, if necessary.

SECTION 4 – PROJECT ADMINISTRATION AND COORDINATION

4.01 ADMINISTRATION

A. Site Examination. Project sites are highly encouraged to be examined before submitting a bid proposal.

B. Pre-Work Meeting. Upon receipt of a written Notice to Proceed, a pre-work meeting with the Forest Service shall be set to review the scope of the project, develop a project schedule, and confirm deliverables.

SECTION 5 – MEASUREMENT AND PAYMENT

5.01 MEASUREMENT AND PAYMENT

Measurement and payment shall be made for required work completed and accepted.

Payment shall be full compensation for all labor and incidentals necessary to complete the project in accordance with the specifications.

During cleaning and inspection of the water tanks, the contractor shall document the existing conditions of the bottom of the tank and surrounding wall surfaces using digital and video cameras.

All work performed shall adhere to the applicable local, state, and federal regulations related to the work performed shown above.

The Contractor shall supply all the necessary vehicles, equipment, material, tools, and personnel for work as defined in this contract.

SPECIFICATIONS

DIVISION 5 – METALS

05125 – TANK BLAST CLEANING, INSPECTION AND MAINTENANCE

PART 1 – GENERAL

1.01 Description:

This section specifies the surface preparation prior to repainting the interior and exterior of the potable water tanks as mentioned in these specifications. The work consists of providing all labor, materials, equipment and all other incidentals necessary for inspecting all existing welding, inspecting the interior and exterior tank surface, scarfing and/or blast cleaning tank interior and exterior, repairing welds that leak or are deemed defective, weld patching or epoxy patching holes and/or pitted areas and other spots deemed defective by the Independent Inspector and/or Engineer, painting interior and exterior of tank, and tank decontamination.

The tank is expected to have defects, rusting, and possibly corrosion pits. However, if during the inspection of the tank, other welds or pits are found which the Engineer deems to have a potential detrimental effect on the structural integrity of the tank, those areas will be patched with epoxy filler (minor pitting) or welding on a patch (deeper pits), as determined by the C.O.R. The Contractor shall remove any undrained water from the tank and prepare the openings to the distribution system to close with a temporary plug until work is completed.

1.02 Related Work Specified Elsewhere

09920 – Painting of Water Tank

1.03 Submittals

a. Welder’s Certification

b. Written plan of action for location of disposal of spent contaminated blasting media

PART 2 - MATERIALS

2.01 – General The 20,000-gallon tanks are above ground steel tanks. The tanks are all equipped with an exterior/interior ladder with or without ladder cage with lockable gate; roof tank access with an overhanging, lockable cover; shell manhole; 4” cone/dome shaped screened vent; 4-inch overflow line with a screened outlet; and a float and board tank level indicator with access points for probes and/or floats.

2.02 – Abrasives:

A. Abrasives shall be approved acceptable by standard industry and/or by recommendation of coating consultants for proper surface preparation. Recommended use of abrasive blasting equipment type is a conventional air, force-feed, or pressure type. Maintaining a minimum pressure of 650 kPa 95 psi at nozzle. Confirm that air supply for abrasive blasting is free of oil and moisture when tested according to ASTM D 4285. Test air quality at each startup, but in no case less often than every five operating hours.

B. Contractor shall submit to the COR for approval of the type of abrasive and method of operation within 10 days after Notice to Proceed.

2.03 Modified Polyamine Epoxy Filler:

For minor repairs – use Modified Polyamine Epoxy, recommended Tnemec Series FC22 Epoxoline or an approved equal. All areas shall follow the recommended surface preparations with the minimum angular anchor profile prior to any application.

PART 3 – EXECUTION

3.01 – Surface Preparation A. Prior to any surface preparation covered in this section, all surfaces should meet the acceptable conditions required. Inspect all surfaces for oil and/or grease contamination. Areas showing oil and/or grease contaminated surfaces will be rejected. Clean in accordance with SSPC SP1 and recheck for contamination until surfaces are free of oil and grease.

B. Remove all hardware, hardware accessories, machined surfaces, plates and similar items already in-place and that does not require field painting or provide effective surface-applied protection prior to surface preparation and painting operations.

C. Remove, as necessary, items, which must be field-painted where adjacent surfaces cannot be completely protected from splatter or overspray. Following completion of painting of each space or area, the removed items shall be reinstalled by workers skilled in the trades involved.

D. Coating products shall not be applied until the COR has inspected the surface preparation, the materials, the mixing of the materials and application of each coating.

E. Interior Surface Preparation Interior surfaces shall be blast cleaned as per the requirement of SSPC-SP10/NACE 2, Near-White Metal Blast Cleaning with a minimum angular anchor profile of 1.5 mils.

The height of profile of the anchor pattern produced on the surface shall be limited to a maximum height that will not be detrimental to the life of the paint film and shall be as per paint manufacturer's recommendations. If the maximum particle sizes specified produces an anchor pattern that is too high or too rough for the paint system, the abrasive must be sized to produce the paint manufacturer's recommendation. The height of the anchor pattern can be determined by grinding a flat spot on the blasted surface until the bottom of the pits are almost reached.

Compressed air shall be free of detrimental amounts of water or oil. Adequate separators and traps shall be used.

The interior surface shall be cleaned by vacuum for the purpose of removing any traces of sediment, blast products from the surface, and also for the removal of abrasive from pockets and corners.

F. Exterior Surface Preparation Exterior surfaces and appurtenances shall be power washed at 2,500 – 3,500 psi to remove all chalk, existing rust, loose mill scale, loose material, dirt and any other contaminants. Follow with SSPC-SP2 or SP3 Hand or Power Tool Cleaning on areas of corrosion or bare metal to remove all loose materials. Feather sand the edge of any remaining topcoat patches for a smooth transition. All surfaces must be clean, dry, sound, and free of oil, grease, and contaminants prior to application of the coating system.

A mock-up is recommended prior to commencement of the work to verify adhesion of the overcoat system.

G. Minor Repair Surface Preparation Repair surfaces would need to be abrasive blasted or prepared with a needle blaster to achieve an SSPC-SP10/NACE 2 Near White Metal Blast Cleaning with a minimum angular anchor profile of 3 mils.

Modified Polyamine Epoxy may also be used to touch up areas of new coating that don’t have sufficient mil thickness or for minor repairs inside the existing tanks. A recommended Tnemec product is the Epoxoline, Series FC22 or an approved equal.

3.02 – Tank inspection:

Remove all chalk, dirt, spent abrasive, debris and other contaminants cleaned from the tank, after the blast cleaning is complete.

All appurtenances on existing steel tanks shall be inspected according to the current standards of AWWA D101 – Inspecting and Repairing Steel Water Tanks for Water Storage and AWWA Manual M42 – Steel Water Storage Tanks. The contractor shall document any physical defects such as but not limited to water leaks, cracking, corrosion, foundation settlement, condition of the coating inside and outside of the tank, and defective welds or other defects that should be patched. The Contractor shall immediately notify the CO of any leaks detected during inspection of each water storage tank.

Tanks shall be drained in accordance with ADEQ prior to inspection. The contractor shall isolate all the water storage tanks from the distribution system. COR shall be given a minimum of 21 days prior to draining of tank(s) to allow FS to generate and provide 14-day public notice.

The CO or a designated representative must accompany the Contractor during the inspection. The Contractor shall adhere to all Confined Space requirements and provide a safe environment in accordance with the sections on Confined Space Procedures, OSHA and other applicable safety requirements.

3.03 – Welding:

There are no known leaks in the tank walls or floor. If holes are found, they will be patched with a circular piece of steel plate, compatible with the existing steel, one-fourth inch and 5/16” thick, by 8 to 10 inches in diameter along the curved walls and the middle band, respectively. The patch plate must be circular and shaped to fit snugly to the tank surface. The plate(s) shall be shop cut or if field cut, the cut shall be at right angles to the plate surface (visual inspection) and ground smooth. Grind existing welds, if necessary, so the patch plate fits snugly against the tank wall. Blast clean (this is in addition to the brush-off blast) the area to be patched in accordance with SSPC-SP6, Commercial Blast Cleaning, prior to welding the patch. Blast clean the plate(s). Weld the patch with a 1/4-inch fillet weld all around. Welding shall be done by AWS certified welders. A copy of their certification must be given and approved by the COR prior to doing any welding.

After blast cleaning and welding, the Contractor shall patch any pitted or rough surface areas of the tank interior with the recommended modified polyamine epoxy as described in paragraph 2.03.

3.04 – Preparation for Painting:

Weld spatter and slag shall be removed by chipping or grinding. Sharp edges of new and existing welds shall be rounded to a smooth contour by grinding. Porous welds shall be ground down to a pinhole-free metal. Pitted areas shall be patched with the modified polyamine epoxy. Remove weld flux from the surface by washing with water.

3.05 – Competent Person:

A competent person must be on site at all times as defined by 29 CFR 1926.62(b).

PART 4 - MEASUREMENT AND PAYMENT

4.01 The work specified herein will not be measured for payment. This work is incidental to other items in this contract and direct separate item payment will not be made.

END OF SECTION 05125

DIVISION 9 – FINISHES

09920 – PAINTING OF WATER TANK

PART 1 – GENERAL

1.1 – Scope:

This section specifies the painting of all interior and exterior surfaces of the water tank. All field surface preparation shall be in accordance with these specifications and the cited specifications of the Steel Structures Painting Council (SSPC).

This work includes, all surfaces of the existing steel potable water tank including all openings for connections, all areas and any appurtenances such as overflow pipes, inflow and outflow pipes, support brackets, float and board type tank level indicator, ladders, rungs, cages, and hatches, etc. All work shall be performed in accordance with OSHA, EPA, and State requirements. This shall include the collection of all spent abrasive, paint and paint particles generated during the preparation phases into containers approved for storing and transporting such waste.

1.2 – Site Requirements

Care shall be exercised to prevent spent abrasive, water, dust or paint over spray from falling on surrounding buildings, unprotected vegetation, walkways, soils, structures, equipment, and surroundings by covering those areas with non-tearing tarps. Spent abrasive collected on the grounds shall be vacuumed regularly to prevent it from becoming wind blown. The site shall at all times be kept relatively clean. At the end of the workday, all spent abrasive shall be thoroughly vacuumed and the site left with a neat appearance. Should wind carry paint over spray onto adjacent occupied buildings, painting shall cease until the wind subsides or other measures are implemented that will not allow paint to reach said buildings. Contractor shall be responsible and liable for cleaning or repairing any object damaged by paint over spray.

1.3 – Project Conditions

1. Supplemental heat sources, as may be required to maintain both ambient and surface temperatures within the range recommended by the manufacturer for paint system applications, are not available at the site.

1.4 – Submittals

A. The Contractor shall submit within 10 days after Notice to Proceed:

1. A comprehensive schedule of work

2. Manufacturer's technical data and certification stating NSF approval of the paint for use in potable water, paragraph 2.1, Paint Materials.

3. Letter of certification from coating manufacturer stating that the specified or submitted coating and thickness to be applied to the new interior and exterior surfaces of the tank are the correct systems for long-term compatibility, protection and performance of the environmental exposures they will be subjected. .

4. Material Safety Data Sheets for paints/solvents.

5. Manufacturer’s color samples – Provide complete color chart for each coating system for review and approval. After preliminary color selection, provide (1) 3”x5” inch sample of final color selected.

6. Exterior coating color – Color shall be similar to existing color to blend aesthetically to natural surroundings – Forest Green.

7. Full Travel Target Tapes – Vinyl with correct type (regular or direct read)

a. Dogtown – Regular markings. (numbering starts from top and increases to the bottom of tank, ie. 1 on top 25 on bottom)

b. Kaibab – Regular markings.

c. Whitehorse – Regular markings.

B. Contractor shall not begin work, unless instructed otherwise by the COR, before these submittals have been received and accepted by the COR.

C. The acceptance of any of the above by the COR does not relieve the Contractor from responsibility to comply with the requirements of the specification.

1.5 – Source Quality Control A. Obtain materials only from manufacturers who will provide the services of a qualified manufacturer’s representative at the site at the commencement of painting work to advise on materials, installation and finishing techniques, at the completion of the Work to advise the COR on the acceptability of completed Work.

B. Obtain each product from only one manufacturer. Multiple manufacturing sources for the same system component will not be approved.

C. Provide the services of a qualified manufacturer’s representative to the Project site at the completion of work to inspect the Work. Deficiencies in the coatings system, if any, noted by the manufacturer during final inspection shall be defined in the manufacturer’s report. The report will include the written procedures to be implemented by Contractor at the Contractor’s expense. This report must be received seven calendar days after the last site visit by the manufacturer.

D. Corrective measures by the Contractor, shall be observed by an INDEPENDENT NACE CCI shall be at the Contractor’s expense. Within seven days after correct 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.

PART 2 – PRODUCTS

2.1 – Paint Materials

A. All paint materials to be used for the tank interior shall be certified to meet ANSI/NSF standard 61, latest edition. Certification shall be a signed written statement by the paint manufacturer. Certification shall be delivered to the Engineer prior to delivery of the paint to the site.

B. The approved materials shall be delivered to the job site in their original unopened containers bearing the manufacturer's name, material name, color name, batch number, date of manufacture, mixing and thinning instructions, application and mixing instructions, hazardous material id label, shelf life date, and storage requirements.

C. Storage of materials shall be in a clean, dry area and within temperature range according to the coating manufacturer’s current written instructions. Keep containers sealed until ready for use. Do not use materials beyond manufacturer’s shelf life limits. Coatings shall be stored in weather tight spaces where the temperature is maintained between 60°F and 90°F unless otherwise recommended in writing by the manufacturer. The coating temperature shall be brought to the coating manufacturer’s current written recommended application temperature before use.

D. The material temperature should be between 70°F and 90°F before application, unless noted otherwise on the current product data sheet.

E. Contractor shall…