A04_1__Agassiz_NWR_-_Replacement_of_Existing_Tanks_with_New_Steel_AST_Doubled_Walled_Tank_Final_SOW.doc

Scope of Work

Removal/Disposal and Installation of New Above Ground Fuel Storage Tank at Agassiz National Wildlife Refuge HQ Office and Maintenance Shop

PART 1 – GENERAL

1.01 Scope of Work: Contractor shall provide all labor, equipment, materials and services to:

A) Remove and dispose of One (1) 500-gallon Convault tank, One (1) 1,000-gallon Convault tank, and Three (3) 1,000-gallon Lube Cube Concrete Tanks from Agassiz National Wildlife Refuge HQ office at 22996 290th Street NE, Middle River, MN 56737 and Agassiz NWR Maintenance Shop at 29600 280th Avenue NE, Middle River, MN 56737.

B) Install Flameshield ® Tanks: Two (2) 500-gallon Round Horizontal Above-Ground Tank UL-142 listed, doubled walled steel tank for storage of (petroleum products at near atmospheric pressure with accessories and services at Agassiz NWR Maintenance Shop at 29600 280th Avenue NE, Middle River, MN 56737.

1.02 Standards

The manufacture and installation of aboveground storage tank systems described in this section shall adhere to the following standards and regulatory requirements:

A) Underwriters Laboratories Inc.

1. Standard for Steel Aboveground Tanks for Flammable and Combustible Liquids, Standard UL 142,

2. Control Equipment for Use with Flammable Liquid Dispensing Devices, UL 1238,

3. Pipe Connectors for Flammable and Combustible Liquids and LP-Gas, UL 567,

4. Powered-operated Dispensing Devices for Petroleum Products, UL 87,

5. Valves for Flammable Fluids, UL 842, and

6. UL Listed Non-Metal Pipe, UL 971.

B) Petroleum Equipment Institute

1. Recommended Practices for Installation of Aboveground Storage Systems for Motor Vehicle Fueling, PEI/RP200,

2. Recommended Practices for Installation and Testing of Vapor Recovery Systems at Vehicle Fueling Sites, PEI/RP300 C) Southwest Research Institute

1. SWRi 97-04, Southwest Research Institute, “Fire Tested Tank Performance Standard” D) Steel Tank Institute

1. Standard for Flameshield ® Standard for Fire Tested Tanks, F-001-01,

2. Recommended Practice for Corrosion Protection of Underground Piping Networks Associated with Liquid Storage and Dispensing Systems, R892,

3. Standard for Inspection of In-Service Shop Fabricated Aboveground Tanks for Storage of Combustible and Flammable Liquids, SP001-00, E) National Fire Protection Association

1. Flammable and Combustible Liquids Code, NFPA 30, 2015,

2. Automotive and Marine Service Station Code, NFPA 30A, 2015,

3. National Electric Code, NFPA 70, 2023 F) Occupational Safety and Health Standards

1. Flammable and Combustible Liquids, 29CFR 1910.106,

2. Personal Protective Equipment 29CFR 1910 Subpart I,

3. Excavations 29CFR 1926.650 Subpart P

G) Environmental Pollution Agency

1) Clean Water Act and Oil Pollution Act of 1990,

2) Spill Prevention, Control and Countermeasure (SPCC) Plans, 40 CFR 112, 113 and 114.

H) Applicable state and local regulations and ordinances

1) Minnesota Admin Rule, Chapter 1305, Adoption of 2018 International Building Codes

2) Minnesota Admin Rule, Chapter 7151, Above Ground Storage of Liquid Substances

3) Minnesota State Fire Code 2020, Chapter 57 Flammable and Combustible Liquids In case of differences between building codes, state laws, local ordinances, utility company regulations, and contract documents, the most stringent shall govern.

The codes and standards listed are the latest as of this publication. Codes and standards are continuously updated. The Contractor shall confirm the construction standard edition enforced by the authority having jurisdiction.

1.02 Site Planning:

A. Tank location: Tanks shall not be installed closer than 3 feet apart. Tanks shall be installed on current cement pad. The cement pad is 24’ long by 16’ wide. The current site has bollards already installed and shall be protected from damage during removal of old tanks and installation of new tanks. See Attachment 1 – Agassiz NWR Location and Photos.

1.03 SUBMITTALS: The contractor shall submit for approval the manufacturer’s name, tank data, materials of construction, UL listing, installation instructions and warranty.

A. Specifications – Product data sheets and descriptive material for components.

1. Tank,

2. Piping, Venting Equipment, Leak Detection Equipment, Overfill Prevention Equipment (e.g., Alarms or Device),

3. Pump, Fittings (e.g. tank, break away), Filters, Valves,

4. Tank Coating

B. Drawings

1. Shop drawings of the tank(s) by the tank manufacturer.

2. Assembly and installation drawings and instructions.

C. Testing

1. Testing Instructions

PART 2 - PRODUCTS

2.01 Fuel Storage Tanks:

A. Remove and dispose of One (1) 500-gallon Convault tank (Unleaded Gas), One (1) 1,000-gallon Convault tank (Unleaded Gas) located at Agassiz NWR HQ Office, and Three (3) 1,000-gallon Lube Cube Concrete Tanks (One (1) Unleaded Gas and Two (2) Diesel) located at Agassiz NWR Maintenance Shop;

1) Agassiz NWR HQ Office Tanks:

a) Transfer of Gasoline fuel from old tank to new tank at shop location. (Note: Need to coordinate with station to have at lowest level possible.)

b) Dispose of residual fuel remaining in tank (unleaded gasoline) from tanks.

c) Disconnect electrical, remove all electric wiring, electrical conduit, and emergency shut off back to the electrical panel.

d) Recycle concrete and metal from Convault tank.

e) Dispose of unrecyclable material from Convault tank.

f) Provide Manifest or disposal tickets for hazardous material, recyclable material, and material that could not be recycled. Provide Type of Material, Amount (e.g., weight, volume), Transporter, Location Receiving Material, and Manifest or Disposal Ticket record.

2) Agassiz NWR Maintenance Shop

g) Transfer of Gasoline fuel from old tank to new tank. (Note: Need to coordinate with station to have at lowest level possible.)

h) Transfer of Diesel fuel form old tank to new tank. Exterior has failed on one of the diesel tanks and there is water in the interstitial space. (Note: Need to coordinate with station to have at lowest level possible.)

i) Dispose of residual fuel remaining in gasoline and diesel tank and water from tank’s interstitial space in one diesel tank.

j) Disconnect electrical to all tanks and salvage material that will be used with new tanks.

k) Recycle concrete and metal from Lube Cube tank and excess electrical from third tank.

l) Dispose of unrecyclable material from Lube Cube tank.

m) Provide Manifest or disposal tickets for hazardous material, recyclable material, and material that could not be recycled. Provide Type of Material, Amount (e.g., weight, volume), Transporter, Location Receiving Material, and Manifest or Disposal Ticket record.

B. Install Flameshield ® Tanks: Two (2) 500-gallon UL-142 listed, doubled walled steel tank for storage of (petroleum products at near atmospheric pressure manufactured by company who license their tanks through the Steel Tank Institute, and:

1. The tank system shall be warranted by the manufacturer against defects in material or workmanship following the delivery and installation of the tank. Warranties shall state the coverage period of tanks as part of the submission of bid.

2. Constructed with steel meeting ASTM A-36 U.L. Listed Steel Tank standards.

3. Tank(s) shall be designed for use aboveground and include integral secondary containment. The tank shall be a horizontal round steel tank with steel not less than 10 Gauge for interior and exterior tank.

4. The steel shell (encasement) must contain an interstice (space) for leak monitoring between it and a primary (internal) steel tank which must be constructed of not less than 10-gauge carbon steel with continuous weld along seams, and fitted with a steel fill tube not less than four (4)-inch inside diameter, and terminating not less than six (6) inches from the bottom of the steel tank to prevent static spray (the primary tank must meet UL Standard 142, 2-hour fire rating, NFPA Standard 30, and American Welding Society Standard for continuous welds).

5. All exterior surfaces of the steel tank must be effectively protected against corrosion and thermal extremes using a two-part system (urethane primer and urethane paint). All damage to the pant that occurs during installation shall be repaired using the same system.

6. The tank shall meet the 2-hour 2,000 ° F fire-test, as required by the Southwest Research Institute Standard SwRI 97-04, validates performance of non-insulated tanks.

7. Tanks shall be installed at least 3 feet from other tanks at location.

8. The 500-gallon tank shall be approximately 6’-0” long and 4’-0 high, having a gross weight of approximately 1,800 pounds.

9. Provide one (1) normal atmospheric or pressure/vacuum vent for the primary tank(s). Vents shall discharge upward or laterally and be protected from intrusion of rain.

10. Vents for tanks containing Class 1 liquids shall terminate at least 12 feet above ground level and be located at least five feet from building openings. (Note: 12-foot vent pipe on current tank can be reinstalled with a new vent installed.)

11. Provide one (1) Emergency Vent Provide emergency vent for each primary tank or primary tank compartment. Vent size shall be determined by the tank configuration, the primary tank capacity, and the product stored. Emergency venting shall comply with provisions of NFPA 30A or NFPA 30.

12. Provide one (1) emergency vent for each secondary containment tank interstice. The venting capacity is determined by the tank configuration, secondary tank capacity, and the product stored. Emergency venting shall comply with provisions of NFPA 30A, NFPA 30, and UL 142.

13. Leak Monitoring: A thru-tank leak detection monitoring tube with a glass sight tube terminating between the primary tank and the secondary containment shall be provided to monitor any leaks from the primary tank.

14. Spill/Overfill Containment: The tank system shall include a UL listed 7-gallon spill/overfill container manufactured as an integral part of the primary tank, surrounding the fill pipe, and protected by 2-hour fire rating of the enclosure. The spill/overfill container shall include a stick port and normally closed drain valve to release spilled product into the main tank. Exterior steel shall be anti-oxidant powder coated to inhibit rust. Overfill containment systems that are designed to release spilled product into the interstitial area will not be accepted.

15. Overfill Protection: Overfill protection shall be provided by the following methods: a) direct reading level gauge visible from fill pipe access; b) valve rated for pressurized delivery located within fill pipe to close automatically at 95% full level; or c) high level alarm.

16. The storage tank and supports shall be delivered as a complete UL listed unit. The steel outer shell shall be supported off the slab with saddles or runners integral with the shell and running the full width of the shell designed to support the tank in a Seismic Zone area of Zero (0). The saddles or runners shall provide not less than four (4)-inch clearance between the shell and slab. Welded joints are required.

17. The tank shall be protected from lightning strikes using zinc grounding rod, provided with cathodic protection if tank sits on concrete slab (must be 4 inches off slab),

18. The tank must be designed to be anchored to withstand uplifting by hurricanes, tornadoes, floods, or high-water surges.

19. All exterior steel appurtenances shall be coated to inhibit corrosion.

20. The fill tube must be equipped with a lockable cap.

21. Location, size, and number of ports and tank-top openings shall be carefully coordinated with the installer and tank manufacturer prior to ordering tank.

2.02 Tank Accessories

A. Site Preparation

1. The site has a concrete slab, and bollards already present at the Maintenance Shop site and ready for installation of tanks. The size of the slab is approximately 20' by 14’ feet.

B. Tanks shall be equipped with:

1. Neoprene bearing pad kit for tank,

2. A steel UL listed overflow containment basin surrounding the fill inlets manufactured for the primary tank, surrounding fill pipes, and protected by the two-hour fire rating of the enclosure. The overflow basins must have a capacity of not less than seven (7) gallons, and contain a stick port or normally closed valve to release spilled product into the main tank for overfill protection,

3. Overfill Protection requirement options: Note: If a regulated double-walled tank’s containment area is more permeable than 10-7 cm/sec, a high-level alarm or automatic shut-off device is required.

a) Fill limiter, overfill protection (shutoff) valve, rated to close and limit fill automatically at 95 percent level,

b) Audible overfill alarm or combination vent/overfill alarm to alert user when tank is near full, or

c) Clock-type visual level gauges for determining the level of liquid in each tank that is accessible to the delivery operator.

4. Vent package, with vent pipes, emergency vents, vent and fill caps, adaptors, gauge sticks. Terminate top of vent not less than 12 feet from grade (Note: 12 feet pipes currently on tanks can be reused.),

5. UL Listed fuel hoses and/or piping suitable for the stored product,

6. Where product piping extends below the top of the tank, the piping shall include a shut-off valve and normally-closed safety valve. The safety valve shall be an approved anti-siphon valve or electric solenoid to prevent siphoning or flow should fuel line break,

7. Placards and labels are to be placed on all tanks, all sides, and be impervious to tank contents, UV, and extreme weather exposure.

a. Gasoline - Tank #: AST # (submitted to MNEPA), Volume: 500 G, Content: Unleaded Gasoline, and Other Hazard Warnings: No Smoking, Flammable, NFPA placard (gasoline=:1,3,0).

b. Diesel – Tank #: AST # (submitted to MNEPA), Volume: 500 G, Content: Off-Road Diesel, and Other Hazard Warnings: No Smoking, Combustible, NFPA placard (diesel=: 0,2,0), and sulfur content sticker for 15 ppm or 500 ppm as required,

8. Galvanized steel stairs as supplied by tank manufacturer constructed with handrails, minimum 2’-6” wide, minimum 2’8” platform, with open serrated treads (stairs required for tanks equal or exceeding four (4) feet in height from base slab to fill inlet).

2.03

DISPENSING UNIT:

A. The system shall be equipped with a UL-listed, electrically-operated 15 gpm dispensing pump in an enclosed steel cabinet mounted on top of 1,000-gallon capacity tanks or less, and on the side of tanks greater than 1,000-gallon capacity, and using steel side mounting brackets provided and installed by the manufacturer.

B. Nozzles from which gasoline or methanol is introduced into motor vehicles shall have a maximum flow rate not to exceed 10 gallons per minute as may be controlled through any means in the pump/dispenser system. Any dispensing pump that is dedicated exclusively to heavy-duty vehicles, boats, or airplanes is exempt from this requirement.

d) Anti-spill valves - where product piping extends below the top of the tank, the piping shall include a shut-off valve and normally-closed safety valve. The safety valve shall be an approved anti-siphon valve or electric solenoid valve.

e) Either pump/dispenser must be installed on the side nearest the vehicles to be serviced. The pumping system shall include:

1. Filter – Filter shall be installed so when changed the liquid does not spill.

2. Hose (minimum 20 ft. Length) (must also be listed for the product dispensed)

3. Auto-shutoff nozzle

4. Hose Breakaway - Standard Break-Away designed to be replace when it fails.

5. Anti-siphon (back-flow) valve, or electric solenoid valve

6. Grounding feature

2.04 Miscellaneous Tank Accessories

A. Filters, fittings, fittings, strainers, valves, priming tees;

B. UL Listed piping and hoses listed for the product used;

C. Grounding system;

D. Other materials equipment, and appurtenances required for the proper installation of the fuel system for the above ground tank pump;

E. Electrical supply conforming to NFPA 70

F. 95 Gallon Spill Kits with UV Protection

PART 3 - EXECUTION

1.1 Contractor shall familiarize himself with the location of all public utility facilities and structures that may be found in the vicinity of the construction.

1.2 The Contractor shall conduct his operation to avoid damage to the utilities or structures. Should any damage occur due to the Contractor's operations, repairs shall be made at the Contractor's expense in a manner acceptable to the Contracting Officer and Project Leader.

1.3 Contractor shall provide all services and equipment to remove existing Convault and Cube Lube tanks, accessories, connections, piping, pumps and hoses. The station reserves the right of first refusal to take salvage pumps and/or parts. Note: The contractor will be required to remove all electrical back to the electrical box at the Agassiz NWR HQ Office location. All disposal, removal and transport of materials shall be in accordance with all local, state and federal regulations. Contractor shall coordinate delivery of the tank with station to ensure current tank is at the lowest level possible prior to installation of new tank. Contractor may need to transfer diesel fuel and gasoline from old tanks to new tanks. Contractor shall be responsible for removal and disposal of any remaining/ residual fuel in the tank. The interstitial space in one diesel fuel tank at the Maintenance Shop contains water. The contractor shall provide Manifest and Disposal Tickets for all material removed from site.

1.4 Manufacture of the new tank will have tanks license through the Steel Tank Institute, be experience in producing specified tank for commercial used or manufacturer must have certified ISO 9001 Quality System in place 60 days prior to award. Contractor performing installation must have documentation of at least 10 installations in satisfactory operation.

3.03 The contractor if not the manufacture shall install the tank, accessories and connections in strict accordance with the manufacturer’s recommendations, with latest edition of federal, state and local environmental, safety, and fire regulations; National Fire Protection Association Code and/or standards; federal, state and local electric and plumbing codes. Electrical work shall be performed under the direct supervision of a licensed electrician. All state and local permits shall be obtained prior to installation. Coordinate work and site visits as required with Station Manager and/or Contracting Officer Representative (COR).

3.04 The tank system shall be handled, lifted, stored in accordance with manufacture’s instruction onto a reinforced concrete base slab designed to support the fully loaded tank. Once the unit is set onto the pad, but before installation of accessories. The unit shall be tested by conducting an Air Pressure Test to ensure no damage occurred during shipping or handling. The results shall be provided to the Station Manager and/or Contracting Officer Representative (COR) prior to commencing additional work on tank.

3.05 Protective bollards are currently present and shall be protected by damage when removing and installing Above Ground Storage Tanks.

3.06 Tanks shall be marked on all sides with warning signs and product identification as required by applicable codes.

3.07 Ground the fuel tank in accordance with the general requirements of NFPA 780, Lighting Protection Code. Grounding rod shall be ¾” diameter, 10’-0” zinc grounding rod or equivalent approved rod. Position rod in close proximity to the tank vent pipe to accommodate a #4 single strand zinc wire clamped from vent pipe to ground rod or other approved site by manufacture. The wire and rod must be installed in a manner as to prevent tripping hazards.

3.08 The tank must be suitably anchored to withstand uplifting by hurricanes, tornadoes, floods, or high-water surges. The tank system shall be anchored per manufacture guidance to cement pad or by securing to the slab/ground with 3/8” 18-8 galvanized or stainless-steel cable secured to embedded eyebolts and maintained tightly with turnbuckles. Note: The area of the cable that comes in contact with the tank shall have insulation (e.g. neoprene pad) so as not to damage the tank.

3.09 Calibrate clock fuel gauges, provide water-resistant chart to station indicating gauge reading with calculated product level (e.g., 5’ = 500 gallons full).

3.10 Test the fuel storage and delivery systems to ensure the fuel is properly fed, leak free, and operates in a satisfactory manner. Repair and retest if necessary.

3.11 Connect emergency shut off switch located per code requirement and ensure previously installed switches meet the current requirement. Test and document emergency shut off system to document proper operation. Electrical work shall be in accordance with applicable codes and shall be rated for hazardous area as required.

3.12 Clean site of all materials and debris.

3.13 Complete Tank Notification using form AST Notification Form (t-a1-20a) Facilities with storage capacity less than 1 million gallons. This form needs to be completed for tanks that are removed and tanks that are installed. The following is the current list of tanks that have been registered with the state and their current status. Tanks 1 thru 5 will need the above paper work completed when removed:

3.14 Provide close out documentation to the Station Manager and/or Contracting Officer Representative (COR) with 2 sets in binders prior to final acceptance:

a) Specifications

b) As-Built Drawings and photographs

1) All underground system components

2) The complete tank system in place.

c) Installation information and operation and maintenance instruction, Inspection procedures on the system:

1) Tank

2) Tanks Accessories (e.g., tank gauge reading chart, vent, leak detection)

3) Pumps, [dispensers], valves and fittings,

d) All testing and inspection reports conducted during install,

e) Copy of Tank Notification using form AST Notification Form (t-a1-20a) for tanks removed and installed.

f) Manifest for solid waste removed, recycled materials, and disposal of residual fuels.

g) Warranties for tank and accessories.