B08 - 140P1221Q0054 - Scope of Work - Above Ground Fuel Storage Tank at GRSA.pdf

GREAT SAND DUNES

NATIONAL PARK

Above Ground Fuel Storage Tank Project

GRSA

PMIS NO. 308539

PROJECT SCOPE OF WORK

NATIONAL PARK SERVICE

INTERMOUNTAIN REGION

April 2021

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PMIS 308539/ Above Ground Fuel Storage Tank Project Great Sand Dunes National Park

PMIS 308539

1.0 Overview

The existing underground storage tanks fuel storage tanks (USTs) are double walled tanks (2,000 and 1,000 gallon), with a leak detection system (Veeder-root), and dated dispenser. In order to comply with new State of Colorado testing requirements, the spill buckets were tested. One of the spill buckets failed the test. Therefore, at this time the Park legally may not take delivery of fuel to this tank, and the nearest fueling station is a 1-hour round-trip drive away.

This situation has necessitated the need to replace the USTs with new above ground fuel storage tanks (ASTs) and pumps. A location has been chosen by the Park for the new dual compartment AST. The existing USTs will be removed and disposed of. The void left from the removal of the existing USTs will be filled with native backfill and paved over with asphalt. Accessibility, space, availability of power and a nearby computer with internet access are primary constraints.

2.0 Proposed Location

The project location is at Great Sand Dunes National Park, 11999 State Highway 150 Mosca, CO 81146. The specific Park location is the maintenance area, and the new tanks will be located on the North side of the facilities compound adjacent to the welding shop (outlined in blue). Existing USTs outlined in yellow.

Figure 1: Project Location.

Figure 2: Aerial view of site.

Figure 3: S View showing retaining wall to be moved.

Ex. USTs to be removed and disposed

New AST location

Welding shop

Wood retaining wall to be moved East

Figure 4: Existing USTs, shade structure, dispenser, fuel master system, concrete, risers, lids to be removed.

3.0 Scope

• Remove and dispose of existing unleaded and diesel UST’s, piping, and appurtenances, and fill void with native fill. Compact to 95% of maximum density, provide compacted roadway base layer, and re-pave with asphalt.

• Take samples of existing soil around USTs for fuel compounds such as benzene, toluene, ethylbenzene, and total xylenes (BTEX); total volatile petroleum hydrocarbons (TVPH) as gasoline, total extractable pertoleum hydrocarbons (TEPH) as diesel by EPA Method 8260B.

Submit test results to Contracting Officer and fotify Park if remedial actions are required.

• Remove existing fuel dispensers, bollards, and shade structure

• Contractor to prep site for new tanks, strip and grub, grade, compact, pour concrete pad

• Furnish and install new dual compartment (1,000 gallon unleaded, 500 gallon diesel) concrete

AST complete with all piping, vents, pump, conduit, level sensor, clock gauge, alarm, spill box, interstitial space monitoring, and all other appurtenances.

• Furnish and install bollards per NFPA code

• Furnish and install new pin code key system serving new AST

• Furnish and install shade structure over new AST to match the style of existing buildings in maintenance area

• Furnish and install emergency shutoff for gasoline tank

• Replace existing fuel management system with Veeder-root tank monitoring system

• Furnish fuel control panel to disconnect electrical circuits including neutral to gasoline equipment.

• Disconnect, remove, and install new conduits, electrical cabling, communication cabling, circuit breakers and associated electrical devices to enable connection to fuel dispensing equipment.

• Furnish trenching, backfilling, concrete saw cutting, and patching for electrical and fuel dispensing equipment installation.

• Move existing 36” high retaining wall back approximately 12’ to the east

• Furnish and install underground conduit for data cabling to be run around the rear of the welding shop to the FM computer room.

• New lines will be painted delineating clearance zones around tanks and equipment

• Park will contact San Louis Valley Power (SLV) to have power meter pedestal installed.

Contractor will furnish the underground feed to the new panel for the AST's and provide all materials for the project. The Fire Cache and the main panel at the FM building are both fed from the same pole where the new pedestal needs to be. To eliminate the aerial drop and the pole there needs to be a three or four meter pedestal placed by the SLV to accommodate the shop, cache, and new panel for the AST's. The main panel upgrade and underground feed from the new pedestal will be finished in house.

4.0 Definition of Contract Line Items

Contract Line Item No. 01 – Remove and Dispose of Existing Diesel and Unleaded USTs

1. This item consists of all work, materials, and labor necessary for:

a. The removal and disposal of the existing unleaded and diesel underground storage tanks and all appurtenances including the existing pump, piping, fittings, vents, gauges, level sensor, clock gauge alarm, piping, shade structure, dispensers, Fuel Master system.

Backfilling of void left by removal of the USTs, excavation, compaction, fill, sub-grade base, hot-mix asphalt, soil sampling, testing, and all other components stated or otherwise implied in the contract documents, drawings and specifications to complete the work as specified.

2. Measurement for payment will be by the lump sum.

3. Payment will be made at the contract lump sum price.

Contract Line Item No. 02 – Relocate Wooden Retaining Wall

1. This item consists of all work, materials, and labor necessary for:

a. The moving of the existing retaining wall, site prep, excavation, compaction, testing, and all other components stated or otherwise implied in the contract documents, drawings and specifications to complete the work as specified.

Contract Line Item No. 03 – Furnish Dual Compartment (1,000 Gallon Unleaded, 500 Gallon Diesel) Tank and Fuel System

1. This item consists of all work, materials, and labor necessary for:

a. Furnishing and installation of new dual compartment (1,000 gallon gasoline, 500 gallon diesel) concrete double walled tank, pump, piping, fittings, vents, gauges, level sensor, clock gauge alarm, spill box, ground level fill piping, vapor recovery piping, overflow prevention valve, anti-siphon valve, dust cap, dry disconnect adapter, drop pipes, diffuser, bollards, signs, fuel dispensers, new key card system, Veeder-root, shade structure, interstitial space monitoring, anchors, concrete pad, rebar, testing and all other components stated or otherwise implied in the contract documents, drawings and specifications to complete the work as specified.

b. Electrical: Disconnection of electrical from tank equipment to be removed, connection of electrical to furnished tank equipment, removing, relocation, and furnishing and installing gasoline system emergency shutoff, removing circuit breakers and modifying existing electrical panel circuits, furnishing and installing electrical connections, conduit, conductors, junction boxes, pull boxes, fuel control panel, circuit breakers, wireways, concrete saw cutting, concrete patching, utility trenching, backfill, compaction, testing, and all other components stated or otherwise implied in the contract documents, drawings and specifications to complete the work as specified.

5.0 Technical Details

1. Contractor to ensure all required components are present in the complete, code compliant fuel system.

2. Code Compliance: This project will install a complete fuel system that is compliant with NFPA 30, NFPA 30A, NFPA 70, NFPA 709, UL 2085, State of Colorado, Colorado Department of Labor and Employment Division of Oil and Public Safety, Local, Federal Regulations, and any other applicable code.

3. Concrete pad to be 8 inches thick. Rebar to be placed 12 inches on center, and be centered vertically in the concrete pad. Rebar to be #6 galvanized. See attached SECTION 033000 CAST IN PLACE CONCRETE for concrete specifications.

4. Vent piping that it is attached to or within a canopy or its supporting structure must extend a minimum of 5 ft (1.5 m) above the highest projection of the canopy, including the canopy fascia.

5. Tank: UL 2085, double-wall, horizontal, with primary- and secondary-containment walls and interstitial space. ConVault UL 2085/UL752 Tank System or approved equal.

a. Storage Type: Fabricated for storing motor gasoline (NFPA Classified Class IB combustible liquid) or diesel fuel (NFPA Classified Class II combustible liquid).

b. Tank to be dual compartment which includes a 1,000 gallon gasoline compartment and 500 gallon diesel compartment.

c. Tank to be grounded per manufacturer’s recommendation.

d. Color: White or Tan

6. The new tank shall include at a minimum the following components for each compartment (diesel and gasoline):

a. Overfill Containment/Remote Fill Container

b. Tank Fill Line

c. Vapor Recovery Line (gasoline tank only)

d. Overfill Prevention Valve

e. Fuel Pump

f. Fuel Dispenser

g. Anti-Siphon Valve and Conduit

h. Card Reader System (single system to serve both compartments)

i. Normal Vents

j. Emergency Vents

k. Electronic Monitoring and Liquid Level Gauge System

l. Interstitial Space Monitoring

m. Analog Tank Level Monitoring System

n. Emergency Stop (Gasoline tank only)

o. Bollards

p. Signage

7. Dispensing System Controller (DSC): Nema 4X Enclosure, Panel Mounted Emergency Stop

Control.

8. Electrical: Install electrical wiring, conduits, and grounding in accordance with NEC for Hazardous Locations. Connect conduits and wiring to the tank in accordance with NEC Class-1 Division 1. Temporarily connect electrical to existing electrical system for testing. After testing, disconnect electrical connection to existing electrical.

9. FUEL PUMP

a. Turbine style pressure pump mounted on tank to feed fuel dispenser

b. FE Petro STP75-VL2 or approved equal

c. Salient Characteristics:

i. HP: ¾ fixed speed

ii. Variable length

iii. Compatible with fuel mixtures:

1. Gasoline containing up to 10% ethanol,

2. Diesel fuels

3. 20% MTBE, 20% ETBE or 17% TAME with gasoline

iv. NFPA 30A compliant

10. FUEL DISPENSER

a. One sided-type dispenser, in compliance with NFPA 30A requirements

b. A listed emergency breakaway device designed to retain liquid on both sides of the breakaway point shall be installed on each hose dispensing Class I and II liquids. Such devices shall be installed and maintained in accordance with the manufacturer’s instructions

c. An automatic closing–type hose nozzle valve, with a latch-open device and listed and labeled in accordance with ANSI/UL 842, Standard for Valves for Flammable Fluids; or ANSI/ UL 2586, Standard for Hose Nozzle Valves, shall be provided on island-type dispensing devices used to dispense Class I or Class II liquids.

d. Fuel to be supplied from turbine style pressure pump

e. Flow rate set for gasoline dispenser: 10 GPM

f. Flow rate set for diesel dispenser: 20 GPM

g. Wayne 3/G7107D or approved equal

i. Salient Characteristics:

1. LCD Display: Backlit 1.5” seven-digit volume display and ½” four-character status display. Programmable for gallons or liters

2. Electrical: 120VAC 60Hz

3. Pressure: Working up to 50 psi

4. Pedestal-mount

5. Exterior Panel Material: Galvannealed steel

6. Inlet: 1 ½” female NPT

7. Outlet: 1” Female NPT with ¾” adapter

8. Hose Length: 10’

9. Filter: Strainer and external filter option

10. 400 series filter for gasoline dispenser

11. 800 series filter for diesel dispenser

12. Marked for fuel type

13. Anchored to concrete pad as per manufacturers recommendation

14. Flow limit set at 10 gpm via flow control valve

11. CARD READER SYSTEM

a. The fuel-control system shall consist of a fuel-site controller that governs system operation. It is a turnkey system that allows for immediate use after installation without any configuration changes. The default configuration allows for all purchased cards to be configured with unique PINs by the user on the first use of the card. After configuration of the card’s PIN, a second swipe of the card will provide access to authorized fuels dispensed by the system.

b. Petro Vend 100 or approved equal

12. ELECTRONIC MONITORING

a. Description: Calibrated liquid-level gage system complying with UL 1238 with probes or other sensors and remote annunciator panel.

b. Annunciator Panel: With visual and audible, high-tank-level and low-tank-level alarms;

fuel indicator with registration in gallons; and overfill alarm. Include gage volume range that covers fuel-oil storage capacity.

c. Veeder-Root TLS-4c or approved equal

i. Salient Characteristics:

1. UL Listed

2. Tank Quantity for Monitoring: 2

3. Inputs: 6

4. 7” Color LCD Display

5. Monitoring Capabilities: Reports, Alarms, Inventory, interstitial, power outage, email notification.

6. Report Storage: 3 years

7. Audible alarm

8. Temperature operating range: 32º to 109º F

9. Contractor to provide manufacturer recommended SD card

13. SIGNAGE

a. Place labels on the tank in accordance with NFPA codes.

b. Signage required to be mounted to front of fuel dispenser to be aluminum and have non-fade printing. Signage to be compliant with IFC 5703.5 Labeling and signage; 2305.6 Warning signs; 5003.5 Hazard identification signs:

c. Signs shall have white lettering on a red background and shall state: “DANGER –

d. FLAMMABLE LIQUIDS” for gasoline, and “DANGER – COMBUSTIBLE LIQUIDS” for diesel. Letters shall be not less than 3 inches in height and ½ inches in stroke.

e. Additional signage is required, and shall be conspicuously posted within sight of dispensers and fuel-dispensing areas as follows:

i. “ No smoking”

ii. “Shut off motor”

iii. “Discharge your static electricity before fueling by touching a metal surface away from the nozzle”

iv. “To prevent static discharge, do not reenter your vehicle while gasoline is pumping”

v. “If a fire starts, do not remove nozzle -back away immediately”

vi. “It is unlawful and dangerous to dispense gasoline into unapproved containers”

vii. “No filling of portable containers in or on a motor vehicle. Place container on ground before filling”

14. Test pump and alarm operation.

6.0 Submittals

1. Contractor to submit on a complete fuel system detailing the following:

a. Site plan showing tank, concrete pad extent, bollards placement, dispenser and key card placement, underground conduit location, electrical lines, control lines, dimensions showing offset from nearby building, emergency shut off location, any other dimensions required by code

b. Shade structure shop drawing

c. Concrete mix and rebar

d. Asphalt mix, tack coat, prime coat

e. Shop drawing of fuel tank with each required fuel system component clearly detailed, color of tank

f. Material cut sheets for piping, connections, elbows, end caps, supports, accessories, appurtenances etc.

7.0 Attachments

1. SECTION 033000 CAST IN PLACE CONCRETE

2. SECTION 321600 PAVEMENT AND WALKS