5- 15050-REV.doc

SECTION 15050 - GASOLINE BLENDING DISPENSING & UST SYSTEMS

Revised section

PART 1 - GENERAL

1.01

DESCRIPTION OF WORK

A.

Provide a complete gasoline fueling system, including but not limited to underground storage tanks, pipe chase, submersible turbine pumps, electrical wiring, electronic control/monitoring/leak detection system, Stage I vapor recovery systems, vent lines, fill risers, triple wall product piping, fittings, valves, caps, unions and necessary appurtenances, as specified, shown on the drawings, and as required for a complete and operating system. The complete fueling system shall include electrical controls (POS) system.

B.

The complete operational gasoline UG tanks and product piping system must be successfully tested, certified and registered. Contractor shall obtain and pay for all required testing, certifications and registrations.

C.

Provide complete retractable, double-wall product primary piping system, inside crush resistant UL approved access pipe and accessories as specified, shown on the drawings, and as required to prevent the possibility of contamination of air, soil, water, or groundwater.

D.

Install interconnecting devices and accessories as required for a complete and operating system.

E.

Provide submersible turbine fuel pumps including pump riser pipe as specified, shown on the drawings, and required for a complete and operating installation. Provide check valves, ball valves, metal flex connectors and shut-off (isolation) valves as required.

F.

Provide double wall underground fuel storage tanks including sealed turbine pump pipe chase/enclosures as specified, shown on the drawings, and required for a complete and operating system.

G.

Provide tank monitoring/inventory control/release detection system including console with alarm capability, automatic tank gauging equipment, electronic line leak detectors for primary piping of triple-walled product piping, sensors for all secondary containment (including tank, piping, pipe chase, etc.), an overfill alarm with acknowledgement switch, and accessories as specified, shown on the drawings, and required for a complete and operating system.

H. Provide the excavation, trenching, and backfilling required for installation of the fueling system.

I.

Contractor shall prepare and pay for all required State, County, and Local permits, applications and registrations or other documents required for the installation and operation of gasoline storage system. Coordinate the preparation and submission of documents with the COR.

J.

Coordinate installation construction with applicable sections within Division 16 - Electrical work.

K.

Related work specified elsewhere (as applicable to the project):

1.

Utility Excavating - Section 02222.

2.

Cast-in-Place Concrete - Section 03300.

3.

Mechanical Work - Division 15.

4.

Electrical work - Division 16.

L. Manufacturers' recommendations and/or requirements, if more stringent than the specifications and drawings, shall be followed at no additional cost to the Government. The most stringent requirements between the specifications and drawings shall be followed at no additional cost to the Government

1.02

QUALITY ASSURANCE

A.

Comply with the following codes and standards (use the most recent edition):

1.

NFPA No. 30, Flammable and Combustible Liquids Code.

2.

NFPA No. 30A, Automotive and Marine Service Station Code.

3.

NFPA No. 70, National Electrical Code

4.

NFPA No. 329, Handling Underground Release of Flammable and Combustible Liquids

5.

EPA 40 CFR Part 280, Technical Standards and Corrective Action Requirements for Contracting Officers and Operators of Underground Storage.

6.

OSHA 29 CFR Part 1910.106, Flammable and Combustible Liquids.

7.

ASTM D2310-80, Standard Classification for Machine-Made Reinforced Thermosetting-Resin Pipe.

8.

ASTM D2517-81, Standard Specification for Reinforced Epoxy Resin Gas Pressure Pipe and Fittings.

9.

ASTM D2996-88, Standard Specification for Filament-Wound "Fiberglass" (Glass Fiber-Reinforced Thermosetting Resin) Pipe.

10.

ASTM D4021-86, Standard Specification for Glass-Fiber-Reinforced Polyester Underground Petroleum Storage Tanks.

11.

UL 79, Power-Operated Pumps for Petroleum Product Dispensing Systems.

12.

UL 87, Power-Operated Dispensing Devices for Petroleum Products.

13.

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

14.

UL 842, Valves for Flammable Fluids.

15.

UL 860, Pipe Unions for Flammable and Combustible Fluids and Fire Protection Service.

16.

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

17.

UL 1316, Glass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum Products.

18.

API 1615 (1996) Installation of Underground Petroleum Storage Systems.

19.

API 1628 (1996) A Guide to the Assessment and Remediation of Underground Petroleum Releases (if a release is expected).

20.

California Air Resources Board (CARB) Executive Orders applicable to system.

21.

California Air Resources Board (CARB) Test Procedures applicable to system.

22.

PEI RP 100-97 Recommended Practices for Installation of Underground Storage Systems.

23. PEI RP 300-97 Recommended Practices for Installation and Testing of Vapor Recovery Systems at Vehicle Fueling Sites.

24. PEI/RPI 400-02 Recommended Procedure for Testing Electrical Continuity of Fuel-Dispensing Hanging Hardware.

25.

All other applicable ASTM and UL standards.

26.

All applicable EPA requirements relating to release detection, spill and overfill prevention, and corrosion protection.

27.

All other applicable Local, County, State, and Federal codes, standards, licensing and registration requirements.

B.

Contractor Experience and Licensing:

1. Contractor shall certify that he (or his installation sub-contractor) has at least four years experience installing underground gasoline storage tanks is certified by the State of Georgia as required. He shall also assure that the designed gasoline fuel system shall be installed by skilled workmen, licensed by the State of Georgia and certified by the equipment manufacturers. Contractor’s installer and electrician shall have prior experience with fuel systems and related equipment. As evidence of this experience, a list of the most recent two (2) fuel system installations performed by this contractor with complete descriptions of the location, the project name, and the equipment installed and date of project and all required certifications and licenses shall be submitted with bid.

2. Contractor Certification of Licensing and Experience. Contractor shall certify that he (or his installation subcontractor) is a certified installer and/or Authorized Service Contractor for the following equipment manufacturers, as applicable to the system being installed. Design basis for the project equipment is as follows:

a. Veeder-Root (for electronic tank monitoring / inventory control / release detection system) c.

Red Jacket (for submersible pumps) d.

OPW / PISCES (for product piping, covers, containers and sumps) e.

Modern welding Glasteel II (for double wall UG tanks) 3.

Contractor shall also certify that he (or his installation subcontractor) holds all necessary licenses for construction and installation required under this contract at the project location. These certifications shall be submitted in writing to the COR before construction begins.

C.

Detailed drawings of proposed departures due to actual field conditions or other causes shall be submitted to the Contracting Officer Representative (COR) for coordination of approval. The contractor shall carefully examine the drawings and shall be responsible for the proper fitting of materials and equipment without substantial alteration. Materials and equipment installed in the system shall be suitable for the pressures and temperatures expected to be encountered and suitable to the climate and environmental conditions of the location of the project.

D.

Contractor's responsibilities under this quality assurance section include, but are not limited to, the following:

1.

Receipt and storage of all items of equipment in a location protected from theft, vandalism, inclement weather, or other damage.

2.

Providing required interconnections to product pumps and emergency disconnect systems.

3.

Construction of openings, depressions, and sleeves for mechanical and electrical piping and conduit as required.

4.

Providing hardware and related items as required to assure that equipment components are properly mounted, securely anchored, adequately ventilated, or where required, are adequately sealed from vapors.

5.

Verifying size of components to assure space required for consoles and interconnecting devices does not exceed designated space available as indicated on drawings and as required.

6.

Determining if unusual conditions or circumstances exist at the site (or in the vicinity of the installation) which could damage the electronic components or circuitry, or otherwise impair the proper function of the system, and incorporating, in such event, the necessary protective devices into the installation.

7. Any modification shall be approved in writing from the equipment manufacturer before installation of that equipment.

1.03 SUBMITTALS:

A. Provide the following submittals as required by the contract or as directed by the Contracting Officer.

Inspector

Para #

Description

Date Required

Check Mark

1.03 F

Proposed Phase

30 days after NTP

1.03 L

Permits & Registrations

By Prefinal

1.03 M

As-Builts Hard, Soft Copies

14 days before prefinal

1.03 I

Testing Co.

21 days before work

1.03 J

O&M Manual

14 days before prefinal

1.03 G

Documentations

As Required

1.03B Shop Drawings

30 Days After NTP

1.03B, G Manufacturer’s Data

30 Days After NTP

1.07

Tank/Piping Warranty 14 days before prefinal

1.02 B

Experience Certification and Licensing With Bid

1.03 G.4

Engineer/Technician qualifications With Bid

Submit manufacturers’ catalog data and shop drawings for the following in accordance with Section 01300 requirements:

1.

Triple wall product piping and fittings

2.

Pipe chase/Pump Sumps

3.

Spill Containers

4.

Submersible fuel pumps

5.

Underground fuel storage tanks and all accessories

6. Tank monitoring / inventory control / release detection system

7. Electrical conduit routes

C. Certification: Each tank shall bear the U.L. listing mark for jacketed underground tank for flammable liquids storage.

D. Installation Instructions: Contractor shall submit tank manufacturer's current installation instructions.

E.

No work shall be performed without the shop drawing having been approved and signed by Contracting Officer or his designated agent and CECE supervisor.

F.

Contractor shall provide a proposed schedule of the phases of the work for the installation of the gasoline storage tanks, piping and dispensing systems.

G.

Underground fuel storage tank/product piping submittals shall include:

1.

Contractor shall submit six copies of shop drawings for tanks, submersible pumps, product piping and all accessories. Drawings shall include all critical dimensions and show locations of all fittings and accessories, i.e., pipe chase, man-ways, hold-down straps, shear valves (Emergency Shut-Off & Vapor Line Shear Valves), product piping, anchors, etc. All shop drawings shall be submitted at the same time. Also provide electronic copy (CADD drawings) of all the shop drawings for review and approval.

2.

Contractor shall submit six copies of equipment information from manufacturer's catalog data, installation instructions and calibration charts.

3. Two conversion charts shall be left with the Facilities Manager upon the completion of construction.

4. The shop drawings of the UG tanks, product piping, and associated accessories shall be prepared and stamped by a registered professional engineer experienced in retail gasoline dispensing in Georgia and the rules in NFPA connected with above and below ground tanks. Provide names, addresses, telephone numbers, and place of employment of the engineer and also, provide the names, addresses and telephone numbers of at least three customers for whom similar projects were designed in the last three years with bid.

5.

Four copies of a chronological Installation Report of the complete tank system installation construction documenting all major activities related to the installation of the underground storage tanks, piping, dispensing and release detection equipment shall be provided to COR. Contractor’s Installation Report shall include documentation of construction activities and photographs of the construction work in progress. Documentation of specific construction activities shall include, at a minimum the following:

Excavation of Tank Hole

Take soil samples & test for contamination Photographs

Installation Report Report shall include measured dimensions of the excavation and details about shoring and site conditions. Provide sheet piles/shoring

Installation Report Report shall include final measured dimensions of the excavation and details about preparation for tank placement.

(Pre-Installation) Statement of testing protocol with results of air testing (signed by tank contractor) Air test must be conducted at 3-5 PSI

(air gauge must be equipped with a pressure relief valve set at 5 PSI), and must follow manufacturer’s procedures

Tank & Line Tightness Tests

Stage I

(Training Documentation)

27.

Excavation of Tank Hole

Remove existing tanks, piping, contaminated soil

Take soil samples & test for contamination Photographs

Installation Report Report shall include measured dimensions of the excavation and details about shoring and site conditions.

H.

Contractor shall submit six copies of catalog data of submersible turbine pumps along with proper pump selection, performance chart, and installation, operation and service manuals.

I. Contractor shall provide for approval the name of the testing company he will use to perform pressure testing of tanks and piping, and startup compliance testing of the Vapor Recovery system per manufacturers' instruction and as specified in this specification. Contractor-retained testing company shall have a minimum of three years of experience in performing such tests for retail gasoline stations and shall be responsible for notifying COR of the schedule for testing, following proper testing protocol, and prompt notification of test results.

J.

Contractor shall provide six copies of an Operations and Maintenance (O&M) Manual. This manual will describe all systems and equipment installed by the contractor, including but not limited to: underground storage tanks, piping and distribution lines, tank monitoring and release detection systems, vapor recovery systems, and alarms. O&M Manual will list the manufacturers (including addresses and telephone numbers), make, model and serial numbers of all equipment and systems. Photocopies of equipment warranty registrations shall be included in the O&M Manual. The O&M Manual will be written in simple language and will give the operator information necessary to operate and maintain the system. Maintenance that is required but not normally performed by the operator will be so noted. The requirement for an O&M Manual may be met by compiling copies of materials provided by the manufacturers of the systems or equipment. However, if the manufacturer’s materials do not explain how the system or equipment works as installed, Contractor will provide necessary supplemental information. Provide beneficial occupancy letters.

K.

Six copies of the release detection system operation and maintenance manuals shall be provided as follows:

1.

The AAFES Service Station Manager.

2.

The Local General Manager.

3.

The Installation Environmental Office.

4.

Three copies to the COR for internal distribution.

L.

Copies of all documents, permits, applications and registrations required State, County, and Local shall be submitted to the AAFES and the COR in a report documenting details of the installation.

M.

GENERAL CONTRACTOR TO PROVIDE RECORD DRAWINGS in microstation V8 or Autocad 2007 or later version OF COMPLETE FUELING SYSTEM TO AAFES ENGINEER AND COR PRIOR TO TURNING OVER OF PROJECT.

1.04

UNATTENDED OPERATION

A.

Contractor is on notice that the facility to be constructed may be used for 24-hour unattended self-service operation if customer service conditions warrant and all appropriate approvals are obtained.

Contractor shall use best professional judgement to suggests any other items that may be required by law at the project site for unattended operation or that may facilitate safe and environmentally sound, unattended operation and should identify those items to the COR as soon as they are known.

1.05

DRAWINGS

A.

Because of the small scale of the drawings, it is not possible to indicate all offsets, fittings and accessories that may be required. The contractor shall carefully investigate the site and job conditions affecting all his work and shall arrange his work accordingly, furnishing such fittings, valves and accessories as may be required to meet such conditions, at no additional cost.

1.06

PROTECTION OF MATERIALS AND EQUIPMENT

A.

Pipe openings shall be closed and protected with caps or plugs (not tape) during installation. Equipment shall be tightly covered and protected against dirt, water, chemical or mechanical injury. Backfill material shall be kept clear of all trash and debris. Dispenser sump and tank sumps, pipe chase shall be closed or covered to prevent water and construction debris from accumulating within. Underground storage tanks and piping system shall be protected by barricades and construction fencing. Upon completion of all work, the materials and equipment shall be thoroughly cleaned, adjusted and operated. Belts, pulleys, gears, couplings, projecting setscrews, keys and other rotating parts shall be fully enclosed or properly guarded.

1.07

WARRANTIES

A.

Contractor shall warrant the work specified according to the terms of the General Provisions. In addition, upon acceptance of the gasoline dispensing system for beneficial use by AAFES, he shall provide to the COR the manufacturer's standard equipment warranty or warranties covering both parts and labor for a minimum period of one year. Warranty service shall be provided promptly upon request within 12 hours on weekdays and 24 hours on weekends. Contractor shall be responsible for the warranty of the equipment he furnished.

B. Fuel storage tanks shall carry a thirty-year warranty against failure from internal or external corrosion and from structural failure. Manufacturer’s installation checklist must be completed and submitted to the manufacturer by the Contractor in order to provide a valid warranty. A photocopy of this document shall be included in the O&M manual and also be provided to the COR.

C. Product piping, dispenser sumps and entry fittings, tank sumps, etc. shall carry a ten-year warranty against leaking, cracking and deterioration. Dispensers shall carry a two-year warranty. Deterioration of finish includes, but is not limited to, cracking, leaking and loss of coating integrity. Also, provide environmental insurance covering installation (Contactor’s Pollution Liability Insurance for up to the insure limit of $2,000,000) of entire product piping system and sumps. Manufacturer’s installation checklist must be completed and submitted to the manufacturer by the Contractor in order to provide a valid warranty. A photocopy of this document shall be included in the O&M manual and also be provided to the COR.

PART 2 - PRODUCTS

2.01

GENERAL

A.

Contractor shall provide all materials and equipment for this project. Equipment shall be the product of manufacturers regularly engaged in the manufacture of such products and shall be of the best quality used for the purpose in commercial practice. Each major component of equipment shall have the manufacturer's name, address and catalog number on a durable plate securely affixed in a conspicuous place. The nameplate of the distributing agent only will not be acceptable. Substitution of the specified equipment is acceptable upon review and approval by the Contracting Officer or his authorized agent. To obtain approval, Contractor shall make a written request to the COR. Contractor’s request will include or attach all data and information available on the equipment including warranties, guarantees, and UL certifications (if applicable).

2.02

PIPING, FITTINGS AND SPECIALTIES

A. All pipes, fittings, appurtenances, pipe chase, manways, accessories, and valves shall be provided by the Contractor after submittal to the Contracting Officer of shop drawings showing manufacturer and model number of each.

B.

All-metal flex connectors shall be used in all dispenser containment sumps, and be as shown in the drawings with all-metal tubes (no teflon), hose ends, galvanized malleable iron nipples at both ends affixed with crimped fittings, maximum overall length 24".

C.

Aboveground vent piping shall be schedule 40 galvanized steel pipe with 150 lb. malleable iron screw fittings and couplings. Joints shall be connected using appropriate adhesive/sealant compatible with gasoline, alcohol-gasoline blended, and reformulated fuels. Vents shall be a minimum of 12 feet above finished grade or 24 inches above the building exterior wall. Vents shall be mounted (as shown on the drawings) to the building exterior wall or braced to stainless steel or galvanized steel pole which shall extend to 12 inches below the top of the vent. Vents shall be primed and painted with two coats of rust inhibiting paint in a color that has been approved by COR and the installation.

D. Underground vent and vapor recovery piping shall be Underwriters Laboratory, Incorporated approved rigid fiberglass-reinforced plastic (FRP) pipe with molded fittings and adapters. Manufacturer for vent and vapor recovery piping is A.O. Smith Inland, Inc. “Red Thread II” or approved equal.

E. Provide no. 14 insulated tracer wire and additional 6 inch wide warning tape shall be installed 12 inched above the top of all underground piping to allow for verification of the piping location in the future. Fill piping and vapor recovery risers shall be schedule 40 galvanized steel piping. As a minimum, couplings and fittings should be 150-pound malleable iron. A thread sealant certified for petroleum service shall be used for all fittings. Sealants certified for methanol and other fuels (for example, ethanol and MTBE blends) should be used when these substances are to be placed in the UST system. Projects being built where there are containment requirements for fill risers shall comply with that requirement.

F.

Contractor shall provide Pisces tank sumps and manway covers as shown on the drawings. Each manway cover will be API color-coded with matching skirt, stabilizer kit and locking mechanism and identification. Lifting tools will be supplied for each manway and pipe chase by contractor. An FRP ID plate will be provided by the manufacturer for each manway and pipe chase. The ID plates will specify the tank number, tank capacity, and product type. The manway and pipe chase cover assembly shall be as shown on the drawings.

2.03 DOUBLE-WALL PRODUCT PIPING AND SECONDARY CONTAINMENT SYSTEM

(Triple wall pipe)

A.

All underground product piping shall be Pisces 2 inch triple wall pipe. Provide retractable, double-wall product primary piping system, installed inside crush resistant UL approved double wall corrugated access pipe and accessories

B.

Pisces containment pipe with Pisces pipe fittings. The piping installation shall strictly follow the recommended installation practices described by the manufacturer. Piping shall be continuous with connections occurring only within containment chambers which provide a means of surface access and is monitored for releases by a probe or sensor that will alarm if a release is detected. The secondary containment pipe shall contain product leaked from the product pipe and drain to the sealed pump manway enclosure for leak detection and recovery of the released product.

1. The primary piping shall be capable of successfully passing an air pressure test at sixty pounds per square inch after bleed back pressure stabilization, which shall be established by bringing the line pressure to sixty pounds per square inch for a minimum of three hours. During the pressurizing period all fittings shall be observed for leaks by applying a soapy water solution. The secondary piping shall be capable of maintaining ten pounds per square inch for a one hour period during integrity testing.

2. The contractor shall follow the manufacturer’s recommendation that after the primary piping has passed a 60 psig pressure test, the product line pressure shall be reduced and maintained at a pressure of 25 psig until all paving has been completed, with OPW pressure gauge assemblies in place on each line for daily observation and verification that the pipe is holding pressure.

3. Pressure gauge assemblies for testing shall be calibrated prior to use and be equipped with the proper pressure safety valve as recommended by piping manufacturer’s testing procedures.

C.

Termination of product lines shall be within containment sumps with proper sealing of the ends to prevent water, liquid and debris from entering the sumps.

D.

All containment sumps shall be tested by means of a water test conducted to ensure that the sumps are liquid tight.

2.04

ELECTRONIC FUEL DISPENSING SYSTEM:

A. Provide all devices and wiring and programming as required to interface the existing dispensers with the new electronic monitoring/detection system. Additional information can be obtained by contacting AAFES (POC is Chris Holifield, at (478) 922-2927)).

B. The existing dispensers is Dresser Wayne Item # B12/3220D1/JK

Ovation Dispenser 48" blend, 3 grade, single hose per side with internal vapor ready, card reader (for friendly credit and debit card use), animated graphic display, canopy and speaker (to be verified by contractor).

2.05

SUBMERSIBLE TURBINE PUMPS

A.

Pumps shall have an explosion-proof motor that is electrically compatible with the local power service and shall carry UL listing. Pumps shall have standard 4" NPT tank fitting. Upper assembly shall contain all functional elements, check valve, air eliminator, expansion relief valve, siphon nozzle and venturi, siphon check valve and pressure test screw. The entire assembly shall be removable. The pump shall have a thermal overcurrent overload protector with automatic reset. Capacitors and electric disconnect shall be accessible. Lower assembly shall consist of permanent split-phase capacitor motor, 25% glass-filled "Celcon" impeller and diffuser. Impeller shall be hydraulically balanced providing a positive and evenly distributed drive. The pumps shall be designed or equipped so that no part of the system shall be subjected to pressure above its allowable working pressure. Pumps shall be designed for Class 1, Division 1, Group D atmosphere. Pump shall be cooled and lubricated by discharging the pumped fluid into the storage tank regardless of dispensed quantity. An isolation valve (ball valve) shall be installed in an assembly connecting the pump to the product line to facilitate isolation of the product line during tightness testing. The contractor shall size the pumps for 8 to 10.0 gallons per minute flow rate at the nozzles. The pump shall be sized to provide minimum flow rate not less than 7 gallons per minute at the nozzle. Maximum flow rate at the nozzle shall not exceed 10 gallons per minute.

B.

Manufacturer of Pumps: Design basis is Red Jacket 2 HP submersible pump which shall be verified and recalculated by the pump manufacturer’s certified engineer.

2.06

UNDERGROUND FUEL STORAGE TANKS

A. Governing Standards

1. U.L. 58, Underwriters Laboratories, Inc., Steel Underground Tanks for Flammable and Combustible Liquids.

2. U.L. 1746, Underwriters Laboratories, Inc., Corrosion Protection Systems for Underground Storage Tanks.

3. NFPA 30 and 30A, National Fire Protection Association Flammable and Combustible Code.

4. Uniform Fire Code, International Fire Code Institute.

5. B.O.C.A., National Fire Prevention Code

6. PEI/RP-100 Petroleum Equipment Institute, Recommended Practices for Installation of Underground Liquid Storage Systems B.

Loading Conditions: Tank shall meet the following design criteria:

1.

External hydrostatic pressure: Fuel storage tanks shall be capable of withstanding a maximum 7 feet of over-burden over the top of the tank with the tank hole excavation fully flooded with a 5 to 1 safety factor against buckling.

2.

Surface Loads: When installed according to manufacturer’s installation instructions, tank will withstand surface AASHTO H-20 axle loads.

(32,000 lbs/axle).

3.

Internal Load: Primary tank shall withstand an air pressure test of 3-5 psi. Secondary tank shall be vacuum tested. Do not apply positive pressure.

4.

Tanks shall be designed to support accessory equipment such as such as ladders, submerged pumps, containment sumps, automatic tank gauge, drop tubes, etc., when installed according to the manufacturers’ recommendations and limitations.

5. Tanks shall be designed in such a manner to provide for monitoring of the interstice. Contractor shall provide complete monitoring system of the tank interstice as required and as approved by the COR.

6. Primary tank shall be designed per Underwriters Laboratories, Inc. UL-58 / UL-1746 part 3 standard.

B.

Product Storage Requirements:

1. Tanks shall be capable of storing liquids with specific gravity up to 1.1.

2. Tanks are designed for operation at atmospheric pressure only. All primary tanks shall be vented.

3. Tanks shall be capable of storing gasoline, gasohol, jet fuel, avgas, diesel fuel or methanol at ambient underground temperature or used for fuel oil at temperatures not to exceed 120 degrees Fahrenheit.

4. The interstice shall be monitored.

5. Tanks shall be chemically compatible with the substance to be stored.

6. Interior Painting and Coating shall be provided if recommended by the manufacturer for the stored product.

C.

Dimensional Requirements:

1. The gasoline tanks shall have nominal capacities of 15,000 gallons each.

D.

Each tank shall be equipped with a manway with UL approved gasket, bolts, & steel cover and with four 4" tank mounted NPT pipe fittings. Manway cover shall have three 4" NPT in line fittings welded in place on center line of cover, spaced 8 inches center to center. Manway cover shall be liquid tight. Each tank shall have a containment collar around manway.

E.

Materials: FRP Jacketed Steel Underground Storage Tank. Jacketed Secondary Containment – A steel tank with a nonmetallic external jacket constructed of fiberglass and polyester resin. The primary tank and FRP jacket are separated by an interstitial space with the jacket acting as the secondary containment and corrosion barrier. Secondary jacket allows for interstitial monitoring capabilities. Glasteel tank shall be built to Underwriters Laboratories specification standard UL-58 and UL-1746 part III. Glasteel tank is atmospheric steel tanks intended for storage underground of flammable and combustible liquids.

F.

Certification Plate:

1.

Certification Plate: Underwriters Laboratories, Inc. Listing Mark for jacketed underground tank for flammable liquids storage.

G.

NPT Fittings:

1. All threaded fittings shall be of a material of construction consistent with the requirements of the Underwriters Laboratories listing. All fittings shall be protected using threaded plugs or suitable covers.

2.

Standard fittings shall be 4" NPT forged steel weld flanges. Reducers shall be used for smaller sizes where specified and shall be provided by the contractor.

3.

Thread Standards: All threaded fittings shall have machine tolerances in accordance with the ANSI standard for each fitting size.

4.

Strength: NPT fittings shall withstand a minimum of 150-foot/pounds of torque and 1,000 foot/pounds of bending, both with 2 to 1 factor of safety.

5. Interstitial monitoring shall be accomplished using the 2" threaded access tube.

6. Location: Contractor shall provide shop drawings to show locations of all fittings.

J.

Lifting Lugs:

1.

Provide lifting lugs on all tanks. Lugs shall be capable of withstanding weight of tank with a safety factor of 3-to-1.

K.

Deflector Gauge:

1.

Tank bottom deflector gauge plates shall be provided under all primary tank fittings to prevent tank damage.

L.

Containment Collar:

1.

Provide containment collar around the tank manway/pipe chase. Also, collars shall be used to provide secondary containment for the piping connections at the tank.

M.

Manufacturer of Tanks:

1. Design basis is Modern Welding Glasteel II double wall tank N. A manufacturer’s certified tank service representative shall be on-site to review and assist the contractor during installation of each tank. The general contractor shall be responsible for providing knowledgeable tank equipment installers. The contractor shall provide a written letter from the manufacturer stating that installation was done in accordance with and approved by the manufacturer.

O. Anchor Straps: If required, provide flat carbon steel anchor straps or other approved anchoring material as recommended by the tank manufacturer for each tank. The number, size and location shall be as recommended by the tank manufacturer. A suitable dielectric material shall be placed between the steel strap and tank at time of installation.

2.07

TANK INVENTORY CONTROL AND RELEASE DETECTION SYSTEM

A. Replace existing Veeder-Root model TLS-350R with new Veeder-Root model TLS 450 to provide Continuous Statistical Leak Detection (CSLD) UST monitoring system, to include additional hardware and software as needed. The new Veeder-Root system consists of tank inventory control, release detection system (for monitoring of the tank interstice, piping, pipe chase, nozzles, and all dispensers and sumps monitoring capabilities, etc.), control console, integral printer, tank probes, sump sensors, fittings, audio and visual alarms, all new wiring and conduit, etc., for a complete and fully operating system as approved by the COR.

B.

Provide new tank monitor and inventory control Veeder-Root system with new tanks and piping and provide new devices as required:

1.

New Inventory Probe: Veeder-Root Series 847390-107-MAG1 magnetostrictive probe.

2.

New Containment Sump Sensor: Veeder-Root Series 794380-352 dual-float, discriminating sensor.

3.

New Line leak detectors: Complete assemblies for detecting leaks in product piping, Veeder-Root Series 848480-001 for Red Jacket Pumps connected to controller in the building.

4.

New Hydrostatic Reservoir Sensor (dual-float): Veeder-Root Series 794380-302 to be incorporated into the integral tank reservoir or as recommended by the manufacturer.

5.

New Dispenser Sump Sensor: Veeder-Root Series 794380-322 dual-float, discriminating sensor.

6.

New Overfill Alarm and Acknowledgement Switch: Veeder-Root Series 790091-001 for the alarm and Series 790095-001 for the acknowledgement switch.

7. The manufacturer model number design basis for the equipment, piping, control system and devices, etc. as indicated on the project drawings and specifications was available during the design of this project. However, this project was on the shelf for sometime and is now approved for funding, the specified equipment, piping, control devices, etc. may not be available or may not be the latest or current manufacturer models on the market. The contractor must verify the availability of all the equipment and piping prior to the submitting of the proposed bid and provide the latest and the most current equipment, piping, control devices, etc. for this project.

2.08

TANK AND PIPING SUMPS

A.

The contractor shall furnish and install pump and piping chase, sump/enclosure as shown on the drawings and/or as required. Depending upon the burial depth of the tanks, the contractor shall furnish and install the appropriate pipe chase with the required extension as directed by the manufacturer. Depending on the presence of high groundwater, the contractor shall ensure the selection of a pipe chase/sump that is designed for keeping water out of the pipe chase/sumps under such high groundwater conditions. The contractor shall furnish and install tank pipe chase/sump accessories including, but not limited to, manway adapter kit, tank fitting adapters, collar adapter kit, pipe chase/sump access covers, and flexible entry boots for pipe chase/sump as manufactured and designed by the piping manufacturer selected.

The pipe chase/sumps and accessories shall be chemically comparable with products to be stored (gasoline, gasoline with 9.5% oxinol, gasoline with 5% methanol and cosolvent, gasoline with 10% ethanol, and gasoline with 20% MTBE).

C.

All joints, connections, covers, pipe and conduit entries (including angular entries) shall be liquid-tight.

D.

Pipe chase/Sumps shall not be deformed by backfill pressure or backfilling operations.

PART 3 - EXECUTION

3.01

INSTALLATION OF FLEXIBLE PIPING

A.

Materials will be observed for signs of damage and to confirm compliance with specifications. Storage and handling, stringing, joining, layout and preparation for installation, cutting, tapering, bonding, curing, adapters to steel piping or flexible connectors shall be in accordance with manufacturer's instructions. Contractor must be familiar with pertinent manufacturer’s recommended installation practices and testing procedures and adhere to them. Contractor shall resolve any conflict between contract documents and manufacturers instruction prior to installing equipment or piping, and no later than prior to backfilling.

B.

All unconnected pipe stubs or runs shall be protected during construction against the intrusion of dirt or other foreign material into the piping system. Protective caps used in shipping the pipe are suitable if taped securely in place.

C.

Based on criteria available from manufacturer, contractor shall follow allowable minimum bending radii for pipe.

3.02

INSTALLATION OF TRIPLE-WALL PIPING SYSTEM WITH SECONDARY CONTAINMENT

A.

The Contractor shall install the triple-wall piping system in strict accordance with manufacturer's recommended installation practices and instructions. Particular attention will be paid to connection of fittings according to manufacturer’s specifications. If the piping manufacturer specifies the use of particular tools to avoid over-tightening of fittings and damage to O-rings, contractor shall obtain and use recommended tools.

B.

The interstitial space of the triple-wall product line shall be air tested at the pressure recommended by the manufacturer and not to exceed 10 psig and the primary product line shall be tested at 1-1/2 times the operating pressure. The test pressure shall be held for one hour. The contractor shall conduct at least two tests, one at the time of installation, and the other during system startup. The Contractor shall furnish written reports of the test results to the COR.

3.03

INSTALLATION OF ALL-METAL FLEXIBLE CONNECTORS

A.

All-Metal flexible connectors (flex connectors) shall be installed as required.

B.

Flexible connectors shall be installed so that there is no radial stress or twist in the hose when joints are assembled. Follow manufacturer’s installation instructions.

C.

Flex connectors shall be UL-listed for such application and meet the requirements of NFPA 30A for being fire-safe. Teflon-lined flex connectors will not be permitted.

3.04

SLOPING OF VENT LINES PIPING

A.

A minimum slope of 1/8" per foot (sloping downward toward the tanks) is required for all underground vent piping. No less than this minimum slope shall be used within requirements for cover over piping and depth of tanks. Only rigid FRP piping compatible with the fuel stored shall be permitted for vent and vapor return piping. Pipe cover requirements are detailed on the drawings. Piping shall be installed on pre-graded compacted bed material. No support or spacing material other than the bed and backfill will be left in contact with the piping. This method of installation should prevent the possibility of any sags or sumps which might cause a liquid trap in the lines and which will not be permitted.

3.05

INSTALLATION OF TANK FITTINGS, MANWAYS AND APPURTENANCES

A.

Requirements for Tank Fittings, Pipe chase/Manways, and Appurtenances:

1.

Contractor shall be responsible to provide proper clearance between tank shell and submerged pumps or fill tubes. Contractor shall check the tank diameter at the pump and fill pipe opening and make necessary adjustments to maintain the specified minimum clearance of six inches from the bottom of the tank.

2.

When installing spill containment basins at the fill points and Stage I vapor recovery adapters, contractor shall provide a minimum of 3" and a maximum of 6" clearance between the top of the cap and bottom of the pipe chase/manway cover. Proper clearance shall be provided between the top of the automatic tank gauge and its cover.

3.

Pump and fill manways and/or connecting piping shall be self-supporting and shall not contact the tank. No spacing materials shall be allowed on the top of the tank.

4.

All pipe chase/manway covers and lids will be API color-coded according to the following: Regular unleaded covers will be white with a black cross, mid-grade unleaded covers will be blue with a white cross, and high-grade (premium) will be red with a white cross. Vapor Recovery covers will be orange. Observation well covers will be white with a black triangle.

3.06

TRENCHING AND PIPE CHASES

A.

Pipe trenches must be large enough to accommodate the piping, together with sufficient spacing and backfill material to provide protection from damage that might be caused by settlement, abrasion, vibration, expansion, contraction, or foreign materials. Trenching width shall be sufficient to maintain the clearance between the pipes and side walls as shown on the drawings and of a depth sufficient to provide the proper bed and cover, and pitch of the lines. Note that the minimum cover to finish grade over product lines in paved areas is 12 inches and 18 inches in non-paved areas. Pipe chase in the concrete or asphalt paving shall be constructed as detailed on the drawings and as located on the plot plan. The minimum spacing between adjacent pipes is twice the pipe diameter between pipes; however, piping runs shall not be layered. Piping crossover must be minimized, but where piping runs must cross, the manufacturer's crossover fittings shall be used. Piping will be installed in a manner that will facilitate testing, resist corrosion, and prevent damage and movement of system components.

3.07

BEDDING AND BACKFILL MATERIAL

A.

Crusher Run: Standard bedding and backfill material shall be a naturally-rounded aggregate, clean and free flowing, with particle size not less than 1/8" or more than 1/2" in diameter. The crusher run sieve analysis shall be furnished to the Contracting Officer by the contractor from the supplier. Contractor shall comply with the manufacturer’s recommendations on bedding and backfill material for all underground equipment and underground piping at no additional cost to the Government.

B.

Storage and Handling of Bed/Backfill Material on Site:

1.

Contractor shall store these materials so as not to allow bed/backfill material to intermix with any excavated soil or other material on site. Contamination of self-compacting gravel could result in need for mechanical compaction, as the minimum/maximum particle sizes specified are critical for self-compaction.

2.

In freezing conditions, material must be kept dry and free of ice.

3.

Do not intermix gravel, stone or gravel crushing, or sand in the same excavation or connected excavations.

C.

Poor Soil Conditions/Soils Stabilization and Filter Fabric:

1.

Where soils of low bearing capacity are found such as plastic clays or where sand/sand-gravel may be of a free-flowing nature, a separation is necessary between the crusher run backfill and the soil to prevent penetration or migration. The separation shall be accomplished by utilizing an inert filter fabric, as per manufacturer's recommendations.

1. Approved manufacturers are:

a.

DuPont "Typar" Style 3401 - 4 oz./Sq. Yd.

b.

Monsanto "Bidim" C-22 - 4 oz./Sq. Yd.

c.

Phillips "Supac" Fabric - 4.1 oz./Sq. Yd.

d.

Celanese "Mirafi" 140 Fabric - 4.1 oz./Sq. Yd.

3.

Material shall be cut to an appropriate width for the depth and width of the excavation so that there is sufficient material to overlay the top edges of the excavation during installation. Laps of material along the excavation should be a minimum of 2 feet.

D.

Bedding of Product Lines: A minimum of six inches deep compacted bed, graded to give the proper slope of depth of pipe runs, shall be laid in the trench before pipe runs are installed. Pipe runs shall be fabricated at grade and installed and properly spaced on the completed bed. After making necessary connections of runs, branches or fittings which shall be made up in the trench, bed material should be placed back under the piping and properly compacted.

3.08

BACKFILLING OF PIPING

A.

After satisfactory completion of required testing and observation of piping, backfilling of trenches to subgrade elevation shall be completed. A minimum of six inches of backfill shall be bedded under the piping and minimum of 18 inches of combined cover (including surface paving and backfill material) over the piping is required. Ensure that marking tape or wire (for future location of piping) has been placed in the backfill at this time. Provide compaction as specified in section 02222.

3.09

INSTALLATION OF PUMPS

A.

Pumps shall be installed in accordance with manufacturer’s instructions. Installer shall be familiar with such practices and procedures and shall strictly follow the same during installation.

B.

Contractor shall measure the diameter of each tank at each 4" NPT tank fitting.

C.

Contractor shall verify length of submersible pump. In any case, there shall be minimum 6" clearance between the tank and the bottom of the pump.

D.

Pump shall be installed in 4" tank opening with approved non-setting thread sealant. Sealant shall be compatible/suitable for use with product being stored in the tank.

E.

4" riser pipe shall be tightened and pump shall be lined up with discharge outlet and fuel lines.

F.

Electrical connections shall be made with approved fittings to junction box. Install ground wire using standard color codes.

G.

Submersible pumps shall not be wired to run continuously.

H.

Submersible pumps shall never be used to pump water from the tank.

3.10

INSTALLATION OF UNDERGROUND TANKS

A.

Tanks shall be installed in accordance with the manufacturer’s instructions. Only crusher run not less than 1/8" or more than 1/2" shall be used. Proper burial depth shall be determined by a float-out calculation and shall allow for sloping the piping from the dispensers back to the tanks (minimum depth is 36 inches and maximum depth is 7 feet). Anchoring and tank spacing shall be provided as required. If there is any conflict between the procedures provided in the specification and manufacturer's instructions, contractor shall comply with the manufacturer's instructions.

B.

During construction and prior to final acceptance, all installed tanks shall be ballasted as required per manufacturer's recommendations. Upon acceptance by COR, contractor shall empty the tanks for product fill, disposing of the ballast material in an environmentally safe manner.

C. Tanks shall be installed in strict accordance with the most recent installation instructions provided by the tank manufacturer, NFPA, UFC, PEI/RP100, local ordinance or other applicable codes.

D. Testing

1. The tanks shall be delivered to jobsite with a vacuum of at least 5.3 inches Hg on the…