Amendment 0006 - 33 56 19 - Q - RTA - Bolded-2.pdf

SECTION 33 56 19

FUEL IMPERMEABLE LINER SYSTEM

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C208 (2012; R 2017; E 2017; E 2019) Standard Specification for Cellulosic Fiber Insulating Board

ASTM C728 (2017a) Standard Specification for Perlite Thermal Insulation Board

ASTM C920 (2014a) Standard Specification for Elastomeric Joint Sealants

ASTM D2136 (2002; R 2012) Coated Fabrics - Low-Temperature Bend Test

ASTM D3776/D3776M (2009a; R 2017) Standard Test Methods for Mass Per Unit Area (Weight) of Fabric

ASTM D413 (1998; R 2013) Rubber Property - Adhesion to Flexible Substrate

ASTM D4437/D4437M (2016) Standard Practice for Non-destructive Testing (NDT) for Determining the Integrity of Seams Used in Joining Flexible Polymeric Sheet Geomembranes

ASTM D4533 (2011) Trapezoid Tearing Strength of Geotextiles

ASTM D4632/D4632M (2015a) Grab Breaking Load and Elongation of Geotextiles

ASTM D4833/D4833M (2007; E 2013; R 2013) Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products

ASTM D5199 (2012) Measuring Nominal Thickness of Geosynthetics

ASTM D5261 (2010) Measuring Mass Per Unit Area of Geotextiles

ASTM D5641/D5641M (2016) Standard Practice for Geomembrane

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Addendum 0003 Submittal September 09, 2020

Seam Evaluation by Vacuum Chamber

ASTM D5820 (1995; R 2011) Standard Practice for Pressurized Air Channel Evaluation of Dual Seamed Geomembranes

ASTM D5884/D5884M (2004a; R 2015; E 2015) Standard Test Method for Determining Tearing Strength of Internally Reinforced Geomembranes

ASTM D5893/D5893M (2016) Standard Specification for Cold Applied, Single Component, Chemically Curing Silicone Joint Sealant for Portland Cement Concrete Pavements

ASTM D6241 (2014) Standard Test Method for the Static Puncture Strength of Geotextiles and Geotextile-Related Products Using a 50-mm Probe

ASTM D696 (2016) Standard Test Method for Coefficient of Linear Thermal Expansion of Plastics Between -30 degrees C and 30 degrees C With a Vitreous Silica Dilatometer

ASTM D7238 (2006; R 2012) Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus

ASTM D751 (2006; R 2011) Coated Fabrics

ASTM E228 (2017) Standard Test Method for Linear Thermal Expansion of Solid Materials with a Push-Rod Dilatometer

ASTM E96/E96M (2016) Standard Test Methods for Water Vapor Transmission of Materials

ASTM G152 (2013) Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

ASTM G153 (2013) Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Installation ; G

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Liner Projections ; G

As-Built Drawings ; G

SD-03 Product Data

Fabric Reinforced Geomembrane Liner ; G

Nonwoven Geotextile ; G

Liner Fittings ; G

Embedment Strips ; G

Mounting Strip System ; G

Sealant ; G

Manufacturer's Warranty

Installer's Warranty

Protection Board ; G

SD-04 Samples

Destructive Field Seam Test Sample ; G

SD-05 Design Data

SD-06 Test Reports

Trial Seam Logs

Non-Destructive Field Seam

Destructive Field Seam

SD-07 Certificates

Field Engineer Qualifications

Installer Qualifications

Fabricator Certification

Liner Manufacturer's Certification

Surface Preparation

SD-08 Manufacturer's Instructions

Liner Manufacturer's Installation Instructions

SD-10 Operation and Maintenance Data

Geomembrane Liner ; G

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1.3 QUALITY ASSURANCE

1.3.1 Material and Equipment Qualifications

Provide materials and equipment that are standard products of a manufacturer regularly engaged in the manufacturing of such products, that are of a similar material, design and workmanship. Materials and equipment must have been in satisfactory commercial or industrial use for a minimum 2 years prior to bid opening. The 2 year period must include applications of the equipment and materials under similar circumstances and of similar size. Materials and equipment must have been for sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2 year period. Products having less than a 2 year field service record will be acceptable if a certified record of satisfactory field operation, for not less than 6000 hours, exclusive of the manufacturer's factory tests, can be shown.

1.3.2 Field Engineer Qualifications

Provide a field engineer who has successfully completed manufacturer's training on handling and installing of the fuel impermeable liner to be installed. Demonstrate that the engineer has at least one million square feet of liner installation experience. Submit a letter providing evidence of the field engineer's experience, training, and licensing. In regard to the field engineer's experience, include in the submittal a point of contact, a phone number, the address, the type of installation, and the current status of each installation mentioned.

1.3.3 Installer Qualifications

The installer is responsible for field handling, deploying, seaming, anchoring, and field Quality Control (QC) testing of the geomembrane.

Demonstrate that the installer has installed the proposed geomembrane material for at least 5 completed projects and a total minimum area of 1 million square feet . At least one seamer must have experience seaming a minimum of 500,000 square feet of the proposed geomembrane using the same type of seaming equipment and same geomembrane specified for this project.

1.3.4 Factory Seams

Where possible, use geomembrane factory fabricated to project specific panels in order to minimize field seams. Fabricator must conduct visual inspections on completed seams, as well as non-destructive and destructive testing to verify compliance with the seam strength requirements stated in Table 1. Provide fabricator certification of factory seams, including documentation of and results from quality control testing conducted.

1.3.5 Liner Manufacturer's Certification

Following the successful installation and testing of the liner, an authorized representative from the liner manufacturer must submit a letter certifying that the liner installation and testing results are satisfactory and that each meets the company's quality expectations and warranty. The letter must also certify that the liner installed is compatible with and recommend for use with the fuel to be stored. Include in the letter the representative's name, address, phone number, and qualifications for being a manufacturer's representative.

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1.4 DESIGN REQUIREMENTS

Provide certified engineering wind uplift calculations to determine required placement of permanent precast concrete pavers based upon the proposed liner and ballast materials.

1.5 DELIVERY, STORAGE, AND HANDLING

Handle, store, and protect equipment and materials to prevent damage before and during installation in accordance with the manufacturer's recommendations, and as approved by the Contracting Officer.

1.5.1 Delivery

The QC inspector must be present during delivery and unloading of the geomembrane. Label each geomembrane roll/panel with the manufacturer's name, product identification number, roll/panel number, and roll/panel dimensions.

1.5.2 Storage

Store geomembranes and geotextiles elevated off of the ground and covered to provide protection from precipitation, sunlight/ultraviolet light, puncture/abrasion, undesirable chemicals (as recommended by the manufacturer), and flames/welding sparks. Storage in temperatures between 32 degrees F and 160 degrees F , or as recommended by the manufacturer.

Storage must not result in crushing the core of roll goods or flattening of the rolls. Do not store rolls more than two high. Store palleted materials on level surfaces and not stacked on top of one another. Remove damaged geomembrane from the site and replace with geomembrane that meets the specified requirements.

1.5.3 Handling

Do not drag, lift by one end, or drop rolls and panels. Use a pipe or solid bar, of sufficient strength to support the full weight of a roll without significant bending but small enough to be easily inserted through the core of the roll, for all handling activities. Link the ends of the pipe or bar to the ends of a spreader bar with chains. Use a spreader bar wide enough to prevent the chains from rubbing against the ends of the roll. Alternatively, a stinger bar protruding from the end of a forklift or other equipment may be used. Use a stinger bar at least three-fourths the length of the core and capable of supporting the full weight of the roll without significant bending. If recommended by the manufacturer, a sling handling method utilizing appropriate loading straps may be used.

1.6 AMBIENT CONDITIONS

Do not deploy or field-seam geomembrane in the presence of excess moisture (i.e., rain, fog, dew), in areas of ponded water, or in the presence of winds above 12 mph . The relative humidity must be less than 80 percent, and temperature above the dew point. Unless authorized by the Contracting Officer, do not attempt placement or seaming at ambient temperatures below 40 degrees F or above 104 degrees F . Measure ambient temperature at a height no greater than 6 inches above the ground or geomembrane surface.

Seaming is only allowed below 40 degrees F if recommended by the geomembrane manufacturer and if destructive tests of trial seams at the proposed temperature meet the seam property requirements listed in Table 1.

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1.7 WARRANTY

State in the manufacturer's warranty that the installed geomembrane liner is warranted for 10 years against deterioration as installed for containment of the intended liquid. State in the installer's warranty that the geomembrane liner won't fail due to improper installation within 2 years.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Fabric Reinforced Geomembrane Liner

Provide a flexible, internally fabric reinforced geomembrane liner that is factory fabricated into widths that are designed to minimize field fabricated seams. Make factory seams with a 2 inch overlap plus or minus 1/4-inch . Provide liner that, as a minimum, meets the physical properties in Table 1. Include liner's routine maintenance requirements as well as procedures for liner repair and troubleshooting.

TABLE 1 - FABRIC REINFORCED GEOMEMBRANE PROPERTIES (ENGLISH)

PROPERTY TEST VALUE TEST METHOD

Overall Finished Thickness (minimum)

30 mils ASTM D751 or ASTM D5199

Base Fabric Material aramid fibre, polyester, or nylon

Base Fabric Weight (minimum)

7.5 oz/yd2 ASTM D3776/D3776M

Fabric Coating Adhesion (minimum)

15 lbf/inch ASTM D751 or ASTM D413

Tensile Strength, Grab (minimum)

600 lbf in both warp and fill directions

ASTM D751, Grab Test Method

Bursting Strength (minimum)

800 lbf ASTM D751, Ball Tip Method

Hydrostatic Resistance (minimum)

800 psi ASTM D751, Procedure A

Trapizoid Tearing Strength (minimum)

50 lbf in both the warp and fill directions

ASTM D4533 or ASTM D751, Trapazoidal Tear Method

Puncture Strength (minimum)

250 lbf ASTM D4833/D4833M

Tearing Resistance (minimum)

120 lbf ASTM D5884/D5884M

Low Temperature Bend (minimum)

-30 degrees F ASTM D2136

Vapor Transmission (maximum)

0.0119 oz/ft2 over 24 hours ASTM E96/E96M, Procedure BW, Inverted Water Method, using kerosene instead of water

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TABLE 1 - FABRIC REINFORCED GEOMEMBRANE PROPERTIES (ENGLISH)

PROPERTY TEST VALUE TEST METHOD

Coefficient of Thermal Expansion (maximum)

0.000021 in/in/degree F ASTM E228 or ASTM D696

Weathering Resistance No appreciable changes, stiffening or cracking of coating for a minimum of

8000 hours

ASTM G152 or ASTM G153

Bonded Seam Shear Strength(minimum)

525 lbf ASTM D751

Bonded Seam Peel Strength (minimum)

20 lbf ASTM D413

Dead Load Seam Shear Strength (minimum)

250 lbf at 70 degrees F;

125 lbf at 160 degrees F

ASTM D751

2.1.2 Nonwoven Geotextile

Provide a nonwoven, polypropylene, needle punched geotextile fabric.

Provide geotextile having the following physical properties as a minimum.

No substitute methods are allowed for verification of any property.

2.1.2.1 General Properties

Retard the growth of mildew and be compatible with the soil in contact.

2.1.2.2 Nominal Unit Weight

Provide a nominal unit weight of 12 oz/yd2 as measured in accordance with

ASTM D5261.

2.1.2.3 Grab Tensile Strength

Provide a minimum grab tensile strength of 300 lbf when tested in accordance with ASTM D4632/D4632M .

2.1.2.4 Grab Tensile Elongation

Provide a minimum grab tensile elongation of 50 percent when tested in accordance with ASTM D4632/D4632M .

2.1.2.5 Puncture Strength

Provide a minimum puncture strength of 140 lbf when tested in accordance with the pin strength methods of ASTM D4833/D4833M , or 800 lbf when tested in accordance with the CBR methods of ASTM D6241.

2.1.2.6 Trapezoid Tear Strength

Provide a minimum trapezoid tear strength of 115 lbf when tested in accordance with ASTM D4533.

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2.1.2.7 Ultraviolet (UV) Resistance

Maintain 70 percent of its original strength after 500 hours of testing in accordance with ASTM D7238.

2.2 ACCESSORIES

2.2.1 Liner Fittings

Provide liner fittings (for example, boots and sleeves) that are factory prefabricated components produced from the same manufacturer that produces the fuel impermeable liner and having the same fabrication characteristics as the liner.

2.2.2 Embedment Strip

Provide embedment strips for attachment to new cast-in-place concrete structures by the same manufacturer as the geomembrane, and made of the same materials as the geomembrane to be used or otherwise be certified by the manufacturer for use with the geomembrane.

2.2.3 Batten / Mounting Strip System

Provide minimum 1/4-inch thick by 2 inches wide stainless steel mounting strips. Provide pre-punched bolt holes in the strip at maximum 12 inches on center to accommodate the concrete anchor bolts.

2.2.3.1 Gasket

Provide a minimum 1/4-inch thick by 2-inches wide nitrile gasket on one or both sides of the geomembrane as recommended by the geomembrane manufacturer at mounting strip locations to seal and protect the geomembrane from the concrete and the mounting strip.

2.2.3.2 Concrete Anchor Bolts

Use minimum 3/8-inch diameter mechanical wedge-type concrete anchors, constructed of type 304 or 316 stainless steel. Provide nuts, washers, and other accessories of the same materials.

2.2.4 Sealant

Use sealant conforming to ASTM C920, Type S, Grade NS, Class 25 or better, or ASTM D5893/D5893M , Type NS, or other sealant recommended by the geomembrane manufacturer. Sealant used must be compatible with the material being stored, as recommended by the sealant manufacturer.

2.2.5 Protection Board

Wood Fiber Board, ASTM C208, or Perlite Board, ASTM C728.

2.3 EQUIPMENT

Utilize equipment in performance of the work in accordance with the geomembrane manufacturer's recommendations and maintain in satisfactory working condition.

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PART 3 EXECUTION

3.1 INSTALLATION

Make equipment/parts subject to degradation or requiring adjustment, inspection or repair accessible and capable of convenient removal. Prior to any fabrication or erection, submit detailed installation drawings that show the proposed panel layout of the liner for the containment basin . As a minimum, indicate the direction and location of factory and field fabricated seams, the termination of the panels at the perimeter, details and methods of sealing around penetrations, and any applicable site specific installation instructions.

3.1.1 Field Engineer

Provide a field engineer to supervise the complete installation of the liner and perform each liner inspection and test.

3.1.2 Surface Preparation

Surfaces to be covered must be free of vegetation, gravel, rocks, debris, etc., graded true, compacted, and be smooth with no abrupt projections.

Submit a signed letter from the field engineer, prior to placing any geotextile or liner, that states the subgrade and surface preparation were adequate and in accordance with the liner manufacturer's recommendations.

3.1.3 Embedment Strip Installation

Install embedment strips in new cast-in-place concrete structures using methods and materials recommended by the embedment strip/geomembrane manufacturer. Extrusion weld all joints and intersections of embedment material together or otherwise join as recommended by the manufacturer to provided a continuous surface for attachment of the geomembrane. Fill any holes through the face of the embed material resulting from the concrete forming or placement process with material recommended by the manufacturer.

3.1.4 Liner Installation

See paragraph AMBIENT CONDITIONS. Place the liner over the prepared surface in accordance with the liner manufacturer's installation instructions . The procedures and equipment used cannot elongate, wrinkle, scratch, or otherwise damage the geomembrane, geotextile, or the underlying subgrade. Place the liner in such a manner as to assure minimum handling and field seams. Use sand bags (or other manufacturer approved means) to hold the lining down in position during installation.

Do not drag or slide materials, equipment or other items across the surface of the liner at anytime. Do not allow personnel walking or working on the lining to damage it. Replace or repair geomembrane damaged during installation. Allow adequate slack in the geomembrane to prevent the creation of tensile stress and avoid "trampolining" or "bridging". Do not exceed a wrinkle height to width ratio of 0.5 for installed geomembrane. In addition, geomembrane wrinkles must not exceed 3 inches in height. Cut and repair wrinkles that do not meet the above criteria in accordance with paragraph REPAIRS.

3.1.4.1 Protection Boards

Protect dampproofed surfaces against which backfill will be placed with 1/2 inch thick wood fiberboard or perlite board. Install protection board

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Fuel Storage Replacement Quonset, ANG Rhode Island panels to closely fit around liner projections (for example, pipe penetrations, concrete foundations/pads, conduit penetrations, etc.).

Install and center manufacturer supplied sleeves/boots around liner projections in strict accordance with manufacturer's recommendations.

Compress the end of pipe sleeves to a pipe with a stainless steel band clamp assembly. For liner anchorage to new cast-in-place concrete, install an embedment strip in the concrete using methods and materials recommended by the embedment strip/geomembrane manufacturer.

3.2 FIELD SEAMING

3.2.1 Trial Seams

Make trial seams under field conditions on strips of excess geomembrane.

Make trial seams each day prior to production seaming, whenever there is a change in seaming personnel or seaming equipment settings, whenever environmental conditions change significantly (more than 25 degrees ), and at least once every four hours, by each seamer and each piece of seaming equipment used that day. Collect and test trial seam samples in accordance with ASTM D751 and ASTM D413 for fabric-reinforced liner .

Obtain one sample from each trial seam. This sample must be at least 18 inches long by 12 inches wide with the seam centered lengthwise. Cut ten random specimens from the sample, 1 inch wide. Field test five seam specimens for seam shear strength and field test 5 seam specimens for seam peel adhesion. To be acceptable, 4 out of 5 replicate test specimens must meet seam strength requirements specified in Table 1. If the field tests fail to meet these requirements, repeat the entire operation. If the additional trial seam fails, do not use the seaming apparatus or seamer until the deficiencies are corrected by the installer and 2 consecutive successful trial seams are achieved. Maintain logs of trial seams, which include date, time, weather, seaming personnel, seaming equipment, equipment settings, and trail seam field test results. Submit trial seam logs following the completion of installation.

3.2.2 Field Seams

Seam panels in accordance with the geomembrane manufacturer's recommendations. Comply with the geomembrane manufacturer's recommendation for the overlap between panels being seamed together; however, in no overlap less than 2 inches . In sumps, corners and odd-shaped geometric locations, minimize the number of field seams. Extend seaming to the outside edge of panels. Compact soft subgrades prior to seaming. Provide a clean and free of moisture, dust, dirt, debris, markings, and foreign material area at the time of seaming. Completely unroll and layout adjacent liner panels/sheets before performing field seam welds. Repair fish mouths in seams.

3.3 FIELD QUALITY CONTROL

3.3.1 Visual Inspection of Field Seams

Visually inspect each field seam to confirm that the seams are tightly bonded. Perform the inspection of a seam within 30 hours after the manufacturer's suggested application, curing, and cooling time. Repair and re-inspect seams found to be defective in accordance with manufacturer's recommendations.

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3.3.2 Non-Destructive Field Seam Testing

Perform non-destructive testing on all field seams over the full seam length and on any other areas showing damage or other distresses.

Allowable methods are stated below. Alternate methods approved by the geomembrane manufacturer may be submitted upon approval by the Contracting Officer. Submit non-destructive field seam test reports following the completion of installation and prior to covering the geomembrane liner.

3.3.2.1 Liner Vacuum Box Test

Perform a vacuum box test in accordance with ASTM D5641/D5641M on each field seam, the area around the seams, and each liner surface showing injury due to scuffing, penetration by foreign objects, or distress from rough subgrade. If the vacuum box test indicates a continuous stream of bubbles on repeated testing at the same location, then the area being tested is considered damaged and must be repaired and retested. Perform repairs in accordance with manufacturer's recommendations.

3.3.2.2 Liner Air Lance Test

Perform an air lance test on seams to detect an unbonded area in accordance with ASTM D4437/D4437M . Perform the test using a minimum 50 psig jet of air regulated and directed through a 3/16-inch diameter nozzle. Apply the jet of air to the lip of a seam in a near perpendicular direction to the length of the seam. Hold the nozzle a maximum of 2 inches from the seam and travel at a rate of not to exceed 40 fpm . Inflation of any section of the seam by the impinging air stream is indicative of an unbonded area. Repair unbonded areas in accordance with manufacturer's recommendations and retest.

3.3.2.3 Liner Air Pressure Test

Perform air pressure testing in accordance with ASTM D5820. Upon completion of the test, relieve pressure from the opposite end of the seam being tested to verify continuity of the seam.

3.3.2.4 Liner Point Stress Test

Where other non-destructive test methods are not possible, perform point stress testing in accordance with ASTM D4437/D4437M .

3.3.3 Destructive Field Seam Testing

Obtain a minimum of one destructive test sample per 500 feet of field seam at locations specified by the Contracting Officer. Recommended locations include the ends of seams or anchor trenches, so as to minimize the impact of required repairs to the geomembrane; however, final sample locations will be determined by the Contracting Officer. Sample locations will not be identified prior to seaming. Collect samples a minimum of 12 inches wide by 36 inches long with the seam centered lengthwise. C ut each sample into two equal pieces, with one piece retained by the installer for field testing and the remaining destructive field seam test sample given to the Contracting Officer for QA testing and/or permanent record. Number each sample and cross reference to a field log which identifies: (1) panel number; (2) seam number; (3) date and time cut; (4) ambient temperature within 6 inches above the geomembrane; (5) seaming unit designation; (6) name of seamer; and (7) seaming apparatus temperature and pressures (where applicable). Field test in accordance with ASTM D751 and

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ASTM D413 for fabric-reinforced liner . Cut ten 1 inch wide replicate specimens from the installer's sample. Test five specimens for shear strength and 5 for peel adhesion. Jaw separation speed must be in accordance with the approved QC manual. To be acceptable, 4 out of 5 replicate test specimens must meet the seam strength requirements specified in Table 1. If the field tests fail, repair the seam in accordance with paragraph REPAIRS. Repair holes for destructive seam samples the same day they are cut. Submit destructive field seam test reports following completion of installation and prior to covering the geomembrane liner.

3.4 REPAIRS

Patch damaged areas, destructive testing areas, or other areas requiring repair with the geomembrane material. Round the corners of the patch material and extend a minimum of 6 inches in each direction from the damaged area. Small holes or snags less than 1/4 inch in diameter may be repaired by extrusion welding where such process is approved by the geomembrane manufacturer.

3.5 SLIP RESISTANT WALKING SURFACE

Install slip resistant walking surface materials in the areas indicated .

3.6 PROJECT CLOSEOUT

Provide As-Built Drawings which show the as constructed panel layout, factory and field seam locations, penetrations, destructive field seam testing location, and repair locations. Provide operation and maintenance data package for the geomembrane liner to include material cut sheets, liner's routine maintenance requirements as well as procedures for liner repair and troubleshooting.

-- End of Section --

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2.3 EQUIPMENT

3.3.3 Destructive Field Seam Testing