VOLUSIA COUNTY HDPE GEOMEMBRANE LINER

SOUTHEAST EXPANSION AREA 02776-1 3/23/2026

SECTION 02776

HDPE GEOMEMBRANE LINER

PART 1 - GENERAL

1.1 DESCRIPTION

A. The WORK specified in this Section includes the manufacture, fabrication, testing, and installation of 60 mil Textured HDPE Geomembrane Liner and 80 mil Textured HDPE Geomembrane Liner (textured on both sides). The CONTRACTOR shall furnish all materials, labor, supervision, administration, management, Construction Quality Control (CQC), and equipment necessary for unloading, on-site handling, storage, installation, seaming, repairing, and CQC testing of 60 mil Textured HDPE Geomembrane Liner and of 80 mil Textured HDPE Geomembrane Liner (textured on both sides) as part of the PROJECT as shown on the CONTRACT DRAWINGS and as specified herein.

B. All materials shall conform to the requirements of this Section and shall be of new stock of the highest grade available, free from defects, and recently manufactured.

C. All WORK shall be performed in strict accordance with the SPECIFICATIONS, CONTRACT DRAWINGS, conformance with the MANUFACTURER’S recommendations, and with current industry standards.

D. Quality Control (QC) testing specified in this Section is the CONTRACTOR'S responsibility and all costs shall be included in the Bid Price. The OWNER is responsible for the Quality Assurance (QA) testing.

E. Throughout this Section, all references to CQA CONSULTANT and the requirement to submit a final report, signed and sealed by a professional engineer, shall mean a professional engineer licensed in the State of Florida.

F. Throughout this Section, all references to “SURVEYOR” shall mean a professional land surveyor licensed in the State of Florida.

1.2 CONSTRUCTION QUALITY CONTROL/QUALITY ASSURANCE

A. CQC shall be performed by the geomembrane INSTALLER. The INSTALLER’S responsibilities shall include, but are not limited to, the following:

1. Supervise all geomembrane installation activities.

2. Perform and document CQC testing as specified herein.

3. Certify geomembrane materials and installation as meeting requirements of the CONTRACT DOCUMENTS and SPECIFICATIONS.

B. Construction Quality Assurance (CQA) will be performed by a designated CQA CONSULTANT and QA TESTING LABORATORY retained by the OWNER.

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C. The CQA CONSULTANT or OWNER'S REPRESENTATIVE shall obtain samples and perform conformance testing of the geomembrane as indicated in this Section.

D. The CQA CONSULTANT, or his Construction Quality Assurance Representative (CQAR), shall observe and monitor the geomembrane installation activities and obtain and perform CQA testing at random frequencies and locations.

E. Based upon review of the CQC and CQA final reports, the CQA CONSULTANT will provide certification to the regulatory agencies that the geomembrane was installed in accordance with the SPECIFICATIONS.

F. The CONTRACTOR shall schedule WORK to provide sufficient time as required to complete CQC and CQA field testing and documentation prior to placing any overlying layers above the geomembrane, and shall keep the CQA CONSULTANT’S QA TESTING LABORATORY informed of the construction progress to provide sufficient time for laboratory testing.

G. The CQA CONSULTANT shall submit a final report, signed and sealed by a professional engineer licensed in the State of Florida certifying the test results.

1.3 SUBMITTALS

A. The CONTRACTOR shall submit in writing to the ENGINEER documentation on the following:

1. MANUFACTURER’S qualifications showing the following:

a. A qualified MANUFACTURER shall be a company, corporation, or firm regularly engaged in the development, manufacture, and a history of successful production of geomembrane. The geomembrane rolls shall be manufactured by a single MANUFACTURER. A company other than a MANUFACTURER may supply the geomembrane; however, the MANUFACTURER of the geomembrane shall be required to submit and meet the requirements of this Section.

b. Verification that the MANUFACTURER has successfully supplied geomembrane for a minimum of 6 projects in the United States, during the last 5 years, of similar size and scope, totaling a minimum of 5,000,000 SF of installed geomembrane. Projects shall be considered similar only if the MANUFACTURER had total manufacturing responsibility for geomembrane production and the installed geomembrane has successfully fulfilled its primary function for a minimum of 2 years. The MANUFACTURER shall submit written information as follows:

1) Name and location of project and date of installation.

2) Contact name and phone number for each project.

3) Geomembrane thickness and surface area of the geomembrane installed

c. The MANUFACTURER shall submit written information on the following:

1) Information on plant size (square feet of geomembrane produced daily), SOUTHEAST EXPANSION AREA 02776-3 3/23/2026 number of shifts, and capacity of each shift.

2) Daily production quantity shall be sufficient to meet the demands of the schedule for this WORK.

3) QC Program Manual of descriptive documentation for production. The manual shall define sampling procedures, test frequencies, and methods.

4) A statement from the MANUFACTURER indicating the QC measures specified for this WORK will be followed, at a minimum, and the manufactured geomembrane will meet or exceed the product SPECIFICATIONS for this

WORK.

2. FABRICATOR’S qualifications showing the following (if a FABRICATOR is used):

a. A Qualified FABRICATOR shall be a company, corporation, or firm regularly engaged in the seaming and fabrication of geomembrane products, under factory-controlled conditions, for the installation of geomembrane under field conditions. The FABRICATOR usually seams together combinations of smaller rolls of geomembrane into larger factory panels for deployment in the field. The geomembrane shall be fabricated by a single FABRICATOR. The FABRICATOR shall submit written information on the following:

1) Information on plant size (square feet of geomembrane fabricated daily), number of shifts, and capacity of each shift.

2) Daily production quantity shall be sufficient to meet the demands of the schedule for this WORK.

3) QC Program Manual of descriptive documentation for fabrication. The manual shall define sampling procedures, test frequencies, methods, and include FABRICATOR’S QC Certificates and Material Certification. The FABRICATOR shall, at a minimum, comply with the QC SPECIFICATIONS for this WORK.

4) A statement from the FABRICATOR indicating the fabrication QC measures specified for this WORK will be followed, and the fabricated geomembrane products will meet or exceed the product SPECIFICATIONS for this WORK.

b. The FABRICATOR shall have successfully fabricated geomembrane products for at least 6 projects, during the last 5 years, of similar size and function, totaling a minimum of 5,000,000 SF of installed geomembrane. Projects shall be considered similar only if the FABRICATOR had total fabrication responsibility for geomembrane production and the installed geomembrane has successfully fulfilled its primary function for a minimum of 2 years. The FABRICATOR shall submit written information as follows:

1) Name and location of project and date of installation.

2) Contact name and phone number for each project.

3) Geomembrane thickness and surface area of the geomembrane installed.

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3. INSTALLER’S qualifications showing the following:

a. A qualified INSTALLER shall be a company, corporation, or a single INSTALLER.

The INSTALLER shall submit written information on the following:

1) Installed a minimum of 5,000,000 SF of HDPE geomembrane during the last 5 years or otherwise demonstrate they are qualified to perform the WORK.

2) Worked in a similar capacity on at least 6 projects similar in complexity to the project described in the CONTRACT DOCUMENTS.

3) A minimum of 1 Field Installation Supervisor(s) for WORK on the PROJECT.

a) The Field Installation Supervisor qualifications to be assigned to this WORK shall have directly supervised the installation of a minimum of 2,000,000 SF of geomembrane. No geomembrane shall be installed without the presence of the Field Installation Supervisor.

4) Ability to provide a minimum of 1 Master Seamer(s) for WORK on the

PROJECT.

a) All personnel performing seaming operations shall be qualified by experience or by successfully passing seaming tests. At least 1 seamer(s) shall have experience seaming a minimum of 1,000,000 linear feet of geomembrane seams using the same type of seaming apparatus to be used for this WORK. No seaming shall be carried out without the presence of the Master Seamer within the immediate vicinity.

5) Installation Quality Control testing personnel in the field with a minimum of 1,000,000 SF of geomembrane Quality Control testing. Only the actual square footage that the personnel have directly performed Quality Control testing on shall be counted as fulfillment of the minimum square footage.

B. The CONTRACTOR shall submit in writing to the ENGINEER for approval 21 calendar days prior to delivery of the geomembrane to the PROJECT site, documentation on the following:

1. Geomembrane Resin - MANUFACTURER QC Certificates demonstrating compliance with Section 2. Any geomembrane manufactured from resin not meeting the SPECIFICATIONS shall be rejected and not be delivered to the PROJECT site.

2. Material Properties Sheet - Geomembrane MANUFACTURER material properties sheet, including at a minimum all properties specified in GRI GM13, including test methods used and QC Certificates.

3. Geomembrane accessories.

4. Extrudate rod resin information.

5. MANUFACTURER QC Certificates - The MANUFACTURER QC Certificates, written on the MANUFACTURER’S company letterhead, for each roll of geomembrane, including

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roll identification numbers, and the results (listed individually) of QA/QC testing performed by the MANUFACTURER.

6. MQC Test Reports - See Part 2 of this Section for tests and test frequencies to be provided within 72 hours of completion of the test and prior to material shipment.

7. Geomembrane Shipment - Prior to shipment of the geomembrane from the MANUFACTURER to the PROJECT site, notice shall be provided so that sufficient time is available to perform conformance sampling and receive laboratory test results.

8. Recommended storage, loading, unloading, and handling equipment (include model number or load capacity).

9. Installation Plan - The Plan will include documentation on the following:

a. Installation layout drawings drawn to scale.

1) Proposed geomembrane panel layout including field seams and details, panel location, orientation, identification, sequence, and installed square footage of geomembrane.

a) Approved drawings will be for concept only, and actual panel placement will be determined by site conditions.

b. INSTALLER’S Geosynthetic Field Installation QA/QC Plan.

1) The INSTALLER shall, at a minimum, comply with the SPECIFICATIONS for this WORK. The QA/QC Field Installation Plan shall provide for recording all inspection and testing of all WORK to ensure conformance to the applicable CONTRACT DOCUMENTS and SPECIFICATIONS with respect to materials, workmanship, construction, functional performance, and identification. If differences exist between the INSTALLER’S QC procedures and the QC procedures specified by the ENGINEER or CQA CONSULTANT the procedures specified for the WORK shall govern installation. The QA/QC Field Installation Plan shall be subject to approval by the ENGINEER and include:

a) Proposed equipment to be driven over the geomembrane.

b) Storage and handling (equipment).

c) Panel identification.

d) Panel inspection.

e) Panel layout drawings/shop drawings.

f) Seam identification.

g) Seaming process and equipment.

h) Seaming inspection.

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i) Non-destructive test methods (seams, repairs, geomembrane boots).

j) Destructive tests.

k) Laboratory tests.

l) Methods for testing and calibration of field testing equipment.

m) Corrective actions (i.e., addition of geomembrane, reduction of geomembrane, topography changes).

n) Procedures for the development of Record Drawings.

o) Weather contingencies.

p) Record keeping.

q) Description of welding equipment, techniques, and materials.

r) Complete set of forms used to record installation QA/QC data.

s) If the INSTALLER proposes to conduct seaming operations outside of the approved conditions as specified herein (i.e., outside the weather parameters or night operations), written information and supporting data verifying seam quality can be maintained shall be submitted to the ENGINEER for review and approval. Alternate seaming operations will not be allowed without prior approval from the ENGINEER.

t) Resumes of key geomembrane installation personnel (Field Installation Supervisor, Master Seamer, and QC personnel shall be clearly identified).

u) Proposed INSTALLER’s warranty (workmanship).

v) A statement from the INSTALLER stating the installation QC measures specified for this WORK will be followed, and the installed geomembrane products will meet or exceed the SPECIFICATIONS for this WORK.

10. Direct Shear Test (Interface Shear Resistance) - Direct Shear Test results demonstrating compliance with Section 2.

C. The CONTRACTOR shall submit in writing to the ENGINEER for approval 21 calendar days prior to geomembrane installation, documentation on the following:

1. Survey Drawings - The CONTRACTOR shall supply the ENGINEER signed and sealed survey drawings by a SURVEYOR that clearly indicate the grades and elevations meet the CONTRACT DOCUMENTS and SPECIFICATIONS.

2. Certificate of Subbase Acceptance - Certifying the Subbase was constructed in accordance with the approved CONTRACT DOCUMENTS and SPECIFICATIONS. The acceptance certificate shall be co-signed by the CONTRACTOR along with the INSTALLER, and reviewed and approved by the ENGINEER prior to the installation of the geomembrane.

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D. The CONTRACTOR/INSTALLER will submit the following to the ENGINEER upon completion of geomembrane installation:

1. Certificate stating the geomembrane has been installed in accordance with the CONTRACT DOCUMENTS and SPECIFICATIONS.

2. Material and installation warranties.

3. Daily Log - Including the daily record that summarizes panels deployed, seams completed, seam testing, seam repair, personnel on site, weather conditions, and equipment on site.

4. Panel Log - Provides the geomembrane roll number used and subgrade acceptance for each panel deployed.

5. Seam Testing Log - A complete record of all non-destructive and destructive testing performed as part of the INSTALLER’S QC program.

6. Seam/Repair Log - Provides a complete record of all repairs and vacuum box testing of repairs made to defective seams and panels.

7. Record Drawings - A panel layout drawing reflecting as-built conditions and related installation details (i.e., panel layout, penetrations, boots, connections, seam type) of the actual geomembrane lining system. The panel layout Record Drawings shall:

a. Be at the same scale as the CONTRACT DRAWINGS and use applicable drafting standards, including a border identifying the INSTALLER, OWNER, PROJECT name and drawing name.

b. Indicate the installed field panel and seam numbering, configuration, and dimensions, geomembrane penetrations, and berms. The CONTRACTOR/INSTALLER shall correlate the identification numbers for each roll of material to the installation field panel.

c. Include the installed area, in square feet, of installed geomembrane.

d. Include the locations of destructive samples and repairs with the correct corresponding sample number.

1.4 MATERIAL AND INSTALLATION WARRANTY

A. Material shall be warranted, on a pro-rata basis, against MANUFACTURER’S defects for a period of 5 years from the date of final acceptance.

B. Installation shall be warranted by the CONTRACTOR against defects in workmanship for a period of 3 years from the date of final acceptance.

C. Warranty conditions proposed by the MANUFACTURER / FABRICATOR / INSTALLER concerning limits of liability will be submitted by the CONTRACTOR and will be evaluated upon receipt, and must be acceptable to the OWNER prior to installation of the geomembrane.

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1.5 DEFINITIONS

A. Lot - A quantity of resin (usually the capacity of one railcar) used in the manufacture of geomembranes. The finished roll will be identified by a roll number traceable to the resin lot used.

B. CQA CONSULTANT - Party, independent from the MANUFACTURER and INSTALLER, that is responsible for observing and documenting activities related to QA during the lining system construction.

C. ENGINEER - The person, firm, or corporation named as such in the Agreement.

D. Geomembrane MANUFACTURER - The party responsible for manufacturing the geomembrane rolls.

E. Geosynthetic QA TESTING LABORATORY - Party, independent from the CONTRACTOR, MANUFACTURER, and INSTALLER responsible for conducting laboratory tests on samples of geosynthetics obtained during manufacturing, usually under the direction of the OWNER and CQA CONSULTANT.

F. INSTALLER - Party responsible for field handling, storing, deploying, seaming, and testing of the geomembrane seams.

G. Panel - Unit area of a geomembrane that will be seamed in the field, which is larger than

100 SF.

H. Patch - Unit area of a geomembrane that will be seamed in the field that is less than 100

SF.

I. Subbase - Soil layer surface that immediately underlies the bottom liner system GCL as shown on the CONTRACT DRAWINGS.

PART 2 - PRODUCTS

2.1 GENERAL

A. For general information purposes only, the geomembrane MANUFACTURER’S are the following:

Solmax GSE

Agru/America, Inc.

ENGINEER approved equal

B. The geomembrane for the PROJECT shall conform to the physical properties requirements, at a minimum, as shown in TABLE 02776-6 GEOMEMBRANE MATERIAL PROPERTIES or the most current GRI standard for this product. Values presented in TABLE 02776-6 GEOMEMBRANE MATERIAL PROPERTIES are based upon the standard GRI GM13 established by the Geosynthetics Research Institute (GRI) for HDPE.

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2.2 GEOMEMBRANE

A. Material shall be 60 mil Textured HDPE Geomembrane Liner and 80 mil Textured HDPE Geomembrane Liner (textured on both sides) as shown on the CONTRACT DRAWINGS and specified herein.

B. Geomembrane Rolls

1. Do not exceed a combined maximum total of 1% by weight of additives other than carbon black.

2. Geomembrane shall be free of holes, blisters, undispersed raw materials, nicks, and cuts on roll edges or any sign of contamination by foreign matter. If pinholes are located, identified, and indicated during manufacturing, these pinholes may be corrected during installation in accordance with the MANUFACTURER’S recommendations.

3. Geomembrane material is to be supplied in roll form. Each roll is to be identified with labels indicating the information required in this Section.

2.3 EXTRUDATE ROD OR BEAD

1. Extrudate material shall be made from the same type of resin as the geomembrane.

2. Additives shall be thoroughly dispersed.

3. Materials shall be free of contamination by moisture or foreign matter.

TABLE 02776-1 EXTRUDATE TESTING

TEST METHOD/PROPERTY

FREQUENCY

(MINIMUM)

ASTM D1505 or ASTM D792 Density 1/rod ASTM D4218/D1603 Carbon Black Content 1/rod

2.4 MANUFACTURING QUALITY CONTROL TESTING

A. Testing during manufacturing shall be accomplished by the MANUFACTURER’S laboratory.

B. The MANUFACTURER shall provide MANUFACTURER’S QC Certificate, written on the MANUFACTURER’S company letterhead, for the raw resin material used to produce each roll of geomembrane.

C. The MANUFACTURER shall provide a statement certifying no recycled polymer and no more than 10% rework of the same type of material was added to the resin (product run may be recycled).

D. The frequency of the testing of the resin batches shall be per the MANUFACTURER’S QC Plan and TABLE 02776-2 RESIN REQUIREMENTS, at a minimum, of this Section. A resin

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lot is defined as 180,000 pounds or less of raw resin material.

E. The MANUFACTURER QA/QC test procedures and results shall be performed at a frequency of material per lot that conforms to TABLE 02776-3 HDPE LINER MANUFACTURING QUALITY CONTROL TESTING, at a minimum, of this Section.

TABLE 02776-2 RESIN REQUIREMENTS

TEST METHOD/PROPERTY 60 mil VALUE 80 mil VALUE

FREQUENCY

(MINIMUM)

ASTM D1505 Polymer Density 0.932 to 0.950 (g/cm3) 0.932 to 0.950 (g/cm3) not less than 1 test per resin lot

ASTM D1238 Polymer Melt Flow Index ≤ 1.0 g/10 min. ≤ 1.0 g/10 min. not less than 1 test per resin lot

ASTM D3895 Oxidation Induction Time > 100 min. > 100 min. not less than 1 test per resin lot

TABLE 02776-3 HDPE LINER MANUFACTURING QUALITY CONTROL TESTING

TEST METHOD/PROPERTY

60 mil

FREQUENCY

(MINIMUM)

80 mil

FREQUENCY

(MINIMUM)

ASTM D7466 Asperity Height 1 per 50,000 SF 1 per 50,000 SF ASTM D1505/D792 Polymer Density 1 per 50,000 SF 1 per 50,000 SF ASTM D5994 Thickness 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Tensile Property (each direction) 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Yield Stress 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Yield Elongation 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Break Stress 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Break Elongation 1 per 50,000 SF 1 per 50,000 SF ASTM D4218/D1603 Carbon Black Content 1 per 50,000 SF 1 per 50,000 SF ASTM D5596 Carbon Black Dispersion 1 1 per 100,000 SF 1 per 100,000 SF ASTM D5321 Interface Friction Angle Geomembrane/GCL

1 representative sample Not Applicable

ASTM D5321 Interface Friction Angle Geocomposite/Geomembrane

1 representative sample Not Applicable

Note:

1. Carbon black dispersion for 10 different views: All 10 views in categories 1 and 2.

2.5 CQA CONFORMANCE TESTING

A. In-Plant Conformance Sample Testing Services - The OWNER'S REPRESENTATIVE and CQA CONSULTANT have qualified personnel to collect conformance samples directly at the following facilities:

AGRU America - Kingwood, Texas

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Solmax GSE - Houston, Texas

Poly-Flex, Inc. - Grand Prairie, Texas

1. Conformance sample(s) of the 60 mil Textured HDPE Geomembrane Liner and 80 mil Textured HDPE Geomembrane Liners will be collected by the OWNER'S REPRESENTATIVE or CQA CONSULTANT prior to shipment to the PROJECT site.

2. Conformance sample(s) of the geomembranes will be tested by the CQA CONSULTANT prior to shipment to the PROJECT site.

3. The CONTRACTOR shall coordinate with the MANUFACTURER, CQA CONSULTANT, and OWNER to schedule the date of delivery of the geomembrane to the PROJECT site.

4. The CONTRACTOR shall inform, in writing, the ENGINEER and CQA CONSULTANT 15 calendar days prior to the actual date of shipment from the MANUFACTURER.

Geomembrane shall not be shipped prior to testing without the ENGINEER'S and CQA CONSULTANT’S approval.

5. Geomembrane products shipped to the PROJECT site without approved conformance test results shall be sampled and tested upon delivery to the PROJECT site by the CQA CONSULTANT. All costs associated with collecting and shipping samples from the PROJECT site will be the CONTRACTOR'S responsibility. The CONTRACTOR shall allow a minimum of 7 calendar days for sampling and testing of the geomembrane upon delivery to the PROJECT site prior to installation.

6. Once sampled at the MANUFACTURER’S plant, geomembrane products shall not be added or removed from the shipment. Upon addition or removal of products, the following conditions shall prevail:

a. Geomembrane products added shall be sampled for conformance testing at the CONTRACTOR'S expense.

b. Individual geomembrane products removed from the shipment, which have been previously sampled or tested - Additional samples that have identical lot or batch numbers shall be sampled for conformance testing at the CONTRACTOR'S expense.

B. Conformance Sample Test Frequency - The primary and secondary geomembrane shall be randomly sampled and tested by the OWNER'S REPRESENTATIVE or CQA CONSULTANT. The initial conformance testing shall be at the OWNER'S expense.

1. The initial conformance tests shall include one sample per lot, but at a rate of not less than that indicated in TABLE 02776-4 REQUIRED CONFORMANCE TESTING of installed material from consecutively numbered rolls, whichever is smaller. A lot is defined as a group of consecutively numbered rolls manufactured from the same resin batch or production line.

2. Samples shall be taken across the entire width of the rolls and shall not include the first 2 feet if stored outside or damaged. The test results of the geomembrane samples shall meet or exceed the CONTRACT DOCUMENTS and SPECIFICATIONS.

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3. Samples that do not satisfy the CONTRACT DOCUMENTS and SPECIFICATIONS shall be cause to reject applicable rolls. If a geomembrane sample fails to meet CONTRACT DOCUMENTS and SPECIFICATIONS, subsequent tests shall be performed at random on additional geomembrane samples produced from the same resin batch to determine whether all rolls produced from the same batch shall be considered as unsatisfactory and therefore rejected. The additional testing, borne by the CONTRACTOR, may be performed to more closely identify the rolls which do not comply with the SPECIFICATIONS. Rejected rolls will not be installed and shall be removed from the PROJECT site as directed by the ENGINEER or CQA CONSULTANT at no additional cost to the OWNER.

TABLE 02776-4 REQUIRED CONFORMANCE TESTING

TEST METHOD/PROPERTY

60 mil FREQUENCY

(MINIMUM)

80 mil FREQUENCY

(MINIMUM)

ASTM D5994 Thickness 1 per roll 1 per roll ASTM D4218/D1603 Carbon Black Content 1 per 50,000 SF 1 per 50,000 SF ASTM D5596 Carbon Black Dispersion 1 per 100,000 SF 1 per 100,000 SF ASTM D1505 or ASTM D792 Density 1 per 50,000 SF 1 per 50,000 SF ASTM D6693 Type IV Tensile Properties 1 per 50,000 SF 1 per 50,000 SF ASTM D5321 Interface Friction Angle 3

1 per 100,000 SF One representative sample

ASTM D5321 Interface Friction Angle 4 1 per 100,000 SF

One representative sample

ASTM D5321 Interface Friction Angle 5 1 per 100,000 SF

One representative sample

Notes:

1. Each direction.

2. Required test results shall be in conformance with TABLE 02776-6 GEOMEMBRANE

MATERIAL PROPERTIES.

3. Direct Shear Test (Interface Shear Resistance) Geocomposite (Primary)/Geomembrane (Primary) - The CQA CONSULTANT will perform testing at the rate indicated in TABLE 02776-4 REQUIRED CONFORMANCE TESTING on samples of the Geocomposite (Primary)/Geomembrane (Primary). The following testing parameters will be followed, with the results submitted to the ENGINEER or CQA CONSULTANT:

a. Testing conducted under fully saturated (water) conditions. Geosynthetics shall be oriented such that the shear force is parallel to the downslope orientation in the field.

The testing laboratory shall confirm these criteria with the ENGINEER or CQA CONSULTANT prior to performing the tests.

b. Three Normal Loads = 1,000 psf, 6,000 psf, and 9,500 psf.

c. Test Configuration = primary geocomposite clamped to the top box primary geomembrane clamped to the bottom box

d. Strain Rate = 1 mm/min (0.04 in/min).

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e. Continue testing to ensure a full 3 inches of displacement.

f. Plot and report (Peak and Residual values) for the best fit line through each of the three test results.

g. A minimum PEAK value of 0 psf adhesion and 20.5 degrees for the interface friction angle is required for this PROJECT (based upon the best fit line).

h. Adhesion may be considered by the ENGINEER to determine equivalent stability for this

PROJECT.

4. Direct Shear Test (Interface Shear Resistance) Geocomposite (Secondary)/Geomembrane (Secondary) - The CQA CONSULTANT will perform testing at the rate indicated in TABLE 02776-4 REQUIRED CONFORMANCE TESTING on samples of the Geocomposite (Secondary)/Geomembrane (Secondary). The following testing parameters will be followed, with the results submitted to the ENGINEER or CQA CONSULTANT:

a. Testing conducted under fully saturated (water) conditions. Geosynthetics shall be oriented such that the shear force is parallel to the downslope orientation in the field.

The testing laboratory shall confirm these criteria with the ENGINEER or CQA CONSULTANT prior to performing the tests.

b. Three Normal Loads = 1,000 psf, 6,000 psf, and 9,500 psf.

c. Test Configuration = secondary geocomposite clamped to the top box secondary geomembrane clamped to the bottom box

d. Strain Rate = 1 mm/min (0.04 in/min).

e. Continue testing to ensure a full 3 inches of displacement.

f. Plot and report (Peak and Residual values) for the best fit line through each of the three test results.

g. A minimum PEAK value of 0 psf adhesion and 20.5 degrees for the interface friction angle is required for this PROJECT (based upon the best fit line).

h. Adhesion may be considered by the ENGINEER to determine equivalent stability for this

PROJECT.

5. Direct Shear Test (Interface Shear Resistance) Geomembrane (Secondary)/GCL - The CQA CONSULTANT will perform testing at the rate indicated in TABLE 02776-4 REQUIRED CONFORMANCE TESTING on samples of the Geomembrane (Secondary)/GCL. The following testing parameters will be followed, with the results submitted to the ENGINEER or CQA

CONSULTANT:

a. Testing to be conducted under fully saturated (water) conditions. Geosynthetics shall be oriented such that the shear force is parallel to the downslope orientation in the field.

The testing laboratory shall confirm these criteria with the CQA prior to performing the tests.

b. Three Normal Loads = 1,000 psf, 6,000 psf, and 9,500 psf.

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c. Test Configuration = secondary geomembrane clamped to the top box = GCL clamped to the bottom box

d. Strain Rate = 1 mm/min (0.04 in/min).

e. Continue testing to ensure a full 3 inches of displacement.

f. Plot and report (Peak and Residual values) for the best fit line through each of the three test results.

g. A minimum PEAK value of 0 psf adhesion and 20.5 degrees for the interface friction angle is required for this PROJECT (based upon the best fit line).

h. Adhesion may be considered by the ENGINEER to determine equivalent stability for this

PROJECT.

6. The CQA CONSULTANT will conduct testing on the actual extrudate welding rod used in the field for seaming and repairing the geomembrane panels to verify that the material is compatible with the geomembrane according to TABLE 02776-1 EXTRUDATE TESTING.

PART 3 - EXECUTION

3.1 MATERIAL PROTECTION

A. It is the CONTRACTOR'S responsibility to provide all labor and materials for the protection of the product during the period of time prior to the installation of overlying materials.

The CONTRACTOR'S protection method is subject to the approval of the ENGINEER.

3.2 MATERIAL LABELING, DELIVERY, STORAGE, AND HANDLING

A. Labeling

1. Each roll of material shall have a MANUFACTURER’S identification label. Each roll shall be labeled to provide product identification adequate for inventory and QC purposes. At a minimum, each roll label shall identify the following characteristics per ASTM D4873 Standard Guide for Identification, Storage, and Handling of Geosynthetic Rolls and Samples:

a. Product identification information (MANUFACTURER name and address, brand name, product code).

b. Product lot number and individual roll number.

c. Date of fabrication.

d. Roll length and width

B. Delivery

1. The MANUFACTURER typically assumes responsibility for initial loading and shipping of the geomembrane. Unloading, on-site handling, and storage shall be the

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responsibility of the CONTRACTOR.

2. Rolls of geomembrane will be prepared to ship by appropriate means to prevent damage to the material and to facilitate off-loading according to the MANUFACTURER’S recommendations.

3. A visual inspection of each roll should be made by the CONTRACTOR as it is unloaded to determine if any packaging or material has been damaged during transit. Rolls with damaged packaging should be repaired prior to being placed in storage.

4. Rolls of geomembrane exhibiting damage shall be marked and set aside for closer examination during deployment. Damaged materials will be identified and repaired or rejected at the discretion of the ENGINEER. Materials to be repaired as specified herein.

5. The CONTRACTOR shall contact the MANUFACTURER prior to shipment to ascertain the appropriateness of the proposed unloading methods and equipment to be utilized.

6. The CONTRACTOR assumes all liability with regard to shipping, transport, and unloading of the geomembrane required to complete the WORK. The OWNER shall not be responsible for damaged, lost, or mis-stocked shipments, or mishandled or damaged materials.

C. Storage

1. The MANUFACTURER shall identify, in writing, the proper equipment and methods for unloading materials and storage procedures for the products delivered to the PROJECT site.

2. Storage of the geomembrane rolls shall be the responsibility of the CONTRACTOR.

The materials shall be unloaded by the CONTRACTOR in areas designated by the OWNER. The CONTRACTOR shall provide the proper equipment and labor necessary to unload the material upon delivery to the PROJECT. The materials shall not be stored or unloaded in areas that will impair the operations of the landfill facility or be deleterious to the materials. At a minimum, the storage location for geomembrane material shall provide protection from punctures, abrasions, excessive dirt and moisture, and shall have the following characteristics:

a. Rolls shall be fully supported on pallets or other devices to be prevented from contacting the ground.

b. Water shall be prevented from accumulating beneath the rolls.

c. Rolls shall not be stacked upon one another to the extent that deformation of the core or flattening of the rolls occurs.

d. Outdoor storage should not be allowed to exceed 6 months.

e. Protected from theft and vandalism.

f. Sufficiently close to the WORK area to minimize handling.

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D. Handling

1. Each roll of geomembrane delivered to the site shall be inspected by the CONTRACTOR, at a minimum, as follows:

a. The CONTRACTOR shall provide transportation, labor, and handling for delivery of the geomembrane to the PROJECT site. Special transportation or handling requirements for the geomembrane shall be provided by the CONTRACTOR.

b. The equipment for transportation, handling, loading, and unloading the geomembrane shall be of sufficient size and capacity to safely and efficiently handle geomembrane materials without damage or personnel injury occurring.

The type, size, and capacity shall be according to the MANUFACTURER and INSTALLER requirements.

c. The CONTRACTOR shall provide all equipment, labor, unloading, on-site handling, and installation of the geomembrane.

d. Upon delivery to the PROJECT site, the geomembrane material shall be inspected by the CONTRACTOR to confirm that proper labeling, transportation, handling, and storage procedures are followed. Damage to the geomembrane rolls caused by the CONTRACTOR during unloading, on-site handling, and installation will be made at no additional cost to the OWNER. Rejected materials will be identified and removed from the PROJECT site as directed by the OWNER and CQA CONSULTANT at no additional cost to the OWNER.

3.3 GEOMEMBRANE SUBGRADE

A. Surface to be lined shall be smooth and tested in accordance with Section 02220 Excavation, Backfill, Fill, and Grading for Subgrade Material. The area shall be free of all rocks (greater than 1/4-inch in any dimension), sticks (greater than 1/4-inch in diameter), roots, grass, refuse, sharp objects, or debris of any kind. The surface shall provide a firm, unyielding foundation for the geomembrane with no sudden, sharp, or abrupt changes or breaks in grade. No standing water or excessive moisture shall be allowed.

B. All areas that have been subject to erosion shall be repaired as required in Section 02220 Excavation, Backfill, Fill, and Grading. The repaired surface for geomembrane placement shall be even with no abrupt changes or breaks in grade. No standing water or excessive moisture shall be allowed.

3.4 EQUIPMENT

A. Welding equipment and accessories shall meet the following requirements:

1. Gauges showing temperatures in the apparatus (extrusion welder) or wedge (wedge welder) shall be present.

2. An adequate number of welding apparatus shall be available to avoid delaying

WORK.

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B. The power source must be capable of providing a constant voltage under combined load.

3.5 DEPLOYMENT

A. The product shall be installed in accordance with the MANUFACTURER’S recommendations and the CONTRACT DOCUMENTS and SPECIFICATIONS. In case of a conflict between these documents, the more stringent requirements shall apply. Any deviations from these procedures must be reviewed and accepted by the ENGINEER prior to construction.

B. All activities by personnel and equipment in the vicinity of the geomembrane during and after geomembrane placement shall be monitored by the CONTRACTOR to ensure the geomembrane and the geomembrane foundation are not damaged.

C. Assign each panel a simple and logical identifying code. The coding system shall be subject to approval by the ENGINEER and CQA CONSULTANT and shall be determined at the PROJECT site.

D. Visually inspect the geomembrane during deployment for imperfections and mark faulty or suspect areas. Field panels shall not be placed if any of the following conditions exist:

inadequate geomembrane foundation, precipitation, presence of excessive moisture (i.e., fog, dew), ponded water, or presence of excessive winds.

E. Prior to welding, deploy panels in a “shingle” manner, wherein the upgradient panel overlays the downgradient panel.

F. Deployment of geomembrane panels shall be performed in a manner that will comply with the following guidelines:

1. Unroll the geomembrane using methods that will not damage the geomembrane and will protect the underlying surface from damage (spreader bar, protected equipment bucket, etc.).

2. Place ballast (sandbags) on the geomembrane, which will not damage the geomembrane, to prevent wind uplift. The CONTRACTOR shall have sufficient sandbags or other appropriate anchoring materials on site to secure the geomembrane. The CONTRACTOR shall replace or repair all geomembrane damaged (as determined by the ENGINEER) by wind or insufficient anchoring at no additional cost to the OWNER.

3. Personnel walking on the product shall not engage in activities or wear footwear that could damage the material. Smoking shall not be permitted on or near the geosynthetics.

4. Do not allow heavy vehicular traffic directly on the geomembrane. Rubber-tired ATVs and trucks are acceptable if wheel contact is less than 6 psi.

5. Protect the geomembrane in areas of heavy traffic by placing protective cover over the geomembrane.

G. Sufficient material (slack) shall be provided to allow for thermal expansion and contraction of the material. The geomembrane shall be installed so as to conform to the

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contours and grade breaks. The geomembrane shall remain in contact with the underlying geosynthetics. Sandbags or excess material, placed during deployment, shall be used to prevent bridging due to temperature or installation procedures. Allowances for additional material due to temperature and installation procedures shall be included in the bid and at no additional cost to the OWNER.

H. “Fishmouths” or wrinkles at the seam overlaps shall be cut along the ridge of the wrinkle in order to achieve a flat overlap. The cut fishmouths or wrinkles shall be seamed, and any portion where the overlap is inadequate shall then be patched with an oval or round patch of the same geomembrane extending a minimum of 6 inches beyond the cut in all directions.

I. If the INSTALLER proposes to conduct seaming operations outside of the approved conditions as specified herein (i.e., outside the weather parameters or night operations), written information and supporting data verifying seam quality can be maintained shall be submitted to the ENGINEER for review and approval 72 hours in advance. Alternate seaming operations will not be allowed without prior approval from the ENGINEER. If during the course of the WORK, the ENGINEER, CQA CONSULTANT, or OWNER decides the WORK is inadequate, the CONTRACTOR shall adjust operations as required, or WORK shall cease. CONTRACT DOCUMENTS and SPECIFICATIONS for placing and seaming the geomembrane shall apply to all WORK conditions.

3.6 FIELD SEAMING

A. Seams shall meet the following requirements:

1. To the maximum extent possible, orient seams parallel to the line of slope, i.e., down and not across slope.

2. Minimize the number of field seams in corners, odd-shaped geometric locations, and outside corners.

3. Slope seams (panels) shall extend a minimum of 5 feet beyond the grade break into the flat area.

4. Use a sequential seam numbering system compatible with the panel numbering system that is agreeable to the CQA CONSULTANT and INSTALLER.

5. Align seam overlaps consistent with the requirements of the welding equipment being used. The panels of geomembrane have a finished overlap of 4 inches for extrusion welding and 6 inches for fusion welding, but in any event, sufficient overlap shall be provided to allow peel tests to be performed on the seam.

B. During welding operations, provide at least 1 Master Seamer who shall provide direct supervision over other welders as necessary.

C. Extrusion Welding

1. Hot-air tack adjacent pieces together using procedures that do not damage the geomembrane.

2. Clean geomembrane surfaces by disc grinder or equivalent.

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3. Purge the welding apparatus of heat-degraded extrudate before welding.

D. Hot Wedge Welding

1. Welding apparatus shall be a self-propelled device equipped with an electronic controller that displays applicable temperatures.

2. Clean the seam area of dust, mud, moisture, and debris immediately ahead of the hot wedge welder.

3. Protect against moisture build-up between sheets.

E. Trial Welds

1. Perform trial welds on geomembrane samples to verify welding equipment is operating properly.

2. Make trial welds under the same surface and environmental conditions as the production welds, i.e., in contact with Subgrade and similar ambient temperature.

3. Minimum of 2 trial welds per day, per welding apparatus, 1 made prior to the start of work and 1 completed at mid-shift (typically after lunch break). Additionally, perform trial welds at any time the welding equipment is shut down and restarted.

4. Cut 4, one-inch wide by 6 inch long test strips from the trial weld.

5. Quantitatively test specimens for peel adhesion and then for shear strength.

6. Trial weld specimens shall pass when the minimum results, as indicated in TABLE 02776-5 MINIMUM PEEL AND SHEAR SEAM STRENGTH VALUES, are achieved in both peel and shear tests.

a. The break, when peel testing, occurs in the liner material itself, not through peel separation.

b. The break is ductile.

7. Repeat the trial weld, in its entirety, when any of the trial weld samples fail in either peel or shear.

8. No welding equipment or welder shall be allowed to perform production welds until the equipment and welders have successfully completed a trial weld.

F. Seaming shall not proceed when ambient air temperature or adverse weather conditions jeopardize the integrity of the liner installation. Immediately prior to seaming procedures, the seam area shall be completely free of moisture, dirt, or foreign material of any kind.

The INSTALLER shall demonstrate that acceptable seaming can be performed by completing acceptable trial welds.

G. Defects and Repairs

1. Examine all seams and non-seam areas of the geomembrane for defects, holes, SOUTHEAST EXPANSION AREA 02776-20 3/23/2026 blisters, undispersed raw materials, and any sign of contamination by foreign matter.

2. Repair and non-destructively test each suspect location in both seam and non-seam areas. Do not cover the geomembrane at locations that have been repaired until test results with passing values are available.

H. Cold-weather installations should follow the guidelines contained in GRI GM9.

3.7 FIELD QUALITY ASSURANCE

A. The MANUFACTURER and INSTALLER shall participate in and conform to all terms and requirements of the OWNER'S CQA Plan. The CQA CONSULTANT / CONTRACTOR shall be responsible for assuring this participation.

B. Welding equipment shall be calibrated prior to each day’s welding in accordance with the Installation Plan. The INSTALLER shall record all calibration data for inclusion in the final report. Additional test welds shall be performed for each welding machine every 4 hours, if welder is turned off, prior to starting work, after lunch, or as directed by the CQA

CONSULTANT.

3.8 NON-DESTRUCTIVE TESTING

A. Non-destructive testing shall be carried out as the seam progresses. All seams shall be non-destructively tested in the presence of the CQA CONSULTANT. Insufficient seams shall be labeled, recorded, repaired, and re-tested.

1. Vacuum Box Testing - Shall be performed in accordance with ASTM D5641 Standard Practice for Geomembrane Seam Evaluation by Vacuum Chamber.

a. Shall be required for all extrusion welds, except for those welds inaccessible to the vacuum box, such as geomembrane boots. Air pressure gauges shall read 0 psi when the testing apparatus is not turned on. Pressure gauges not reading 0 psi shall be replaced. The vacuum box apparatus shall be capable of sustaining a vacuum pressure 5 psi (gauge) for 10 seconds while placed on a seam. The following procedures shall be followed:

1) Energize the vacuum pump and reduce the tank pressure to approximately 10 inches of mercury, i.e., 5 psi (gauge). All gauges shall read 0 psi when the vacuum pump is not turned on. Gauges not reading 0 psi shall be replaced.

2) Wet a strip of geomembrane approximately 4 inches by 24 inches with a soapy solution.

3) Place the box over the wetted soapy area.

4) Close the bleed valve and open the vacuum valve.

5) Ensure that a leak-tight seal is created.

6) For a period of not less than 10 seconds, examine the geomembrane through the viewing window for the presence of soap bubbles, which would indicate

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defects in the geomembrane and/or welding.

7) If no bubble appears after 10 seconds, close the vacuum valve and open the bleed valve, move the box over the next adjoining area with a minimum 3 inches overlap, and repeat the process.

8) All areas where soap bubbles appear shall be marked and repaired in accordance with this Section.

2. Air Pressure Testing - Shall be performed in accordance with ASTM D5820 Standard Practice for Pressurized Air Channel Evaluation of Dual Seamed Geomembranes.

a. Testing apparatus shall be capable of generating a minimum pressure of 25 psi.

Air pressure gauges shall read 0 psi when the testing apparatus is not turned on.

Pressure gauges not reading 0 psi shall be replaced. The air channel shall be pressurized from 25 to 30 psi and allowed to stabilize. Once stabilized, the channel pressure shall be sustained for a minimum of 5 minutes. If the loss of pressure is more than 2 psi, or the pressure does not stabilize, the seam shall be rejected, the faulty area located and repaired, and the seam re-tested. The following procedures shall be followed:

1) Seal both ends of the seam to be tested.

2) Insert the needle or other approved pressure feed device into the tunnel created by the fusion weld.

3) Insert a protective cushion between the air pump and the geomembrane.

4) Energize the air pump to a pressure between 25 and 30 psi, close valve, allow channel pressure to stabilize, and sustain channel pressure for a minimum of 5 minutes.

5) If the loss of pressure is more than 2 psi If it does not stabilize, locate the faulty area and repair.

6) After a seam has passed a pressure test, release pressure at the end of the seam that is opposite the air pump and pressure gauge assembly to ensure that the seam is continuous and has been completely tested. The seal shall be repaired in accordance with this Section.

B. The CQA CONSULTANT shall include all results from the destructive and non-destructive seam tests in the final report.

3.9 DESTRUCTIVE TESTING

A. Performed by the CQA CONSULTANT with assistance from the INSTALLER.

B. Location and Frequency of Testing

1. The installed geomembrane shall be tested at a rate of one test per 500 linear feet of the welded seam at locations selected by the CQA CONSULTANT.

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2. Test locations will be determined after seaming.

C. Sampling procedures are performed as follows:

1. INSTALLER shall cut samples at locations designated by the CQA CONSULTANT as the seaming progresses in order to obtain field laboratory test results before the geomembrane is covered.

2. The CQA CONSULTANT will number each sample, and the location will be noted on the installation as-built.

3. The CONTRACTOR shall remove the sample with the seam centered lengthwise, approximately 12 inches wide across the seam by 42 inches long, and test a portion of the geomembrane seam in accordance with the CQA Plan. The location shall be recorded, repaired, and tested. The repair of the destructive seam samples shall be at no additional cost to the OWNER. The CQA CONSULTANT shall distribute the samples as follows:

a. A 12 inch by 14 inch portion to the CQA CONSULTANT for Third Party Laboratory Quality Assurance testing.

b. A 12 inch by 14 inch portion shall be retained by the INSTALLER for field testing.

c. A 12 inch by 14 inch portion to the OWNER for archive storage.

4. Testing performed on each sample shall include geomembrane peel adhesion and seam strength. Seam peel strength and shear strength shall meet the requirements specified in TABLE 02776-5 MINIMUM PEEL AND SHEAR SEAM STRENGTH VALUES.

TABLE 02776-5 MINIMUM PEEL AND SHEAR SEAM STRENGTH…